CN102785095A - Positioning device for crankshaft hole and camshaft hole of motorcycle engine box body - Google Patents
Positioning device for crankshaft hole and camshaft hole of motorcycle engine box body Download PDFInfo
- Publication number
- CN102785095A CN102785095A CN2012102786113A CN201210278611A CN102785095A CN 102785095 A CN102785095 A CN 102785095A CN 2012102786113 A CN2012102786113 A CN 2012102786113A CN 201210278611 A CN201210278611 A CN 201210278611A CN 102785095 A CN102785095 A CN 102785095A
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- positioning sleeve
- hole
- crankshaft hole
- crankshaft
- motorcycle engine
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Abstract
The invention belongs to the manufacturing field of a motorcycle engine box body, in particular to a positioning device for a crankshaft hole and a camshaft hole of the motorcycle engine box body. The positioning device comprises a chuck, a taper positioning sleeve and a guide pillar, wherein the taper positioning sleeve is fixed on the chuck, the guide pillar is coaxial with the taper positioning sleeve and is in sliding fit with the taper positioning sleeve, and the other end of the taper positioning sleeve is connected with one end of a return spring, the other end of the return spring is connected with a flange. Therefore, when the positioning device is used for carrying out finish machining on a crankshaft hole, a position tolerance of the entire positioning device is definite, the position tolerance of the crankshaft hole of a work-piece is positioned by adopting the position tolerance of the positioning device as the benchmark, so that the high positioning precision of the crankshaft hole is guaranteed; and after the finish machining on the crankshaft is completed, the camshaft hole is machined by adopting the crankshaft hole and the surface for positioning, so that a purpose for adopting one-step clamping to complete twice machining can be realized, and the problems that an error of a repeated positioning influences a distance between the two holes, the variation of a center distance of a machined product exceeds the tolerance limit and the qualification rate is low in the past can be avoided.
Description
Technical field
The invention belongs to the motorcycle engine casing and make the field, relate in particular to the positioner of a kind of motorcycle engine casing crankshaft hole and camshaft hole.
Background technology
Crankshaft hole in the motorcycle engine box parts, camshaft hole etc. all are one of crucial processing contents, in engine, have important effect, and these hole in piece part must possess higher precision, otherwise directly have influence on performance, precision and the life-span of engine.
But in the processing of camshaft hole, crankshaft hole is at mould assembling face at the crankshaft hole of existing motorcycle engine casing, and camshaft hole overleaf; Earlier at mould assembling face fine finishining crankshaft hole, again with mould assembling face pin-and-hole and face location, the camshaft hole at the processing back side; Main existing problems: there is certain error dowel hole and crankshaft hole position, and the secondary clamping, resetting error effect two pitch-rows; Cause converted products centre-to-centre spacing to change and surpass tolerance, qualification rate is low.
Summary of the invention
The present invention provides the positioner of a kind of crankshaft hole and camshaft hole, when processing motorcycle casing, can improve the positioning accuracy of crankshaft hole and camshaft hole.
In order to solve the problems of the technologies described above; The present invention provides following technical scheme: the positioner of motorcycle engine casing crankshaft hole and camshaft hole comprises chuck, tapering positioning sleeve, lead; The tapering positioning sleeve is fixed on the chuck; Lead is slidingly matched with the coaxial setting of tapering positioning sleeve and with the tapering positioning sleeve, and the other end of tapering positioning sleeve connects an end of back-moving spring, the other end mounting flange of back-moving spring.
Adopt technique scheme, among the present invention, when the fine finishining crankshaft hole; Workpiece is inserted in the tapering positioning sleeve, because the tapering positioning sleeve is fixed on the chuck, lead is slidingly matched with the coaxial setting of tapering positioning sleeve and with the tapering positioning sleeve; The position of related features of whole like this positioner confirms, is the position of related features of the crankshaft hole of benchmark location workpiece with the position of related features of positioner, guaranteed the high position precision of crankshaft hole; After crankshaft hole fine finishining is accomplished, with crankshaft hole and face location machining cam axis hole, like this with a clamping; Reach the purpose of twice processing; Avoided in the past because resetting error effect two pitch-rows cause converted products centre-to-centre spacing to change and surpass tolerance, qualification rate is low; According to the degree of depth of crankshaft hole needs processing on the workpiece, the tensile elongation of regulating back-moving spring.
Further, described tapering positioning sleeve is decided to be 0 o～3o according to the process requirements of different workpiece with range of taper.
