Precise long-short-blade PCBN small-helix-angle vertical milling cutter for machining thin-walled workpieces and machining method

Abstract

The invention discloses a precise long-short-blade PCBN small-helix-angle vertical milling cutter for machining thin-walled workpieces and a machining method. The vertical milling cutter comprises a hard alloy base body and a plurality of sets of PCBN cutting blades, and the multiple sets of the PCBN cutting blades are uniformly distributed in the circumferential direction of the end part of the hard alloy base body. The PCBN cutting blades comprise short edges and long edges, the short edges and the long edges are arranged on the hard alloy base body at intervals, the long edges are oppositely distributed in a pairwise mode, the short edges are oppositely distributed in a pairwise mode, and helical angles are arranged on the front cutter faces of the short edges and the long edges respectively. According to the precise long-short-blade PCBN small-helix-angle vertical milling cutter for machining the thin-walled workpieces and the machining method, the spiral rake face with a small spiral angle can be ground by utilizing the small-angle inclined surface rake face edge, so that the spiral edge structure of the PCBN spiral vertical milling cutter is realized, the cutter relieving phenomenon is improved when the product is machined, and the surface quality and the thin-wall perpendicularity of the machined product are improved. The opposite cutting edges are controlled to jump slightly so that the spiral cutting edges can be gradually and stably cut into the workpieces under the condition of small cutting depths, and precise milling of the thin-walled workpieces is realized.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a precision long and short blade PCBN small helix angle end mill for processing cast iron thin-walled parts and a processing method. Background technique [0002] In the processing of cast iron thin-walled parts, due to the influence of the hardness and machinability of castings, the machining life of existing tools such as cemented carbide is extremely low; [0003] However, due to the limitation of the planar structure of the PCBN tool blank, it is difficult to make a tool with a helix angle, so the traditional rake face is inclined, and the cutting edge cannot cut into the workpiece gradually and smoothly; due to the characteristics of PCBN superhard material, The existing processing technology is difficult to process the spiral rake face on the plane rake face; it is difficult for the existing tools to achieve high product surface quality, and at the...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a precision long and short blade PCBN small helix angle end mill and a processing method for processing thin-walled parts, aiming to solve the problems of low processing life, low processing efficiency, poor surface quality of processed products, and vertical processing of processed products. The problems of poor precision, low machining accuracy, and difficulty in meeting the high perpendicularity requirements of thin-walled workpieces

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