CN106826464B - Numerical control swinging mechanism for aspherical optical element polishing - Google Patents

Numerical control swinging mechanism for aspherical optical element polishing Download PDF

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Publication number
CN106826464B
CN106826464B CN201710000693.8A CN201710000693A CN106826464B CN 106826464 B CN106826464 B CN 106826464B CN 201710000693 A CN201710000693 A CN 201710000693A CN 106826464 B CN106826464 B CN 106826464B
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CN
China
Prior art keywords
crank
rod
motor
polishing
slide unit
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CN201710000693.8A
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Chinese (zh)
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CN106826464A (en
Inventor
焦翔
谭小红
朱健强
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Shanghai Institute of Optics and Fine Mechanics of CAS
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Shanghai Institute of Optics and Fine Mechanics of CAS
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor

Abstract

A kind of numerical control swinging mechanism for aspherical optical element polishing, it mainly include rack, spindle motor, automatically controlled crank, automatically controlled connecting rod, rocking bar, swing arm, clump weight, candan universal joint, polishing disk, controller and electric slip ring, wherein automatically controlled crank and automatically controlled length of connecting rod can be controlled by controller, to control the amplitude of oscillation and swing position of the non-spherical repairing with polishing disk.The present invention may replace the process for repairing band when aspherical optical element polishing by hand, improve processing efficiency, and overcomes and repair inaccurate, the non-uniform disadvantage of polish pressure distribution with TRAJECTORY CONTROL by hand, improve machining accuracy.

