Outer circle positioning tool for sliding forklift

Abstract

The utility model relates to the field of machining equipment, in particular to an outer circle positioning tool for a sliding forklift. The clamping device comprises a rack, a spindle box, a three-jaw chuck 12 and two arc-shaped clamping plates, the clamping plates are matched with fork lugs of a sliding fork through inserting columns, the end of the sliding fork is fixed through an ejector rod, and stable clamping of the sliding fork is achieved; a base, a connecting rod, a guide column and a reset spring are arranged in the arc-shaped plate, so that automatic reset of the clamping plates after opposite movement is ensured; in addition, the tool is further provided with a guide rod, a chamfer, anti-skid lines and a detachable structure, and the adaptability and operation convenience of the tool are improved. The purpose of quickly and accurately fixing the sliding fork is achieved, and the machining efficiency and precision are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical processing equipment, in particular to a sliding fork outer circle positioning tool. BACKGROUND

[0002] The sliding fork plays a key role in the automobile transmission system, its main function is to adjust the total length of the transmission shaft during vehicle operation, to ensure that the relative position change between the drive axle and the transmission will not cause motion interference. With the development of the automobile industry, the performance requirements of the transmission system are becoming higher and higher, which not only involves the power transmission efficiency, but also relates to the overall stability and driving comfort of the vehicle. In order to meet these needs, manufacturers are constantly optimizing the design and manufacturing process of the sliding fork to improve the reliability and service life of the product. In the existing technical means, a variety of methods are usually used to fix the sliding fork in order to process it. For example, using a traditional three-jaw chuck 12 to directly clamp the rod part of the sliding fork, or fixing the sliding fork on the lathe or other processing equipment through a specially designed clamp. In addition, there are also some complex multi-point positioning devices that ensure the stable fixation of the sliding fork through multiple contact points. Although these methods can solve the problem to a certain extent, there are still some shortcomings in actual application. The commonly used method can realize the basic fixing function, but due to the irregular shape of the sliding fork, especially the special structure of the fork ear part, it is difficult for the traditional clamp to effectively achieve precise positioning and fixation. In this case, it is easy to cause the sliding fork to shake or deviate during processing, thereby affecting the processing precision and product quality. Therefore, it is particularly necessary to develop a new type of positioning tool that can effectively solve this problem. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to overcome the above technical problems, and provide a sliding fork outer circle positioning tool

[0004] The utility model provides a sliding fork lathe outer circle positioning frock, including frame, be provided with main shaft box on the frame, be provided with three jaw chuck 12 on the main shaft box, be provided with two arc clamping plates on three jaw chuck 12, and clamping plate is set up to buckle, and the outer side wall of clamping plate is respectively with the jaw of three jaw chuck 12 butt joint, and the inner wall of clamping plate is fixedly connected with the plug -in column, and the plug -in column is used for plugging in the fork ear, and the top rod is set up in the opposite side of frame and three jaw chuck 12, and the top rod is used for the fixed end of the rod part and can follow the rotation of sliding fork.By adopting the technical scheme, when a user uses it, the fork ear is inserted into the V-shaped groove, the fork ear is conveniently pre-positioned, the insertion column is conveniently inserted into the fork ear, and then the sliding fork is conveniently fixed. BRIEF DESCRIPTION OF DRAWINGS

[0005] Fig. 1 is a schematic diagram of the overall mechanism of the embodiment of the present application;

[0006] Fig. 2 is an exploded view of the three-jaw chuck 12 and the clamping plate and the sliding fork;

[0007] Fig. 3 is a sectional view of the three-jaw chuck 12 and the clamping plate and the sliding fork.

