CN103639536B - A kind of gear hobbing tooling for processing automatic transmission power transmission shaft - Google Patents
A kind of gear hobbing tooling for processing automatic transmission power transmission shaft Download PDFInfo
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- CN103639536B CN103639536B CN201310585289.3A CN201310585289A CN103639536B CN 103639536 B CN103639536 B CN 103639536B CN 201310585289 A CN201310585289 A CN 201310585289A CN 103639536 B CN103639536 B CN 103639536B
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Abstract
The present invention discloses a kind of gear hobbing tooling for processing automatic transmission power transmission shaft, fixes bottom Connection Block with base top; The upper end of Connection Block is followed successively by conical section and cylindrical section from top to bottom, and its middle cylindrical section is set with a positioning seat; Long draw is followed successively by thread segment, large footpath section, path section and lower thread segment from top to bottom, and on long draw, thread segment is set with cover plate and expansion set; Expansion set centre bore is made up of the cylindrical hole section on top and the bellmouth section of bottom, and bellmouth section contacts with the conical section of Connection Block; The path section of long draw is located in Connection Block centre bore, and lower thread segment is coaxially connected with the top of short rod.The present invention with the bottom of workpiece center hole for positioning datum carrys out the external tooth of processing work bottom, instead of as before with the whole centre bore of workpiece for positioning datum, so just make the accumulation precision of workpiece center hole cannot affect the machining accuracy of workpiece external tooth, so just can ensure the machining accuracy of power transmission shaft upper end external tooth well.
Description
Technical field
The present invention relates to a kind of gear hobbing tooling, specifically, particularly relating to a kind of gear hobbing tooling for processing automatic transmission power transmission shaft.
Background technology
Power transmission shaft in automatic transmission is a long hollow shaft, and the wall thickness of this power transmission shaft is thinner, and the bottom of power transmission shaft is provided with external tooth.At present, during the external tooth of processing power transmission shaft bottom, in the centre bore of power transmission shaft, wear a long mandrel, and the mode that coordinates of passing hole axle with the centre bore of power transmission shaft for positioning datum, process the external tooth of power transmission shaft bottom.
The defect of existing gear hobbing mode is as follows: because power transmission shaft is a long hollow shaft, the wall thickness of this power transmission shaft is thinner, the machining accuracy in such center transmission shaft hole is just difficult to be guaranteed, and existing technique with this centre bore for positioning datum processes the external tooth of power transmission shaft bottom, so just the easy accumulated error by centre bore is reacted on external tooth, thus make the external tooth that processes eccentric, and then make the machining accuracy of this external tooth overproof.In addition, because power transmission shaft is major axis, install and remove all very inconvenient, clamping efficiency so again.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of gear hobbing tooling for processing automatic transmission power transmission shaft, for ensureing the machining accuracy of power transmission shaft upper end external tooth, and improves clamping efficiency.
Technical scheme of the present invention is as follows: a kind of gear hobbing tooling for processing automatic transmission power transmission shaft, it is characterized in that: comprise Connection Block (1), long draw (6) and short rod (9), wherein the axial line of Connection Block (1) and base (2) axial line are on same straight line, and Connection Block (1) bottom is fixed by the first screw (3) of axially arranging and base (2) top; The upper end of described Connection Block (1) is followed successively by conical section and cylindrical section from top to bottom, wherein conical section is up-small and down-big, its tapering is 20 ° to 30 °, and being set with a positioning seat (4) at described cylindrical section, this positioning seat is fixedly connected with Connection Block (1) by the second screw (5) axially arranged; Described long draw (6) is followed successively by thread segment, large footpath section, path section and lower thread segment from top to bottom, upper thread segment and the large footpath section of this long draw are positioned at described Connection Block (1) outward, and being set with a cover plate (7) and expansion set (8) from top to bottom successively at the upper thread segment of long draw (6), its cover plate (7) is threaded with long draw (6); Described expansion set (8) centre bore is made up of the cylindrical hole section on top and the bellmouth section of bottom, wherein cylindrical hole section kink is on the upper thread segment of described long draw (6), and described bellmouth section contacts with the conical section of described Connection Block (1) upper end, and expansion set (8) circumferentially having one group of radial slot (8a), this radial slot runs through end face and the bottom surface of expansion set (8);
The path section of described long draw (6) is located in the centre bore of Connection Block (1), its lower thread segment reaches in the centre bore of described base (2), and this lower thread segment is coaxially connected with the top of described short rod (9), the external diameter on short rod (9) top is greater than the external diameter of its underpart, and the bottom of short rod (9) has external screw thread.
