An indexable broach

Abstract

The invention belongs to the technical field of tools and particularly relates to an indexable broaching tool. The indexable broaching tool comprises a tool body, multiple groups of first cutting blades and multiple groups of second cutting blades, wherein multiple groups of first blade holders and multiple groups of second blade holders are arranged on one end surface of the tool body, the first blade holders and the second blade holders are arranged in a staggered manner, the first cutting blades are fixed on the first blade holders, and the second cutting blades are fixed on the second blade holders. The quantity of first cutting blades and the quantity of the second cutting blades are selected according to the length of a workpiece required to be machined and the accuracy requirements, and the machining efficiency is improved. Wear of the blades can be effectively reduced, the service life of the broaching tool is prolonged, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of cutting tools and relates to an indexable broach. Background technique [0002] In the field of modern mechanical processing, broaches are mainly used for processing round holes, spline holes, keyways, planes and forming surfaces, etc. When the broach is broaching, each tooth cuts a certain thickness of metal from the workpiece, and finally obtains the required size and shape. There are cutter teeth on the surface of the tool, and the size and shape of the cutter teeth increase and change sequentially from the cutting end to the cutting end, and are used for broaching workpieces of different shapes. Broaches are divided into internal broaches and external broaches according to the different parts of the processed surface; according to the different force modes during work, they are divided into broaches and push tools. For common broaching tools, the chips generated by broaching will be squeezed along t...

AI Technical Summary

Problems solved by technology

For common broaching tools, the chips generated by broaching will be squeezed along the chip flute to the gap between the side of the broach and the side of the part under the thrust of subsequent chips, which not only increases the broaching resistance, but also makes the chips easy to scratch The surface has been machined, which leads to low machining accuracy and cannot meet the requirements of high-precision machining; when the broach is cutting, because the direction of the blade edge is perpendicular to the cutting direction, the cutting force is large, the cutting process is unstable, and the processing quality of the parts is not high. And the tool is easily damaged; when processing difficult-to-machine materials, such as ductile iron workpieces, high-temperature alloy workpieces, titanium alloy workpieces, etc., the broaches made of high-speed steel materials or powder high-speed steel are easy to wear and have a long service life. short

Images