Special-shaped workpiece clamping device for mechanical part machining

Abstract

The utility model discloses a special-shaped workpiece clamping device for machining mechanical spare and accessory parts, which comprises a base, two self-adaptive clamping mechanisms are oppositely arranged at the top of the base, a linear driving mechanism is arranged at the top of the base, one self-adaptive clamping mechanism is fixedly mounted on the base through a bolt, and the other self-adaptive clamping mechanism is fixedly mounted on the base through a bolt. The other self-adaptive clamping mechanism is connected with the linear driving mechanism, the self-adaptive clamping mechanism comprises a base, and the rear wall of the base is fixedly and hermetically connected with an oil tank; during use, the two self-adaptive clamping mechanisms are driven by the linear driving mechanism to get close to each other, so that a workpiece is in contact with the clamping blocks on the two sides, and when the clamping blocks are in contact with the workpiece, the clamping blocks push the plungers to slide into the stepped holes, so that redundant hydraulic oil in the oil tank is input into the rubber oil bag through the valve, the rubber oil bag is expanded, and the workpiece is clamped. When the clamping blocks make contact with the outer wall of the workpiece, the two valves are closed, then the two self-adaptive clamping mechanisms continue to be driven to get close to each other, the workpiece can be firmly fixed, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a clamping device for irregularly shaped workpieces used in machining mechanical parts. Background Technology

[0002] In the production and processing of mechanical parts, fixtures are often needed to fix and hold various parts to ensure the stability of the parts during processing. The most commonly used fixture is the bench vise. However, the jaws of the bench vise are two parallel planes, so it is only convenient for fixing and holding parts with flat outer contours. It has poor clamping ability for irregularly shaped parts.

[0003] A search revealed that patent CN221696808U discloses a clamping table for machining mechanical parts. This table, through a structure consisting of a rotating shaft, motor, sliding plate, clamping plate, and screws, utilizes a motor to drive the rotating shaft to rotate while the sliding plate and clamping plate simultaneously move towards the center. This allows for adjustment of each screw until the ends of all screws contact the surface of the part, thus completing the surface adjustment of the current part. This ensures that each screw contacts the surface of the component, enabling clamping of parts with irregular surfaces. The adjustment can then be repeated when replacing parts.

[0004] Although the above solution can clamp irregular parts by adjusting screws, a large number of screws need to be adjusted when clamping each different part, which is cumbersome and time-consuming, seriously affecting the processing efficiency of parts and needs to be improved. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping device for irregularly shaped workpieces used in the processing of mechanical parts, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A special-shaped workpiece clamping device for machining mechanical parts includes a base. Two adaptive clamping mechanisms are arranged opposite each other on the top of the base. A linear drive mechanism is also provided on the top of the base. One adaptive clamping mechanism is fixedly mounted on the base by bolts, and the other adaptive clamping mechanism is connected to the linear drive mechanism. Each adaptive clamping mechanism includes a base base. An oil tank is fixedly and sealed to the rear wall of the base base. A cover is fixedly installed to the rear wall of the oil tank. A valve and a rubber oil bladder are arranged inside the cover, communicating with each other. The valve is fixedly connected to the oil tank, and the valve handle protrudes outside the cover. Multiple stepped holes communicating with the oil tank are opened on the outer wall of the base base away from the oil tank. A plunger is slidably and sealed to the end of each stepped hole away from the oil tank. A clamping block is fixedly connected to the end of the plunger outside the stepped hole. Both the oil tank and the rubber oil bladder are filled with hydraulic oil.

[0008] As a further embodiment of this utility model: a plug sleeve is slidably fitted on the outer wall of the plunger, the plug sleeve is threadedly connected to the open end of the stepped hole, two guide blocks are symmetrically arranged on the inner wall of the plug sleeve, two guide grooves are symmetrically opened on the outer wall of the plunger, the guide blocks are located in the corresponding guide grooves, a spring is provided in the stepped hole, one end of the spring abuts against the plunger, the other end of the spring abuts against the inner wall of the stepped hole, and a sealing ring is fitted on the outer wall of the plunger located in the stepped hole.

[0009] As a further embodiment of this utility model: the top of the plug sleeve is connected to a hand-tightening bolt through a threaded hole, a pressure block is provided in the threaded hole, the bottom end of the pressure block is provided with an arc-shaped groove that fits against the outer wall of the plunger, and the bottom end of the hand-tightening bolt abuts against the top of the pressure block.

[0010] As a further embodiment of this utility model: the linear drive mechanism includes a nut fixedly installed on the top of the base, a screw rod is fitted inside the nut, one end of the screw rod is rotatably connected to the corresponding cover through a bearing seat, and the other end of the screw rod is fixedly connected to a handwheel.

