Positioning tooling for front fork tube

Abstract

The invention discloses a positioning tooling for a front fork tube. Conical holes of which the apertures are gradually reduced from the outside to the inside are respectively arranged at the front part and the rear part of a main shaft through hole of a main shaft; a guide pipe is sleeved in the main shaft through hole; a main shaft front conical sleeve and a main shaft rear conical sleeve are respectively arranged in the inner walls of the conical holes at the front part and the rear part of the main shaft through hole; the guide pipe is limited in the main shaft through hole by using the main shaft front conical sleeve and the main shaft rear conical sleeve; an ejector rod is arranged at the rear part in the guide pipe; the rear part of the ejector rod extends out of the guide pipe andis fixed with the main shaft rear conical sleeve; a positioning end socket is sleeved outside the front part of the ejector rod; the ejector rod is in threaded connection with a locking nut; the rearend of the positioning end socket is supported against the locking nut; an annular limiting step is arranged on the wall of an inner hole of the positioning end socket; and the front end of the positioning end socket is supported against the rear side wall of the limiting step. According to the positioning tooling disclosed by the invention, the problems of axial positioning and radial positioning of the front fork tube during processing are effectively solved, and the processing precision is improved.

Description

technical field [0001] The invention relates to the technical field of fixtures, in particular to a positioning tool for processing front fork tubes. Background technique [0002] The front fork tube is an important component of the motorcycle shock absorber. In the past, the two ends of the slender rod parts such as the front fork tube were processed. The simple method was to use a three-jaw chuck to clamp one end of the workpiece on a lathe, and then process it. , this processing method has the following disadvantages: one is that due to the short clamping part and the long length of the workpiece, the central aperture of the spindle is larger than the outer diameter of the workpiece, and there is a problem that the tail of the workpiece will fall downward due to the influence of gravity, and the workpiece rotates during processing. Centrifugal force leads to unstable clamping and affects processing quality. At the same time, due to the need for large clamping force, it i...

AI Technical Summary

Problems solved by technology

[0002] The front fork tube is an important component of the motorcycle shock absorber. In the past, the two ends of the slender rod parts such as the front fork tube were processed. The simple method was to use a three-jaw chuck to clamp one end of the workpiece on a lathe, and then process it. , this processing method has the following disadvantages: one is that due to the short clamping part and the long length of the workpiece, the central aperture of the spindle is larger than the outer diameter of the workpiece, and there is a problem that the tail of the workpiece will fall downward due to the influence of gravity, and the workpiece rotates during processing. Centrifugal force leads to unstable clamping and affects processing quality

At the same time, due to the need for large clamping force, it is easy to cause deformation of the three-jaw chuck during mass production, which further affects the clamping stability; the other is that the spindle hole of the general lathe is a through hole, and the axial positioning of the workpiece is generally blocked. The method of using the head, the plug is fixed in the spindle hole, which cannot meet the requirements of the axial positioning length of various workpieces, and it is very inconvenient to replace

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