Chipless cutting device

Abstract

The invention discloses a chipless cutting device and relates to the field of machining. In the prior art, a chipless cutting machine comprises a cutter head mechanism, a rotating mechanism and a feeding mechanism; feeding movement transmission of the feeding mechanism is achieved through linear contact of a sliding sleeve and a push rod; and the sliding sleeve rotates passively along with the rotating mechanism, so that the linear speeds of the points, at the short distance from the rotating axis, of the sliding sleeve are low, and the linear speeds of the points, at the long distance from the rotating axis, of the sliding sleeve are high, and consequently matching stress between the sliding sleeve and the push rod is unbalanced. According to the chipless cutting device, a constraint structure is arranged between a push rod and a sliding sleeve, the constraint structure controls relative movement of the push rod and the sliding sleeve in the rotating axis direction, wherein the constraint structure adopts point contact constraint; and thus, the stress of the push rod and the sliding sleeve is balanced, the transmission stability of a feeding mechanism is improved, machining difficulty in production of the push rod and the sliding sleeve is reduced, the maintenance cost of the push rod and the sliding sleeve is reduced, and the quality of cut-off machining of pipes is improved.

Description

technical field [0001] The invention relates to the field of machining, in particular to a chipless cutting device. Background technique [0002] The production of pipe fittings involves many processes. Before the implementation of these processes, it is necessary to cut the pipe material, that is, to pre-process the raw pipe material such as straightening and cutting to length. [0003] In the prior art, the cut-to-length of the pipe adopts the chipless cutting processing method. The chipless cutting machine includes a cutter head mechanism, a rotating mechanism and a feeding mechanism. The chipless cutting machine cuts the pipe by rotating and rolling the blade of the cutter head mechanism around the outer surface of the pipe and feeding movement perpendicular to the axis of the pipe. The feeding mechanism for realizing blade feeding includes a sliding sleeve fitted outside the rotating mechanism and a push rod installed above the sliding sleeve. The push rod drives the ...

AI Technical Summary

Problems solved by technology

This will lead to an unbalanced force in the cooperation between the sliding sleeve and the push rod, resulting in a stuck phenomenon in the movement of the cutter head mechanism and reducing the quality of the pipe cutting process.

The linear contact between the sliding sleeve and the push rod requires high machining accuracy, and the unbalanced force of the cooperation will easily damage the sliding sleeve and the push rod, and the processing cost is high

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