CN103612079A - Method for forming splined connection type dual gears - Google Patents
Method for forming splined connection type dual gears Download PDFInfo
- Publication number
- CN103612079A CN103612079A CN201310585834.9A CN201310585834A CN103612079A CN 103612079 A CN103612079 A CN 103612079A CN 201310585834 A CN201310585834 A CN 201310585834A CN 103612079 A CN103612079 A CN 103612079A
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- gear
- end gear
- large end
- spline
- tooth wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a method for forming splined connection type dual gears. The method is used for solving the technical problem of low transmission precision of dual gears formed by an existing method for forming the dual gears. The technical scheme includes that the method comprises manufacturing and grinding teeth of a small-end gear and machining an external spline; machining an outer circle of a large-end gear, and manufacturing an internal spline; heating the large-end gear in an oil furnace and keeping the temperature of the oil furnace unchanged; taking out the large-end gear from the oil furnace, instantly sleeving the internal spline of the large-end gear onto the external spline of the small-end gear to form an assembly, enabling the internal spline to be in interference fit with the external spline and cooling the assembly in a cooling oil groove; manufacturing teeth of the large-end gear on the basis of a basic hole of the small-end gear after the assembly is cooled, and performing hobbing and tooth grinding machining on the large-end gear. The method has the advantages that the splined connection type dual gears are subjected to hot-press, the internal spline on the large-end gear is in interference fit with the external spline on the small-end gear, accordingly, the dual gears can be firmly connected with each other, and the transmission precision of the dual gears is improved to be higher than a fifth level from the seventh level in the prior art.
Description
Technical field
The present invention relates to a kind of forming method of duplicate gear, particularly a kind of forming method of spline joint formula duplicate gear.
Background technology
The forming method of existing duplicate gear has two kinds, and a kind of is global formation, and another kind is minute body formed.
1, the forming method of monoblock type duplicate gear.
Monoblock type dual gear structure is shown in Fig. 2, and its forming method is as follows:
The large end tooth wheel 3 of A, turning processing duplicate gear and the cylindrical of small end gear 1;
Whether B, large end tooth wheel 3, first with gear-hobbing machine processing, optionally carry out roll flute with gear grinding machines;
C, small end gear 1 use gear-hobbing machine or gear shapping machine are processed.Due to structural limitations, small end gear can not carry out roll flute.
Monoblock type duplicate gear is applied in fine module gear or the smaller gear of physical dimension that just can reach 6 grades of above precision without roll flute conventionally.For large modulus and the larger gear of physical dimension, small end gear 1 can not roll flute, in order to improve the accuracy of manufacture, can only adopt gear shapping machine processing, and the utmost points such as precision are up to 7 class precisions.
2, the forming method of Split type duplex gear.
Key connects the structure of Split type duplex gear and sees Fig. 3, and its forming method is as follows:
A, to small end gear 1 tooth processed, roll flute, processing keyway;
B, to large end tooth wheel 3 teeth processed, roll flute, processing keyway;
C, assembling: key 2 is packed into the keyway of small end gear 1, then large end tooth wheel 3 is inserted in to small end gear 1, large end tooth wheel 3 is connected by key 2 with small end gear 1.
This structure is applied in the smaller transmission of stress load conventionally, and for stressed larger transmission, because Split type duplex gear is under impact condition, the changing of the relative positions easily occurs big or small end tooth wheel, causes its transmission accuracy lower.
Summary of the invention
In order to overcome the low deficiency of duplicate gear transmission accuracy of the forming method moulding of existing duplicate gear.The invention provides a kind of forming method of spline joint formula duplicate gear.The method, first to small end gear tooth processed and roll flute, is processed external splines.The large end of reprocessing top circle, internal spline processed.Large end tooth wheel is put into oil oven to be heated and is incubated.Large end tooth wheel is taken out from oil oven, immediately the inner spline housing of large end tooth wheel is packed on the external splines of small end gear, make internal spline and external splines interference fit, then assembly is put into cold oil groove and carried out cooling.After assembly is cooling, using the datum hole of small end gear as the benchmark of large end making tooth-like part of gear, large end tooth wheel is carried out to gear hobbing, roll flute processing.Because hot pressing enters the duplicate gear of spline joint, the internal spline on its large end tooth wheel and the external splines interference fit on small end gear, be connected firmly, and can improve the transmission accuracy of duplicate gear.
The technical solution adopted for the present invention to solve the technical problems is: a kind of forming method of spline joint formula duplicate gear, is characterized in comprising the following steps:
The first step: to small end gear 1 tooth processed and roll flute, processing external splines.
Second step: process large end tooth and take turns 3 cylindricals, internal spline processed.
The 3rd step: large end tooth wheel 3 is put into oil oven, and the oil temperature of oil oven is controlled between 180 ℃～260 ℃, and temperature retention time is: 2～3 hours.
