CN103692177B - A kind of extension drill processing method - Google Patents
A kind of extension drill processing method Download PDFInfo
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- CN103692177B CN103692177B CN201310236522.7A CN201310236522A CN103692177B CN 103692177 B CN103692177 B CN 103692177B CN 201310236522 A CN201310236522 A CN 201310236522A CN 103692177 B CN103692177 B CN 103692177B
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- drill
- knife bar
- extension
- shank
- standard parallel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
A kind of extension drill processing method, belongs to field of machining; Drill bit axiality cannot be met in order to solve existing process program, and then a kind of extension drill processing method is provided; Adopt weldering cover parallel shank twist drill and knife bar to be welded as a whole, then car falls to weld accessory weldering cover; Grinding extension drill blade cylindrical and taper shank; In cutter sharpener grinding 118 ° of taper lead angles and relief angle thereof; The present invention welds pattern owing to adopting standard parallel shank twist drill with knife bar, decreases stress and the distortion of cut drill groove; Preferably cutting parameter, under the prerequisite ensureing machining accuracy, improves working (machining) efficiency to greatest extent; Optimize welding procedure design and welding parameter, make this extension drill have enough drill bit intensity and qualified axiality, meet instructions for use.
Description
Technical field
The present invention relates to a kind of extension drill processing method, belong to field of machining.
Background technology
Extension drill is the dedicated tool (as the axially extending bore of processing casing roller expansion shell, the axially extending bore of processing branch sleeve) of deep hole processing, bit diameter is less than or equal to the extension drill of Φ 12mm, welding pattern is adopted during processing and manufacturing, head adopts the transformation of the way of standard parallel shank twist drill, and it is bending that existing processing method easily makes extension drill produce.
Summary of the invention
The object of the invention is the process requirements that cannot meet extension drill in order to solve existing process program, for ensureing the processing and manufacturing precision of extension drill, and then providing a kind of extension drill processing method.
The particular content of extension drill processing method is:
Step one: this extension drill by standard parallel shank twist drill and knife bar welded, grinding standard parallel shank twist drill 60 ° of counter centers, for postorder provides accurate positioning datum;
Step 2: turning weldering cover; Weldering cover for by standard parallel shank twist drill and knife bar welded time accessory; The staight shank cylindrical 0.2mm matched in clearance of weldering cover endoporus and standard parallel shank twist drill;
Step 3: turning knife bar; Left end knife bar cylindrical overlaps endoporus 0.2mm matched in clearance with weldering; Knife bar taper shank cylindrical stays grinding allowance 0.6-0.7mm, knife bar right-hand member drill centers; 85 ° ~ 90 ° lathe tools are adopted to carry out machining during turning; Cutting parameter is: rotating speed 900r/min, amount of feeding 0.15mm/r, cutting depth 0.5mm;
Step 4: at horizontal milling machine Milling Process weldering cover waist hole and knife bar tang;
Step 5: heat-treat knife bar, hardens knife bar to HRC35-45, and within alignment 0.2mm;
Step 6: 20 ° of inclined-planes of cutting on line lathe cutting processing standard parallel shank twist drill shank 20 ° of inclined-planes and knife bar left end;
Step 7: repair standard parallel shank twist drill 20 ° of inclined-planes and knife bar 20 ° of inclined-planes, ensure to fit tightly;
Step 8: by standard parallel shank twist drill and knife bar welded on coreless induction furnace equipment; During welding, solder flux is put into 20 ° of solder bond faces place, welding temperature 720 ~ 750 DEG C, after solder melts be full of solder bond face completely, put back to stove tempering destressing, temperature 400 DEG C, be incubated 2 hours, then air cooling is to normal temperature;
Step 9: car falls to weld accessory weldering cover;
Step 10: grinding extension drill blade cylindrical and taper shank, within ensureing coaxial precision 0.02mm;
Step 11: in cutter sharpener grinding 118 ° of taper lead angles and relief angle thereof;
Step 12: needle drawing number, packs cutter; Extension drill completion of processing.
Described solder flux is the mixture of 105 copper sheets and sodium tetraborate.
