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Ejection drill with internal drill chip discharge and single drill chip discharging port

A technology of jet suction drilling and internal chip removal, which is applied in the direction of drill repair, drilling tool accessories, drilling/drilling equipment, etc., which can solve the problems of increased use cost and chip blocking accidents, so as to prevent accumulation and improve chip removal capacity , the effect of reducing the cost of use

Inactive Publication Date: 2003-01-29
王峻
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ejector drill has the advantages of high blade strength, simple drilling process, and low manufacturing cost, but the actual application proves that the ejector drill also has the following disadvantages: ①The split cutting edge has a chip breaker, and the chip breaker The sharpening requires professional operation technology, and the general users cannot master it, making the tool a one-time use tool, which increases the cost of use for the user.
②The size (height and width) of the chip breaker must be related to the material to be processed, the feed rate per revolution and other factors, so that when the user changes the material of the workpiece or changes the feed rate, chip blocking accidents often occur
③Due to the use of single edge and single chip inlet, there are still some problems in the chip removal ability of the jet suction drill

Method used

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  • Ejection drill with internal drill chip discharge and single drill chip discharging port
  • Ejection drill with internal drill chip discharge and single drill chip discharging port
  • Ejection drill with internal drill chip discharge and single drill chip discharging port

Examples

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Embodiment Construction

[0014] figure 1 Among them, the integrally sintered cemented carbide drill bit 1 and the cavity drill pipe 2 are butt-welded to each other. Two guide bars 3 and a cutting edge 4 are fired on the drill bit 1. The cutting edge 4 has no chip breaker, and the outer edge of the cutting edge 4 There is a chip splitting edge 5 ground behind the edge. The lower semicircle of the lower jaw cavity of the chip outlet 6 extends L=3mm toward the cutting edge 4, and the opening angle α of the chip outlet 6 is 150°.

[0015] In Fig. 2, the guide bar 3 and the cutting edge 4 of the cemented carbide cutting part are wire cutting "T" shaped blades, and the rest of the structure and shape are the same as figure 1 same.

[0016] In Fig. 3, two carbide guide bars 3 and one carbide cutting edge 4 are welded on the steel alloy drill body 8, and the cutting edge 4 has no chip breaker. The shank 9 of the drill body 8 is provided with a square thread 7 for connecting with a drill rod. The outer edg...

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Abstract

An ejection drill with internal discharge of drilling chip and a single chip-discharging outlet features that its drill bit has two guide ridges, a cutting edge and a single chip-discharge outlet, and the said cutting edge has no chip breaker, so simplifying the machining technology of drill bit. Its advantages are long service life and low cost.

Description

Technical field: [0001] The invention relates to an internal chip removal ejector drill, in particular to an inner chip removal ejector drill with a single chip outlet. Background technique: [0002] Existing chip ejection and suction drills in the single chip outlet, such as "Chinese Invention Patent Bulletin" disclosed on July 20, 1994, are 931148227, and the name is called "chip removal deep hole ejection and suction drills in single pipe" The invention patent application is composed of cutting edge, guide bar, drill body and shank. The cutting edge, guide bar and shank are integrally sintered and formed by powder metallurgy molding process. The shank and drill body are welded into one body, or The cutting edge, guide bar, bit body and shank are integrally sintered and formed by powder metallurgy forming process. The ejector drill has the advantages of high blade strength, simple drilling process, and low manufacturing cost, but the actual application proves that the eje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B47/34B23B51/00
Inventor 王峻王磊
Owner 王峻
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