• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Adaptive control system for a numerical control machine tool like a lathe with a control program which contains the information about the outline of raw workpiece prior to blocks commanding the desired outline of the manufactured workpiece. The length of movements of the bit of said machine towards the direction of the center of said workpiece at the beginning of the cutting is controlled in a manner such that the cutting depth of said bit is shorter than the length of the cutting edge of said bit, and the load of said machine in the cutting operation is controlled so as to be equal to the upper limit of the allowable load. The system of the present invention provides prevention of damage to the bit, a shorter manufacturing time and improved operation efficiency of said machine.
    公开号:SU954000A3
    申请号:SU711731377
    申请日:1971-12-30
    公开日:1982-08-23
    发明作者:Кобояси Кенго；Хаттори Сейити；Тамура Масахару
    申请人:Фудзицу Лимитед (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to automation, in particular to control devices of metal cutting machines, preventing breakage of the cutter and reducing downtime of the machine. 5
    A device for controlling a machine is known, in which, when the maximum allowable torque is exceeded on the main spindle of the machine, the cutter is retracted from the workpiece, thereby reducing torque. In such a device, the optimum load value is maintained, which is equal to the upper permissible value, which allows the machine to be operated with a maximum efficiency of u.
    However, when the tool moves during processing of the workpiece along the contour specified by the program, the non-sharpened part 20 of the tool can come into contact with the workpiece and strike on it. This leads to breakage of the cutter, since the non-sharpened part of the cutter is not as strong as its cutting edge.
    Closest to the technical essence of the invention is a device for program control, containing a • unit for setting and distributing information, connected by outputs through interconnected elements of AND, OR, and delay, and summing and reversing counters to control units of coordinate drives [[2].
    A disadvantage of the known device is the low accuracy.
    The chain of invention is to improve the accuracy of the 'device.
    This goal is achieved in that a digital device for two-axis control of a metal cutting machine, containing a reference frequency generator, the output of which is connected to the first input of the first and second elements AND, a pulse distribution unit connected to the first output with a subtracting input of the first reversible counter through the third element And the second the output is with the summing input of the first reversibly. ”counter through sequentially included the fourth element AND, the fifth element AND and the first element OR, the third output - with a subtracting input of the second reversing counter through the sixth element And, and the fourth output - with a summing input of the second reversing counter through the sequentially connected seventh element And and the second element OR, delay element, two summing counters, the eighth element And, four ephemera This OR and drive control unit contains a trigger, a comparison unit, two NOT elements, four OR elements, two reversible counters, a detector, two totalizing counters, thirteen 15 AND elements and a pulse spindle load limit sensor spruce connected by an output to the second input of the second element OR and to the first input of the third element
    OR connected by an output to the first 20 input of the Ninth element AND and through the fourth element OR to the first input of the drive control unit, the zero output of the second reverse counter is connected to the second input of the fourth element OR through the tenth element AND connected by the second input to the third output pulse distribution unit and the first input of the eleventh aND gate whose output is connected to input 30 mu second- third OR gate and the second input - to the first output device to the second input of the second aND gate, to the input of the first e-mail, NOT and through the delay element to the information output of the second reversible counter and to the second input of the sixth element AND, the second input of the ninth element And is connected to the first input of the twelfth element And and through a trigger with zero output of the first reversible counter and with the second input of the first element And , connecting the other by the third input to the information output of the third reversible counter, the summing input of which is connected to the output of the ninth element And, the subtracting input - with the output of the first element And and with the first input of the fifth element SLT, and zero out - with the first inputs of the thirteenth and fourteenth element and a second input of the third element! And it is connected to the output of the first element NOT G, and the output is to the second input of the twelfth element AND, connected by the output to the second input of the drive control unit, the third input of which is connected through the sixth element OR to the output of the eighth element AND, connected by the first input to the output of the fourth element And, the second input of the sixth OR element is connected to the second input of the first OR element and to the output of the second AND element connected by the third input to the information output of the first reversible counter, the output of the fifteenth AND element is connected the fourth input of the drive control unit, the first input to the output of the second element NOT, and the second input to the output of the fifth OR element and to the first input of the sixteenth AND element, connected by the output to the counting input of the first totalizing counter, the control input of which is connected to the zero output of the first reversible counter, and the outputs to the inputs of the detector, connected by the output to the second inputs of the seventh and fourth elements AND and with the input of