A yoke shaft turning and milling clamp

Abstract

The utility model relates to the technical field of shifting fork shaft milling, and specifically discloses a shifting fork shaft turning and milling clamp, which comprises a bottom plate, a positioning abutment fixed to one side of the bottom plate, a movable abutment slidingly connected to the other side of the bottom plate, a driving structure arranged on the bottom plate and used for moving the movable abutment, two sets of clamping structures arranged on the inner sides of the positioning abutment and the movable abutment, a clamping abutment and a sliding abutment fixed to the outer side of the clamping abutment, sliding grooves formed in the two sides of the positioning abutment and the movable abutment and used for sliding the sliding abutment, fasteners arranged on the positioning abutment and the movable abutment and used for fastening the sliding abutment in the sliding grooves, and a tool travel groove formed in the top surface of the clamping abutment and aligned with the groove of the shifting fork shaft, so that the problem that the conventional shifting fork shaft milling clamp can only process the groove on the shifting fork shaft with a specific spacing is solved.

Description

Technical Field

[0001] This application relates to the field of shift fork shaft milling technology, and specifically discloses a shift fork shaft milling fixture. Background Technology

[0002] The shift fork shaft is an important component of the transmission shifting mechanism and is controlled by the shift lever. In use, the shift fork shaft works in conjunction with the shift fork. In existing technology, the shift fork shaft requires two or three grooves to be machined on it, and during the machining process, it needs to be positioned and clamped.

[0003] In the prior art, such as the milling fixture for a shift fork shaft with Chinese Patent Publication No. CN212704600U, there is a base plate, a positioning block fixed on the base plate, a clamping block mounted on the base plate, and a pushing mechanism for driving the clamping block to slide. Limiting slide rails are fixed on both sides of the clamping block. A positioning pin is fixed between the positioning block and the clamping block. A positioning bead is fixed on the top of the positioning pin. The positioning bead matches the annular groove of the shift fork shaft. The top of both the positioning block and the clamping block has a feed groove that matches the number of grooves in the shift fork shaft.

[0004] The aforementioned milling fixture for shift forks, equipped with locating pins and locating balls on the locating pins, can position the shift fork shaft in the axial direction. However, the distance between the grooves of each shift fork shaft is not the same. The aforementioned feed groove is located on the top of the locating block and the feed block, and can only process grooves with a specific distance, making it unsuitable for different shift fork shafts and thus quite limited.

[0005] This invention provides a milling fixture for a shift fork shaft to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to solve the problem that traditional shift fork shaft milling fixtures can only process grooves on shift fork shafts with a specific spacing.

[0007] To achieve the above objectives, the basic solution of this utility model provides a milling fixture for a shift fork shaft, including a base plate, a positioning abutment fixed to one side of the base plate, a movable abutment slidably connected to the other side of the base plate, and a drive structure disposed on the base plate for moving the movable abutment. The positioning abutment and the movable abutment are each provided with two sets of clamping structures on their inner sides. The clamping structures include clamping platforms and slides fixed to the outer sides of the clamping platforms. The positioning abutment and the movable abutment are respectively provided with inwardly opening grooves for the slides to slide into. The positioning abutment and the movable abutment are also provided with fasteners for fastening the slides in the grooves. The top surface of the clamping platform is provided with a tool groove that can be aligned with the groove of the shift fork shaft. The inner side of the clamping platform is formed with an inner pad block for pressing against the shift fork shaft.

[0008] Furthermore, the vertical cross-sectional shape of the tool groove is conical.

[0009] Furthermore, the top surfaces of the positioning platform and the movable platform are each provided with a through groove that is vertically connected to the slide groove. The fastener includes a screw and a circular plate fixed to one end of the screw. A T-shaped groove is provided between the two sides of the slide, which is connected to the slide groove and allows the circular plate to slide inside. The top of the screw passes through the slide groove and the through groove and is screwed with a nut.

[0010] Furthermore, it also includes a placement platform set on the base plate for placing the shift fork shaft to be processed, and the placement platform has a placement groove.

[0011] Furthermore, the vertical cross-sectional shape of the placement groove is conical.

[0012] Furthermore, the base plate has a waste groove for discharging milling waste.

[0013] Furthermore, the base plate below the movable platform has a movable groove, and the driving structure is a screw-slider pair located in the movable groove and used to drive the movable platform to slide. One end of the screw of the screw-slider pair passes through the base plate and is fixedly connected to a handle.

[0014] The principle and effect of this solution are as follows:

[0015] Compared with the prior art, this utility model is equipped with an adjustable clamping structure. The groove on the shift fork shaft to be milled is processed by the adjustable clamping structure. The position of the clamping table is adjusted by sliding the slide table to realize the positioning of the groove to be processed. It can mill the groove of shift fork shafts of various specifications, and solves the problem that the traditional shift fork shaft milling fixture can only process the groove on the shift fork shaft with a specific spacing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A top view of a shift fork shaft milling fixture according to an embodiment of this application is shown;

[0018] Figure 2 The image shows a front view of a shift fork shaft milling fixture according to an embodiment of this application. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] The reference numerals in the accompanying drawings of the instruction manual include: base plate 1, fixed support platform 2, movable support platform 3, handle 4, lead screw 5, clamping platform 6, slide table 7, tool groove 8, screw 9, nut 10, round plate 11, handle 12, placement platform 13, inner pad block 14.

