CN102303273A - Grinding processing method for small concave-surface concave flank cam shaft - Google Patents
Grinding processing method for small concave-surface concave flank cam shaft Download PDFInfo
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- CN102303273A CN102303273A CN201110315714A CN201110315714A CN102303273A CN 102303273 A CN102303273 A CN 102303273A CN 201110315714 A CN201110315714 A CN 201110315714A CN 201110315714 A CN201110315714 A CN 201110315714A CN 102303273 A CN102303273 A CN 102303273A
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Abstract
A grinding processing method for a small concave-surface concave flank cam shaft is capable of performing concave surface grinding on a cam shaft having a concave flank curvature radius ranging from 25 to 80 mm and performing accurate grinding of the whole cam cambered surface. A combined structure of large and small grinding wheels is adopted; two grinding wheels different in radius are used for processing the concave flank surface; the working positions of the large and small grinding wheels are interchanged through straight movement; the large grinding wheel is used for performing accurate grinding and semi-accurate grinding on the cam contour; and then the small grinding wheel is used for performing concave surface grinding and the accurate grinding of the whole cam cambered surface. The combined structure of large and small grinding wheels comprises a bed body, a grinding wheel feeding slide mounted on the bed body, and a head rack and a tail rack for clamping a cam shaft workpiece, wherein the grinding wheel feeding slide is driven by a numerical control sliding table; the large grinding wheel, a large grinding wheel driving motor and a small grinding wheel bracket are fixedly mounted on the grinding wheel feeding slide; a guide rail is mounted on the small grinding wheel bracket; the small grinding wheel, a small grinding wheel driving motor and a small grinding wheel slider are all mounted on a small grinding wheel sliding plate; and the small grinding wheel sliding plate is capable of sliding up and down along the guide rail under the driving of a linear brake.
Description
Affiliated technical field
The present invention relates to a kind of grinding processing method of little concave surface concave-belly camshaft, be particularly useful for the grinding of the little concave surface concave-belly camshaft of the radius of curvature 25～80mm of recessed abdomen place.
Background technology
Traditional engine cam shape face all is a spirogyrate; But along with the raising of engine power and to the raising demand of fuel utilization ratio; The camshaft of oil supply system adopts recessed abdomen cross sectional shape in a large number in the lift section; The camshaft of this recessed fu jie structure has pressure and sets up fast characteristics; Can prevent secondary fuel injection, thereby reduce oil consumption.
For the method for grinding and the device of concave-belly camshaft, at present technique known all adopts the revolving-turret structure, complex structure not only, and, can not satisfy the grinding accuracy requirement of little concave surface concave-belly camshaft because its rotation precision is very big to the grinding accuracy influence.In addition; Show according to interrelated data; In the concave-belly camshaft numerical control grinding lathe of German Xiao Te CF61-CBN1500 model; The recessed abdomen radius of minimum grinding is 80mm; But, in patent of publishing and documents and materials, do not appear in the newspapers at present for the method for grinding and the device of recessed abdomen radius less than the little concave surface concave-belly camshaft of 80mm.Therefore; For the concave-belly camshaft of radius of curvature less than the little concave shape face of 80mm; For reaching its numerical control accurate grinding machining accuracy; And guarantee little concave surface concave-belly camshaft high accuracy, high efficiency many kinds, mass process requirements, must design the little concave surface concave flank cam shaft abrasive machining method that makes new advances.
Summary of the invention
Little concave surface concave-belly camshaft (on same cam contour, existing profile radius of curvature be on the occasion of, it is the cam of negative value that profile radius of curvature are arranged again) sketch as shown in Figure 1.
For solving a little concave surface concave-belly camshaft Grinding Technology difficult problem, the present invention provides a kind of grinding processing method of little concave surface concave-belly camshaft, can carry out the correct grinding of concave surface grinding and whole cam curved surface to the camshaft of recessed abdomen radius of curvature 25～80mm.
