CN102699643A - Processing method for pinion of automobile steering device - Google Patents
Processing method for pinion of automobile steering device Download PDFInfo
- Publication number
- CN102699643A CN102699643A CN2012101797144A CN201210179714A CN102699643A CN 102699643 A CN102699643 A CN 102699643A CN 2012101797144 A CN2012101797144 A CN 2012101797144A CN 201210179714 A CN201210179714 A CN 201210179714A CN 102699643 A CN102699643 A CN 102699643A
- Authority
- CN
- China
- Prior art keywords
- steering device
- automobile steering
- workpiece
- processing method
- pinion
- 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
Images
Landscapes
- Power Steering Mechanism (AREA)
Abstract
A processing method for a pinion of an automobile steering device adopts the following processing steps in sequence: processing a workpiece blank, conducting finish turning on an excircle, lathing the total length, drilling, and carrying out first cleaning, flexible rolling, heat treatment, thread lathing, second cleaning, hard rolling, external grinding, flaw detection and finished product cleaning, wherein the workpiece blank processing step comprises pickling, cold drawing, straightening, material sawing, tempering, shot-blasting, first phosphorus saponification, first cold extrusion for the formation of an elongated slot in a large end and a flat small end, second cold extrusion for a female spline hole in the large end, tempering, second phosphorus saponification, third cold extrusion integral formation, tempering, shot-blasting, large end lathing, beveling, small end central hole drilling, large end 60-degree hole grinding, and rust prevention. When the method provided by the invention is adopted for processing the pinion of the automobile steering device, materials are saved, the precision is high, and the service life is long.
Description
Technical field
The present invention relates to a kind of mechanical part, relate in particular to a kind of processing method of automobile steering device pinion.
Background technology
In the member of automobile steering device, a kind of pinion is arranged, be the safety member in the steering gear, when the direction of rotation dish, pinion just and then rotates, and the tooth bar that drives thus in the steering gear rotates towards the direction that steering wheel rotates.Therefore, it is high that the precision of pinion is wanted, and it is high that intensity is wanted, and it is high that machining accuracy is wanted.
In the prior art, to the processing of this pinion, be the technology that adopts round bar turning moulding, this processing technology causes waste of raw materials, technological process length, logistics loaded down with trivial details, long processing time on every side.
Summary of the invention
The object of the invention exactly in order to address the above problem, provides a kind of processing method of automobile steering device pinion.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of processing method of automobile steering device pinion is to be raw material with 16MnCr5 tool steel bar, step processing in sequence below the employing:
Make workpiece blank; One section 16MnCr5 tool steel of intercepting bar; Through pickling, cold-drawn, alignment, saw material, tempering, ball blast, phospholeumization, cold extrusion for the first time for the first time form big end elongated slot, flat small end, cold extrusion for the second time form big end internal splined hole, tempering, for the second time phospholeumization, for the third time cold extrusion global formation, tempering, ball blast, Che Daduan, chamfering, brill small end centre bore, grind 60 ° of holes and antirust of big end, handle and be processed into the specification workpiece blank suitable with the automobile steering device pinion; This workpiece blank has gear segment, big end, small end, end has elongated slot and internal splined hole, small end that centre bore is arranged greatly.
The finish turning cylindrical; By the cylindrical of each section of specification finish turning workpiece, the diameter that diameter of the diameter of gear segment is reached
big end reaches
small end reaches
The Che length overall is machined to 100mm by specification with the length of workpiece;
Boring radially gets out the pin-and-hole of a diameter for
at the big end of blank;
Clean for the first time, workpiece is cleaned up with cleaning fluid;
Soft rolling becomes involute helical gear with chain digital control gear hobbing machine with gear segment roughing, and the number of teeth is 7, and effective facewidth is 32.29mm;
Heat treatment is carried out gas carburizing heat treatment to workpiece;
Cutting thread, car goes out the external thread section that a segment length and diameter are 10mm in the outer end of small end;
Clean for the second time, workpiece is cleaned up with cleaning fluid;
Roll firmly,, remove flute profile end face burr with chain digital control gear hobbing machine fine finishining involute helical gear;
Outer mill is with each section of numerical control cylindrical grinder grinding work piece cylindrical;
Flaw detection is carried out flaw detection with magnaflux to workpiece, confirms to have flawless;
Finished product cleans, and will confirm that flawless workpiece cleans up with cleaning fluid, and dry antirust, must finished product.
