Multi-workpiece positioning and clamping system for machining

Abstract

The utility model relates to the field of part machining and manufacturing, and discloses a multi-workpiece positioning and clamping system for machining, which comprises a bottom plate, two groups of support frames fixed at the top of the bottom plate, and a workbench fixed at the tops of the support frames, the first air cylinder is fixed to the bottom of the workbench through a screw. The limiting rod is mounted at the top of the first air cylinder; the pressing plate is arranged between the first air cylinder and the pressing plate; the positioning devices are arranged on the surface of the workbench to position a plurality of workpieces, the distance between the clamping plate and the first limiting block can be adjusted, so that the positioning devices can position the workpieces of various sizes, the practicability of the positioning devices is improved, and the working efficiency is improved. And in cooperation with lifting of the pressing plate, the positioned workpieces are clamped and fixed, so that in the machining production process, multiple sets of workpieces can be machined and drilled at the same time, and the production efficiency of workpiece machining is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing and manufacturing, in particular to a multi-workpiece positioning and clamping system for processing. Background Art

[0002] After the semi-finished blank is processed, it needs to be punched and chamfered. The whole set of fixtures needs to be placed on the table of the CNC machining center, the fixture is fixed, the semi-finished blank is placed on the fixture receiving seat, the blank is clamped with a manual push-type clamp, and the CNC machining center controls the machine tool to process the blank. After the processing is completed, the aluminum chips and cutting fluid are blown away, and the products are taken out and stacked for packaging. The manual push-type clamp is slow to clamp, the clamping positioning is not accurate, the clamping quantity is small, and the efficiency is low. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a multi-workpiece positioning and clamping system for processing, which solves the problems mentioned in the above background.

[0004] The utility model provides the following technical solutions:

[0005] The utility model discloses a multi-workpiece positioning and clamping system for processing, comprising a bottom plate and two sets of supporting frames fixed on the top of the bottom plate.

[0006] A workbench, fixed on the top of the support frame;

[0007] The first cylinder is fixed to the bottom of the workbench by screws;

[0008] A limit rod is installed on the top of the first cylinder;

[0009] A pressing plate, installed between the first cylinder and the pressing plate;

[0010] Positioning device, installed on the surface of the workbench.

[0011] Furthermore, the positioning device includes a limit block one, a limit block two, an installation groove, a return spring, a clamp and a positioning block, wherein the limit block one and the limit block two are both fixed on the surface of the workbench, the installation groove is opened on the surface of one side of the limit block one, the return spring is installed and fixed in the installation groove, the clamp is fixed to the end of the return spring away from the limit block one, and the positioning block is fixed to the end of the limit block two away from the limit block one.

[0012] Furthermore, a second cylinder is fixed to the bottom of the workbench, a top plate is fixed to the telescopic end of the second cylinder, and an invisible groove is provided on the upper surface of the workbench at a position corresponding to the top plate.

[0013] Furthermore, a through hole is provided on the surface of the pressure plate at a position corresponding to the limiting rod, and a movable groove 1 is provided on a side of one of the through holes.

[0014] Furthermore, a movable groove 2 is opened at a position corresponding to the movable groove 1 inside the pressure plate, a locking rod is installed inside the movable groove 2, and a connecting plate is fixed to one end of the locking rod away from the outer side of the pressure plate.

[0015] Furthermore, a self-locking buckle is installed on the top of one end of the movable groove 2 away from the outer side of the pressure plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model realizes the positioning of multiple workpieces by arranging several groups of positioning devices on the surface of the workbench. Since the distance between the clamping plate and the limit block can be adjusted, the positioning device can position workpieces of various sizes, thereby improving the practicality of the positioning device. The positioned workpieces are clamped and fixed by coordinating the lifting and lowering of the pressure plate, so that during the processing and production process, multiple groups of workpieces can be processed and drilled at the same time, thereby improving the production efficiency of workpiece processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0019] Figure 2 It is a structural cross-sectional view of the utility model;

[0020] Figure 3 It is a three-dimensional structural diagram of the positioning device in the utility model;

[0021] Figure 4 It is a partial cross-sectional three-dimensional structural diagram of the medium pressure plate of the utility model;

[0022] Figure 5 for Figure 4 A magnified view of the middle figure;

