CN101786245A - Double-top cutting jig in automobile brake camshaft double-top cutting process - Google Patents
Double-top cutting jig in automobile brake camshaft double-top cutting process Download PDFInfo
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- CN101786245A CN101786245A CN 201010137847 CN201010137847A CN101786245A CN 101786245 A CN101786245 A CN 101786245A CN 201010137847 CN201010137847 CN 201010137847 CN 201010137847 A CN201010137847 A CN 201010137847A CN 101786245 A CN101786245 A CN 101786245A
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- thimble
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Abstract
The invention relates to a double-top cutting jig in an automobile brake camshaft double-top cutting process, which comprises a base, thimble holders and a numerically-controlled dividing head, and the innovation point is that the two ends of the base are respectively provided with a left thimble holder and a right thimble holder, the left thimble holder is provided with a fixed thimble, the right thimble holder is provided with a mobile pressed thimble corresponding to the fixed thimble, the mobile pressed thimble is in thread fit with the right thimble holder, the tail end of the mobile pressed thimble is connected with a hand wheel, and the thimble numerically-controlled dividing head is arranged between the two thimble holders. In the invention, the camshaft is placed between the fixed thimble and the mobile pressed thimble, the hand wheel is rotated, the mobile pressed thimble and the fixed thimble end part are propped against the center holes of the camshaft, the connecting line of the two center holes is the processing benchmark, in the processing steps of the camshaft, the center holes of the two end surfaces of the camshaft are taken as the processing benchmark to carry out the milling, by adopting the same processing benchmark, the accumulated errors can be reduced, and out-of-tolerance scrap rate of products can be reduced.
Description
Technical field
The present invention relates to a kind of frock clamp, particularly a kind of Double Tops point cutting jig that is used for brake cam of automobile axle Double Tops point Cutting Process.
Background technology
At present, in the Pneumatic braking system of most of domestic automobile and the external automobile of part, all adopt the wheel drag of cam actuated, and the automotive brake camshaft during fabrication, make finished product from the cam shaft blank that forges, need carry out that the camshaft facing cut is flat, cylindrical finish turning, the involute contour milling of head part S type and spline mill processing.In traditional Cutting Process, the cylindrical of camshaft and spline processing are machining benchmark with the centre bore on the both ends of the surface all, and big end S type involute contour milling to adopt accurate scroll chuck on the professional CNC milling machine to clamp camshaft stalk portion external diameter be the camshaft cylindrical, input involute machining prgraming, imitate the type machining then, it exists shortcoming to be: adopt claw to clamp camshaft, having changed preceding working procedure is the machining benchmark of benchmark with the camshaft axis, in case change machining benchmark, it is overproof to cause processed workpiece to beat, product rejection rate is higher, has wasted multiple resource, has increased the weight of production cost.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of Double Tops point cutting jig that is used for brake cam of automobile axle Double Tops point Cutting Process, can guarantee the machining benchmark of camshaft milling, reduces cumulative errors.
For solving the problems of the technologies described above, technical scheme of the present invention is: the Double Tops point cutting jig in a kind of brake cam of automobile axle Double Tops point Cutting Process, comprise base, thimble holder and NC dividing head, its innovative point is: the two ends of described base are respectively equipped with left and right thimble holder, left side thimble holder is provided with fixedly thimble, the activity that right thimble holder is provided with fixedly thimble is corresponding compresses thimble, described activity compresses thimble and right thimble holder threaded engagement, its end is connected with handwheel, and the thimble NC dividing head is located between the two thimble holders.
The invention has the advantages that: being placed on camshaft fixedly, thimble and activity compress between the thimble, rotation hand wheel, activity compress thimble and fixedly the thimble end prop up the centre bore of camshaft, the line of this two centre bore is a machining benchmark, in all processing steps to camshaft, all the centre bore with the camshaft both ends of the surface is that machining benchmark cuts, and has adopted same machining benchmark, reduce the accumulated error of each operation, reduced product rejection rate.
