• 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 device is described for aligning an angle measuring device (1) with respect to two workpiece planes (2, 3) enclosing an angle to be measured, wherein the angle measuring device (1) comprises a rotating mirror (8) for deflecting a laser beam (10) perpendicular to the axis of rotation (7 ) of the mirror (8). In order to provide advantageous alignment conditions, it is proposed that the angle measuring device (1) is assigned an alignment stop (13) which determines a stop line (14) parallel to the axis of rotation (7) of the mirror (8) for both workpiece planes (2, 3).
    公开号:AT518637A4
    申请号:T50761/2016
    申请日:2016-08-24
    公开日:2017-12-15
    发明作者:
    申请人:Keba Ag；
    IPC主号:
    专利说明:

    The invention relates to a device for aligning an angle measuring device with respect to two workpiece planes enclosing an angle to be measured, wherein the angle measuring device has a rotating mirror for deflecting a laser beam perpendicular to the axis of rotation of the mirror.
    For non-contact measurement of the bending angle between the legs of a sheet to be bent in a bending machine measuring devices are known (JP 2002-59217 A), in which the fact is exploited that the radiation intensity of a reflected beam on a leg of the sheet, received in the emission direction of the laser beam largest is when the laser beam impinges perpendicular to the sheet metal leg. For this purpose, a mirror is provided in the region of the upper tool of the bending machine, which is rotated about an axis parallel to the apex axis of the bending angle and inclined to this axis of rotation at 45 °, so that in the direction of this axis of rotation incident on the mirror laser beam in one to the axis of rotation deflected perpendicular plane to the legs of the sheet to be bent and is reflected by the legs, in the emission direction when the laser beam is perpendicular to the respective leg. About the associated rotational position of the drive motor for the mirror then the respective angle between the two legs can be determined in a signal processing device. For equipping conventional bending machines with such measuring devices, however, these bending machines are constructive adapt, which makes retrofitting of bending machines with measuring devices of this type consuming. It has therefore been proposed to combine such measuring devices in a housing in order to provide a handset that does not require any retooling of the bending machines. Due to the measuring principle, however, it is necessary to align the angle measuring device relative to the workpiece planes whose mutual angle is to be measured such that the plane of the deflected laser beam determined by the rotating mirror is perpendicular to the workpiece planes, which is difficult to handle the angle measuring device connected is.
    The invention is therefore an object of the invention to provide a device for accurate alignment of angle encoders of the type described with respect to the workpiece planes whose included between them angle is to be measured without jeopardizing the ease of use of the angle encoder or impede the measurement process.
    Starting from a device of the type described above, the invention solves the task by the angle measuring device is associated with an alignment stop, which determines a parallel to the axis of rotation of the mirror stop straight line for both workpiece levels.
    Due to the fact that the straightening stop determines a stop straight line parallel to the axis of rotation of the mirror for the two workpiece planes, the axis of rotation of the mirror must be parallel to the geometrical line of intersection between the two workpiece planes, and thus parallel to the apex axis of the angle enclosed between the workpiece planes which satisfies the condition that the plane of the deflected laser beam determined by the rotating mirror is perpendicular to the workpiece planes. The angle measuring device is therefore to be inserted between the two workpiece levels in such a way that the leveling stop is supported by means of the stop line with respect to both workpiece levels. That in such an orientation, the rotational position of the angle measuring device relative to the two workpiece planes with respect to the axis of rotation of the mirror is not predetermined, as long as no additional support against a workpiece plane is provided, does not matter because it in the alignment of
    Angle measuring device arrives only on the axis of rotation parallel to the apex axis of the mirror, if it is ensured that the deflected laser beam can impinge perpendicularly on both workpiece planes, which can be ensured with ease of handling the angle encoder without difficulty, especially if the determined by the leveler clearance of the The axis of rotation of the mirror is limited by the two workpiece levels. To determine a corresponding stroke straight only two attachment points of the aiming stop required.
