Fixing mechanical clamp for machining

Abstract

The utility model relates to the technical field of machining, and discloses a fixed mechanical clamp for machining, which comprises a machining table, a support leg frame is fixed below the machining table, four groups of cross-shaped guide grooves are formed in the surface of the machining table, cross-shaped guide blocks are arranged in the cross-shaped guide grooves in a sliding manner, and the cross-shaped guide blocks are arranged in the cross-shaped guide grooves in a sliding manner. A clamping plate is fixed to the upper portion of the cross-shaped guide block, a push-pull block is fixed to the lower portion of the cross-shaped guide block, an outer support is fixed to the bottom face of the machining table, a rotating handle is rotationally arranged in the outer support, a driving conical tooth is fixed to the end face of the rotating handle, and an inner connecting sleeve is arranged on the outer side of the driving conical tooth. And two groups of inner connecting shafts are fixed on the surface of the inner connecting sleeve. According to the fixed mechanical clamp for machining, a rectangular workpiece is placed on the machining table, and the rectangular workpiece can be rapidly clamped and fixed through the four sets of clamping plates, so that the clamping efficiency of the rectangular workpiece is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a fixed mechanical fixture for machining. Background Technology

[0002] Machining refers to the process of changing the shape, size, or properties of a workpiece using mechanical equipment. It can be divided into cutting and pressure processing according to the difference in processing methods.

[0003] In machining processes, workpieces need to be clamped and fixed, so corresponding mechanical fixtures are used. When clamping and fixing rectangular workpieces, the existing methods are mostly to first clamp and hold the workpiece with clamping blocks, and then fix the clamping blocks with bolts to clamp and fix the workpiece. However, this clamping method is inconvenient to clamp and fix the workpiece directly and has low efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a fixed mechanical fixture for machining, which solves the problem that fixtures are inconvenient for quickly clamping and fixing rectangular workpieces during machining.

[0006] (II) Technical Solution

[0007] To achieve the purpose of quickly clamping and fixing rectangular workpieces in the above-mentioned machining process, this utility model provides the following technical solution: a fixed mechanical fixture for machining, including a machining table, a support frame fixed below the machining table, four sets of cross-shaped guide grooves on the surface of the machining table, cross-shaped guide blocks sliding inside the cross-shaped guide grooves, a clamping plate fixed above the cross-shaped guide blocks, a push-pull block fixed below the cross-shaped guide blocks, an outer support fixed on the bottom surface of the machining table, a rotatable handle inside the outer support, a drive bevel gear fixed on the end face of the rotatable handle, an inner sleeve provided on the outer side of the drive bevel gear, and two sets of inner shafts fixed on the surface of the inner sleeve;

[0008] The inner sleeve has a limiting groove on its end face. A limiting turntable rotates inside the limiting groove. A first threaded cylinder is fixed to the end face of one side of the limiting turntable, and a second threaded cylinder is fixed to the end face of the other side of the limiting turntable. Spline grooves are formed inside the first and second threaded cylinders. A spline shaft slides axially inside the spline grooves. A driven bevel gear ring is fixed to the surface of the first and second threaded cylinders. A first threaded sleeve is threaded to the surface of the first threaded cylinder, and a second threaded sleeve is threaded to the surface of the second threaded cylinder. An adapter block is fixed to the surface of the first and second threaded sleeves. A push-pull rod is rotatably connected to the end face of the adapter block through a pivot pin. A universal joint is installed at the outer end of the spline shaft. A linkage shaft is installed at the end of the universal joint away from the spline shaft. A telescopic frame rotates on the surface of the linkage shaft through a bearing, and the end of the telescopic frame away from the linkage shaft is fixedly connected to the processing table.

[0009] Preferably, the linkage shaft is disposed between two adjacent sets of spline shafts, and the spline shaft and the linkage shaft are connected by a universal joint.

[0010] Preferably, a transition block is fixed on the push-pull block, and the push-pull block is rotatably connected to the first screw sleeve and the push-pull block is rotatably connected to the second screw sleeve via a push-pull rod and the transition block.

[0011] Preferably, the driving bevel tooth is located between two sets of driven bevel tooth rings, and the driving bevel tooth meshes with the driven bevel tooth rings on both sides.

[0012] Preferably, the No. 1 threaded cylinder and the No. 2 threaded cylinder are rotatably connected to the inner sleeve through a limiting rotating groove and a limiting rotating disk.

[0013] Preferably, the No. 1 threaded cylinder and the No. 2 threaded cylinder respectively form a telescopic spline shaft with the spline shaft on their respective sides.

[0014] Preferably, the clamping plate and the push-pull block are slidably connected to the processing table via a cross-shaped guide block and a cross-shaped guide groove.