[0023] The numbers in the figure represent: 1. bottom plate; 2. support frame; 3. workbench; 4. invisible groove; 5. first cylinder; 6. limit rod; 7. pressure plate; 8. second cylinder; 9. top plate; 10. limit block 1; 11. limit block 2; 12. mounting groove; 13. reset spring; 14. clamping plate; 15. positioning block; 16. movable groove 1; 17. movable groove 2; 18. locking rod; 19. connecting plate; 20. self-locking buckle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 , including a base plate 1 and two groups of support frames 2 fixed on the top of the base plate 1, a workbench 3 fixed on the top of the support frame 2; a first cylinder 5, fixed to the bottom of the workbench 3 by screws, and located on the outside of the two groups of support frames 2, a through hole is opened on the surface of the workbench 3 corresponding to the position of the telescopic rod of the first cylinder 5, so that the telescopic rod of the first cylinder 5 can pass through the through hole and extend to the top of the workbench 3; a limit rod 6 is installed on the top of the first cylinder 5; a pressing plate 7 is installed between the first cylinder 5 and the pressing plate 7, a through groove is opened in the middle of the pressing plate 7, and a plurality of support rods are fixed to the bottom of the through groove; a positioning device is installed on the surface of the workbench 3. The positioning device includes a limit block 10, a limit block 11, a mounting groove 12, a reset spring 13, a clamp 14 and a positioning block 15, wherein the limit block 10 and the limit block 11 are both fixed on the surface of the workbench 3, but are arranged on both sides of the surface of the workbench 3, protrusions are fixed on both sides of the surface of the limit block 10, and the protrusions are provided with a slope inclined outward, the mounting groove 12 is provided on the surface of one side of the limit block 10, the reset spring 13 is fixed in the mounting groove 12, the clamp 14 is fixed to the end of the reset spring 13 away from the limit block 10, and the position of the clamp 14 corresponding to the protrusion of the limit block 10 is also provided with an inclined fixed block, and the inclined fixed block of the clamp 14 is symmetrical with the inclined surface of the limit block 10, so as to facilitate the workpiece to be processed to be inserted into the limit Between block 10 and the clamping plate 14, the positioning block 15 is fixed at the end of the limit block 2 11 away from the limit block 10. The limit block 10 and the limit block 2 11 have basically the same structure except for the presence or absence of the positioning block 15. When the workpiece to be processed is inserted from the end of the limit block 10 into between the limit block 10 and the clamping plate 14, the return spring 13 is pushed and compressed by the workpiece. At the same time, the return spring 13 pushes the clamping plate 14 to clamp the workpiece through the reverse force, so that the workpiece is close to the side wall position of the limit block 10. When the end of the workpiece touches the positioning block 15, the workpiece stops moving, completing the installation and positioning of the workpiece, and then the first cylinder 5 drives the pressure plate 7 to descend, so that the pressure plate 7 clamps the workpiece from the top, thereby achieving the effect of fixing the workpiece.

[0026] A second cylinder 8 is fixed to the bottom of the workbench 3, and the second cylinder 8 is located between the two groups of support frames 2. A top plate 9 is fixed to the telescopic end of the second cylinder 8. An invisible groove 4 is opened on the upper surface of the workbench 3 corresponding to the position of the top plate 9. When the pressure plate 7 clamps the workpiece, the second cylinder 8 retracts to drop the top plate 9 back into the invisible groove 4. When the workpiece is drilled, the pressure plate 7 is lifted by the first cylinder 5 to release the workpiece from the fixed clamping state, and then the top plate 9 is lifted by the second cylinder 8, so that the second cylinder 8 lifts the finished workpiece limited between the limit block 10 and the clamping plate 14, which is convenient for the staff to collect.

[0027] A through hole is provided on the surface of the pressing plate 7 at the position corresponding to the position of the limiting rod 6, and a movable groove 16 is provided on the side of one of the through holes. The pressing plate 7 can be rotated around the limiting rod 6 away from the movable groove 16 through the movable groove 16. When collecting the finished workpieces, the pressing plate 7 can be rotated to one side to facilitate the collection work of the staff. A movable groove 2 17 is provided inside the pressing plate 7 at the position corresponding to the movable groove 16, and the movable groove 2 17 is located on the side of the limiting rod 6. A locking rod 18 is installed inside the movable groove 2 17. A knob is fixed to the end of the locking rod 18 located on the outside of the pressing plate 7, and a connecting plate 19 is fixed to the end of the locking rod 18 away from the outside of the pressing plate 7. A limiting groove is provided on the top of the connecting plate 19. A self-locking buckle 20 is installed on the top of one end of the movable groove 17 away from the outer side of the pressure plate 7. When the pressure plate 7 needs to be fixed with the limiting rod 6, the locking rod 18 is pushed toward the middle of the pressure plate 7 to make the connecting plate 19 contact the side wall of the movable groove 17, and then the connecting plate 19 is erected by rotating the locking rod 18. The two sides of the erected connecting plate 19 are restricted to prevent it from sliding out of the movable groove 17, and at the same time, the top of the connecting plate 19 contacts the self-locking buckle 20, and the self-locking buckle 20 slides into the limiting groove of the connecting plate 19 to prevent the connecting plate 19 from automatically rotating in the opposite direction. The locking rod 18 is moved to limit and fix the limiting rod 6 inside the movable groove 16, ensuring that when the first cylinder 5 drives the pressing plate 7 to move downward to clamp the workpiece, the pressing plate 7 will not rotate automatically. When the workpiece is completed and the finished product needs to be collected, the locking rod 18 is rotated in the opposite direction to disengage the self-locking buckle 20 from the connecting plate 19. The connecting plate 19 can be moved away from the pressing plate 7 through the locking rod 18, so that the movable groove 16 and the locking rod 18 are staggered, so that the limiting rod 6 can be disengaged from the inside of the movable groove 16, allowing the pressing plate 7 to rotate.