Description

Numerical control swinging mechanism for aspherical optical element polishing
Technical field
The present invention relates to optical manufacturing, especially a kind of numerical control swinging mechanism for aspherical optical element polishing.
Background technique
At patent " a kind of numerical control polishing mechanical hand of optical elements of large caliber " (101386146 B of patent publication No. CN) In, describe a kind of numerical control swing type polishing mechanical.The machinery X-axis is swinging axle, and Y-axis is telescopic shaft, is servo motor control System, it is assumed that run rubbing head by the track of setting, then servo motor is likely to not do uniform circular motion, but does complexity Variable motion, the motor for doing complicated variable motion can not have high revolving speed, it means that the movement speed of rubbing head is limited, Simultaneously because having used the rubbing head of active drive, this kind of rubbing head is limited movement speed further since quality is larger, that Lathe rubbing head rotation, it is whole with the movement of lower speed, accordingly, the invention and traditional numerical control polishing mode (CCOS) It is no different, the workpiece of processing is easy there are knife mark, not applicable in some occasions;If adjusting position of the eccentric shaft on balance, reduce Eccentricity so that X-axis driving motor can with complete cycle uniform rotation, although the available certain raising of X-axis movement speed, but still by The limitation of the biggish rubbing head of quality, cannot be very high, and on the other hand, polishing locus is single at this time, is not able to satisfy element processing It needs.
In conclusion the invention campaign is inflexible, it is no different with traditional numeric-control polishing mode (CCOS), cannot replace tradition Band mode is repaired, and the good effect cannot be reached.
It is repaired using small tool with the power and little needed, traditional numeric-control is polished mode (CCOS), added using bulky lathe Work, flexibility is poor, and processing quality is poor, still needs to retouch in many cases, but retouches aspherical optical element and there is labour by force The shortcomings that degree is big, face shape is difficult to control accurately, so there is an urgent need to the throwings that one kind can replace retouching in aspherics processing Light device.
Summary of the invention
The purpose of the present invention is provide a kind of for the polishing of rotational symmetric aspheric optical element in order to solve the above problem Numerical control swinging mechanism, which can replace tradition to retouch aspherical process.
Technical solution of the invention is as follows:
It is a kind of for aspherical optical element polishing numerical control swinging mechanism, it is characterized in that, including rack, spindle motor, Automatically controlled crank, automatically controlled connecting rod, rocking bar, swing arm, clump weight, candan universal joint, polishing disk, controller and electric slip ring, the electricity Controlling crank includes crank shelf, crank motor, crank screw rod, crank guide rail and crank slide unit, and the automatically controlled connecting rod includes connecting rod Frame, connecting rod motor, connecting rod screw rod, link track and connecting rod slide unit;
Crank shelf, crank motor, crank screw rod, crank guide rail and the crank slide unit composition straight line of the automatically controlled crank are led Rail slide unit module is installed with vertical shaft on the crank shelf, vertical shaft is installed on the crank slide unit, described The vertical shaft of crank shelf is mounted in the rack by bearing, and the moving direction of the crank slide unit is perpendicular to described Crank shelf vertical rotor shaft direction, the spindle motor is fixed in the rack, the axis of the spindle motor Direction is vertical direction, and the rotor output of the spindle motor is connected to the vertical of the crank shelf by shaft coupling and turned On axis, connecting rod rest, connecting rod motor, connecting rod screw rod, link track and the connecting rod slide unit of the automatically controlled connecting rod form linear guide One end of slide unit module, the connecting rod rest is mounted in the vertical shaft of the crank slide unit by bearing, the company Vertical shaft is installed on bar slide unit, after the vertical shaft of the connecting rod slide unit is connected to the rocking bar by bearing End, the front end of the rocking bar are installed with vertical shaft, and the vertical shaft of the rocking bar is connected to the machine by bearing On frame, the rear end of the swing arm is being equipped with horizontal rotating shaft perpendicular to pendulum arm length direction, and the horizontal rotating shaft of the swing arm is logical It crosses bearing to be connected on the rocking bar, the swing arm is equipped with extension rod backward, is installed on the extension rod of the swing arm The clump weight, the output rod of one end of the candan universal joint is installed in the front end of the swing arm upwards, described The polishing disk is installed with below the other end of candan universal joint, the electric slip ring covers the vertical axes in the crank shelf On, the control terminal of the controller is wired to spindle motor, the rocking bar motor and the electricity On the input terminal of slip ring, the output end of the electric slip ring is connected on the input terminal of the crank motor by conducting wire.