[0015] Preferably, the telescopic frame is a right-angled shape, and the end of the telescopic frame away from the processing table is rotatably connected to the linkage shaft via a bearing.

[0016] Compared with the prior art, the present invention provides a fixed mechanical fixture for machining, which has the following advantages:

[0017] 1. This fixed mechanical fixture for machining involves placing a rectangular workpiece on the machining table, manually turning the throttle to rotate the drive bevel gear, which in turn drives the driven bevel gear rings on both sides to rotate in opposite directions. This causes the driven bevel gear rings on both sides to drive the first and second threaded cylinders to rotate in opposite directions, respectively. The first and second threaded cylinders, through the first and second threaded sleeves, enable the push-pull rod to move the clamping plate, preventing the clamping plate from moving after clamping the workpiece and avoiding workpiece wobbling. This ensures that the workpiece is firmly clamped and fixed.

[0018] 2. This machining fixture can move the first threaded sleeve inward when the first threaded cylinder rotates, and move the second threaded sleeve inward when the second threaded cylinder rotates, so that the first and second threaded sleeves move closer to each other. The first and second threaded sleeves can move the push-pull block inward through the push-pull rod, and the push-pull block can move the clamping plate inward through the cross-shaped guide block, so that the four sets of clamping plates move closer to each other and directly and quickly clamp and fix the workpiece. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a bottom view of the structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of a portion of the structure at point A;

[0022] Figure 4 This is a combined diagram of the No. 1 and No. 2 threaded cylinders of this utility model;

[0023] Figure 5 This is an exploded view of the No. 1 and No. 2 threaded cylinders of this utility model.

[0024] The components include: 1. Machining table; 2. Support frame; 3. Cross-shaped guide groove; 4. Cross-shaped guide block; 5. Clamping plate; 6. Push-pull block; 7. Outer bracket; 8. Turn handle; 9. Drive bevel gear; 10. Inner sleeve; 11. Inner shaft; 12. Limiting rotary groove; 13. Limiting turntable; 14. Threaded cylinder No. 1; 15. Threaded cylinder No. 2; 16. Spline groove; 17. Splined shaft; 18. Driven bevel gear ring; 19. Threaded sleeve No. 1; 20. Threaded sleeve No. 2; 21. Adapter block; 22. Push-pull rod; 23. Universal joint; 24. Linkage shaft; 25. Telescopic frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a fixed mechanical fixture for machining, including a machining table 1, a support frame 2 fixed below the machining table 1, four sets of cross-shaped guide grooves 3 on the surface of the machining table 1, cross-shaped guide blocks 4 sliding inside the cross-shaped guide grooves 3, a clamping plate 5 fixed above the cross-shaped guide blocks 4, a push-pull block 6 fixed below the cross-shaped guide blocks 4, an outer support 7 fixed on the bottom surface of the machining table 1, a rotatable handle 8 inside the outer support 7, a drive bevel gear 9 fixed on the end face of the rotatable handle 8, an inner sleeve 10 provided on the outer side of the drive bevel gear 9, two sets of inner shafts 11 fixed on the surface of the inner sleeve 10, and the top end of the inner shaft 11 in the vertical direction is fixedly connected to the machining table 1, and the outer end of the inner shaft 11 in the horizontal direction is rotatably connected to the drive bevel gear 9;

[0027] The end face of the inner sleeve 10 is provided with a limiting groove 12. A limiting turntable 13 rotates inside the limiting groove 12. A first threaded cylinder 14 is fixed to the end face of one limiting turntable 13, and a second threaded cylinder 15 is fixed to the end face of the other limiting turntable 13. Spline grooves 16 are provided inside the first and second threaded cylinders 14 and 15. A spline shaft 17 slides axially inside the spline grooves 16. A driven bevel gear ring 18 is fixed to the surface of the first and second threaded cylinders 14 and 15. A first threaded sleeve 19 is threadedly connected to the surface of the first threaded cylinder 14, and a second threaded sleeve is threadedly connected to the surface of the second threaded cylinder 15. 20. The surfaces of the first threaded sleeve 19 and the second threaded sleeve 20 are fixed with an adapter block 21. The end face of the adapter block 21 is rotatably connected to a push-pull rod 22 through a pivot pin. A universal joint 23 is installed on the outer end of the spline shaft 17. A linkage shaft 24 is installed on the end of the universal joint 23 away from the spline shaft 17. A telescopic frame 25 is rotatably connected to the surface of the linkage shaft 24 through a bearing. The end of the telescopic frame 25 away from the linkage shaft 24 is fixedly connected to the processing table 1. By placing the rectangular workpiece on the processing table 1, the workpiece is positioned between the four sets of clamping plates 5. When the four sets of clamping plates 5 move, the rectangular workpiece can be quickly clamped and fixed.

