Cutter bar device of numerically-controlled machine tool and operation method thereof

Abstract

The invention provides a cutter bar device of a numerically-controlled machine tool and an operation method thereof. The cutter bar device of the numerically-controlled machine tool comprises a cutter bar connected with a main shaft and a cutter bit connected with the cutter bar. The head of the cutter bar is inserted into the main shaft. The tail of the cutter bar is in an inverted-tapered shape, the tail is connected with the cutter bit, and the specific value of the diameter of the end of the tail and the diameter of the cutter bit is smaller than or equal to 1.7:1. The specific value of the diameter of the end of the main shaft and the diameter of the head of the cutter bar is smaller than or equal to 1.5:1. The taper of the head of the cutter bar is smaller than or equal to 2 degrees. The taper of the tail of the cutter bar is smaller than or equal to 10 degrees and larger than and equal to 3 degrees. The specific value of the length of the tail of the cutter bar and the length of the portion, exposed out of the cutter bar, of the cutter bit is smaller than or equal to 2.5:1. The surface of the cutter bit is covered with an ultramicron layer. The cutter bar device has the advantages of being simple and reasonable in structure, flexible to operate, high in working efficiency and long in service life.

Description

technical field [0001] The invention relates to a numerically controlled machine tool, in particular to a cutter bar device of a numerically controlled machine tool and an operating method thereof. Background technique [0002] Chinese Patent Document No. CN 102059408 A disclosed a spindle device of a CNC gear hobbing machine on May 18, 2011. The spindle device includes a tool bar assembly, a tool bar assembly clamping mechanism and a tool changing mechanism. The tool bar assembly consists of a tool bar, It is composed of hob, knife adjustment pad, shaft sleeve, lock nut and knife bar pull stud. The clamping mechanism of the tool bar assembly is composed of a square key and a claw assembly, and the tool changing mechanism is composed of a pull rod, a piston rod, a disc spring, an oil cylinder body, a flange, a bracket, a rotary joint and a limit switch. When this CNC gear hobbing machine is working, it is difficult to process small places, which makes users unsatisfied. ...

AI Technical Summary

Problems solved by technology

This processing method has many steps and is time-consuming and labor-intensive.

[0004] When processing grooves in the past, see figure 2 As shown, the cutter head advances straight along the dotted line in the figure. In this case, the cutting load of the cutter head is constantly changing, and at the bottom of the groove, the cutter head is easily damaged.

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