CN103042454B - Camshaft numerical control sander bed - Google Patents
Camshaft numerical control sander bed Download PDFInfo
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- CN103042454B CN103042454B CN201210556049.6A CN201210556049A CN103042454B CN 103042454 B CN103042454 B CN 103042454B CN 201210556049 A CN201210556049 A CN 201210556049A CN 103042454 B CN103042454 B CN 103042454B
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- camshaft
- slide unit
- numerical control
- grinding wheel
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Abstract
The invention discloses a kind of camshaft numerical control sander bed, comprise lathe bed, working plate, abrasive grinding wheel, headstock mechanism, bistrique assembly, tailstock system, rotate servomotor, longitudinally large slide unit, axial servomotor, compliant mechanism, feed servo motor, numerical control device, described lathe bed is provided with working plate, described working plate is provided with slide unit, described working plate is provided with T-slot makes tailstock system move axially along camshaft direction, tailstock system rear end is provided with single-acting cylinder, working plate rear is provided with longitudinally large slide unit, longitudinally large slide unit does axially-movable by axial driven by servomotor, longitudinally large slide unit is provided with compliant mechanism, described headstock mechanism is connected with rotation servomotor, described compliant mechanism connects feed servo motor, described abrasive grinding wheel connects bistrique assembly, numerical control device is connected to lathe bed.Present invention achieves the burr grinding that multiple camshaft completes each cam place blank surface continuously automatically.
Description
Technical field
The present invention relates to a kind of extraordinary camshaft processing numerical control sander bed, especially relate to the camshaft numerical control sander bed that machining cam axle neighboring edge criticizes peak burr.
Background technology
Camshaft special machine tool is the special purpose machine tool of internal combustion engine manufacturing.At present, between camshaft neighboring edge burr and upper and lower mould, the processing at batch peak all relies on manual processing, there is no the complete set of equipments of this procedure processing.In the process of artificial, camshaft surface spikes polishes off by the feel that must rely on people, and machined surface can not ensure to seamlessly transit.Operative employee is easily tired, produces personal injury, and safety can not ensure, efficiency is low, and the grinding wheel of consumption is too many, and dust is serious, and contaminated environment and injury operative employee health, product quality uniformity is poor, and percent defective is high.
Summary of the invention
Goal of the invention: the object of the invention is to make up the deficiencies in the prior art, provide a kind of safety operation, accuracy rate is high, and the camshaft numerical control sander bed of increasing work efficiency.
Technical scheme: a kind of camshaft numerical control sander bed, comprise lathe bed, working plate, abrasive grinding wheel, headstock mechanism, bistrique assembly, tailstock system, rotate servomotor, longitudinally large slide unit, axial servomotor, compliant mechanism, feed servo motor, numerical control device, described lathe bed is provided with working plate, described working plate is provided with slide unit, described working plate is provided with T-slot makes tailstock system move axially along camshaft direction, tailstock system rear end is provided with single-acting cylinder, working plate rear is provided with longitudinally large slide unit, longitudinally large slide unit does axially-movable by axial driven by servomotor, longitudinally large slide unit is provided with compliant mechanism, described headstock mechanism is connected with rotation servomotor, described compliant mechanism connects feed servo motor, described abrasive grinding wheel connects bistrique assembly, described numerical control device is connected to lathe bed.
Longitudinally connected by two extension springs between slide unit and compliant mechanism greatly.
Floor push is provided with below described lathe bed.
Described working plate and the intersection of lathe bed are provided with and start instruction for numerical control device thus start the starting switch that whole lathe completes cyclic process process.
Described abrasive grinding wheel is located at the left side of compliant mechanism.
Beneficial effect: after present invention employs such structure, grinding machine of the present invention is controlled by numerical control, achieves multiple cam surface and completes grinding continuously and automatically.Especially in Continuous maching, by means of the cooperation that mechanical flexibility structure and numerical control control, ensure that process convexity wheel shaft is subject to the pliable pressure of skive all the time, change and originally relied on the manufacturing procedure manually completed completely, achieve full-automatic Continuous maching.Maintain the uniformity of technological parameter in process, ensure and improve crudy, drastically increasing operating efficiency, saved consumptive material, decreased production cost.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is the top view of accompanying drawing 1;
Accompanying drawing 3 is feed servo motor torque and grinding wheel pressure dependence schematic diagram in the present invention.
