CN102814532A - Method of V-shaped welding of solid carbide drill and solid carbide drill thereof - Google Patents
Method of V-shaped welding of solid carbide drill and solid carbide drill thereof Download PDFInfo
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- CN102814532A CN102814532A CN2012102720239A CN201210272023A CN102814532A CN 102814532 A CN102814532 A CN 102814532A CN 2012102720239 A CN2012102720239 A CN 2012102720239A CN 201210272023 A CN201210272023 A CN 201210272023A CN 102814532 A CN102814532 A CN 102814532A
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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
What the present invention relates to is a kind of method and solid carbide drill thereof of V-type welding integral carbide drill.
Background technology
The current both at home and abroad way of Digit Control Machine Tool grooved bit is to adopt the whole hard alloy bar to be made at present; All do not use carbide alloy owing to do not play other positions such as coupling part and the handle of a knife of shear action; Material cost is high, and cutter costs an arm and a leg, the serious waste resource.External also have adopt the U to bore or crown drill bit, this two drill bit is cost-saved, can produce D12 diameter drill bit.
Summary of the invention
What the present invention proposed is a kind of method and solid carbide drill thereof of V-type welding integral carbide drill, its objective is the overall performance that improves cutter, reduces the material cost of cutter, widens range of application.
Technical solution of the present invention: solid carbide drill; Its structure comprises drill bit blade, drill handle part; Wherein on drill handle part, establish " V " type welding position; Described " V " place, type welding position is " V " type groove, and the angle of being somebody's turn to do " V " type angle of " V " type groove is 120 °, and the top at " V " type angle is a stress relief grooves.
The method of V-type welding integral carbide drill comprises following processing step:
One, selects corresponding carbide alloy bar K40, cutter hub material 9Crsi;
Two, confirm that by technological requirement the length of drill bit blade 1 is 100mm-103mm, the length 65mm-70mm of drill handle part 3;
Three, the alloy bar bar of a centreless mill abrasive drilling blade is to D16.5mm;
Four, with wire cutting machine cutting bit blade and " V " type welding position on the alloy bar bar; Should " V " type welding position be " V " type groove, " V " type angle of being somebody's turn to do " V " type groove be 120 °; Guarantee " V " type weld part bit position and alloy bar material centres, off-centre≤0.05mm with special fixture;
Five, on drill handle part, mill out one and the equal-sized stress relief grooves of " V " type groove, this stress relief grooves is at the top at " V " type angle, the flute length 13.5mm of stress relief grooves, groove width 5mm, groove depth 5mm;
Six, drill handle part heat treatment, hardness 50HRC;
Seven, the drill bit blade is heated in advance, uses the special-purpose thermal insulation case, and 300 ° of C of the temperature inside the box are incubated 4～6 hours;
Eight, with a special welding jig drill bit shank clamping fixture at the bottom of the high-frequency heating 700 degrees for 5 seconds, sprinkle borax in the "V" type welding parts, being careful not to spill stress relief groove Otherwise shirts and release stress effect is weak, melted, drill blade
from upper guide sleeve clamps down, "V"-type groove and stress relief groove on the positive, heating 900-1000 degrees, the heating time is 10 seconds, so that special copper solder to dissolve the "V" on the welded parts, release the foot switch to stop the high-frequency heating, wait 10 seconds, the tool will be welded removed from the jig! Into the incubator;
Nine, incubator is preheating to 300 ° of C, and the solid carbide drill that welds is advanced incubator, keeps 300 ° of C, and constant temperature 4～6 hours is cut off the electricity supply then automatically, cools off until solid carbide drill.
Advantage of the present invention: employing should technology; Be prone to cut material and common intensity steel for processing; Can reduce the material cost of cutter greatly, finally reduce the cutter price to a great extent, the cutter that this method of using is made; Price is fallen more than 1/3 than whole hard alloy at least, and property retention is unaffected.At home in the machining industry, especially in the digital control processing, because the master uses high-speed cutting; Solid carbide drill is extensively utilized, and the high-speed steel drill market share is more and more littler, of the present invention applying; Ample resources be will practice thrift, very big economic benefit and social benefit brought.