the second element NOT, the second input of the fifth element OR is connected to the output of the seventeenth element And, with the input of the second totalizing counter is connected to the output of the eighteenth AND element, the control input is with the zero output of the first reverse counter through the seventh OR element, and the output is with the summing input of the fourth reverse counter connected by the subtracting input and information output to the output and second input of the thirteenth element, respectively And, and with a zero output - to the second input of the fourth element And and to the first input of the seventeenth element And, the fourth output of the pulse distribution unit is connected to the second input of the eleventh, the first input of the eighteenth and with the third input of the thirteenth AND element, the inputs of the comparison unit are connected to the outputs of the third and fourth totalizing counters, and the output is connected to the first input of the nineteenth AND element, connected by the output to the first input of the eighth OR element, the output of which is connected to the first input ninth OR gate connected to the output of the second output device, and a second output vhodomk fourteenth aND gate, the counting input of the third adder connected to the output of the counter 1 th element dvadtsato- and And, connected by the outputs with the outputs of the twenty-first AND element and the tenth OR element, the output of the second element is NOT connected to the second inputs of the eighth, sixteenth and eighteenth and to the first input of the twenty-first AND element, and the second inputs of the seventh and eighth OR elements, element OR, counting input
    954000 6 of the fourth totalizing counter and the second inputs of the fourteenth, nineteenth and twenty-first elements AND are connected to the corresponding inputs of the device.
    In FIG. 1 shows a functional diagram of a device; in FIG. 2 is an example of the contour of a workpiece prepared for processing and the path of the cutting edge of the cutter.
    The device contains the first one, the second one. 2, third 3 and fourth 4 totalizing counters, a reference frequency generator 5, a pulse distribution unit 6, a drive control unit 7, a delay element 8, a comparison unit 9, a trigger 10, 15 detector 11, a spindle load limit sensor 12, the first 13 and the second 14 elements are NOT, the first 15, the second 16, the third 17 and the fourth 18 are reversible counters, 19-28 from the first 20 to the tenth respectively OR elements, 29-49 respectively from the first to the twenty first elements AND, 50-54 inputs and 55, 56 device outputs. In FIG. 1 also denotes —C j state counters — 25 counters 1, 2, 15, 16, and 17, respectively.
    The device operates as follows.
    The generator 5 generates rectangular pulses that have a predetermined frequency. The program of work is recorded on a program carrier, where are the DEN signals ER, CR mean respectively the end of the pulse distribution operation, the beginning of the program, the end of the program command, and the read end signals DE N, EP, CR are supplied to the inputs 50, 51, 52, respectively. Signals + X, -X, + 7 and -Z are removed from the outputs of block 6. 40
    The detector 11 is triggered when the contents of the counter 1 reaches the specified value of the signal I. The negative value of this signal (a) affects the input of the AND element 46, from the output of which 45 information is transmitted to the input of the counter 2 as an additional signal. When a signal appears at input 50 or when the information of counter 15 is zero (C 3 = -0), counter 2 is reset to zero. The output signals of counter 2 go to the summing input of counter 18, at the output of which one signal is generated when its information is not equal to zero. This signal affects the input of element And 41. The signal, which is 55 when the counter 17 is in zero state, goes to the input of element And 41, the output signal of which acts on the subtractive input of the counter 18. The signal that appears when the counter 18 is in the zero state affects the input of the AND element 45, the output signal of which goes to the inputs of the And 44 and 43 elements through the OR element 23 together with the signal from the output of element And 29, also affecting the subtracting input of counter 17. The signal from the output of element NOT 14 approaches the input of element And 44, which transmits information to the input of counter 1. State C1 of counter 1 is transmitted to the input of detector 11. Counter 1 is reset to zero when the state Cj of the counter 15 becomes zero. The signal from the output of the detector 11 also enters the input of the And 43 element through the element NOT 14, and the output of the And 43 element is connected to the input (—X) of the block 7. In addition, the output of the detector 11 is connected to the input of the And 35 element, the output signals of which are transmitted to element OR 20, The pulse signal generated when the load on the main spindle of the machine increases above the permissible limit value appears at the output of the sensor 12, which is connected to the summing input of the counter 16 through the element OR 20, as well as with one of the inputs of the elements OR 22 and AND 37 through the OR element 21. Signal Indicating the availability of information in the counter 16, is different from zero, is input to AND gate 34, the output of which is transmitted to the subtracting input of the counter 16, designed for counting the distributed pulses when controlling in + X direction. The output signal of this counter, when it is in the zero state, is fed to the input + X of block 7 through the AND 38 and OR elements 22. A short signal is generated at the output of the counter 16 immediately after its content becomes zero, and this short pulse is transmitted to the AND element 39 through delay element 8. A part of the output signal of the delay element 8 is transmitted to the output 55 for rewinding the program carrier and to the input of the And 31 element through the HE 13 element.
    The generator 5 supplies pulses to the inputs of the elements And 29 and 30.
    The counter 17 counts the pulses corresponding to the stroke length of the machine in the + X direction, which is a function of exceeding the torque value of the permissible value.
    . . 954000
    Counter D5 is provided for counting pulses when the cutting edge of the machine moves in the + 7 direction. During the movement of the cutting edge in the direction from point A to point H (Fig. 2), the pulse order for the -X direction is counted by counters 1 and 2. When information is reached in counter 1 of the value corresponding to the specified value of a, a signal is generated at the output of detector 11, as a result of which the motor (not shown) stops its movement in the directions -X and + Z (point B).
    At the same time, counter 2 stops counting and its information is transmitted to a count of * 5 hours 18. During the time interval when the cutter is in place, block 6 distributes the pulses from point B to point H, while the distributed pulses for directions along the axes -X and + Z sub-20s are read by counters 16 and 15, respectively. At the end of the specified distribution, that is, at point H, the distinctive marking signal provides the end of the distribution end signal at input 15 50. However, in the case where the output of the detector. 11, 1 is present, and at the output of element And 49 is O, counter 3 does not work. When reading the information of the next frame (from point N to to point I), the information of the counter 4 takes on the following value, and the impulses are distributed for the -X and + Z directions. These pulses are distributed into the gap 35 vre- Meni read from the counters 16 and 15. At this time, when a signal is present at the output of the detector 11 in the counter information 3 retains its zero value, whereby the output bpo- Single 9 40 not formed output signal. In this regard, the signal at input 52 does not cause the formation of a signal ending the distribution of pulses at output 56. I
    Then, after reading the next frame (from point I to point K), the distributed pulses for ~ Z. directions are subtracted from the number stored by counter 15. Upon reaching the point L · (pulse distribution time from 1 to K), which has the same coordinate as point B, the cutter stops at point B, while the information of the counter 15 takes a zero value, the pulses are distributed for the section between. B and K, the element And 40 opens and the cutter performs processing when moving from point B to point M in the direction ~ Z. During the cutting process, if the load of the torque exceeds the permissible maximum value, the cutter moves in the + X direction at a speed corresponding to the excess of the torque (point).
    The number of pulses corresponding to the indicated movement in the + X direction is added to the number of counters 16 and 17. In the general case, the number of pulses corresponding to the movement in the + X direction, which is a function of the excess load of the torque on the main spindle, is counted by the counters 16 and 17. When when the cutter reaches point M, the information of the next frame is read, while the distribution of pulses continues and the cutter moves from point M to point L.
    When reading from I to K and from K to Z in the + X direction, the distributed pulses are subtracted from the number stored by the counter 16. The movement of the tool in the -Z direction is determined by the corresponding distributed pulses.
    When the cutter reaches the point Ό at which, in accordance with the program, the cutter stops, the information of the counter 16 takes a zero value. Immediately after this, a signal with a delayed period is generated at the output of element 8, after which the distributed pulses for the + X direction are directly sent to block 7 through the elements AND 39 and OR 21 and 22. As a result, the cutter moves from point D to point E along the programmed path, and the distributed impulses dpya + X direction in this period of time are added to the information contained in the counter 17 through the element OR 21.
