Pre-centering structure and three-sequence wire mixing clamp

Abstract

The utility model relates to the technical field of three-sequence mixed wire clamps, in particular to a pre-centering structure and a three-sequence mixed wire clamp, which comprises a base plate, a fan-shaped clamping plate is slidably connected onto the surface of the base plate, a first clamping position and a second clamping position are arranged on the fan-shaped clamping plate, a push plate is movably inserted into the base plate, a sliding block is fixed on the fan-shaped clamping plate, and a first clamping groove and a second clamping groove are formed in the sliding block. An inclined sliding block is fixed to the sliding block, an inclined sliding groove is formed in the push plate, and the inclined sliding block is movably inserted into the inclined sliding groove. The hub pre-centering structure has the beneficial effects that each group of sliding blocks drive each group of fan-shaped clamping plates to move in the direction close to the center line of the base plate, so that a hub is clamped in a first clamping position or a second clamping position and pre-centering of the hub is completed, and the pre-centering structure and the three-sequence mixed line clamp can adapt to pre-centering clamping of hubs of various specifications; and in the process of mixed line machining of hubs of various specifications, the machining efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of three-order mixing clamps, specifically a pre-core structure and a three-order mixing clamp. Background Technology

[0002] Mixed-line production, also known as flexible manufacturing technology, refers to the alternating production of different models and platforms of products on a single production line. The production of automobile wheel hubs relies heavily on this technology. When producing automobile wheel hubs, fixtures are indispensable as auxiliary tools for clamping workpieces. Among them, the pre-centering structure of the fixture is a key device in mechanical manufacturing used to achieve fast, accurate, and automatic centering of workpieces, and it is especially indispensable in high-precision machining and automated production lines.

[0003] In the prior art, patent application CN202223082177.X discloses a wheel hub fixing fixture, including a push base assembly, connecting push rods, and clamping base assembly. The push base assembly is located on the top of the drive cylinder, and four connecting push rods are symmetrically arranged on the upper part of the connecting push base. The clamping base assembly is connected to the end of the connecting push rods. A guide groove is provided on the top of the fixture top seat, and the clamping base assembly is connected to the inner side of the guide groove. This device differs from the original device in that it uses inner ring support to fix the wheel hub. The drive cylinder drives the connecting push base, and the pushing action of the connecting push base on the connecting push rods causes the four sliding clamping bases to slide inside the guide groove. The contact and compression action of the four arc-shaped clamping blocks on the inner ring of the wheel hub completes the clamping and fixing of the wheel hub. The four arc-shaped clamping blocks are evenly distributed on the inner ring of the wheel hub, which can ensure the concentricity of the wheel hub after fixing. Compared with the original device, it has a better clamping and fixing effect and stability, which is beneficial to subsequent processing operations.

[0004] However, the pre-centering structure of the fixed fixture used to hold the wheel hub in the existing technology can only pre-center the wheel hub with a single diameter. Since the mixed-line technology needs to process wheel hubs with different diameter specifications, the fixture needs to be changed constantly when pre-centering wheel hubs of different specifications, which seriously slows down the processing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a pre-core structure and a three-sequence mixing clamp to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pre-core structure, comprising: a base plate, a fan-shaped clamping plate slidably connected to the surface of the base plate, the fan-shaped clamping plate having a first clamping position and a second clamping position, a push plate movably inserted into the base plate, a slider fixed on the fan-shaped clamping plate, an inclined slider fixed on the slider, an inclined groove provided on the push plate, and the inclined slider movably inserted into the inclined groove.

[0007] Preferably, both the first clamping position and the second clamping position are fan-shaped groove structures, and the diameter of the first clamping position is larger than that of the second clamping position.

[0008] Preferably, the surface of the fan-shaped clamp is provided with an anti-loosening gasket mounting groove, an anti-loosening gasket is movably inserted into the anti-loosening gasket mounting groove, and a metal liner is fixed to one end of the anti-loosening gasket that extends into the anti-loosening gasket mounting groove.

[0009] Preferably, an mounting box is movably mounted on the surface of the fan-shaped clamp, the mounting box has a screw hole, a screw rod is rotatably connected in the screw hole, the wall of the screw hole has an internal thread, the screw rod has an external thread, and the internal thread of the screw hole mates with the external thread of the screw rod.