Detailed description of the invention
The course of work of camshaft numerical control sander bed of the present invention is as follows:
A kind of camshaft numerical control sander bed, comprise lathe bed 5, working plate 6, abrasive grinding wheel 7, headstock mechanism 1, bistrique assembly 3, tailstock system 14, rotate servomotor 8, longitudinally large slide unit 2, axial servomotor 9, compliant mechanism 4, feed servo motor 10, numerical control device 11, lathe bed 5 is provided with working plate 6, working plate 6 is provided with slide unit 18, working plate 6 is provided with T-slot makes tailstock system 14 move axially along camshaft 16 direction, tailstock system 14 rear end is provided with single-acting cylinder 15, use during camshaft 16 loading and unloading, working plate 6 rear is provided with longitudinally large slide unit 2, longitudinally large slide unit 2 is driven by axial servomotor 9 and does axially-movable, longitudinally large slide unit 2 is provided with compliant mechanism 4, headstock mechanism 1 is connected with and rotates servomotor 8, compliant mechanism 4 connects feed servo motor 10, compliant mechanism 4 is by feed servo motor driven ball screw mandrel, abrasive grinding wheel 7 connects bistrique assembly 3, bistrique assembly 3 makes abrasive grinding wheel 7 rotate, produce cutting force, numerical control device 11 is connected to lathe bed 5, longitudinally connected by two extension springs 17 between slide unit 2 and compliant mechanism 4 greatly, abrasive grinding wheel 7 contacts with camshaft 16, two springs 17 be provided with by upper slide unit again produce flexibility, ensure that abrasive grinding wheel 7 and camshaft 16 organically combine and remove camshaft surface spikes, floor push 13 is provided with below lathe bed 5, working plate 6 and the intersection of lathe bed 5 are provided with and start instruction for digital control system 11 thus start the starting switch 12 that whole lathe completes cyclic process process, add and be used for man-hour normally opening and always stopping, abrasive grinding wheel 7 is located at the left side of compliant mechanism 4.In the present embodiment, abrasive grinding wheel 7 is skive.
Operation principle: a upper offset cam axle 16, after machining.Longitudinally large slide unit 2 is in lathe farthest right position.Compliant mechanism 4 is in lathe rearmost position, at this moment manually steps on floor push 13, is lifted down by the camshaft 16 processed, and changes another offset cam axle 16 unprocessed.Starting switch 12, after startup:
1st step: abrasive grinding wheel 7 starts to rotate under bistrique assembly 3 acts on, and feed servo motor 10 drives compliant mechanism 4 to contact camshaft 16 with abrasive grinding wheel 7, until receive pressure appropriate signals.
2nd step: axial servomotor 9 drives longitudinally large slide unit 2 (compliant mechanism 4 and abrasive grinding wheel 7 together with top) to move from right to left.Now abrasive grinding wheel 7 completes first deburring process on camshaft 16.
3rd step: feed servo motor 10 drives whole compliant mechanism 4 to leave camshaft 16, returns initial point.Rotate servomotor 8 and drive the main axis 180 ° be arranged in headstock mechanism 1.Start the processing of second batch of peak burr.
4th step: feed servo motor 10 drives whole compliant mechanism 4 to contact camshaft 16, axial servomotor 9 drives longitudinally large slide unit 2 (compliant mechanism 4 and abrasive grinding wheel 7 together with top) to move from left to right, and now abrasive grinding wheel 7 completes second batch of peak deburring process on camshaft 16.
5th step: after completing second batch of peak deburring, longitudinally large slide unit 2 is parked in initial point (the right), and whole compliant mechanism 4 returns initial point (back) under feed servo motor 10 drives.Abrasive grinding wheel 7 stops operating under bistrique assembly 3 acts on, and rotates servomotor 8 and drives the main shaft in headstock mechanism 1 to forward 0 point (first surface) to.At this moment on numerical control device, system 11 all gets back to zero-bit, waits for next loop start.
Manually the camshaft 16 processed is taken off, load onto camshaft 16 to be processed, repeat 1-5 step.
In the 1st and the 4th step, in order to ensure on camshaft that batch peak burr can be beaten totally, grinding spindle and grinding wheel service life can be extended again.
