CN100436057C - Pressure-speed-regulating die curve grinding-polishing system - Google Patents
Pressure-speed-regulating die curve grinding-polishing system Download PDFInfo
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- CN100436057C CN100436057C CNB200610017247XA CN200610017247A CN100436057C CN 100436057 C CN100436057 C CN 100436057C CN B200610017247X A CNB200610017247X A CN B200610017247XA CN 200610017247 A CN200610017247 A CN 200610017247A CN 100436057 C CN100436057 C CN 100436057C
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Abstract
The present invention relates to a pressure-regulated and speed-regulated die curved surface grinding and polishing system. Said invention is formed from grinding-polishing terminal executor, grinding-polishing pressure control system and grinding-polishing speed control system. The servo motor is shared by grinding-polishing terminal executor and grinding-polishing speed control system; the cylindes in the grinding-polishing terminal executor and grinding-polishing pressure control system are connected with pressure servo-valve and pressure sensor, the computers in the grinding-polishing pressure control system and grinding-polishing speed control system are connected with virtual shaft machine tool by means of numerical control system, said computers at same time are connected with pressure sensor and servo-motor.
Description
Technical field
The invention belongs to processing, the manufacturing field of mould and curved surface part, relate to curved surface automation polishing process technology.
Background technology
The manufacturing equipment of Mould Machining and correlation technique thereof are the bases of mould industry development, and be towards the curved surface automatic grinding polishing technology and the associated equipment research thereof of industries such as mould, significant for the development that promotes industries such as automobile, electronics.The fine finishining of die curve and polishing processing at present mostly by experienced operator's manual operations, exists the drawback of time-consuming, effort and crudy difference.Finish die curve fine finishining, its key is the automatic processing system of development mold freedom curved surface polishing processing high-quality and high-efficiency.
Use on Digit Control Machine Tool in the spherical polishing emery wheel polishing free form surface process, along with spherical polishing emery wheel moving on curved surface, the point of contact surface changes along with the variation of curve form on the spherical polishing wheel face.The contact area of spherical polishing emery wheel and curved surface (owing to the strain of emery wheel forms a little contact area) is relevant with the die curve shape of instantaneous polishing point; Because spherical polishing emery wheel is permanent rotating speed, the change of polishing point has caused the variation of polishing speed on the spherical polishing wheel face simultaneously.Above-mentioned two aspect factors all cause on the curved surface each point removal amount inconsistent, influence the form accuracy of curved surface.
Generally adopt the level pressure method to solve the inconsistent problem of removal amount at present, the level pressure method is to keep spherical polishing emery wheel in the polishing process to contact constant pressure with normal direction between the die curve.Owing to the variation along with curve form of spherical polishing emery wheel and curved surface contact area changes, guarantee that constant pressure can not guarantee the pressure polishing, and this method is not considered the influence of velocity variations to removal amount, therefore this level pressure method can not guarantee the uniformity of curved surface removal amount well, can have influence on the shape machining accuracy of curved surface.
Summary of the invention
The objective of the invention is to overcome the uneven shortcoming of the automatic polishing equipment of existing mold free form surface removal amount, make the removal amount uniformity of automatic polishing curved surface.
The technical scheme that the present invention solves the key issue employing is:
1. carry out the power and the displacement synchronous control of polishing process.In the moving process of spherical polishing emery wheel, according to the die curve curvature of the instantaneous polishing point of spherical polishing emery wheel, adjust spherical polishing emery wheel in real time and contact pressure with normal direction between curved surface, realize the pressure polishing;
2. in the polishing process, carry out velocity compensation control.Peripheral velocity at the point that radius of turn is different on the spherical polishing wheel face is unequal, and the polishing velocity variations that causes, according to the emery wheel radius of gyration of spherical polishing emery wheel and the instantaneous contact point of mould, adjust spherical polishing grinding wheel speed in real time and carry out velocity compensation.
