CN203592200U - Gear hob tool for machining automatic gearbox transmission shaft - Google Patents
Gear hob tool for machining automatic gearbox transmission shaft Download PDFInfo
- Publication number
- CN203592200U CN203592200U CN201320735426.2U CN201320735426U CN203592200U CN 203592200 U CN203592200 U CN 203592200U CN 201320735426 U CN201320735426 U CN 201320735426U CN 203592200 U CN203592200 U CN 203592200U
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- China
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- section
- connection block
- transmission shaft
- base
- long draw
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- Withdrawn - After Issue
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Abstract
The utility model discloses a gear hob tool for machining an automatic gearbox transmission shaft. The bottom of a connection seat is fixedly connected with the top of a base, a conical section and a cylindrical section are sequentially arranged on the upper end portion of the connection seat from top to bottom, the cylindrical section is sleeved with a locating seat, a long pulling rod comprises an upper threaded section, a large-diameter section, a small-diameter section and a lower threaded section in sequence from top to bottom, and the upper threaded section of the long pulling rod is sleeved with a cover plate and an expansion sleeve. A center hole of the expansion sleeve is formed by an upper cylindrical hole section and a lower conical hole section, and the conical hole section is in contact with the conical section of the connection seat. The small-diameter section of the long pulling rod penetrates through the center hole of the connection seat, and the lower threaded section is connected with the upper portion of a short pulling rod in a coaxial mode. The lower end portion of the center hole of a workpiece is used as a locating reference to machine outer teeth on the lower end portion of the workpiece rather than the overall center hole of the workpiece in the prior art, so that accumulation precision of the center hole of the workpiece can not affect the machining precision of the outer teeth of the workpiece, and therefore the machining precision of the outer teeth on the upper end portion of the transmission shaft can be well guaranteed.
Description
Technical field
The utility model relates to a kind of gear hobbing tooling, specifically, relates in particular to a kind of for processing the gear hobbing tooling of 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, when the external tooth of processing power transmission shaft bottom, in the centre bore of power transmission shaft, wear a long mandrel, and the mode coordinating by hole axle is take the centre bore of power transmission shaft as positioning datum, processes 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 center transmission shaft hole is just difficult to be guaranteed like this, and existing technique is processed the external tooth of power transmission shaft bottom take this centre bore as positioning datum, so just easily the accumulated error of centre bore is reacted on external tooth, thereby make the external tooth bias processing, 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.
Utility model content
It is a kind of for processing the gear hobbing tooling of automatic transmission power transmission shaft that technical problem to be solved in the utility model is to provide, and wish guarantees the machining accuracy of power transmission shaft upper end external tooth, and improves clamping efficiency.
The technical solution of the utility model is as follows: a kind of 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 be on same straight line, and Connection Block (1) bottom is fixed by the first screw (3) and base (2) top that axially arrange; 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 arranging; 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 and large footpath section are positioned at outside described Connection Block (1), and being set with successively from top to bottom a cover plate (7) and expansion set (8) 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) is upper along circumferentially having one group of radial slot (8a), and 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.
Clamping power transmission shaft (being workpiece (G)) before, is first fixed on base (2) on the workbench of gear-hobbing machine, and the external screw thread of short rod (9) bottom is coaxially connected with the pull bar oil cylinder of gear-hobbing machine.When clamping workpiece (G), first workpiece (G) bottom is sleeved on outside described expansion set (8), then the pull bar oil cylinder of controlling gear-hobbing machine is drop-down, thereby drive long draw (6) to move down, and then drive expansion set (8) distortion by cover plate (7), thereby by the bottom swelling of workpiece (G) centre bore, finally workpiece (G) is located.After machining, control on the pull bar oil cylinder of gear-hobbing machine and push up, move reset thereby drive on long draw (6), and large footpath section on long draw (6) drives on described expansion set (8) and move reset, and recover distortion, to workpiece (G) is taken off.
Adopt above technical scheme, the utility model carrys out the external tooth of processing work (G) bottom as positioning datum take the bottom of workpiece (G) centre bore, rather than as before take the whole centre bore of workpiece (G) as positioning datum, so just make the accumulation precision of workpiece (G) centre bore cannot affect the machining accuracy of workpiece (G) external tooth, again because the positioning precision of taper seat is very high, so just can guarantee well the machining accuracy of power transmission shaft upper end external tooth, and the utility model workpiece loading and unloading (G) is all very convenient, solve well the defect of traditional processing mode, be suitable for extensively promoting the use.
As optimal design, turn trough (9a) is radially limit along being circumferentially with in the upper end of described short rod (9), the root of the first holding screw (10) stretches into this and radially limits in 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 utility model just can be limit and turn short rod (9) by the first holding screw (10).
In this case, in the path section of described long draw (6), have 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 utility model just can be limit and turn long draw (6) by the second holding screw (11).
As preferably, described expansion set (8) is upper along circumferentially evenly having 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 the first screws (3) and base (2) top, these the first screws (3) being circumferentially uniformly distributed along Connection Block (1).
