CN103707017A - Automatically continuously variable transmission (CVT) V-shaped belt pulley axle finish-forging and plastic- molding process - Google Patents

Automatically continuously variable transmission (CVT) V-shaped belt pulley axle finish-forging and plastic- molding process Download PDF

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Publication number
CN103707017A
CN103707017A CN201210373700.6A CN201210373700A CN103707017A CN 103707017 A CN103707017 A CN 103707017A CN 201210373700 A CN201210373700 A CN 201210373700A CN 103707017 A CN103707017 A CN 103707017A
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China
Prior art keywords
forging
blank
belt wheel
tooth
molding
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CN201210373700.6A
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Chinese (zh)
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CN103707017B (en
Inventor
张太良
万永福
张扣宝
黄恒桃
申剑
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江苏威鹰机械有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels

Abstract

The invention discloses an automatically continuously variable transmission (CVT) V-shaped belt pulley axle finish-forging and plastic-molding process including the steps of 1, warm forging and plastic molding, 2, annealing at low temperature, lathing including procedures of surface flash and burr removal, shot blasting, phosphating and saponification, and then reducing diameters of shanks of forge pieces subjected to cold squeezing and finishing until meeting the dimension requirements, and 3, finally molding by the cold squeezing and finishing process. Products produced by the process have the advantages of stable quality, high intensity and density and impact resistance; a great quantity of funding needed in the process of machining tooth surfaces by machine tools is reduced, production efficiency is high, raw materials are saved, the process of machining by the machine tools after hot forging is replaced, requirements for product precision are met, production cycle can be shortened, manufacturing cost can be lowered, and the process accords with the development trend of the manufacturing industry all over the world at present.

