CN103567728B - A kind of part internal tooth accurate forming method - Google Patents
A kind of part internal tooth accurate forming method Download PDFInfo
- Publication number
- CN103567728B CN103567728B CN201310491155.5A CN201310491155A CN103567728B CN 103567728 B CN103567728 B CN 103567728B CN 201310491155 A CN201310491155 A CN 201310491155A CN 103567728 B CN103567728 B CN 103567728B
- Authority
- CN
- China
- Prior art keywords
- blank
- internal tooth
- internal gear
- tooth
- shaped
- 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.)
- Active
Links
Classifications
-
- 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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A kind of part internal tooth accurate forming method, processing step is as follows: step 1, blanking base, prepare hollow annular or cup-shaped preformed blank; Step 2, preformed blank is carried out to soft annealing and surface lubrication processing; Step 3, the forming punch that is shaped with Accurate Tooth is inserted in to preformed blank, and carries out secondary diameter-reducing formation, obtain one and differ the internal gear blank of 0.5 grade-1 grade with forming punch profile accuracy; Step 4, to complete internal tooth be shaped internal gear blank carry out machined or cut apart rear machined. The present invention is a kind of internal tooth manufacturing process of high efficiency internal tooth class machine components, and internal tooth forming accuracy is high, inherent quality good, stock utilization is high, in the time of batch production, can significantly reduce production costs. The present invention has not only saved great deal of steel, also makes following process amount reduce, and has improved the efficiency of machining, and the workload of machine tool plant's machining also obviously declines, and reaches object energy-conservation, low-carbon (LC).
Description
Technical field
The present invention relates to mechanical transmissioning technology field, particularly a kind of internal tooth accurate forming method of internal tooth class part.
Background technology
The internal tooth manufacturing process of common internal tooth class machine components has:
1. machining is shaped, and specifically has: draw tooth to be shaped, gear shaping shaping etc.;
2. Plastic Forming, as internal gear backward extrusion cold extrusion forming.
It is traditional internal gear manufacturing process that machining is shaped. Production efficiency is low, and waste of material is large, and production cost is high. AndFlank profil metal streamline is cut off, and fatigue strength is low.
Internal gear backward extrusion cold extrusion forming is a kind of high efficiency accurate forming method. Shortcoming is that the teeth directional precision of internal gear is squeezedShi Chongtou movement warp affects, and is difficult to meet the requirement of conventional mechanical transmission accuracy.
Summary of the invention
The object of the invention is: a kind of internal tooth accurate forming method of internal tooth class part is provided, solves material in existing processing methodThe shortcoming that utilization rate is low, the process-cycle is long and precision is low.
Technical scheme of the present invention is: a kind of part internal tooth accurate forming method, and processing step is as follows:
Step 1, blanking base, prepare hollow annular or cup-shaped preformed blank;
Step 2, preformed blank is carried out to soft annealing and surface lubrication processing;
Step 3, the forming punch that is shaped with Accurate Tooth is inserted in to preformed blank, and carries out secondary diameter-reducing formation, obtain one withForming punch profile accuracy differs the internal gear blank of 0.5 grade-1 grade;
Step 4, to complete internal tooth be shaped internal gear blank carry out machined or cut apart rear machined.
Further, the concrete steps of described diameter-reducing formation are: with a undergauge die by preformed blank reduced diameter, preformationThe material of shape blanking inner hole enters under the effect of modular angle α at the undergauge die of 2.5 °-15 °, mobile to end face time, is pressed towardsIn the profile of tooth groove of forming punch; In the time that the necking deformation amount of undergauge die reaches 8%-15%, just can obtain with drift and be shaped partlyThe internal gear blank that shape and precision are suitable.
Further, described step 3 is that the forming punch that is shaped with Accurate Tooth is inserted in to preformed blank, carries out tube reducing for the first timeBe shaped, obtain one and differ the internal gear blank of 1 grade-1.5 grades with forming punch profile accuracy; By internal gear blank softening annealing,And carry out carrying out again diameter-reducing formation for the second time after surface lubrication processing, obtain one and differ 0.5 grade-1 grade with forming punch profile accuracyInternal gear blank.
Further, in described step 3 preformed blank internal diameter than the outer path length of the forming punch of the large 0.5%-1.5% of forming punch external diameterDegree.
Further, described step 4 is carried out machined or cuts apart before rear machined the internal gear blank that completes internal tooth shaping, rightComplete internal tooth be shaped internal gear again carry out soft annealing and internal gear extend be shaped process.
