CN101653905A - Method for manufacturing drilling bit - Google Patents
Method for manufacturing drilling bit Download PDFInfo
- Publication number
- CN101653905A CN101653905A CN200910184514A CN200910184514A CN101653905A CN 101653905 A CN101653905 A CN 101653905A CN 200910184514 A CN200910184514 A CN 200910184514A CN 200910184514 A CN200910184514 A CN 200910184514A CN 101653905 A CN101653905 A CN 101653905A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- grinding
- tempering
- minutes
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention belongs to the manufacturing field drilling bits, in particular a method for manufacturing a drilling bit. The method for manufacturing the drilling bit comprises the steps of snagging,slot rolling, cutting and sharpening, coarse grinding before heat treatment, heat treatment, coarse grinding of excircle, handle flat head chamfering, opening, fine grinding of excircle, edge finishing and cleaning. The invention has the advantages of low cost, excellent performance and longer service life.
Description
Technical field
The invention belongs to drill bit and make field, especially a kind of method of making drill bit.
Background technology
Present drill bit is made up of helicla flute part and shank, general drill bit is by rolling formation, rolling brill is bar to be heated go out helicla flute with roll pressed, its advantage is the production efficiency height, material fiber is not cut off after the hot rolling, the good physical performance of finished product, save material and save emery wheel consumption, shortcoming is that the helicla flute rough surface influences bits, and it is poor that the helicla flute cross section geometric forms, precision is low, and two helicla flute symmetry usually do not reach standard and scrap, can only be used for coarse processing, along with the raising of processing request, although rolling brill has good physical performance, the durability height, advantage of low manufacturing cost can will progressively be eliminated because of low precision.
Summary of the invention
The present invention is directed to that rolling auger shell spin slot rough surface, drill bit can't be used for accurately machined shortcoming in the above-mentioned technology, propose a kind of method of making drill bit, the drill bit that utilizes the method to make is sharp, can be used for fine finishining.
Realize that technical scheme of the present invention is as follows:
Make the method for drill bit, it is characterized in that: this method step is as follows,
A, snagging are carried out grinding with the coarse fodder steel, grind off surperficial casting skin, make coarse fodder steel smooth surface not have screw-like, do not have the burn phenomenon, obtain blank after the grinding, are removing pigment and greasy dirt;
B, roll groove, be rolled groove with obtaining blank in a step on roll mill, obtain having the workpiece 1 of flute, the difference of 1 liang of leaf of workpiece is smaller or equal to 0.10 millimeter, unbearable symmetry δ
3Smaller or equal to 0.25 millimeter, the point of contact of circular arc and main cutting edge throwing shape line is lower than drill axis at the bottom of the flute, and working portion is to the circular radial jumping amount δ of axis
1Smaller or equal to 0.25 millimeter;
C, cutting sharpening, the workpiece 1 that the b step is obtained cuts into the workpiece 2 of needed length L, and the sharpening angle is 118 ℃---122 ℃;
D, cylindrical grinding burr carry out grinding with the external diameter of the workpiece 2 that obtains in the c step, make workpiece 2 smooth surfaces not have screw thread, do not have burn;
The workpiece 2 that obtains in the d step is heat-treated in e, heat treatment, and heat treated step is as follows,
(1), preheating, be preheating in 800 ℃-860 ℃ the salt bath in temperature, the time is the twice of required heat time heating time, the salt bath composition is the NaCl of 70%BaCl and 30%;
(2), the heating, in high-temperature salt bath, carry out, salt temperature is 1200 ℃-1300 ℃, the salt bath composition is 100%BaCl;
(3), the cooling, in low temperature salt-bath, carry out, 500 ℃-600 ℃ of temperature, the time is identical with heat time heating time, the salt bath composition is 50%KNO
3And 50%NaNO
2
(4), tempering, workpiece 2 is carried out tempering, temperature is 500 ℃-600 ℃, the salt bath composition is 100%NaNO
3Perhaps 100%KNO
3, times of tempering 3-4 time, each 60 minutes of tempering time must coldly can be carried out tempering next time to room temperature after each tempering, and the tempering rank is the 1-1.5 level;
F, corase grind cylindrical carry out grinding with workpiece 2 once more;
G, shank flat head chamfering, the shank end face car of workpiece 2 is flat, and end face is vertical with center line of bit, and chamfering is even, no prismatic shape, chamfering 1*45 °;
H, opening make cutting edge sharp workpiece 2 openings, and two main cutting edges are straight and be symmetrical in the working portion axis, and chisel edge is by the working portion axis, and main cutting edge is to the oblique round jumping amount δ of working portion
2Smaller or equal to 0.18 millimeter;
I, correct grinding cylindrical obtain workpiece 2 with h in the step and finish grind cylindrical;
Grinding is carried out on workpiece 2 surfaces in j, clear limit, makes its no blackspot in surface and burn phenomenon, obtains drill bit;
K, nitrogenize are carried out nitrogenize with drill bit, and step is as follows,
(1) deoil, boiled 30 minutes in the aqueous solution of 8% sodium carbonate and 2% tertiary sodium phosphate, workpiece is rinsed well with running water after going out oil cauldron;
(2) pickling, pickling is 3 minutes-5 minutes in the hydrochloric acid solution of 20%-25%, rinses well with running water after the workpiece pickling;
(3) clean, in 4% detergent solution, boiled 8 minutes-10 minutes;
(4) workpiece is gone in 500 ℃-600 ℃ the nitriding furnace to keep 3.5 to 4.5 hours, and drips ammoniacal liquor on workpiece, the ammoniacal liquor amount of dripping be 100-150 drip/minute;
1, cleans, wash the dirt on the drill bit.
