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Combined-edge center drill or combined-edge countersink

A countersink drilling and compound cutting technology, which is applied in the direction of center drilling, drilling/drilling equipment, drilling repair, etc., can solve the problems of prone to waste products, poor centering structure, and unqualified precision

Inactive Publication Date: 2014-04-09
李仕清
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  • 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, secondary edge and side edge. The cutting edge and secondary edge generally have a single structure, and the centering structure is poor. These twist drills are extremely undurable, especially in drilling ( When milling a workpiece with high hardness, it is easy to generate a large amount of heat, which causes the hardness of the cutter head to decrease, causing the wear of the cutter head. At the same time, the cutter head also has the defect of being easy to break. It is symmetrical, and the cutting amount is generally only tens of microns to about 1 mm, so it is difficult to grasp the angle and height during manual grinding. At the same time, when processing hard workpieces, there are also problems of cutting edge chipping or cutter head chipping, resulting in work-related accidents

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0040] Such as figure 1 , figure 2 , image 3 , Figure 22-Figure 29As shown, the embodiment of the compound edge center drill or the compound edge countersink drill on the center drill without the protective cone of the first embodiment of the present invention mainly relates to the center drill or countersink for machining, including the tool head, The tool head is integrally provided with a front cutting cone 29 and a rear cutting cone 30, and a front cutter body 31 is integrally arranged between the front cutting cone 29 and the rear cutting cone 30, and the rear portion of the rear cutting cone 30 is a rear cutter body 32, and the front The cutting cone 29, the front cutter body and the rear cutting cone 30 are respectively composed of a plurality of integral cutting blades or cutting blade bodies 2, and the edge facing the outer side of the cutting direction of each cutting blade or cutting blade body 2 is formed as a secondary cutting blade. Edge 14, the surface fac...

Embodiment approach 2

[0044] Such as Figure 4 , Figure 5 , Image 6 , Figure 22-Figure 29 As shown, the compound edge center drill or the compound edge countersink drill of the second embodiment of the present invention is on the embodiment of the center drill with a protective cone. On the basis of the first embodiment, this embodiment includes a cutter head, a cutter head A front cutting cone 29 and a rear cutting cone 30 are integrally provided with, and a front cutter body 31 is integrally arranged between the front cutting cone 29 and the rear cutting cone 30, and the rear portion of the rear cutting cone 30 is a rear cutter body 32, and the front cutting cone 29. The front cutter body and the rear cutting cone 30 are respectively composed of a plurality of integral cutting blades or cutting cutter bodies 2, and a protective cone 33 is integrally arranged between the front cutter body 31 and the rear cutting cone 30, and the protective cone 33 The surface on the outer side is the rear co...

Embodiment approach 3

[0047] Such as Figure 7 , Figure 8 , Figure 9 , Figure 22-Figure 29As shown, the embodiment of the compound edge center drill or the compound edge countersink drill on the arc-shaped center drill of the third embodiment of the present invention, on the basis of the first - second embodiment, this embodiment includes a tool head, a tool The head is integrally provided with a front cutting cone 29 and an arc-shaped cutting cone 34, and a front cutter body 31 is integrally arranged between the front cutting cone 29 and the arc-shaped cutting cone 34, and the rear portion of the arc-shaped cutting cone 34 is a rear cutter body 32 , the front cutting cone 29, the front cutter body 31 and the arc cutting cone 34 are respectively composed of a plurality of cutting blades or cutting blade bodies 2 integrally, and the surface on the outer side of the arc cutting cone 34 is an arc rear cone surface 36. The face in the cutting direction is the cutting face 7, which intersects with...

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Abstract

The invention provides a combined-edge center drill or combined-edge countersink and mainly relates to a machining twist drill for machining. The combined-edge center drill or combined-edge countersink is high in stability, high in radiating efficiency, long in service life and easy to position for drilling. The combined-edge center drill or combined-edge countersink is characterized in that cutting faces in the rotation direction are provided with at least one level of bottom or lateral various inner bevel cutting faces or various combined cutting faces in the manners of triangular grooves, or trapezoidal grooves, or arc triangular grooved indentations, or arc triangular grooved indentations, or arc projections or bevel projecting indentations; the inner bevel cutting faces or combined cutting faces have included angles of larger than 90 degrees and smaller than 180 degrees with the cutting faces or combined cutting faces; or by means of arc projections or bevel projecting upright extensions, the cutting faces are provide with combined positioning decomposition steps, intersecting with the inner combined cutting faces, and various inner bevel edges, or lateral indented edges or lateral bevel edges. Therefore, cutting stress inclines inwards, arms of force are reduced, outer cutting resistance is decomposed, cutting efficiency of the combined-edge center drill or combined-edge countersink is maximized, the service life of the combined-edge center drill or combined-edge countersink is maximally prolonged, the cost is reduced, and resources are saved.

Description

Technical field: [0001] The invention relates to a compound edge center drill or a compound edge countersink, which is used in drilling machine processing and fitter maintenance. Background technique: [0002] At present, the twist drills used in mechanical processing are composed of chisel edge, cutting edge, secondary edge and side edge. The cutting edge and secondary edge generally have a single structure, and the centering structure is poor. These twist drills are extremely undurable, especially in drilling ( When milling a workpiece with high hardness, it is easy to generate a large amount of heat, which causes the hardness of the cutter head to decrease, causing the wear of the cutter head. At the same time, the cutter head also has the defect of being easy to break. It is symmetrical, and the cutting amount is generally only tens of microns to about 1 mm, so it is difficult to grasp the angle and height during manual grinding. At the same time, when processing harder...

Claims

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Application Information

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IPC IPC(8): B23B51/00
CPCB23B51/0063B23B51/10
Inventor 李仕清
Owner 李仕清
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