The technical solution adopted for the present invention to solve the technical problems is: adopt big or small emery wheel combining structure; Use the emery wheel of two different radiis to process the recessed outside of belly; Exchange big or small emery wheel operating position through rectilinear motion; With big emery wheel cam-shaped line is finish grinded and half correct grinding, carry out the correct grinding of concave surface grinding and whole cam curved surface then with little emery wheel.It is characterized in that: this size emery wheel combining structure comprises lathe bed, is installed in the headstock and the tailstock that are used for clamping camshaft workpiece on the lathe bed and is installed in the emery wheel feeding slide on the lathe bed; On emery wheel feeding slide, be installed with big emery wheel, big emery wheel drive motors and little emery wheel bracket, emery wheel feeding slide is driven by nc sliding table; On little emery wheel bracket, guide rail is installed; Little emery wheel, little emery wheel drive motors and little emery wheel slide block are installed on the little emery wheel slide plate, and little emery wheel slide plate can slide up and down at the driving lower edge of linear brake guide rail.
The stiff end of linear brake is fixedly connected with little emery wheel bracket.The tache motorice of linear brake is connected with little emery wheel slide plate.Dog screw is installed on the little emery wheel bracket, and holding screw is installed on the little emery wheel bracket, and the tache motorice of linear brake can drive little emery wheel skateboarding to dog screw position end.The relative position of little emery wheel slide plate and little emery wheel bracket be can fix through locking holding screw, processing stability and required precision guaranteed.
Little emery wheel is a Φ 50mm emery wheel; Be fixedly connected with bevel pinion; Bevel pinion and large helical gear are meshing with each other; Large helical gear and little multiple ribbed pulley are fixedly connected; Little multiple ribbed pulley is with multiple ribbed pulley is through many wedges belt transferring rotational motion greatly, and big multiple ribbed pulley is installed on the output shaft of little emery wheel drive motors.Little emery wheel drive motors drives little multiple ribbed pulley rotation through big multiple ribbed pulley, and little multiple ribbed pulley and large helical gear together rotate, and large helical gear drives the bevel pinion rotation, and bevel pinion drives little emery wheel rotation.The helical gear transmission is impacted less, and bearing capacity is strong, has guaranteed that little wheel grinding adds the stable drive in man-hour.
Adopt technique scheme that little concave surface concave-belly camshaft is carried out numerical control grinding and add man-hour,, finish grind and the concave surface grinding with little emery wheel with big emery wheel corase grind and half correct grinding.There is a little emery wheel that can move up and down front upper place at big emery wheel; The little emery wheel that can drive on the little emery wheel slide plate through linear brake moves up and down; Little emery wheel was parked in the top when big emery wheel was worked; During the work of little emery wheel, linear brake drives little emery wheel slide plate and moves downward to little emery wheel operating position and locate.Big emery wheel and little emery wheel are driven by independent threephase asynchronous respectively, control the big or small emery wheel working time through nc program, realize little concave surface concave-belly camshaft processing, and avoid big or small emery wheel to interfere.
The invention has the beneficial effects as follows:
1, can realize the concave-belly camshaft of the little concave shape face of big or small emery wheel conversion grinding; The camshaft of radius of curvature 25～80mm particularly; Solved the process technology difficult problem of little concave shape face concave-belly camshaft; Reduce the processing cost of little concave shape face concave-belly camshaft, improved machining accuracy and production efficiency.
2, utilize the little emery wheel of Φ 50mm can solve the form accuracy and the surface accuracy of the grinding of little concave surface concave-belly camshaft.
Description of drawings
Fig. 1 is little concave shape face concave-belly camshaft sketch.
Fig. 2 is the double abrasive wheel structural representation of the embodiment of the invention.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the B-B cutaway view of Fig. 3.
Among the figure: 1. lathe bed, the 2. headstock, 3. camshaft workpiece, 4. tailstock; 5. emery wheel feeding slide, 6. nc sliding table, 7. big emery wheel, 8. big emery wheel drive motors; 9. little emery wheel bracket, 10. linear brake, 11. guide rails, 12. little emery wheel slide plates; 13. little emery wheel, 14. little emery wheel drive motors, 15. dog screws; 16. little emery wheel slide block, 17. holding screws, 18. bevel pinions; 19. large helical gear, 20. little multiple ribbed pulleys, 21. big multiple ribbed pulleys.