Described cleaning agent is a metal cleaner.
The drill bit that adopts said method to make, on rolling tool, polish, surface roughness at the bottom of the raising groove, a groove, land and cylindrical quench after grinding forms, thereby it does not destroy metallic fiber, add that remainder mill amount is little, be unlikely to produce drill bit annealing phenomenon, make its land abundant again, intensity increases, and cutting edge is sharp.Useful benefit of the present invention is that cost is low, and performance is more excellent, long service life.
The specific embodiment
Make the method for drill bit, it is characterized in that: this method step is as follows, with outside dimension is
A, snagging are carried out grinding with the coarse fodder steel, grind off surperficial casting skin, make coarse fodder steel smooth surface not have screw-like, do not have the burn phenomenon, obtain blank after the grinding, are removing pigment and greasy dirt;
B, roll groove, be rolled groove with obtaining blank in a step on roll mill, obtain having the workpiece 1 of flute, the difference of 1 liang of leaf of workpiece is smaller or equal to 0.10 millimeter, unbearable symmetry δ
3Smaller or equal to 0.25 millimeter, the point of contact of circular arc and main cutting edge throwing shape line is lower than drill axis at the bottom of the flute, and working portion is to the circular radial jumping amount δ of axis
1Smaller or equal to 0.25 millimeter;
C, cutting sharpening, the workpiece 1 that the b step is obtained cuts into the workpiece 2 of needed length L, and the sharpening angle is 120 ℃;
D, cylindrical grinding burr carry out grinding with the external diameter of the workpiece 2 that obtains in the c step, make workpiece 2 smooth surfaces not have screw thread, do not have burn;
The workpiece 2 that obtains in the d step is heat-treated in e, heat treatment, and heat treated step is as follows,
(1), preheating, be preheating in 800 ℃ the salt bath in temperature, the time is the twice of required heat time heating time, the salt bath composition is the NaCl of 70%BaCl and 30%;
(2), the heating, in high-temperature salt bath, carry out, salt temperature is 1200 ℃, the salt bath composition is 100%BaCl;
(3), the cooling, in low temperature salt-bath, carry out, 500 ℃ of temperature, the time is identical with heat time heating time, the salt bath composition is 50%KNO
3And 50%NaNO
2
(4), tempering, workpiece 2 is carried out tempering, temperature is 600 ℃, the salt bath composition is 100%NaNO
3Perhaps 100%KNO
3, times of tempering 4 times, each 60 minutes of tempering time must be cold after each tempering can be carried out tempering next time to room temperature;
F, corase grind cylindrical carry out grinding with workpiece 2 once more;
G, shank flat head chamfering, the shank end face car of workpiece 2 is flat, and end face is vertical with center line of bit, and chamfering is even, no prismatic shape, chamfering 1*45 °;
H, opening make cutting edge sharp workpiece 2 openings, and two main cutting edges are straight and be symmetrical in the working portion axis, and chisel edge is by the working portion axis, and main cutting edge is to the oblique round jumping amount δ of working portion
2Smaller or equal to 0.18 millimeter;
I, correct grinding cylindrical obtain workpiece 2 with h in the step and finish grind cylindrical;
Grinding is carried out on workpiece 2 surfaces in j, clear limit, makes its no blackspot in surface and burn phenomenon, obtains drill bit;
K, nitrogenize are carried out nitrogenize with drill bit, and step is as follows,
(1) deoil, boiled 30 minutes in the aqueous solution of 8% sodium carbonate and 2% tertiary sodium phosphate, workpiece is rinsed well with running water after going out oil cauldron;
(2) pickling, pickling is 5 minutes in the hydrochloric acid solution of 20%-25%, rinses well with running water after the workpiece pickling;
(3) clean, in 4% metal cleaner solution, boiled 10 minutes;
(4) workpiece is gone in 500 ℃-600 ℃ the nitriding furnace to keep 4 hours, and drip ammoniacal liquor on workpiece, the ammoniacal liquor amount of dripping is 150 droplets/minute;
1, cleans, wash the dirt on the drill bit.
