Device for simultaneously removing burrs at inner and outer orifices of cross hole

Abstract

The invention discloses a device for simultaneously removing burrs at inner and outer orifices of a cross hole. The device comprises a main shaft, an abrasive belt clamping and fixing structure, a flexible abrasive belt, an abrasive belt clamping movable structure, a reset spring, a first elastic supporting structure and a second elastic supporting structure, the reset spring is installed in an inner cavity of the main shaft, and the reset spring abuts against the abrasive belt clamping movable structure; the movable end of the flexible abrasive belt is installed on the main shaft in a sliding mode through the abrasive belt clamping movable structure, the fixed end of the flexible abrasive belt is installed on the main shaft through the abrasive belt clamping fixed structure, the fixed end of the first elastic supporting structure is installed on the main shaft, and the movable end of the first elastic supporting structure abuts against the inner wall of the flexible abrasive belt. The fixed end of the second elastic supporting structure is installed on the abrasive belt clamping movable structure, and the movable end of the second elastic supporting structure abuts against the inner wall of the flexible abrasive belt. Burrs of the inner hole and the outer hole of the cross hole are removed thoroughly without residues, efficiency is high, and the device can adapt to cross holes or through holes with different diameters.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a device for simultaneously removing burrs from the inner and outer openings of intersecting holes. Background technique [0002] In traditional mechanical manufacturing or parts processing, there are many cases of cross hole processing, such as drilling holes on circular pipes, or drilling through holes on ordinary metal flat plates; after drilling or milling two intersecting holes After that, the orifice (especially the exit end of tool processing) often produces burrs, and the negative impact brought by the burrs is extremely large. According to the survey in the United States, among all the failures of parts or components, the proportion of failures caused by burrs 16%; the burr may also bring the safety hazard of injury to the operator; thus deburring is more important. Existing deburring techniques and means include: ①Manual deburring with a deburring knife; ...

AI Technical Summary

Problems solved by technology

[0002] In traditional mechanical manufacturing or parts processing, there are many cases of cross hole processing, such as drilling holes on circular pipes, or drilling through holes on ordinary metal flat plates; after drilling or milling two intersecting holes After that, the orifice (especially the exit end of tool processing) often produces burrs, and the negative impact brought by the burrs is extremely large. According to the survey in the United States, among all the failures of parts or components, the proportion of failures caused by burrs 16%; the burr may also bring a safety hazard of injury to the operator; therefore, deburring is more important

Existing deburring techniques and means include: ①Manual deburring with a deburring knife; ②Elimination with a round file; ③Grinding with flexible abrasive belt (paper); Oil injection ablation; the above methods or measures all have various problems or shortcomings, including: ①②③④ are all based on the hand-held tool moving along the orifice track, which is labor-intensive, labor-intensive, and inefficient; the internal holes In most cases, it is difficult for the tool to reach the burr removal part, so it cannot be implemented; even if it is like a through hole on a common flat plate, it has to be turned over twice, which is also labor-intensive and time-consuming

⑤⑥It belongs to the special processing method, ⑤Electric spark removal efficiency is low, and it is easy to damage other parts; Deburring has an adverse effect on the environment, i.e. heavy pollution

⑦Injection ablation is not only unsafe, but also easily damages the surface of innocent workpieces, or changes the mechanical properties of other surfaces

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