Description

CVT automatic gear-box V-type belt shaft finish forge plastic forming technique
Technical field
The present invention relates to CVT gearbox V-type belt shaft, relate in particular to a kind of CVT automatic gear-box V-type belt shaft finish forge plastic forming technique.
Background technology
CVT gearbox is exactly there is no clearly concrete gear, similar automatic gear-box in operation, but the variation of speed ratio is but different from the trip stop process of automatic gear-box, but continuous, so power transmission is lasting and smooth and easy.V-type belt shaft is that CVT gearbox is used for transmitting motion and turning round short mechanical key parts, and its inherent quality and precision directly affect the total quality of gearbox.China Intellectual Property Office discloses CN201110416697.7 driving belt pulley shaft, it mainly comprises input and band wheel face, input is arranged on the rear portion with wheel face, front portion with wheel face is belt wheel construction section, the front portion of belt wheel construction section is belt wheel control section, and the diameter of belt wheel construction section is greater than belt wheel control section, and is evenly equipped with oil circuit mouth on the end face of belt wheel construction section, in belt wheel control section, be provided with and oil circuit groove, the position of described oil circuit groove coordinates with the position of oil circuit mouth.It is arranged on oil circuit mouth on the end face of belt wheel construction section, thereby has reduced the length of belt wheel control section, and then has reduced the length of whole driving belt pulley shaft.Manufacturing firm all adopts following explained hereafter both at home and abroad at present: 1. moulding → heat treatment → the machine cut of freely pull out → gathering stock of blanking → heating (1100~1150 ℃) → pneumatic hammer is Gear shape process one by one, and this production technology process is complicated.Effect is very low, and the production cycle is longer, and production cost is high, and difficult quality guarantee.
summary of the invention
The present invention is directed to the deficiencies in the prior art, mainly solve existing conventional machining process, machine tool drops into more, machining has been wasted metal material, the low production cycle of labor productivity is long, the technical problem that processing cost is high, adopts the cold compound finish forge plastic forming technology of temperature, and a kind of CVT automatic gear-box V-type belt shaft finish forge plastic forming technique is provided.
The present invention is achieved by the following technical solution:
CVT automatic gear-box V-type belt shaft finish forge plastic forming technique, comprises the following steps:
1. warm forging plastic forming: solid cylindrical metal stock is heated to forging temperature, the taper off cylindrical shank blank of trend of input, belt wheel and the external diameter that die forging goes out frustum cone structure, the angle with wheel face and horizontal plane formation of described belt wheel is 11 °, and the another side of the described peripheral belt wheel of input is provided with the round bump with external tooth;
2. process annealing, Vehicle Processing: remove surperficial overlap, burr, ball blast, phosphatization, saponification and process, tube reducing processing: push forging shank diameter after finishing tube reducing again to cold, thereby reach dimensional requirement;
3. coldly push finishing moulding: with tooth die, to the profile of tooth of the round bump with external tooth is cold, push finishing, cold-finish is that profile of tooth is without the forging of following process.
Described warm forging moulding process comprises a, fracture: intercepting metal bar; B, base ball blast: to metal bar sizing scale, turning, end face chamfering, ball blast: blank is put into shot-blasting machine and carry out surface sand-blasting; C, coating: above-mentioned metal bar is heated to 150-200 ℃, and rare graphite soaks, and carries out face coat; Forward extrusion after d, heating: by the good blank of above-mentioned coating, be heated to 800-900 ℃ and put into die, the upper surface of blank is pushed, three sections of column type bars that make that bar becomes that diameter, length differ and the changeover portion between them; E, jumping-up extruding: the blank that forward extrusion has been got well is put into jumping-up die immediately, in the mold cavity of sealing, blank is carried out to jumping-up extruding, forms two head rod portions and telophragma portion; F, preformed forward extrusion: in the mold cavity of sealing, blank is pushed, input, belt wheel and the external diameter that the forms frustum cone structure cylindrical shank blank of trend that tapers off, the angle with wheel face and horizontal plane formation of described belt wheel is 11 °, and the another side of the described peripheral belt wheel of input is provided with the round bump with external tooth.
The present invention compared with prior art has following beneficial effect:
Constant product quality, intensity that the present invention produces are large, density is high, shock resistance, adopt finish forge technology, reduced and adopted the substantial contribution that the machine tooling flank of tooth brings to drop into, production effect is high, save raw material, substituted a large amount of processing methods that adopt machine tooling after forge hot, can meet Product Precision requirement, can shorten production cycle and manufacturing cost again, also meet the trend of world today's development of manufacturing simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the structural representation of embodiment of the present invention plastic extruding deformation process.
Sequence number in figure: 1, input, 2, belt wheel, 3, shank, 4, band wheel face, 5, round bump, 6, bar portion, 7, dish portion.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings 1, accompanying drawing 2 and accompanying drawing 3, technical scheme of the present invention is described in further detail.
Embodiment mono-: shown in Fig. 1, Fig. 2, a kind of CVT automatic transmission V-type belt shaft fine forge piece, comprises input 1, belt wheel 2 and shank 3, and described fine forge piece is overall structure; Described input 1 is arranged on the lower end of belt wheel 2, and described input 1 is frustum cone structure, and the angle with wheel face 4 and horizontal plane formation of described belt wheel 2 is 11 °, and the another side of the described peripheral belt wheel 2 of input 1 is provided with the round bump 5 with external tooth; The upper end of described belt wheel 2 is shank 3, and described shank 3 is external diameter taper off three sections of cylinders and the changeover portion between them of trend.
Its plastic forming technique, comprises the following steps: 1. warm forging plastic forming: comprise a, fracture: circular saw intercepting metal bar; B, base ball blast: to metal bar sizing scale, turning, end face chamfering, ball blast: blank is put into shot-blasting machine and carry out surface sand-blasting; C, coating: above-mentioned metal bar is heated to 150-200 ℃, and rare graphite soaks, and carries out face coat; Forward extrusion after d, heating: by the good blank of above-mentioned coating, be heated to 800-900 ℃ and put into die, the upper surface of blank is pushed, three sections of column type bars that make that bar becomes that diameter, length differ and the changeover portion between them; E, jumping-up extruding: the blank that forward extrusion has been got well is put into jumping-up die immediately, in the mold cavity of sealing, blank is carried out to jumping-up extruding, forms two head rod portions 6 and telophragma portion 7; F, preformed forward extrusion: in the mold cavity of sealing, blank is pushed, input 1, belt wheel 2 and the external diameter that forms frustum cone structure cylindrical shank 3 blanks of trend that taper off, the angle with wheel face 4 and horizontal plane formation of described belt wheel 2 is 11 °, and the another side of the described peripheral belt wheel 2 of input 1 is provided with the round bump 5 with external tooth;
2. process annealing, Vehicle Processing: remove surperficial overlap, burr, ball blast, phosphatization, saponification and process, tube reducing processing: push forging shank diameter after finishing tube reducing again to cold, thereby reach dimensional requirement;
3. coldly push finishing moulding: with tooth die, to the profile of tooth of the round bump 5 with external tooth is cold, push finishing, cold-finish is that profile of tooth is without the forging of following process.
Embodiment bis-: a kind of CVT automatic gear-box V-type belt shaft finish forge plastic forming technique, and production stage is with embodiment mono-, and difference is that described input 1 is two different frustum cone structures of conicity.
Embodiment tri-: a kind of CVT automatic gear-box V-type belt shaft finish forge plastic forming technique, and production stage is with embodiment mono-, and difference is that described input 1 connects column structure outward for round platform.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention, above scheme being done that does not depart from technical solution of the present invention, within all still belonging to protection domain of the present invention.