Before clamping power transmission shaft (i.e. workpiece (G)), be first fixed on the workbench of gear-hobbing machine by base (2), the external screw thread of short rod (9) bottom is coaxially connected with the pull bar oil cylinder of gear-hobbing machine.Time clamping workpiece (G), first workpiece (G) bottom is sleeved on described expansion set (8) outward, then the pull bar oil cylinder controlling gear-hobbing machine is drop-down, thus drive long draw (6) to move down, and then drive expansion set (8) distortion by cover plate (7), thus by the bottom swelling of workpiece (G) centre bore, finally workpiece (G) is located.After machining, the pull bar oil cylinder controlling gear-hobbing machine pushes up, thus drive on long draw (6) and move reset, and the large footpath length of tape on long draw (6) is moved on described expansion set (8) and moved reset, and recover distortion, to be taken off by workpiece (G).
Adopt above technical scheme, the present invention is the external tooth that positioning datum comes processing work (G) bottom with the bottom of workpiece (G) centre bore, instead of as before with the whole centre bore of workpiece (G) for positioning datum, so just make the accumulation precision of workpiece (G) centre bore cannot affect the machining accuracy of workpiece (G) external tooth, positioning precision again due to taper seat is very high, so just can ensure the machining accuracy of power transmission shaft upper end external tooth well, and workpiece loading and unloading of the present invention (G) is all very convenient, solve the defect of traditional processing mode well, be suitable for extensively promoting the use.
As optimal design, the upper end of described short rod (9) is circumferentially provided with radial limit turn trough (9a), the root of the first holding screw (10) stretches in this radial direction limit turn trough, and the head of the first holding screw (10) is arranged in the installing hole on described base (2).
Adopt above structure, the present invention just carries out limit by the first holding screw (10) to short rod (9) and turns.
In the present case, the path section of described long draw (6) has limit turn trough (6a), the root of the second holding screw (11) stretches in this limit turn trough, and the head of the second holding screw (11) is arranged in the installing hole on described Connection Block (1).
Adopt above structure, the present invention just carries out limit by the second holding screw (11) to long draw (6) and turns.
As preferably, described expansion set (8) circumferentially evenly has 4 radial slots (8a).
For the ease of connecting described Connection Block (1) and base (2), special envoy's Connection Block (1) bottom reaches the top of base (2) centre bore, the installation base (1a) of this Connection Block (1) bottom is fixed by 6 described first screws (3) and base (2) top, and these first screws (3) are uniformly distributed along the circumference of Connection Block (1).
For the ease of being arranged on the workbench of gear-hobbing machine by base (2), the bottom of base (2) is processed as Installing machine tool boss (2a) by spy, this Installing machine tool boss is circumferentially evenly equipped with 6 screw mounting holes.
Beneficial effect: the present invention is the external tooth that positioning datum comes processing work (G) bottom with the bottom of workpiece (G) centre bore, instead of as before with the whole centre bore of workpiece (G) for positioning datum, so just make the accumulation precision of workpiece (G) centre bore cannot affect the machining accuracy of workpiece (G) external tooth, positioning precision again due to taper seat is very high, so just can ensure the machining accuracy of power transmission shaft upper end external tooth well, and workpiece loading and unloading of the present invention (G) is all very convenient, solve the defect of traditional processing mode well, be suitable for extensively promoting the use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the outline drawing of expansion set 8 in Fig. 1;
Fig. 3 is the sectional view of Fig. 2.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figures 1 to 3, for processing a gear hobbing tooling for automatic transmission power transmission shaft, form primarily of Connection Block 1, base 2, first screw 3, positioning seat 4, second screw 5, long draw 6, cover plate 7, expansion set 8, short rod 9, first holding screw 10 and the second holding screw 11.Wherein, the axial line of described Connection Block 1 and base 2 axial line are on same straight line, and the first screw 3 by axially arranging bottom Connection Block 1 is fixed with base 2 top.In the present case, reach the top of base 2 centre bore bottom described Connection Block 1, the installation base 1a bottom this Connection Block 1 is fixed with base 2 top by 6 described first screws 3, and these first screws 3 are uniformly distributed along the circumference of Connection Block 1.In addition, the bottom of described base 2 is Installing machine tool boss 2a, and this Installing machine tool boss 2a is circumferentially evenly equipped with 6 screw mounting holes, and base 2 is by being located in screw in these 6 screw mounting holes and gear-hobbing machine is fixed.