[0021] A shift fork shaft milling fixture, implementing, for example Figure 1 and Figure 2 As shown:

[0022] It includes a base plate 1, a positioning platform fixedly installed on the right side of the base plate 1, a movable platform 3 installed on the left side of the base plate 1 and slidable, and a drive structure installed on the base plate 1 for moving the movable platform 3.

[0023] The base plate 1 below the movable platform 3 has a movable groove. The driving structure is a lead screw 5 slider pair installed in the movable groove. Limiting plates are formed on the inner walls of both sides of the movable groove along the sliding direction. The top surface of the slider is attached to and fixed to the bottom surface of the movable platform 3. Limiting grooves are opened on both sides of the slider to allow the limiting plates to slide inside. A handle 4 is fixedly installed at the left end of the lead screw 5 through the base plate 1.

[0024] In this embodiment, two sets of clamping structures are installed on the inner sides of both the positioning platform and the movable platform 3. The clamping structure includes a clamping platform 6 and a slide 7 integrally formed on the outer side of the clamping platform 6. An inner pad 14 is formed on the inner side of the clamping platform 6 for clamping the shift fork shaft.

[0025] Both the positioning platform and the movable platform 3 have inwardly extending grooves on both sides, allowing the slide table 7 to slide into and within these grooves. Simultaneously, the top surfaces of both the positioning platform and the movable platform 3 have through grooves vertically connected to the slide grooves. A T-shaped groove connecting the two sides of the slide table 7 to the slide grooves is also provided. Fasteners for securing the slide table 7 within the slide grooves are installed on both the positioning platform and the movable platform 3. These fasteners include a screw 9 and a circular plate 11 fixed to the bottom of the screw 9. During installation, the circular plate 11 is inserted into the T-shaped groove and can slide within it. The top of the screw 9 passes through the slide groove and the through groove and is screwed with a nut 10.

[0026] In this embodiment, the top surface of the clamping platform 6 is also provided with a tool groove 8 that can be aligned with the groove of the shift fork shaft. Simultaneously, a placement platform 13 for placing the shift fork shaft to be processed can be installed on the base plate 1. The placement platform 13 has a placement groove with a conical vertical cross-sectional shape, and the placement platform 13 can be clamped by the clamping platform 6. Furthermore, a positioning structure is installed on the placement groove, which consists of existing positioning pins and positioning beads.

[0027] like Figure 1 As shown, a waste groove is also provided on the base plate 1 to discharge milling waste.

[0028] When using this utility model, first install the placement table 13 on the base plate 1 and insert the shift fork shaft to be milled. Adjust the position of the clamping table 6 according to the position of the groove to be processed on the shift fork shaft so that the tool groove 8 on the clamping table 6 is aligned with the position of the groove to be processed.

[0029] Then, by turning the handle 4, the movable platform 3 is moved toward the fixed platform 2 until it abuts against the placement platform 13 and is pressed against the shift fork shaft by the inner pad 14.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A milling fixture for a shift fork shaft, characterized in that, The device includes a base plate, a positioning platform fixed to one side of the base plate, a movable platform slidably connected to the other side of the base plate, and a drive structure on the base plate for moving the movable platform. Both the positioning platform and the movable platform have two sets of clamping structures on their inner sides. The clamping structures include clamping platforms and slides fixed to the outer sides of the clamping platforms. The positioning platform and the movable platform have inwardly opened grooves on both sides for the slides to slide into. The positioning platform and the movable platform are also provided with fasteners for fastening the slides in the grooves. The top surface of the clamping platform has a cutting groove that can be aligned with the groove of the shift fork shaft. The inner side of the clamping platform is formed with an inner pad block for pressing against the shift fork shaft.

2. The milling fixture for a shift fork shaft according to claim 1, characterized in that, The vertical cross-sectional shape of the feed groove is conical.

3. The milling fixture for a shift fork shaft according to claim 1, characterized in that, The top surfaces of the positioning platform and the movable platform are each provided with a through groove that is vertically connected to the slide groove. The fasteners include a screw and a circular plate fixed to one end of the screw. A T-shaped groove is provided between the two sides of the slide, which is connected to the slide groove and allows the circular plate to slide inside. The top of the screw passes through the slide groove and the through groove and is screwed with a nut.

4. A milling fixture for a shift fork shaft according to claim 1, characterized in that, It also includes a placement platform set on the base plate for placing the shift fork shaft to be processed. The placement platform has a placement groove, and the placement groove has a positioning structure for abutting the shift fork shaft with an annular groove.

5. A milling fixture for a shift fork shaft according to claim 4, characterized in that, The vertical cross-sectional shape of the placement groove is conical.

6. A milling fixture for a shift fork shaft according to claim 1, characterized in that, The base plate has a waste groove for discharging milling waste.

7. A milling fixture for a shift fork shaft according to claim 1, characterized in that, The base plate below the movable platform has a movable groove. The driving structure is a screw-slider pair located in the movable groove and used to drive the movable platform to slide. One end of the screw of the screw-slider pair passes through the base plate and is fixedly connected to a handle.

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