Because the present invention has adopted technique scheme, by Synchronization Control and the velocity compensation to power and displacement in the polishing process, has reached the purpose of even removal curved surface surplus.
Concrete structure of the present invention is as follows:
It is made up of polishing end effector, polishing control pressurer system and polishing speed control system, and servomotor 9 is that polishing end effector and polishing speed control system are total; The total cylinder 8 of polishing end effector and polishing control pressurer system is connected with pressure servo valve, baroceptor in the polishing control pressurer system; The polishing control pressurer system is connected with virtual-shaft machine tool through digital control system with the total computer of polishing speed control system, is connected with the baroceptor of polishing position-detection sensor 19, polishing control pressurer system, the servomotor 9 of polishing speed control system simultaneously; Pressure-speed-regulating die curve grinding-polishing system need be installed on the virtual-shaft machine tool and use.
The polishing end effector is by support 1, lead 2, spring 3, motor cabinet 4, screw 5, motor gland 6, cylinder piston rod 7, cylinder 8, servomotor 9, cylinder joint 10, linear bearing 11, bolt 12, nut 13, main shaft cover for seat 14, main shaft 15, chuck 16, bearing 17 and shaft joint 18 are formed, wherein servomotor 9, motor cabinet 4, linear bearing 11, lead 2 and support 1 are linked in sequence, servomotor 9 is fastened on the motor cabinet 4 by screw 5 and motor gland 6, two leads 2 are symmetrically distributed, lead 2 is fixed on the support 1 by nut 13, and motor cabinet 4 is installed on two leads 2 by four linear bearings 11; Two cylinders 8 are installed on the support 1 by the screw thread symmetry, and the piston rod of cylinder 8 withstands on above the motor cabinet 4; Spring 3 is installed on the lead 2, and between motor cabinet 4 and support 1, two spring left-right symmetry distribute; Chuck 16, main shaft 15, shaft joint 18, servomotor 9 are linked in sequence; Main shaft 15 is supported in the main shaft cover for seat 14 by bearing 17, and main shaft cover for seat 14 is fastened on the shell of servomotor 9 by bolt 12.Chuck 16 is used to install spherical polishing emery wheel, and the spring 3 that is enclosed within on the lead 2 upwards resets motor cabinet 4, the normal pressure between spherical polishing emery wheel of the air pressure adjustment in the change cylinder 8 and curved surface.
The polishing control pressurer system is made up of polishing position-detection sensor, source of the gas, filter, pressure servo valve, cylinder, baroceptor and computer, and wherein polishing position-detection sensor 19 is connected with computer; Source of the gas, filter, pressure servo valve, cylinder and baroceptor are linked in sequence; Baroceptor (signal output part) is connected with computer, and computer has a line directly to be connected with pressure servo valve (control signal input).The polishing control pressurer system adopts the pressure in the pneumatic servo adjusting cylinder, the compressed air that source of the gas produces is earlier by filter cleaning, input pressure servo valve again, the control signal that pressure servo valve sends according to computer is regulated the output pressure of servo valve, by the air pressure of control cylinder, regulate spherical polishing emery wheel and contact pressure with the normal direction of curved surface.
The polishing speed control system is made up of polishing position-detection sensor, computer and servomotor, and wherein polishing position-detection sensor 19 is connected with computer, and computer is connected with servomotor 9.
In the annexation of virtual-shaft machine tool and native system, polishing position-detection sensor 19 is installed on the ball-screw 21 of virtual-shaft machine tool, and polishing end effector 22 is installed in below the virtual-shaft machine tool moving platform 20 by bolt.
Need ben technical characterictic and architectural feature to be:
(1) surpluses such as power, displacement synchronous control and velocity compensation formula are removed.In the polishing process, carry out the control of power and displacement synchronous, according to and the die curve shape of spherical polishing emery wheel contact point adjust normal pressure between spherical polishing emery wheel and curved surface in real time, realize that the polishing constant voltage is strong; According to the variation of the radius of gyration of polishing point on the spherical polishing emery wheel, adjust spherical polishing grinding wheel speed in real time and carry out velocity compensation.