Description of drawings
Accompanying drawing 1 is the structural representation of V-type welding integral carbide drill.
Accompanying drawing 2 is enlarged drawings of the stress relief grooves that mills out of V-type bottom.
Among the figure 1 is drill bit blade, the 2nd, " V " type welding position, the 3rd, drill handle part, the 4th, " V " type angle, the 5th, stress relief grooves.
The specific embodiment
Contrast accompanying drawing 1,2; The structure of solid carbide drill comprises drill bit blade 1, drill handle part 3; Wherein on drill handle part 3, establish V " type welding position 2; described V " angle at " V " type angle 4 at 2 places, type welding position is 120 °, the top at " V " type angle 4 is stress relief grooves 5.
Embodiment
The method of V-type welding D16X165 welded type solid carbide drill comprises following processing step:
One, selects corresponding carbide alloy bar K40 (German blue trifoliate orange), cutter hub material 9Crsi;
Two, confirm drill bit blade 1 length 100mm-103mm, the length 65mm-70mm of drill handle part 3 by technological requirement;
Three, the alloy bar bar of a centreless mill abrasive drilling blade 1 is to D16.5mm;
Four, the stress relief grooves 5 on the illing-drilling head shank 3, flute length 13.5mm, groove width 5mm, groove depth 5mm;
Five, with wire cutting machine cutting bit blade 1 and " V " type welding position 2 on the alloy bar bar;
And guarantee the position and the alloy bar material centres of " V " type welding position 2 with the welding special fixture, and off-centre≤0.05mm, the angle at " V " type angle 4 at 2 places, " V " type welding position is 120 °;
Six, drill handle part 3 heat treatments, hardness 50HRC;
Seven, drill bit blade 1 is heated in advance, uses the special-purpose thermal insulation case, and 300 ° of C are incubated 4～6 hours;
Eight, with a special fixture to drill shank 3 clamping fixture at the bottom of high-frequency heating 700 degrees for 5 seconds, sprinkle borax in V-shaped face, careful not to spill into the stress relief groove, otherwise it will be weak shirts release stress effects, melted, a drill blade guide sleeve from the upper clamp down, so that the overall alloy rods 1 and the cutter body 3 two "V"-shaped groove on the positive, warm 900-1000 degrees, heating time of 10 seconds bell, so dedicated to dissolve copper solder "V" type welding parts 2, release the foot switch to stop high-frequency heating, wait 10 seconds to welded tool removed from the jig! Into the incubator; cooling; coherent whole process, with special attention soldering temperature is not too high, otherwise it will have a "burnt" phenomenon, increased brittleness drill blade, forming fracture;
Nine, incubator is preheating to 300 ° of C, and the solid carbide drill that welds is advanced incubator, keeps 300 ° of C, and constant temperature 4～6 hours is cut off the electricity supply then automatically, cools off until solid carbide drill.
Guarantee symmetry during the cutting of " V " type connection part separated time, promptly center and bar center are consistent basically at the bottom of " V " type, and deviation can not be big.
" V " type groove at set 2 places, " V " type welding position on the drill handle part 3 mills out the groove of a corresponding size, and this groove is called as stress relief grooves.This is to eliminate to weld to heat and different materials coefficient of thermal expansion generation stress, prevents the key technology that ftractures.
The preheating of carbide alloy bar played equally and reduced stress, prevents the effect of ftractureing.
The welding special fixture guarantees that drill bit blade 1, drill handle part 3 linearitys are good.
The temperature of welding back insulation and temperature retention time play a part to eliminate welding residual stress equally, effectively prevent the cutter cracking.
The rapidoprint scope that the present invention is fit to: aluminium alloy, cast iron, magnesium iron, common intensity steel.
Be suitable for tool specification: Φ 10～Φ 25.
