Positioning clamp for sheet metal machining

Abstract

The utility model belongs to sheet metal processing technical field, concretely relates to a positioning fixture for sheet metal machining, the positioning fixture for sheet metal machining, including the bottom plate, the upper surface fixedly connected with stand of bottom plate, the upper surface fixedly connected with support plate of stand, the upper surface fixedly connected with left positioning block of support plate, the upper surface of bottom plate is pasted and is provided with right positioning block. The positioning fixture for sheet metal machining is through the cooperation of right positioning block, circular ring, first bearing, cylinder, square column, U plate, threaded cylinder, adjusting bolt, square hole, spring, second bearing, carousel, steering handle, connecting hole, round plate and connecting column, makes left positioning block and right positioning block after the clamping force that is applied to sheet metal part reaches specified size, connecting column can separate with connecting hole automatically, and make the user unable to continue to rotate adjusting screw through steering handle, and then make the clamping force that left positioning block and right positioning block apply to sheet metal part not too big.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal processing technology, and specifically relates to a positioning fixture for sheet metal processing. Background Technology

[0002] In sheet metal processing, sheet metal parts often need to be positioned and clamped for subsequent processing operations. Existing sheet metal positioning fixtures mostly use screw-driven mechanisms to achieve the clamping function, such as the positioning fixture for sheet metal processing disclosed in Chinese Patent Publication No. CN210451537U. However, during the clamping process, because users find it difficult to accurately judge the clamping force, over-clamping can easily occur, potentially damaging the sheet metal part and affecting the processing quality and yield. Summary of the Invention

[0003] The purpose of this utility model is to provide a positioning fixture for sheet metal processing, which solves the problem that when using existing positioning fixtures to clamp sheet metal parts, users have difficulty accurately judging the magnitude of the clamping force, which can easily lead to over-clamping, resulting in damage to the sheet metal parts and affecting the processing quality and yield of the sheet metal parts.

[0004] The specific technical solution adopted by this utility model is as follows: A positioning fixture for sheet metal processing includes a base plate, a column fixedly connected to the upper surface of the base plate, a support plate fixedly connected to the upper surface of the column, a left positioning block fixedly connected to the upper surface of the support plate, a right positioning block fitted to the upper surface of the base plate, a ring fixedly connected to the right side of the right positioning block, a first bearing fixedly connected to the inner wall of the ring, a cylinder fixedly connected to the inner ring of the first bearing, a square column fixedly connected to the right side of the cylinder, a U-shaped plate fixedly connected to the upper surface of the support plate, and a threaded cylinder fixedly connected to the inner wall of the U-shaped plate. An adjusting screw is threadedly connected to the cylinder. The adjusting screw has a square hole inside, the inner wall of which fits against the surface of the square column. Springs are fixedly connected to the left side of the adjusting screw and the right side of the cylinder. A second bearing is fixedly connected to the surface of the adjusting screw, and a turntable is fixedly connected to the outer ring of the second bearing. A handle is fixedly connected to the right side of the turntable, and a connecting hole is opened inside the turntable. A circular plate is fixedly connected to the surface of the square column, and a connecting post is fixedly connected to the left side of the circular plate. The surface of the connecting post fits against the inner wall of the connecting hole. A rotating block is fixedly connected to the surface of the adjusting screw.

[0005] The present invention is further configured such that a rectangular hole is provided inside the square column, a limiting block is fitted to the inner wall of the rectangular hole, the upper and lower sides of the limiting block are fixedly connected to the inner wall of the square hole, and a vent hole is provided inside the limiting block.

[0006] The present invention is further configured such that the length of the rectangular hole is greater than the length of the limiting block, and the vent hole is located in the middle of the limiting block.

[0007] The present invention is further configured such that a guide groove is provided on the upper surface of the support plate, a guide block is fitted into the inner wall of the guide groove, and the upper surface of the guide block is fixedly connected to the bottom of the right positioning block.

[0008] The present invention is further configured such that a connecting block is fixedly connected to the upper surface of the U-shaped plate, a box body is fixedly connected to the upper surface of the connecting block, an oil injection hole is opened on the upper surface of the box body, a sealing plug is fitted to the inner wall of the oil injection hole, an oil leakage hole is opened at the bottom of the box body, a sponge block is glued to the bottom of the box body, and the bottom of the sponge block is fitted to the surface of the adjusting screw.

[0009] The present invention is further configured such that the sponge block is located directly below the oil leakage hole, there are two sponge blocks, and the threaded cylinder is located between the two sponge blocks.