(2) architectural feature of polishing end effector is: servomotor 9, motor cabinet 4, linear bearing 11, lead 2, support 1 are linked in sequence, and two leads 2 are symmetrically distributed; Two cylinders 8 are installed in above the support 1 by the screw thread symmetry, and the piston rod of cylinder 8 withstands on above the motor cabinet 4; Spring 3 is installed on the lead 2, and between motor cabinet 4 and support 1, two springs are symmetrically distributed.
The course of work of pressure-speed-regulating die curve grinding-polishing system:
In the polishing process, polishing end effector 22 is done the curve feed motion according to the die curve shape under the drive of virtual-shaft machine tool moving platform 20.Computer receives polishing position-detection sensor 19 detected instantaneous polishing positional informations, die curve shape according to instantaneous polishing position, send signal to pressure servo valve, control servo valve output pressure changes spherical polishing emery wheel and contacts pressure with normal direction between the mould.When the contact area of spherical polishing emery wheel and die curve increases, increase pressure, otherwise reduce pressure.
Simultaneously, computer is according to the variation of the radius of gyration of polishing point on the spherical polishing emery wheel, and control servomotor 9 changes rotating speed, adjusts spherical polishing grinding wheel speed in real time and carries out velocity compensation.The control of polishing speed is to realize by the rotating speed of control servomotor 9, when the radius of gyration of spherical polishing wheel face polishing point increases, reduces grinding wheel speed, on the contrary rev up.
Servomotor 9 can move up and down along lead 2 together with motor cabinet 4, by the air pressure in the control cylinder 8, realizes the real-time control of polishing pressure.In the polishing process, spherical polishing emery wheel is guaranteed by virtual-shaft machine tool that along the movement locus of curved surface motor cabinet 4 only is owing to the uneven small relative slip that causes of die surface microcosmic with respect to the slip of lead 2.
Good effect of the present invention is: solved in the spherical polishing emery wheel polishing free form surface process the inconsistent problem of each point removal amount on the die curve that causes owing to the variation of polishing spot speed on the variation of spherical polishing wheel face and die curve contact area and the spherical polishing wheel face.By Synchronization Control to power, displacement, remove technology with surpluses such as adopting the velocity compensation formula, in the polishing process according to and the die curve shape of spherical polishing emery wheel contact point adjust the normal pressure between spherical polishing emery wheel and curved surface and the rotating speed of spherical polishing emery wheel in real time, reached the purpose that mould and curved surface surplus are evenly removed in automation.
Description of drawings
Fig. 1 is the general structure schematic diagram of pressure-speed-regulating die curve grinding-polishing system
Fig. 2 is the polishing end effector structure chart in the pressure-speed-regulating die curve grinding-polishing system
Wherein: 1. support 2. leads 3. springs 4. motor cabinets 5. screws 6. motor glands 7. cylinder piston rods 8. cylinders 9. servomotors 10. cylinder joints 11. linear bearings 12. bolts 13. nuts 14. main shaft cover for seat 15. main shafts 16. chucks 17. bearings 18. shaft joints
Fig. 3 is virtual-shaft machine tool and pressure-speed-regulating die curve grinding-polishing system schematic diagram
Wherein: ball-screw 22. polishing end effectors 23. moulds of 19. polishing position-detection sensors, 20. virtual-shaft machine tool moving platforms, 21. virtual-shaft machine tools
Fig. 4 is the pressure-speed-regulating die curve grinding-polishing system control flow chart
The specific embodiment
Pressure-speed-regulating die curve grinding-polishing system is made up of polishing end effector, polishing control pressurer system and polishing speed control system, and servomotor 9 is that polishing end effector and polishing speed control system are total; The total cylinder 8 of polishing end effector and polishing control pressurer system is connected with pressure servo valve, baroceptor in the polishing control pressurer system; The polishing control pressurer system is connected with virtual-shaft machine tool through digital control system with the total computer of polishing speed control system, is connected with the baroceptor of polishing position-detection sensor 19, polishing control pressurer system, the servomotor 9 of polishing speed control system simultaneously; Pressure-speed-regulating die curve grinding-polishing system need be installed on the virtual-shaft machine tool and use.