Claims (4)
1. solid carbide drill; It is characterized in that structure comprises drill bit blade, drill handle part; Wherein on drill handle part, establish " V " type welding position; Described " V " place, type welding position is " V " type groove, and the angle of being somebody's turn to do " V " type angle of " V " type groove is 120 °, and the top at " V " type angle is a stress relief grooves.
2.V the method for type welding integral carbide drill is characterized in that comprising following processing step:
One, selects corresponding carbide alloy bar K40, cutter hub material 9Crsi;
Two, confirm that by technological requirement the length of drill bit blade is 100mm-103mm, the length 65mm-70mm of drill handle part 3;
Three, the alloy bar bar of a centreless mill abrasive drilling blade is to D16.5mm;
Four, with wire cutting machine cutting bit blade and " V " type welding position on the alloy bar bar; Should " V " type welding position be " V " type groove, " V " type angle of being somebody's turn to do " V " type groove be 120 °; Guarantee " V " type weld part bit position and alloy bar material centres, off-centre≤0.05mm with special fixture;
Five, on drill handle part, mill out one and the equal-sized stress relief grooves of " V " type groove, this stress relief grooves is at the top at " V " type angle, the flute length 13.5mm of stress relief grooves, groove width 5mm, groove depth 5mm;
Six, drill handle part heat treatment, hardness 50HRC;
Seven, the drill bit blade is heated in advance, uses the special-purpose thermal insulation case, and 300 ° of C of the temperature inside the box are incubated 4～6 hours;
Eight, with a special welding jig drill bit shank clamping fixture at the bottom of the high-frequency heating 700 degrees for 5 seconds, sprinkle borax in the "V" type welding parts, being careful not to spill stress relief groove Otherwise shirts and release stress effect is weak, melted, drill blade
from upper guide sleeve clamps down, "V"-type groove and stress relief groove on the positive, heating 900-1000 degrees, the heating time is 10 seconds, so that special copper solder to dissolve the "V" on the welded parts, release the foot switch to stop the high-frequency heating, 10 seconds later removed from the jig, and then welded Drill into the incubator;
Nine, incubator is preheating to 300 ° of C, and the solid carbide drill that welds is advanced incubator, keeps 300 ° of C, and constant temperature 4～6 hours is cut off the electricity supply then automatically, cools off until solid carbide drill.
3. the method for V-type welding integral carbide drill according to claim 2 is guaranteed symmetry when it is characterized in that the cutting of " V " type weld part bit line, and promptly center and bar center are consistent at the bottom of " V " type.
4. the method for V-type welding integral carbide drill according to claim 2 is characterized in that welding special fixture and should guarantee that drill bit blade, drill handle part linearity are good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210272023.9A CN102814532B (en) | 2012-08-02 | 2012-08-02 | Method of V-shaped welding of solid carbide drill and solid carbide drill thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210272023.9A CN102814532B (en) | 2012-08-02 | 2012-08-02 | Method of V-shaped welding of solid carbide drill and solid carbide drill thereof |
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| CN102814532A true CN102814532A (en) | 2012-12-12 |
| CN102814532B CN102814532B (en) | 2014-04-16 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990907A (en) * | 2014-04-14 | 2014-08-20 | 河源普益硬质合金厂有限公司 | High-temperature vacuum hard alloy welding method |