The rack includes pedestal, adjustment frame and pull rod group three parts, and the pedestal is equipped with level board, described Adjustment frame is equipped with horizonal base plate, and the pull rod group includes 4~8 pull rods, and one end of 4~8 pull rods passes through spiral shell The front and rear sides of the fixed horizonal base plate of bolt, the other end of 4~8 pull rods are bolted on the water The front and rear sides of flat underside.
Each unit of the pull rod group is provided with long stripes through hole, and strip direction is the length direction along pull rod.
The rack includes pedestal and adjustment frame two parts, and the pedestal is equipped with vertical fixed plate, the tune Whole frame is equipped with horizontal mounting plate, and the horizontal mounting plate is bolted in the vertical fixed plate.
The numerical control swinging mechanism for aspherical optical element polishing, it is characterized in that the spindle motor is exchange Decelerating motor or DC speed-reducing.
The crank motor is stepper motor or servo motor.
The rocking bar motor is stepper motor or servo motor.
Two axis of the candan universal joint intersect, and intersection point is small at a distance from the position of polishing disk described in connection In 2 centimetres.
The controller includes programmable two axle movement controller and AC motor speed controller or direct current generator tune Fast controller.
The working principle of the invention description are as follows:
By the pedestal stationary phase pair in the rack on the correct position of polishing workpiece, unclamp solid in the rack The bolt of the fixed pull rod or the bolt for unclamping the fixed plate and mounting plate in the fixed rack, adjust the rack Adjustment frame relative to workpiece to suitable angle.Rack, automatically controlled crank, automatically controlled connecting rod and the rocking bar constitute crank and The adjustable crank and rocker mechanism of length of connecting rod, automatically controlled crank being rotated by the spindle motor are described Automatically controlled crank rotation drives the rocking bar to swing by the automatically controlled connecting rod, and the rocking bar drives the polishing disk to exist It is swung on workpiece, the controller passes through control by the slew rate of the control spindle motor control polishing disk The polishing disk amplitude of oscillation described in the crank motor control, by the pendulum for controlling polishing disk described in the connecting rod motor control Dynamic position, to complete the grinding or polishing of aspherical optical element.
Compared with prior art, the beneficial effects of the present invention are:
During traditional retouching rotational symmetric aspheric optical element, as long as hand is on the radial direction of optical element Movement is just enough, and motion control parameter mainly includes slew rate, the amplitude of oscillation and swing position, contacts polishing disk well with workpiece mainly Control by hand to polishing disk, reasonable control should make rubbing head that can float with two dimension angular.In the present invention, the control Device processed controls the slew rate of the polishing disk by the control spindle motor, by controlling the crank motor control institute The polishing disk amplitude of oscillation stated passes through described ten by controlling the swing position of polishing disk described in the connecting rod motor control Word universal joint allows the polishing disk two dimension to float, so the present invention can simulate the process of retouching.
Compared with retouching aspherical mode, which can be improved processing efficiency and machining accuracy.With other mechanical polishinges Mode is compared, which has the advantages that rubbing head drive part is light and handy, movement speed is fast, these advantages can help to reduce work The intermediate frequency error of part face shape.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention for the numerical control pendulum of aspherical optical element polishing;
Fig. 2 is a kind of pull rod shape for connecting pedestal and adjustment frame in rack in the present invention;
Fig. 3 is the structural diagram of the invention;
Fig. 4 is a kind of aspheric surface;
Fig. 5 is a kind of motion profile of polishing disk in the present invention;
In figure, 1- rack, 2- spindle motor, the automatically controlled crank of 3-, 3-1- crank shelf, 3-2- crank motor, 3-3- crank silk Bar, 3-4- crank guide rail, 3-5- crank slide unit, the automatically controlled connecting rod of 4-, 4-1- connecting rod rest, 4-2- connecting rod motor, 4-3- connecting rod screw rod, 4-4- link track, 4-5- connecting rod slide unit, 5- rocking bar, 6- swing arm, 7- clump weight, 8- candan universal joint, 9- polishing disk, 10- control Device processed, 11- electric slip ring, 12- workpiece.
Specific embodiment
Now in conjunction with embodiment, the invention will be further described.
It is that structural schematic diagram, including rack are put in numerical control of the present invention for aspherical optical element polishing referring to Fig. 1, Fig. 1 1, spindle motor 2, automatically controlled crank 3, automatically controlled connecting rod 4, rocking bar 5, swing arm 6, clump weight 7, candan universal joint 8, polishing disk 9, control Device 10 and electric slip ring 11, the automatically controlled crank 3 include crank shelf 3-1, crank motor 3-2, crank screw rod 3-3, crank guide rail 3-4 and crank slide unit 3-5, the automatically controlled connecting rod 4 are led including connecting rod rest 4-1, connecting rod motor 4-2, connecting rod screw rod 4-3, connecting rod Rail 4-4 and connecting rod slide unit 4-5;