The technical scheme that the present invention proposes is: adopt flexible processing method, ensures that camshaft can receive enough pressure.Reduce rail friction resistance, stage clip elastic force is at any time with kind adjustable.The control model of feed servo motor is set to torque control model simultaneously, arranges a torque limit value Tt, as actual torque Ta ﹤ Tt, motor rotates forward and presses forward, and as Ta ﹥ Tt, motor reversal is drawn back pressure, works as Ta=Tt, motor stalling.Send pressure simultaneously and reach limited signal (i.e. pressure appropriate signals).Longitudinally large slide unit left direction is moved, and normal process is to headstock place, and divided by outside upper electrical control, mechanical aspects guarantees pressure relative constancy by compliant mechanism.Coordinating like this by frame for movement and electrical control, solve the problem of inconsistency existed in manual processing.
The further problem illustrated that needs is, what need to keep is the pressure be added on camshaft, and direct torque mode controls is that motor has constant torque, and the torque of mandatory declaration feeding motor and camshaft are subject to grinding wheel pressure is for this reason dull corresponding relation.What adopt due to grinding wheel and feeding motor is ball-screw syndeton, shown in Fig. 3, comprise feed screw 19, ball nut 20, driving torque Tt21, axial compressive force Ea22, by related data [Wang Zhimin, Zhang Xizhong, Li Yong. ball-screw-transmission uses and development [J]. electromechanical engineering technology, 2004, (9)] pass of driving torque Te and axial compressive force Ea is in known Fig. 3:
In formula: Ea---axial compressive force;
Η---transmission efficiency, relevant with screw mandrel nominal diameter with pitch;
Tt---motor driving torque;
Ph---pitch (helical pitch)
This formula shows, when pitch and screw mandrel nominal diameter are determined, is proportional relation between driving torque Te and axial compressive force Ea, dull corresponding, is therefore just converted into the control to torque to the control of pressure.
Camshaft numerical control sander bed of the present invention is controlled by digital control servo system, achieve the burr grinding that multiple camshaft completes each cam place blank surface continuously, automatically, especially in upper/lower die adjacent side edge, a lot of batches of peak burrs, by the combination of flexible structure and digital control system, complete processing.Change and originally relied on the manufacturing procedure manually completed completely, achieve full-automatic, Continuous maching, in process, maintain the uniformity of technological parameter, ensure and improve crudy, drastically increasing operating efficiency.
Claims (5)
1. a camshaft numerical control sander bed, it is characterized in that: comprise lathe bed (5), working plate (6), abrasive grinding wheel (7), headstock mechanism (1), bistrique assembly (3), tailstock system (14), rotate servomotor (8), longitudinally large slide unit (2), axial servomotor (9), compliant mechanism (4), feed servo motor (10), numerical control device (11), described lathe bed (5) is provided with working plate (6), described working plate (6) is provided with slide unit (18), described working plate (6) is provided with T-slot makes tailstock system (14) move axially along camshaft (16) direction, tailstock system (14) rear end is provided with single-acting cylinder (15), working plate (6) rear is provided with longitudinally large slide unit (2), longitudinally large slide unit (2) is driven by axial servomotor (9) and does axially-movable, longitudinally large slide unit (2) is provided with compliant mechanism (4), described headstock mechanism (1) is connected with and rotates servomotor (8), described compliant mechanism (4) connects feed servo motor (10), described abrasive grinding wheel (7) connects bistrique assembly (3), described numerical control device (11) is connected to lathe bed (5), the process of this camshaft numerical control sander bed is as follows:
A upper offset cam axle, after machining, longitudinally large slide unit is in lathe farthest right position, compliant mechanism is in lathe rearmost position, at this moment manually steps on floor push, is lifted down by the camshaft processed, change another offset cam axle unprocessed, starting switch, after startup:
1st step: abrasive grinding wheel starts to rotate under the effect of bistrique assembly, and feed servo driven by motor compliant mechanism contacts camshaft with abrasive grinding wheel, until receive pressure appropriate signals;
2nd step: axial servomotor drives longitudinally large slide unit, and together with compliant mechanism and the abrasive grinding wheel of top, move from right to left, now abrasive grinding wheel completes first deburring process on camshaft;
3rd step: the whole compliant mechanism of feed servo driven by motor leaves camshaft, returns initial point, rotates servomotor and drives the main axis 180 ° be arranged in headstock mechanism, start the processing of second batch of peak burr;
4th step: feed servo driven by motor whole compliant mechanism contact camshaft, axial servomotor drives longitudinally large slide unit, move from left to right together with the compliant mechanism of top and abrasive grinding wheel, now abrasive grinding wheel completes second batch of peak deburring process on camshaft;
5th step: after completing second batch of peak deburring, longitudinally large slide unit is parked in the right initial point, whole compliant mechanism returns back initial point under feed servo driven by motor, abrasive grinding wheel stops operating under the effect of bistrique assembly, rotating servomotor drives the main shaft in headstock mechanism to forward first surface 0 point to, at this moment on numerical control device, system all gets back to zero-bit, waits for next loop start.
