Fixture for drilling differential lock pressure switch holes and ventilation hole inclined holes of intermediate and rear axle housing assemblies of automobile

Abstract

The invention discloses a fixture for drilling differential lock pressure switch holes and ventilation hole inclined holes of intermediate and rear axle housing assemblies of an automobile. The fixture comprises a base and a rotating plate assembly which is arranged on the base and used for fixing the intermediate and rear axle housing assemblies, wherein a shell is arranged on the top of the base; a main shaft is arranged in the shell; one end of the main shaft is connected with the rotating plate assembly, and the other end of the main shaft is connected with a rotating counterweight mechanism; and the rotating counterweight mechanism comprises a counterweight disc sleeved at one end of the main shaft, and counterweight blocks arranged on the edges of the counterweight disc. The rotating counterweight mechanism for balancing axle housings and the rotating plate assembly is arranged behind the base, so that the axle housings can be easily rotated to inclined hole machining angles on the common radial drilling machine by a single person only through the counterweight device of the fixture.

Description

technical field [0001] The invention relates to the field of mechanical processing of an automobile middle and rear axle housing assembly, in particular to a jig for drilling a differential lock pressure switch hole and an air vent oblique hole of an automobile middle and rear axle housing assembly. Background technique [0002] The machining accuracy of the differential lock pressure switch hole of the middle and rear axle housing assembly is required to be high, and the deviation of the machining position can directly cause the pressure switch of the axle assembly to be inaccessible and the differential lock to malfunction. The holes are distributed on the oblique side of the middle and rear axle housing, and the reference plane for processing and positioning is distributed in the three-dimensional space plane, so positioning is difficult, and the rotation and hole size requirements are very high during processing. In order to improve processing efficiency, both product qua...

AI Technical Summary

Problems solved by technology

At present, in the axle assembly professional factories engaged in the production of axles in China, the production of the differential lock pressure switch hole and the oblique hole of the vent hole of the middle and rear axle housing assembly mainly rely on CNC machine tools or combined special machines for processing, which has high processing costs and low efficiency.

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