Extension drill is slender axles parts, and when processing and manufacturing, axiality is difficult to most ensure, for ensureing the machining accuracy of this extension drill, optimizes process program, adopts welding pattern.Owing to adopting standard straight shank drill to weld pattern with knife bar, decrease stress and the distortion of cut drill groove; Preferably optimum cutting parameter, under the prerequisite ensureing machining accuracy, improves working (machining) efficiency to greatest extent; Optimize welding procedure design and welding parameter, make this extension drill have enough tool strength and qualified axiality, meet instructions for use.
Accompanying drawing explanation
Fig. 1 extension drill outline drawing;
Fig. 2 extension drill Welding Structure figure;
Fig. 3 welds cover outline drawing.
Detailed description of the invention
The specific embodiment of the present invention is: step one: grinding standard parallel shank twist drill 60 ° of counter centers; This extension drill by standard parallel shank twist drill and knife bar welded, be ensure the machining accuracy of postorder, need grinding 60 ° of counter centers, think that postorder provides accurate positioning datum;
Step 2: turning weldering cover; Weldering cover for by standard parallel shank twist drill and knife bar welded time accessory, in order to prevent from running off during solder flux heating and melting; The staight shank cylindrical 0.2mm matched in clearance of weldering cover endoporus and parallel shank twist drill, in order to ensure welding precision requirement;
Step 3: turning knife bar; Left end knife bar cylindrical overlaps endoporus 0.2mm matched in clearance, in order to ensure welding precision requirement with weldering; Knife bar taper shank cylindrical stays grinding allowance 0.6-0.7mm, knife bar right-hand member drill centers; For reducing radial cutting drag, reducing axial bending distortion, 85 ° ~ 90 ° lathe tools during turning, are adopted to carry out machining; Cutting parameter is: rotating speed 900r/min, amount of feeding 0.15mm/r, cutting depth 0.5mm;
Step 4: at horizontal milling machine Milling Process weldering cover waist hole and knife bar tang;
Step 5: heat-treat knife bar, hardens knife bar to HRC35-45, and within alignment 0.2mm;
Step 6: 20 ° of inclined-planes of cutting on line lathe cutting processing standard parallel shank twist drill shank and knife bar left end;
Step 7: repair standard parallel shank twist drill and knife bar 20 ° of inclined-planes, ensure to fit tightly;
Step 8: by standard parallel shank twist drill and knife bar welded on coreless induction furnace equipment; During welding, solder flux (mixture of 105 copper sheets and sodium tetraborate) is put into 20 ° of solder bond faces place, welding temperature 720 ~ 750 DEG C, after solder melts be full of solder bond face completely, put back to stove tempering destressing, temperature 400 DEG C, be incubated 2 hours, then air cooling is to normal temperature, completes welding sequence;
Step 9: car falls to weld accessory weldering cover;
Step 10: grinding extension drill blade cylindrical and taper shank, within ensureing coaxial precision 0.02mm.
Step 11: in cutter sharpener grinding 118 ° of taper lead angles and relief angle thereof;
Step 12: needle drawing number, packs cutter; Extension drill completion of processing.
Claims (2)
1. an extension drill processing method, is characterized in that the step of described processing method is:
Step one: this extension drill by standard parallel shank twist drill and knife bar welded, grinding standard parallel shank twist drill 60 ° of counter centers, for postorder provides accurate positioning datum;
Step 2: turning weldering cover; Weldering cover for by standard parallel shank twist drill and knife bar welded time accessory; The staight shank cylindrical 0.2mm matched in clearance of weldering cover endoporus and standard parallel shank twist drill;
Step 3: turning knife bar; Left end knife bar cylindrical overlaps endoporus 0.2mm matched in clearance with weldering; Knife bar taper shank cylindrical stays grinding allowance 0.6-0.7mm, knife bar right-hand member drill centers; 85 ° ~ 90 ° lathe tools are adopted to carry out machining during turning; Cutting parameter is: rotating speed 900r/min, amount of feeding 0.15mm/r, cutting depth 0.5mm;
Step 4: at horizontal milling machine Milling Process weldering cover waist hole and knife bar tang;
Step 5: heat-treat knife bar, hardens knife bar to HRC35-45, and within alignment 0.2mm;
Step 6: 20 ° of inclined-planes of cutting on line lathe cutting processing standard parallel shank twist drill shank 20 ° of inclined-planes and knife bar left end;
Step 7: repair standard parallel shank twist drill 20 ° of inclined-planes and knife bar 20 ° of inclined-planes, ensure to fit tightly;
Step 8: by standard parallel shank twist drill and knife bar welded on coreless induction furnace equipment; During welding, solder flux is put into 20 ° of solder bond faces place, welding temperature 720 ~ 750 DEG C, after solder melts be full of solder bond face completely, put back to stove tempering destressing, temperature 400 DEG C, be incubated 2 hours, then air cooling is to normal temperature;
Step 9: car falls to weld accessory weldering cover;
Step 10: grinding extension drill blade cylindrical and taper shank, within ensureing coaxial precision 0.02mm;
Step 11: in cutter sharpener grinding 118 ° of taper lead angles and relief angle thereof;
Step 12: extension drill completion of processing.