[0010] Preferably, a connecting groove is formed on the surface of the metal liner, and a connecting plate is fixed on the rod of the screw, with the connecting plate rotatably connected in the connecting groove.

[0011] Preferably, a mounting base is fixed on the surface of the mounting box, a screw is rotatably connected to the mounting base, a screw groove is formed on the surface of the fan-shaped clamp, an external thread is formed on the shank of the screw, an internal thread is formed in the groove of the screw groove, and the external thread of the screw mates with the internal thread of the screw groove.

[0012] A three-order mixed-line clamp includes the aforementioned predetermined core structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The pre-centering structure and three-sequence mixing jig proposed in this utility model have a push plate mounted on the hydraulic tappet mechanism of a lathe. When pre-centering and clamping a wheel hub, the wheel hub is placed between the first or second clamping positions opened on the surfaces of each set of fan-shaped clamping plates according to its diameter. Then, the hydraulic rod of the hydraulic tappet mechanism extends, pushing the push plate so that the inclined sliders fixed on each set of sliders are fully inserted into the inclined grooves opened on the surfaces of each set of push plates. Because the inclined sliders and inclined grooves are inclined, each set of sliders drives each set of fan-shaped clamping plates to move towards the center line of the base plate, thereby clamping the wheel hub in the first or second clamping position and completing the pre-centering of the wheel hub. This allows the pre-centering structure and three-sequence mixing jig to adapt to the pre-centering clamping of wheel hubs of various specifications, greatly improving the processing efficiency in the mixing and processing of wheel hubs of various specifications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0018] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0019] Figure 5 This is a schematic diagram of a fan-shaped clamping plate structure;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the fan-shaped clamping plate.

[0021] In the diagram: 1. Base plate; 2. Fan-shaped clamping plate; 3. First clamping position; 4. Second clamping position; 5. Anti-loosening washer mounting groove; 6. Anti-loosening washer; 7. Metal liner; 8. Mounting box; 9. Screw hole; 10. Screw; 11. Connecting groove; 12. Connecting plate; 13. Mounting seat; 14. Screw groove; 15. Slider; 16. Push plate; 17. Angled slider; 18. Angled slide groove; 19. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1: Please refer to Figures 1-6 This utility model provides a technical solution: a pre-core structure, including: a base plate 1, a fan-shaped clamping plate 2 slidably connected to the surface of the base plate 1, a first clamping position 3 and a second clamping position 4 provided on the fan-shaped clamping plate 2, a push plate 17 movably inserted into the base plate 1, a slider 16 fixed on the fan-shaped clamping plate 2, an inclined slider 18 fixed on the slider 16, an inclined groove 19 provided on the push plate 17, and the inclined slider 18 movably inserted into the inclined groove 19. The first clamping position 3 and the second clamping position 4 are both fan-shaped groove structures, and the diameter of the first clamping position 3 is larger than that of the second clamping position 4.

[0024] In actual use, the push plate 17 is mounted on the hydraulic tapping mechanism of the lathe. When pre-centering the wheel hub, the wheel hub is placed between the first clamping position 3 or the second clamping position 4 opened on the surface of each set of fan-shaped clamping plates 2 according to the diameter of the wheel hub. Then, the hydraulic rod of the hydraulic tapping mechanism extends and pushes the push plate 17, so that the inclined slider 18 fixed on each set of sliders 16 is fully inserted into the inclined slide groove 19 opened on the surface of each set of push plates 17. Because the inclined slider 18 and the inclined slide groove 19 are inclined, each set of sliders 16 drives each set of fan-shaped clamping plates 2 to move towards the center line of the base plate 1, thereby clamping the wheel hub in the first clamping position 3 or the second clamping position 4 and completing the pre-centering of the wheel hub. This allows the pre-centering structure and the three-sequence mixed-line fixture to adapt to the pre-centering clamping of wheel hubs of various specifications, greatly improving the processing efficiency in the mixed-line processing of wheel hubs of various specifications.

