Fixing clamp for machining

Abstract

The utility model relates to the technical field of machining clamps, in particular to a fixing clamp for machining, which can adjust the clamping position and the clamping range according to the size of a workpiece, so that the workpiece with larger size is clamped and fixed more firmly, and the stability of the workpiece during machining is improved. Comprising a machining table used for containing workpieces, two sets of fixing plates are symmetrically and fixedly installed at the top end of the machining table, hydraulic cylinders are fixedly installed on the two sets of fixing plates, the inner sides of T-shaped cylindrical positioning pins abut against the inner wall of a containing groove, a cross beam is fixedly connected to the top end of an adjusting plate, and a U-shaped long groove is formed in the inner side of the cross beam; a hand wheel is fixedly arranged at the front end of the two-way threaded rod, the two-way threaded rod is symmetrically sleeved with two U-shaped sliding blocks in a screwed mode, the two U-shaped sliding blocks are installed on the cross beam in a sliding mode by being matched with the U-shaped long grooves, and auxiliary clamping plates are fixedly connected to the two U-shaped sliding blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing fixtures, in particular to a fixing fixture for mechanical processing. Background Art

[0002] Machining refers to the process of changing the external dimensions or performance of a workpiece through a mechanical device. In machining, the shape, size and surface quality of the workpiece can be changed by using machining methods.

[0003] Before processing the workpiece, it is necessary to fix the workpiece to prevent the parts from shifting during the processing. Therefore, a fixing fixture is needed in mechanical processing.

[0004] Currently, the existing fixing fixtures used in mechanical processing are mostly mechanical fixtures that use screws to drive the clamping plates for fixing, or hydraulic fixtures that use hydraulic pressure to push the clamping plates to move and clamp. However, the fixture structures are relatively simple, and the clamping position of the clamping plates is fixed and cannot be adjusted. When clamping the workpiece, the clamping position cannot be adjusted according to the size of the workpiece. The clamping range is limited, which can easily make the clamping of larger workpieces unstable, affecting the stability of the workpiece during processing. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a fixing fixture for machining that can adjust the clamping position according to the size of the workpiece, can adjust the clamping range, so that larger workpieces can be clamped more firmly, and improve the stability of the workpiece during machining.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing fixture for mechanical processing, comprising a processing table for placing a workpiece, a clamping mechanism and an auxiliary mechanism, the clamping mechanism comprising two sets of fixing plates, the two sets of fixing plates being symmetrically fixedly mounted on the top of the processing table, the two sets of fixing plates being fixedly mounted with hydraulic cylinders, the output ends of the two sets of hydraulic cylinders being fixedly connected with main splints, the bottom ends of the two sets of main splints being in contact with the top of the processing table, the two sets of main splints being provided with auxiliary mechanisms for auxiliary clamping, the auxiliary mechanisms comprising an adjusting plate, the top end of the main splint being provided with a receiving groove, the adjusting plate being slidably mounted on the main splint by cooperating with the receiving groove, and the adjusting plate being equidistantly provided with There are multiple groups of positioning holes, and a T-shaped cylindrical locating pin is slidingly provided on the main splint, and a spring is provided on the T-shaped cylindrical locating pin. The two ends of the spring are fixedly connected to the outer wall of the main splint and the T-shaped cylindrical locating pin respectively. The T-shaped cylindrical locating pin is inserted into the positioning hole under the action of the spring, and the inner side of the T-shaped cylindrical locating pin is against the inner wall of the storage slot. The top of the adjusting plate is fixedly connected to a beam, and a U-shaped long groove is provided on the inside of the beam. A two-way threaded rod is rotatably installed on the beam, and a handwheel is fixed at the front end of the two-way threaded rod. Two groups of U-shaped sliders are symmetrically screwed on the two-way threaded rod. The two groups of U-shaped sliders are slidably installed on the beam by cooperating with the U-shaped long groove, and the two groups of U-shaped sliders are fixedly connected with auxiliary splints.

[0008] Preferably, two groups of connecting plates are fixedly provided on the two groups of main splints in a front-to-back symmetrical manner, guide rods are fixedly connected to the outer sides of the two groups of connecting plates, and two groups of guide holes are symmetrically provided on the two groups of fixed plates, and the guide rods are slidably installed on the fixed plates by cooperating with the guide holes.

[0009] Preferably, the inner sides of the two groups of main splints and the inner sides of the four groups of auxiliary splints are adapted and fixedly connected with anti-slip rubber pads.