[0011] As a further improvement of this utility model: the adaptive clamping mechanism connected to the linear drive mechanism has slide rails fixedly connected to both outer walls, and two sliders are fixedly connected to the top of the base, with the slide rails slidably sleeved on the corresponding sliders.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In use, this invention uses a linear drive mechanism to drive two adaptive clamping mechanisms closer together so that the workpiece contacts the clamping blocks on both sides. When the clamping blocks contact the workpiece, they push the plunger to slide into the stepped hole, allowing excess hydraulic oil in the oil tank to be introduced into the rubber oil bladder through the valve, causing the rubber oil bladder to expand. After all the clamping blocks are in contact with the outer wall of the workpiece, the two valves are closed, and then the two adaptive clamping mechanisms are driven closer together to firmly fix the workpiece. The operation is simple and convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a clamping device for irregularly shaped workpieces used in the processing of mechanical parts.

[0015] Figure 2 This is a top sectional view of a clamping device for machining irregularly shaped workpieces.

[0016] Figure 3 This is a cross-sectional schematic diagram of the adaptive clamping mechanism in a clamping device for irregularly shaped workpieces used in machining mechanical parts.

[0017] Figure 4 for Figure 1 Sectional view at point A in the middle.

[0018] The components include: base 1, adaptive clamping mechanism 2, base 3, oil tank 4, cover 5, valve 6, rubber oil bladder 7, stepped hole 8, plunger 9, sealing ring 10, clamping block 11, plug sleeve 12, guide block 13, guide groove 14, pressure block 15, hand-tightening bolt 16, spring 17, nut 18, screw 19, handwheel 20, slide rail 21, and slider 22. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4In this embodiment of the utility model, a special-shaped workpiece clamping device for machining mechanical parts includes a base 1. Two adaptive clamping mechanisms 2 are arranged opposite each other on the top of the base 1. A linear drive mechanism is arranged on the top of the base 1. One of the adaptive clamping mechanisms 2 is fixedly installed on the base 1 by bolts, and the other adaptive clamping mechanism 2 is connected to the linear drive mechanism. The adaptive clamping mechanism 2 includes a base 3. An oil tank 4 is fixedly and sealed to the rear wall of the base 3. A cover 5 is fixedly installed on the rear wall of the oil tank 4. A valve 6 and a rubber oil bladder 7 are arranged inside the cover 5. The valve 6 is fixedly connected to the oil tank 4. The handle of the valve 6 protrudes outside the cover 5. Multiple stepped holes 8 connected to the oil tank 4 are opened on the outer wall of the base 3 away from the oil tank 4. A plunger 9 is slidably and sealed to the end of the stepped hole 8 away from the oil tank 4. A clamping block 11 is fixedly connected to the end of the plunger 9 outside the stepped hole 8. The oil tank 4 and the rubber oil bladder 7 are both filled with hydraulic oil.

[0021] By adopting the above-described scheme, this utility model, in use, places the workpiece to be clamped between two adaptive clamping mechanisms 2, and then drives the two adaptive clamping mechanisms 2 to move closer to each other through a linear drive mechanism, so that the workpiece contacts the clamping blocks 11 on both sides. When the clamping blocks 11 contact the workpiece, and the two adaptive clamping mechanisms 2 continue to move closer, the clamping blocks 11 will push the plungers 9 to slide into the stepped hole 8, so that the excess hydraulic oil in the oil tank 4 is input into the rubber oil bladder 7 through the valve 6, so that the rubber oil bladder 7 expands. When the clamping blocks 11 are in contact with the outer wall of the workpiece, the two valves 6 are closed, and then the two adaptive clamping mechanisms 2 are driven to move closer to each other, so that the workpiece can be firmly fixed. The operation is simple and convenient. After the workpiece is clamped, the two adaptive clamping mechanisms 2 are moved away from each other to remove the workpiece. Then the two valves 6 are opened, and the excess hydraulic oil in the rubber oil bladder 7 will flow back into the oil tank 4, so that each plunger 9 is reset on the base 3, thereby facilitating the next clamping.

[0022] Specific combination Figure 1-4 In one embodiment of this utility model, a plug sleeve 12 is slidably fitted on the outer wall of the plunger 9. The plug sleeve 12 is threadedly connected to the open end of the stepped hole 8. Two guide blocks 13 are symmetrically arranged on the inner wall of the plug sleeve 12. Two guide grooves 14 are symmetrically opened on the outer wall of the plunger 9. The guide blocks 13 are located in the corresponding guide grooves 14. A spring 17 is provided in the stepped hole 8. One end of the spring 17 abuts against the plunger 9, and the other end of the spring 17 abuts against the inner wall of the stepped hole 8. A sealing ring 10 is fitted on the outer wall of the plunger 9 located in the stepped hole 8.

[0023] By cooperating with the guide block 13 and the guide groove 14, the range of motion of the plunger 9 can be limited on the base 3 to prevent the plunger 9 from disengaging from the stepped hole 8. With the setting of the spring 17, after the workpiece is processed and the valve 6 is opened, the plunger 9 can be quickly reset under the action of the spring 17.