[0028] Furthermore, the linkage shaft 24 is located between two adjacent sets of spline shafts 17, and the spline shafts 17 and the linkage shaft 24 are connected by a universal joint 23. The two ends of the linkage shaft 24 are connected to the spline shafts 17 on both sides by the universal joint 23 respectively. Therefore, through the spline shafts 17, the universal joint 23 and the linkage shaft 24, the four sets of No. 1 threaded cylinders 14 or No. 2 threaded cylinders 15 distributed in a rectangular shape can rotate simultaneously.

[0029] Furthermore, a transition block 21 is fixed on the push-pull block 6. The push-pull block 6 is rotatably connected to the first screw sleeve 19 and the second screw sleeve 20 through the push-pull rod 22 and the transition block 21. The two ends of one push-pull rod 22 are rotatably connected to the first screw sleeve 19 and the push-pull block 6 respectively through the transition block 21. The two ends of the other push-pull rod 22 are rotatably connected to the second screw sleeve 20 and the push-pull block 6 respectively through the transition block 21. So that when the first screw sleeve 19 and the second screw sleeve 20 move, the push-pull rod 22 can drive the push-pull block 6 to move, thereby the push-pull block 6 can drive the clamping plate 5 to move.

[0030] Furthermore, the driving bevel tooth 9 is located between the two sets of driven bevel tooth rings 18. The driving bevel tooth 9 meshes with the driven bevel tooth rings 18 on both sides. When the driving bevel tooth 9 rotates, it can drive the driven bevel tooth rings 18 on both sides to rotate in the opposite direction. In turn, the driven bevel tooth rings 18 on both sides can drive the first threaded cylinder 14 and the second threaded cylinder 15 to rotate in the opposite direction, respectively.

[0031] Furthermore, the No. 1 threaded cylinder 14 and the No. 2 threaded cylinder 15 are rotatably connected to the inner sleeve 10 through the limiting rotating groove 12 and the limiting rotating disk 13. When the No. 1 threaded cylinder 14 and the No. 2 threaded cylinder 15 rotate, the limiting rotating disk 13 also rotates inside the limiting rotating groove 12 in order to support the rotation of the No. 1 threaded cylinder 14 and the No. 2 threaded cylinder 15.

[0032] Furthermore, the No. 1 threaded cylinder 14 and the No. 2 threaded cylinder 15 respectively form a telescopic spline shaft with the spline shaft 17 on their respective sides, so that when the No. 1 threaded cylinder 14 and the No. 2 threaded cylinder 15 rotate, they can drive the No. 1 threaded cylinder 14 and the No. 2 threaded cylinder 15 in other positions to rotate simultaneously through the spline shaft 17, universal joint 23 and linkage shaft 24.

[0033] Furthermore, the clamping plate 5 and the push-pull block 6 are slidably connected to the processing table 1 through the cross-shaped guide block 4 and the cross-shaped guide groove 3. During the movement of the clamping plate 5, the cross-shaped guide block 4 slides linearly inside the cross-shaped guide groove 3 to limit and guide the movement of the clamping plate 5.

[0034] Furthermore, the telescopic frame 25 is a right-angled shape. The end of the telescopic frame 25 away from the processing table 1 is rotatably connected to the linkage shaft 24 through a bearing. When the spline shaft 17 can drive the three sets of No. 1 threaded cylinder 14 and No. 2 threaded cylinder 15 in other positions to rotate through the universal joint 23 and the linkage shaft 24, the telescopic frame 25 can support the rotation of the linkage shaft 24.

