Workpiece positioning tool

Abstract

The utility model belongs to the technical field of positioning tools, and particularly relates to a workpiece positioning tool which comprises a mounting plate, a stand column is fixedly connected to the upper surface of the mounting plate, a supporting plate is fixedly connected to the upper surface of the stand column, and a driving mechanism is fixedly connected to the bottom of the supporting plate. A first rectangular hole is formed in the supporting plate, the inner wall of the first rectangular hole is attached to the surface of a driving mechanism, and a rectangular plate is fixedly connected to the upper surface of the driving mechanism. According to the workpiece positioning tool, through cooperation of the supporting plate, the driving mechanism, the first rectangular hole, the rectangular plate, the limiting column, the first rectangular barrel, the second rectangular barrel, the second rectangular hole, the third rectangular hole, a trapezoidal groove, a first hollow block, a spring, a second hollow block and a clamping column, the workpiece positioning tool can complete positioning of a workpiece only through one motor; and therefore, the use difficulty and the later maintenance difficulty of the workpiece positioning tool are effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of positioning tooling technology, specifically relating to a workpiece positioning tooling. Background Technology

[0002] Currently, when inspecting workpieces, the workpiece is typically positioned first using a positioning fixture, and then inspected by a testing device. Most existing workpiece positioning fixtures use motors to drive the movement of clamping plates and blocks. Once the clamping plates and blocks contact the workpiece, they work together to fix and position it. For example, Chinese Patent Publication No. CN219054155U discloses a positioning fixture for workpiece inspection. However, because the positioning fixture requires multiple motors to work together to position the workpiece, the parameters of each motor need to be precisely adjusted before use to ensure the workpiece is fixed in the predetermined position. This makes the positioning fixture cumbersome to use. Furthermore, the complex motor control system also makes the later maintenance of the positioning fixture difficult. Utility Model Content

[0003] The purpose of this utility model is to provide a workpiece positioning fixture, which solves the problem that the positioning fixture requires multiple motors to work together when positioning the workpiece, and therefore requires precise adjustment of the parameters of each motor before use to ensure that the workpiece is fixed in the predetermined position. This makes the positioning fixture more troublesome to use, and the complex motor control system also makes the later maintenance of the positioning fixture more difficult.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A workpiece positioning fixture includes a mounting plate. A column is fixedly connected to the upper surface of the mounting plate, and a support plate is fixedly connected to the upper surface of the column. A driving mechanism is fixedly connected to the bottom of the support plate. A first rectangular hole is formed inside the support plate, and the inner wall of the first rectangular hole is in contact with the surface of the driving mechanism. A rectangular plate is fixedly connected to the upper surface of the driving mechanism, and the bottom of the rectangular plate is in contact with the upper surface of the support plate. A limit post is fixedly connected to the upper surface of the rectangular plate. A first rectangular cylinder is attached to the bottom of the limit post, the surface of the rectangular plate, and the upper surface of the support plate. The front and rear sides of the inner wall of the first rectangular cylinder are fixedly connected to... A second rectangular tube is connected to the first rectangular tube. The second rectangular tube has second rectangular holes on both its left and right sides. The first rectangular tube has a third rectangular hole on its side. The rectangular plate has a trapezoidal groove on its side. A first hollow block is fixedly connected to the inner wall of the second rectangular tube. A spring is fixedly connected to the inner wall of the first hollow block. The front and rear ends of the spring are fixedly connected to second hollow blocks. The inner wall of the second rectangular tube and the upper surface of the support plate are both in contact with the surface of the second hollow block. A clamping post is fixedly connected to the inner wall of the second hollow block. The inner walls of the second rectangular hole, the third rectangular hole, and the trapezoidal groove are all in contact with the surface of the clamping post.