2. a kind of extension drill processing method according to claim 1, is characterized in that: described solder flux is the mixture of 105 copper sheets and sodium tetraborate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310236522.7A CN103692177B (en) | 2013-06-14 | 2013-06-14 | A kind of extension drill processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310236522.7A CN103692177B (en) | 2013-06-14 | 2013-06-14 | A kind of extension drill processing method |
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| Publication Number | Publication Date |
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| CN103692177A CN103692177A (en) | 2014-04-02 |
| CN103692177B true CN103692177B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310236522.7A Active CN103692177B (en) | 2013-06-14 | 2013-06-14 | A kind of extension drill processing method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625669A (en) * | 2015-01-07 | 2015-05-20 | 哈尔滨飞机工业集团有限责任公司 | Lengthening method of auger bit drill rod |
| CN104625670A (en) * | 2015-01-16 | 2015-05-20 | 哈尔滨飞机工业集团有限责任公司 | Method for manufacturing lengthened drill bit |
| CN105058002B (en) * | 2015-08-05 | 2017-06-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of welded type extension drill |
| 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 |
| CN107378120A (en) * | 2017-08-08 | 2017-11-24 | 哈尔滨汽轮机厂有限责任公司 | A kind of welded type spreading reamer and its processing method for deep hole processing |
| CN111014785A (en) * | 2019-12-28 | 2020-04-17 | 中山市光和精密科技有限公司 | Double-edge chamfering extrusion drilling reamer |
| CN112428028B (en) * | 2020-11-20 | 2022-06-07 | 长江大学 | Auxiliary blade processing method for plastic product drilling processing drill bit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201833031U (en) * | 2010-05-31 | 2011-05-18 | 哈尔滨汽轮机厂有限责任公司 | Assembled extension expanding drill |
| CN201871771U (en) * | 2010-11-12 | 2011-06-22 | 邵阳恒远资江水电设备有限公司 | Lengthened drill bit for deep-hole drill |
| CN202180240U (en) * | 2011-06-28 | 2012-04-04 | 上海宝冶集团有限公司 | Lengthened alloy tool steel bit |
| CN202343998U (en) * | 2011-10-28 | 2012-07-25 | 天津隆之珠模具科技有限公司 | Super-long straight handle drill bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002066822A (en) * | 2000-08-31 | 2002-03-05 | Hitachi Tool Engineering Ltd | Twist drill |
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2013
- 2013-06-14 CN CN201310236522.7A patent/CN103692177B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201833031U (en) * | 2010-05-31 | 2011-05-18 | 哈尔滨汽轮机厂有限责任公司 | Assembled extension expanding drill |
| CN201871771U (en) * | 2010-11-12 | 2011-06-22 | 邵阳恒远资江水电设备有限公司 | Lengthened drill bit for deep-hole drill |
| CN202180240U (en) * | 2011-06-28 | 2012-04-04 | 上海宝冶集团有限公司 | Lengthened alloy tool steel bit |
| CN202343998U (en) * | 2011-10-28 | 2012-07-25 | 天津隆之珠模具科技有限公司 | Super-long straight handle drill bit |
Non-Patent Citations (1)
| Title |
|---|
| 钻头加工连接方式;杨根仁;《机械工人冷加工》;19910730;53 * |
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| CN103692177A (en) | 2014-04-02 |
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