[0035] In use, a rectangular workpiece is placed on the processing table 1, positioned between four sets of clamping plates 5. The operator then manually rotates the handle 8, causing the drive bevel gear 9 to rotate. This drives the driven bevel gear rings 18 on both sides to rotate in the opposite direction. The driven bevel gear rings 18 then drive the first threaded cylinder 14 and the second threaded cylinder 15 to rotate in the opposite direction, respectively. The rotation of the first and second threaded cylinders 14 drives the spline shaft 17 to rotate. The spline shaft 17, through the universal joint 23 and the linkage shaft 24, drives the other three sets of first and second threaded cylinders 14 to rotate simultaneously. Furthermore, when the first threaded cylinder 14 rotates, it causes the first threaded sleeve 19 to move inward. When the No. 2 threaded cylinder 15 rotates, it can drive the No. 2 threaded sleeve 20 to move inward, causing the No. 1 threaded sleeve 19 and the No. 2 threaded sleeve 20 to move closer to each other inward. At this time, the No. 1 threaded sleeve 19 and the No. 2 threaded sleeve 20 can drive the push-pull block 6 to move inward through the push-pull rod 22, and the push-pull block 6 can drive the clamping plate 5 to move inward through the cross-shaped guide block 4, so that the four sets of clamping plates 5 move closer to each other inward. When the four sets of clamping plates 5 come into contact with the rectangular workpiece, the workpiece can be directly and quickly clamped and fixed to improve the clamping and fixing efficiency of the workpiece. When it is necessary to disassemble the workpiece, simply rotate the handle 8 in the opposite direction to make the four sets of clamping plates 5 detach from the workpiece, and the workpiece can be removed from the processing table 1.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed mechanical fixture for machining, comprising a machining table (1), characterized in that: The processing table (1) is fixed with a support frame (2) below it. The surface of the processing table (1) is provided with four sets of cross-shaped guide grooves (3). A cross-shaped guide block (4) slides inside the cross-shaped guide groove (3). A clamping plate (5) is fixed above the cross-shaped guide block (4). A push-pull block (6) is fixed below the cross-shaped guide block (4). An outer support (7) is fixed on the bottom surface of the processing table (1). A throttle (8) rotates inside the outer support (7). A drive bevel tooth (9) is fixed on the end face of the throttle (8). An inner sleeve (10) is provided on the outer side of the drive bevel tooth (9). Two sets of inner shafts (11) are fixed on the surface of the inner sleeve (10). The top of the inner shaft (11) in the vertical direction is fixedly connected to the processing table (1), and the outer end of the inner shaft (11) in the horizontal direction is rotatably connected to the drive bevel tooth (9). The end face of the inner sleeve (10) is provided with a limiting groove (12). The limiting groove (12) is rotatably provided with a limiting turntable (13). A first threaded cylinder (14) is fixed on the end face of one side of the limiting turntable (13), and a second threaded cylinder (15) is fixed on the end face of the limiting turntable (13) on the other side. Spline grooves (16) are provided inside the first threaded cylinder (14) and the second threaded cylinder (15). A spline shaft (17) slides axially inside the spline groove (16). A driven bevel gear ring (18) is fixed on the surface of the first threaded cylinder (14) and the second threaded cylinder (15). The threaded connection has a first threaded sleeve (19), and the surface of the second threaded cylinder (15) is threaded with a second threaded sleeve (20). The surfaces of the first threaded sleeve (19) and the second threaded sleeve (20) are fixed with an adapter block (21). The end face of the adapter block (21) is rotatably connected to a push-pull rod (22) through a pivot pin. The outer end of the spline shaft (17) is equipped with a universal joint (23). The end of the universal joint (23) away from the spline shaft (17) is equipped with a linkage shaft (24). The surface of the linkage shaft (24) is rotatably connected to a telescopic bracket (25) through a bearing, and the end of the telescopic bracket (25) away from the linkage shaft (24) is fixedly connected to the processing table (1).

2. The fixed mechanical fixture for machining according to claim 1, characterized in that: The linkage shaft (24) is located between two adjacent sets of spline shafts (17), and the spline shaft (17) and the linkage shaft (24) are connected by a universal joint (23).

3. A fixed mechanical fixture for machining according to claim 1, characterized in that: The push-pull block (6) is fixed with a transition block (21). The push-pull block (6) is rotatably connected to the first screw sleeve (19) and to the second screw sleeve (20) via the push-pull rod (22) and the transition block (21).

4. A fixed mechanical fixture for machining according to claim 1, characterized in that: The driving bevel tooth (9) is located between two sets of driven bevel tooth rings (18), and the driving bevel tooth (9) meshes with the driven bevel tooth rings (18) on both sides.

5. A fixed mechanical fixture for machining according to claim 1, characterized in that: The No. 1 threaded cylinder (14) and the No. 2 threaded cylinder (15) are rotatably connected to the inner sleeve (10) through the limiting rotating groove (12) and the limiting rotating disk (13).

6. A fixed mechanical fixture for machining according to claim 1, characterized in that: The first threaded cylinder (14) and the second threaded cylinder (15) respectively form a telescopic spline shaft with the spline shaft (17) on their respective sides.

7. A fixed mechanical fixture for machining according to claim 1, characterized in that: The clamping plate (5) and the push-pull block (6) are slidably connected to the processing table (1) through the cross-shaped guide block (4) and the cross-shaped guide groove (3).

8. A fixed mechanical fixture for machining according to claim 1, characterized in that: The telescopic frame (25) is a right-angled shape, and the end of the telescopic frame (25) away from the processing table (1) is rotatably connected to the linkage shaft (24) through a bearing.

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