Measuring clamp for cylindrical workpiece

By designing measurement fixtures for cylindrical workpieces, including installation platforms, V-shaped brackets, stop devices and drive devices, the error and inefficiency caused by manual picking points are solved, and an efficient and automated measurement process is achieved.

CN222903741UActive Publication Date: 2025-05-27SIEMENS STANDARD MOTORS LTD
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Patent Information

Application Number
CN202421669912.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-15
Publication Date
2025-05-27
Estimated Expiration
2034-07-15

AI Technical Summary

Technical Problem

When measuring the size of cylindrical workpieces such as motor components, manual picking points leads to errors, and automatic programming measurement cannot be achieved, which is inefficient.

Method used

A measuring fixture for cylindrical workpieces is designed, including a mounting platform, a V-shaped bracket, a stop device and a drive device. The workpiece is pushed through the drive device to fix its axial and radial coordinates, making it easy to automatically program measurements.

Benefits of technology

It effectively reduces the error introduced by manual collection points, improves measurement efficiency, reduces the labor intensity of operators, and realizes automated measurement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a measuring clamp for a cylindrical workpiece. The measuring clamp comprises a mounting platform; the V-shaped bracket is arranged on the mounting platform and is used for supporting a workpiece, so that the workpiece has a degree of freedom in a first direction; the stop device is arranged on the mounting platform and is used for limiting the movement of the workpiece in the first direction; and the driving device is arranged on the mounting platform, is separated from the stopping device through the V-shaped bracket, and is used for pushing the workpiece to move towards the stopping device in the first direction until the workpiece is propped against the stopping device. The measuring clamp provided by the utility model is convenient for assisting three-coordinate programming automatic measurement, and improves the measuring efficiency and the accuracy of a measuring result.
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Description

Technical Field

[0001] The utility model relates to a measuring fixture for cylindrical workpieces. Background Art

[0002] In order to measure the dimensions of components such as motors, coordinate measuring machines have been used to manually collect points so far, especially to measure the geometric dimensions of components by manually collecting points. However, the measurement results generated thereby have certain errors because the manual point collection pressure is uncontrollable. At the same time, it is impossible to use automatic programming to collect points to execute an automatic measurement program, and the efficiency of this measurement method is low. Summary of the Utility Model

[0003] In view of this, an embodiment of the utility model provides a new measuring fixture for cylindrical workpieces. Using this fixture can advantageously solve the problems of errors and low efficiency caused by manual point collection, and at the same time can also relieve the labor intensity of operators.

[0004] According to a preferred embodiment of the utility model, there is provided a measuring fixture for cylindrical workpieces, comprising: a mounting platform; a V-shaped bracket provided on the mounting platform for supporting the workpiece so that the workpiece has a degree of freedom in a first direction; a stop device provided on the mounting platform for restricting the movement of the workpiece in the first direction; and a driving device provided on the mounting platform, spaced apart from the stop device via the V-shaped bracket, for pushing the workpiece in the first direction towards the stop device until the workpiece abuts against the stop device. The measuring fixture according to the utility model can slowly push the workpiece close to the stop device to ensure that the axial and radial coordinates of the workpiece are fixed, facilitating subsequent automatic programming measurement.

[0005] According to an exemplary embodiment of the utility model, the driving device includes a movable component provided on the mounting platform, and the movable component can move in the first direction, abut against the workpiece and push the workpiece. Thus, before pushing the workpiece, depending on the size of the workpiece, the measuring fixture can move from a distance to near the workpiece and then abut against the workpiece, so that the measuring fixture can be adapted to workpieces of various different sizes.

[0006] According to an exemplary embodiment of the present utility model, the movable assembly includes: a movable base, the first end of the movable base is supported on the installation platform; a driving support, fixed on the second end of the movable base; a push rod, supported on the driving support; an operating rod, the first end of the operating rod is the operating end, and the second end of the operating rod is a fixed pivot end fixedly pivotally connected to the driving support; and a connecting rod, the first end of the connecting rod is connected to the middle of the operating rod through a first movable pivot point, and the second end of the connecting rod is connected to the first end of the push rod through a second movable pivot point. Each part of the movable assembly ensures the stable movement of the driving device on the installation platform, thereby applying a stable driving force to the workpiece and avoiding accidental damage to the workpiece.

[0007] According to an exemplary embodiment of the present utility model, the movable assembly further includes: a jacking rod, arranged on the second end of the push rod, the jacking rod includes a vertical portion extending in a second direction perpendicular to the first direction and a horizontal portion extending from the vertical portion in the first direction, and the vertical portion can move relative to the push rod in the second direction; and a locking member, arranged on the second end of the push rod for locking the vertical portion on the push rod. Depending on the size of the workpiece, the movable assembly can adapt to the height or radial length of the workpiece after moving the jacking rod, so that the measuring fixture is applicable to a variety of different types of workpieces to be measured.

