CN101214510B - Blind hole internal gear precision forming method and internal tooth forming mold - Google Patents

Blind hole internal gear precision forming method and internal tooth forming mold Download PDF

Info

Publication number
CN101214510B
CN101214510B CN2008100193916A CN200810019391A CN101214510B CN 101214510 B CN101214510 B CN 101214510B CN 2008100193916 A CN2008100193916 A CN 2008100193916A CN 200810019391 A CN200810019391 A CN 200810019391A CN 101214510 B CN101214510 B CN 101214510B
Authority
CN
China
Prior art keywords
die
gear
punch
blind hole
internal gear
Prior art date
Application number
CN2008100193916A
Other languages
Chinese (zh)
Other versions
CN101214510A (en
Inventor
杨海平
陈爱华
靳天龙
Original Assignee
江苏森威集团有限责任公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏森威集团有限责任公司 filed Critical 江苏森威集团有限责任公司
Priority to CN2008100193916A priority Critical patent/CN101214510B/en
Publication of CN101214510A publication Critical patent/CN101214510A/en
Application granted granted Critical
Publication of CN101214510B publication Critical patent/CN101214510B/en

Links

Abstract

The invention provides a blind hole internal gear fine forming method and an internal gear forming die relating to the metal machinery processing and metal pressing fields of no cutting. The technical steps includes: computer simulation analyzing to study out a process forming scheme-baiting to manufacture roughs-surface intenerating and lubricating processing-fine forming-cutting off redundant part. A convex die profile of an internal gear forming die is corrected according to a gear precision grade tolerance belt and the gear precision is 6 to 5 grade. The surface roughness of the convex die is smaller than 0.5 micron. The thickness of a surface nanometer coat is 0.002 to 0.004 millimeter. A die entrance angle of at end surface of the gear is transited by a semi-arc. An effective width of a minor first flank is between 1.5 and 3 millimeter. A double surface back gap of the minor first flank is 0.3 millimeter smaller than the minor first flank by average. The transition cone angle between the minor first flank of the convex die and a basic die is 3 to 6 degrees. A concave die is formed through interference pressure distribution by adopting 2 to 3 layers of compound dies. The magnitude of interference is 0.4 to 0.5 percent of a matched dimension of a die. The invention has the advantages of short technique line, high manufacture efficiency, good consistence of the gear precision and high intensity.

Description

Blind hole internal gear precision forming method and internal tooth forming mold

Technical field

The present invention relates to not have cutting metal mechanism processing substantially, the plastic precise forming method and the internal tooth forming mold of metal stamping field, especially blind hole internal gear machine components.

Background technology

At present, the gear machine cutting working method is mainly adopted in the manufacturing of blind hole internal gear.There is following defective in this manufacture method: (one) process route is longer, generally will forge multiple tracks machining processes such as base, thick finish turning processing, Gear Shaping; (2) production efficiency is lower; (3) uniformity of the accuracy of gear is relatively poor; Must leave grinding undercut during (four) owing to Gear Shaping, product structure is increased, intensity reduces.

Summary of the invention

The objective of the invention is to overcome the drawback of existing blind hole internal gear machine cut processing method, provide a kind of process route short, production efficiency height, accuracy of gear high conformity, blind hole internal gear precision forming method and internal tooth forming mold that intensity is high.

Technical solution of the present invention is:

The processing step of blind hole internal gear precision forming method is: (one) simulation analysis of computer, draft substep shaping scheme; (2) blanking base; (3) the softening and lubricated in surface; (4) precision form; (5) excision redundance.

Described blanking base comprises 1. peeling processing, other steel except that special-purpose cold forging steel is carried out peeling process, the groove of removal steel surface and the crackle that stays when rolling; 2. according to shape of product, material plasticity base, blank diameter is 2/3rds to 3/4ths of a product maximum gauge, billet weight be product weight 105~115% between.