Make the processing processing described in the workpiece blank step comprise pickling, cold-drawn, alignment, saw material, tempering, ball blast, phospholeumization, cold extrusion for the first time for the first time form big end elongated slot, flat small end, cold extrusion for the second time form big end internal splined hole, tempering, for the second time phospholeumization, for the third time cold extrusion global formation, tempering, ball blast, Che Daduan, chamfering, brill small end centre bore, grind 60 ° of holes and antirust of big end, handle and be processed into the specification workpiece blank suitable with the automobile steering device pinion; This workpiece blank has gear segment, big end, small end, end has elongated slot and internal splined hole, small end that centre bore is arranged greatly.
Described finish turning cylindrical adopts numerically controlled lathe DMC CT * 310,2300 rev/mins of rotating speeds, and amount of feeding 0.2mm/ changes.
Described car length overall adopts numerically controlled lathe CKJ360,1200 rev/mins of rotating speeds, and amount of feeding 0.15mm/ changes.
The described cleaning first time, cleaning for the first time and finished product clean and all use MT29 cleaning fluid, 55 ℃ of cleaning temperatures; Clean for the first time, clean for the first time and adopt HKD-1000ST spray Cleaning for High Capacity machine, finished product to clean the HKD-3000ST spray Cleaning for High Capacity machine that adopts.
Described soft rolling adopted Gleason 130H chain digital control gear hobbing machine, and the hobboing cutter rotating speed is 1300 rev/mins; Roll firmly and adopt Gleason 130H chain digital control gear hobbing machine, the hobboing cutter rotating speed is 1200 rev/mins.
Described heat treatment adopts the carburizing and quenching multipurpose furnace to carry out, and carburizing temperature is 920 ℃, and hardening heat is 840 ℃, and temperature is 180 ℃.
Numerically controlled lathe DMC CT * 310 are adopted in described cutting thread, use the 1.5mm screwer, 1100 rev/mins of rotating speeds, and amount of feeding 1.5mm/ changes.
Described outer mill adopts G25P-50CNC numerical control cylindrical grinder, and grinding wheel speed is 1600 rev/mins, uses two emery wheels grinding two ends cylindrical and inclined-plane simultaneously.
Described flaw detection is the workpiece two ends to be contacted with electrode magnetize, and applies the wetting iron powder of one deck at surface of the work again, with under the display surface flawless is arranged.
Adopt method processing automobile steering gear pinion of the present invention, have the advantage of materials province, precision height, long service life.
Description of drawings
Fig. 1 is the structural representation of automobile steering device pinion involved in the present invention;
Fig. 2 is that the A-A of Fig. 1 is to the sectional structure sketch map.
The specific embodiment
Referring to Fig. 1, cooperate referring to Fig. 2, the processing method of automobile steering device pinion of the present invention is to be raw material with 16MnCr5 tool steel bar, step processing in sequence below the employing:
Make workpiece blank; One section 16MnCr5 tool steel of intercepting bar; Through pickling, cold-drawn, alignment, saw material, tempering, ball blast, phospholeumization, cold extrusion for the first time for the first time form big end elongated slot, flat small end, cold extrusion for the second time form big end internal splined hole, tempering, for the second time phospholeumization, for the third time cold extrusion global formation, tempering, ball blast, Che Daduan, chamfering, brill small end centre bore, grind 60 ° of holes and antirust of big end, handle and be processed into the specification workpiece blank suitable with the automobile steering device pinion; This workpiece blank has gear segment 1, holds 2 greatly, small end 3, big end have elongated slot 4 and internal splined hole 5, small end that centre bore (not shown come out, this hole is used for the work in-process location) is arranged.
