• 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:
    A hardness tester has at least one indenter (9) arranged on a holder (15) for producing an impression (27) in a test object (3) and at least one objective (12) for detecting at least one measure of the indentation (27) in the test object (3 ), which can be positioned alternately over the test object (3). The holder (15) is rotatable about its longitudinal axis mounted on the hardness tester (6).
    公开号:AT511102A4
    申请号:T2112011
    申请日:2011-02-17
    公开日:2012-09-15
    发明作者:Robert Ing Hoell
    申请人:Qness Gmbh；
    IPC主号:
    专利说明:

    - 1 - • ·
    The invention relates to a hardness tester with at least one indenter arranged on a holder for producing an impression in a test object and at least one objective for detecting at least one measure of the impression in the test object, which can be positioned alternately over the test object.
    The invention relates to the weather a method for adjusting the rotational position of a recorded on a holder indentor hardness testing.
    Hardness testers are known which have both indenters and optical devices in order to be able to measure the impression produced by the indenter immediately. The indenter and the optical device, in particular its lens, are arranged on swivel bodies or revolver heads, so that the impression after its generation by the indenter can be measured directly by pivoting the swivel body or rotating the turret.
    It often happens that with a test object not only a single measurement but a series of measurements is to be performed, whereby the measurement series must have a certain orientation on the test object, for example at right angles to a certain object edge. An indenter, which produces a deviating from a circular impression, in particular square or rhombic impression, must also have a certain orientation to this object edge usually also.
    In these cases, it is necessary to turn the workpiece or test object so far that the position of the impression corresponds to a predetermined or required position. This is not only time consuming but also inaccurate when the alignment of the test object is not precise.
    The invention is therefore based on the object to provide a hardness tester available, in which this effort or these inaccuracies are avoided.
    This object is achieved in a hardness tester of the type mentioned above in that the holder is mounted rotatably about its longitudinal axis on the hardness tester.
    This object is further achieved in a method of the type mentioned above in that the indenter is so far rotated on the holder about its longitudinal axis until the alignment of the indenter corresponds to a desired position.
    In the invention, the way will be marked, not to turn the test object but the indenter on its holder until the indenter or the impression produced by this in the test object corresponds to a predetermined orientation or desired position, in the - 2 -
    a precise measurement of at least one measure of the impression is possible. All impressions of this measurement series generated by the indenter are subsequently in the correct position, so that no further positioning of the test object is required for an exact measurement.
    When the indenter is fixed to its holder in a defined or known position and the holder is in turn positioned in a defined or known position on the hardness tester, in particular the swivel body or turret, the alignment of the indenter is known and can be either manual or preferred be electronically controlled by the hardness tester in the required position to be rotated.
    However, if the rotational position of the indenter on his holder is not known and / or the holder is arranged in an undefined rotational position on the hardness tester, then the rotational position of the indenter must be determined or adjusted on the holder, so this then easily or manually electronically controlled in the correct position with respect to the test object can be rotated.
    In order to set or determine the rotational position of the indenter on the hardness tester, provision is made in a preferred embodiment for a reference point to be arranged on the holder, to which a reference point which is stationarily arranged on the hardness tester is assigned.
    In this embodiment of the invention, the indenter is mounted by means of its holder on the hardness tester, that the two reference points have a defined position to each other, for example, are exactly opposite each other. Subsequently, the actual orientation or rotational position of the indenter is then determined, for example by a trial impression, and a correction angle of rotation is determined by which the indenter must be rotated so that it assumes a specific position. This correction angle of rotation can then be added to an angle at which the indenter must be aligned for the actual measurement. This angle can be predetermined for example by a predetermined or defined position of the test object during the measurement or before the measurement either manually or automatically by the hardness tester, more precisely its optics in conjunction with software, which recorded by the optics position of the test object can be determined and evaluated.
    Theoretically, it is of course also possible to determine the position of the indenter with respect to its reference point on the holder and the resulting correction angle of rotation outside the hardness tester and then take into account when installing the indenter into the hardness tester accordingly.
    If the correction rotation angle is taken into account automatically or electronically, this is stored to a specific indenter in the controller and automatically taken into account when a measurement is to be performed with this indenter. Since electronically controlled hardness testers are often used to preprogram entire series of measurements, a fully automatic measurement of larger series with different test objects is possible after the correction angle has been detected for the first time, without any manual adjustment or consideration of the position of the test object with respect to the indenter's rotational position requirement.
    By such a reference point, the exact positioning of the indenter on the hardness tester is always possible again, even if the indentor was removed from the hardness tester and re-assembled at a later date.
    As an alternative to determining a correction angle of rotation, which must be taken into account in each measurement, it is also possible according to the invention that the reference point is arranged on a carrier in the direction of rotation of the holder displaceable and fixable on the holder. The correction angle of rotation can be taken into account once in this embodiment of the invention in that the reference point is mounted on the holder twisted around this correction Drehwin- angle on the holder, so that the reference points are exactly opposite each other in the starting position or basic position of the indenter, Consequently, therefore, the correction rotation angle no longer needs to be considered or is zero.
    Further preferred embodiments of the invention are the subject of the remaining dependent claims.