1. the softening and lubricated in described surface comprises blank is placed in the vacuum heat treatment furnace, be heated to 700~720 degree Celsius, be incubated 180~300 minutes spheroidizings, furnace temperature is reduced to 530~580 degree Celsius, the air cooling of coming out of the stove makes blank hardness less than rockwell b scale chi 85 MPas; 2. carry out the ball blast surface treatment; 3. under 80~100 degree temperature Celsius, carry out the phospholeum processing.

Described precision form refers to the blank of and lubricated softening through the surface is placed on the mold center position, adopts cold forging forcing press or hydraulic press oppositely to push the one or many Plastic Forming.

The blind hole internal gear internal tooth forming mold mainly is made up of punch and die assembly, the outline of die assembly mould shape and blind hole internal gear product is corresponding, the interior profile geometry and the end surface shape of punch die body shape and blind hole internal gear product are corresponding, it is characterized in that: the punch flank profil is revised according to accuracy of gear grade tolerance range, from the gear compound graduation circle to Gear Root the circle progressively by standard size to minimum limit of size transition, profile accuracy is 6~5 grades, the convex mould surface roughness is less than 0.5 micron, 0.002~0.004 millimeter of convex mould surface nano coating thickness, the modular angle of going into punch increment face adopts semi arch excessive, punch land effective width is between 1.5~3 millimeters, crack, the two-sided back of land is even littler 0.3 millimeter than land, and punch land and basic mode transition cone angle are 3~6 degree; The die assembly adopts 2~3 layers of combination die, and interference is joined pressure and formed, and the magnitude of interference is 0.4~0.5% of a mould fit dimension.

Advantage of the present invention is: (one) adopts cold forging backward extrusion technology processing blind hole internal gear, because cold forging carries out pressure processing at normal temperatures, the metal surface can not produce oxidation, therefore can produce metal parts near net shape, the material and the energy have been saved, reduce manufacturing procedure and equipment, increased substantially production efficiency.(2) because processing products obtained therefrom metal streamline is pressed the profile geometry distribution, so the product mechanical strength is enhanced.(3) because the form of gear tooth partly realizes not having machining, so accuracy of gear high conformity.(4) because the form of gear tooth partly realizes not having machining, and the modular angle of going into punch increment face adopts semi arch excessive, be that arc size is less than the design of gears chamfer dimesion, therefore need not to stay grinding undercut during the processing blind hole internal gear, the gear total length effectively meshes, reduce product structure, improved product strength.

Description of drawings

Fig. 1 is a blind hole internal gear internal tooth forming mold working state schematic representation of the present invention.

Fig. 2 is a punch tooth Profile Design schematic diagram of the present invention.

Fig. 3 is punch margin width of the present invention and transition cone angle schematic diagram.

Fig. 4 is that punch K of the present invention is to land profile of tooth enlarged drawing.

Among the figure: 1, blind hole internal gear product, 2, blank, 3, punch, 4, the die assembly, 5, the punch tooth curve, 6, the flank profil minimum limit of size, 7, the gear compound graduation circle, 8, the Gear Root circle, 9, the transition cone angle, 10, the increment face goes into modular angle, 11, basic mode.

The specific embodiment

Be fabricated to example with the JY60 internal gear with 20 Cr-Mn-Ti materials.

Processing step with 20 Cr-Mn-Ti material precision form JY60 internal gears is:

(1) simulation analysis of computer is drafted substep shaping scheme;

(2) blanking base;

1. adopting diameter is 65 millimeters 20 Cr-Mn-Ti round steel, cutting stock weight 476 grams;

2. with blank (2) diameter car to 64 millimeter;

(3) the softening and lubricated in surface;

1. blank (2) is placed in the heat-treatment furnace, is heated to 770 degree Celsius, be incubated 240 minutes spheroidizings, furnace temperature is reduced to 550 degree Celsius, and the air cooling of coming out of the stove makes blank (2) hardness less than rockwell b scale chi 85 MPas;