[0008] The drawings show that: 1, rack; 11, spindle box; 12, three-jaw chuck; 121, jaw; 122, non-slip pattern; 123, accommodation groove; 2, base; 21, clamping plate; 22, V-shaped groove; 23, clamping plate; 231, guide groove; 232, sliding groove; 24, insertion column; 241, chamfer; 25, connecting rod; 251, guide column; 252, guide rod; 253, return spring; 26, positioning rod; 261, clamping rod; 3, top rod. DETAILED DESCRIPTION

[0009] The drawings will be described below Figs. 1-3 The technical scheme of the embodiment of the present application is described clearly and completely, and the described embodiment is only one possible technical implementation of the present application, not all possible implementations. Those skilled in the art can combine the embodiments of the present application without creative labor to obtain other embodiments, and these embodiments are also within the protection scope of the present application. The sliding fork truck outer circle positioning tool provided by the embodiment of the present application comprises a rack 1, the rack 1 is provided with a spindle box 11, the spindle box 11 is provided with a three-jaw chuck 12, the three-jaw chuck 12 is connected with a base 2, the base 2 is fixedly connected with a clamping plate 21, the clamping plate 21 is provided with a V-shaped groove 22, the V-shaped groove 22 is used for limiting the fork ear, the base 2 is provided with two arc-shaped clamping plates 23, the clamping plates 23 are oppositely buckled, the outer side walls of the clamping plates 23 are respectively abutted with the jaws 121 of the three-jaw chuck 12, the inner walls of the clamping plates 23 are symmetrically fixedly connected with insertion columns 24, the insertion columns 24 are used for being inserted into the fork ear, the rack 1 is provided with a top rod 3 on the side opposite to the three-jaw chuck 12, the top rod 3 is used for fixing the end part of the rod part and can rotate with the sliding fork.

[0010] Specifically, the three-jaw chuck 12 is fixed at the front end of the spindle box 11, and its three clamping jaws 121 are evenly distributed and can firmly clamp workpieces of various diameters. The arc-shaped clamping plate 23 is semicircular and is made of two identical arc-shaped steel plates, and the side edges of each arc-shaped steel plate are tightly fitted with the clamping jaws 121 of the three-jaw chuck 12. The end of the insertion column 24 is chamfered 241 to form a gradual wedge structure. Such a design not only helps the insertion column 24 to more easily enter the fork ear of the sliding fork, but also plays a certain guiding role during the insertion process, avoiding damage caused by improper angles.

[0011] In the process of machining the transmission shaft, first, the fork ear of the sliding fork is extended into the arc-shaped clamping plate 23, then the three-jaw chuck 12 is driven to move towards the center of the circle, the clamping jaws 121 gradually press the arc-shaped clamping plate 23 to move towards each other, at this time the insertion column 24 will automatically insert into the fork ear of the sliding fork. Next, adjust the position of the top rod 3 so that its end abuts against the end face of the rod part of the sliding fork, and complete the preliminary fixation. Finally, start the machine tool, the three-jaw chuck 12 drives the sliding fork to rotate together, and the top rod 3 rotates synchronously with the sliding fork, ensuring that the sliding fork remains stable during the entire machining process.

[0012] The base 2 is fixedly connected with a vertical connecting rod 25, and the connecting rod 25 is slidably connected with a guide column 251, the two ends of the guide column 251 are inserted into the guide grooves 231 on the two sides of the arc-shaped clamping plate 23. The guide column 251 is externally sleeved with a return spring 253, when the three-jaw chuck 12 drives the arc-shaped clamping plate 23 to move towards each other, the arc-shaped clamping plate 23 will be compressed, causing the return spring 253 to be compressed. After the machining is completed, the three-jaw chuck 12 is loosened, and the elastic force of the return spring 253 will cause the arc-shaped clamping plate 23 to rapidly open outward, thereby facilitating the removal of the sliding fork.

[0013] In addition, the connecting rod 25 is fixed with a parallel guide rod 252 on each side, and the end of the arc-shaped clamping plate 23 is provided with a corresponding sliding groove 232, the guide rod 252 can freely slide in the sliding groove 232, and plays a limiting and guiding role, ensuring that the arc-shaped clamping plate 23 always maintains a straight trajectory during movement, avoiding tilting or misalignment.

[0014] Each clamping jaw 121 of the three-jaw chuck 12 is engraved with dense transverse or diagonal anti-skid lines 122 on the side close to the arc-shaped clamping plate 23. These anti-skid lines 122 can significantly increase the roughness of the contact surface between the clamping jaw 121 and the arc-shaped clamping plate 23, thereby providing greater static friction during clamping, preventing the arc-shaped clamping plate 23 from sliding or falling off when subjected to greater force. In addition, the design of the anti-skid lines 122 also helps to disperse local pressure and reduce the risk of single-point stress concentration, protecting the workpiece from damage.

