Indexable double-sided cutting inserts

Abstract

The invention provides a double-sided cutting blade capable of transferring. The double-sided cutting blade comprises a blade body which has a polygon shape and is symmetrical up and down; the blade body comprises an upper end surface, a lower end surface and side surfaces; a mounting through hole is arranged at the geometric center of the blade body; every two adjacent side surfaces are connected with each other by an arc surface; a cutting unit is arranged at the included angle between every two adjacent side surfaces; each cutting unit comprises an auxiliary cutting edge, a main cutting edge, a chamfered edge plane, a front cutter surface, a bottom surface of a concave surface and a chip breaking table body, wherein the front cutter surface is connected with the bottom surface of the concave surface and the chip breaking table body into a whole; each chip breaking table body is provided with a plurality of bosses which are respectively adjacent to each main cutting edge; the bosses are symmetrically arranged about the angular bisector; the surfaces of the bosses are gradually heightened, so that a first chip breaking table and a second chip breaking table can be formed. The double-sided cutting blade capable of transferring improves the surface quality of the processed parts, the chip breaking capability of the blade and the whole performance of the blade on the premise of guaranteeing the strength of the cutting edge of the blade.

Description

technical field [0001] The invention belongs to the technical field of cutting processing, in particular to an indexable double-sided cutting insert for finishing. Background technique [0002] Among the blades for chip removal or cutting of metal workpieces, there is a type of finishing blade that is only suitable for the last cutting process. This process must ensure the dimensional accuracy and surface quality of the workpiece to be processed. Its main characteristics in the processing process are: : The cutting depth is shallow, the feed rate is small, the cutting force on the blade itself is small, the size of the part after processing is the final size of the part, and the surface accuracy is high. This type of finishing insert should be designed with different grooves according to different cutting conditions and processing objects. In the process of blade groove design, comprehensive factors such as processing environment, processing object, cutter body material, co...

AI Technical Summary

Problems solved by technology

For different cutting conditions, the processing design of the cutting edge and groove is not the same. Since the cutting volume of the finishing blade is small, the cutting resistance is small, and the blade wear time is long, the most important point is to ensure the accuracy of the processed parts, the surface Quality, therefore, the cutting edge is relatively sharp in design, and the groove structure is relatively complicated

[0003] On the other hand, the chip breaking function design is also very important in the geometry design of the finishing insert, because the cutting depth of the finishing insert is shallow and the lateral bending stiffness is low, especially when processing P-type materials, it generally forms a long and thin spiral Type chips, difficult to break chips by themselves, tend to form entanglements, damage the machined surface, and affect the surface quality of the machined parts

Chip breaking is mainly done by the cutting unit of the tool tip. In the existing technology, a single chip breaking table and a straight cutting edge are mostly used, which is greatly affected by the processing conditions, and the chip breaking is irregular, which affects the surface processing accuracy.

Images