Unlock instant, AI-driven research and patent intelligence for your innovation.

Hollow drill bit and cutting element and its production method

A hollow drill bit, area technology, applied in drill bits, manufacturing tools, drill repairs, etc., can solve the problem of reducing the possibility of metal bond selection, and achieve the effect of increasing the removal amount

Inactive Publication Date: 2012-07-04
TYROLIT SCHLEIFMITTELWERKE SWAROVSKI KG
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, steel extrusion die bars have the disadvantage that the sintering temperature must be lower than the maximum permissible thermal load of the steel, which reduces the selection possibilities of different metal bonds for the cutting element

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
  • Hollow drill bit and cutting element and its production method
  • Hollow drill bit and cutting element and its production method
  • Hollow drill bit and cutting element and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Figures 1 to 8 The individual method steps are shown one after the other in a cross-section of a press mold 1, which has a lower movable press stampel (Press tempel) 2 and a filling space 3, into which the adhesive for producing the cutting element 7 is inserted. Bonding agents and abrasive particles. Die 1 and extrusion die bar 2 and extrusion die bar 6 (see Figure 4 ) is preferably made of graphite. figure 2 Can see charging funnel 4a in it, fills the mixture 4 of bonding agent (metal powder) and diamond abrasive grain wherein, it is packed in the charging space 3 of die 1 (see image 3 ). The upper extrusion die 6 is then inserted into the die 1 , the extrusion die 6 having a recess and thus forming a mold for the cutting edge of the cutting element. In this area, inclined areas are connected, which are inclined by approximately 45° to the pressing direction P. Adjoining these first areas is an inclined second area, which is arranged substantially perpendicul...

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

Hollow drill bit comprises a support disk, around which cutters are mounted whose cutting edges (20) face the direction of rotation. The cutters have abrasive surfaces (21) on either side of the cutting edge, the nearer section (24) of the surface forming an angle of more than 90[deg] with the direction of rotation and the section (25) further from it forming a smaller angle. Independent claims are included for: (A) Cutters as described; and (B) production of the cutters by press-molding a mixture of abrasive particles and binder.

Description

technical field [0001] The invention relates to a hollow drill with a carrier and at least one cutting element, wherein the cutting element is mounted on an end face of the carrier or embedded in the carrier and has a cutting edge protruding in the advancing direction of the cutting element. The invention also relates to a method for producing a core drill. Background technique [0002] Core drills are frequently equipped in the prior art with a plurality of cutting elements consisting of sintered metal parts with abrasive grains (eg diamond) contained therein. In order to position the core drill bit optimally when it is placed on rock or concrete, it is common in the prior art to form the cutting element with a cutting edge protruding in the advancing direction. For example, EP 0 857 552 A2 can be cited here, in which the cross-section of the cutting element has a triangular or roof-shaped form. [0003] In the current production method, the cutting element is produced by...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/46B22F3/12
CPCB22F2005/001B28D1/041B23B51/04B23B51/02
Inventor 斯特凡·诺伊巴赫本亚明·洛赫纳格奥尔格·达克斯尔格哈德·富克斯
Owner TYROLIT SCHLEIFMITTELWERKE SWAROVSKI KG