    When the output signal of element 8 becomes equal to zero (the cutter at this time is at point E), the cutter stops and at the same time a signal is generated at the output 55 for rewinding the program tape. rj
    The generator 5 acts through the elements AND 44 and OR 24 on the input Z of the block 7 and through the elements AND 30 and OR 19 on the counter 15, after which the cutter begins to move in the + Z direction. The information of the counter 15 is added to the pulses corresponding to the movement of the cutter in this direction. The movement of the cutter during this period of time occurs at a high speed, the cutter moves in the direction from point E to point F. When the cutter reaches point F, the Z coordinate of which coincides with the Z coordinate of point B, counter information '15 is reset to zero, and element And 30 is closed. As a result of this, the movement of the tool in the + Z direction stops. At the same time, the information accumulated in the counters 1, 2 and 4 is also reset to zero.
    The generator 5 further generates a rectangular signal ’, which through the elements AND 29, OR 23 and AND 43 acts on. input -X block 7, after which the cutter begins to move in the -X direction. Impulses com 1.
    melt away
    17.
    After the cutter reaches point B, the information of the counter 17 is reset to zero, the element And 29 is closed and the movement of the cutter in the -X direction is stopped. In addition, after the formation of a signal at input 50 about the end of the distribution of pulses, which passes through the elements OR 26 and 27, the device again vkupyunetsya in work. '.
    At the end of reading the program from point A to point H, the distribution of pulses for -X and * 7 directions begins, since the information of counter 18 is not equal to zero at this time, the elements And 45 and 32 are closed, as a result of which the cutter does not move. The pulses for the -X direction are counted by counter 2. The output, t signal of element AND 41 is subtracted from the number stored by counter 18. When the cutter reaches point B, at which the cutter stops, the information of counter 18 is reset to zero, and, since the elements And 45 and 32 at this time they are open, the cutter continues to move along the programmed path, and counter 1 reaches a predetermined value in advance, a signal is generated at the output of detector 11, after which the cutter stops and the contents of counter 2 are replaced by information from counter 18. Counters 1 and 2 do not work at this time. In addition, the And 35 element opens, as a result of which the counters 15 and 16 are turned on, and the cutter starts moving in the - 'Z direction, which happens in a similar way. Next, the cutting operation continues with the repetition of the considered cycle.
    The application of the proposed device allows you to set the optimal cutting depth, which prevents counters from being counted. At the same time, these pulses are subtracted from the number stored by the counter
    IS zS
    954000 Yu damage to the tool, since the workpiece is only touching the cutting edge of the tool.
    权利要求:
    Claims (2)
    [1]
    (54) DIGITAL TOOL FOR TWO-COORDINATE CONTROL OF METAL-CUTTING MACHINE The invention relates to automation, in particular, to control devices for meta-cutting machines that prevent breakage of the cutter and reduce just the time of the machine. A device for controlling the machine is known, in which, when the maximum torque of the machine exceeds the maximum torque, the cutter is retracted from the workpiece, thus reducing the torque. In such a device, an optimal load value equal to the upper permissible value is maintained, which allows the machine to operate with maximum efficiency L-U. However, when the tool moves along the workpiece along the contour specified by the program, the non-sharpened part of the tool can touch the workpiece and hit it. This leads to breakage of the tool, since the non-sharpening part of the tool is not as strong as its cutting edge. The closest in technical essence to the invention is a program control unit dp, containing a block for setting and distributing information, connected by outputs via interconnected elements AND, OR, and delays and summing and reversing counters to control units of coordinate drives 2. A disadvantage of the known device is low accuracy. The purpose of the invention is to improve the accuracy of the device. The goal is achieved by the fact that a digital device for two-coordinate control of a cutting machine, comprising a reference frequency generator, the output of which is connected to the first input of the first and second elements AND, a pulse distribution unit connected to the first output of the first reversible counter through the third element And second output - with a summing input of the first reversible .th counter through the successively included fourth epement AND, the fifth element AND and the first element OR, the third E yo ohm - with the subtracting input of the second reversible counter through the sixth And ement, and the fourth output - with the summing input of the second reversible counter through the gradually included seventh And And second epement OR delay element, two summing counters, the eighth And, four elements OR and drive control unit, contains a trigger,, bpoc comparison, two elements NOT, four epements OR, two reversible counters, a detector, two summing counters, thirteen elements AND, and a pulse sensor of spind Ate connected to the second input of the second epement OR, and to the first input of the third OR element connected to the first