Servomotor 9, motor cabinet 4, linear bearing 11, lead 2 and support 1 are linked in sequence, servomotor 9 is fastened on the motor cabinet 4 by screw 5 and motor gland 6, two leads 2 are symmetrically distributed, lead 2 is fixed on the support 1 by nut 13, and motor cabinet 4 is installed on two leads 2 by four linear bearings 11; Two cylinders 8 are installed in above the support 1 by the screw thread symmetry, and the piston rod of cylinder 8 withstands on above the motor cabinet 4; Spring 3 is installed on the lead 2, and between motor cabinet 4 and support 1, two spring left-right symmetry distribute; Chuck 16, main shaft 15, shaft joint 18 and servomotor 9 are linked in sequence; Main shaft 15 is supported on main shaft cover for seat 14 inside by bearing 17, and main shaft cover for seat 14 is fastened on the shell of servomotor 9 by bolt 12.Servomotor 9 can move up and down along lead 2 together with motor cabinet 4, this structure can realize the real-time control of polishing pressure by the air pressure in the control cylinder, the variation of cylinder piston rod output pressure makes the pressure change of spherical polishing emery wheel and mould, and the air pressure in the cylinder is controlled by pressure servo valve.Computer sends signal according to the variation of die curve shape to pressure servo valve, controls the pressure that contacts of spherical polishing emery wheel and mould.In the polishing process, spherical polishing emery wheel is guaranteed by virtual-shaft machine tool along the movement locus of curved surface.
The polishing control pressurer system is made up of polishing position-detection sensor, source of the gas, filter, pressure servo valve, cylinder, baroceptor and computer, and wherein polishing position-detection sensor 19 is connected with computer; Source of the gas, filter, pressure servo valve, cylinder and baroceptor are linked in sequence; Baroceptor (signal output part) is connected with computer, and computer has a line directly to be connected with pressure servo valve (control signal input).
The polishing speed control system is made up of polishing position-detection sensor, computer and servomotor, and wherein polishing position-detection sensor 19 is connected with computer, and computer is connected with servomotor 9.
In the annexation of virtual-shaft machine tool and native system, polishing position-detection sensor 19 is installed on the ball-screw 21 of virtual-shaft machine tool, and polishing end effector 22 is installed in below the virtual-shaft machine tool moving platform 20 by bolt.
Servomotor 9 adopts 90SZ01 type DC servo motor, and pressure servo valve adopts 23BPD2 type pressure servo valve, and baroceptor adopts AK-1 type baroceptor, and cylinder adopts diaphragm cylinder.
Claims (4)
1. a pressure-speed-regulating die curve grinding-polishing system is made up of polishing end effector, polishing control pressurer system and polishing speed control system, it is characterized in that servomotor (9) is that polishing end effector and polishing speed control system are total; The total cylinder (8) of polishing end effector and polishing control pressurer system is connected with pressure servo valve, baroceptor in the polishing control pressurer system; The polishing control pressurer system is connected with virtual-shaft machine tool through digital control system with the total computer of polishing speed control system, is connected with the baroceptor of polishing position-detection sensor (19), polishing control pressurer system, the servomotor (9) of polishing speed control system simultaneously; Pressure-speed-regulating die curve grinding-polishing system need be installed on the virtual-shaft machine tool and use.
