Impeller production clamp for passenger car turbocharger

Abstract

The invention discloses an impeller production clamp for a passenger car turbocharger. The impeller production clamp comprises a linear optical shaft and a linear bearing arranged at the front end ofthe linear optical shaft in a sleeving mode. A compression spring and a spring check ring are further arranged on the linear optical shaft and at the rear end of the linear bearing; a circle of boss is further arranged at the front end of the linear bearing; a flange plate is arranged outside the linear bearing in a sleeving mode and clamped to the boss; an A datum plane positioning plate locatedat the front end of the linear optical shaft and perpendicular to the axis direction of the linear optical shaft is further supported on the boss through supports; and a conical positioning hole is further formed in the front end of the linear optical shaft, and the conicity of the conical positioning hole is matched with the conicity of a B datum plane. The parallel deviation is controlled through a front positioning mode, and the bounce mode is controlled through the linear optical shaft with the rear conical hole; the clamp manufacturing cost is reduced, clamping precision is high, and machined products are stable in quality and good in consistency; and full inspection is not needed, the spot check period is prolonged, and the production period is greatly shortened.

Description

technical field [0001] The invention relates to a production jig for an impeller of a passenger car turbocharger. Background technique [0002] For the impeller, the key component in the passenger car turbocharger, this component has strict requirements in terms of material and machining accuracy. Its structure is as follows: figure 1 shown. The part marked in the figure is the surface to be machined (the machined surface is a taper hole), and the rest is the casting blank surface. There are two places for shape and position tolerance requirements on the machined surface and the non-machined surface, one is parallel difference, and the other is runout. They are all for the non-processed surface, which is very difficult to guarantee. Among the impeller parts, the non-processed surface is figure 1 The A datum plane and the B datum plane shown in , where the A datum plane is a vertical plane, and the B datum plane is a conical plane. In the processing at home and abroad, it ...

AI Technical Summary

Problems solved by technology

In the processing at home and abroad, it is difficult to guarantee the shape and position tolerance of such parts

In the prior art, when machining the taper hole in the middle of the impeller close to the reference plane A, a fixture is usually used to clamp the impeller part from a certain position and then process the taper hole. This clamping method itself is very one-sided, making it very difficult It is difficult to ensure that the axis of the impeller parts does not shake during processing, so the pass rate of processing is not high, and because the high pass rate cannot be guaranteed, the follow-up inspection workload is very large, and the inspection methods are all carried out on three-coordinate machines, so it is time-consuming and laborious ; and, despite this, the cost of this fixture for clamping the parts is still very high, at hundreds of thousands of yuan, the production is difficult, the cycle is long, and it is not conducive to product changeover, so people urgently need to find a better clamping method

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