The specific embodiment
In Fig. 1, the radius of curvature of camshaft is 25～80mm, and the present invention adopts big or small emery wheel combining structure, with big emery wheel cam-shaped line is roughly ground and half correct grinding, carries out the correct grinding of concave surface grinding and whole cam curved surface then with little emery wheel.
In Fig. 2, Fig. 3, Fig. 4 and Fig. 5; Size emery wheel combining structure comprises lathe bed (1); Be installed in the headstock (2) and the tailstock (4) that are used for clamping camshaft workpiece (3) on the lathe bed (1); Be installed on the lathe bed (1) emery wheel feeding slide (5); It is characterized in that: on emery wheel feeding slide (5), be installed with big emery wheel (7), big emery wheel drive motors (8) and little emery wheel bracket (9), emery wheel feeding slide (5) is driven by nc sliding table (6); Guide rail (11) is installed on little emery wheel bracket (9); Little emery wheel (13), little emery wheel drive motors (14) and little emery wheel slide block (16) are installed on the little emery wheel slide plate (12), and little emery wheel slide plate (12) can slide up and down at the driving lower edge of linear brake (10) guide rail (11).
In Fig. 2, Fig. 3 and Fig. 4; Camshaft workpiece (3) is by the headstock (2) and the common clamping of tailstock (4); Adopt different big or small wheel grinding concave surface and the whole cam curved surfaces of radius; Little emery wheel bracket (9) is installed on the emery wheel feeding slide (5); Driving through linear brake (10); Little emery wheel slide plate (12) can drive little emery wheel (13) and little emery wheel drive motors (14) moves up and down along guide rail (11), makes the work of can automaticallying switch of big emery wheel (7) and little emery wheel (13), the grinding curved surface.When big emery wheel (7) was worked, little emery wheel (13) drove to move upward through linear brake (10) and leaves the operating position; During little emery wheel (13) work; Little emery wheel (13) drives through linear brake (10) and moves downward; Spacing through dog screw (15); Holding screw (17) is installed on the little emery wheel bracket (9); Can fix the relative position of little emery wheel slide plate (12) and little emery wheel bracket (9) through locking holding screw (17); Get into duty; When the size emery wheel interlocks work; Control the big or small emery wheel working time through numerical control program; Make big or small grinding wheel movement mutually noninterfere, thereby realized that big or small emery wheel replaces the grinding work to little concave surface concave-belly camshaft.
The kind of drive of little emery wheel: little emery wheel (13) is fixedly connected with bevel pinion (18); Bevel pinion (18) is meshing with each other with large helical gear (19); Large helical gear (19) is fixedly connected with little multiple ribbed pulley (20); Little multiple ribbed pulley (20) passes through the belt transferring rotational motion with big multiple ribbed pulley (21), and big multiple ribbed pulley (21) is fixedly connected with little emery wheel drive motors (14).Little emery wheel drive motors (14) drives little multiple ribbed pulley (20) through big multiple ribbed pulley (21) and rotates; Little multiple ribbed pulley (20) together rotates with large helical gear (19); Large helical gear (19) drives bevel pinion (18) rotation, and bevel pinion (18) drives little emery wheel (13) rotation.
Claims (3)
1 a small, concave recess belly camshaft grinding method, the radius of curvature of the concave belly camshaft 25 ~ 80mm, using the size of the wheel structure, and the use of two different radii grinding wheel concave belly, by the linear motion swap Size grinding working position, the cam with a large grinding wheel for rough grinding and semi-finish grinding line, and with a small concave grinding wheel grinding and fine grinding of the cam surface, characterized in that: the size of the composite structure comprises grinding bed (1 ), mounted on the bed (1) on the camshaft for clamping workpieces (3) of the headstock (2) and tailstock (4), and mounted on the bed (1) on the feed wheel carriage (5 ); the wheel feed slide (5) fixedly mounted on a large wheel (7), a large wheel drive motor (8) and the small wheel holder (9), the feed wheel carriage (5) by the numerical control slide (6 ) drive; the small wheel holder (9) is mounted on guide rails (11); small wheel (13), small wheel drive motor (14) and the small wheel slide (16) is mounted on small wheel slide (12), the small Wheel slide (12) of the brake line (10) is driven along the guide rail (11) slide up and down.