Claims (2)
1, make the method for drill bit, it is characterized in that: this method step is as follows,
A, snagging are carried out grinding with the coarse fodder steel, grind off surperficial casting skin, make coarse fodder steel smooth surface not have screw-like, do not have the burn phenomenon, obtain blank after the grinding, are removing pigment and greasy dirt;
B, roll groove, be rolled groove with obtaining blank in a step on roll mill, obtain having the workpiece 1 of flute, the difference of 1 liang of leaf of workpiece is smaller or equal to 0.10 millimeter, unbearable symmetry δ
3Smaller or equal to 0.25 millimeter, the point of contact of circular arc and main cutting edge throwing shape line is lower than drill axis at the bottom of the flute, and working portion is to the circular radial jumping amount δ of axis
1Smaller or equal to 0.25 millimeter;
C, cutting sharpening, the workpiece 1 that the b step is obtained cuts into the workpiece 2 of needed length L, and the sharpening angle is 118 ℃-122 ℃;
D, cylindrical grinding burr carry out grinding with the external diameter of the workpiece 2 that obtains in the c step, make workpiece 2 smooth surfaces not have screw thread, do not have burn;
The workpiece 2 that obtains in the d step is heat-treated in e, heat treatment, and heat treated step is as follows,
(1), preheating, be preheating in 800 ℃-860 ℃ the salt bath in temperature, the time is the twice of required heat time heating time, the salt bath composition is the NaCl of 70%BaCl and 30%;
(2), the heating, in high-temperature salt bath, carry out, salt temperature is 1200 ℃-1300 ℃, the salt bath composition is 100%BaCl;
(3), the cooling, in low temperature salt-bath, carry out, 500 ℃-600 ℃ of temperature, the time is identical with heat time heating time, the salt bath composition is 50%KNO
3And 50%NaNO
2
(4), tempering, workpiece 2 is carried out tempering, temperature is 500 ℃-600 ℃, the salt bath composition is 100%NaNO
3Perhaps 100%KNO
3, times of tempering 3-4 time, each 60 minutes of tempering time must be cold after each tempering can be carried out tempering next time to room temperature;
F, corase grind cylindrical carry out grinding with workpiece 2 once more;
G, shank flat head chamfering, the shank end face car of workpiece 2 is flat, and end face is vertical with center line of bit, and chamfering is even, no prismatic shape, chamfering 1*45 °;
H, opening make cutting edge sharp workpiece 2 openings, and two main cutting edges are straight and be symmetrical in the working portion axis, and chisel edge is by the working portion axis, and main cutting edge is to the oblique round jumping amount δ of working portion
2Smaller or equal to 0.18 millimeter;
I, correct grinding cylindrical obtain workpiece 2 with h in the step and finish grind cylindrical;
Grinding is carried out on workpiece 2 surfaces in j, clear limit, makes its no blackspot in surface and burn phenomenon, obtains drill bit;
K, nitrogenize are carried out nitrogenize with drill bit, and step is as follows,
(1) deoil, boiled 30 minutes in the aqueous solution of 8% sodium carbonate and 2% tertiary sodium phosphate, workpiece is rinsed well with running water after going out oil cauldron;
(2) pickling, pickling is 3 minutes-5 minutes in the hydrochloric acid solution of 20%-25%, rinses well with running water after the workpiece pickling;
(3) clean, in 4% detergent solution, boiled 8 minutes-10 minutes;
(4) workpiece is gone in 500 ℃-600 ℃ the nitriding furnace to keep 3.5 to 4.5 hours, and drips ammoniacal liquor on workpiece, the ammoniacal liquor amount of dripping be 100-150 drip/minute;