The upper end of described Connection Block 1 is followed successively by conical section and cylindrical section from top to bottom, wherein conical section is up-small and down-big, its tapering is 20 ° to 30 °, and can more preferably 22 °, 25 °, 28 ° or 30 °, and being set with a positioning seat 4 at described cylindrical section, this positioning seat 4 is fixedly connected with Connection Block 1 by the second screw 5 axially arranged.
Described long draw 6 is followed successively by thread segment, large footpath section, path section and lower thread segment from top to bottom, the upper thread segment of this long draw 6 and large footpath section are positioned at outside described Connection Block 1, and being set with a cover plate 7 and expansion set 8 from top to bottom successively at the upper thread segment of long draw 6, its cover plate 7 is threaded with long draw 6.Described expansion set 8 centre bore is made up of the cylindrical hole section on top and the bellmouth section of bottom, wherein cylindrical hole section kink is on the upper thread segment of described long draw 6, and described bellmouth section contacts with the conical section of described Connection Block 1 upper end, and expansion set 8 circumferentially having one group of radial slot 8a, this radial slot runs through end face and the bottom surface of expansion set 8.As preferably, described expansion set 8 circumferentially evenly has 4 radial slot 8a.The path section of described long draw 6 has limit turn trough 6a, the root of the second holding screw 11 stretches in this limit turn trough, and the head of the second holding screw 11 is arranged in the installing hole on described Connection Block 1.
As shown in Figures 1 to 3, the path section of described long draw 6 is located in the centre bore of Connection Block 1, and its lower thread segment reaches in the centre bore of described base 2, and this lower thread segment is coaxially connected with the top of described short rod 9.The external diameter on described short rod 9 top is greater than the external diameter of its underpart, and the bottom of short rod 9 has external screw thread, and short rod 9 is connected with the pull bar oil cylinder on gear-hobbing machine by this external screw thread, thus can move down under the effect of pull bar oil cylinder.In addition, the upper end of described short rod 9 is circumferentially provided with radial limit turn trough 9a, and the root of the first holding screw 10 stretches in this radial direction limit turn trough 9a, and the head of the first holding screw 10 is arranged in the installing hole on described base 2.
The foregoing is only preferred embodiment of the present invention, is not restriction with the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. one kind for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: comprise Connection Block (1), long draw (6) and short rod (9), wherein the axial line of Connection Block (1) and base (2) axial line are on same straight line, and Connection Block (1) bottom is fixed by the first screw (3) of axially arranging and base (2) top; The upper end of described Connection Block (1) is followed successively by conical section and cylindrical section from top to bottom, wherein conical section is up-small and down-big, its tapering is 20 ° to 30 °, and being set with a positioning seat (4) at described cylindrical section, this positioning seat is fixedly connected with Connection Block (1) by the second screw (5) axially arranged; Described long draw (6) is followed successively by thread segment, large footpath section, path section and lower thread segment from top to bottom, upper thread segment and the large footpath section of this long draw are positioned at described Connection Block (1) outward, and being set with a cover plate (7) and expansion set (8) from top to bottom successively at the upper thread segment of long draw (6), its cover plate (7) is threaded with long draw (6); Described expansion set (8) centre bore is made up of the cylindrical hole section on top and the bellmouth section of bottom, wherein cylindrical hole section kink is on the upper thread segment of described long draw (6), and described bellmouth section contacts with the conical section of described Connection Block (1) upper end, and expansion set (8) circumferentially having one group of radial slot (8a), this radial slot runs through end face and the bottom surface of expansion set (8);
The path section of described long draw (6) is located in the centre bore of Connection Block (1), its lower thread segment reaches in the centre bore of described base (2), and this lower thread segment is coaxially connected with the top of described short rod (9), the external diameter on short rod (9) top is greater than the external diameter of its underpart, and the bottom of short rod (9) has external screw thread.
2. according to claim 1 for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: the upper end of described short rod (9) is circumferentially provided with radial limit turn trough (9a), the root of the first holding screw (10) stretches in this radial direction limit turn trough, and the head of the first holding screw (10) is arranged in the installing hole on described base (2).
3. according to claim 1 or 2 for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: the path section of described long draw (6) has limit turn trough (6a), the root of the second holding screw (11) stretches in this limit turn trough, and the head of the second holding screw (11) is arranged in the installing hole on described Connection Block (1).
4. according to claim 3 for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: described expansion set (8) circumferentially evenly has 4 radial slots (8a).