[0015] The arc-shaped clamping plate 23 and the three-jaw chuck 12 are detachably connected, that is, a positioning rod 26 is rotationally connected on the base 2, a nut is threadedly connected on the positioning rod 26, and a clamping rod 261 is fixed on the end of the positioning rod 26. A displacement slot 123 is formed in the three-jaw chuck 12 at a position corresponding to the jaw 121, and the clamping rod 261 can pass through the displacement slot 123 and then be rotated by 90 degrees to be locked. In this way, when the sliding fork of different sizes needs to be replaced, the nut is only loosened, and the clamping rod 261 is pulled out, so that the appropriate arc-shaped clamping plate 23 can be conveniently and quickly replaced.

[0016] The implementation principle of the embodiment is that the effective fixing of the sliding fork is realized by designing the unique structure of the arc-shaped clamping plate 23 and the plug-in column 24. Especially when the irregular-shaped workpiece is machined, the traditional clamp often cannot achieve the ideal effect, but the arc-shaped clamping plate 23 in the embodiment can flexibly adapt to the sliding fork of different sizes, and the design of the plug-in column 24 further improves the stability of the fixing. In addition, the setting of the ejector rod 3 not only plays an auxiliary fixing role, but also can prevent the sliding fork from deviating or vibrating when rotating at high speed, greatly improving the machining precision and product quality. The above are the preferred embodiments of the application, and are not limited to the protection scope of the application, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A sliding fork truck outer circle positioning tool, characterized in that: The utility model provides a three -jaw chuck, including frame (1), be provided with main shaft box (11) on frame (1), be provided with two arc clamping plates (23) on three -jaw chuck (12), clamping plate (23) is provided with, clamping plate (23) the outside wall is respectively with the jaw (121) of three -jaw chuck (12) abutment, the inner wall of clamping plate (23) is fixedly connected with the plug -in column (24), and the plug -in column (24) is used for inserting in fork ear, and frame (1) is provided with the top rod (3) on three -jaw chuck (12) opposite side, and the top rod (3) is used for the fixed end of lever portion and can follow sliding fork rotation.

2. The slide fork truck outer circle positioning tool according to claim 1, wherein: The clamping plate (23) is provided with a base (2), the base (2) is fixedly connected with a connecting rod (25), the connecting rod (25) is slidably connected with a guide column (251), both ends of the clamping plate (23) are provided with a guide groove (231), both ends of the guide column (251) are inserted into the guide groove (231), and the guide column (251) is provided with a return spring (253) outside.

3. The slide fork truck outer circle positioning tool according to claim 2, wherein: The connecting rod (25) is fixedly connected with a guide rod (252) on both sides, and the end of the arc clamping plate (23) is provided with a sliding groove (232) for the insertion of the guide rod (252).

4. The slide fork truck outer circle positioning tool of claim 1, wherein: The end of the plug-in column (24) is provided with a chamfer (241).

5. The slide fork truck outer circle positioning tool of claim 1, wherein: The side of the jaw (121) close to the clamping plate (23) is provided with an anti-skid line (122).

6. The slide fork truck outer circle positioning tool of claim 2, wherein: The clamping plate (23) and the three -jaw chuck (12) are detachably connected.

7. The slide fork truck outer circle positioning tool of claim 6, wherein: The base (2) is rotatably connected with a positioning rod (26), the positioning rod (26) is threadedly connected with a nut, the end of the positioning rod (26) is fixedly connected with a clamping rod (261), the three -jaw chuck (12) is provided with a slot (123) corresponding to the jaw (121), and the clamping rod (261) can pass through the slot (123) and rotate by 90 degrees to fix the clamping rod (261) and the three -jaw chuck (12).

8. The slide fork truck outer circle positioning tool of claim 7, wherein: The base (2) is fixedly connected with a clamping plate (21), the clamping plate (21) is provided with a V-shaped groove (22), and the V-shaped groove (22) is used for inserting the fork ear.

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