[0006] The present invention is further configured such that the driving mechanism includes a motor, a first threaded post, a second threaded post, a threaded cylinder, and a connecting block. The upper surface of the motor is fixedly connected to the bottom of the support plate. The output end of the motor is fixedly connected to the left end of the first threaded post via a coupling. The right end of the first threaded post is fixedly connected to the left end of the second threaded post. The surfaces of the first and second threaded posts are both threadedly connected to the inner wall of the threaded cylinder. The surface of the threaded cylinder is fixedly connected to the inner wall of the connecting block. The surface of the connecting block is fitted against the inner wall of the first rectangular hole. The upper surface of the connecting block is fixedly connected to the bottom of the rectangular plate.

[0007] The present invention is further configured such that a U-shaped plate is fixedly connected to the inner wall of the first rectangular tube, and an L-shaped column is fitted to both the inner wall of the U-shaped plate and the inner wall of the first rectangular tube. An auxiliary block is fixedly connected to the bottom of the L-shaped column, and the side surface of the first rectangular tube and the upper surface of the support plate are fitted to the surface of the auxiliary block.

[0008] The present invention is further configured such that a fourth rectangular hole is provided on the upper surface of the pallet, a guide post is fitted to the inner wall of the fourth rectangular hole, the upper surface of the guide post is fixedly connected to the bottom of the rectangular plate, a limit ring is fixedly connected to the surface of the guide post, and the upper surface of the limit ring is fitted to the bottom of the pallet.

[0009] The present invention is further configured such that a bearing is fixedly connected to the surface of the second threaded column, and positioning blocks are fixedly connected to the outer ring of the bearing and the upper surface of the support plate.

[0010] The present invention is further configured such that the height of the auxiliary block is greater than the height of the first rectangular tube, and the auxiliary block is located between the front and rear clamping columns.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This utility model discloses a workpiece positioning fixture. Through the cooperation of a pallet, a drive mechanism, a first rectangular hole, a rectangular plate, a limiting post, a first rectangular cylinder, a second rectangular cylinder, a second rectangular hole, a third rectangular hole, a trapezoidal groove, a first hollow block, a spring, a second hollow block, and a clamping post, the workpiece positioning fixture can complete the positioning of the workpiece with only one motor, thereby effectively reducing the difficulty of using the workpiece positioning fixture and the difficulty of subsequent maintenance.

[0013] This utility model discloses a workpiece positioning fixture by setting up a U-shaped plate, an L-shaped column, and an auxiliary block. When the L-shaped column is inserted into the U-shaped plate, the auxiliary block can be connected to a first rectangular tube through the cooperation of the L-shaped column and the U-shaped plate. At the same time, by adding auxiliary blocks of different sizes to the first rectangular tube, the center position of the workpiece during positioning can be changed. Thus, through the cooperation of the U-shaped plate, the L-shaped column, and the auxiliary block, the workpiece positioning fixture can adjust the center position of the workpiece according to different detection requirements when positioning the workpiece. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view at point AA;

[0017] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0018] Figure 5 yes Figure 3 Enlarged view at point C;

[0019] Figure 6 This is a top view of the mounting plate in this utility model;

[0020] Figure 7 This is a top view of the pallet in this utility model;

[0021] Figure 8 This is a front view of the drive mechanism in this utility model;

[0022] Figure 9 This is a bottom view of the rectangular plate in this utility model;

[0023] Figure 10 This is a side view of the first rectangular tube in this utility model;