Further, described step 2 to preformed blank carry out soft annealing and surface lubrication processing comprise vacuum annealing processing,Ball blast surface treatment and phospholeum processing.
The invention has the beneficial effects as follows:
1, a kind of part internal tooth accurate forming method of the present invention is the same with internal gear backward extrusion cold extrusion forming, belongs to metal essenceClose cold-forging forming category; But when the method for the invention is shaped, forming punch relative position in preformed blank endoporus keeps steadyFixed, moving about and beat phenomenon while thering is no drift motion in backward extrusion process; Therefore the internal tooth being shaped depends on shaping completelyThe machining accuracy of drift profile of tooth; And there are multiple Precision Machining means as the profile of tooth of forming punch, can meet internal gear completelyShape required precision.
2, the present invention is a kind of internal tooth manufacturing process of high efficiency internal tooth class machine components, and internal tooth forming accuracy is high, inherent qualityGood, stock utilization is high, in the time of batch production, can significantly reduce production costs.
3, the present invention has not only saved great deal of steel, also makes following process amount reduce, and has improved the efficiency of machining, machine tool plantThe amount in man-hour of machining also obviously declines, and reaches object energy-conservation, low-carbon (LC).
4, the method for the invention is in the time that internal tooth is shaped, and extrusion deformation degree is generally between 15%-25%, and shaping dies is stressed little,Life-span is long.
Brief description of the drawings
Fig. 1 is the process principle figure of internal gear diameter-reducing formation in detailed description of the invention;
Wherein: (a) scheming for internal gear is shaped, is (b) partial enlarged drawing of A in (a), be (c) that figure is processed in the demoulding;
Fig. 2 is technical process principle flow chart;
Wherein: (1) is blanking, and (2) are jumping-up, and (3) are diameter-reducing formation, (4) are that blank is inverted, and draw for internal gear (5)Be stretched into shape, (6) are for cutting apart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As shown in Figure 2, be technical process schematic diagram of the present invention. A kind of part internal tooth of the present invention accurate forming method, technique stepRapid as follows:
Step 1, blanking base, prepare hollow annular or cup-shaped preformed blank.
Step 2, preformed blank is carried out to soft annealing and surface lubrication processing, comprise vacuum annealing processing, ball blast surfaceReason and phospholeum processing.
Step 3, will have the forming punch of accurate tooth form insert preformed blank, wherein, preformed blank in described step 3Internal diameter is than the outer electrical path length of the forming punch of the large 0.5%-1.5% of forming punch external diameter. And carry out diameter-reducing formation, obtain one and forming punchProfile accuracy differs the internal gear blank of 1 grade-1.5 grades; As by the soft annealing through surface lubrication processing again of internal gear blankAfter carry out again diameter-reducing formation for the second time, can obtain one and differ the internal gear blank of 0.5 grade-1 grade with forming punch profile accuracy.The process principle figure that is illustrated in figure 1 internal gear diameter-reducing formation in the specific embodiment of the invention, concrete steps are: with a contractingFootpath die is by preformed blank reduced diameter, and the material of preformed blank endoporus enters the work of modular angle α at 2.5 ° of-15 ° of undergauge diesWith under, mobile to end face time, be pressed towards in the profile of tooth groove of forming punch; When the necking deformation amount of undergauge die reachesWhen 8%-15%, just can obtain the internal gear blank suitable with precision with drift shaping part shape.
The method of the invention is in the time that internal tooth is shaped, and extrusion deformation degree is generally between 8%-15%, and shaping dies is stressed little, the life-spanLong. And a kind of part internal tooth accurate forming method of the present invention is the same with internal gear backward extrusion cold extrusion forming, belongs to metal essenceClose cold-forging forming category; But when the method for the invention is shaped, forming punch relative position in preformed blank endoporus is stable,Moving about and beat phenomenon while thering is no drift motion; Therefore the internal tooth being shaped depends on the machining accuracy of forming punch profile of tooth completely.
As using backward extrusion widely in current internal gear manufacturing process, because of the kinematic accuracy of the machine of being stressed and drift andThe guiding clearance impact of die, forming punch can produce and move about and beat in extrusion process, and the teeth directional precision of gear is subject to sternlyGhost image rings, and error amount and drift kinematic error are basically identical. And in internal gear forming process of the present invention, drift and bland positionStablize, make the particularly teeth directional precision of forming accuracy of internal gear, depend primarily on the accuracy of manufacture of drift, be not subject to drift motion essenceDegree impact. And there are multiple Precision Machining means as the profile of tooth of forming punch, therefore can meet internal gear forming accuracy completelyRequirement.
