Square tube cutting method and device

Abstract

The invention discloses a square tube cutting method and device. The cutting method comprises steps as follows: a saw plate moves downwards at a first downward pressing speed a, cuts side walls horizontally distributed at the upper part and the lower part of a square tube and cuts two vertically distributed side walls of the square tube at a second downward pressing speed b, wherein the first downward pressing speed a is smaller than the second downward pressing speed b. The square tube cutting device comprises a base, wherein the saw plate is vertically arranged on the base and connected witha first driving mechanism, and the base is equipped with a lifting device of the saw plate and a square tube fixing mechanism; the square tube cutting device further comprises a speed switching device capable of controlling the lifting device to drive the saw plate to cut the horizontal side walls and the vertical side walls at two downward pressing speeds respectively. According to the square tube cutting method and device, the downward pressing speeds of the saw plate can be switched according to the cut position during cutting of the square tube, so that loss of the saw plate is reduced, and the service life of the saw plate is prolonged.

Description

technical field [0001] The invention relates to the field of square tube cutting, in particular to a square tube cutting method and device with switchable cutting speed. Background technique [0002] Generally, in the process of cutting the square pipe downwards with the saw disc, the pressing speed of the saw disc is fixed. However, when the saw disc cuts the square tube downwards, the first thing to be cut on the square tube is its upper horizontal side wall, and the cut part is wider. After the saw disc has cut the horizontal side wall on the upper part of the square tube, it will continue to cut the two vertically arranged side walls of the square tube, and the cut position is narrower now. Then the saw disc can continue to cut the horizontal side wall of the square tube bottom downwards, and the position of its cutting is also wider. [0003] When the cutting part of the saw disc is narrow, the resistance received is smaller; when the part cut by the saw disc is wider...

AI Technical Summary

Problems solved by technology

[0003] When the cutting part of the saw disc is narrow, the resistance received is smaller; when the part cut by the saw disc is wider, the resistance received is greater, and since the speed of the saw disc pressing down remains unchanged, the saw disc and other The load on the driving device is large, and long-term use will greatly shorten the service life of the saw disc and the driving device

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