Claims (2)

1.CVT automatic gear-box V-type belt shaft finish forge plastic forming technique, comprises the following steps:
1. warm forging plastic forming: solid cylindrical metal stock is heated to forging temperature, the input that die forging goes out frustum cone structure (1), belt wheel (2) with taper off the (3) blank of cylindrical shank of trend of external diameter, described belt wheel (2) with wheel face, be (4) 11 ° with the angle that horizontal plane forms, with the round bump of external tooth (5) described input (1) peripheral belt wheel another side is (2) provided with;
2. process annealing, Vehicle Processing: remove surperficial overlap, burr, ball blast, phosphatization, saponification and process, tube reducing processing: push forging shank diameter after finishing tube reducing again to cold, thereby reach dimensional requirement;
3. coldly push finishing moulding: with tooth die, to the profile of tooth (5) of the round bump with external tooth is cold, push finishing, cold-finish is that profile of tooth is without the forging of following process.
2. CVT automatic gear-box V-type belt shaft finish forge plastic forming technique according to claim 1, is characterized in that: described warm forging moulding process comprises a, fracture: intercepting metal bar; B, base ball blast: to metal bar sizing scale, turning, end face chamfering, ball blast: blank is put into shot-blasting machine and carry out surface sand-blasting; C, coating: above-mentioned metal bar is heated to 150-200 ℃, and rare graphite soaks, and carries out face coat; Forward extrusion after d, heating: by the good blank of above-mentioned coating, be heated to 800-900 ℃ and put into die, the upper surface of blank is pushed, three sections of column type bars that make that bar becomes that diameter, length differ and the changeover portion between them; E, jumping-up extruding: the blank that forward extrusion has been got well is put into jumping-up die immediately, in the mold cavity of sealing, blank is carried out to jumping-up extruding, form two head rod portions (6) and telophragma portion (7); F, preformed forward extrusion: in the mold cavity of sealing, blank is pushed, the input that forms frustum cone structure (1), belt wheel (2) with taper off the (3) blank of cylindrical shank of trend of external diameter, described belt wheel (2) with wheel face, with the angle that horizontal plane forms be (4)
11 °, with the round bump of external tooth (5) described input (1) peripheral belt wheel another side is (2) provided with.
CN201210373700.6A 2012-10-01 2012-10-01 CVT automatic gear-box V-type belt wheel axle finish forge plastic forming technique Active CN103707017B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN106672053A (en) * 2017-01-02 2017-05-17 苏州银涛精密锻造有限公司 Central spindle for baby carriage
CN107537961A (en) * 2016-06-29 2018-01-05 韩虎产业株式会社 The manufacture method of long-shaft type wheel shaft with side tooth form
CN109702137A (en) * 2017-10-26 2019-05-03 加特可株式会社 The manufacturing method of variable v-belt drive pulley shaft
CN109702130A (en) * 2017-10-26 2019-05-03 加特可株式会社 Model is used in forging
CN109759532A (en) * 2017-11-10 2019-05-17 加特可株式会社 Axis jumping-up processing method and the shaft member of axis jumping-up processing
CN110026751A (en) * 2019-05-23 2019-07-19 江苏太平洋齿轮传动有限公司 A kind of manufacturing method of bevel planet gear oil groove