Step 4, to complete internal tooth be shaped internal gear blank carry out machined or cut apart rear machined.
Further, the present invention can, according to the different demands of user, increase reducing formation number of times, uses high-precision forming punch,Thereby the precision that obtains reducing formation is higher and the better internal tooth form part of profile of tooth full level. Meet user to different internal tooth form essencesThe requirement of degree.
Preferably, in step 1, after blanking, carry out jumping-up processing, make blank reach predetermined altitude, then forging and molding hollow annular orCup-shaped preformed blank; In step 4, the internal gear blank that completes internal tooth shaping is carried out machined or cut apart before rear machined, rightComplete internal tooth be shaped internal gear carry out internal gear extend be shaped process.
In sum, the present invention is a kind of internal tooth manufacturing process of high efficiency internal tooth class machine components, internal tooth forming accuracy is high,Inherent quality is good, stock utilization is high, in the time of batch production, can significantly reduce production costs. The present invention has not only saved in a large numberSteel, also make following process amount reduce, and have improved the efficiency of machining, and the workload of machine tool plant's machining also obviously declines,Reach object energy-conservation, low-carbon (LC).
Although prior art scheme of the present invention and preferred embodiment state as above, so it is not in order to limit the present invention. Institute of the present inventionBelong in technical field and have and conventionally know the knowledgeable, without departing from the spirit and scope of the present invention, when doing various variations, replacementWith retouching, there is the shaping of special-shaped inner prop face or annular element etc. as various. Therefore, protection scope of the present invention is when looking rightClaim the person of defining be as the criterion.
Claims (5)
1. a part internal tooth accurate forming method, is characterized in that, processing step is as follows:
Step 1, blanking base, prepare hollow annular or cup-shaped preformed blank;
Step 2, preformed blank is carried out to soft annealing and surface lubrication processing;
Step 3, the forming punch that is shaped with Accurate Tooth is inserted in to preformed blank, and carries out secondary diameter-reducing formation, obtain one withForming punch profile accuracy differs the internal gear blank of 0.5 grade-1 grade;
Step 4, to complete internal tooth be shaped internal gear blank carry out machined or cut apart rear machined;
The concrete steps of described diameter-reducing formation are: with a undergauge die by preformed blank reduced diameter, preformed blank endoporusMaterial enter under the effect of modular angle α at the undergauge die of 2.5 °-15 °, mobile to end face time, be pressed towards forming punchIn profile of tooth groove; In the time that the necking deformation amount of undergauge die reaches 8%-15%, just can obtain and drift shaped portion shape and precisionSuitable internal gear blank.
2. a kind of part internal tooth accurate forming method according to claim 1, is characterized in that, described step 3 will be for makingHave the forming punch of Accurate Tooth to be inserted in preformed blank, carry out diameter-reducing formation for the first time, obtain one with forming punch profile accuracyDiffer the internal gear blank of 1 grade-1.5 grades; Internal gear blank softening is annealed and carry out carrying out second again after surface lubrication processingInferior diameter-reducing formation, obtains one and differs the internal gear blank of 0.5 grade-1 grade with forming punch profile accuracy.
3. a kind of part internal tooth accurate forming method according to claim 1, is characterized in that preformation in described step 3Shape blank internal diameter is than the outer electrical path length of the forming punch of the large 0.5%-1.5% of forming punch external diameter.
4. a kind of part internal tooth accurate forming method according to claim 1, is characterized in that, described step 4 is to completingThe internal gear blank that internal tooth is shaped carries out machined or cuts apart before rear machined, again carries out soft to the internal gear that completes internal tooth shapingAnnealing and internal gear are extended to be shaped and are processed.