[0024] Figure 11 This is a side view of the second rectangular tube in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Mounting plate; 2. Column; 3. Support plate; 4. Drive mechanism; 41. Motor; 42. First threaded column; 43. Second threaded column; 44. Threaded cylinder; 45. Connecting block; 5. First rectangular hole; 6. Rectangular plate; 7. Limiting column; 8. First rectangular cylinder; 9. Second rectangular cylinder; 10. Second rectangular hole; 11. Third rectangular hole; 12. Trapezoidal groove; 13. First hollow block; 14. Spring; 15. Second hollow block; 16. Clamping column; 17. U-shaped plate; 18. L-shaped column; 19. Auxiliary block; 20. Fourth rectangular hole; 21. Guide column; 22. Limiting ring; 23. Bearing; 24. Positioning block. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1 to 11As shown, a workpiece positioning fixture includes a mounting plate 1. A column 2 is fixedly connected to the upper surface of the mounting plate 1. A support plate 3 is fixedly connected to the upper surface of the column 2. A drive mechanism 4 is fixedly connected to the bottom of the support plate 3. A first rectangular hole 5 is opened inside the support plate 3. The inner wall of the first rectangular hole 5 is in contact with the surface of the drive mechanism 4. A rectangular plate 6 is fixedly connected to the upper surface of the drive mechanism 4. The bottom of the rectangular plate 6 is in contact with the upper surface of the support plate 3. A limit post 7 is fixedly connected to the upper surface of the rectangular plate 6. A first rectangular tube 8 is in contact with the bottom of the limit post 7, the surface of the rectangular plate 6, and the upper surface of the support plate 3. Second rectangular tubes are fixedly connected to the front and rear sides of the inner wall of the first rectangular tube 8. 9. The second rectangular tube 9 has a second rectangular hole 10 on both the left and right sides. The first rectangular tube 8 has a third rectangular hole 11 on its side. The rectangular plate 6 has a trapezoidal groove 12 on its side. The inner wall of the second rectangular tube 9 is fixedly connected to a first hollow block 13. The inner wall of the first hollow block 13 is fixedly connected to a spring 14. The front and rear ends of the spring 14 are fixedly connected to second hollow blocks 15. The inner wall of the second rectangular tube 9 and the upper surface of the support plate 3 are both in contact with the surface of the second hollow block 15. The inner wall of the second hollow block 15 is fixedly connected to a clamping post 16. The inner walls of the second rectangular hole 10, the third rectangular hole 11, and the trapezoidal groove 12 are all in contact with the surface of the clamping post 16.

[0030] The drive mechanism 4 includes a motor 41, a first threaded post 42, a second threaded post 43, a threaded cylinder 44, and a connecting block 45. The upper surface of the motor 41 is fixedly connected to the bottom of the support plate 3. The output end of the motor 41 is fixedly connected to the left end of the first threaded post 42 via a coupling. The right end of the first threaded post 42 is fixedly connected to the left end of the second threaded post 43. The surfaces of the first threaded post 42 and the second threaded post 43 are both threadedly connected to the inner wall of the threaded cylinder 44. The surface of the threaded cylinder 44 is fixedly connected to the inner wall of the connecting block 45. The surface of the connecting block 45 is in contact with the inner wall of the first rectangular hole 5. The upper surface of the connecting block 45 is fixedly connected to the bottom of the rectangular plate 6. A bearing 23 is fixedly connected to the surface of the second threaded post 43. A positioning block 24 is fixedly connected to the outer ring of the bearing 23 and the upper surface of the support plate 3.

[0031] A fourth rectangular hole 20 is provided on the upper surface of the tray 3. A guide post 21 is fitted to the inner wall of the fourth rectangular hole 20. The upper surface of the guide post 21 is fixedly connected to the bottom of the rectangular plate 6. A limit ring 22 is fixedly connected to the surface of the guide post 21. The upper surface of the limit ring 22 is fitted to the bottom of the tray 3.

[0032] It should be noted that, through the cooperation of the connecting block 45 and the first rectangular hole 5, the threaded cylinder 44 will not rotate with the first threaded post 42 and the second threaded post 43 when they rotate. At the same time, since the threads of the first threaded post 42 and the second threaded post 43 are opposite, when the motor 41 drives the first threaded post 42 and the second threaded post 43 to rotate, the distance between the two connecting blocks 45 on the left and right can be changed through the cooperation of the first threaded post 42, the second threaded post 43 and the threaded cylinder 44.