[0024] Specific combination Figure 1 and Figure 4 In one embodiment of the present invention, the top of the plug sleeve 12 is connected to a hand-tightening bolt 16 through a threaded hole, a pressure block 15 is provided in the threaded hole, and the bottom end of the pressure block 15 is provided with an arc-shaped groove that fits against the outer wall of the plunger 9. The bottom end of the hand-tightening bolt 16 abuts against the top of the pressure block 15.

[0025] By setting up the hand-tightening bolts 16 and the pressure block 15, when processing a large batch of identical workpieces, after fixing and clamping a workpiece using the adaptive clamping mechanism 2, tightening each hand-tightening bolt 16, and using the pressure block 15 to lock the plunger 9 onto the sleeve 12, the workpiece can be clamped more quickly when processing the next workpiece, and the positioning accuracy of repeatedly clamping the same type of workpiece can be improved.

[0026] Specific combination Figure 1 and Figure 2 In one embodiment of the present invention, the linear drive mechanism includes a nut 18 fixedly installed on the top of the base 1, a screw 19 being fitted inside the nut 18, one end of the screw 19 being rotatably connected to the corresponding cover 5 through a bearing seat, and the other end of the screw 19 being fixedly connected to a handwheel 20.

[0027] By rotating the screw 19 with the handwheel 20, the screw 19 and the nut 18 can be used to drive the corresponding adaptive clamping mechanism 2 to slide on the base 1, so as to adjust the distance between the two adaptive clamping mechanisms 2. The operation is simple and convenient.

[0028] Specific combination Figure 1 and Figure 2 In one embodiment of this utility model, the adaptive clamping mechanism 2 connected to the linear drive mechanism has slide rails 21 fixedly connected to both outer walls, and two sliders 22 are fixedly connected to the top of the base 1. The slide rails 21 are slidably sleeved on the corresponding sliders 22.

[0029] The cooperation of slide rail 21 and slider 22 can guide the movement of adaptive clamping mechanism 2 on base 1, thereby improving its movement stability.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A profiled workpiece holding device for machining of mechanical parts, characterized in that: The utility model provides a kind of self-adapting clamping mechanism, including base (1), the top of the base (1) is provided with two self-adapting clamping mechanism (2), the top of the base (1) is provided with linear drive mechanism, one self-adapting clamping mechanism (2) is fixedly installed on base (1) by bolt, another self-adapting clamping mechanism (2) is connected with linear drive mechanism, the self-adapting clamping mechanism (2) includes pedestal (3), the rear wall of the pedestal (3) is fixedly connected with oil tank (4) sealingly, the rear wall of the oil tank (4) is fixedly installed with cover (5), the cover (5) is provided with valve (6) and rubber oil bag (7) that are interconnected, the valve (6) is fixedly communicated with oil tank (4), the handle of the valve (6) is out of cover (5), the outer wall of the pedestal (3) away from oil tank (4) is provided with multiple stepped holes (8) that are communicated with oil tank (4), the one end of the stepped hole (8) away from oil tank (4) is slidably connected with plunger (9) sealingly, the one end of the plunger (9) located outside stepped hole (8) is fixedly connected with clamping block (11), the oil tank (4) and rubber oil bag (7) are filled with hydraulic oil.

2. The profiled workpiece holding device for machining of mechanical parts according to claim 1, characterized in that: The outer wall of the plunger (9) is slidably sleeved with plug sleeve (12), the plug sleeve (12) is threadedly connected with the opening end of stepped hole (8), the inner wall of the plug sleeve (12) is symmetrically provided with two guide blocks (13), the outer wall of the plunger (9) is symmetrically provided with two guide grooves (14), the guide block (13) is located in the corresponding guide groove (14), the stepped hole (8) is provided with spring (17), one end of the spring (17) is abutted with plunger (9), the other end of the spring (17) is abutted with the inner wall of stepped hole (8), the outer wall of the plunger (9) located in stepped hole (8) is sleeved with sealing ring (10).

3. The profiled workpiece clamping device for machining of mechanical parts according to claim 2, characterized in that: The top of the plug sleeve (12) is connected with hand screw bolt (16) by thread hole cooperation, the thread hole is provided with pressing block (15), the bottom end of the pressing block (15) is provided with arc slot that is fitted with the outer wall of plunger (9), the bottom end of the hand screw bolt (16) is abutted with the top of pressing block (15).

4. The profiled workpiece holding device for machining of mechanical parts as claimed in claim 1 wherein: The linear drive mechanism includes nut (18) fixedly installed on the top of base (1), the screw rod (19) is cooperatively penetrated in the nut (18), one end of the screw rod (19) is rotatably connected with corresponding cover (5) through bearing seat, the other end of the screw rod (19) is fixedly connected with hand wheel (20).

5. The profiled workpiece holding device for machining of mechanical parts as claimed in claim 1, wherein: The two side outer walls of the self-adapting clamping mechanism (2) connected with linear drive mechanism are fixedly connected with slide rail (21), the top of the base (1) is fixedly connected with two sliding blocks (22), the slide rail (21) is slidably sleeved on corresponding sliding block (22).

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