Drill bit water combined integrate inserts

A combined drill technology, which is applied in drilling tool accessories, drill repairing, manufacturing tools, etc., can solve the problem of insufficient hole precision after machining

Inactive Publication Date: 2002-08-21
KORLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned newly developed combined drill mainly used the method of using two inserts at first, but compared with th

Method used

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  • Drill bit water combined integrate inserts
  • Drill bit water combined integrate inserts
  • Drill bit water combined integrate inserts

Examples

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Embodiment Construction

[0019] The drill bit with combined integral insert related to the preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Such as figure 1 as well as figure 2 As shown, the drill 100 according to the preferred first embodiment of the present invention has a drill body 120 and a drill insert 140 detachably attached to the front end of the drill body 120 .

[0021] The drill body 120 has a shank 122 for fixing the drill to a machine tool (not shown) or a spindle, and a cutting edge 124 extending helically from the shank 122 to the front end of the drill body 120 . On the radially outer side of the cutting edge 124, a spiral groove-shaped flute 126 is formed. A chip flute 126 is formed between the shank 122 and the front end of the drill body 120 for chip discharge and cutting fluid supply.

[0022] Inside the front end of the drill main body 120, an insert base 125 for attaching the drill insert 14...

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Abstract

The present invention relates to an economical combined type solid drill capable of improving the bonded structure of the combined type solid insert detachable installed on the front end of the drill body, having the advantages of high working accuracy and low cost, and only the condemned insert should be replaced. The bottom surface of the insert base formed on the front end of the drill body is opposite to the bottom surface for detachable installing the insert on the insert base, to form a V-shaped bottoms. The screw holes, for screwing up the holding screw used for supporting the insert, are designed to three-dimensional cone. When the insert is installed on the front end of the drill body, well centering action can be obtained and the manufacturing process is easy, tightening force is satisfying.

Description

technical field [0001] The present invention relates to a drilling tool for hole machining in cutting machining, and more particularly to an economical combined integral drill bit by improving the performance of a combined integral insert which can be detachably mounted on the front end of the drill body. The connection structure can obtain excellent processing accuracy, low manufacturing cost, and only scrapped inserts can be replaced. Background technique [0002] Drills are tools used to drill holes in workpieces. The first drills were integral drills, and the main body, flutes for chip discharge, and cutting edge were made of the same material. However, in order to save tool costs, by making the cutting edge of the drill into an insert, a method of using the main body of the drill as it is when the insert is scrapped, and only replacing the original insert with a new insert has been developed. Combined drill. The above-mentioned newly developed combined drill mainly us...

Claims

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Application Information

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IPC IPC(8): B23B51/00
Inventor 金永钦李棺熙金学规金璟培
Owner KORLOY
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