The 4th step: large end tooth wheel 3 is taken out from oil oven, immediately the inner spline housing of large end tooth wheel 3 is packed on the external splines of small end gear 1, internal spline is coordinated with external splines, then assembly is put into cold oil groove and carried out cooling.
The 5th step: after assembly is cooling, using the datum hole of small end gear 1 as the benchmark of large end tooth wheel 3 teeth processed, to large end tooth wheel 3 carry out gear hobbing, roll flute is processed.
Internal spline coordinates employing interference fit with external splines, the magnitude of interference is 0.015mm～0.02mm.
The invention has the beneficial effects as follows: the method, first to small end gear tooth processed and roll flute, is processed external splines.The large end of reprocessing top circle, internal spline processed.Large end tooth wheel is put into oil oven to be heated and is incubated.Large end tooth wheel is taken out from oil oven, immediately the inner spline housing of large end tooth wheel is packed on the external splines of small end gear, make internal spline and external splines interference fit, then assembly is put into cold oil groove and carried out cooling.After assembly is cooling, using the datum hole of small end gear as the benchmark of large end making tooth-like part of gear, large end tooth wheel is carried out to gear hobbing, roll flute processing.Because hot pressing enters the duplicate gear of spline joint, the internal spline on its large end tooth wheel and the external splines interference fit on small end gear, be connected firmly, and the transmission accuracy of duplicate gear is brought up to more than 5 grades by 7 grades of background technology.
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated.
Accompanying drawing explanation
Fig. 1 is the duplicate gear schematic diagram of the forming method moulding of spline joint formula duplicate gear of the present invention.
Fig. 2 is the structural representation of background technology monoblock type duplicate gear.
Fig. 3 is the structural representation that background technology key connects Split type duplex gear.
In figure, 1-small end gear, 2-key, the large end tooth wheel of 3-.
The specific embodiment
With reference to Fig. 1.The forming method concrete steps of spline joint formula duplicate gear of the present invention are as follows:
Duplicate gear adopts split type hot pressing to enter spline joint formula structure, and internal spline adopts interference fit with coordinating of external splines, and the magnitude of interference is 0.015mm～0.02mm, and its forming method is as follows:
The first step: processing small end gear 1.
To small end gear 1 tooth processed and roll flute, processing external splines.
Second step: process large end tooth wheel 3(but tooth not processed).
Process large end tooth and take turns 3 cylindricals, internal spline processed.
The 3rd step: the large end tooth wheel 3 of preheating.
By large end tooth wheel 3(tooth processed) put into oil oven, the oil temperature of oil oven is controlled between 180 ℃～260 ℃, and temperature retention time is: 2～3 hours.
The 4th step: assembling.
Large end tooth wheel 3 is taken out from oil oven, immediately the inner spline housing of large end tooth wheel 3 is packed on the external splines of small end gear 1, internal spline is coordinated with external splines, then assembly is put into cold oil groove and carried out cooling.
The 5th step: hold greatly making tooth-like part of gear.
After assembly is cooling, using the datum hole of small end gear 1 as the benchmark of large end tooth wheel 3 teeth processed, to large end tooth wheel 3 carry out gear hobbing, roll flute is processed.
After testing, the transmission accuracy of duplicate gear has reached more than 5 grades.
Claims (3)
1. a forming method for spline joint formula duplicate gear, is characterized in that comprising the following steps:
The first step: to small end gear 1 tooth processed and roll flute, processing external splines;
Second step: process large end tooth and take turns 3 cylindricals, internal spline processed;
The 3rd step: large end tooth wheel 3 is put into oil oven, and the oil temperature of oil oven is controlled between 180 ℃～260 ℃, and temperature retention time is: 2～3 hours;
The 4th step: large end tooth wheel 3 is taken out from oil oven, immediately the inner spline housing of large end tooth wheel 3 is packed on the external splines of small end gear 1, internal spline is coordinated with external splines, then assembly is put into cold oil groove and carried out cooling;
The 5th step: after assembly is cooling, using the datum hole of small end gear 1 as the benchmark of large end tooth wheel 3 teeth processed, to large end tooth wheel 3 carry out gear hobbing, roll flute is processed.
2. the forming method of spline joint formula duplicate gear according to claim 1, is characterized in that: described internal spline coordinates employing interference fit with external splines.