    However, the straightening stop need not be determined for each work plane a separate stroke straight when the two workpiece planes intersect in an edge, because in this case a cooperating with this cutting edge stop line is applied to both workpiece levels. If this cutting edge is not accessible or not available, then the straightening stop must determine a separate stroke for each workpiece plane. If the cutting edge between the two workpiece levels is freely accessible, then the leveling stop can advantageously comprise a directional ruler which can be supported in the cutting edge.
    If the straightening stop has a stop cylinder parallel to the axis of rotation of the mirror, which does not have to be circular, then the generatrices of this stop cylinder form the stop straight lines as a function of the size of the angle to be measured. The work piece planes in this case run tangentially to the stop cylinder. However, the stopper cylinder does not need to have a cylindrical shape, but only needs to determine a geometric cylinder shape by abutment points that specify a cylinder shape, such as is possible with two spaced at a mutual distance in the direction of the axis of rotation of the mirror balls or ball segments.
    So that the straightening stop can not shadow the workpiece planes with respect to the laser beam, it can have two stop sections on both sides of the plane of the deflected laser beam determined by the rotating mirror. In addition, this support on both sides of the laser beam plane facilitates the
    Angle measurement on workpieces with a comparatively short extension in the direction of the vertex axis of the angle to be measured. However, such shading may also be desirable in order to prevent reflections affecting the measurement result in the region of bending edges with larger bending radii. For this purpose, the straightening stop can shadow the workpiece in the region of the bending edge with respect to the laser beam and deflect the laser beam laterally.
    The alignment stop itself can be designed differently. Thus, it is particularly advantageous for retrofitting angle encoders, when the straightening stop forms a separate unit from the angle measuring device with a receptacle for the angle measuring device. It is merely to ensure that the recording specifies a corresponding orientation of the angle measuring device relative to the alignment stop. If the straightening stop is part of the angle measuring device, it is advisable to adjust the straightening stop on the housing of the angle measuring device between a rest position and a working position in order to obtain smaller outer dimensions for storage and transport.
    With the shift of the directional stop between a working and a rest position simple constructive conditions arise to provide the straightening stop with a closure for the laser exit opening in the housing of the angle measuring device, which covers this laser exit opening protective when the straightening stop is moved to its rest position.
    In the drawing, the subject invention is shown, for example. Show it
    1 shows a device according to the invention in a partially torn front view,
    2 shows this device in a frontal view,
    3 shows the device according to FIGS. 1 and 2 in a rear view on a smaller scale,
    4 shows a variant of a device according to the invention in a schematic front view,
    5 shows the device according to FIG. 4 in an end view on a larger scale, FIG.
    Fig. 6 is a representation corresponding to Fig. 4 another
    7 shows an end view of the device according to FIG. 6.
    As can be seen in FIGS. 1 and 2, the angle measuring device 1 for determining the angle α between two flat workpiece surfaces 2, 3, for example, a bent by means of a punch and a die sheet 4, a housing 5, in which all for the Measurement and the measurement display required means are summarized. These means comprise, in a purely schematic representation, a mirror 8 which can be driven by a motor 6 about an axis of rotation 7 and a laser transmitter 9 for a laser beam 10 which impinges on the mirror 8 in the direction of the axis of rotation 7 in order to be deflected perpendicularly to the axis of rotation 7. The deflected laser beam 10 sweeps over the two workpiece surfaces 2, 3 at a parallel to the apex axis of the measured angle α orientation of the axis of rotation 7 of the mirror 8 along the vertical axis to the apex axis, intersecting in the apex axis straight lines, which enclose the angle α between them. The incident on the workpiece surfaces 2, 3 laser beam 10 is reflected at the respective workpiece surface 2, 3, wherein only the reflected in the direction of laser beam 10, ie the perpendicular to the workpiece plane 2, 3 reflected laser beam 10, is evaluated for the determination of angle via a receiving device 11, in that the reflected position of the mirror 8 is assigned to this reflected laser beam 10. The measurement result is displayed in a display 12.