For the ease of base (2) is arranged on the workbench of gear-hobbing machine, the bottom of base (2) is processed as Installing machine tool boss (2a) by spy, and on this Installing machine tool boss, edge is circumferentially evenly equipped with 6 screw mounting holes.
Beneficial effect: the utility model carrys out the external tooth of processing work (G) bottom as positioning datum take the bottom of workpiece (G) centre bore, rather than as before take the whole centre bore of workpiece (G) as positioning datum, so just make the accumulation precision of workpiece (G) centre bore cannot affect the machining accuracy of workpiece (G) external tooth, again because the positioning precision of taper seat is very high, so just can guarantee well the machining accuracy of power transmission shaft upper end external tooth, and the utility model workpiece loading and unloading (G) is all very convenient, solve well the defect of traditional processing mode, be suitable for extensively promoting the use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the outline drawing of expansion set 8 in Fig. 1;
Fig. 3 is the cutaway view of Fig. 2.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figures 1 to 3, for processing a gear hobbing tooling for automatic transmission power transmission shaft, mainly formed by Connection Block 1, base 2, the first screw 3, positioning seat 4, the second screw 5, long draw 6, cover plate 7, expansion set 8, short rod 9, the first holding screw 10 and the second holding screw 11.Wherein, the axial line of described Connection Block 1 and base 2 axial lines are on same straight line, and Connection Block 1 bottom is fixed with base 2 tops by the first screw 3 of axial setting.In this case, described Connection Block 1 bottom reaches the top of base 2 centre bores, and the installation base 1a of this Connection Block 1 bottom fixes with base 2 tops by 6 described the first screws 3, these the first screws 3 being circumferentially uniformly distributed along 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 upper along being circumferentially evenly equipped with 6 screw mounting holes, and base 2 can be fixed by the screw and the gear-hobbing machine that are located in these 6 screw mounting holes.
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 be 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 of axial setting.
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 successively from top to bottom a cover plate 7 and expansion set 8 at the upper thread segment of long draw 6, its cover plate 7 is threaded with long draw 6.Described expansion set 8 centre bores are 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 on expansion set 8,, along 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, on described expansion set 8 along circumferentially evenly having 4 radial slot 8a.In the path section of described long draw 6, have 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 tops 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, thereby can under the effect of pull bar oil cylinder, move down.In addition, turn trough 9a is radially limit along being circumferentially with in the upper end of described short rod 9, and the root of the first holding screw 10 stretches into this and radially limits in 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 utility model; not take the utility model as restriction; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
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 be on same straight line, and Connection Block (1) bottom is fixed by the first screw (3) and base (2) top that axially arrange; 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 arranging; 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 and large footpath section are positioned at outside described Connection Block (1), and being set with successively from top to bottom a cover plate (7) and expansion set (8) 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) is upper along circumferentially having one group of radial slot (8a), and 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: turn trough (9a) is radially limit along being circumferentially with in the upper end of described short rod (9), the root of the first holding screw (10) stretches into this and radially limits in turn trough, and the head of the first holding screw (10) is arranged in the installing hole on described base (2).
According to described in claim 1 or 2 for processing the gear hobbing tooling of automatic transmission power transmission shaft, it is characterized in that: in the path section of described long draw (6), have 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) is upper along circumferentially evenly having 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 the first screws (3) and base (2) top, these the first screws (3) being circumferentially uniformly distributed along 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), on this Installing machine tool boss, edge is circumferentially evenly equipped with 6 screw mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735426.2U CN203592200U (en) | 2013-11-19 | 2013-11-19 | Gear hob tool for machining automatic gearbox transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735426.2U CN203592200U (en) | 2013-11-19 | 2013-11-19 | Gear hob tool for machining automatic gearbox transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203592200U true CN203592200U (en) | 2014-05-14 |
Family
ID=50673147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320735426.2U Withdrawn - After Issue CN203592200U (en) | 2013-11-19 | 2013-11-19 | Gear hob tool for machining automatic gearbox transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203592200U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639536A (en) * | 2013-11-19 | 2014-03-19 | 重庆市星极齿轮有限责任公司 | Hobbing tool for machining transmission shaft of automatic transmission |
| CN106424971A (en) * | 2016-12-16 | 2017-02-22 | 湖南南方宇航高精传动有限公司 | Quick positioning clamp for hobbing hollow shaft part |
-
2013
- 2013-11-19 CN CN201320735426.2U patent/CN203592200U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639536A (en) * | 2013-11-19 | 2014-03-19 | 重庆市星极齿轮有限责任公司 | Hobbing tool for machining transmission shaft of automatic transmission |
| CN103639536B (en) * | 2013-11-19 | 2015-11-18 | 重庆市星极齿轮有限责任公司 | A kind of gear hobbing tooling for processing automatic transmission power transmission shaft |
| CN106424971A (en) * | 2016-12-16 | 2017-02-22 | 湖南南方宇航高精传动有限公司 | Quick positioning clamp for hobbing hollow shaft part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |