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Drill bit for high-TG plate targeting hole machining

A hole processing and drilling technology, which is used in the field of high TG sheet target hole processing drills, can solve the problems of large hole wall burrs, wear, hole straightness, and poor roundness.

Pending Publication Date: 2019-12-13
GUANGDONG DTECH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, PCB is a high TG plate. In the PCB industry, when a drill bit is used to process target holes, the drill tip is prone to chipping and wear, resulting in large burrs on the hole wall and low tool life; and the cutting force of the drill bit is insufficient. Balance, resulting in quality problems such as poor straightness and roundness of the processed holes

Method used

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  • Drill bit for high-TG plate targeting hole machining
  • Drill bit for high-TG plate targeting hole machining

Examples

Experimental program
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Effect test

Embodiment

[0026] Such as Figure 1-2 As shown, a drill bit for high TG sheet metal target hole processing, including a drill body 1 and an extended shank 2, the drill body 1 and the extended shank 2 are connected through a transition cone 3, and the drill body 1 is provided with a knife groove 11 and a cutting edge 12 , the sipe 11 is set adjacent to the blade 12, and the end of the blade 12 is provided with a chisel edge 121, a low-edge drill point 122 and a knife-point protection structure 123, and the chisel edge 121, the low-edge drill point 122, and the knife-point protection structure 123 are sequentially connect. The drill point has a grinding chisel edge 121, which is sharp and the plate is not easily deformed; because the sharp points on both sides of the top corner are protected by the tool tip, which is not limited to a straight line or arc shape, the tool tip is resistant to chipping and wear; the side edge The mode of grinding the back angle or retaining the cylindrical ed...

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Abstract

The invention belongs to the technical field of machining equipment, and particularly relates to a drill bit for high-TG plate targeting hole machining. The drill bit comprises a drill bit body and alengthened cutter handle; the drill bit body is connected with the lengthened cutter handle through a transition cone; the drill bit body is provided with a cutter groove and a cutting edge, wherein the cutter groove is arranged adjacent to the cutting edge; and the end part of the cutting edge is provided with a transverse edge, a low-edge drill point and a nose protection structure, and the transverse edge, the low-edge drill tip and the nose protection structure are sequentially connected. The drill point contains a grinding transverse edge, which is sharp in cutting, and a plate is not prone to deform; due to the fact that the nose protection is adopted at the sharp points on the two sides of a vertex angle, a hole is not limited to a straight-line shape or an arc shape, and the nose is resistant to disintegration and abrasion; and a side edge adopts a mode of grinding a back angle or reserving a cylindrical blade, and the quality of machining a hole wall is high due to the fact that grinding the back angle of the side edge is adopted.

Description

technical field [0001] The invention belongs to the technical field of processing equipment, and in particular relates to a drill bit for processing target holes in high TG plates. Background technique [0002] As we all know, in the field of machining, the drill bit is an indispensable basic tool. The drill bit is a tool used to process through holes or blind holes on solid parts such as the outer surface and inner cavity surface of the part. [0003] In the prior art, PCB is a high TG plate. In the PCB industry, when a drill bit is used to process target holes, the drill tip is prone to chipping and wear, resulting in large burrs on the hole wall and low tool life; and the cutting force of the drill bit is insufficient. Balance, resulting in quality problems such as poor straightness and roundness of the processed holes. [0004] It can be seen from the above that the relevant technologies need to be improved urgently. Contents of the invention [0005] The purpose of ...

Claims

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Application Information

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IPC IPC(8): B26F1/16
CPCB26F1/16
Inventor 杨肖王志荣李智林
Owner GUANGDONG DTECH TECH CO LTD
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