[0008] According to an exemplary embodiment of the present utility model, the operating rod is bent, and the first movable pivot point is located at the bent portion of the operating rod. Thus, the movable assembly can advantageously transmit the external driving force effectively to the push rod, and then promote the push rod to move stably towards the workpiece.

[0009] According to an exemplary embodiment of the present utility model, the driving support includes a guide sleeve, and the push rod passes through the guide sleeve and is supported inside the guide sleeve. Thus, with the help of an external driving force, the push rod can move slowly inside the guide sleeve, avoiding moving too fast and causing damage to the workpiece.

[0010] According to an exemplary embodiment of the present utility model, the driving device further includes: a slide rail, fixed on the installation platform, and the movable base is arranged on the slide rail; and a locking assembly, which locks the movable base on the slide rail. Thereby, the operating efficiency of the driving device for moving the workpiece to abut against the stop device is improved.

[0011] According to an exemplary embodiment of the present utility model, the stop device includes: a stop base fixed on the mounting platform; a support body protruding from the stop base; a support rod disposed at an end of the support body and extending towards the V-shaped bracket in a first direction; and a push rod disposed on the support rod, including a vertical portion extending in a second direction perpendicular to the first direction and a horizontal portion extending from the vertical portion in the first direction, wherein the vertical portion is movable relative to the support rod in the second direction. Thus, the stop device of the measuring fixture can also actively adapt to workpieces with different sizes.

[0012] According to an exemplary embodiment of the present utility model, the measuring fixture further includes a workpiece circumferential positioning assembly disposed on the V-shaped bracket for engaging one end thereof with a groove on the surface of the workpiece to prevent the workpiece from rotating circumferentially. Thus, the workpiece placed on the V-shaped bracket cannot rotate randomly, which further ensures the accuracy of subsequent measurement of the workpiece.

[0013] According to an exemplary embodiment of the present utility model, the workpiece circumferential positioning assembly includes a guide sleeve, a spring, and a telescopic rod. The spring is disposed within the guide sleeve, and a first end of the telescopic rod abuts against the spring within the guide sleeve, and a second end of the telescopic rod extends out of the guide sleeve. Thereby, a favorable positioning of the workpiece on the V-shaped bracket is provided in a low-cost manner, ensuring the reliability of the subsequent measurement process.

[0014] According to an exemplary embodiment of the present utility model, the measuring fixture includes at least two V-shaped brackets arranged in sequence in a first direction. Depending on the size of the workpiece disposed on the mounting platform, the measuring fixture adapts to workpieces of different sizes by adjusting the number of V-shaped brackets. Description of the Drawings

[0015] The following will make the above and other features and advantages of the present utility model clearer to those of ordinary skill in the art by describing the preferred embodiments of the present utility model in detail with reference to the drawings, wherein:

[0016] Figure 1 A schematic diagram of a measuring fixture according to an embodiment of the present utility model is shown.

[0017] Figure 2 A schematic diagram of a mounting platform of a measuring fixture according to an embodiment of the present utility model is shown.

[0018] Figure 3 A schematic diagram of a V-shaped bracket of a measuring fixture according to an embodiment of the present utility model is shown.

[0019] Figure 4 A schematic diagram of a slide rail of a measuring fixture according to an embodiment of the present utility model is shown.

[0020] Figure 5The schematic diagram of the movable component of the measuring fixture according to an embodiment of the present invention is shown.

[0021] Figure 6 The schematic diagram of the stop device of the measuring fixture according to an embodiment of the present invention is shown.

[0022] Among them, the reference numerals are as follows:

[0023] 10. Installation platform; 20. V-shaped bracket; 30. Stop device;

[0024] 40. Driving device; 41. Movable component; 411. Movable base;

[0025] 412. Driving support; 413. Push rod; 414. Operating rod;

[0026] 415. Connecting rod; 416. Movable component ejector rod; 417. Locking member;

[0027] 4161. Vertical part of the movable component ejector rod; 4162. Horizontal part of the movable component ejector rod; 4121. Guide sleeve;

[0028] 42. Slide rail; 43. Locking component; 31. Stop base;

[0029] 32. Support body; 33. Support rod; 34. Stop device ejector rod;

[0030] 341. Vertical part of the stop device ejector rod; 342. Horizontal part of the stop device ejector rod; 50. Workpiece circumferential positioning component;

[0031] 51. Positioning component guide sleeve; 52; Positioning component telescopic rod; 421. Slide rail base;

[0032] 422. Sliding surface; 423. Slide rail locking groove; 11. V-shaped bracket installation groove;

[0033] 12. Stop device installation groove; 13. Driving device installation groove. Specific embodiments

[0034] To make the objectives, technical solutions and advantages of the present invention clearer, the following embodiments are given to further elaborate on the present invention in detail.