[0010] Preferably, pull rings are fixedly provided on the outer sides of the two groups of T-shaped cylindrical locating pins.

[0011] Preferably, both groups of hand wheels are rotatably provided with crank handles.

[0012] Preferably, sliding sleeves are fixedly provided in the two groups of guide holes on the two groups of fixing plates.

[0013] The U-shaped slider is rotated to move the U-shaped slider outwards, and the U-shaped slider drives the auxiliary slider to slide outwards. The main plate is moved to move the two sets of auxiliary clamps away from each other, thereby expanding the clamping range to accommodate workpieces of different lengths and sizes. After the positions are adjusted, the hydraulic cylinder is started to push the main clamp toward the workpiece, and the workpiece is clamped and fixed by the main clamp and the auxiliary clamp. For larger workpieces, the main clamps clamp and fix from the bottom of both sides of the workpiece, and the auxiliary clamps clamp and fix from the front and back of the upper part of both sides of the workpiece. The clamping positions of the main clamp and the two sets of auxiliary clamps are in a triangular posture, so that the workpiece is stably clamped and fixed, so that the clamping position can be adjusted according to the size of the workpiece, and the clamping range can be adjusted to make the clamping and fixation of larger workpieces more secure, thereby improving the stability of the workpiece during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an axonometric structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of a partial axonometric structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the axonometric structure of the main splint in the present utility model;

[0017] Figure 4 This is a schematic diagram of the axonometric structure of the auxiliary mechanism in the utility model;

[0018] Figure 5 This is a schematic diagram of a partial axonometric explosion structure of the auxiliary mechanism in the utility model;

[0019] Figure 6 This is a schematic diagram of the axonometric cross-sectional structure of the crossbeam in the utility model;

[0020] Markings in the attached figure: 1. Processing table; 2. Fixed plate; 3. Hydraulic cylinder; 4. Main splint; 5. Storage slot; 6. Adjustment plate; 7. Positioning hole; 8. T-shaped cylindrical positioning pin; 9. Spring; 10. Crossbeam; 11. Bidirectional threaded rod; 12. Handwheel; 13. U-shaped slider; 14. Auxiliary splint; 15. Connecting plate; 16. Guide rod; 17. Anti-slip rubber pad; 18. Pull ring; 19. Crank handle; 20. Sleeve. DETAILED DESCRIPTION

[0021] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Example

[0022] See also Figures 1-6The utility model is a fixing fixture for mechanical processing, including a processing table 1 for placing a workpiece, two groups of fixing plates 2 are symmetrically fixedly installed on the top of the processing table 1, and hydraulic cylinders 3 are fixedly installed on the two groups of fixing plates 2. The output ends of the two groups of hydraulic cylinders 3 are fixedly connected to the main splints 4, and the bottom ends of the two groups of main splints 4 are in contact with the top of the processing table 1. The two groups of main splints 4 are provided with auxiliary mechanisms for auxiliary clamping. The auxiliary mechanisms include an adjusting plate 6, a receiving groove 5 is provided on the top of the main splint 4, and the adjusting plate 6 is slidably installed on the main splint 4 by cooperating with the receiving groove 5. A plurality of positioning holes 7 are equidistantly provided on the adjusting plate 6, and a T-shaped cylindrical positioning pin 8 is slidably provided on the main splint 4. The two ends of the spring 9 are fixedly connected to the outer wall of the main splint 4 and the T-shaped cylindrical locating pin 8 respectively. The T-shaped cylindrical locating pin 8 is inserted into the locating hole 7 under the action of the spring 9, and the inner side of the T-shaped cylindrical locating pin 8 is against the inner wall of the receiving groove 5. The top of the adjusting plate 6 is fixedly connected with a crossbeam 10. The inner side of the crossbeam 10 is provided with a U-shaped long groove. A two-way threaded rod 11 is rotatably installed on the crossbeam 10. A handwheel 12 is fixedly provided at the front end of the two-way threaded rod 11. The symmetrical screw-mounted sleeves on the two-way threaded rod 11 are provided with two groups of U-shaped sliders 13. The two groups of U-shaped sliders 13 are slidably installed on the crossbeam 10 by cooperating with the U-shaped long groove. The two groups of U-shaped sliders 13 are fixedly connected with auxiliary splints 14. When in use, the workpiece to be processed is placed The auxiliary splint 14 is placed on the processing table 1 so that it is between the two sets of main splints 4, and then the position of the auxiliary splint 14 is adjusted according to the size of the workpiece. When adjusting, the T-cylindrical locating pin 8 is pulled outward to disengage the T-cylindrical locating pin 8 from the positioning hole 7, and then the height of the adjustment plate 6 is slid and adjusted, and the T-cylindrical locating pin 8 is inserted into the positioning hole 7 at the corresponding height, so as to adapt to workpieces of different heights and sizes, so that the auxiliary splint 14 can be clamped to the high position on both sides of the workpiece, and the two-way threaded rod 11 is rotated by the handwheel 12, so that the two-way threaded rod 11 drives the U-shaped slider 13 to slide outward along the U-shaped long groove, and then the U-shaped slider 13 drives the auxiliary splint 14 to slide outward, so that the two sets of auxiliary splints 14 The main plate 4 and the auxiliary plate 14 are moved away from each other, thereby expanding the clamping range to adapt to workpieces of different lengths. After the positions are adjusted, the hydraulic cylinder 3 is started to push the main clamping plate 4 toward the workpiece, and then the workpiece is clamped and fixed by the main clamping plate 4 and the auxiliary clamping plate 14. For larger workpieces, the main clamping plate 4 is clamped and fixed from the bottom of both sides of the workpiece, and the auxiliary clamping plates 14 are clamped and fixed from the front and back of the upper part of both sides of the workpiece. The clamping positions of the main clamping plate 4 and the two groups of auxiliary clamping plates 14 are in a triangular posture, so that the workpiece is stably clamped and fixed, so that the clamping position can be adjusted according to the size of the workpiece, and the clamping range can be adjusted to make the clamping and fixation of larger workpieces more secure, thereby improving the stability of the workpiece during processing.