2. blank (2) is carried out the ball blast surface treatment;

3. phospholeum processing;

I ceaselessly rolls blank (2) pickling about 10 minutes in 10~20% dilute sulfuric acid aqueous solution of 50~60 degree Celsius;

II cleaned 3~4 minutes with circulating water;

III rolling phosphatization 10~16 minutes in 80~100 degree phosphatization liquid Celsius;

IV cleans with circulating water;

V washed 1~2 minute with 80~100 degree hot water smelts Celsius;

VI spends the saponification of rolling in the saponification liquors Celsius 80~100

VII washed 1~2 minute with 80~100 degree hot water smelts Celsius;

(4) precision form is placed on blank (2) softening through the surface and lubricated in the die assembly (4), and punch (3) oppositely pushes by cold forging forcing press or hydraulic press, the one or many Plastic Forming;

(5) the excision redundance excises the excess stock that flows out from blind hole internal gear product (1) end face with machining mode, and finishes all the other processing according to designing requirement.

The blind hole internal gear internal tooth forming mold is made up of main punch (3) and die assembly (4), the outline of the die body shape of die assembly (4) and blind hole internal gear product (1) is corresponding, and the interior profile geometry and the end surface shape of the die body shape of punch (3) and blind hole internal gear product (1) are corresponding.The tooth curve (5) of punch (3) is revised according to accuracy of gear grade tolerance range, justify from gear compound graduation circle (7) to Gear Root (8) progressively by standard size to the minimum limit of size (6) transition.Profile accuracy is 6~5 grades, and punch (3) surface roughness is less than 0.5 micron, 0.002~0.004 millimeter of punch (3) nano surface coating layer thickness.The modular angle (10) of going into punch (3) increment face adopts semi arch excessive, and arc radius is less than the design of gears chamfering.Punch (3) land effective width is between 1.5~3 millimeters, and the crack inwardly dwindles 0.15 millimeter than land is even behind the land, and punch (3) land and basic mode (11) transition cone angle (9) are 3~6 degree; Die assembly (4) adopts the interference of three layers of shrink ring combination die to join pressure and forms, and the magnitude of interference is 0.4~0.5% of a product design size.

Claims (1)

1. blind hole internal gear internal tooth forming mold, it mainly is made up of punch and die assembly, the outline of die assembly mould shape and blind hole internal gear product is corresponding, the interior profile geometry and the end surface shape of punch die body shape and blind hole internal gear product are corresponding, it is characterized in that: the punch flank profil is revised according to accuracy of gear grade tolerance range, from the gear compound graduation circle to Gear Root the circle progressively by standard size to minimum limit of size transition, profile accuracy is 6~5 grades, the convex mould surface roughness is less than 0.5 micron, 0.002~0.004 millimeter of convex mould surface nano coating thickness, punch increment face is gone into modular angle and is adopted the semi arch transition, punch land effective width is between 1.5~3 millimeters, crack, the two-sided back of land is even littler 0.3 millimeter than land, and punch land and basic mode transition cone angle are 3~6 degree; The die assembly adopts 2~3 layers of combination die, and interference is joined pressure and formed, and the magnitude of interference is 0.4~0.5% of a mould fit dimension.
CN2008100193916A 2008-01-08 2008-01-08 Blind hole internal gear precision forming method and internal tooth forming mold CN101214510B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008100193916A CN101214510B (en) 2008-01-08 2008-01-08 Blind hole internal gear precision forming method and internal tooth forming mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008100193916A CN101214510B (en) 2008-01-08 2008-01-08 Blind hole internal gear precision forming method and internal tooth forming mold

Publications (2)

Publication Number Publication Date
CN101214510A CN101214510A (en) 2008-07-09
CN101214510B true CN101214510B (en) 2010-10-13

Family

ID=39621049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008100193916A CN101214510B (en) 2008-01-08 2008-01-08 Blind hole internal gear precision forming method and internal tooth forming mold

