CN220490379U - Detection tool for cam divider - Google Patents
Detection tool for cam divider Download PDFInfo
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- CN220490379U CN220490379U CN202322132721.5U CN202322132721U CN220490379U CN 220490379 U CN220490379 U CN 220490379U CN 202322132721 U CN202322132721 U CN 202322132721U CN 220490379 U CN220490379 U CN 220490379U
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- cam divider
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- light emitter
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 238000003860 storage Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 4
- 230000002950 deficient Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a detection tool for a cam divider, which comprises: a base connected with an adjusting bracket, the adjusting bracket having a plurality of degrees of freedom, the adjusting bracket being connected with a detection device, the detection device comprising a vision system and a light emitter; and the bottom plate is positioned beside the base, and the light emitter emits a cursor towards the direction of the bottom plate. The position of the detection equipment is adjusted through the adjusting support, so that a cursor emitted by the light emitter can be aligned with a zero scale on the cam divider, then the cam divider is driven to enter a working state, in the process, a rotating flange of the cam divider intermittently rotates with fixed graduations, a vision system collects position images between the cursor and a reference system and performs digital processing, processed data are compared with preset data, a detection result is obtained through analysis, processing and judgment, and a manufacturer can screen out defective products according to the detection result.
Description
Technical Field
The utility model relates to the technical field of precision equipment, in particular to a detection tool for a cam divider.
Background
The cam divider is a high-precision slewing device, and is particularly important under the current requirement of automation.
In industrial production, the input shaft of the cam divider is driven by the gear motor, and the output shaft of the cam divider can intermittently rotate with fixed indexing, for example, for a cam divider with a positioning division equal to 08, the theoretical single rotation angle of the output shaft is 360 °/8=45°, i.e. one revolution is completed after 8 intermittent rotations of the output shaft.
Along with the sudden rapid progress of industry, the automatic production of various products requires higher production efficiency and higher repeated positioning precision, so the repeated positioning precision of the cam divider is very important, and if the repeated positioning is deviated, the errors which cannot be eliminated are accumulated for an automatic production line, and the process of the automatic production is seriously influenced. In order to detect the repeated positioning accuracy of the cam divider, it is necessary to develop a corresponding detection tool.
Disclosure of Invention
The utility model aims to provide a detection tool for a cam divider, which can accurately detect the repeated positioning precision of the cam divider.
According to an embodiment of the first aspect of the present utility model, a detection tool for a cam divider includes:
a base connected with an adjusting bracket, the adjusting bracket having a plurality of degrees of freedom, the adjusting bracket being connected with a detection device, the detection device comprising a vision system and a light emitter;
the base plate is positioned beside the base plate, the base plate is used for placing the cam divider, the light emitter emits a cursor towards the direction of the base plate, the cursor can be aligned to a reference frame on the cam divider, and the vision system is used for collecting position images between the cursor and the reference frame and performing digital processing.
The detection tool for the cam divider provided by the embodiment of the utility model has at least the following beneficial effects: when the repeated positioning precision of the cam divider is required to be detected, the cam divider is fixedly arranged on the bottom plate, so that the rotating flange of the cam divider can face the detection equipment, as the existing rotating flange is generally provided with zero-point scales, the zero-point scales can be regarded as a reference system of the cam divider, then the position of the detection equipment is adjusted through the adjusting support, a cursor emitted by the light emitter can be aligned with the zero-point scales on the rotating flange, the zero-point calibration of the rotating flange is completed, the cam divider is driven to enter a working state, in the process, the rotating flange is intermittently rotated in a fixed indexing manner, the vision system collects position images between the cursor and the reference system and performs digital processing, processed data are compared with preset data, a detection result is obtained through analysis, processing and judgment, and a manufacturer can screen out defective products according to the detection result.
According to some embodiments of the utility model, since the zero point scale on the rotating flange is a straight line, the shape of the cursor of the light emitter on the projection surface is a continuous straight line or a dot-like straight line in order to better align the zero point scale.
According to some embodiments of the utility model, the vision system comprises a camera, an image acquisition card and an image processor, wherein the camera has a shooting direction facing the bottom plate, the image acquisition card is storage hardware of the camera, and the image processor performs image processing according to data of the image acquisition card.
According to some embodiments of the utility model, the detection tool further comprises a display, and the vision system is transmitted to the display. Besides displaying the detection data, the display can also display the alignment of the cursor and the zero point scale in an enlarged mode, so that the operation of staff is facilitated.
According to some embodiments of the utility model, the adjustment bracket has freedom to move arbitrarily along the XY plane to meet the alignment of the cursor with the zero point scale.
According to some embodiments of the utility model, in order to avoid the cam divider from changing in position during operation, which in turn causes deviation of the detection result, a positioning mechanism for fixing the cam divider is provided on the base plate.