[0010] The technical effects achieved by this utility model are as follows: This utility model discloses a positioning fixture for sheet metal processing. Through the cooperation of a right positioning block, a ring, a first bearing, a cylinder, a square column, a U-shaped plate, a threaded cylinder, an adjusting bolt, a square hole, a spring, a second bearing, a turntable, a throttle, a connecting hole, a circular plate, and a connecting column, the connecting column automatically separates from the connecting hole after the left and right positioning blocks apply a specified clamping force to the sheet metal part. This prevents the user from continuing to rotate the adjusting screw by turning the throttle, thus ensuring that the clamping force applied by the left and right positioning blocks to the sheet metal part is not excessive and preventing the sheet metal part from being damaged.

[0011] This utility model discloses a positioning fixture for sheet metal processing. Through the cooperation of an oil leakage hole and a sponge block, the lubricating oil inside the box can be automatically and continuously applied to the adjusting screw, thereby ensuring continuous lubrication between the adjusting screw and the threaded cylinder, making the adjusting screw rotate more smoothly. Attached Figure Description

[0012] Figure 1 This is a front view of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a top view of the structure of this utility model; Figure 4 yes Figure 3 Enlarged view at point B in the middle; Figure 5 yes Figure 3 Sectional view at CC; Figure 6 yes Figure 5 Enlarged view at point D; Figure 7 yes Figure 5 Enlarged view at point E in the middle; Figure 8 This is a right view of the cylinder in this utility model; Figure 9 This is a top view of the square column of this utility model; Figure 10 This is a right view of the U-shaped plate in this utility model; Figure 11 This is a left view of the adjusting screw in this utility model; Figure 12 This is a right view of the turntable in this utility model; Figure 13 This is a left view of the disc in this utility model; Figure 14 This is a left view of the box body, sealing plug, and sponge block in this utility model; Figure 15 This is a bottom view of the box body in this utility model; Figure 16 This is a top view of the box body in this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 1. Base plate; 2. Column; 3. Support plate; 4. Left positioning block; 5. Right positioning block; 6. Ring; 7. First bearing; 8. Cylinder; 9. Square column; 10. U-shaped plate; 11. Threaded cylinder; 12. Adjusting screw; 13. Square hole; 14. Spring; 15. Second bearing; 16. Turntable; 17. Rotary handle; 18. Connecting hole; 19. Circular plate; 20. Connecting column; 21. Rotating block; 22. Rectangular hole; 23. Limiting block; 24. Vent hole; 25. Guide groove; 26. Guide block; 27. Connecting block; 28. Box body; 29. ​​Oil injection hole; 30. Sealing plug; 31. Oil leakage hole; 32. Sponge block. Detailed Implementation

[0014] 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.

[0015] 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.

[0016] like Figures 1 to 13As shown, a positioning fixture for sheet metal processing includes a base plate 1, a column 2 fixedly connected to the upper surface of the base plate 1, a support plate 3 fixedly connected to the upper surface of the column 2, a left positioning block 4 fixedly connected to the upper surface of the support plate 3, a right positioning block 5 fitted to the upper surface of the base plate 1, a ring 6 fixedly connected to the right side of the right positioning block 5, a first bearing 7 fixedly connected to the inner wall of the ring 6, a cylinder 8 fixedly connected to the inner ring of the first bearing 7, a square column 9 fixedly connected to the right side of the cylinder 8, a U-shaped plate 10 fixedly connected to the upper surface of the support plate 3, a threaded cylinder 11 fixedly connected to the inner wall of the U-shaped plate 10, and an adjusting screw threadedly connected to the inner wall of the threaded cylinder 11. The adjusting screw 12 has a square hole 13 inside, and the inner wall of the square hole 13 is in contact with the surface of the square column 9. Springs 14 are fixedly connected to the left side of the adjusting screw 12 and the right side of the column 8. A second bearing 15 is fixedly connected to the surface of the adjusting screw 12. A turntable 16 is fixedly connected to the outer ring of the second bearing 15. A handle 17 is fixedly connected to the right side of the turntable 16. A connecting hole 18 is opened inside the turntable 16. A circular plate 19 is fixedly connected to the surface of the square column 9. A connecting post 20 is fixedly connected to the left side of the circular plate 19. The surface of the connecting post 20 is in contact with the inner wall of the connecting hole 18. A rotating block 21 is fixedly connected to the surface of the adjusting screw 12.