[0035] Figure 1 The schematic diagram of the measuring fixture according to an embodiment of the present invention is shown. In Figure 1Among them, the measuring fixture according to this embodiment includes a mounting platform 10, a V-shaped bracket 20 arranged on the mounting platform 10, a stop device 30 arranged on the mounting platform 10, and a driving device 40 arranged on the mounting platform 10. The V-shaped bracket 20 is used to support the workpiece so that the workpiece has freedom in the first direction. The stop device 30 is arranged to limit the movement of the workpiece in the first direction. The driving device 40 is spaced apart from the stop device 30 via the V-shaped bracket 20 and is used to push the workpiece to move towards the stop device 30 in the first direction until the workpiece abuts against the stop device 30.

[0036] Figure 2 The schematic diagram of the mounting platform of the measuring fixture according to the embodiment of the present invention is shown. As Figure 2 shown, the mounting platform 10 has a flat mounting surface, on which a V-shaped bracket mounting groove 11 for fixing the V-shaped bracket 20, a stop device mounting groove 12 for fixing the stop device, and a driving device mounting groove 13 for fixing the driving device are provided. In order to fix each component on the mounting surface, for example, the base of the V-shaped bracket is fixed in the V-shaped bracket mounting groove 11 using bolts, the base of the stop device is fixed in the stop device mounting groove 12, and the slide rail of the driving device is fixed in the driving device mounting groove 13. In the V-shaped bracket mounting groove 11, a plurality of mounting holes are provided, and at least two V-shaped brackets are fixed in the mounting groove 11.

[0037] Figure 3 The schematic diagram of the V-shaped bracket of the measuring fixture according to the embodiment of the present invention is shown. In Figure 3 the shown V-shaped bracket 20, a workpiece circumferential positioning component 50 is provided thereon, and one end of the workpiece circumferential positioning component 50 engages with a groove on the surface of the workpiece to prevent the workpiece from rotating circumferentially. As Figure 3 shown, the workpiece circumferential positioning component 50 includes a guide sleeve 51, a spring (not shown), and a telescopic rod 52. The spring is arranged inside the guide sleeve 51, and the first end of the telescopic rod 52 abuts against the spring inside the guide sleeve 51, and the second end of the telescopic rod 52 extends out of the guide sleeve 51.

[0038] Figure 4 The schematic diagram of the slide rail of the measuring fixture according to the embodiment of the present invention is shown. In this embodiment, the slide rail 42 includes a slide rail base 421 fixed on the mounting platform, a sliding surface 422 connected to the movable base of the movable component, and a slide rail locking groove 423 that fixes the movable base on the slide rail 42 and cooperates with the locking component after the movable base moves to an appropriate position.

[0039] Figure 5 The schematic diagram of the movable component of the measuring fixture according to the embodiment of the present invention is shown. In Figure 5In the illustrated embodiment, the movable component 41 is disposed on the mounting platform, and the movable component 41 can move in a first direction, abut against the workpiece and push the workpiece. The movable component 41 includes a movable base 411, a driving support 412, a push rod 413, an operating rod 414, and a connecting rod 415. Specifically, the first end of the movable base 411 is supported on the mounting platform, and the driving support 412 is fixed to the second end of the movable base 411. The push rod 413 is supported on the driving support 412. The first end of the operating rod 414 is set as the operating end, and the second end of the operating rod 414 is set as the fixed pivot end fixedly pivotally connected to the driving support 412. The first end of the connecting rod 415 is connected to the middle of the operating rod 414 through a first movable pivot point, and the second end of the connecting rod 415 is connected to the first end of the push rod 413 through a second movable pivot point. In addition, the movable component 41 further includes a movable component ejector rod 416 and a locking member 417. The movable component ejector rod 416 is disposed on the second end of the push rod 413. The movable component ejector rod 416 includes a vertical portion 4161 extending in a second direction perpendicular to the first direction and a horizontal portion 4162 extending from the vertical portion 4161 in the first direction. The vertical portion 4161 can move relative to the push rod 413 in the second direction. The locking member 417 is disposed on the second end of the push rod 413 for locking the vertical portion 4161 on the push rod 413. In this embodiment, the operating rod 414 is bent, and the first movable pivot point is located at the bent portion of the operating rod 414. Moreover, the driving support 412 includes a guide sleeve 4121, and the push rod passes through the guide sleeve 4121 and is supported within the guide sleeve 4121.

