Table of boring speed parameters of boring tool

The parameter table of boring cutter, boring and rotating speed is shown in the following figure:

Boring tool can be fixed on lathe tailstock or small tool rest. In addition, deep-hole boring requires a special deep-hole drilling and boring machine, boring tools should be equipped with boring rods, and hydraulic pump stations should use coolant to remove iron chips.

Boring can be divided into rough boring, semi-fine boring and fine boring. The dimensional accuracy of precision boring can reach IT8~daoIT7, and the surface roughness Ra value is 1.6 ~ 0.8 micron ... Boring can be divided into ordinary boring and deep hole boring, and ordinary boring can be carried out on ordinary lathe.

Extended data:

The machining accuracy in boring tool, boring and rotating speed machining is mainly used to characterize the fineness of the products produced, and it is a term to evaluate the geometric parameters of the machined surface. Machining accuracy is measured by tolerance grade, and the smaller the grade value, the higher its accuracy.

There are 20 tolerance levels from IT0 1, IT0, IT 1, IT2, IT3 to IT 18, in which IT0 1 indicates that the machining accuracy of the part is the highest and IT 18 indicates that the machining accuracy of the part is the lowest. General factories and mines belong to it7, and general agricultural machinery belongs to IT7.

In addition, according to the different functions of product parts, the machining accuracy needs to be different, and the machining form and technology are also different. This paper introduces the machining accuracy that can be achieved by several common machining forms such as turning, milling, planing, grinding, drilling and boring.