[0017] The upper surface of the support plate 3 is provided with a guide groove 25, and a guide block 26 is fitted into the inner wall of the guide groove 25. The upper surface of the guide block 26 is fixedly connected to the bottom of the right positioning block 5.

[0018] It should be noted that the right positioning block 5 is connected to the cylinder 8 via the ring 6 and the first bearing 7, and the cylinder 8 can rotate freely. Through the cooperation of the square column 9 and the square hole 13, the cylinder 8 and the adjusting screw 12 can rotate synchronously. When the adjusting screw 12 rotates, through the cooperation of the adjusting screw 12 and the threaded cylinder 11, the right positioning block 5 can move to the left or right. After both the left positioning block 4 and the right positioning block 5 are in contact with the sheet metal part, by continuing to move the adjusting screw 12 to the left, the spring 14 can be compressed, increasing the clamping force applied to the sheet metal part by the left positioning block 4 and the right positioning block 5. Simultaneously, when the cylinder 8 and the adjusting screw 12... When the distance between 2 decreases, the distance between the circular plate 19 and the turntable 16 increases. When the connecting post 20 moves out of the connecting hole 18, the user can no longer rotate the adjusting screw 12 by the handle 17. At this time, the distance between the adjusting screw 12 and the cylindrical post 8 will no longer decrease. At this time, the clamping force applied by the left positioning block 4 and the right positioning block 5 to the sheet metal will not be too large. When the left positioning block 4 and the right positioning block 5 need to loosen the sheet metal, the adjusting screw 12 can be directly controlled to rotate by rotating the rotating block 21. Through the cooperation of the adjusting screw 12 and the threaded cylinder 11, the left positioning block 4 and the right positioning block 5 can loosen the sheet metal.

[0019] like Figures 1 to 11As shown, a rectangular hole 22 is provided inside the square column 9. A limit block 23 is attached to the inner wall of the rectangular hole 22. The upper and lower sides of the limit block 23 are fixedly connected to the inner wall of the square hole 13. A vent hole 24 is provided inside the limit block 23.

[0020] The length of the rectangular hole 22 is greater than the length of the limiting block 23, and the vent hole 24 is located in the middle of the limiting block 23.

[0021] It should be noted that when the connecting post 20 is separated from the connecting hole 18, the left side of the limiting block 23 is in contact with the inner wall of the rectangular hole 22. At this time, through the cooperation of the limiting block 23 and the rectangular hole 22, the right positioning block 5 cannot continue to move to the right, thereby enabling the left positioning block 4 and the right positioning block 5 to stably fix the sheet metal part on the support plate 3.

[0022] like Figures 1 to 16 As shown, a connecting block 27 is fixedly connected to the upper surface of the U-shaped plate 10, and a box body 28 is fixedly connected to the upper surface of the connecting block 27. An oil injection hole 29 is opened on the upper surface of the box body 28, and a sealing plug 30 is fitted to the inner wall of the oil injection hole 29. An oil leakage hole 31 is opened at the bottom of the box body 28, and a sponge block 32 is glued to the bottom of the box body 28. The bottom of the sponge block 32 is fitted to the surface of the adjusting screw 12.

[0023] Among them, the sponge block 32 is located directly below the oil leakage hole 31, and there are two sponge blocks 32. The threaded cylinder 11 is located between the two sponge blocks 32.

[0024] It should be noted that when the sealing plug 30 is separated from the oil filling hole 29, lubricating oil can be poured into the box 28 through the oil filling hole 29. When the sealing plug 30 is inserted into the oil filling hole 29, the oil filling hole 29 can be sealed by the sealing plug 30. Through the cooperation of the oil leakage hole 31 and the sponge block 32, the lubricating oil in the box 28 can be automatically and continuously applied to the adjusting screw 12, so that the adjusting screw 12 and the threaded cylinder 11 can be continuously lubricated, thereby making the adjusting screw 12 rotate more smoothly.

[0025] The working principle of this utility model is as follows: First, the sheet metal part is placed on the support plate 3, and the left side of the sheet metal part is in contact with the left positioning block 4. Then, since the connecting post 20 is located in the connecting hole 18, the user can rotate the adjusting screw 12 by turning the handle 17. When the adjusting screw 12 rotates, the right positioning block 5 can be moved to the left by the cooperation of the adjusting screw 12 and the threaded cylinder 11. After both the left positioning block 4 and the right positioning block 5 are in contact with the sheet metal part, the adjusting screw 12 can be moved to the left by continuing to turn the handle 17, and the spring 14 will contract. At this time, as the spring 14 contracts, the clamping force applied by the left positioning block 4 and the right positioning block 5 to the sheet metal part will increase, and the distance between the round plate 19 and the turntable 16 will increase.