[0040] Figure 6 FIG. shows a schematic view of a stop device of a measuring fixture according to an embodiment of the present invention. In Figure 6 In the illustrated embodiment, the stop device 30 includes a stop base 31, a support body 32, a support rod 33, and a stop device ejector rod 34. The stop base 30 is fixed to the mounting platform. The support body 32 protrudes from the stop base 31. The support rod 33 is disposed at the end of the support body 32 and extends toward the V-shaped bracket in the first direction. The stop device ejector rod 34 is disposed on the support rod 33. The stop device ejector rod 34 includes a vertical portion 341 extending in a second direction perpendicular to the first direction and a horizontal portion 342 extending from the vertical portion in the first direction. The vertical portion 341 of the stop device ejector rod 34 can move relative to the support rod 33 in the second direction, and after the vertical portion 341 of the stop device ejector rod 34 moves to an appropriate position relative to the support rod 33, the vertical portion 341 of the stop device ejector rod 34 can be fixed to the support rod 33 by means of a locking member.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A measuring fixture for a cylindrical workpiece, characterized in that: include: Mounting platform (10); A V-shaped bracket (20), arranged on the mounting platform and used to support the workpiece so that the workpiece has a degree of freedom in a first direction; A stopper (30), arranged on the mounting platform and used to limit the movement of the workpiece in the first direction; as well as A driving device (40) is arranged on the mounting platform and is separated from the stop device (30) via the V-shaped bracket (20). The driving device (40) is used to push the workpiece to move toward the stop device (30) in the first direction until the workpiece abuts against the stop device (30).

2. The measuring fixture according to claim 1, characterized in that: The driving device (40) comprises a movable component (41) arranged on the mounting platform, and the movable component is movable in the first direction, abutting against the workpiece and pushing the workpiece.

3. The measuring fixture according to claim 2, characterized in that: The movable component (41) comprises: A movable base (411), a first end of which is supported on the mounting platform; A driving support (412) fixed on the second end of the movable base; A push rod (413) supported on the driving support; an operating rod (414), wherein a first end of the operating rod is an operating end, and a second end of the operating rod is a fixed pivot end fixedly pivoted to the driving support; and A connecting rod (415), wherein the first end of the connecting rod is connected to the middle part of the operating rod through a first movable pivot point, and the second end of the connecting rod is connected to the first end of the push rod through a second movable pivot point.

4. The measuring fixture according to claim 3, characterized in that: The active component (41) further comprises: a movable assembly push rod (416) disposed on the second end of the push rod, the movable assembly push rod comprising a vertical portion (4161) extending in a second direction perpendicular to the first direction and a horizontal portion (4162) extending from the vertical portion in the first direction, the vertical portion being movable relative to the push rod in the second direction; and A locking member (417) is provided on the second end of the push rod and is used to lock the vertical portion (4161) on the push rod.

5. The measuring fixture according to claim 3, characterized in that: The operating rod (414) is bent, and the first movable pivot point is located at the bending point of the operating rod.

6. The measuring fixture according to claim 3, characterized in that: The driving support (412) comprises a guide sleeve (4121), and the push rod passes through the guide sleeve and is supported in the guide sleeve.

7. The measuring fixture according to claim 3, characterized in that: The driving device (40) further comprises: A slide rail (42) fixed on the mounting platform, the movable base being arranged on the slide rail; and A locking assembly (43) is used to lock the movable base onto the slide rail.

8. The measuring fixture according to claim 1, characterized in that: The stopping device (30) comprises: A stop base (31) fixed on the mounting platform; A support body (32) protrudes from the stop base; a support rod (33) disposed at an end of the support body and extending in the first direction toward the V-shaped bracket; and A stopper rod (34) is arranged on the support rod, comprising a vertical portion (341) extending in a second direction perpendicular to the first direction and a horizontal portion (342) extending from the vertical portion in the first direction, wherein the vertical portion (341) is movable relative to the support rod in the second direction.

9. The measuring fixture according to claim 1, characterized in that: The measuring fixture also includes a workpiece circumferential positioning assembly (50) which is arranged on the V-shaped bracket and is used to engage with a groove on the surface of the workpiece with one end thereof to prevent the workpiece from rotating in the circumferential direction.

10. The measuring fixture according to claim 9, characterized in that: The workpiece circumferential positioning assembly (50) comprises a guide sleeve, a spring and a telescopic rod, wherein the spring is arranged in the guide sleeve, the first end of the telescopic rod abuts against the spring in the guide sleeve, and the second end of the telescopic rod extends from the guide sleeve.

11. The measuring fixture according to claim 1, characterized in that: The measuring fixture comprises at least two V-shaped brackets (20) arranged in sequence in the first direction.