According to some embodiments of the utility model, the positioning mechanism is provided with at least two locking blocks sliding along a straight line, and all the locking blocks jointly define a locking space with adjustable area. When the position of the cam divider needs to be fixed, all the locking blocks are abutted and locked towards the direction of the cam divider, so that the cam divider is limited in the locking space.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic perspective view of a detection tool according to an embodiment of the present utility model.
In the accompanying drawings: 100-base, 200-adjusting bracket, 300-check out test set, 400-bottom plate, 500-cam divider, 510-force input axle, 520-rotary flange, 521-zero scale, 410-positioning mechanism, 411-latch segment, 412-spout, 413-screw handle, 210-fine tuning base, 220-bracing piece, 230-expansion bracket, 231-mount, 320-illuminator, 311-camera, 312-image acquisition card, 600-display.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
As shown in fig. 1, a detection tool for a cam divider according to an embodiment of the first aspect of the present utility model includes a base 100, an adjusting bracket 200, a detection device 300, and a bottom plate 400, wherein the bottom plate 400 is located at a side of the base 100. The base plate 400 is used for placing the cam divider 500, the cam divider 500 is in the prior art, the input shaft 510 of the cam divider 500 is connected with a gear motor (not shown in the drawing), and is driven by the gear motor, once the gear motor drives the input shaft 510 to rotate, the indexing cam connected with the input shaft 510 rotates along with the rotation of the input shaft, and the indexing cam is provided with a taper support rib, so that the indexing cam can drive the cam roller of the output turret to make linear contact along the taper support rib. In order to maintain the continuity of force transmission, at least two cam rollers are in contact with the tapered support ribs at the same time. Under the rotation of the indexing cam, the cam roller rotates the output turret according to a given displacement curve, rolls along the inclined surface of the rib at the same time, then drives the output turret to rotate for a certain indexing, and finally achieves the indexing rotation of the output shaft. The output shaft is in transmission connection with a rotary flange 520 through a transmission shaft, and the rotary flange 520 is generally provided with a zero scale 521 at a zero position thereof so as to facilitate positioning and assembly of the rotary flange 520 and an automatic production line.
In order to avoid the cam splitter 500 from changing its position during operation, which in turn causes the zero point scale 521 to deviate from its position, the base plate 400 is provided with a positioning mechanism 410 for fixing the cam splitter 500. Specifically, the positioning mechanism 410 is provided with four locking blocks 411 sliding along a straight line, wherein a connecting line between two locking blocks 411 and a connecting line between the other two locking blocks 411 are perpendicular to each other, correspondingly, the bottom plate 400 is provided with a sliding chute 412 for the locking blocks 411 to slide, each locking block 411 is connected with a nut block, and each nut block is connected with a screw handle 413 in a threaded manner, so that all the locking blocks 411 can jointly define an area-adjustable locking space. When it is necessary to fix the position of the cam splitter 500, all the locking pieces 411 are abutted and locked toward the cam splitter 500 so that the cam splitter 500 is defined in the locking space.
It should be understood that the specific structure of the positioning mechanism 410 is not limited by the present utility model, so long as the positioning mechanism 410 can fix the cam splitter 500, and no matter what structure the positioning mechanism 410 is, the present utility model is within the scope of protection.
In addition, the adjusting bracket 200 includes a fine adjustment base 210, a support bar 220, and a telescopic bracket 230, wherein the fine adjustment base 210 is connected to the base 100, the fine adjustment base 210 can be adjusted in position along the XY plane, and a user can fine adjust the relative position between the fine adjustment base 210 and the base 100 through a knob on the fine adjustment base 210. The fine tuning base 210 is connected with a supporting rod 220 extending upwards, the telescopic frame 230 is rotatably connected to the supporting rod 220 around the Z axis, the telescopic frame 230 is provided with a telescopic mounting portion 231, and the detecting device 300 is mounted on the mounting portion 231. Since the telescopic frame 230 is connected to the support bar 220 through the hole, when the hole of the telescopic frame 230 is loosened, the telescopic frame 230 can move along the Z-axis and rotate around the Z-axis, and when the hole of the telescopic frame 230 is tightened, the telescopic frame 230 can be fixedly connected to the support bar 220.
In view of this, the adjustment stand 200 has the degrees of freedom of XYZ three axes and the degrees of freedom of rotation about the Z axis, and thus the detection device 300 connected thereto also has the degrees of freedom described above. It should be understood that the specific structure of the adjusting bracket 200 is not limited, and it is within the scope of the present utility model to adjust the position of the detecting device 300 by the adjusting bracket 200 no matter what structure the adjusting bracket 200 is.
In addition, the detection device 300 includes a vision system and a light emitter 320, the vision system mainly includes a camera 311, an image acquisition card 312 and an image processor (not shown in the drawing), the camera 311 is optionally a CCD camera, and since the position of the detection device 300 is adjustable, the field of view of the camera 311 can be adjusted to be opposite to the rotating flange 520 of the cam splitter 500, the image acquisition card 312 is a storage hardware of the camera 311, and the image processor performs image processing according to the data of the image acquisition card 312. Since the image capture card 312 and the image processor can both use the existing technology, the structure and operation of the present utility model will not be described in detail.