Description of drawings
Accompanying drawing is the structural representation of Double Tops pin cutting jig in the brake cam of automobile axle Double Tops point Cutting Process of the present invention.
The specific embodiment
Brake cam of automobile axle Double Tops point Cutting Process step is as follows:
First step end face milling centering, with length overall 200-800mm end is that the forging cam shaft blank of S type involute contour is placed on the end face milling drill centers unit mahine, the rotating speed of lathe is made as 400 rev/mins, two end faces of milling cam shaft blank, cam shaft blank length overall behind the milling end face can be between 200-800mm, and bores the centre bore of Φ 4 on both ends of the surface;
The second step car camshaft cylindrical, Double Tops pin cutting jig is fixed on the operating position of numerically controlled lathe, the camshaft two ends are by Double Tops pin cutting jig clamping, described Double Tops pin cutting jig as shown in drawings, comprise base 1, left side thimble holder 2, right thimble holder 3 and NC dividing head 4, left side thimble holder 2 and right thimble holder 3 are located at the two ends of base 1 respectively, left side thimble holder 2 is provided with fixedly thimble 5, the right thimble holder 3 of the other end is provided with activity and compresses thimble 6, activity compresses thimble 6 and right thimble holder 3 threaded engagement, its end is equipped with handwheel 7, NC dividing head 4 is located at two thimble holders 2, between 3, rotation hand wheel 7, activity compresses thimble 6 reaches, make that fixedly thimble 5 compresses the centre bore that thimble 6 props up the camshaft both ends of the surface respectively with activity, NC dividing head 4 drives the camshaft rotation, 800 rev/mins of spindle of numerical control lathe rotating speeds, the amount of going to 300mm/ branch, carry out rough turn camshaft cylindrical, adjust 600 rev/mins of the speeds of mainshaft then, the amount of going to 150mm/ branch carries out finish turning;
The 3rd step was milled end S type involute contour, and the centre bore that continues with the camshaft both ends of the surface is a benchmark, and camshaft is by Double Tops pin cutting jig clamping, adjusting the speed of mainshaft then is 375 rev/mins, carry out camshaft head part S type involute contour and rough mill, during finish-milling, the speed of mainshaft is adjusted to 474 rev/mins;
The 4th step was a benchmark with the centre bore of camshaft both ends of the surface, and camshaft carries out the milling of spline by Double Tops pin cutting jig clamping, finished the machined cutting of camshaft.
Claims (1)
1. the Double Tops point cutting jig in the brake cam of automobile axle Double Tops point Cutting Process, comprise base, thimble holder and NC dividing head, it is characterized in that: the two ends of described base are respectively equipped with left and right thimble holder, left side thimble holder is provided with fixedly thimble, the activity that right thimble holder is provided with fixedly thimble is corresponding compresses thimble, described activity compresses thimble and right thimble holder threaded engagement, its end is connected with handwheel, and the thimble NC dividing head is located between the two thimble holders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010137847 CN101786245A (en) | 2010-04-02 | 2010-04-02 | Double-top cutting jig in automobile brake camshaft double-top cutting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010137847 CN101786245A (en) | 2010-04-02 | 2010-04-02 | Double-top cutting jig in automobile brake camshaft double-top cutting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101786245A true CN101786245A (en) | 2010-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010137847 Pending CN101786245A (en) | 2010-04-02 | 2010-04-02 | Double-top cutting jig in automobile brake camshaft double-top cutting process |