2. by the described pressure-speed-regulating die curve grinding-polishing system of claim 1, polishing end effector wherein is by support (1), lead (2), spring (3), motor cabinet (4), screw (5), motor gland (6), cylinder piston rod (7), cylinder (8), servomotor (9), cylinder joint (10), linear bearing (11), bolt (12), nut (13), main shaft cover for seat (14), main shaft (15), chuck (16), bearing (17) and shaft joint (18) are formed, it is characterized in that servomotor (9), motor cabinet (4), linear bearing (11), lead (2) and support (1) are linked in sequence, servomotor (9) is fastened on the motor cabinet (4) by screw (5) and motor gland (6), two leads (2) are symmetrically distributed, lead (2) is fixed on the support (1) by nut (13), and motor cabinet (4) is installed on two leads (2) by four linear bearings (11); Two cylinders (8) are installed on the support (1) by the screw thread symmetry, and the piston rod of cylinder (8) withstands on above the motor cabinet (4); Spring (3) is installed on the lead (2), is positioned between motor cabinet (4) and the support (1), and two spring left-right symmetry distribute; Chuck (16), main shaft (15), shaft joint (18) and servomotor (9) are linked in sequence; Main shaft (15) is supported in the main shaft cover for seat (14) by bearing (17), and main shaft cover for seat (14) is fastened on the shell of servomotor (9) by bolt (12).
3. by the described pressure-speed-regulating die curve grinding-polishing system of claim 1, polishing control pressurer system wherein is made up of polishing position-detection sensor, source of the gas, filter, pressure servo valve, cylinder, baroceptor and computer, it is characterized in that polishing position-detection sensor (19) is connected with computer; Source of the gas, filter, pressure servo valve, cylinder and baroceptor are linked in sequence; Baroceptor is connected with computer, and computer has a line directly to be connected with pressure servo valve.
4. by the described pressure-speed-regulating die curve grinding-polishing system of claim 1, polishing speed control system wherein is made up of polishing position-detection sensor, computer and servomotor, it is characterized in that polishing position-detection sensor (19) is connected with computer, computer is connected with servomotor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610017247XA CN100436057C (en) | 2006-10-17 | 2006-10-17 | Pressure-speed-regulating die curve grinding-polishing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610017247XA CN100436057C (en) | 2006-10-17 | 2006-10-17 | Pressure-speed-regulating die curve grinding-polishing system |
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| CN1935456A CN1935456A (en) | 2007-03-28 |
| CN100436057C true CN100436057C (en) | 2008-11-26 |
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| CNB200610017247XA Expired - Fee Related CN100436057C (en) | 2006-10-17 | 2006-10-17 | Pressure-speed-regulating die curve grinding-polishing system |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501157A (en) * | 2011-11-21 | 2012-06-20 | 长春大学 | Pressure adjustment type abrasive belt grinding device |
| CN102649258A (en) * | 2012-05-17 | 2012-08-29 | 广东新海岸机械有限公司 | Polishing grinding head for glass edge grinding machine |
| CN103350378B (en) * | 2013-07-16 | 2015-09-16 | 百冠(福建)机械科技发展有限公司 | A kind ofly replace artificial throwing limit machine |
| CN105798734B (en) * | 2016-03-15 | 2017-11-28 | 西安建筑科技大学 | A kind of mold freedom curved surface burnishing device and polishing method |
| CN108581716B (en) * | 2018-05-16 | 2021-01-26 | 广东工业大学 | Constant-pressure polishing method and device for optical element |
| CN109773659B (en) * | 2019-02-25 | 2020-07-10 | 华中科技大学 | Overload-prevention intelligent force-control grinding and polishing device and grinding and polishing robot |
| CN115139224B (en) * | 2022-06-17 | 2024-06-11 | 中国第一汽车股份有限公司 | Four-axis tool control method based on simulink |
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Assignee: Hongli Technology (Suzhou) Co., Ltd. Assignor: Jilin University Contract record no.: 2010320000896 Denomination of invention: Pressure-speed-regulating die curve grinding-polishing system Granted publication date: 20081126 License type: Exclusive License Open date: 20070328 Record date: 20100712 |
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