The light emitter 320 may be a laser generator, which is connected to the outside of the camera 311, and the light emitter 320 emits a cursor toward the rotating flange 520 of the cam splitter 500. Since the position of the detecting device 300 is adjustable, the cursor emitted by the light emitter 320 can be adjusted to align with the zero scale 521 on the rotating flange 520, so as to complete the zero calibration of the rotating flange 520.
When the repeated positioning accuracy of the cam splitter 500 needs to be detected, the cam splitter 500 is fixedly placed on the base plate 400 first, so that the rotating flange 520 of the cam splitter 500 can face the detection device 300; subsequently, the position of the detecting device 300 is adjusted by the adjusting bracket 200, so that the cursor emitted by the light emitter 320 can be aligned with the zero point scale 521 on the rotating flange 520, and the zero point calibration of the rotating flange 520 is completed; and then, starting a gear motor to drive the cam divider 500 to enter a working state, wherein in the process, the rotary flange 520 intermittently rotates with fixed graduation, the vision system collects position images between the cursor and the reference system and performs digital processing, the processed data are compared with preset data, a detection result is obtained through analysis, processing and judgment, and a manufacturer can screen out defective products according to the detection result.
With the above arrangement, the detection process of the vision system can be roughly divided into the following steps:
s10, before the cam divider 500 is started, the camera 311 shoots a full picture.
S20. each time the rotating flange 520 of the cam splitter 500 rotates one index, the camera 311 takes a full frame.
S30, after the rotary flange 520 rotates for a certain number of times, the operation of the cam divider 500 is suspended, and the image processor performs analysis, processing and judgment according to the data of the image acquisition card 312.
The number of the detectable indexes is two, one is the coincidence degree between the cursor and the zero point scale 521 after the rotary flange 520 rotates once; and whether the rotation angle reaches the standard or not every time the rotation flange 520 rotates one index. Only when the two indexes are within the tolerance range, the cam divider 500 can mark as good, otherwise, the cam divider is marked as bad.
In some embodiments of the present utility model, since the zero point scale 521 on the rotating flange 520 is a straight line, the cursor of the light emitter 320 has a shape of a continuous straight line or a dot-like straight line on the projection surface in order to better align the zero point scale 521.
In some embodiments of the utility model, the inspection tool further comprises a display 600, and the vision system is transmitted to the display 600. The display 600 can display the alignment of the cursor and the zero point scale 521 in an enlarged manner in addition to the detection data, so as to facilitate the operation of the worker.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (7)
1. A detect frock for cam divider, its characterized in that includes:
a base (100) to which an adjustment bracket (200) is connected, the adjustment bracket (200) having a plurality of degrees of freedom, the adjustment bracket (200) being connected to a detection device (300), the detection device (300) comprising a vision system and a light emitter (320);
-a base plate (400) located beside the base plate (100), the base plate (400) being adapted to house a cam divider (500), the light emitter (320) emitting a cursor in the direction of the base plate (400), the cursor being alignable to a frame of reference on the cam divider (500), the vision system being adapted to collect and digitize images of the position between the cursor and the frame of reference.
2. The detection tool for cam dividers of claim 1, wherein: the shape of the cursor of the light emitter (320) on the projection surface is a continuous straight line or a punctiform straight line.
3. The detection tool for cam dividers of claim 1, wherein: the vision system comprises a camera (311), an image acquisition card (312) and an image processor, wherein the camera (311) is provided with a shooting direction facing the bottom plate (400), the image acquisition card (312) is storage hardware of the camera (311), and the image processor performs image processing according to data of the image acquisition card (312).
4. A detection tool for a cam divider according to claim 1 or 3, characterized in that: also included is a display (600), the vision system being transmitted to the display (600).
5. The detection tool for cam dividers of claim 1, wherein: the adjustment bracket (200) has a degree of freedom to move arbitrarily along the XY plane.
6. The detection tool for cam dividers of claim 1, wherein: the base plate (400) is provided with a positioning mechanism (410) for fixing the cam divider (500).
7. The detection tool for cam dividers of claim 6, wherein: the positioning mechanism (410) is provided with at least two locking blocks (411) sliding along a straight line, and all the locking blocks (411) jointly define a locking space with adjustable area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322132721.5U CN220490379U (en) | 2023-08-08 | 2023-08-08 | Detection tool for cam divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322132721.5U CN220490379U (en) | 2023-08-08 | 2023-08-08 | Detection tool for cam divider |
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| CN220490379U true CN220490379U (en) | 2024-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118392089A (en) * | 2024-06-24 | 2024-07-26 | 昆山野人精密机械自动化有限公司 | Cam divider precision inspection device |
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2023
- 2023-08-08 CN CN202322132721.5U patent/CN220490379U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118392089A (en) * | 2024-06-24 | 2024-07-26 | 昆山野人精密机械自动化有限公司 | Cam divider precision inspection device |
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