[0023] Two groups of connecting plates 15 are fixedly provided on the two groups of main splints 4 in a front-to-back symmetrical manner, and guide rods 16 are fixedly connected to the outer sides of the two groups of connecting plates 15. Two groups of guide holes are symmetrically provided on the two groups of fixed plates 2, and the guide rods 16 are slidably installed on the fixed plates 2 by cooperating with the guide holes; when the hydraulic cylinder 3 drives the main splint 4 to move, the main splint 4 drives the guide rods 16 to slide on the fixed plates 2 through the connecting plates 15. The guidance of the guide rods 16 makes the main splint 4 more stable and reliable when moving.

[0024] The inner sides of the two groups of main splints 4 and the inner sides of the four groups of auxiliary splints 14 are adapted and fixedly connected with anti-slip rubber pads 17; by providing the anti-slip rubber pads 17, the main splints 4 and the auxiliary splints 14 can fit more tightly and firmly when clamping the workpiece, avoiding slipping.

[0025] Pull rings 18 are fixedly provided on the outer sides of the two groups of T-shaped cylindrical positioning pins 8; by providing the pull rings 18, it is possible to make it more convenient for the T-shaped cylindrical positioning pins 8 to be pulled outwards.

[0026] Both groups of hand wheels 12 are rotatably provided with cranks 19 ; by providing the cranks 19 , the hand wheels 12 can be made more convenient when rotating the bidirectional threaded rod 11 .

[0027] Sliding sleeves 20 are fixedly provided in the two groups of guide holes on the two groups of fixing plates 2; by providing the sliding sleeves 20, the guide rods 16 can slide more smoothly on the fixing plates 2.

[0028] The utility model is a fixing fixture for machining, and its working principle is that when in use, the workpiece to be machined is placed on the machining table 1 so that it is between the two sets of main clamps 4, and then the position of the auxiliary clamp 14 is adjusted according to the size of the workpiece. When adjusting, the T-shaped cylindrical positioning pin 8 is pulled outward to disengage the T-shaped cylindrical positioning pin 8 from the positioning hole 7, and then the height of the adjustment plate 6 is slid and adjusted, and the T-shaped cylindrical positioning pin 8 is inserted into the positioning hole 7 at the corresponding height, so as to adapt to workpieces of different heights, so that the auxiliary clamp 14 can clamp to the high position on both sides of the workpiece, and the bidirectional threaded rod 11 is rotated by the hand wheel 12 to make the bidirectional threaded rod 11 with The movable U-shaped slider 13 slides outward along the U-shaped long groove, and then the U-shaped slider 13 drives the auxiliary clamping plate 14 to slide outward, so that the two sets of auxiliary clamping plates 14 move away from each other, thereby expanding the clamping range, so as to adapt to workpieces of different lengths. After the positions are adjusted, the hydraulic cylinder 3 is started to push the main clamping plate 4 toward the workpiece, and then the workpiece is clamped and fixed by the main clamping plate 4 and the auxiliary clamping plates 14. For larger workpieces, the main clamping plates 4 clamp and fix from the bottom of both sides of the workpiece, and the auxiliary clamping plates 14 clamp and fix from the front and back of the upper part of both sides of the workpiece. The clamping positions of the main clamping plate 4 and the two sets of auxiliary clamping plates 14 are in a triangular posture, so that the workpiece is stably clamped and fixed.