Crank shelf 3-1, crank motor 3-2, crank screw rod 3-3, crank guide rail 3-4 and the crank of the automatically controlled crank 3 Slide unit 3-5 forms linear guide slide unit module, is installed with vertical shaft, the crank slide unit 3-5 on the crank shelf 3-1 On be installed with vertical shaft, the vertical shaft of the crank shelf 3-1 is mounted in the rack 1 by bearing, described Vertical rotor shaft direction of the moving direction of crank slide unit 3-5 perpendicular to the crank shelf 3-1, the fixation of spindle motor 2 In the rack 1, the axis direction of the spindle motor 2 is vertical direction, and the rotor of the spindle motor 2 exports End is connected in the vertical shaft of the crank shelf 3-1 by shaft coupling, connecting rod rest 4-1, the connecting rod of the automatically controlled connecting rod 4 Motor 4-2, connecting rod screw rod 4-3, link track 4-4 and connecting rod slide unit 4-5 form linear guide slide unit module, the connecting rod rest One end of 4-1 is mounted in the vertical shaft of the crank slide unit 3-5 by bearing, fixed on the connecting rod slide unit 4-5 There is vertical shaft, the vertical shaft of the connecting rod slide unit 4-5 is connected to the rear end of the rocking bar 5 by bearing, described The front end of rocking bar 5 is installed with vertical shaft, and the vertical shaft of the rocking bar 5 is connected in the rack 1 by bearing, institute The rear end for the swing arm 6 stated is being equipped with horizontal rotating shaft perpendicular to pendulum arm length direction, and the horizontal rotating shaft of the swing arm 6 passes through bearing It is connected on the rocking bar 5, the swing arm 6 is equipped with extension rod backward, is installed on the extension rod of the swing arm 6 described Clump weight 7, the output rod of one end of the candan universal joint 8 is installed in the front end of the swing arm 6 upwards, described ten The polishing disk 9 is installed with below the other end of word universal joint 8, described 11 sets of electric slip ring the crank shelf 3-1's In vertical axes, the control terminal of the controller 10 is wired to the spindle motor 2, the rocking bar motor 4- 2 and the electric slip ring 11 input terminal on, the output end of the electric slip ring 11 is connected to the crank electricity by conducting wire On the input terminal of machine 3-2.
The described numerical control swinging mechanism for aspherical optical element polishing, it is characterized in that the rack 1 include pedestal, Adjustment frame and pull rod group three parts, the pedestal are equipped with level board, and the adjustment frame is equipped with horizonal base plate, described Pull rod group includes 4~8 pull rods, and one end of 4~8 pull rods is bolted the front and back two of the horizonal base plate Side, the other end of 4~8 pull rods are bolted on the front and rear sides of the horizonal base plate;
Each unit of the pull rod group is provided with long stripes through hole along the length direction of pull rod, is this referring to Fig. 2, Fig. 2 A kind of pull rod shape connecting pedestal and adjustment frame in rack in invention;
The rack 1 includes pedestal and adjustment frame two parts, and the pedestal is equipped with vertical fixed plate, the tune Whole frame is equipped with horizontal mounting plate, and the horizontal mounting plate is bolted in the vertical fixed plate;
The spindle motor 2 is AC gear motor or DC speed-reducing;
The crank motor 3-2 is stepper motor or servo motor;
The rocking bar motor 4-2 is stepper motor or servo motor;
Two axis of the candan universal joint 8 intersect, and intersection point is at a distance from the position of polishing disk 9 described in connection Less than 2 centimetres;
The controller 10 includes programmable two axle movement controller and AC motor speed controller or direct current generator Speed setting controller.
The course of work of the invention is described now in conjunction with Fig. 3, Fig. 3 is structure diagram of the invention, and crank 3 does circumferential rotation type, To drive 5 reciprocally swinging of rocking bar, rocking bar 5 drives polishing disk 9 to swing and is used as Polishing Motion by swing arm 6, according to schematic diagram it is found that The revolving speed of crank 3 can control the slew rate of polishing disk 9, and the length of crank 3 can control the amplitude of oscillation of polishing disk 9, the length of connecting rod 4 The swing position that can control polishing disk 9, slew rate, the amplitude of oscillation and the swing position that reasonable polishing disk 9 is arranged can be completed to appoint The grinding or polishing of meaning rotational symmetric aspheric.
Illustrate a kind of actual processing.Referring to fig. 4, Fig. 4 is a kind of aspheric surface, and dash area is should be from quasi- The part that spherical surface is repaired is closed, for maximum removal amount in 0.7 band position, center and peripheral removal amount is zero.It is this hair referring to Fig. 5, Fig. 5 A kind of motion profile of bright middle polishing disk, for the aspherical of type shown in manuscript 4, as seen from Figure 5, polishing disk is in workpiece The heart and edge residence time are very short, and in 0.7 band residence time longest, removal amount is related with the residence time, with this by fit sphere Accomplish required aspheric surface.