[0028] Working principle: when drilling a hole on a workpiece, rotate the locking rod 18 and then pull it to the side away from the pressure plate 7 so that the locking rod 18 is staggered with the limiting rod 6, which facilitates the rotation of the pressure plate 7. After the pressure plate 7 rotates, it is convenient for the staff to install the workpiece into the positioning device. When installing the workpiece into the positioning device, face the surface of the workpiece to be drilled upwards, and then push the workpiece between the limiting block 10 and the clamping plate 14. When the end of the workpiece touches the positioning block 15, the workpiece is successfully installed. When the workpiece is installed, The pressing plate 7 rotates back to its original position, and the locking rod 18 is pushed into the movable groove 17 again for rotation, so that the locking rod 18 limits the fixed limit rod 6, and then the pressing plate 7 is moved downward by the first cylinder 5, so that the pressing plate 7 is pressed on the upper surface of the workpiece to clamp and fix the workpiece, and then the workpiece is drilled from the top of the pressing plate 7. When the workpiece is drilled, the pressing plate 7 is lifted and rotated again, and then the top plate 9 is lifted by the second cylinder 8 to separate the drilled workpiece from the positioning device, making it convenient for the staff to collect the workpiece.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-workpiece positioning and clamping system for processing, comprising a base plate (1) and two sets of support frames (2) fixed on the top of the base plate (1), It is characterized in that Also included are: A workbench (3) is fixed on the top of the support frame (2); A first cylinder (5) is fixed to the bottom of the workbench (3) by screws; A limiting rod (6) is mounted on the top of the first cylinder (5); A pressing plate (7) is installed between the first cylinder (5) and the pressing plate (7); The positioning device is installed on the surface of the workbench (3).

2. A multi-workpiece positioning and clamping system for processing according to claim 1, characterized in that: The positioning device comprises a limit block 1 (10), a limit block 2 (11), a mounting groove (12), a return spring (13), a clamping plate (14) and a positioning block (15), wherein the limit block 1 (10) and the limit block 2 (11) are both fixed on the surface of a workbench (3), the mounting groove (12) is arranged on the surface of one side of the limit block 1 (10), the return spring (13) is fixed in the mounting groove (12), the clamping plate (14) is fixed on one end of the return spring (13) away from the limit block 1 (10), and the positioning block (15) is fixed on one end of the limit block 2 (11) away from the limit block 1 (10).

3. The multi-workpiece positioning and clamping system for processing according to claim 1, characterized in that: A second cylinder (8) is fixed at the bottom of the workbench (3), a top plate (9) is fixed at the telescopic end of the second cylinder (8), and an invisible groove (4) is provided on the upper surface of the workbench (3) at a position corresponding to the top plate (9).

4. The multi-workpiece positioning and clamping system for processing according to claim 1, characterized in that: A through hole is provided on the surface of the pressure plate (7) at a position corresponding to the limiting rod (6), and a movable groove (16) is provided on the side of one of the through holes.

5. A multi-workpiece positioning and clamping system for processing according to claim 4, characterized in that: A movable groove 2 (17) is provided inside the pressing plate (7) at a position corresponding to the movable groove 1 (16), a locking rod (18) is installed inside the movable groove 2 (17), and a connecting plate (19) is fixed to one end of the locking rod (18) away from the outer side of the pressing plate (7).

6. A multi-workpiece positioning and clamping system for processing according to claim 5, characterized in that: A self-locking buckle (20) is installed on the top of one end of the movable groove 2 (17) away from the outer side of the pressing plate (7).

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