input of the first E and And through the fourth OR element to the first input of the drive control unit, the zero output of the second reversible counter connected to the second input the fourth epement OR through the tenth element AND, connected by the second input to the third output of the pulse distribution unit and to the first input of the eleventh AND element, the output of which is connected to the second input of the third OR element, and the second input is connected to the first output of the device, to the second input of the second element I, to the input of the first epement NOT and through the delay time to the information output of the second reversible counter and to the second input of the sixth element I, the second input of the ninth element I connected to the first input of the twelfth element And through a trigger with zero output of the first reversible counter and with the second input of the first E and E, connected by the third input to the information output of the third reversing counter, the sum of which is connected to the output The ninth E and E, the subtracting input — with the output of the first E and And with the first input of the fifth OR element, and the zero output — with the first inputs of the thirteenth and fourteenth And elements, the second input of the third And, pkpyuchen to the output of the first element, HE and the output - to the second input of the twelfth epimet And, connected by the output to the second input of the drive control unit, the third input of which is connected through the sixth element OR to the output of the eighth element And connected by the first input to the output of the fourth element And the second input of the sixth e OR is connected to the second input of the first element OR and to the output of the second element AND connected by the third input to the information output of the first reversible counter, the output of the fifteenth element AND is connected to the fourth input of the drive control unit, the first input to the output of the second element NOT, and the second input - to the output of the first OR element and to the first input of the sixteenth element AND, connected by an output to the counting input of the first summing counter, the control input of which is connected to the zero output of the first reversing the counter, and the outputs to the detector inputs connected by the output to the second inputs of the seventh and fourth elements AND and to the input of the second element NOT, the second input of the fifth element OR connected to the output of the seventeenth element And, the counting input of the second summing counter connected to the output of the eighteenth ement AND , the control input is with the zero output of the first reversible counter through the seventh element OR, and the output with the sum) input of the fourth reversing counter connected by a subtracting input and information output to the output and the second input of the thirteenth element I, respectively, and the zero output to the second input of the fourth element I and to the first input of the seventeenth element I, the fourth output of the pulse distribution unit is connected to the second input of the seventeenth, the first input of the eighteenth and the third input of the thirteenth element And, the inputs of the comparison unit connected to the outputs of the third and fourth summing meters, and the output - to the first input of the Dev of the thirteenth element AND, connected by the output to the first input of the eighth element OR, the output of which is connected It is connected to the first input of the ninth OR epimete connected by the output to the second output of the device, and the second input to the output of the fourteenth element AND, the counting input of the third summing counter connected to the output of the twentieth epic element AND connected to the outputs of the twenty-first element AND the tenth element OR, the output of the second element is NOT connected to the second inputs of the eighth, sixteenth and eighteenth and to the first input of the twenty-first elements AND, the second inputs of the seventh and eighth elements OR, the strokes of the tenth element OR, the counting input of the fourth summing counter and the second inputs of the fourteenth, nineteenth and twenty-first elements AND connected with the corresponding inputs of the device. FIG. 1 shows a functional diagram of the device; in fig. 2 shows an example of the contour of the part prepared for machining and the path of the cutting edge of the tool. The device contains the first 1, the second. 2, third 3 and fourth 4 summing counters, reference frequency generator 5, pulse distribution unit 6, drive control unit 7, delay element, comparison unit 9, trigger 10, detector 11, spindle load cell sensor 12, first 13 and the second 14 elements NOT, the first 15, the second 16, the third 17 and the fourth 18 reversible counters, 19-28 from the first to the tenth, respectively, the elements OR 29-49 respectively from the first to the twenty first And elements, 50-54 inputs and 55 , 56 device outputs. FIG. 1 also indicates the j states of counters 1, 2, 15, 16, and 17, respectively. The device operates as follows. The generator 5 generates square-wave pulses that have a predetermined frequency. The program of work is recorded on a program carrier, where the signals DENJ ER and CR denote, respectively, the end of the pulse distribution operation, the beginning of the program, the end of the program command, and the read end signals DE N, EF, CR are fed to inputs 50, 51, 52, respectively. Signals + X, -X, t 