Further, the inside of described tapering positioning sleeve and lead is provided with alloy-layer, has strengthened the abrasion resistance of positioner, thereby improves the service life of positioner.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation:
Fig. 1 is the structural representation of the positioner of motorcycle engine casing crankshaft hole of the present invention and camshaft hole.
The specific embodiment
Embodiment 1:
As shown in Figure 1: the positioner of motorcycle engine casing crankshaft hole and camshaft hole comprises chuck 1, tapering positioning sleeve 2, lead; Tapering positioning sleeve 2 is fixed on the chuck 1; Lead 3 is slidingly matched with the 2 coaxial settings of tapering positioning sleeve and with tapering positioning sleeve 2; The other end of tapering positioning sleeve 2 connects an end of back-moving spring 4; The other end mounting flange 5 of back-moving spring 4, the range of taper of described tapering positioning sleeve 2 are 0.1o, and the inside of described tapering positioning sleeve 2 and lead 3 is provided with alloy-layer 6.
When the crankshaft hole of fine finishining motorcycle engine casing, after the workpiece after the roughing is inserted in tapering positioning sleeve 2 and clamps, because tapering positioning sleeve 2 is fixed on the chuck 1; Lead 3 is slidingly matched with the 2 coaxial settings of tapering positioning sleeve and with tapering positioning sleeve 2, and the position of related features of whole like this positioner confirms, is the position of related features of the crankshaft hole of benchmark location workpiece with the position of related features of positioner; Guaranteed the high position precision of crankshaft hole; After crankshaft hole fine finishining is accomplished, with crankshaft hole and face location machining cam axis hole, like this with a clamping; Reach the purpose of twice processing; Avoided in the past because resetting error effect two pitch-rows cause converted products centre-to-centre spacing to change and surpass tolerance, qualification rate is low.
Embodiment 2:
As shown in Figure 1: the positioner of motorcycle engine casing crankshaft hole and camshaft hole comprises chuck 1, tapering positioning sleeve 2, lead; Tapering positioning sleeve 2 is fixed on the chuck 1; Lead 3 is slidingly matched with the 2 coaxial settings of tapering positioning sleeve and with tapering positioning sleeve 2; The other end of tapering positioning sleeve 2 connects an end of back-moving spring 4; The other end mounting flange 5 of back-moving spring 4, the range of taper of described tapering positioning sleeve 2 are 3o, and the inside of described tapering positioning sleeve 2 and lead 3 is provided with alloy-layer 6.
When the crankshaft hole of fine finishining motorcycle engine casing, after the workpiece after the roughing is inserted in tapering positioning sleeve 2 and clamps, because tapering positioning sleeve 2 is fixed on the chuck 1; Lead 3 is slidingly matched with the 2 coaxial settings of tapering positioning sleeve and with tapering positioning sleeve 2, and the position of related features of whole like this positioner confirms, is the position of related features of the crankshaft hole of benchmark location workpiece with the position of related features of positioner; Guaranteed the high position precision of crankshaft hole; After crankshaft hole fine finishining is accomplished, with crankshaft hole and face location machining cam axis hole, like this with a clamping; Reach the purpose of twice processing; Avoided in the past because resetting error effect two pitch-rows cause converted products centre-to-centre spacing to change and surpass tolerance, qualification rate is low.
Embodiment 3:
As shown in Figure 1: the positioner of motorcycle engine casing crankshaft hole and camshaft hole comprises chuck 1, tapering positioning sleeve 2, lead; Tapering positioning sleeve 2 is fixed on the chuck 1; Lead 3 is slidingly matched with the 2 coaxial settings of tapering positioning sleeve and with tapering positioning sleeve 2; The other end of tapering positioning sleeve 2 connects an end of back-moving spring 4; The other end mounting flange 5 of back-moving spring 4, the range of taper of described tapering positioning sleeve 2 are 0.3o, and the inside of described tapering positioning sleeve 2 and lead 3 is provided with alloy-layer 6.
When the crankshaft hole of fine finishining motorcycle engine casing, after the workpiece after the roughing is inserted in tapering positioning sleeve 2 and clamps, because tapering positioning sleeve 2 is fixed on the chuck 1; Lead 3 is slidingly matched with the 2 coaxial settings of tapering positioning sleeve and with tapering positioning sleeve 2, and the position of related features of whole like this positioner confirms, is the position of related features of the crankshaft hole of benchmark location workpiece with the position of related features of positioner; Guaranteed the high position precision of crankshaft hole; After crankshaft hole fine finishining is accomplished, with crankshaft hole and face location machining cam axis hole, like this with a clamping; Reach the purpose of twice processing; Avoided in the past because resetting error effect two pitch-rows cause converted products centre-to-centre spacing to change and surpass tolerance, qualification rate is low.
Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (3)
1. the positioner of motorcycle engine casing crankshaft hole and camshaft hole; It is characterized in that: comprise chuck, tapering positioning sleeve, lead; The tapering positioning sleeve is fixed on the chuck; Lead is slidingly matched with the coaxial setting of tapering positioning sleeve and with the tapering positioning sleeve, and the other end of tapering positioning sleeve connects an end of back-moving spring, the other end mounting flange of back-moving spring.
2. the positioner of motorcycle engine casing crankshaft hole according to claim 1 and camshaft hole is characterized in that: the range of taper of described tapering positioning sleeve is 0 o～3o.
3. the positioner of motorcycle engine casing crankshaft hole according to claim 1 and camshaft hole is characterized in that: the inside of described tapering positioning sleeve and lead is provided with alloy-layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278611.3A CN102785095B (en) | 2012-08-08 | 2012-08-08 | The locating device of engine case of motorcycle crankshaft hole and camshaft hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278611.3A CN102785095B (en) | 2012-08-08 | 2012-08-08 | The locating device of engine case of motorcycle crankshaft hole and camshaft hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102785095A true CN102785095A (en) | 2012-11-21 |
| CN102785095B CN102785095B (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210278611.3A Active CN102785095B (en) | 2012-08-08 | 2012-08-08 | The locating device of engine case of motorcycle crankshaft hole and camshaft hole |
Country Status (1)
| Country | Link |
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| CN (1) | CN102785095B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201102144Y (en) * | 2007-11-23 | 2008-08-20 | 石家庄金刚内燃机零部件集团有限公司 | Novel adamantine holding clamper outside of boring |
| CN201214191Y (en) * | 2008-06-25 | 2009-04-01 | 无锡富瑞德精密机械有限公司 | Locating expansion mechanism |
| US20100072687A1 (en) * | 2006-10-06 | 2010-03-25 | Tomoyuki Shinkai | Jig and method for processing cylinder block |
| CN202101620U (en) * | 2011-05-26 | 2012-01-04 | 长城汽车股份有限公司 | Tension mechanism and quick tension positioning device used for crankshaft hole of automobile cylinder block and provided with tension mechanism |
| CN202207916U (en) * | 2011-08-24 | 2012-05-02 | 亿达日平机床有限公司 | Expanding pin device for positioning crankshaft holes and camshaft holes |
| CN202317716U (en) * | 2011-11-02 | 2012-07-11 | 邵阳神风动力制造有限责任公司 | Centering mechanism for machining part of cylinder body |
| CN202763497U (en) * | 2012-08-08 | 2013-03-06 | 重庆百吉四兴压铸有限公司 | Locating device of crankshaft hole and camshaft hole of motorcycle engine case body |
-
2012
- 2012-08-08 CN CN201210278611.3A patent/CN102785095B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100072687A1 (en) * | 2006-10-06 | 2010-03-25 | Tomoyuki Shinkai | Jig and method for processing cylinder block |
| CN201102144Y (en) * | 2007-11-23 | 2008-08-20 | 石家庄金刚内燃机零部件集团有限公司 | Novel adamantine holding clamper outside of boring |
| CN201214191Y (en) * | 2008-06-25 | 2009-04-01 | 无锡富瑞德精密机械有限公司 | Locating expansion mechanism |
| CN202101620U (en) * | 2011-05-26 | 2012-01-04 | 长城汽车股份有限公司 | Tension mechanism and quick tension positioning device used for crankshaft hole of automobile cylinder block and provided with tension mechanism |
| CN202207916U (en) * | 2011-08-24 | 2012-05-02 | 亿达日平机床有限公司 | Expanding pin device for positioning crankshaft holes and camshaft holes |
| CN202317716U (en) * | 2011-11-02 | 2012-07-11 | 邵阳神风动力制造有限责任公司 | Centering mechanism for machining part of cylinder body |
| CN202763497U (en) * | 2012-08-08 | 2013-03-06 | 重庆百吉四兴压铸有限公司 | Locating device of crankshaft hole and camshaft hole of motorcycle engine case body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102785095B (en) | 2016-06-15 |
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