Country Status (1)

Country Link
CN (1) CN101214510B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756247A (en) * 2012-07-30 2012-10-31 武汉华夏精冲技术有限公司 Once fine blanking forming method for thick plate disc
CN103639675A (en) * 2013-12-03 2014-03-19 盐城工学院 Machining method and forming die of overrunning clutch inner raceway surface

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101767118A (en) * 2008-12-31 2010-07-07 江苏汤臣汽车零部件有限公司 Method and equipment for processing inner geared sleeve of automobile
CN101767119A (en) * 2008-12-31 2010-07-07 江苏汤臣汽车零部件有限公司 Method and equipment for processing worm of auto automatic adjusting arm
EP2357048B1 (en) * 2010-02-10 2013-06-05 Feintool Intellectual Property AG Method and device for influencing the cutting and functional areas on fine-cut finished parts
CN102198543B (en) * 2011-03-31 2013-03-06 北京经纬恒润科技有限公司 Gear modeling method and gear modeling device
CN102601595B (en) * 2012-03-07 2013-12-25 四川绵阳重业齿轮有限责任公司 Cold extrusion forming method for 20CrMnTi cylinder spur gear
CN102814408A (en) * 2012-09-05 2012-12-12 成都中弘轨道交通环保产业股份有限公司 Steel plate surface blind hole punching die
CN103464992B (en) * 2013-09-20 2016-06-29 江苏威鹰机械有限公司 Ratchet wheel of park gear of car transmission production technology
CN103567728B (en) * 2013-10-18 2016-05-11 盐城金刚星齿轮厂 A kind of part internal tooth accurate forming method
CN104588426B (en) * 2015-01-14 2016-09-14 江苏创一精锻有限公司 Accumulator tank body forging and forming technology and extrusion die
CN106111876B (en) * 2016-07-14 2018-01-30 江苏保捷精锻有限公司 A kind of processing method of automobile-use reverse gear forging
CN107984182A (en) * 2017-12-17 2018-05-04 江苏威鹰机械有限公司 New-energy automobile gear reducer parking gear manufacturing process
CN108581398A (en) * 2018-04-28 2018-09-28 浙江恒利五金科技有限公司 A kind of high-precision automobile gear and its forging method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86102150A (en) * 1986-03-27 1987-10-28 李冬贵 Tooth-formation of gear by non-cutting machining method
CN1389323A (en) * 2001-06-04 2003-01-08 宋玉泉 Combined straight-gear rolling and extruding finish formation equipment and technological process
CN2690674Y (en) * 2004-03-17 2005-04-06 江苏飞船股份有限公司 Automobile differential mechanism semi axis bevel gear
CN101073871A (en) * 2006-05-19 2007-11-21 上海飞华汽车部件有限公司 Method for machining flange-axis external cylindrical gear of automobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86102150A (en) * 1986-03-27 1987-10-28 李冬贵 Tooth-formation of gear by non-cutting machining method
CN1389323A (en) * 2001-06-04 2003-01-08 宋玉泉 Combined straight-gear rolling and extruding finish formation equipment and technological process
CN2690674Y (en) * 2004-03-17 2005-04-06 江苏飞船股份有限公司 Automobile differential mechanism semi axis bevel gear
CN101073871A (en) * 2006-05-19 2007-11-21 上海飞华汽车部件有限公司 Method for machining flange-axis external cylindrical gear of automobile

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CN 1389323 A,全文.
钱荣芳.冷挤压技术在精密齿轮成型中的应用.农业机械学报36 6.2005,36(6),第131-134页.
钱荣芳.冷挤压技术在精密齿轮成型中的应用.农业机械学报36 6.2005,36(6),第131-134页. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102756247A (en) * 2012-07-30 2012-10-31 武汉华夏精冲技术有限公司 Once fine blanking forming method for thick plate disc
CN102756247B (en) * 2012-07-30 2015-08-12 武汉华夏精冲技术有限公司 A kind of thick plate disc fine-punching formation method
CN103639675A (en) * 2013-12-03 2014-03-19 盐城工学院 Machining method and forming die of overrunning clutch inner raceway surface
CN103639675B (en) * 2013-12-03 2016-07-06 盐城工学院 The processing method of curve surface of raceway and shaping dies in freewheel clutch

