CN106624903A - Special fixture for processing shift-fork holes - Google Patents

Abstract

The invention relates to a special clamp for shifting fork hole processing, which includes a clamp body, on which a screw clamping mechanism, a tool guiding mechanism and a positioning mechanism are arranged; the positioning mechanism consists of a positioning plate, a stop pin, a floating support block, It consists of a floating support sleeve and a V-shaped block; the screw clamping mechanism is composed of a pressure plate, a nut, a guide sleeve and a return spring; the tool guiding mechanism is composed of a drill film plate and a quick-change drill sleeve; the quick-change drill sleeve is assembled on the drill film The plate is locked by screws; the drilling film plate is fixed on the clamp body by the positioning pin and the second bolt, the V-shaped block is fixed on the column of the clamp body by the first bolt, and the positioning plate is fixed on the clamp body by bolts. The board realizes micro-movement in the horizontal plane through the floating support block and the floating support sleeve.

Description

A special jig for processing shift fork holes

technical field

The invention relates to a fixture, more specifically, to a special fixture for machining shift fork holes.

Background technique

A machine tool fixture is a device on a machine tool used to clamp a workpiece and guide a tool. Refers to a fixture specially designed for a certain process of a certain workpiece. It is characterized by compact structure, fast, convenient and labor-saving operation, and can ensure high processing accuracy and production efficiency. Fixture installation is used to accurately determine the mutual position of the workpiece, the machine tool, and the tool. The position accuracy of the workpiece is guaranteed by the fixture and is not affected by the technical level of the workers. The machining accuracy is high and stable.

Contents of the invention

The object of the present invention is to overcome the deficiencies in the prior art, and provide a special jig for machining shift fork holes with high reliability, which can ensure machining accuracy and reduce labor intensity of workers.

The object of the present invention is achieved through the following technical solutions: the special fixture for shifting fork hole processing includes a clamp body, and the clamp body is provided with a screw clamping mechanism, a tool guide mechanism and a positioning mechanism; the positioning mechanism consists of a positioning plate, The stop pin, floating support block, floating support sleeve and V-shaped block are composed; the screw clamping mechanism is composed of a pressure plate, nut, guide sleeve and return spring; the tool guiding mechanism is composed of a drill film plate and a quick-change drill sleeve; The replacement drill set is assembled on the drill film plate and locked by screws; the drill film plate is fixed on the clamp body through the positioning pin and the second bolt, the V-shaped block is fixed on the column of the clamp body through the first bolt, and the positioning plate is fixed by bolts On the clamp body, the positioning plate realizes micro-movement in the horizontal plane through the floating support block and the floating support sleeve.

The beneficial effect of the present invention is: this patent adopts screw clamping mechanism, because screw thread has self-locking effect, clamping is reliable, easy to operate, can reduce the labor intensity of worker. At the same time, the V-shaped block is used for positioning, and the positioning accuracy is high, which can meet the requirements of the processing quality of the parts.

Description of drawings

Fig. 1 is the front view of this patent.

FIG. 2 is a top view of FIG. 1 .

Explanation of reference signs: clamp body 1, positioning plate 2, retaining pin 3, V-shaped block 4, first bolt 5, second bolt 6, drill film plate 7, screw 8, quick-change drill sleeve 9, pressure plate 10, nut 11. Guide sleeve 12, return spring 13, floating support block 14, floating support sleeve 15, shift fork 16.

detailed description

The present invention will be further described below in conjunction with the examples. The description of the following examples is provided only to aid the understanding of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

As shown in Figures 1 to 2, the special jig for processing the shift fork hole of the present embodiment includes a clamp body 1, and the clamp body 1 is provided with a screw clamping mechanism, a tool guide mechanism and a positioning mechanism; the positioning mechanism consists of The positioning plate 2, the stop pin 3, the floating support block 14, the floating support sleeve 15 and the V-shaped block 4 are composed; the screw clamping mechanism is composed of a pressing plate 10, a nut 11, a guide sleeve 12 and a return spring 13; the tool guiding mechanism It is composed of a drill film plate 7 and a quick-change drill sleeve 9; the quick-change drill sleeve 9 is assembled on the drill film plate 7 and locked by screws 8; the drill film plate 7 is fixed on the clamp body 1 by positioning pins and second bolts 6 , the V-shaped block 4 is fixed on the column of the clamp body 1 through the first bolt 5, the positioning plate 2 is fixed on the clamp body 1 through bolts, and the positioning plate 2 realizes micro-movement in the horizontal plane through the floating support block 14 and the floating support sleeve 15 .

This fixture is mainly used for processing shift forks on vertical drilling machines hole. workpiece with Cylindrical and end face and the outside of yoke are used as positioning datum, realize positioning with V-shaped block 5, positioning plate 2, floating support block 14. The workpiece is clamped by a vertical hook-shaped pressing plate 10. First of all, in the processing of parts, it is necessary to realize that the parts occupy the correct position in the fixture and ensure the positioning accuracy, so as to ensure the processing accuracy of the parts. The workpiece is installed and positioned on the fixture through the V-shaped block 4 and the positioning plate 2. This positioning method limits the five degrees of freedom of the workpiece and fully meets the positioning requirements of the workpiece. At the same time, through the positioning error analysis and calculation, it meets the machining accuracy requirements of the part; Secondly, it is necessary to clamp the parts on the fixture to ensure that the correct position occupied by the parts does not change during the processing, but it should be noted that the position of the parts cannot be changed during the clamping process, otherwise the meaning of positioning will be lost. The power mechanism is a screw clamping mechanism. When working, use a wrench to tighten the nut 11, push the pressure plate 10 to clamp the workpiece, loosen the nut 11 after the work is completed, push the pressure plate 10 away through the return spring 13, and the pressure plate 10 moves in the guide sleeve 12. At this time, the workpiece can be loosened and the workpiece can be disassembled. At the same time, in this positioning mechanism, what the positioning plate 2 adopted is a floating mechanism, in order to eliminate the over-positioning produced with the V-shaped block 4 .

Claims (1)

1. a kind of shift fork hole machined special fixture, it is characterised in that：Including clamp body (1), the clamp body (1) is provided with spiral Clamp system, cutter guiding mechanism and detent mechanism；The detent mechanism is by location-plate (2), backing pin (3), float support block (14), float support set (15) and V-block (4) are constituted；Screw clamping mechanism is by pressing plate (10), nut (11), fairlead (12) With return spring (13) composition；The cutter guiding mechanism is by boring lamina membranacea (7) and Quick-change drill bush (9) is constituted；Quick-change drill bush (9) is filled Fit on brill lamina membranacea (7), locked by screw (8)；Bore lamina membranacea (7) and clamp body is fixed on by alignment pin and the second bolt (6) (1) on, V-block (4) is fixed on clamp body (1) column by the first bolt (5), and location-plate (2) is bolted on folder Specifically on (1), while location-plate (2) realizes the fine motion in horizontal plane by float support block (14) and float support set (15).