Internal chip removal type telescopic gapless positioning device

Abstract

The invention relates to machining and manufacturing, provides a positioning mechanism for tool clamp shell parts, and particularly relates to a gapless positioning device and an internal chip removal type telescopic gapless positioning device. By the adoption of the gapless positioning device, rapid centering and rough positioning of a product provided with a positioning hole are achieved, and a hollow end face is obtained. By the adoption of the internal chip removal type telescopic gapless positioning device, smooth chip removal is guaranteed when an internal through hole is machined. The internal chip removal type telescopic gapless positioning device comprises a positioning base and a pedestal. The positioning base and the pedestal are connected in a floating mode through an internal spring. An oblique notch used for chip removal is formed in the side face of the positioning base. A protective ring is installed at the junction of the outer side of the lower portion of the positioning base and the outer side of the upper portion of the pedestal. By the adoption of the internal chip removal type telescopic gapless positioning device, gapless positioning of a workblank can be achieved; through a special chip removal oblique surface, aluminum chips generated due to machining can be discharged downwards continuously when the internal through hole is machined, and the quality of a machined surface is guaranteed; and the protective ring is installed on the outer side of the lower portion of the positioning base, so that the effect that the positioning base is prevented from getting stuck in the use process is guaranteed.

Description

technical field [0001] The invention relates to mechanical processing and manufacturing, and a positioning mechanism for fixture shell parts. Especially the fast centering and coarse positioning of products with positioning holes, the gapless positioning device for the empty end face, and the internal chip removal telescopic gapless positioning device to ensure smooth chip removal during internal through hole processing. Background technique [0002] At present, housings such as automobile transmissions are mostly formed by aluminum alloy die-casting technology. The mold will have a certain casting angle during casting, and the blank will also be deformed to a certain extent during actual casting. There will also be wear and deformation, which will cause different degrees of deformation of the shell blank. In the past, when positioning the blank in the first process, most of the special parts of the blank shape were selected for rough positioning, or some larger core-pulling...

AI Technical Summary

Problems solved by technology

[0002] At present, housings such as automobile transmissions are mostly formed by aluminum alloy die-casting technology. The mold will have a certain casting angle during casting, and the blank will also be deformed to a certain extent during actual casting. There will also be wear and deformation, which will cause different degrees of deformation of the shell blank. In the past, when positioning the blank in the first process, most of the special parts of the blank shape were selected for rough positioning, or some larger core-pulling holes were selected for positioning, but Due to the error of the casting, the hole position of the shell after machining is misaligned with the blank, which affects the appearance. In addition, because the machining allowance of the die-casting parts is small, improper positioning will cause a certain part to be scrapped due to insufficient allowance. If it is used for rough positioning Due to the use of the mold, the core-pulling fracture has not been cast, so it cannot be positioned and processed

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