Rack piston internal spiral rollaway nest clamp

Abstract

The invention discloses a rack piston internal spiral rollaway nest clamp, which comprises a clamp body, a thin-wall sleeve, liquid plastic, an adjusting bolt, a toothed positioning block and a fixing pin, wherein an inner hole is formed in the end surface of one side of the clamp body; the thin-wall sleeve matched with the inner hole is arranged in the inner hole; an annular groove and a groove are formed in the surface of the thin-wall sleeve; the annular groove is communicated with the groove; an injection molding channel is formed at the upper end of the clamp body; the injection molding channel is communicated with the annular groove and the groove; the liquid plastic flows into the annular groove and the groove of the thin-wall sleeve through the injection molding channel; the adjusting bolt is arranged at the opening of the injection molding channel; the toothed positioning block is also arranged in the inner hole; and the clamp body, the thin-wall sleeve and the toothed positioning block are fixed through the fixing pin. The rack piston internal spiral rollaway nest clamp has high centering accuracy, is simple and convenient to operate, has a long service life, improves the processing efficiency and the processing quality, reduces the processing cost, and is applicable to batch processing.

Description

technical field [0001] The invention relates to a fixture, in particular to a fixture for processing an inner spiral raceway of a rack piston. Background technique [0002] The steering gear is an important part of the car, which plays a vital role in the car's handling performance and safe driving. figure 1 The rack piston shown is one of the key parts in the steering gear. The rack piston is a part that integrates the nut and rack in the steering mechanism and acts as a hydraulic piston in the steering gear housing. The precision requirements of the rack piston are very high. It requires that the built-in ball on the internal thread raceway has strict requirements on the moving distance of the rack every time a certain angle is turned. At the same time, the coaxiality of the outer circle of the rack piston must be within a certain range, otherwise The steering mechanism will not work, thus affecting driving safety. The existing processing method for the internal thread r...

AI Technical Summary

Problems solved by technology

The precision requirements of the rack piston are very high. It requires that the built-in ball on the internal thread raceway has strict requirements on the moving distance of the rack every time a certain angle is turned. At the same time, the coaxiality of the outer circle of the rack piston must be within a certain range, otherwise The steering mechanism will not work, which will affect driving safety

The existing processing method for the internal thread raceway of the rack piston has complicated operation, high processing cost, poor precision of the processed workpiece, and low processing quality and processing efficiency.

Images