2. the grinding processing method of a kind of little concave surface concave-belly camshaft according to claim 1 is characterized in that: the stiff end of linear brake (10) is fixedly connected with little emery wheel bracket (9), and the tache motorice of linear brake (10) is connected with little emery wheel slide plate (12); Dog screw (15) is installed on the little emery wheel bracket (9), and holding screw (17) is installed on the little emery wheel bracket (9); The tache motorice of linear brake (10) can drive little emery wheel slide plate (12) and move to dog screw (15) position end; The relative position of little emery wheel slide plate (12) and little emery wheel bracket (9) be can fix through locking holding screw (17), processing stability and required precision guaranteed.
3. the grinding processing method of a kind of little concave surface concave-belly camshaft according to claim 1; It is characterized in that: little emery wheel (13) is a Φ 50mm emery wheel; Be fixedly connected with bevel pinion (18); Bevel pinion (18) is meshing with each other with large helical gear (19); Large helical gear (19) is fixedly connected with little multiple ribbed pulley (20); Little multiple ribbed pulley (20) is with multiple ribbed pulley (21) is through many wedges belt transferring rotational motion greatly, and big multiple ribbed pulley (21) is installed on the output shaft of little emery wheel drive motors (14); Little emery wheel drive motors (14) drives little multiple ribbed pulley (20) rotation through big multiple ribbed pulley (21), and little multiple ribbed pulley (20) together rotates with large helical gear (19), and large helical gear (19) drives bevel pinion (18) rotation; Bevel pinion (18) drives little emery wheel (13) rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315714A CN102303273A (en) | 2011-10-18 | 2011-10-18 | Grinding processing method for small concave-surface concave flank cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315714A CN102303273A (en) | 2011-10-18 | 2011-10-18 | Grinding processing method for small concave-surface concave flank cam shaft |
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| CN102303273A true CN102303273A (en) | 2012-01-04 |
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|---|---|---|---|
| CN201110315714A Pending CN102303273A (en) | 2011-10-18 | 2011-10-18 | Grinding processing method for small concave-surface concave flank cam shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875103A (en) * | 2015-06-17 | 2015-09-02 | 高金建 | Simple dust-proof polishing machine |
| CN106392858A (en) * | 2016-12-08 | 2017-02-15 | 宇晶机器（长沙）有限公司 | Multi-surface polishing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392566A (en) * | 1991-11-18 | 1995-02-28 | Fortuna-Werke Maschinenfabrik Gmbh | Process and device for numerically controlled grinding of cams of a camshaft |
| EP1732731A1 (en) * | 2004-03-17 | 2006-12-20 | Erwin Junker Maschinenfabrik GmbH | Method and device for grinding assembled camshafts with a high concentricity accuracy |
| CN101585162A (en) * | 2009-07-03 | 2009-11-25 | 湖南大学 | Numerically controlled grinder suitable for multi-station composite grinding of cam axle |
| CN101708587A (en) * | 2009-12-23 | 2010-05-19 | 长春设备工艺研究所 | Concave-belly camshaft precision processing technology and device |
-
2011
- 2011-10-18 CN CN201110315714A patent/CN102303273A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392566A (en) * | 1991-11-18 | 1995-02-28 | Fortuna-Werke Maschinenfabrik Gmbh | Process and device for numerically controlled grinding of cams of a camshaft |
| EP1732731A1 (en) * | 2004-03-17 | 2006-12-20 | Erwin Junker Maschinenfabrik GmbH | Method and device for grinding assembled camshafts with a high concentricity accuracy |
| CN101585162A (en) * | 2009-07-03 | 2009-11-25 | 湖南大学 | Numerically controlled grinder suitable for multi-station composite grinding of cam axle |
| CN101708587A (en) * | 2009-12-23 | 2010-05-19 | 长春设备工艺研究所 | Concave-belly camshaft precision processing technology and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875103A (en) * | 2015-06-17 | 2015-09-02 | 高金建 | Simple dust-proof polishing machine |
| CN106392858A (en) * | 2016-12-08 | 2017-02-15 | 宇晶机器（长沙）有限公司 | Multi-surface polishing machine |
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Application publication date: 20120104 |
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