[0033] Through the cooperation of the second hollow block 15 and the second rectangular tube 9, the clamping column 16 can only move back and forth within the second rectangular hole 10 and the third rectangular hole 11. The spring 14 keeps the clamping column 16 in close contact with the trapezoidal groove 12. When the side of the first rectangular tube 8 contacts the workpiece, and the distance between the two connecting blocks 45 on the left and right continues to decrease, the inclined surface on the trapezoidal groove 12 can reduce the distance between the two clamping columns 16. When the two clamping columns 16 clamp the workpiece, the workpiece can be positioned by the two clamping columns 16 and the two first rectangular tubes 8. When the distance between the two connecting blocks 45 on the left and right increases, the pushing force of the spring 14 on the second hollow block 15 can automatically increase the distance between the two clamping columns 16.

[0034] The rectangular plate 6 can only move left and right on the support plate 3 through the cooperation of the guide post 21, the limiting ring 22 and the fourth rectangular hole 20. At the same time, the right end of the second threaded post 43 can be positioned through the cooperation of the bearing 23 and the positioning block 24.

[0035] like Figures 1 to 4 As shown, a U-shaped plate 17 is fixedly connected to the inner wall of the first rectangular tube 8. An L-shaped column 18 is attached to both the inner wall of the U-shaped plate 17 and the inner wall of the first rectangular tube 8. An auxiliary block 19 is fixedly connected to the bottom of the L-shaped column 18. The side of the first rectangular tube 8 and the upper surface of the support plate 3 are attached to the surface of the auxiliary block 19.

[0036] The height of the auxiliary block 19 is greater than the height of the first rectangular tube 8, and the auxiliary block 19 is located between the front and rear clamping posts 16.

[0037] It should be noted that when the L-shaped column 18 is inserted into the U-shaped plate 17, the auxiliary block 19 can be connected to the first rectangular tube 8 through the cooperation of the L-shaped column 18 and the U-shaped plate 17. At the same time, by adding auxiliary blocks 19 of different sizes to the first rectangular tube 8, the center position of the workpiece during positioning can be changed. Thus, through the cooperation of the U-shaped plate 17, the L-shaped column 18 and the auxiliary block 19, the center position of the workpiece can be adjusted according to different detection requirements when the workpiece positioning fixture is positioning the workpiece.

[0038] The working principle of this utility model is as follows: First, the workpiece is placed on the pallet 3. Then, the first threaded post 42 and the second threaded post 43 are driven to rotate by the motor 41. Through the cooperation of the first threaded post 42, the second threaded post 43 and the threaded cylinder 44, the distance between the two connecting blocks 45 on the left and right is reduced. When the side of the first rectangular cylinder 8 contacts the workpiece, the distance between the two connecting blocks 45 on the left and right is further reduced by the drive mechanism 4. Through the inclined surface on the trapezoidal groove 12, the distance between the two clamping posts 16 on the front and rear is reduced. When the clamping post 16 contacts the surface of the workpiece, the motor 41 stops driving the first threaded post 42 and the second threaded post 43 to rotate. At this time, the workpiece on the pallet 3 can be positioned by the cooperation of the first rectangular cylinder 8 and the clamping post 16.

[0039] After the workpiece inspection is completed, the first threaded post 42 and the second threaded post 43 are rotated by the motor 41. Through the cooperation of the first threaded post 42, the second threaded post 43 and the threaded cylinder 44, the distance between the two connecting blocks 45 on the left and right increases. At this time, the pushing force of the spring 14 on the second hollow block 15 can automatically increase the distance between the two clamping posts 16 in the front and rear. At the same time, the first rectangular cylinder 8 is separated from the workpiece by moving the connecting block 45. After the first rectangular cylinder 8 and the clamping post 16 are separated from the workpiece, the workpiece can be directly taken away from the pallet 3.

[0040] When positioning a workpiece, if it is necessary to change the center position of the workpiece during positioning, first insert the L-shaped column 18 on the auxiliary block 19 into the U-shaped plate 17, and then connect the auxiliary block 19 to the first rectangular tube 8 through the cooperation of the L-shaped column 18 and the U-shaped plate 17. Then, the center position of the workpiece during positioning can be changed through the auxiliary block 19 on the first rectangular tube 8.