The finish turning cylindrical adopts numerically controlled lathe DMC CT * 310,2300 rev/mins of rotating speeds, and amount of feeding 0.2mm/ changes; By the cylindrical of each section of specification finish turning workpiece, the diameter of gear segment 1 is reached, and
diameter of holding 2 diameter to reach
small end 3 greatly reaches
The Che length overall adopts numerically controlled lathe CKJ360,1200 rev/mins of rotating speeds, and amount of feeding 0.15mm/ changes.By specification the length of workpiece is machined to 100mm.
Boring; Big end at blank radially gets out the pin-and-hole 6 of a diameter for
; In boring procedure, use pilot drill centering earlier, re-use Twist Drill; The rose reamer chamfering is used in the fraising of use reamer at last.
Clean for the first time, use the MT29 cleaning fluid, cleaning temperature is controlled at 55 ℃; Adopt HKD-1000ST spray Cleaning for High Capacity machine, workpiece is cleaned up with cleaning fluid.
Soft rolling adopted Gleason 130H chain digital control gear hobbing machine, and the hobboing cutter rotating speed is 1300 rev/mins; With chain digital control gear hobbing machine gear segment roughing is become involute helical gear, the number of teeth is 7, and effective facewidth is 32.29mm.
The carburizing and quenching multipurpose furnace is adopted in heat treatment, and carburizing temperature is controlled at 920 ℃, and hardening heat is controlled at 840 ℃, and temperature is controlled at 180 ℃, and workpiece is carried out gas carburizing heat treatment.
Numerically controlled lathe DMC CT * 310 are adopted in cutting thread, use the 1.5mm screwer, 1100 rev/mins of rotating speeds, and amount of feeding 1.5mm/ changes, and car goes out the external thread section 31 that a segment length and diameter are 10mm in the outer end of small end.
Clean for the second time, use the MT29 cleaning fluid, cleaning temperature is controlled at 55 ℃, adopts HKD-1000ST spray Cleaning for High Capacity machine that workpiece cleaning is clean.
Roll firmly, adopt Gleason 130H chain digital control gear hobbing machine, the hobboing cutter rotating speed is controlled at 1200 rev/mins, and the fine finishining involute helical gear is removed flute profile end face burr.
Outer mill adopts G25P-50CNC numerical control cylindrical grinder, and grinding wheel speed is controlled at 1600 rev/mins, uses two emery wheels grinding two ends cylindrical and inclined-plane simultaneously.
Flaw detection is carried out flaw detection with magnaflux to workpiece, confirms to have flawless.The concrete practice is the workpiece two ends to be contacted with electrode magnetize, and applies the wetting iron powder of one deck at surface of the work again, with under the display surface flawless is arranged.
Finished product cleans, and will confirm that flawless workpiece adopts HKD-3000ST spray Cleaning for High Capacity machine, uses the MT29 cleaning fluid to clean up, and cleaning temperature is controlled at 55 ℃.And dry antirust, finished product.
Claims (10)
1. the processing method of an automobile steering device pinion; Said automobile steering device pinion comprises gear segment; The diameter that is connected gear segment one end is greater than the big end of gear segment and be connected the small end of the diameter of the gear segment other end less than gear segment; It is characterized in that, be raw material with 16MnCr5 tool steel bar, step processing in sequence below the employing:
Make workpiece blank, one section 16MnCr5 tool steel of intercepting bar is handled and is processed into the specification workpiece blank suitable with the automobile steering device pinion;
The finish turning cylindrical; By the cylindrical of each section of specification finish turning workpiece, the diameter that diameter of the diameter of gear segment is reached
big end reaches
small end reaches
The Che length overall is machined to 100mm by specification with the length of workpiece;
Boring radially gets out the pin-and-hole of a diameter for
at the big end of blank;
Clean for the first time, workpiece is cleaned up with cleaning fluid;
Soft rolling becomes involute helical gear with chain digital control gear hobbing machine with gear segment roughing, and the number of teeth is 7, and effective facewidth is 32.29mm;
Heat treatment is carried out gas carburizing heat treatment to workpiece;
Cutting thread, car goes out the external thread section that a segment length and diameter are 10mm in the outer end of small end;
Clean for the second time, workpiece is cleaned up with cleaning fluid;
Roll firmly,, remove flute profile end face burr with chain digital control gear hobbing machine fine finishining involute helical gear;
Outer mill is with each section of numerical control cylindrical grinder grinding work piece cylindrical;
Flaw detection is carried out flaw detection with magnaflux to workpiece, confirms to have flawless;
Finished product cleans, and will confirm that flawless workpiece cleans up with cleaning fluid, and dry antirust, must finished product.
