Processing method of hinge drill jig for drilling small holes on long-shaft parts

Abstract

The invention relates to a hinge drill jig for drilling small holes on long-shaft parts, and a processing method of the hinge drill jig. The processing method of the hinge drill jig comprises the following steps: 1), processing a base; 2), processing a drill plate, wherein the upper end surface and the lower end surface of the drill plate are lathed to be parallel to each other while the thickness made allowance is 0.6 to 0.8 mm, tempering is carried out according to HRC 27 to 29 while the thickness allowance is ground to the thickness required according to the drill plate, the outline of the drill plate is scratched out while no notch is manufactured, the outline of the drill plate is milled while no notch is milled, quenching and tempering are carried out according to HRC 59 to 62, line cutting is conducted on a notch while the polishing quantity is left to be 0.02 mm, and the line cutting surface is polished; and 3), processing the drill plate and the base integrally, wherein a plurality of drill plates are fixed on the base; the drill plate and the base are integrally processed according to line cutting; centering is carried out by taking the ground surface of the bottom surface as a benchmark; holes and inclined planes are cut on the drill plates once while polishing quantity is left on the inclined planes; and the inclined planes are polished. When the processing method is adopted reasonably, the machining precision can be improved, the processing can be more convenient, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to a drilling mold, in particular to a hinge drilling mold for drilling small holes on long shaft parts and a processing method thereof. Background technique [0002] Such as figure 1 and figure 2 Shown is a hinged part, this type of part is characterized in that the hole neck (10) is small and long, and the tolerance requirements of the small holes are relatively strict, all within ±0.02mm. In the existing processing method, since the axis of the small hole of the jig tooling is only 2.85mm away from the edge of the tooling, the tooling cannot be inlaid with a bushing, and only Cr12Mov, T8, T8A and other materials can be used as a whole, and high-temperature heat treatment is carried out. This makes the processing method is greatly limited. In the previous processing methods, the drilling templates were single-piece heat-treated and wire-cut, then fixed on the base, and then finely adjusted with pin shafts. Since the drill te...

AI Technical Summary

Problems solved by technology

This makes the processing method is very limited

In the previous processing methods, the drilling templates were single-piece heat-treated and then wire-cut, then fixed on the base, and then finely adjusted with pins. Since the drill template hole necks are very small, the pins are thin and Long, the rigidity is very bad, so the processing not only wastes a lot of time, but also the coaxiality of the small holes of the drilling template is difficult to guarantee

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