A sawtooth forming method

Abstract

The invention discloses a sawtooth forming method. A wire electric discharge machine tool is used to cut a saw band, and the continuous cutting of multiple sets of sawtooth can be completed through steps such as knife setting, cutting, resetting, and material dragging. The precision molding of the band saw blade is realized through automatic control molding, which can reduce the burr and processing accumulation during processing, and has the advantages of high flexibility, high precision and low energy consumption.

Description

technical field [0001] The invention belongs to the field of sawtooth forming processing of band saw blades, and in particular relates to a sawtooth forming method. Background technique [0002] At present, there are many ways to shape the saw teeth of the band saw blade. The most common method is to use a form milling cutter, that is, to make a milling cutter edge that is consistent with the design tooth profile, and form the saw teeth through milling. The main disadvantages of tooth milling are: [0003] 1) Insufficient flexibility, mass production is required, and at least 10 rolls of composite steel strips are required to be processed into sawtooth at the same time (generally not less than 800m per order); [0004] 2) The processing cost is high. A single milling cutter is worth tens of thousands of RMB, and a tooth shape requires at least one milling cutter. Conventional band saw blade manufacturers generally have dozens of tooth shapes, which takes up a very large p...

AI Technical Summary

Problems solved by technology

[0003] 1) Insufficient flexibility, mass production is required, and at least 10 rolls of composite steel strips are required to be processed into sawtooth at the same time (generally not less than 800m per order);

[0004] 2) High processing cost

A single milling cutter is worth tens of thousands of RMB, and a tooth shape requires at least one milling cutter. Conventional band saw blade manufacturers generally have dozens of tooth shapes, which takes up a very large proportion of funds, and the number of saw teeth processed by a single milling cutter is also limited. ;

[0005] 3) It is difficult to avoid processing burrs

[0007] 1) Cutting accuracy is not high

The laser cutting speed is fast, and there are acceleration and deceleration problems at the sharp corner position due to the speed conversion of different axes, which may easily cause energy concentration at the sharp corner position, making it difficult to control the amount of material removed, resulting in low processing accuracy; The raw material itself has thickness, bending, etc., so that the distance from the laser head to the raw material will change, resulting in uneven processing energy, changes in the amount of removal, and low precision;

[0008] 2) The processing cost is relatively high

[0009] 3) There is a problem of processing accumulation

In the process of using high-pressure gas to blow off the ablation material, it is easy for the raw material vaporized by the laser to stick to the cutting edge

The problems of water jet cutting are similar to those of laser cutting, such as low precision and high processing consumption.

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