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CN1084438A (en) * 1992-09-19 1994-03-30 江兴锻压工业股份有限公司 (TJ) foreign steamer crude green body manufacture method of truck drive shaft CV joint
CN1337331A (en) * 2000-08-04 2002-02-27 江苏太平洋精密锻造有限公司 Process of making blank of inner spider for constant-speed cardan of automobile
US6711817B2 (en) * 1999-07-13 2004-03-30 Seiichi Kotani Hypoid ring gear for differentials and method of producing the same
US20090133262A1 (en) * 2005-06-21 2009-05-28 Honda Motor Co., Ltd. Method for Producing Outer Ring Member of Constant Velocity Universal Joint
CN101695806A (en) * 2009-09-18 2010-04-21 江苏太平洋精密锻造有限公司 Process for manufacturing backward gear of automobile gearbox
CN102248101A (en) * 2011-06-15 2011-11-23 江苏创一精锻有限公司 Whole forging near net forming process for inner ball cage sliding sleeve
CN102463320A (en) * 2010-11-11 2012-05-23 江苏威鹰机械有限公司 Cold forging precise forming process for mechanical transmission gear shaft
CN102518642A (en) * 2011-12-14 2012-06-27 承田汽车配件工业(浙江)有限公司 Driving belt pulley shaft

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CN1084438A (en) * 1992-09-19 1994-03-30 江兴锻压工业股份有限公司 (TJ) foreign steamer crude green body manufacture method of truck drive shaft CV joint
US6711817B2 (en) * 1999-07-13 2004-03-30 Seiichi Kotani Hypoid ring gear for differentials and method of producing the same
CN1337331A (en) * 2000-08-04 2002-02-27 江苏太平洋精密锻造有限公司 Process of making blank of inner spider for constant-speed cardan of automobile
US20090133262A1 (en) * 2005-06-21 2009-05-28 Honda Motor Co., Ltd. Method for Producing Outer Ring Member of Constant Velocity Universal Joint
CN101695806A (en) * 2009-09-18 2010-04-21 江苏太平洋精密锻造有限公司 Process for manufacturing backward gear of automobile gearbox
CN102463320A (en) * 2010-11-11 2012-05-23 江苏威鹰机械有限公司 Cold forging precise forming process for mechanical transmission gear shaft
CN102248101A (en) * 2011-06-15 2011-11-23 江苏创一精锻有限公司 Whole forging near net forming process for inner ball cage sliding sleeve
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN107537961A (en) * 2016-06-29 2018-01-05 韩虎产业株式会社 The manufacture method of long-shaft type wheel shaft with side tooth form
CN106672053A (en) * 2017-01-02 2017-05-17 苏州银涛精密锻造有限公司 Central spindle for baby carriage
CN109702137A (en) * 2017-10-26 2019-05-03 加特可株式会社 The manufacturing method of variable v-belt drive pulley shaft
CN109702130A (en) * 2017-10-26 2019-05-03 加特可株式会社 Model is used in forging
CN109702137B (en) * 2017-10-26 2021-03-19 加特可株式会社 Method for manufacturing pulley shaft for belt type stepless transmission
CN109759532A (en) * 2017-11-10 2019-05-17 加特可株式会社 Axis jumping-up processing method and the shaft member of axis jumping-up processing
CN109759532B (en) * 2017-11-10 2020-07-24 加特可株式会社 Shaft upsetting method and shaft member for shaft upsetting
CN110026751A (en) * 2019-05-23 2019-07-19 江苏太平洋齿轮传动有限公司 A kind of manufacturing method of bevel planet gear oil groove
CN110026751B (en) * 2019-05-23 2021-04-06 江苏太平洋齿轮传动有限公司 Manufacturing method of oil groove of planetary bevel gear

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