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

A compound cutting drill bit

A composite cutting and cutter head technology, applied in the direction of repairing drills, drilling tool accessories, drilling/drilling equipment, etc. The effect of reducing cutting strength and enhancing stability

Active Publication Date: 2016-03-23
山东新工刀具有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the twist drills used in mechanical processing are composed of chisel edge, cutting edge, helical secondary edge, and side edge. The cutting edge and secondary edge generally have a single structure, and the centering structure is poor. A large amount of heat is easily generated when (milling) a workpiece with higher hardness, which causes the hardness of the cutter head to decrease, causing the wear of the cutter head. It is symmetrical when working, and the cutting amount is generally only tens of microns to 1 mm, so it is difficult to grasp the angle and height during manual grinding. In addition, the precision of these twist drills and the processed holes is unqualified, which is easy to Waste products occur, and at the same time, there is a problem of lifting the workpiece when processing thin workpieces, causing industrial accidents

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
  • A compound cutting drill bit
  • A compound cutting drill bit
  • A compound cutting drill bit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] Such as figure 1 As shown, the drill bit for compound cutting according to the first embodiment of the present invention is a drill bit for compound cutting. The drill bit 2 is connected with the external drilling equipment through the positioning hole 17 or the positioning groove 18, including the tool bit 1. The surface of the tool head 1 facing the cutting direction is the cutting surface 3, the surface on the back side of the top of each cutting surface 3 is the rear cutting surface 4, and the surface on the outer side of the cutting surface 3 is the side cutting surface 5, and the cutting surface 3 and the rear surface are The cutting surface 4 intersects to form a cutting edge 15. On the drill bit 2 of the compound cutting, it is integrated, or connected and formed as a whole to carry out the setting of the following technical solutions. On the inner side of the cutting surface 3 facing the cutting direction, through The arc-shaped protrusion or oblique protrusion...

Embodiment approach 2

[0038] Such as figure 2 As shown, the drill bit of the compound cutting of the second embodiment of the present invention, on the basis of the first embodiment, the cutter head 1 of the present invention is integrally provided with the cutting bit 2 on both sides, the cutting bit 2 The surface facing the cutting direction is the cutting surface 3, the top back side of the cutting surface 3 is the rear cutting surface 4, the outermost surface of the cutting bit 2 is the secondary cutting surface 5, and the cutting surface 3 and the rear cutting surface 4 intersect to form a cutting surface. The cutting edge is provided with a notch edge 14 on the cutting edge, and a groove 13 is formed extending to the rear cutting surface 4. The inner side of the cutting surface 3 protrudes and forms a composite cutting surface. The outermost cutting surface is an anti-crack splitting platform 15 , the raised cutting surface is a high-efficiency cutting table, an arc-shaped protrusion or an o...

Embodiment approach 3

[0041] Such as image 3 Shown, the compound cutting drill bit of the third embodiment of the present invention, on the basis of the first-second embodiment, the cutter head 1 of the present invention is integrally provided with cutting bits 2 at least on opposite sides, The surface facing the cutting direction of the cutting bit 2 is the cutting surface 3, the top and back side of the cutting surface 3 is the rear cutting surface 4, and the outermost surface of the cutting bit 2 is the secondary cutting surface 5, and the cutting surface 3 and the rear cutting surface 4 intersect to form a cutting edge 15, the inner axial center of the cutting surface 3 starts to form a one-stage or multi-stage positioning platform 6 in a manner that the height gradually decreases toward the outside, and the first-stage positioning of the outermost arc-shaped protrusion or oblique protrusion The platform is a reinforced platform, and the composite cutting surface 7 with arc-shaped or oblique p...

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 compound cutting drill head, which has high efficiency, low cost, long service life and easy positioning during drilling, including the cutter head, which is characterized in that it forms an anti-crack splitting table or a high-efficiency splitting table. The definition of the relationship between the height of the cutting table and the inner adjacent high-efficiency cutting table, the angle between the composite cutting surface and the adjacent composite positioning and decomposition table is greater than or equal to 90°, or the angle of the adjacent composite cutting surface The height is greater than or equal to 0.01 mm, or less than four-fifths of the thickness of the chip being discharged, or the height of the product of 9 times the cutting feed rate, or the width of the crack-resistant cutting table is greater than 0.6 mm, or less than or equal to one-third of the tool diameter, or a helical groove is set on the compound cutting surface, and 1 notch edge or 2 stepped edges are set on the drill bit, 3 flat edges, 4 beveled edges, 5 or in A drill point is set at the center of the drill bit.

Description

Technical field: [0001] The invention relates to a compound cutting drill bit, which is used in mechanical processing. Background technique: [0002] At present, the twist drills used in mechanical processing are composed of chisel edge, cutting edge, helical secondary edge, and side edge. The cutting edge and secondary edge generally have a single structure, and the centering structure is poor. A large amount of heat is easily generated when (milling) a workpiece with higher hardness, which causes the hardness of the cutter head to decrease, causing the wear of the cutter head. It is symmetrical when working, and the cutting amount is generally only tens of microns to 1 mm, so it is difficult to grasp the angle and height during manual grinding. In addition, the precision of these twist drills and the processed holes is unqualified, which is easy to Waste products occur, and at the same time, when processing thinner workpieces, there is also the problem of lifting the work...

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): B23B51/00
Inventor 李仕清
Owner 山东新工刀具有限公司