5. a kind of part internal tooth accurate forming method according to claim 1, is characterized in that, described step 2 is to preformationShape blank carries out soft annealing and surface lubrication processing comprises vacuum annealing processing, ball blast surface treatment and phospholeum processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491155.5A CN103567728B (en) | 2013-10-18 | 2013-10-18 | A kind of part internal tooth accurate forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491155.5A CN103567728B (en) | 2013-10-18 | 2013-10-18 | A kind of part internal tooth accurate forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103567728A CN103567728A (en) | 2014-02-12 |
| CN103567728B true CN103567728B (en) | 2016-05-11 |
Family
ID=50040901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310491155.5A Active CN103567728B (en) | 2013-10-18 | 2013-10-18 | A kind of part internal tooth accurate forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103567728B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916789B (en) * | 2021-01-29 | 2023-02-10 | 南京康尼精密机械有限公司 | Clean forming process method of internal tooth profile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673660A (en) * | 1969-11-13 | 1972-07-04 | Joseph J Osplack | Method of producing internal gearing |
| CN1517174A (en) * | 2003-01-17 | 2004-08-04 | 谢智庆 | Manufucturing method of notch wheel having 90-180 teeth and notch wheel made by gaid method |
| CN101214510A (en) * | 2008-01-08 | 2008-07-09 | 江苏森威集团有限责任公司 | Blind Hole Internal Gear Precision Forming Method and Internal Tooth Forming Die |
| CN101402124A (en) * | 2007-10-03 | 2009-04-08 | 株式会社电装 | Method of manufacturing gear from metal sheet and the gear manufactured by the method |
| CN101547759A (en) * | 2006-11-02 | 2009-09-30 | 日本精工株式会社 | Rack and production method thereof |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150109A (en) * | 1997-08-01 | 1999-02-23 | Jatco Corp | Internal gear and its production by sintering |
-
2013
- 2013-10-18 CN CN201310491155.5A patent/CN103567728B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673660A (en) * | 1969-11-13 | 1972-07-04 | Joseph J Osplack | Method of producing internal gearing |
| CN1517174A (en) * | 2003-01-17 | 2004-08-04 | 谢智庆 | Manufucturing method of notch wheel having 90-180 teeth and notch wheel made by gaid method |
| CN101547759A (en) * | 2006-11-02 | 2009-09-30 | 日本精工株式会社 | Rack and production method thereof |
| CN101402124A (en) * | 2007-10-03 | 2009-04-08 | 株式会社电装 | Method of manufacturing gear from metal sheet and the gear manufactured by the method |
| CN101214510A (en) * | 2008-01-08 | 2008-07-09 | 江苏森威集团有限责任公司 | Blind Hole Internal Gear Precision Forming Method and Internal Tooth Forming Die |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103567728A (en) | 2014-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104259377B (en) | The integrated automatic press moulding process of chain, chain transition carrier bar and chain transition carrier bar | |
| CN110091138A (en) | A kind of novel hollow production method of shaft | |
| CN102335810B (en) | Method for forming precise slender internal spline tube | |
| CN203356523U (en) | Manufacturing device for flange nut through cold heading | |
| CN103624502A (en) | Cold-forging plastic molding technology of brake piston | |
| CN103934638A (en) | Precision external spline pipe forming method | |
| CN102728773A (en) | One-time cold-forging blocking forming method for inner star wheel | |
| CN103212635B (en) | Car transmission synchronizer gear ring fine blanking and deep drawing combined forming process and mold | |
| CN105945521B (en) | A kind of square axle sleeve with square hole and its processing method and application | |
| CN203508906U (en) | Multi-station continuous hot-forging die set for half-axle gears of driving axles | |
| CN108080544A (en) | A kind of double installing plate stator blade blank manufacturing process of compressor | |
| CN103567728B (en) | A kind of part internal tooth accurate forming method | |
| CN103658213A (en) | Novel extrusion method for efficiently machining straight spur gear | |
| CN103599954A (en) | Cold extrusion forming process and mold of internal gear | |
| CN103447773A (en) | Processing technology for fixed seat | |
| CN109604390B (en) | Thin-wall sheet metal part forming method | |
| CN101716626A (en) | Shrinkage mold for suspended drawn parts of cold stamped thin plates | |
| CN104275427A (en) | Manufacturing method of multi-station die for multi-step shafts | |
| CN207043259U (en) | A kind of shaping dies of valley road forging | |
| CN204365938U (en) | A kind of cold upsetting die of car manufacturing automobile outer-hexagonal ball stud | |
| CN103302459A (en) | Machining method of automobile clutch damping shaft sleeve | |
| CN209935740U (en) | Cold forming multi-station die for inner square sleeve nut | |
| CN108971302B (en) | Processing method of thin-walled piece inner flanging | |
| CN108246889B (en) | Mould and method for processing basket-shaped retainer by using pipe | |
| CN103350121B (en) | Method for processing cup-shaped thin-walled member by using cold extrusion process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160608 Address after: 224311, Jiangsu County, Yancheng City County, Sheyang Province Hing town west (Red Star Industrial Park) Patentee after: YANCHENG JINGANGXING PRECISION FORGING CO., LTD. Address before: 224311, Jiangsu County, Yancheng City province Sheyang County Town Industrial Park Patentee before: Yancheng Buddha's warrior attendant star Gear Factory |