[0025] Example 2: Based on Example 1, in order to reinforce the clamping of the wheel hub, an anti-loosening washer mounting groove 5 is provided on the surface of the fan-shaped clamping plate 2. An anti-loosening washer 6 is movably inserted into the anti-loosening washer mounting groove 5. A metal liner 7 is fixed to one end of the anti-loosening washer 6 that extends into the anti-loosening washer mounting groove 5. An mounting box 8 is movably mounted on the surface of the fan-shaped clamping plate 2. A screw hole 9 is provided on the mounting box 8. A screw rod 10 is rotatably connected in the screw hole 9. An internal thread is provided on the hole wall of the screw hole 9. An external thread is provided on the rod body of the screw rod 10. The internal thread of the screw hole 9 and the external thread of the screw rod 10 are engaged. A connecting groove 11 is provided on the surface of the metal liner 7. A connecting plate 12 is fixed on the rod body of the screw rod 10. The connecting plate 12 is rotatably connected in the connecting groove 11.

[0026] When the profile is clamped on the first clamping position 3 or the second clamping position 4, the screw 10 is turned. Under the action of the threaded connection between the screw hole 9 and the screw 10, the screw 10 pushes the metal liner 7. The metal liner 7 pushes the anti-loosening washer 6 out of the anti-loosening washer mounting groove 5, so that the anti-loosening washer 6 abuts against the surface of the wheel hub. The anti-loosening washer 6 is made of rough rubber material, which makes the anti-loosening washer 6 and the wheel hub generate a large friction force. This friction force makes the clamping of the fan-shaped clamp 2 on the wheel hub more stable and avoids the wheel hub from slipping during high-speed rotation.

[0027] Example 3: Based on Example 2, in order to replace the anti-loosening gasket 6, a mounting base 13 is fixed on the surface of the mounting box 8. A screw 14 is rotatably connected to the mounting base 13. A screw groove 15 is opened on the surface of the fan-shaped clamp 2. The screw 14 has an external thread on its shank and an internal thread in the groove of the screw groove 15. The external thread of the screw 14 and the internal thread of the screw groove 15 are engaged.

[0028] The anti-loosening washer 6 is fixed to the metal liner 7 by adhesive. Since the hardness of the anti-loosening washer 6 is much lower than that of the wheel hub, when the anti-loosening washer 6 presses against the wheel hub, friction occurs between the anti-loosening washer 6 and the wheel hub, resulting in wear. This protects the wheel hub. When the anti-loosening washer 6 is worn too badly and needs to be replaced, the screw 14 on the mounting base 13 is unscrewed from the screw groove 15, and then the mounting box 8 can be removed from the sector-shaped clamp 2. The mounting box 8 then drives the screw 1... 0. The screw 10 then drives the metal liner 7 and the anti-loosening washer 6 to be removed from the anti-loosening washer mounting slot 5 through the connecting groove 11 and the connecting plate 12. Then, the remaining anti-loosening washer 6 is scraped off from the metal liner 7 and the residual adhesive is washed off with an adhesive remover. After that, the new anti-loosening washer 6 is glued to the metal liner 7. Then, the anti-loosening washer 6 and the metal liner 7 are inserted back into the anti-loosening washer mounting slot 5, and the screw 14 is screwed back into the screw groove 15, so that the mounting box 8 is reinstalled on the fan-shaped clamp 2, thus realizing the replacement of the anti-loosening washer 6.