    Further features and advantages of the invention will become apparent from the following description of preferred embodiments of the invention with reference to the accompanying drawings. It shows:
    1 shows an embodiment of a hardness testing machine with a hardness tester according to the invention in an oblique view,
    2 shows a section through an embodiment of a hardness tester,
    FIG. 3 is an enlarged view of a detail of the hardness tester of FIG. 2; FIG.
    4 shows a further detail of the hardness tester of FIG. 2, and FIG. 5 shows a microscope image of a test object
    The hardness testing machine shown in FIG. 1 has a machine frame 1 with a table 2, on which test objects 3, in the example shown a pipe, are placed. Under the table 2, an electric motor is arranged, which drives a vertically aligned threaded spindle 4 via a spindle gear. With the threaded spindle 4, a spindle nut 5 acts - 4 -
    together, which is connected to a hardness tester 6. The hardness tester 6 is further on a not shown in detail, vertical guide 7 on the machine frame 1 up and down, so to the test object 3 and away from this, displaced. On the hardness tester 6 may further be arranged a hold-8, which serves to hold the test object 3 on the machine table 2, to allow an accurate measurement.
    On hardness tester 6 at least one indenter 9 is arranged, which may be, for example, an indenter for a hardness test according to Vickers, Brinell or Rockwell depending on the measuring method used. The machine according to the invention is not limited to a specific form and type of hardness testing but can be used for all possible or known forms and types of hardness tests, but is preferably used in Eindringkörpem, which deviates from a circular impression, for example, square and rhombic particular To create an impression.
    In the embodiment of FIG. 1 is a test head 10 in the form of a swivel body and in the embodiment of FIG. 2 and 3, a test head 11 is shown in the form of a turret on which indenter 9 and lenses 12 are located, which at an angle of 45 ° are aligned with the axis of rotation 13 of the probe 11 and are rotated depending on the test method to be used in their working position. In the illustrated embodiment of Fig. 2 and 3, the indenter 9 is in the working position.
    The indenter 9 is attached to a carrier 14, which is held axially displaceable in a holder 15 but not rotatable. On the holder 15, a support in the form of a pin 16 is mounted, which at its free end a reference point 18 aulweist. The reference point 18 can be embodied, for example, as a magnetic or magnetizable insert, for example a pin-shaped insert, at the end of the pin 16. The reference point 18 is assigned a reference point 19, which is attached to the hardness tester 6. The reference point 19 is embodied, for example, as a sensor for use on the pin 16, which recognizes when the reference point 18 lies exactly opposite it. Other recognition systems, such as an optical recognition system, for example with a reflector as the reference point 18 and an optical transmitter / receiver as a reference point 19, are also conceivable.
    The holder 15 is rotatably supported about a roller bearing 20 on the turret 11 about its longitudinal axis 17. To rotate the holder 15, a gear 21 is attached to this, that is rotated by means of a worm shaft 22. For driving the worm shaft 22, a motor 23 is provided, which is fixed to the hardness tester 6.
    When the hardness tester 6 is driven downwards by the spindle drive 4. 5, that is to the test object 3, while the indenter 9 is in contact with the test object 3, the carrier 14 moves upwards within the holder 15 relative to the latter, whereby an over - 5 - * »
    Force measuring device 24, the force can be measured with which the indenter 3 is pressed onto the test object 3.
    If the exact rotational position of the indenter 9 on its carrier 14 and / or the Drehiage of the carrier 14 in the holder 15 and / or the rotational position of the holder 15 on the turret 11 is not known exactly, to determine the exact rotational position of the indenter 9 first Sample impression are made on a test object, with the reference points 18, 19 are exactly opposite in this sample impression. Based on the angle of rotation of the sample impression on the test object with respect to a reference position or reference line can then be determined a correction rotation angle to the indenter 9 must be rotated on its holder 15 so that it assumes its home position or reference position. Assuming the indenter 9 is rotated 15 ° counterclockwise with respect to its basic position or reference position, this 15 ° correction angle of rotation must be taken into account for each further adjustment.
    FIG. 5 shows a microscope image of a test object 3 with an object edge 25 in which, for example, three measurements with rhombic penetrating bodies 9 are to be carried out along a line 26 which is oriented at an angle of 90 ° to the object edge 25, which the FIG. 5 produce rhombic impressions 27.
    If the object edge 25 is rotated, for example, at an angle of 45 ° to a vertical reference line or reference position in the counterclockwise direction, the indenter 9, starting from the position in which the reference points 18, 19 exactly opposite each other, only by an angle of 30 ° are rotated counterclockwise to its desired position, if the correction rotational angle as previously assumed, for example, 15 °.
    Since the exact rotational position of the indenter 9 or the correction rotational angle is known, it can be entered into the control of the hardness tester 6, possibly stored there and subsequently taken into account automatically if a measurement on a test object 3 with a defined orientation or ., Target position of the impressions generated by the indenter 9 to be performed. The position of the test object 3 can be predefined either in a largely automated measurement in the controller or fed electronically into the controller or determined from case to case and entered in the controller, this being done either semi-automatically by a computer-aided detection system or manually can.
