Spatial tapered hole processing method for throttle body

Abstract

The invention discloses a spatial tapered hole processing method for a throttle body. A spatial angular tapered hole processing technique is simplified into a common mechanical processing mode to replace the processing of high-precision equipment. The technical scheme adopts and designs a common clamp; and a spatial angular tapered hole is converted into a two-dimensional planar tapered hole of a single processing mode by converting a spatial angle through the clamp so as to realize processing on common tapered wire cutting equipment. The method improves the production efficiency and reduces the production cost on the premise of ensuring the processing quality.

Description

technical field [0001] The invention relates to a machining process for machining a space angle taper hole in mechanical manufacturing, in particular to a process method for processing a high-precision space angle taper hole of a throttle body by using the fixture design technology and combining common taper wire cutting equipment. Background technique [0002] Space angle taper hole processing technology has always been a relatively difficult technology in the field of mechanical manufacturing technology, especially space angle taper hole processing is even more difficult in mold manufacturing. Among the existing tapered hole processing technologies, most of them are tapered hole processing on a two-dimensional plane. There is a space angle taper hole on the throttle body part. In the past, the mechanical processing technology after die-casting was adopted, which caused the structure of the part to be loose, which caused the part to be scrapped. In order to reduce the mach...

AI Technical Summary

Problems solved by technology

In the initial processing of the space angle taper hole of the mold forming part, the process method of directly boring the space angle taper hole before quenching and then vacuum quenching is adopted; however, due to the deformation of the parts after quenching, the mold assembly relies on the fitter to repair manually, and the production efficiency is low. Low, the average assembly takes 3-4 days; at the same time, the dimensional accuracy of mold parts is also seriously affected, resulting in poor mold matching accuracy, causing parts to get stuck in water during the die-casting production process, resulting in too high frequency of mold maintenance (7-8 thousand per die-casting The number of molds requires maintenance) and the life of the mold is reduced (the average mold life is 40,000 to 50,000 molds); at the same time, it also affects the stability of the forming size of the parts; and in order to ensure the position accuracy of the space angle taper hole, all subsequent finishing The tapered hole must be used as the benchmark, which brings serious difficulties to the guarantee of subsequent machining dimensions

Through continuous process improvement, the process of boring the pre-hole before rough machining and forming by EDM after quenching is adopted; however, due to the influence of electrode (taper electrode) machining accuracy, clamping position accuracy, dimensional control, and machining benchmarks, In the assembly process, fitters are still required to repair, resulting in low mold fit accuracy, easy water jams in the die-casting process, high frequency of mold maintenance, reduced mold life, and unstable parts molding dimensions.

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