5. according to claim 1 for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: described Connection Block (1) bottom reaches the top of base (2) centre bore, the installation base (1a) of this Connection Block (1) bottom is fixed by 6 described first screws (3) and base (2) top, and these first screws (3) are uniformly distributed along the circumference of Connection Block (1).
6. according to claim 5 for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: the bottom of described base (2) is Installing machine tool boss (2a), this Installing machine tool boss is circumferentially evenly equipped with 6 screw mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585289.3A CN103639536B (en) | 2013-11-19 | 2013-11-19 | A kind of gear hobbing tooling for processing automatic transmission power transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585289.3A CN103639536B (en) | 2013-11-19 | 2013-11-19 | A kind of gear hobbing tooling for processing automatic transmission power transmission shaft |
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| Publication Number | Publication Date |
|---|---|
| CN103639536A CN103639536A (en) | 2014-03-19 |
| CN103639536B true CN103639536B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310585289.3A Active CN103639536B (en) | 2013-11-19 | 2013-11-19 | A kind of gear hobbing tooling for processing automatic transmission power transmission shaft |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215478A (en) * | 2015-11-19 | 2016-01-06 | 天津天海同步科技有限公司 | A kind of axle class gear-hobbing clamp |
| CN106903376A (en) * | 2017-03-31 | 2017-06-30 | 西安法士特汽车传动有限公司 | Gear-shaping clamp and its application method that a kind of fast quick change is produced |
| CN109834341A (en) * | 2019-03-18 | 2019-06-04 | 宝鸡法士特齿轮有限责任公司 | A kind of disc type gear flank profil chamfered edge fixture and its application method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09272033A (en) * | 1996-04-10 | 1997-10-21 | Nissan Motor Co Ltd | Workpiece holding device |
| US6186710B1 (en) * | 1997-01-09 | 2001-02-13 | Zexel Corporation | Method for rotationally driving gear material when hob machining is performed and gear |
| CN2749616Y (en) * | 2004-11-19 | 2006-01-04 | 上海交运汽车动力系统有限公司 | Gear hobbing clamp for clutch spindle |
| CN102554367A (en) * | 2011-12-27 | 2012-07-11 | 重庆机床(集团)有限责任公司 | Quick changing clamp for disc teeth and hobbing teeth |
| CN202461577U (en) * | 2012-01-15 | 2012-10-03 | 招远鲁鑫线轴有限公司 | Cylindrical turning fixture for thin-walled workpiece |
| CN202845959U (en) * | 2012-10-17 | 2013-04-03 | 重庆市星极齿轮有限责任公司 | Automobile transmission input shaft hobbing tool |
| CN103381513A (en) * | 2013-08-05 | 2013-11-06 | 天津天海同步科技股份有限公司 | Hobbing tool for shaft gear |
| CN203592200U (en) * | 2013-11-19 | 2014-05-14 | 重庆市星极齿轮有限责任公司 | Gear hob tool for machining automatic gearbox transmission shaft |
-
2013
- 2013-11-19 CN CN201310585289.3A patent/CN103639536B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09272033A (en) * | 1996-04-10 | 1997-10-21 | Nissan Motor Co Ltd | Workpiece holding device |
| US6186710B1 (en) * | 1997-01-09 | 2001-02-13 | Zexel Corporation | Method for rotationally driving gear material when hob machining is performed and gear |
| CN2749616Y (en) * | 2004-11-19 | 2006-01-04 | 上海交运汽车动力系统有限公司 | Gear hobbing clamp for clutch spindle |
| CN102554367A (en) * | 2011-12-27 | 2012-07-11 | 重庆机床(集团)有限责任公司 | Quick changing clamp for disc teeth and hobbing teeth |
| CN202461577U (en) * | 2012-01-15 | 2012-10-03 | 招远鲁鑫线轴有限公司 | Cylindrical turning fixture for thin-walled workpiece |
| CN202845959U (en) * | 2012-10-17 | 2013-04-03 | 重庆市星极齿轮有限责任公司 | Automobile transmission input shaft hobbing tool |
| CN103381513A (en) * | 2013-08-05 | 2013-11-06 | 天津天海同步科技股份有限公司 | Hobbing tool for shaft gear |
| CN203592200U (en) * | 2013-11-19 | 2014-05-14 | 重庆市星极齿轮有限责任公司 | Gear hob tool for machining automatic gearbox transmission shaft |
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| CN103639536A (en) | 2014-03-19 |
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