2. according to the processing method of claims 1 described automobile steering device pinion; It is characterized in that: make the processing processing described in the workpiece blank step comprise pickling, cold-drawn, alignment, saw material, tempering, ball blast, phospholeumization, cold extrusion for the first time for the first time form big end elongated slot, flat small end, cold extrusion for the second time form big end internal splined hole, tempering, for the second time phospholeumization, for the third time cold extrusion global formation, tempering, ball blast, Che Daduan, chamfering, brill small end centre bore, grind 60 ° of holes and antirust of big end, handle and be processed into the specification workpiece blank suitable with the automobile steering device pinion; This workpiece blank has gear segment, big end, small end, end has elongated slot and internal splined hole, small end that centre bore is arranged greatly.
3. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: described finish turning cylindrical adopts numerically controlled lathe DMC CT * 310,2300 rev/mins of rotating speeds, and amount of feeding 0.2mm/ changes.
4. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: described car length overall adopts numerically controlled lathe CKJ360,1200 rev/mins of rotating speeds, and amount of feeding 0.15mm/ changes.
5. according to the processing method of claims 2 described automobile steering device pinions, it is characterized in that: the described cleaning first time, cleaning for the first time and finished product clean and all use MT29 cleaning fluid, 55 ℃ of cleaning temperatures; Clean for the first time, clean for the first time and adopt HKD-1000ST spray Cleaning for High Capacity machine, finished product to clean the HKD-3000ST spray Cleaning for High Capacity machine that adopts.
6. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: described soft rolling adopted Gleason 130H chain digital control gear hobbing machine, and the hobboing cutter rotating speed is 1300 rev/mins; Roll firmly and adopt the Gleason130H chain digital control gear hobbing machine, the hobboing cutter rotating speed is 1200 rev/mins.
7. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: described heat treatment adopts the carburizing and quenching multipurpose furnace to carry out, and carburizing temperature is 920 ℃, and hardening heat is 840 ℃, and temperature is 180 ℃.
8. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: numerically controlled lathe DMC CT * 310 are adopted in described cutting thread, use the 1.5mm screwer, 1100 rev/mins of rotating speeds, and amount of feeding 1.5mm/ changes.
9. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: described outer mill adopts G25P-50CNC numerical control cylindrical grinder, and grinding wheel speed is 1600 rev/mins, uses two emery wheels grinding two ends cylindrical and inclined-plane simultaneously.