    In Fig. 1, a screen 28 of a controller is shown. Via the screen, if this is designed as a touch screen, or via a keyboard, data relevant for the measurement, such the correction rotation angle, input and output. Using suitable interfaces, relevant data for the measurement or measurement can also be input and output digitally.
    权利要求:
    Claims (2)
    [1]
    A hardness tester having at least one indenter (9) arranged on a holder (15) for producing an indentation (27) in a test object (3) and at least one objective (12) for detecting at least one measure of the Impression (27) in the test object (3), which are alternately positioned over the test object (3), characterized in that the holder (15) is rotatable about its longitudinal axis mounted on the hardness tester (6). 2. hardness tester according to claim 1, characterized in that on the holder (15) a reference point (18) is arranged, which is assigned to a hardness tester (6) fixedly arranged reference point (19). 3. hardness tester according to claim 1 or 2, characterized in that the hardness tester (6) has a motor drive (23) for the holder (15). 4. hardness tester according to one of claims 1 to 3, characterized in that the reference point (18) on a support (16) arranged in the direction of rotation of the holder (15) is immovably connected to the holder (15). 5. Hardness tester according to one of claims 1 to 3, characterized in that the reference point (18) arranged on a support in the direction of rotation of the holder displaceable and fixable on the holder (15) is attached. 6. hardness tester according to one of claims 2 to 5, characterized by a controller, with a memory in which for at least one holder (15) with a certain indenter (9), a setting is stored for a twist angle of the holder (15). 7. hardness tester according to one of claims 1 to 6, characterized in that the holder (15) and the lens (12) on a pivoting head (10) are arranged. 8. Hardness tester according to one of claims 1 to 6, characterized in that the holder (15) and the lens (12) on a turret (11) are arranged.
    [2]
    9. A method for adjusting the rotational position of a holder (15) received indentor (9) of a hardness tester (6), characterized in that the indenter (9) on the holder (15) about its longitudinal axis (17) is rotated so far until the alignment of the indenter (9) corresponds to a desired position. A method according to claim 9, characterized in that the rotation of the indenter (9) relative to a reference position is determined and that the detected angular deviation is stored as a correction rotational angle. A method according to claim 10, characterized in that during rotation of the holder (15) to bring them into a desired position, the correction angle of rotation is included in the angle of rotation. Method according to one of Claims 9 to 11, characterized in that, for a basic setting, a reference point fixed in the direction of rotation on the holder is brought to a reference point arranged stationary on the hardness tester in an initial position, then the holder is rotated with the indenter until the alignment of the indenter corresponds to a reference position and that the detected angular deviation is stored as correction angle of rotation. Method according to one of Claims 9 to 11, characterized in that, for a basic setting, a reference point on the holder is brought to a reference point fixedly arranged on the hardness tester in an initial position, then the holder is rotated with the indenter until the alignment of the indenter of a Corresponds to the reference position and that the reference point on the holder is rotated by the detected angular deviation on the holder (15).
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    同族专利:
    公开号 | 公开日
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    DE102012100639B4|2015-08-27|
    CN102645386A|2012-08-22|
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    ITMI20120165A1|2012-08-18|
    CN102645386B|2016-12-28|
    US20120210777A1|2012-08-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB678527A|1950-01-14|1952-09-03|Gkn Group Services Ltd|Apparatus for testing the hardness of materials|
    DE3000984A1|1979-01-18|1980-07-31|Hubert Dipl Ing Aschinger|MICROHARDENER|
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    US5616857A|1996-01-25|1997-04-01|Instron Corporation|Penetration hardness tester|
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    DE10163656A1|2001-12-21|2003-07-03|Agfa Ndt Gmbh|Hardness measuring device with a housing and an indenter, in particular a hand-held device|
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    CN201637643U|2010-04-13|2010-11-17|上海尚材试验机有限公司|Digital readout Vicker hardness tester|JP5977556B2|2012-03-27|2016-08-24|株式会社ミツトヨ|Hardness testing machine|
    JP6016626B2|2012-12-28|2016-10-26|株式会社ミツトヨ|Hardness testing machine|
    CN103267726B|2013-05-16|2016-04-27|江苏大学|A kind of agricultural material adheres to measurement mechanism|
    JP6615561B2|2015-10-09|2019-12-04|株式会社ミツトヨ|Hardness testing machine|
    AT518859B1|2016-08-12|2018-02-15|Qness Gmbh|Method and device for hardness testing|
    法律状态:
    2020-09-15| HC| Change of the firm name or firm address|Owner name: ATM QNESS GMBH, AT Effective date: 20200805 |
    优先权:
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    AT2112011A|AT511102B1|2011-02-17|2011-02-17|HARDENING TESTER AND METHOD FOR ADJUSTING THE HARDENING TEST APPARATUS|AT2112011A| AT511102B1|2011-02-17|2011-02-17|HARDENING TESTER AND METHOD FOR ADJUSTING THE HARDENING TEST APPARATUS|
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    CN201210039202.8A| CN102645386B|2011-02-17|2012-02-17|Hardness measuring device and the method being used for regulating hardness measuring device|
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