2, want the method for 1 described manufacturing drill bit according to right, it is characterized in that: described cleaning agent is a metal cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910184514A CN101653905A (en) | 2009-08-28 | 2009-08-28 | Method for manufacturing drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910184514A CN101653905A (en) | 2009-08-28 | 2009-08-28 | Method for manufacturing drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101653905A true CN101653905A (en) | 2010-02-24 |
Family
ID=41708468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910184514A Pending CN101653905A (en) | 2009-08-28 | 2009-08-28 | Method for manufacturing drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101653905A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703911A (en) * | 2012-06-29 | 2012-10-03 | 长沙黑金刚实业有限公司 | Heat treatment method for down-the-hole drill bit of high-wind pressure drilling tool, and drill bit |
| CN102837169A (en) * | 2011-06-21 | 2012-12-26 | 祁成 | Production method of milling cutter |
| CN103223579A (en) * | 2013-04-16 | 2013-07-31 | 常熟市三骏精密刃具制造厂 | Manufacturing method of milling cutter |
| CN104209720A (en) * | 2014-09-19 | 2014-12-17 | 马鞍山邦斯科自动化科技有限公司 | Manufacturing method of heat-resistant rock drill bit |
| CN104481409A (en) * | 2014-09-19 | 2015-04-01 | 马鞍山邦斯科自动化科技有限公司 | Manufacturing method of rock drill |
| CN105134082A (en) * | 2015-07-24 | 2015-12-09 | 盐城市鑫源铜业有限公司 | Heavy-duty annular drill bit and manufacturing method for same |
| CN105397438A (en) * | 2015-12-31 | 2016-03-16 | 武汉江钻恒立工程钻具股份有限公司 | Manufacture method of way-type drilling unit |
| CN106181279A (en) * | 2016-08-10 | 2016-12-07 | 台州华达工量具制造有限公司 | A kind of processing technique of cutter head changeable type depth drill |
| CN106670550A (en) * | 2015-11-05 | 2017-05-17 | 扬州市实力五金工具工贸有限公司 | Drilling and chamfering synthesis tool and manufacturing method thereof |
| CN107363203A (en) * | 2017-07-21 | 2017-11-21 | 江苏军威电子科技有限公司 | A kind of cold-heading molding technique of drill bit |
| CN108070820A (en) * | 2017-12-22 | 2018-05-25 | 江雨仙 | T7 steel blades and its intensifying method |
| CN109773437A (en) * | 2019-03-26 | 2019-05-21 | 丹阳市丹鹰工具制造有限公司 | A kind of processing technology of drill |
| CN110369979A (en) * | 2019-08-19 | 2019-10-25 | 丹阳河工工具有限公司 | A kind of processing technology of anti-breaking type screw tap |
| CN111673403A (en) * | 2020-05-29 | 2020-09-18 | 贵州泰和超硬工具股份有限公司 | Hard alloy twist drill rod grinding process |
| CN112846315A (en) * | 2020-12-31 | 2021-05-28 | 苏州用朴精密科技有限公司 | Hard alloy drill bit and machining process thereof |
| CN114192847A (en) * | 2021-12-31 | 2022-03-18 | 江苏博瑞工具有限公司 | Die-casting zinc alloy hexagonal-handle twist drill and manufacturing method thereof |
| CN114888688A (en) * | 2022-05-06 | 2022-08-12 | 东莞市梵宇自动化科技有限公司 | Multi-station drill bit machining center |
-
2009
- 2009-08-28 CN CN200910184514A patent/CN101653905A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837169A (en) * | 2011-06-21 | 2012-12-26 | 祁成 | Production method of milling cutter |
| CN102703911A (en) * | 2012-06-29 | 2012-10-03 | 长沙黑金刚实业有限公司 | Heat treatment method for down-the-hole drill bit of high-wind pressure drilling tool, and drill bit |
| CN102703911B (en) * | 2012-06-29 | 2014-03-05 | 长沙黑金刚实业有限公司 | Heat treatment method for down-the-hole drill bit of high-wind pressure drilling tool, and drill bit |
| CN103223579A (en) * | 2013-04-16 | 2013-07-31 | 常熟市三骏精密刃具制造厂 | Manufacturing method of milling cutter |
| CN103223579B (en) * | 2013-04-16 | 2015-08-26 | 常熟市三骏精密刃具制造厂 | The manufacture method of milling cutter |
| CN104209720A (en) * | 2014-09-19 | 2014-12-17 | 马鞍山邦斯科自动化科技有限公司 | Manufacturing method of heat-resistant rock drill bit |