    The prerequisite for a faultless measuring process is that the housing 6 of the angle measuring device 1 with the axis of rotation 7 for the mirror 8 exactly parallel to the apex axis of the angle α between the two workpiece planes 2, 3 can be aligned, which in a measuring device designed as Flandgerät without appropriate tools difficult. The angle measuring device 1 is therefore associated with an alignment stop 13, which determines at least one parallel to the axis of rotation 7 of the mirror 8 stop straight line 14 for the two workpiece levels. According to the embodiment of Figs. 1 to 3, the straightening stopper 13 forms for this purpose a straightedge of two stopper portions 15 on both sides of the plane determined by the rotating mirror 8 level of the deflected laser beam 10, wherein the abutment edges 16 of these abutment portions 15 determine the stop line 14. Accordingly, if the directional ruler formed by the two abutment sections 15 between the two workpiece planes 2, 3 with the abutment edges 16 is placed on the cutting edge 17 between the two workpiece planes 2, 3, the angle measuring device 1 can be aligned with the workpiece planes 2, 3 in a simple manner being held.
    The straightening stop 13 according to FIGS. 1 to 3 is designed as a separate unit from the angle measuring device 1, which has an angular receptacle 18 for the positive fastening of the housing 5. The Flalterung of the housing 5 in the receptacle 18 may preferably be done using permanent magnets, but this is not mandatory. The two abutment portions 15 of the guideline are correspondingly spaced from the angular receptacle 18, so that the laser exit opening 19 of the housing 5 is located at a corresponding distance from the cutting edge 17 between the two workpiece planes 2, 3 in order to achieve good measuring conditions. Thus, even with shorter angle legs of the laser beam 10 perpendicular to both workpiece planes 2, 3 can be radiated, the distance of the axis of rotation 7 of the mirror 8 from the apex axis of the measured angle α can be limited by the level stop 13. For this purpose, the distance of the axis of rotation 7 of the mirror 8 from the stop line 10 to 80 mm, preferably 10 to 40 mm.
    As the embodiment of FIGS. 4 and 5 shows, it is also possible to provide the angle measuring device 1 itself with the straightening stop 13. For this purpose, in turn, two stopper portions 15 are pivotally mounted on the housing 5 about axes 20. This means that the stopper portions 15 can be swung out of a position indicated by dash-dotted lines rest position in the working position shown in solid lines.
    In contrast to the embodiment according to FIGS. 1 to 3, the two stop portions 15 define a stop cylinder 21, because they have a semicircular shape in a plane perpendicular to the apex axis of the angle α. As can be seen in FIG. 5, this stop cylinder 21 produces two stop lines 14 formed by a respective generator of the stop cylinder 21, via which the top stop 13 is supported on the two workpiece planes 2 and 3. Also in this case, when placing the straightening stop 13 on the two work piece levels 2, 3 an accurate measurement alignment of the angle measuring device 1 with respect to the work piece levels 2, 3 ensured.
    According to FIGS. 6 and 7 results in an effect of the embodiment according to FIGS. 1 to 3 corresponding Richtanschlag 13, which forms a continuous straightedge whose abutment edge 16 cooperates with the cutting edge 17 between the workpiece planes 2 and 3, in particular the Fig. 7 can be removed. The straightening stop 13 is mounted in this case about axes 22 pivotally mounted on the housing 5, which extend parallel to the stop line 14 formed by the straightedge.
    权利要求:
    Claims (7)
    [1]
    claims
    1. Apparatus for aligning an angle measuring device (1) with respect to two workpiece planes (2, 3) enclosing an angle to be measured, wherein the angle measuring device (1) comprises a rotating mirror (8) for deflecting a laser beam (10) perpendicular to the axis of rotation (7) of the Mirror (8), characterized in that the angle measuring device (1) is associated with an aiming stop (13) which determines a parallel to the axis of rotation (7) of the mirror (8) stop straight line (14) for both work piece levels (2, 3).
    [2]
    2. Apparatus according to claim 1, characterized in that the straightening stop (13) forms on the inside of a cutting edge (17) between the work piece levels (2, 3) supportable leveling rule.