Also Published As

Publication number Publication date
CN101214510A (en) 2008-07-09

Similar Documents

Publication Publication Date Title
Practise Heinz Tschaetsch Metal Forming Practise
CN102527767B (en) Cold drawing welded tube manufacture process for high-accuracy hydraulic oil cylinder
Dean The net-shape forming of gears
CN102836895B (en) A kind of manufacture method of special-shaped seamless steel pipe
CN101576125B (en) Method for manufacturing outer ring of tapered roller bearing
CN100484696C (en) Forging and rolling technology and hot rolling and forging apparatus for making large pulley
CN101332488B (en) Cold-forging technique of gear shaft
US7347075B2 (en) Methods for the cold extrusion of metallic elements with dead or through holes and plant for carrying out said methods
CN104117547B (en) A kind of Warm Extrusion gear stick continuous extrusion die and processing method thereof
CN102615224B (en) The method that inner step profile section ring parts radial-axial rolling is shaped
CN103737334B (en) High-strength gear processing technology
JP4907846B2 (en) Gear, gear manufacturing method and apparatus
CN101342566B (en) Integral cold forging technique for angular wheel shaft
CN101695739B (en) Forging process of large tee and large skew tee
CN101422861B (en) Accurate forming method of special-shape deep-hole type parts
CN101579800B (en) Warm/cold forging process for precision forgings with integrated long shafts and inner ball cages
CN104759850B (en) A kind of aluminium alloy height barrier part processing technique
CN101590588B (en) Method for manufacturing mechanical drive chain wheel
CN104646956B (en) Process for machining ball cage bell-like shell
CN102350615B (en) Shunt blocking forming method for star-shaped sleeve
CN102861861A (en) Precision-forging plastic molding technology of bell shell of ball-cage type universal joint
CN101758159A (en) Near isothermal forging method for whole titanium alloy disc shaft forgeable piece
CN103316926B (en) Cold rolling forming method for automotive hub bearing ring part with L-shaped cross section
CN104148888A (en) Process for cold extrusion forming of one-way device spline sleeve
CN101700557B (en) Vertical forging and forming technology of installation edges

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20080709

Assignee: Jiangsu Sunway Group Feida Co., Ltd.

Assignor: Jiangsu Sunway Group Co., Ltd.

Contract record no.: 2013320010120

Denomination of invention: Blind hole internal gear precision forming method and internal tooth forming mold

Granted publication date: 20101013

License type: Exclusive License

Record date: 20130626

Application publication date: 20080709

Assignee: Jiangsu Sunway Group Feida Co., Ltd.

Assignor: Jiangsu Sunway Group Co., Ltd.

Contract record no.: 2013320010120

Denomination of invention: Blind hole internal gear precision forming method and internal tooth forming mold

Granted publication date: 20101013

License type: Exclusive License

Record date: 20130626

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20180222

Address after: 224000 feddong Road, Dafeng District, Yancheng City, Jiangsu Province, No. nine

Patentee after: Jiangsu Sunway Group Feida Co., Ltd.

Address before: 224100, No. 9, Feida East Road, Dafeng City, Jiangsu Province

Patentee before: Jiangsu Sunway Group Co., Ltd.

Effective date of registration: 20180222

Address after: 224000 feddong Road, Dafeng District, Yancheng City, Jiangsu Province, No. nine

Patentee after: Jiangsu Sunway Group Feida Co., Ltd.

Address before: 224100, No. 9, Feida East Road, Dafeng City, Jiangsu Province

Patentee before: Jiangsu Sunway Group Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101013

Termination date: 20190108