10. according to the processing method of claims 1 described automobile steering device pinion, it is characterized in that: described flaw detection is the workpiece two ends to be contacted with electrode magnetize, and applies the wetting iron powder of one deck at surface of the work again, with under the display surface flawless is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101797144A CN102699643A (en) | 2012-06-01 | 2012-06-01 | Processing method for pinion of automobile steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101797144A CN102699643A (en) | 2012-06-01 | 2012-06-01 | Processing method for pinion of automobile steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102699643A true CN102699643A (en) | 2012-10-03 |
Family
ID=46892852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101797144A Pending CN102699643A (en) | 2012-06-01 | 2012-06-01 | Processing method for pinion of automobile steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102699643A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286533A (en) * | 2013-05-28 | 2013-09-11 | 重庆市首业机械制造有限公司 | Processing technology for rear axle drive bevel gear |
| CN103464990A (en) * | 2013-09-18 | 2013-12-25 | 靖江市恒通汽车配件制造有限公司 | Machining method for gear shaft in angle steering gear assembly |
| CN103737270A (en) * | 2013-12-04 | 2014-04-23 | 鞠小平 | Method for machining input shaft of main reducing gear of heavy load automobile |
| CN104128769A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Gear production technology facilitating uniform composition distribution |
| CN104128765A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Production process facilitating optimization of gear surface quality and segregation degree |
| CN104128767A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Gear production process beneficial to improving production efficiency and product quality |
| CN104128771A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Gear production technology facilitating reduction of degree of segregation |
| CN104191187A (en) * | 2014-09-24 | 2014-12-10 | 浙江佑安高科消防系统有限公司 | Energy-saving and high-efficiency processing method for gear shaft of door closer |
| CN104227361A (en) * | 2014-07-24 | 2014-12-24 | 成都亨通兆业精密机械有限公司 | Gear production technology benefiting production efficiency and surface quality |
| CN104439953A (en) * | 2014-11-11 | 2015-03-25 | 重庆建设工业(集团)有限责任公司 | Machining method of upper portion of input shaft of steering gear |
| CN108247304A (en) * | 2018-01-12 | 2018-07-06 | 中国航发哈尔滨东安发动机有限公司 | The method for promoting teeth directional precision after internal spline is heat-treated |
| CN108817873A (en) * | 2018-08-20 | 2018-11-16 | 重庆市璧山区隆翔机械有限公司 | Differential casing hemisphere face processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010001165A1 (en) * | 1997-12-26 | 2001-05-17 | Heiichi Hasegawa | Method of manufacturing a speed gear and an apparatus for manufacturing a speed gear |
| CN101637878A (en) * | 2008-07-30 | 2010-02-03 | Kapp有限公司 | Method for the production of a workpiece and grinding machine |
| CN101954574A (en) * | 2010-09-26 | 2011-01-26 | 中国兵器工业第五九研究所 | Method for machining output shaft assembly |
| CN101992382A (en) * | 2009-08-21 | 2011-03-30 | 上海格尔汽车附件有限公司 | Method for carrying out cold extrusion molding on pinion in automobile steering device |
-
2012
- 2012-06-01 CN CN2012101797144A patent/CN102699643A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010001165A1 (en) * | 1997-12-26 | 2001-05-17 | Heiichi Hasegawa | Method of manufacturing a speed gear and an apparatus for manufacturing a speed gear |
| CN101637878A (en) * | 2008-07-30 | 2010-02-03 | Kapp有限公司 | Method for the production of a workpiece and grinding machine |
| CN101992382A (en) * | 2009-08-21 | 2011-03-30 | 上海格尔汽车附件有限公司 | Method for carrying out cold extrusion molding on pinion in automobile steering device |
| CN101954574A (en) * | 2010-09-26 | 2011-01-26 | 中国兵器工业第五九研究所 | Method for machining output shaft assembly |
Non-Patent Citations (2)
| Title |
|---|
| 《机电技术》 20081230 林陈彪 工程机械齿轮轴加工工艺分析与优化 42-44 2,5 , 第04期 * |
| 林陈彪: "工程机械齿轮轴加工工艺分析与优化", 《机电技术》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286533B (en) * | 2013-05-28 | 2015-10-28 | 重庆市首业机械制造有限公司 | Driving bevel gear axis for rear axle processing technology |
