Die forging piston double-surface drilling fixture and double-surface drilling process thereof

Abstract

The invention relates to a die forging piston double-surface drilling fixture and a double-surface drilling process thereof; and compared with the prior art, the defects of low efficiency and weak precision in the die forging piston double-surface drilling operation are solved. The die forging piston double-surface drilling fixture comprises a die forging piston, a fixture base module, an upper butting module and a lower expansion module; the upper butting module is mounted on the fixture base module and positioned above the die forging piston; a positioning base is mounted above the fixture base module; the upper surface shape of the positioning base is the same with the inner surface shape of the die forging piston; and the die forging piston sleeves the positioning base. The die forgingpiston double-surface drilling fixture realizes synchronous drilling of two sides of two back skirt surfaces of the die forging piston, can achieve quick clamping and automatic positioned clamping, greatly reduces the drilling mold and workpiece assembly technical difficulty, and improves the alignment accuracy.

Description

technical field [0001] The invention relates to the technical field of mechanical drilling, in particular to a double-sided drilling jig for die-forging pistons and a double-sided drilling process method thereof. Background technique [0002] Due to the assembly requirements of the die forging piston and the piston pin, it is necessary to drill through holes on both sides of the rear skirt of the die forging piston in terms of technology. Existing drilling devices can only drill the die forging piston in one direction (one side), so the method of processing in two steps is often used to process the workpiece twice. [0003] However, there are two times of clamping and positioning in the separate processing method, resulting in low efficiency, and repeated positioning is more likely to cause a series of quality problems such as workpiece positioning errors and large dimensional deviations. At the same time, due to the complex and irregular geometric shape of the inner cavity...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of low efficiency and poor precision in the double-sided drilling of die-forging pistons in the prior art, and provide a double-sided drilling fixture for die-forging pistons and its double-sided drilling process to solve the above problems

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