    [3]
    3. A device according to claim 1, characterized in that the Richtanschlag (13) forms a to the axis of rotation (7) of the mirror (8) parallel stop cylinder (21).
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the straightening stop (13) has two stop portions (15) on both sides of the rotating mirror (8) certain plane of the deflected laser beam (10).
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the straightening stop (13) one of the angle measuring device (1) separate unit with a receptacle (18) for the angle measuring device (1).
    [6]
    6. Device according to one of claims 1 to 3, characterized in that the straightening stop (13) on the housing (5) of the angle measuring device (1) is adjustably mounted between a rest position and a working position.
    [7]
    7. The device according to claim 6, characterized in that the straightening stop (13) in its rest position forms a closure for covering the laser exit opening (19) in the housing (5) of the angle measuring device (1).
    类似技术:
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    同族专利:
    公开号 | 公开日
    AT518637B1|2017-12-15|
    EP3504508B1|2020-04-22|
    EP3504508A1|2019-07-03|
    WO2018035547A1|2018-03-01|
    US20190178637A1|2019-06-13|
    MX2019001823A|2019-06-06|
    CN109642791A|2019-04-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT515279B1|2014-06-12|2015-08-15|Trumpf Maschinen Austria Gmbh|Calibration tool for an angle measuring tool in a bending punch and method for calibrating the angle measuring tool|
    AT515671B1|2014-06-23|2015-11-15|Trumpf Maschinen Austria Gmbh|Bending angle measuring device for a bending press|
    AT515788B1|2014-06-27|2015-12-15|Wögerbauer Johann Ing|Device for determining the angle between two flat workpiece surfaces|
    AT516146B1|2014-09-15|2016-03-15|Trumpf Maschinen Austria Gmbh|Calibration method for a bending machine|
    US3762819A|1971-08-12|1973-10-02|Hughes Aircraft Co|Optical angle measuring system|
    SE458153B|1987-07-16|1989-02-27|Polymetric Ab|OPTICAL ANGLE METHODON|
    DE4312565C2|1993-04-17|2001-12-13|Trumpf Maschinen Austria Gmbh|Bending machine for bending flat workpieces|
    CN1216103A|1996-02-13|1999-05-05|阿玛达美都丽股份有限公司|Angle detection method for bending machine, angle detection apparatus and angle sensor|
    JP2011244134A|2010-05-17|2011-12-01|Canon Inc|Method for adjusting a focusing optical system and image reading apparatus using the method|
    AT512282B1|2012-06-18|2013-07-15|Trumpf Maschinen Austria Gmbh|Bending press with angle detection device|
    CN104406543B|2014-11-19|2018-02-23|湖北三江航天红峰控制有限公司|A kind of the plain shaft parallelism calibration apparatus and method of double optical axis systems|
    WO2016187638A1|2015-05-28|2016-12-01|Keba Ag|Electronic angle measuring device for a bending machine for measuring the bending angle between the limbs of a sheet|CN112304251A|2019-08-02|2021-02-02|三赢科技（深圳）有限公司|Angle detection device and angle detection method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50761/2016A|AT518637B1|2016-08-24|2016-08-24|Device for aligning an angle measuring device|ATA50761/2016A| AT518637B1|2016-08-24|2016-08-24|Device for aligning an angle measuring device|
    US16/326,987| US20190178637A1|2016-08-24|2017-08-02|Device for aligning an angle measuring instrument|
    CN201780050817.1A| CN109642791A|2016-08-24|2017-08-02|For being directed at the device of Angle Measuring Equipment|
    PCT/AT2017/050021| WO2018035547A1|2016-08-24|2017-08-02|Device for aligning an angle measuring instrument|
    MX2019001823A| MX2019001823A|2016-08-24|2017-08-02|Device for aligning an angle measuring instrument.|
    EP17757659.2A| EP3504508B1|2016-08-24|2017-08-02|Device for aligning an angle measuring instrument|
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