[0026] After the connecting post 20 separates from the connecting hole 18, the user can no longer rotate the adjusting screw 12 by the throttle 17, thus preventing the distance between the adjusting screw 12 and the cylinder 8 from decreasing. At this time, the clamping force applied to the sheet metal by the left positioning block 4 and the right positioning block 5 will not be too large. At the same time, after the connecting post 20 separates from the connecting hole 18, the left side of the limiting block 23 fits against the inner wall of the rectangular hole 22. At this time, through the cooperation of the limiting block 23 and the rectangular hole 22, the right positioning block 5 cannot continue to move to the right, and the sheet metal can be stably fixed on the support plate 3 by the left positioning block 4 and the right positioning block 5.

[0027] When the left positioning block 4 and the right positioning block 5 need to be loosened, the rotation of the adjusting screw 12 can be directly controlled by rotating the rotating block 21. Through the cooperation of the adjusting screw 12 and the threaded cylinder 11, the left positioning block 4 and the right positioning block 5 can be loosened.

[0028] 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 positioning fixture for sheet metal processing, characterized in that: The system includes a base plate (1), a column (2) fixedly connected to the upper surface of the base plate (1), a support plate (3) fixedly connected to the upper surface of the column (2), a left positioning block (4) fixedly connected to the upper surface of the support plate (3), a right positioning block (5) fitted to the upper surface of the base plate (1), a ring (6) fixedly connected to the right side of the right positioning block (5), a first bearing (7) fixedly connected to the inner wall of the ring (6), a cylinder (8) fixedly connected to the inner ring of the first bearing (7), a square column (9) fixedly connected to the right side of the cylinder (8), a U-shaped plate (10) fixedly connected to the upper surface of the support plate (3), a threaded cylinder (11) fixedly connected to the inner wall of the U-shaped plate (10), and an adjusting screw (12) threadedly connected to the inner wall of the threaded cylinder (11). A square hole (13) is provided inside the adjusting screw (12). The inner wall of the square hole (13) is in contact with the surface of the square column (9). Springs (14) are fixedly connected to the left side of the adjusting screw (12) and the right side of the column (8). A second bearing (15) is fixedly connected to the surface of the adjusting screw (12). A turntable (16) is fixedly connected to the outer ring of the second bearing (15). A handle (17) is fixedly connected to the right side of the turntable (16). A connecting hole (18) is provided inside the turntable (16). A circular plate (19) is fixedly connected to the surface of the square column (9). A connecting column (20) is fixedly connected to the left side of the circular plate (19). The surface of the connecting column (20) is in contact with the inner wall of the connecting hole (18). A rotating block (21) is fixedly connected to the surface of the adjusting screw (12).

2. The positioning fixture for sheet metal processing according to claim 1, characterized in that: The square column (9) has a rectangular hole (22) inside. A limiting block (23) is attached to the inner wall of the rectangular hole (22). The upper and lower sides of the limiting block (23) are fixedly connected to the inner wall of the square hole (13). A vent hole (24) is provided inside the limiting block (23).

3. A positioning fixture for sheet metal processing according to claim 2, characterized in that: The length of the rectangular hole (22) is greater than the length of the limiting block (23), and the vent hole (24) is located in the middle of the limiting block (23).

4. A positioning fixture for sheet metal processing according to claim 1, characterized in that: The upper surface of the support plate (3) is provided with a guide groove (25), and a guide block (26) is attached to the inner wall of the guide groove (25). The upper surface of the guide block (26) is fixedly connected to the bottom of the right positioning block (5).

5. A positioning fixture for sheet metal processing according to claim 1, characterized in that: A connecting block (27) is fixedly connected to the upper surface of the U-shaped plate (10), and a box body (28) is fixedly connected to the upper surface of the connecting block (27). An oil injection hole (29) is opened on the upper surface of the box body (28), and a sealing plug (30) is fitted to the inner wall of the oil injection hole (29). An oil leakage hole (31) is opened at the bottom of the box body (28), and a sponge block (32) is glued to the bottom of the box body (28). The bottom of the sponge block (32) is fitted to the surface of the adjusting screw (12).

6. A positioning fixture for sheet metal processing according to claim 5, characterized in that: The sponge block (32) is located directly below the oil leakage hole (31), and there are two sponge blocks (32). The threaded cylinder (11) is located between the two sponge blocks (32).

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