7, and -Z are removed from the outputs of block 6, Detector 11 is triggered when the contents of counter 1 reaches a predetermined value of signal I. Negative value of this signal (5) affects the input element I 46, from the output of which information is transmitted to the input of counter 2 as a complementary signal. When a signal appears at the input 5O or in the case when the information of the counter 15 is equal to zero (), the counter 2 is reset to zero. The output signals of counter 2 are fed to the summing input of counter 18, the output of which produces one signal, when its information is not equal to zero, this signal acts on the input of the element 41. The signal formed in the zero state of the counter 17 enters the input of the element 41 The output signal of which acts on the subtracting input of the counter 18. The signal appearing when the zero state of the counter 18 acts on the input of the element is And 45, the output signal of which is fed to the inputs of the elements 44 and 43 through the element OR 23 KviecTe with a signal with the output element 29, which also acts on the subtracting input of counter 17. The signal from the output of element 14 goes to the input of element 44, which transmits information to the input of counter 1. State C.) of counter 1 is transmitted to the input of detector 11. Counter 1 is reset to zero when the state C of the counter 15 becomes equal to zero. The signal from the output of the detector 11 is also fed to the input of element AND 43 through the element NOT 14, and the output of element And 43 is connected to the input (-X) of block 7. In addition, the output of the detector 11 is connected to the input of element And 35, the output signals of which are transmitted to the OR 2 O element, a pulse signal formed by an increase in the load on the main spindle of the machine above the allowable limit limit, appears at the output of sensor 12, which is connected to the summing input of counter 16 through the element OR 20, as well as one of the inputs of the elements OR 22 and 37 through the element OR 21. Sy A graph indicating the presence of information in the counter 16, other than a zero value, is fed to the input of the AND 34 element, the output of which is transmitted to the subtractive input of the counter 16, designed to count the distributed pulses during control in the + X direction. The output signal of this counter in its zero state is fed to the input + X of block 7 through elements 38 and OR 22. At the output of counter 16 a short signal is generated immediately after its content becomes zero, and this short pulse is transmitted to the element And 39 through the element 8 delay. A part of the output signal of the delay element 8 is transmitted to the output 55 to rewind the program carrier and the input element AND 31 through the element NO 13. The generator 5 sends pulses to the inputs of the AND elements 29 and 30. Counter 17 counts the pulses corresponding to the length of the machine in the + X direction, which constitutes the function of torque magnitude over the allowable value. 7 ..95 Counter D5 is provided for counting the impulses when the cutter moves in the direction of the cutter moving in the direction from point A to point H (FIG. 2). The distribution of impuses for the -X direction is counted by counters 1 and 2. When the information in the counter is reached 1 value corresponding to a given value of c. A signal is generated at the output of detector 11, as a result of which the engine (not shown) stops its movement in directions -X and (point B). At the same time, counter 2 stops counting and its information is transmitted to counter 18. During the time interval when the cutter stands still, block 6 distributes pulses ot points to point H, while distributed pulses for directions along the X and under axes. are counted by counters 16 and 15, respectively. At the end of the specified distribution, i.e. at point H, the signal of the distinctive marking ensures the termination of the distribution termination signal at the input 5O. However, in the case when the output of the detector. 11 is present 1, and the output of the element I 49 is O, the counter 3 does not work. When reading the information of the next frame (from point H to point I), the information of counter 4 takes the following value, and the impulses are distributed for -X and + Z directions. These distributed pulses during this time interval are read by means of counters 16 and 15. At this time, if there is a signal at the output of the detector 11, the information in the counter 3 retains its zero value, as a result of which no output signal is formed at the output 9. In connection with this, the signal at input 52 does not cause the formation of a signal for the end of the distribution of the pulses at the output 56. Then, after reading the next frame (from point I to point K), pacnjie pulses di. the directions are subtracted from the number memorized by the counter 15. When the point L is reached (the time of distribution of pulses from I to K), the same coordinate as point B, the tool stops at point B, while the information of counter 15 takes zero values, pulses distributed. c for the area between. B and k, the element 40 also opens and the cutter performs processing when it moves from point b to point m in the direction of -Z. During the cutting process 0, if the load of the torque exceeds the permissible maximum value, the cutting moves in the + x direction with speed corresponding to the magnitude of the torque (point). The number of impulses corresponding to the specified movement in the + X direction is