2. camshaft numerical control sander bed as claimed in claim 1, be is characterized in that: longitudinally connected by two extension springs (17) between slide unit (2) and compliant mechanism (4) greatly.
3. camshaft numerical control sander bed as claimed in claim 1, is characterized in that: described lathe bed (5) below is provided with floor push (13).
4. camshaft numerical control sander bed as claimed in claim 1, is characterized in that: described working plate (6) and the intersection of lathe bed (5) are provided with and start instruction for numerical control device (11) thus start the starting switch (12) that whole lathe completes cyclic process process.
5. camshaft numerical control sander bed as claimed in claim 1, is characterized in that: described abrasive grinding wheel (7) is located at the left side of compliant mechanism (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210556049.6A CN103042454B (en) | 2012-12-19 | 2012-12-19 | Camshaft numerical control sander bed |
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| CN201210556049.6A CN103042454B (en) | 2012-12-19 | 2012-12-19 | Camshaft numerical control sander bed |
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| CN103042454A CN103042454A (en) | 2013-04-17 |
| CN103042454B true CN103042454B (en) | 2016-01-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769987A (en) * | 2014-01-24 | 2014-05-07 | 重庆希米机械设备有限公司 | Automatic crankshaft polishing device |
| CN105150047B (en) * | 2015-08-19 | 2018-07-31 | 江苏大学 | A kind of method and apparatus of removal crankshaft oil hole burr |
| CN109773247A (en) * | 2019-02-21 | 2019-05-21 | 安徽新园矿山设备制造有限责任公司 | A kind of edge milling machines suitable for roller carrier shaft processing |
| CN114290157A (en) * | 2021-12-13 | 2022-04-08 | 樟树市易正机械有限公司 | Camshaft numerical control machine tool of polishing convenient to multiple camshaft surface burr grinding |
Citations (6)
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|---|---|---|---|---|
| GB1062818A (en) * | 1963-08-09 | 1967-03-22 | Toyo Kogyo Kabushiki Kaisha | Rotating type cam grinding machine |
| US3895279A (en) * | 1972-11-17 | 1975-07-15 | Toyoda Machine Works Ltd | Numerically controlled machine tool |
| CN2635281Y (en) * | 2003-05-12 | 2004-08-25 | 刘成龙 | Bar stock sand wheel shuttle reversing machine having flexible belt pressing driving device |
| CN101585162A (en) * | 2009-07-03 | 2009-11-25 | 湖南大学 | Numerically controlled grinder suitable for multi-station composite grinding of cam axle |
| CN201900528U (en) * | 2010-08-13 | 2011-07-20 | 武汉振中科技发展有限公司 | Flash and burr fine grinding machine tool for metal casting |
| CN202985299U (en) * | 2012-12-19 | 2013-06-12 | 南通德鑫数控机床有限公司 | Numerically-controlled camshaft grinding lathe |
-
2012
- 2012-12-19 CN CN201210556049.6A patent/CN103042454B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1062818A (en) * | 1963-08-09 | 1967-03-22 | Toyo Kogyo Kabushiki Kaisha | Rotating type cam grinding machine |
| US3895279A (en) * | 1972-11-17 | 1975-07-15 | Toyoda Machine Works Ltd | Numerically controlled machine tool |
| CN2635281Y (en) * | 2003-05-12 | 2004-08-25 | 刘成龙 | Bar stock sand wheel shuttle reversing machine having flexible belt pressing driving device |
| CN101585162A (en) * | 2009-07-03 | 2009-11-25 | 湖南大学 | Numerically controlled grinder suitable for multi-station composite grinding of cam axle |
| CN201900528U (en) * | 2010-08-13 | 2011-07-20 | 武汉振中科技发展有限公司 | Flash and burr fine grinding machine tool for metal casting |
| CN202985299U (en) * | 2012-12-19 | 2013-06-12 | 南通德鑫数控机床有限公司 | Numerically-controlled camshaft grinding lathe |
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