[0041] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A workpiece positioning fixture, characterized by: The utility model provides a kind of installation plate, the upper surface of the installation plate (1) is fixedly connected with stand (2), the upper surface of the stand (2) is fixedly connected with supporting plate (3), the bottom of the supporting plate (3) is fixedly connected with drive mechanism (4), the inside of the supporting plate (3) is equipped with first rectangular hole (5), the inner wall of the first rectangular hole (5) is attached with the surface of drive mechanism (4), the upper surface of the drive mechanism (4) is fixedly connected with rectangular plate (6), the bottom of the rectangular plate (6) is attached with the upper surface of supporting plate (3), the upper surface of the rectangular plate (6) is fixedly connected with limit post (7), the bottom of the limit post (7), the surface of rectangular plate (6) and the upper surface of supporting plate (3) are all attached with first rectangular cylinder (8), the front and back of the inner wall of first rectangular cylinder (8) are fixedly connected with second rectangular cylinder (9), the left and right of the second rectangular cylinder (9) are equipped with second rectangular hole (10), the side of the first rectangular cylinder (8) is equipped with third rectangular hole (11), the side of the rectangular plate (6) is equipped with trapezoidal groove (12), the inner wall of the second rectangular cylinder (9) is fixedly connected with first hollow block (13), the inner wall of the first hollow block (13) is fixedly connected with spring (14), the front and back of the spring (14) are fixedly connected with second hollow block (15), the inner wall of the second rectangular cylinder (9) and the upper surface of supporting plate (3) are all attached with the surface of second hollow block (15), the inner wall of the second hollow block (15) is fixedly connected with clamping post (16), the inner wall of the second rectangular hole (10), the inner wall of third rectangular hole (11) and the inner wall of trapezoidal groove (12) are all attached with the surface of clamping post (16).

2. The workpiece positioning fixture of claim 1, wherein: The drive mechanism (4) includes motor (41), first threaded column (42), second threaded column (43), threaded cylinder (44) and connecting block (45), the upper surface of the motor (41) is fixedly connected with the bottom of the supporting plate (3), the output end of the motor (41) is fixedly connected with the left end of the first threaded column (42) through shaft coupling, the right end of the first threaded column (42) is fixedly connected with the left end of the second threaded column (43), the surface of the first threaded column (42) and the surface of the second threaded column (43) are all threadedly connected with the inner wall of the threaded cylinder (44), the surface of the threaded cylinder (44) is fixedly connected with the inner wall of the connecting block (45), the surface of the connecting block (45) is attached with the inner wall of the first rectangular hole (5), the upper surface of the connecting block (45) is fixedly connected with the bottom of the rectangular plate (6).

3. The workpiece positioning fixture of claim 1, wherein: The inner wall of the first rectangular cylinder (8) is fixedly connected with U-shaped plate (17), the inner wall of the U-shaped plate (17) and the inner wall of the first rectangular cylinder (8) are all attached with L-shaped post (18), the bottom of the L-shaped post (18) is fixedly connected with auxiliary block (19), the side of the first rectangular cylinder (8) and the upper surface of the supporting plate (3) are all attached with the surface of auxiliary block (19).

4. The workpiece positioning fixture of claim 1, wherein: The fourth rectangular hole (20) is arranged on the upper surface of the supporting plate (3), and a guide column (21) is attached to the inner wall of the fourth rectangular hole (20); the upper surface of the guide column (21) is fixedly connected with the bottom of the rectangular plate (6); a limiting ring (22) is fixedly connected to the surface of the guide column (21); and the upper surface of the limiting ring (22) is attached to the bottom of the supporting plate (3).

5. The workpiece positioning fixture of claim 2, wherein: A bearing (23) is fixedly connected to the surface of the second threaded column (43); the outer ring of the bearing (23) and the upper surface of the supporting plate (3) are both fixedly connected with a positioning block (24).

6. The workpiece positioning fixture of claim 4, wherein: The height of the auxiliary block (19) is greater than the height of the first rectangular cylinder (8), and the auxiliary block (19) is located between the front and rear clamping columns (16).

Images