| CN104481409A (en) * | 2014-09-19 | 2015-04-01 | 马鞍山邦斯科自动化科技有限公司 | Manufacturing method of rock drill |
| CN105134082A (en) * | 2015-07-24 | 2015-12-09 | 盐城市鑫源铜业有限公司 | Heavy-duty annular drill bit and manufacturing method for same |
| CN105134082B (en) * | 2015-07-24 | 2018-10-26 | 盐城市鑫源铜业有限公司 | A kind of manufacturing method of heavy type annular bit |
| CN106670550A (en) * | 2015-11-05 | 2017-05-17 | 扬州市实力五金工具工贸有限公司 | Drilling and chamfering synthesis tool and manufacturing method thereof |
| CN105397438A (en) * | 2015-12-31 | 2016-03-16 | 武汉江钻恒立工程钻具股份有限公司 | Manufacture method of way-type drilling unit |
| CN106181279A (en) * | 2016-08-10 | 2016-12-07 | 台州华达工量具制造有限公司 | A kind of processing technique of cutter head changeable type depth drill |
| CN106181279B (en) * | 2016-08-10 | 2018-02-13 | 台州华达工量具制造有限公司 | A kind of processing technology of cutter head changeable type depth drill |
| CN107363203A (en) * | 2017-07-21 | 2017-11-21 | 江苏军威电子科技有限公司 | A kind of cold-heading molding technique of drill bit |
| CN108070820A (en) * | 2017-12-22 | 2018-05-25 | 江雨仙 | T7 steel blades and its intensifying method |
| CN109773437A (en) * | 2019-03-26 | 2019-05-21 | 丹阳市丹鹰工具制造有限公司 | A kind of processing technology of drill |
| CN110369979A (en) * | 2019-08-19 | 2019-10-25 | 丹阳河工工具有限公司 | A kind of processing technology of anti-breaking type screw tap |
| CN111673403A (en) * | 2020-05-29 | 2020-09-18 | 贵州泰和超硬工具股份有限公司 | Hard alloy twist drill rod grinding process |
| CN112846315A (en) * | 2020-12-31 | 2021-05-28 | 苏州用朴精密科技有限公司 | Hard alloy drill bit and machining process thereof |
| CN114192847A (en) * | 2021-12-31 | 2022-03-18 | 江苏博瑞工具有限公司 | Die-casting zinc alloy hexagonal-handle twist drill and manufacturing method thereof |
| CN114888688A (en) * | 2022-05-06 | 2022-08-12 | 东莞市梵宇自动化科技有限公司 | Multi-station drill bit machining center |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101653905A (en) | Method for manufacturing drilling bit | |
| CN102581145B (en) | Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die | |
| CN103223579B (en) | The manufacture method of milling cutter | |
| CN104625617B (en) | A kind of high-strength bolt production technology | |
| CN104999240A (en) | Gear machining and treating process | |
| CN100445024C (en) | Method for processing high speed steel screw tap | |
| CN106964948A (en) | A kind of processing technology of marine gear | |
| CN102873520B (en) | Process for machining marine gear | |
| CN105108457A (en) | Processing method of overall passive plate | |
| CN100591944C (en) | Production technology of damper piston rod of automobile | |
| CN102837169A (en) | Production method of milling cutter | |
| CN105525230A (en) | Method for manufacturing cutting tools from high-speed W18Cr4Nb material | |
| CN108339913A (en) | A kind of forging method of metallurgy mine tram wheel | |
| CN102049571A (en) | Hob and molding method thereof | |
| CN108747242A (en) | A kind of worm-gear toothing processing technology | |
| CN107263028A (en) | A kind of processing technology of Novel shaft class part machinery | |
| CN110936113A (en) | Manufacturing method of long-life forged aluminum alloy wheel | |
| CN105215641A (en) | The forging processing method of locking bolt | |
| CN103894799A (en) | Shaft workpiece machining technique | |
| CN105057999A (en) | Planet gear shaft machining method | |
| CN101376203A (en) | Technique for preparing cold roller | |
| CN107030453B (en) | The cold-forging technique of clutch sleeve | |
| CN109773437A (en) | A kind of processing technology of drill | |
| CN111185732A (en) | Method for processing spiral bevel gear | |
| CN113478189A (en) | Processing method of reaming bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100224 |