[0029] In actual use, the push plate 17 is mounted on the hydraulic tappet mechanism of the lathe. When pre-centering the hub, the hub is placed between the first clamping position 3 or the second clamping position 4 opened on the surface of each set of fan-shaped clamping plates 2, according to the diameter of the hub. Then, the hydraulic rod of the hydraulic tappet mechanism extends, pushing the push plate 17, so that the inclined sliders 18 fixed on each set of sliders 16 are fully inserted into the inclined grooves 19 opened on the surface of each set of push plates 17. Because the inclined sliders 18 and the inclined grooves 19 are inclined, each set of sliders 16 drives each set of fan-shaped clamping plates 2 to move towards the center line of the base plate 1, thereby centering the hub. The wheel hub is pre-centered by clamping it in the first clamping position 3 or the second clamping position 4. This allows the pre-centering structure and the three-sequence mixing jig to adapt to the pre-centering clamping of wheel hubs of various specifications, greatly improving processing efficiency in the mixing processing of wheel hubs of various specifications. When the contour is clamped in the first clamping position 3 or the second clamping position 4, the screw 10 is turned. Under the action of the threaded connection between the screw hole 9 and the screw 10, the screw 10 pushes the metal liner 7. The metal liner 7 pushes the anti-loosening washer 6 out of the anti-loosening washer mounting groove 5, so that the anti-loosening washer 6 abuts against the surface of the wheel hub. The anti-loosening washer 6 is made of rough rubber material. This creates significant friction between the anti-loosening washer 6 and the wheel hub. This friction makes the fan-shaped clamp 2 more stable in clamping the wheel hub, preventing slippage during high-speed rotation. The anti-loosening washer 6 is fixed to the metal liner 7 by adhesive. Since the hardness of the anti-loosening washer 6 is much lower than that of the wheel hub, when the anti-loosening washer 6 comes into contact with the wheel hub and wears due to friction, more wear occurs on the anti-loosening washer 6, thus protecting the wheel hub. When the anti-loosening washer 6 is worn too badly and needs to be replaced, the screw 14 on the mounting bracket 13 is removed from the screw groove 15. Unscrew the screw, and then the mounting box 8 can be removed from the sector clamp 2. The mounting box 8 drives the screw 10, which in turn drives the metal liner 7 and the anti-loosening washer 6 to be removed from the anti-loosening washer mounting groove 5 through the connecting groove 11 and the connecting plate 12. Then, scrape the remaining anti-loosening washer 6 off the metal liner 7 and wash off the residual adhesive with an adhesive remover. Then, use glue to stick the new anti-loosening washer 6 onto the metal liner 7. Then, insert the anti-loosening washer 6 and the metal liner 7 back into the anti-loosening washer mounting groove 5, and screw the screw 14 back into the screw groove 15 so that the mounting box 8 is reinstalled on the sector clamp 2, thus realizing the replacement of the anti-loosening washer 6.

[0030] 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 predetermined core structure, comprising: The base plate (1) is characterized in that: a fan-shaped clamping plate (2) is slidably connected to the surface of the base plate (1), the fan-shaped clamping plate (2) is provided with a first clamping position (3) and a second clamping position (4), a push plate (17) is movably inserted into the base plate (1), a slider (16) is fixed on the fan-shaped clamping plate (2), an inclined slider (18) is fixed on the slider (16), an inclined groove (19) is provided on the push plate (17), and the inclined slider (18) is movably inserted into the inclined groove (19).

2. The predetermined core structure according to claim 1, characterized in that: Both the first clamping position (3) and the second clamping position (4) are fan-shaped groove structures, and the diameter of the first clamping position (3) is larger than that of the second clamping position (4).

3. The predetermined core structure according to claim 1, characterized in that: The surface of the fan-shaped clamp (2) is provided with an anti-loosening gasket mounting groove (5), an anti-loosening gasket (6) is movably inserted into the anti-loosening gasket mounting groove (5), and a metal liner (7) is fixed to one end of the anti-loosening gasket (6) that extends into the anti-loosening gasket mounting groove (5).

4. The predetermined core structure according to claim 3, characterized in that: An installation box (8) is movably mounted on the surface of the fan-shaped clamp (2). A screw hole (9) is provided on the installation box (8). A screw rod (10) is rotatably connected in the screw hole (9). An internal thread is provided on the hole wall of the screw hole (9). An external thread is provided on the rod body of the screw rod (10). The internal thread of the screw hole (9) and the external thread of the screw rod (10) are engaged.

5. A predetermined core structure according to claim 4, characterized in that: A connecting groove (11) is provided on the surface of the metal liner (7), and a connecting plate (12) is fixed on the rod of the screw (10). The connecting plate (12) is rotatably connected in the connecting groove (11).

6. A predetermined core structure according to claim 4, characterized in that: The mounting box (8) is fixed with a mounting base (13), and a screw (14) is rotatably connected to the mounting base (13). A screw groove (15) is opened on the surface of the fan-shaped clamp (2). An external thread is opened on the shank of the screw (14), and an internal thread is opened in the groove of the screw groove (15). The external thread of the screw (14) and the internal thread of the screw groove (15) are engaged.

7. A three-sequence mixing clamp, characterized in that: Includes the predetermined core structure as described in any one of claims 1-6.

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