Country Status (1)
| Country | Link |
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| CN (1) | CN101786245A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780641A (en) * | 2010-04-02 | 2010-07-21 | 江苏汤臣汽车零部件有限公司 | Automobile brake camshaft double-center cutting process and double-center cutting clamp thereof |
| CN102233530A (en) * | 2011-05-09 | 2011-11-09 | 南车戚墅堰机车有限公司 | Indexing device of edge grinder of split shaft |
| CN102886693A (en) * | 2012-09-26 | 2013-01-23 | 溧阳市瑞丰金属制品有限公司 | Dividing fixture for 45-DEG positioning of valve core |
| CN103203489A (en) * | 2013-03-29 | 2013-07-17 | 哈尔滨汽轮机厂有限责任公司 | Device and method for processing GHQ combined cycle unit guide vanes |
| CN109108819A (en) * | 2018-08-14 | 2019-01-01 | 全椒县源峰锻造有限公司 | A kind of fixed device of camshaft polishing that segmentation is fixed |
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| CN2756381Y (en) * | 2004-11-19 | 2006-02-08 | 重庆建设摩托车股份有限公司 | Five groove grinding clamp for vehicle air conditioner rotor |
| CN101003099A (en) * | 2007-01-29 | 2007-07-25 | 陶波 | Feeding mechanism of gear making machine |
| CN200957504Y (en) * | 2006-07-25 | 2007-10-10 | 万向钱潮股份有限公司 | Work clamp for machining screw thread |
| CN201030488Y (en) * | 2007-05-27 | 2008-03-05 | 荆州恒隆汽车零部件制造有限公司 | Clamp for processing spacing angle plane |
| CN201211617Y (en) * | 2008-05-19 | 2009-03-25 | 安徽祝成动力机械有限公司 | Multi-purpose fixture clamper for piston oil hole processing |
| CN201685107U (en) * | 2010-04-02 | 2010-12-29 | 江苏汤臣汽车零部件有限公司 | Double-center cutting jig used in double-center cutting process of automobile brake camshaft |
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2010
- 2010-04-02 CN CN 201010137847 patent/CN101786245A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756381Y (en) * | 2004-11-19 | 2006-02-08 | 重庆建设摩托车股份有限公司 | Five groove grinding clamp for vehicle air conditioner rotor |
| CN200957504Y (en) * | 2006-07-25 | 2007-10-10 | 万向钱潮股份有限公司 | Work clamp for machining screw thread |
| CN101003099A (en) * | 2007-01-29 | 2007-07-25 | 陶波 | Feeding mechanism of gear making machine |
| CN201030488Y (en) * | 2007-05-27 | 2008-03-05 | 荆州恒隆汽车零部件制造有限公司 | Clamp for processing spacing angle plane |
| CN201211617Y (en) * | 2008-05-19 | 2009-03-25 | 安徽祝成动力机械有限公司 | Multi-purpose fixture clamper for piston oil hole processing |
| CN201685107U (en) * | 2010-04-02 | 2010-12-29 | 江苏汤臣汽车零部件有限公司 | Double-center cutting jig used in double-center cutting process of automobile brake camshaft |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780641A (en) * | 2010-04-02 | 2010-07-21 | 江苏汤臣汽车零部件有限公司 | Automobile brake camshaft double-center cutting process and double-center cutting clamp thereof |
| CN102233530A (en) * | 2011-05-09 | 2011-11-09 | 南车戚墅堰机车有限公司 | Indexing device of edge grinder of split shaft |
| CN102886693A (en) * | 2012-09-26 | 2013-01-23 | 溧阳市瑞丰金属制品有限公司 | Dividing fixture for 45-DEG positioning of valve core |
| CN103203489A (en) * | 2013-03-29 | 2013-07-17 | 哈尔滨汽轮机厂有限责任公司 | Device and method for processing GHQ combined cycle unit guide vanes |
| CN103203489B (en) * | 2013-03-29 | 2015-07-15 | 哈尔滨汽轮机厂有限责任公司 | Device and method for processing GHQ combined cycle unit guide vanes |
| CN109108819A (en) * | 2018-08-14 | 2019-01-01 | 全椒县源峰锻造有限公司 | A kind of fixed device of camshaft polishing that segmentation is fixed |
| CN109108819B (en) * | 2018-08-14 | 2020-09-01 | 全椒县源峰锻造有限公司 | Fixed fixing device is used in camshaft polishing of segmentation |
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Open date: 20100728 |