Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Air suction type drill bit with replaceable blades used in CFRP drilling

A drill bit and blade technology, which is applied in the field of suction drill bit for CFRP drilling, can solve the problems affecting the strength and fatigue life of the carbon fiber composite material connection structure, affecting the health of workers, the service life of the tool, and failing to realize the automatic recycling of chips, etc. , to achieve the effect of lowering the temperature, reducing the processing cost, and suppressing the occurrence of defects

Pending Publication Date: 2018-11-16
HARBIN UNIV OF SCI & TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the hole processing of CFRP, processing defects such as delamination, burr, fiber tearing, and hole wall scratches are easily generated, which seriously affect the strength and fatigue life of the carbon fiber composite connection structure.
In addition, the powdery chips produced during the hole machining process greatly pollute the working environment, affecting the health of workers and the service life of tools.
At present, chip processing mainly adopts manual method, which has low efficiency and has not realized the automatic recycling of chips.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Air suction type drill bit with replaceable blades used in CFRP drilling
  • Air suction type drill bit with replaceable blades used in CFRP drilling
  • Air suction type drill bit with replaceable blades used in CFRP drilling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] specific implementation plan

[0021] This paper designs a welded insert for CFRP drilling to reduce defects during CFRP processing. The insert mainly includes: 1-drill body, 2-blade, 3-suction channel, 4-chisel edge , 5-main cutting edge, 6-main rake face, 7-first main flank face, 8-second main flank face, 9-first auxiliary cutting edge, 10-first auxiliary rake face, 11 -First flank, 12-Second cutting edge, 13-Second rake face, 14-Second flank, 15-Screw, 16-Cut at chisel edge.

[0022] 2-The blade can be replaced, and it is connected to the 1-drill body through 15-screws; 6-The rake angle of the main rake face is positive, which can improve the processing quality; 3-The hole is connected to the negative pressure generating device outside the drill body, and the chips are mainly Generated at the 6-rake face, when the negative pressure is generated, the chips pass through the 3-suction channel near the 2-drill body to the outside and are absorbed by the chip absorbing d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a drill bit used in CFRP drilling to reduce the defects in the process of CFRP machining. The drill bit comprises 1-drill body, 2-blades, 3-air suction duct, 4-chisel edge, 5-main cutting edge, 6-main rake face, 7-first main flank face, 8-second main flank face, 9-first minor cutting edge, 10-first minor rake face, 11-first minor flank face, 12-second minor cutting edge, 13-second minor rake face, 14-second minor flank face, 15-screw and 16-cutting at chisel edge. The effects of tearing, burrs, delamination and thermal damage during machining can be achieved, and the machining cost can be reduced by the replaceable blades.

Description

technical field [0001] The invention relates to a drill bit for CFRP hole making, in particular to an air-suction drill bit for CFRP drilling with replaceable blades. Background technique [0002] Carbon fiber composites are widely used in aerospace and other fields due to their light weight, high specific strength and high specific modulus. However, processing defects such as delamination, burrs, fiber tearing, and hole wall scratches are easily produced during the hole processing of CFRP, which seriously affect the strength and fatigue life of the carbon fiber composite connection structure. Moreover, the powdery chips generated during the hole machining process pollute the working environment greatly, affecting the health of workers and the service life of tools. At present, chip processing mainly adopts manual method, which has low efficiency and has not realized automatic recycling of chips. For this reason, a drill bit for CFRP drilling is designed in this paper, w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23B51/00B23Q11/00
CPCB23B51/0081B23Q11/0046
Inventor 王义文卢传迪许成阳付鹏强何耿黄李凌祥
Owner HARBIN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com