added to the number of counters 16 and 17. In general, the number of impresses corresponding to the movement in the + X direction, which is a function of the torque exceeding the main spindle, is counted by counters 16 and 17. When the cutter reaches point M, information of the next frame is read, while the distribution of impulses continues and the cutter moves from point M to point D. Distributable impulses when reading from I to K and from K to Z in the + X direction ii subtracted from the number counter stored in the cutter 16. The movement-Z direction are determined corresponding dispensed by pulses. When the chisel reaches the point Yu, at which, in accordance with the program of rez, it stops, the information of the counter 16 takes a zero value. Immediately after this, a signal with a delayed period is formed at the output of element 8, after which the distributed pulses for the + X direction directly arrive at block 7 through elements AND 39 and OR 21 and 22. As a result, the cutter moves from point 13. to point E along the programmed paths, and the distributed impuses for the + X direction in this period of time are added to the information contained in the counter 17 through the OR element 21. When the output signal of the element 8 becomes zero (the tool at that time is at the point ), The tool is stopped, and simultaneously a signal is generated on Yield 55 for rewinding the tape program. The generator 5 acts through the elements AND 44 and OR 24 on the input Z of block 7 and through the elements AND 30 and OR 19 to the counter 15, after which the tool begins to move in the direction. The information of the counter 15 in this case is added to the pulses corresponding to the movement of the tool in this direction. The movement of the tool at this time interval occurs at high speed, the tool moves in the direction from point E to point F. When the tool reaches point F, the Z coordinate of which coincides with the Z coordinate of point B, the information of counter 15 is reset to null. closes. As a result, the movement of the cutter direction stops c. At the same time, information accumulated on counters 1, 2, and 4 is also reset to zero. The dapee generator 5 generates a square-shaped signal, which through the elements AND 29, OR 23 and AND 43 acts on. input -X block. 7, after which the tool starts moving in the -X direction. They are then counted by the counter 1. At the same time, these pulses are subtracted from the number stored by the counter. When the point B reaches the point B, the information of the counter 17 is reset to the pin, the element 29 stops and the cutter moves in the -X direction. In addition, after the formation of a signal at the input 50 about the end of the distribution of pulses, which passes through the elements OR 26 and 27, the device starts up again. . At the end of reading the program from point A to point H, the distribution of pulses for -X and 2. the direction of the scientific research institute begins, since the information of the counter 18 is not zero at this time, the elements 45 and 32 are closed, as a result the cutter does not move. Pulses for the -X direction are counted by a counter.
    [2]
    2. The output signal of AND 41 is subtracted from the number stored by the counter 18. When the cutter reaches the point B where the cutter stops, the information of the counter 18 is reset to zero and, since the elements 45 and 32 are open, the cutter continues to move along the programmed path, and the counter 1 reaches a predetermined value, a signal is generated at the output of the detector 11, after which the cutter stops and the contents of the counter 2 are replaced by the informodia of the counter 18. The counters 1 and 2 do not work at this time. In addition, element 35 is opened, as a result of which counters 15 and 16 are screwed into operation, and the tool begins to move in the Zi direction, which occurs in a similar way. Further, the cutting operation continues with the repetition of the considered cycle. The use of the proposed device allows an optimum cutting depth to be established, which prevents damage to the cutting, since the workpiece is only concerned with the cutting edge of the tool. A digital device for two-coordinate control of a cutting machine, comprising a reference frequency generator, the output of which is connected to the first input of the first and second elements And, a pulse distribution unit connected by a first output to the subtracting input of the first reversible counter via the third element And the second output to the summing the input of the first reversible counter through the sequentially connected fourth element AND, the fifth element of AND and the first element OR, the third output with the subtractive ode second reversible counter through shchy Element And, and the fourth output - with a summing input of the second reversible counter through sequentially connected seventh And element and second OR element, delay element, two summing counters, eighth And element, four OR elements and the drive control unit, different so that, for the purpose of controlling the accuracy of the device, it contains a trigger, a comparison block, two elements NOT, four elements OR, two reversible counters, a detector, two summing counters, thirteen elements AND and a pulse spindle load limit sensor connected by the output to the second input of the second OR element and to the first input of the third OR element connected by the output to the first input of the ninth AND element and through the fourth OR element to the first input of the drive control unit, zero output of the second