Claims (9)

1. a kind of numerical control swinging mechanism for aspherical optical element polishing, which is characterized in that including rack (1), spindle motor (2), automatically controlled crank (3), automatically controlled connecting rod (4), rocking bar (5), swing arm (6), clump weight (7), candan universal joint (8), polishing disk (9), controller (10) and electric slip ring (11), the automatically controlled crank (3) include crank shelf (3-1), crank motor (3-2), song Handle screw rod (3-3), crank guide rail (3-4) and crank slide unit (3-5), the automatically controlled connecting rod (4) include connecting rod rest (4-1), connect Bar motor (4-2), connecting rod screw rod (4-3), link track (4-4) and connecting rod slide unit (4-5);
Crank shelf (3-1), crank motor (3-2), crank screw rod (3-3), the crank guide rail (3-4) of the automatically controlled crank (3) Linear guide slide unit module is formed with crank slide unit (3-5), is installed with vertical shaft on the crank shelf (3-1), it is described It is installed with vertical shaft on crank slide unit (3-5), the vertical shaft of the crank shelf (3-1) is mounted on described by bearing In rack (1), the moving direction of the crank slide unit (3-5) perpendicular to the crank shelf (3-1) vertical rotor shaft direction, The spindle motor (2) is fixed in the rack (1), and the axis direction of the spindle motor (2) is vertical direction, The rotor output of the spindle motor (2) is connected in the vertical shaft of the crank shelf (3-1) by shaft coupling, institute Connecting rod rest (4-1), connecting rod motor (4-2), connecting rod screw rod (4-3), link track (4-4) and the connecting rod for the automatically controlled connecting rod (4) stated Slide unit (4-5) forms linear guide slide unit module, and one end of the connecting rod rest (4-1) is mounted on the crank by bearing In the vertical shaft of slide unit (3-5), vertical shaft, the connecting rod slide unit (4-5) are installed on the connecting rod slide unit (4-5) Vertical shaft the rear end of the rocking bar (5) is connected to by bearing, the front end of the rocking bar (5) is installed with vertical turn The vertical shaft of axis, the rocking bar (5) is connected in the rack (1) by bearing, and the rear end of the swing arm (6) exists It is equipped with horizontal rotating shaft perpendicular to pendulum arm length direction, the horizontal rotating shaft of the swing arm (6) is connected to described shake by bearing On bar (5), the swing arm (6) is equipped with extension rod backward, and the clump weight is installed on the extension rod of the swing arm (6) (7), the output rod of one end of the candan universal joint (8) is installed in the front end of the swing arm (6), the cross upwards The polishing disk (9) is installed with below the other end of universal joint (8), the electric slip ring (11) is covered in the crank shelf In the vertical axes of (3-1), the control terminal of the controller (10) is wired to the spindle motor (2), described Connecting rod motor (4-2) and the electric slip ring (11) input terminal on, the output end of the electric slip ring (11) passes through conducting wire It is connected on the input terminal of the crank motor (3-2).
2. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that the machine Frame (1) includes pedestal, adjustment frame and pull rod group, and the pedestal is equipped with level board, and the adjustment frame is equipped with horizontal base Plate, the pull rod group include 4~8 pull rods, and one end of 4~8 pull rods is bolted the horizontal base The front and rear sides of plate, the other end of 4~8 pull rods are bolted on the front and rear sides of the horizonal base plate.
3. the numerical control swinging mechanism according to claim 2 for aspherical optical element polishing, it is characterized in that the machine Pull rod group each unit of frame (1) is provided with long stripes through hole, and strip direction is the length direction along pull rod.
4. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that the machine Frame (1) includes pedestal and adjustment frame, and the pedestal is equipped with vertical fixed plate, and the adjustment frame is equipped with vertically-mounted Plate, the horizontal mounting plate are bolted in the vertical fixed plate.
5. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that the master Spindle motor (2) is AC gear motor or DC speed-reducing.
6. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that the song Handle motor (3-2) is stepper motor or servo motor.
7. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that the company Bar motor (4-2) is stepper motor or servo motor.
8. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that described ten Two axis of word universal joint (8) intersect, and less than 2 centimetres at a distance from the position of polishing disk (9) described in intersection point and connection.
9. the numerical control swinging mechanism according to claim 1 for aspherical optical element polishing, it is characterized in that the control Device (10) processed includes programmable two axle movement controller and AC motor speed controller or DC machine actiyator.
CN201710000693.8A 2017-01-03 2017-01-03 Numerical control swinging mechanism for aspherical optical element polishing Active CN106826464B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107877349B (en) * 2017-11-01 2019-04-16 湖南宇晶机器股份有限公司 A kind of fluid polishing machine
CN107877364B (en) * 2017-11-01 2019-04-26 湖南宇晶机器股份有限公司 A kind of loading device of fluid polishing machine
CN108436665A (en) * 2018-05-09 2018-08-24 广东工业大学 A kind of burnishing device for optical element
CN109129105B (en) * 2018-08-22 2020-12-04 中国科学院上海光学精密机械研究所 Floating polishing disk driving mechanism
CN109623561B (en) * 2018-12-17 2021-03-02 中国科学院上海光学精密机械研究所 Centripetal driving mechanism for grinding and polishing disk and method for adjusting machining optical element
CN110370152B (en) * 2019-06-06 2020-08-18 浙江工业大学 Plane polishing method

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Publication number Priority date Publication date Assignee Title
SU1682130A1 (en) * 1986-11-11 1991-10-07 Предприятие П/Я Г-4871 Machine for two-side finishing of spherical surfaces
CN103252700B (en) * 2013-05-24 2016-04-13 中国科学院上海光学精密机械研究所 Polishing disk is brushed automatically
CN103341807A (en) * 2013-06-24 2013-10-09 中国科学院长春光学精密机械与物理研究所 Double-pendulum polar coordinate quick aspheric surface numerical-control processing machine tool
CN103586753B (en) * 2013-11-15 2016-03-16 成都精密光学工程研究中心 Off-axis aspheric surface optical processing unit (plant)

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