[0029] The installation method, connection method or setting method of the fixing fixture for mechanical processing of the present invention are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects; the hydraulic cylinder of the fixing fixture for mechanical processing of the present invention is purchased on the market, and technical personnel in this industry only need to install and operate it according to the instruction manual that comes with it.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fixing fixture for machining, comprising a machining table (1) for placing a workpiece, characterized in that: It also includes a clamping mechanism and an auxiliary mechanism; A clamping mechanism, wherein the clamping mechanism comprises two sets of fixed plates (2), the two sets of fixed plates (2) are symmetrically fixedly mounted on the top of the processing table (1), the two sets of fixed plates (2) are fixedly mounted with hydraulic cylinders (3), the output ends of the two sets of hydraulic cylinders (3) are fixedly connected to main clamping plates (4), the bottom ends of the two sets of main clamping plates (4) are in contact with the top of the processing table (1), and the two sets of main clamping plates (4) are provided with auxiliary mechanisms for auxiliary clamping; The auxiliary mechanism includes an adjusting plate (6), a receiving groove (5) is provided at the top of the main splint (4), the adjusting plate (6) is slidably mounted on the main splint (4) by cooperating with the receiving groove (5), a plurality of positioning holes (7) are equidistantly provided on the adjusting plate (6), a T-shaped cylindrical positioning pin (8) is slidably provided on the main splint (4), a spring (9) is sleeved on the T-shaped cylindrical positioning pin (8), two ends of the spring (9) are respectively fixedly connected to the outer wall of the main splint (4) and the T-shaped cylindrical positioning pin (8), and the T-shaped cylindrical positioning pin (8) is inserted into the positioning hole (7) under the action of the spring (9). , and the inner side of the T-shaped cylindrical positioning pin (8) is against the inner wall of the receiving groove (5), the top of the adjustment plate (6) is fixedly connected to the crossbeam (10), the inner side of the crossbeam (10) is provided with a U-shaped long groove, a two-way threaded rod (11) is rotatably installed on the crossbeam (10), the front end of the two-way threaded rod (11) is fixedly provided with a handwheel (12), and the symmetrical screw-mounted sleeves on the two-way threaded rod (11) are provided with two groups of U-shaped sliders (13), the two groups of U-shaped sliders (13) are slidably installed on the crossbeam (10) by cooperating with the U-shaped long groove, and the two groups of U-shaped sliders (13) are fixedly connected with auxiliary splints (14).

2. A fixing fixture for machining according to claim 1, characterized in that: Two groups of connecting plates (15) are fixedly provided on the two groups of main splints (4) in a front-to-back symmetrical manner. The outer sides of the two groups of connecting plates (15) are fixedly connected with guide rods (16). Two groups of guide holes are symmetrically provided on the two groups of fixed plates (2). The guide rods (16) are slidably mounted on the fixed plates (2) by cooperating with the guide holes.

3. A fixing fixture for machining according to claim 2, characterized in that: The inner sides of the two groups of main splints (4) and the inner sides of the four groups of auxiliary splints (14) are adapted and fixedly connected with anti-slip rubber pads (17).

4. A fixing fixture for machining as claimed in claim 3, characterized in that: Pull rings (18) are fixedly provided on the outsides of the two groups of T-shaped cylindrical positioning pins (8).

5. A fixing fixture for machining as claimed in claim 4, characterized in that: Both groups of hand wheels (12) are rotatably provided with crank handles (19).

6. A fixing fixture for machining according to claim 5, characterized in that: Sliding sleeves (20) are fixedly provided in the two groups of guide holes on the two groups of fixing plates (2).

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