reversing the counter is connected to the second input of the fourth element OR through the tenth element I, connected by the second input to the third output of the impedance distribution unit and to the first input of the eleventh epement And, the output of which is Yuchen to the second input of the third element OR, and the second input to the first output of the device, to the second input of the second element AND, to the input of the first element NOT and through the delay element to the information output of the second reversible counter And to the second input of the sixth element AND of that element And is connected to the first input - the twelfth element 9 And through a trigger with zero output of the first reversible counter and with the second input of the first element And connected by the third input to the information output of the third reversible counter a, the summing input of which is connected to the output of the ninth element AND, the subtracting input - with the output of the first element AND and the first input of the fifth element OR, and the zero output with the first inputs of the thirteenth and fourteenth elements And, the second input of the third element AND is connected to the output of the first element is NOT, and the output is to the second input of the twelfth element I, connected by the output to the second input of the drive control unit, the third input of which is connected: through the sixth element OR to the output of the eighth element I, connected by the first ъ or cm. The fourth fourth element AND, the second input of the sixth element OR is connected to the second input of the first element OR and the output of the second AND element connected by the third input to the information output of the first reversible counter, the output of the fifteenth And element is connected to the fourth input of the drive control, the first input is to the output of the second element NOT, and the second input is to the output of the fifth OR element and to the first input of the sixteenth element I, connected by the output to the net input of the first summing counter, whose control input is It is connected to the zero output of the first reversible counter, and the outputs to the inputs of the detector connected to the outputs and the second inputs of the seventh AND fourth element and the input of the second element NOT, the second input of the fifth element OR connected to the output of the seventeenth element AND, the counting input of the second summing the counter is connected to the output of the eighteenth element AND, the control input with zero output of the first reversible 012 counter through the seventh element OR, and the output with the summing input of the fourth reverse counter connected by subtracting The input and information output to the output and the second input of the thirteenth element AND respectively, and the zero output to the second input of the fourth element And to the first input of the seventeenth element And, the fourth output of the pulse distribution unit is connected to the second input of the seventeenth, first input of the eighteenth and the third the input of the thirteenth And elements, the inputs of the comparison unit are connected to the outputs of the third and fourth summing counters, and the output to the first input of the nineteenth And element connected to the nepBbiM input the eighth element OR, the output of which is connected to the first input of the ninth element OR connected by the output to the second output of the device, and the second input to the output of the fourteenth electrical element AND, the counting input of the third summing counter connected to the inputs of you: the twenty first element AND the tenth element: OR, the output of the second element is NOT connected to the second inputs of the eighth, sixteenth, and eighteenth and to the first input of the twenty first element AND, and the second inputs of the seventh and the seventh element OR, the inputs of the tenth element OR, the counting input of the fourth summing counter and the second inputs of the fourteenth, nineteenth and twenty-first elements And are connected to the corresponding inputs of the device. Sources of information taken into account during the examination 1. Japan patent No. 45-24594, cl. q 05 19/00, publ. 1970. 2, USSR Author's Certificate No. 3084lfe, cl. Q 05 B 19/18, 1968.
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    同族专利:
    公开号 | 公开日
    FR2120169B1|1974-06-21|
    CA951812A|1974-07-23|
    GB1377199A|1974-12-11|
    DE2165862A1|1972-07-20|
    US3811345A|1974-05-21|
    JPS5114746B1|1976-05-12|
    FR2120169A1|1972-08-11|
    DE2165862C2|1983-11-03|
    引用文献:
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    US2907937A|1957-12-26|1959-10-06|Ibm|Digital servo system|
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    JPS5726067B2|1971-10-15|1982-06-02|US4033206A|1974-07-11|1977-07-05|Daihatsu Motor Co., Ltd.|Numerically controlled machine tool|
    JPS5138235U|1974-09-14|1976-03-22|
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    NL8200674A|1981-02-26|1982-09-16|Barcellini Lauro|MIXING AND STIRRING EQUIPMENT INTENDED FOR THE CONSTRUCTION SITE, IN PARTICULAR FOR CEMENT, SPECIES, MORTAR AND INERT MATERIAL.|
    US4506321A|1982-09-08|1985-03-19|Imec Corporation|Motion control system with adaptive deceleration|
    KR0148748B1|1988-09-16|1998-08-17|장 크라메르, 한스 루돌프 하우스|A multiphase cyclosporin composition|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP45123266A|JPS5114746B1|1970-12-31|1970-12-31|
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