| CN105290634A (en) * | 2014-07-17 | 2016-02-03 | 通用汽车环球科技运作有限责任公司 | Weld for differential assembly |
| CN105599074A (en) * | 2015-12-21 | 2016-05-25 | 浙江浪潮精密机械有限公司 | Carbide drill and machining process thereof |
| CN106271490A (en) * | 2016-08-27 | 2017-01-04 | 杭州比诺精密工具有限公司 | The preparation method of rustless steel whole hard alloy tricuspid step drill cutter |
| CN108213474A (en) * | 2017-12-11 | 2018-06-29 | 深圳市鑫运祥精密刀具有限公司 | A kind of carbide bit and welding method |
| CN111515800A (en) * | 2020-04-28 | 2020-08-11 | 厦门厦芝科技工具有限公司 | V-arrangement welded structure processing and counterpoint verifying attachment of drill bit |
| CN112705742A (en) * | 2020-12-22 | 2021-04-27 | 卡孚精密科技(嘉兴)有限公司 | Alloy cutter and machining process thereof |
| CN113631307A (en) * | 2019-03-26 | 2021-11-09 | 三菱综合材料株式会社 | Base material for hard sintered body, and cutting tool |
| CN115026524A (en) * | 2022-07-08 | 2022-09-09 | 泰州虹康电子科技有限公司 | Production process of high-strength drill bit |
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| CN2650927Y (en) * | 2003-09-30 | 2004-10-27 | 东风康明斯发动机有限公司 | Welded hard-alloy parabolic bit |
| CN201164910Y (en) * | 2007-05-31 | 2008-12-17 | 张文锦 | Medium and small sized sintered carbide tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103990907A (en) * | 2014-04-14 | 2014-08-20 | 河源普益硬质合金厂有限公司 | High-temperature vacuum hard alloy welding method |
| CN105290634A (en) * | 2014-07-17 | 2016-02-03 | 通用汽车环球科技运作有限责任公司 | Weld for differential assembly |
| CN105599074A (en) * | 2015-12-21 | 2016-05-25 | 浙江浪潮精密机械有限公司 | Carbide drill and machining process thereof |
| CN105599074B (en) * | 2015-12-21 | 2017-12-15 | 浙江浪潮精密机械有限公司 | A kind of carbide drill and its processing technology |
| CN106271490A (en) * | 2016-08-27 | 2017-01-04 | 杭州比诺精密工具有限公司 | The preparation method of rustless steel whole hard alloy tricuspid step drill cutter |
| CN108213474A (en) * | 2017-12-11 | 2018-06-29 | 深圳市鑫运祥精密刀具有限公司 | A kind of carbide bit and welding method |
| CN113631307A (en) * | 2019-03-26 | 2021-11-09 | 三菱综合材料株式会社 | Base material for hard sintered body, and cutting tool |
| CN113631307B (en) * | 2019-03-26 | 2024-04-26 | 三菱综合材料株式会社 | Base material for hard sintered body, and cutting tool |
| CN111515800A (en) * | 2020-04-28 | 2020-08-11 | 厦门厦芝科技工具有限公司 | V-arrangement welded structure processing and counterpoint verifying attachment of drill bit |
| CN112705742A (en) * | 2020-12-22 | 2021-04-27 | 卡孚精密科技(嘉兴)有限公司 | Alloy cutter and machining process thereof |
| CN115026524A (en) * | 2022-07-08 | 2022-09-09 | 泰州虹康电子科技有限公司 | Production process of high-strength drill bit |
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Owner name: NANJING XINDAKE TOOL TECHNOLOGY DEVELOPMENT CO., L Free format text: FORMER OWNER: TAIXING X DAKE CUTTING TOOL CO., LTD. Effective date: 20140902 |
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Free format text: CORRECT: ADDRESS; FROM: 225441 TAIZHOU, JIANGSU PROVINCE TO: 211111 NANJING, JIANGSU PROVINCE |
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Effective date of registration: 20140902 Address after: Jiangning District of Nanjing City, Jiangsu province 211111 streets moling Road No. 12 mo Zhou Patentee after: Nanjing Xindake Tool Technology Development Co., Ltd. Address before: 225441, No. 7 East Road, Dasheng Town, Taizhou City, Jiangsu, Taixing Patentee before: Taizhou X-Dake Cutting Tool Co., Ltd. |
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Effective date of registration: 20190423 Address after: 225441 Huasheng Road, Dasheng Village, Jichuan Street, Taixing City, Jiangsu Province Patentee after: Jiangsu XinDa Tools Technology Co., Ltd. Address before: 211111 No. 12, Mazhou East Road, Mau Ling Street, Jiangning District, Nanjing, Jiangsu Patentee before: Nanjing Xindake Tool Technology Development Co., Ltd. |