| CN103286533A (en) * | 2013-05-28 | 2013-09-11 | 重庆市首业机械制造有限公司 | Processing technology for rear axle drive bevel gear |
| CN103464990A (en) * | 2013-09-18 | 2013-12-25 | 靖江市恒通汽车配件制造有限公司 | Machining method for gear shaft in angle steering gear assembly |
| CN103464990B (en) * | 2013-09-18 | 2017-01-04 | 靖江市恒通汽车配件制造有限公司 | The processing method of the gear shaft in the steering assembly of angle |
| CN103737270A (en) * | 2013-12-04 | 2014-04-23 | 鞠小平 | Method for machining input shaft of main reducing gear of heavy load automobile |
| CN103737270B (en) * | 2013-12-04 | 2016-06-29 | 鞠小平 | A kind of processing method of heavy bearing automobile main reducing gear power shaft |
| CN104128765A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Production process facilitating optimization of gear surface quality and segregation degree |
| CN104227361A (en) * | 2014-07-24 | 2014-12-24 | 成都亨通兆业精密机械有限公司 | Gear production technology benefiting production efficiency and surface quality |
| CN104128771A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Gear production technology facilitating reduction of degree of segregation |
| CN104128767A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Gear production process beneficial to improving production efficiency and product quality |
| CN104128769A (en) * | 2014-07-24 | 2014-11-05 | 成都亨通兆业精密机械有限公司 | Gear production technology facilitating uniform composition distribution |
| CN104191187A (en) * | 2014-09-24 | 2014-12-10 | 浙江佑安高科消防系统有限公司 | Energy-saving and high-efficiency processing method for gear shaft of door closer |
| CN104439953A (en) * | 2014-11-11 | 2015-03-25 | 重庆建设工业(集团)有限责任公司 | Machining method of upper portion of input shaft of steering gear |
| CN104439953B (en) * | 2014-11-11 | 2017-02-01 | 重庆建设工业(集团)有限责任公司 | Machining method of upper portion of input shaft of steering gear |
| CN108247304A (en) * | 2018-01-12 | 2018-07-06 | 中国航发哈尔滨东安发动机有限公司 | The method for promoting teeth directional precision after internal spline is heat-treated |
| CN108817873A (en) * | 2018-08-20 | 2018-11-16 | 重庆市璧山区隆翔机械有限公司 | Differential casing hemisphere face processing technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102699643A (en) | Processing method for pinion of automobile steering device | |
| US20200230725A1 (en) | Method and Device for Precision Machining of Toothed and Hardened Work Wheels | |
| CN104227345B (en) | Processing method for high-precision thin step shaft and grinding chuck for processing method | |
| CN102039519B (en) | Manufacturing process of high-precision extrusion die for DeNOx catalyst | |
| TWI414377B (en) | Barrel - shaped tool for internal gear machining | |
| CN103481040B (en) | Crank processing technology | |
| JP6549164B2 (en) | Gear manufacturing method and gear | |
| US10646938B2 (en) | Precision electrochemical machine for gear manufacture | |
| JP6509163B2 (en) | Method for finishing bevel gears in the tip region, machine for bevel gears processing, and grinding tools designed accordingly | |
| CN104723038A (en) | Method for machining circular hole alloy steel cage with inner-and-outer double fore shafts | |
| CN104400335A (en) | Taper sleeve processing method | |
| TW201036739A (en) | Processing method for internal gear | |
| CN103878544A (en) | High-precision spindle machining process | |
| Nadolny | A review on single-pass grinding processes | |
| CN105563058A (en) | Gear box hollow shaft machining method | |
| CN107322239A (en) | A kind of processing method of one-way clutch outer ring | |
| CN1911592A (en) | Processing method of full grinding tool | |
| CN102672436A (en) | Manufacturing process of automobile half shaft | |
| CN109475955B (en) | Method and device for hard tooth surface finishing of gears with internal teeth by means of a gear honing machine | |
| CN103447782A (en) | Machining method of lathe spindle | |
| JP2013018117A (en) | Screw-shaped grinding stone for gear grinding and gear grinding method | |
| CN201073741Y (en) | Numerical control quartz inner-outer circular grinding machine | |
| CN200984691Y (en) | Taper gear internal hole trimming device | |
| JP2005131760A (en) | Ball screw groove machining tool and ball screw groove machining method | |
| CN101780640A (en) | Method for processing machine elements and device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |