Method of V-shaped welding of solid carbide drill and solid carbide drill thereof
A solid carbide and drill technology, used in drilling/drilling equipment, components of boring machines/drilling machines, drilling repairs, etc., can solve the problems of high material cost, expensive tools, waste of resources, etc. The effect of reducing tool prices, large economic benefits and social benefits
Active Publication Date: 2014-04-16
江苏信达克工具技术有限公司
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Problems solved by technology
[0002] At present, the current method of CNC machine tool drilling bits at home and abroad is to use solid carbide rods to make them. The tool handles are all made of hard alloy, the cost of materials is high, the price of the tool is expensive, and it is a serious waste of resources
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[0021] The method for V-shaped welding D16X165 welded solid carbide drill bits comprises the following process steps:
[0022] 1. Select the corresponding cemented carbide bar K40 (German blue trifoliate), and the cutter body material is 9Crsi;
[0023] 2. According to the process requirements, determine the length of the drill bit blade 1 from 100mm-103mm, and the length of the drill bit shank 3 from 65mm-70mm;
[0024] 3. Coreless grinding the alloy bar material of the cutting edge 1 of the drill bit, to D16.5mm;
[0025] 4. The stress relief groove 5 on the shank 3 of the milling bit, the groove length is 13.5mm, the groove width is 5mm, and the groove depth is 5mm;
[0026] 5. Use a wire cutting machine to cut the drill bit edge 1 and the "V"-shaped welding part 2 on the alloy bar;
[0027] And use a special welding fixture to ensure that the position of the "V"-shaped welding part 2 is concentric with the center of the alloy rod material, and the eccentricity is ≤0.05mm...
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Abstract
The invention discloses a method of V-shaped welding of a solid carbide drill and the solid carbide drill of the method. The V-shaped welding method comprises the following steps of: selecting corresponding hard alloy bar stocks; determining the lengths of a drill blade part and a drill handle part; carrying out centreless grinding to alloy bar stocks of the drill blade part; cutting the drill blade parts and V-shaped welding parts on the alloy bar stocks by a wire cutting machine; milling a stress relief groove; carrying out heat treatment to the drill handle part, wherein the hardness is 50HRC (rockwell hardness C); carrying out pre-heating to the drill blade part; clamping the drill handle part at the bottom of a special welding fixture by the special welding fixture, and carrying out high-frequency heating; and carrying out heat preservation to the welded solid carbide drill. The structure of the solid carbide drill is as follows: a V-shaped welding part, which is a V-shaped groove, is arranged at the drill handle part, the V-shaped angle is 120 degrees, and the top of the V-shaped angle is the stress relief groove. The method of the V-shaped welding of the solid carbide drill has the following advantages that: the material cost of cutting tools is reduced, and the integral performance is improved. The solid carbide drill is widely applied, so that a large quantity of resources can be saved, and great economic and social benefits can be obtained.
Description
technical field [0001] The invention relates to a method for V-shaped welding solid carbide drill bits and the solid carbide drill bits thereof. Background technique [0002] At present, the common method of drilling drill bits for CNC machine tools at home and abroad is to use solid carbide rods to make them. Since other parts that do not play a cutting role, such as connecting parts and tool handles, are made of cemented carbide, the material cost is high and the tool price is expensive. , a serious waste of resources. There are also U drills or crown drills abroad. These two drills can save costs and can produce D12 diameter drills. Contents of the invention [0003] The invention proposes a method for V-shaped welding solid carbide drill bit and the solid carbide drill bit thereof, the purpose of which is to improve the overall performance of the tool, reduce the material cost of the tool, and broaden the application range. [0004] Technical solution of the presen...
Claims
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IPC IPC(8): B23B51/00B23P15/28B23K33/00
Inventor 王伟
Owner 江苏信达克工具技术有限公司