Portable chamfering machine

Abstract

A portable chamfering machine which can perform chamfering at a desired set amount with good productivity while preventing a cutting tip from being chipped without increasing burden on a worker. The portable chamfering machine (1) has a cutting tip (30) fixed to a rotating shaft (7) projecting from a casing (4). The portable chamfering machine comprises a guide plate (26) secured to the casing (4) toward the direction perpendicular to the rotating shaft (7) and coming into contact with the upper surface (100a) of a member (100) to be processed; a guide roller (20) supported at the end of the rotating shaft (7) and coming into contact with the side surface (105a) of a hole (105); and a steel ball (40) projected from the guide plate (26) by the urging force of a spring (41) to form a predetermined clearance between the upper surface (100a) and the guide plate (26). When the clearance is formed, the member can be processed with a chamfering amount smaller than a desired set amount, and the member can be processed with a desired set amount by pressing the portable chamfering machine (1) against the urging force and bringing the guide plate (26) into contact with the upper surface (100a).

Description

technical field [0001] The present invention relates to a portable chamfering machine, and more particularly to a portable chamfering machine capable of preventing chipping of cutting inserts and performing chamfering at a desired set amount with high productivity without increasing the burden on the operator. Background technique [0002] Conventionally, there is known a portable chamfering machine capable of chamfering the outer peripheral end portion of a workpiece and the inner peripheral portion of a hole or groove with a cutting insert attached to a rotating shaft protruding from a housing. [0003] In Patent Document 1, a portable chamfering machine is disclosed, which has a guide plate fixed on the casing and a guide roller freely rotatably installed at the end of the rotating shaft, by stacking By placing the guide plate under the guide roller and moving it while pushing the outer peripheral portion of the guide roller toward the end surface (side surface) of the wo...

AI Technical Summary

Problems solved by technology

Especially when machining the inner peripheral part of the hole, since it is impossible to visually see when the cutting insert touches the chamfering part, it is necessary to prevent the impact caused by inadvertent contact, and at the same time, it is necessary to slowly move the chamfering machine while using a strong grip. The surface of the workpiece is advanced so that chipping due to impact does not occur, which is the main cause of increasing the burden on the operator

In the invention described in Patent Document 1, such problems are not considered

Images