Method for preparing grinding-free drill head and drill head

A technology for grinding drills and drills, which is applied to drilling/drilling equipment, parts of boring machines/drilling machines, twist drills, etc., which can solve the problems of easy deformation of the groove side wall, insufficient life of the drill body, and loose connection, etc. , to achieve the effect of solving manufacturing difficulties, solving regrinding problems, and easy positioning

Inactive Publication Date: 2009-08-12
苏茂均
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because the groove section that it is set on the drill body is generally rectangular, and its side wall is a plane, after it is put into cutting head, because the cross section of cutting head is also the rectangle that fits with the groove, its side wall is also Plane, which has inaccurate positioning d

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
  • Method for preparing grinding-free drill head and drill head
  • Method for preparing grinding-free drill head and drill head
  • Method for preparing grinding-free drill head and drill head

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] see Figure 1 to Figure 9 , the preparation method of the wear-free drill bit provided by the present invention, it comprises drill body 1 and the cutting blade 2 that is detachably connected at the front end of this drill body, and it comprises the following steps:

[0034] (1) According to the set depth and width, a helical groove 5 for accommodating the cutting blade 2 is provided at the front end of the drill body 1, and the inner sidewalls 51 and 52 of the helical groove 5 are arc Shaped surface, and the two arc-shaped surfaces are centrally symmetrical, so that the overall profile of the spiral groove 5 is "S"-shaped; each of the described arc-shaped surfaces 51, 52 is a parallelogram after being unfolded;

[0035] (2) Prepare a cutting blade 2 that is compatible with the shape of the inner wall of the spiral groove 5 on the drill body 2 and whose side walls are two symmetrical arc surfaces;

[0036] (3) Put the cutting blade 2 into the drill body helical groove ...

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 provides a manufacturing method of a grinding-free drill bit, which comprises a drill body and a detachable cutting blade connected on the front end of the drill body; the manufacturing method is characterized by comprising the following steps: (1) according to the set depth and width, the front end of the drill body is equipped with a spiral groove for holding the cutting blade; both inner side walls of the spiral groove are arcwall faces, and the two arcwall faces are of central symmetry, so that the entire outline of the spiral groove is of S shape; each arcwall surface is a parallelogram after being unfolded; (2) the cutting blade with side walls being two symmetrical arcwall faces and matched with the inner wall shape of the spiral groove is prepared; (3) the cutting blade is placed into the drill spiral groove, and connected to prepare the grinding-free drill bit. No sequence exists between step (1) and step (2). The manufacturing method also provides the grinding-free drill bit prepared by using the method.

Description

technical field [0001] The invention relates to a drill bit, in particular to a preparation method of a wear-free drill bit and the drill bit. Background technique [0002] In the prior art, conventional drill bits, such as twist drills, comprise a cylindrical cutter body provided with at least one helical flute and land, wherein the flute and land follow the helical angle to the front edge. The rear end of the twist drill can be secured, for example, in the chuck of a hand tool or drill press. The cutting edge of the drill bit is generally conical with cutting edges whereby a pair of diametrically opposed cutting edges are bounded by a leading surface of the fluted land and a side of the bit forming the end face of the fluted land. The periphery of each grooved land has at its leading edge a radial protrusion, variously referred to as land, cylindrical land and support edge. The two supporting edges extend the length of the grooved land. [0003] This commonly used drill...

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): B23P15/32B23B51/02
CPCB23B2251/02B23B2251/18B23B2251/50B23B51/02B23B2251/14
Inventor 骆权德
Owner 苏茂均
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap