Tool used for drilling circuit board

Abstract

A tool used for drilling a circuit board comprises a working part and a connecting part. The working part is provided with a cylindrical working region, the front end face of the working region is a plane, an edge part is formed on the front end face, a cutting edge and a chip discharging groove are formed on the edge part, the cutting edge is used for drilling a machined object, and the chip discharging groove is used for containing cutting chips. The tool cutting edge angle of the edge part is zero degree, the tool back angle of the edge part ranges from 3 degrees to 10 degrees, and the edge part spirally extends to a basic end from the front end face along the periphery face of the working region. The connecting part is fixedly connected to the basic end of the working part and provided with a keeping structure kept in a tool keeping device. The working part is of a cutting edge structure like a reamer, machining size precision is high, and the surface roughness of drilled holes is low; in the machining process, cutting machining is completed mainly depending on the front end face of the cutting edge, in this way, the front end face of the working part is mainly abraded, and regrinding performance is good; because only one edge part is arranged, the tool is high in structural strength, good in resistance to breakage, simple in structure and easy to machine.

Description

technical field [0001] The invention relates to the technical field of circuit board processing, in particular to a circuit board drilling tool. Background technique [0002] PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. [0003] In the production of printed circuits, it is necessary to perform drilling and other processing procedures on the PCB board. As the market continues to introduce thin, light and small products, it is moving towards the era of high-performance, high-speed, etc., and is developing towards high-frequency, high-speed, and multi-IO chips. The design of printed circuit boards (PCBs) must be directed towards high hole density and fine line width. , The direction of high load-bearing components changes, so the drilling quality requ...

AI Technical Summary

Problems solved by technology

When the drill bit is used for long-term drilling, it will often cause wear and damage to the cutting part of the front end of the drill bit, which will form a great resistance when cutting into the workpiece, and due to the relatively large contact area and friction force, the service life of the drill bit will be shortened

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