3. the forming method of spline joint formula duplicate gear according to claim 2, is characterized in that: the magnitude of interference of described interference fit is 0.015mm～0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585834.9A CN103612079A (en) | 2013-11-18 | 2013-11-18 | Method for forming splined connection type dual gears |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585834.9A CN103612079A (en) | 2013-11-18 | 2013-11-18 | Method for forming splined connection type dual gears |
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| Publication Number | Publication Date |
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| CN103612079A true CN103612079A (en) | 2014-03-05 |
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| CN201310585834.9A Pending CN103612079A (en) | 2013-11-18 | 2013-11-18 | Method for forming splined connection type dual gears |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105080942A (en) * | 2015-09-28 | 2015-11-25 | 四川制动科技股份有限公司 | Method for recycling scrapped valve body with poor body-sleeve fit |
| CN105149863A (en) * | 2015-07-01 | 2015-12-16 | 上海振华重工集团(南通)传动机械有限公司 | Installation process of large end gear |
| CN105587841A (en) * | 2016-02-26 | 2016-05-18 | 蚌埠市唐人机械科技有限公司 | Small duplicate gear suitable for mass production and capable of bearing high torque and production method of small duplicate gear |
| CN107253028A (en) * | 2017-06-12 | 2017-10-17 | 燕凌飞 | A kind of processing method of nest |
| CN108526828A (en) * | 2018-04-12 | 2018-09-14 | 宣城东海汽车转向部件有限公司 | A kind of production method of full-rolling type spline pair |
| CN111055091A (en) * | 2019-12-30 | 2020-04-24 | 綦江齿轮传动有限公司 | High-position machining method for duplicate gear |
| CN111673401A (en) * | 2020-06-28 | 2020-09-18 | 汉德车桥(株洲)齿轮有限公司 | Processing method of cylindrical gear of electric drive axle and cylindrical gear of electric drive axle |
| CN112589400A (en) * | 2020-10-19 | 2021-04-02 | 江苏华永复合材料有限公司 | High-precision duplex planetary gear machining process |
Citations (4)
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|---|---|---|---|---|
| GB713587A (en) * | 1951-08-08 | 1954-08-11 | Porsche Ferdinand A | Improvements in and relating to double toothed wheels, more particularly slide wheels, for change speed gears |
| CN102357846A (en) * | 2011-10-17 | 2012-02-22 | 河南柴油机重工有限责任公司 | Press mounting clamp and press mounting method for duplex spiral gear |
| CN102489976A (en) * | 2011-11-29 | 2012-06-13 | 山东日新复合材料有限公司 | Processing technology of conveying chain gear shaft and improved manufacturing process of duplex gear |
| CN202629000U (en) * | 2012-06-12 | 2012-12-26 | 重庆神箭汽车传动件有限责任公司 | Duplicate gear of electric forklift reducer |
-
2013
- 2013-11-18 CN CN201310585834.9A patent/CN103612079A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB713587A (en) * | 1951-08-08 | 1954-08-11 | Porsche Ferdinand A | Improvements in and relating to double toothed wheels, more particularly slide wheels, for change speed gears |
| CN102357846A (en) * | 2011-10-17 | 2012-02-22 | 河南柴油机重工有限责任公司 | Press mounting clamp and press mounting method for duplex spiral gear |
| CN102489976A (en) * | 2011-11-29 | 2012-06-13 | 山东日新复合材料有限公司 | Processing technology of conveying chain gear shaft and improved manufacturing process of duplex gear |
| CN202629000U (en) * | 2012-06-12 | 2012-12-26 | 重庆神箭汽车传动件有限责任公司 | Duplicate gear of electric forklift reducer |
Non-Patent Citations (1)
| Title |
|---|
| 佟玉霞等: "高精度双联齿轮的加工", 《金属加工（冷加工）》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149863A (en) * | 2015-07-01 | 2015-12-16 | 上海振华重工集团(南通)传动机械有限公司 | Installation process of large end gear |
| CN105080942A (en) * | 2015-09-28 | 2015-11-25 | 四川制动科技股份有限公司 | Method for recycling scrapped valve body with poor body-sleeve fit |
| CN105587841A (en) * | 2016-02-26 | 2016-05-18 | 蚌埠市唐人机械科技有限公司 | Small duplicate gear suitable for mass production and capable of bearing high torque and production method of small duplicate gear |
| CN107253028A (en) * | 2017-06-12 | 2017-10-17 | 燕凌飞 | A kind of processing method of nest |
| CN108526828A (en) * | 2018-04-12 | 2018-09-14 | 宣城东海汽车转向部件有限公司 | A kind of production method of full-rolling type spline pair |
| CN111055091A (en) * | 2019-12-30 | 2020-04-24 | 綦江齿轮传动有限公司 | High-position machining method for duplicate gear |
| CN111673401A (en) * | 2020-06-28 | 2020-09-18 | 汉德车桥(株洲)齿轮有限公司 | Processing method of cylindrical gear of electric drive axle and cylindrical gear of electric drive axle |
| CN112589400A (en) * | 2020-10-19 | 2021-04-02 | 江苏华永复合材料有限公司 | High-precision duplex planetary gear machining process |
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Application publication date: 20140305 |
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