CN115070557A - Continuous polishing equipment for optical elements - Google Patents
Continuous polishing equipment for optical elements Download PDFInfo
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- CN115070557A CN115070557A CN202210665857.XA CN202210665857A CN115070557A CN 115070557 A CN115070557 A CN 115070557A CN 202210665857 A CN202210665857 A CN 202210665857A CN 115070557 A CN115070557 A CN 115070557A
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- polishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/0031—Machines having several working posts; Feeding and manipulating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/005—Blocking means, chucks or the like; Alignment devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention provides continuous polishing equipment for optical elements, which comprises a base (10), a support frame (20), a moving assembly (30), a transmission assembly (40), a connecting assembly (50), a grinding assembly (60) and a tool (70); the support frame (20) comprises a support upright post (21), a middle support frame (22) and a top fixing frame, and the top fixing frame comprises a support cross bar (231), a first cross bar (232) and a second cross bar (233); the middle supporting frame (22) is respectively provided with a moving assembly (30), a transmission assembly (40) and a connecting assembly (50), and the first cross rod (232) is provided with a polishing assembly (60); the tool (70) is respectively connected with the moving assembly (30) and the transmission assembly (40). The polishing equipment adopts the small polishing grinding head, and through controlling the cooperative work of all parts, not only can generate irregular and chaotic polishing tracks on the surface of an optical element, but also can ensure continuous polishing process and has high polishing efficiency.
Description
Technical Field
The invention relates to the technical field of optical element processing, in particular to continuous polishing equipment for optical elements.
Background
An optical element, also called an optical part, is a basic constituent unit of an optical system; most optical elements have imaging functions (such as lenses, prisms, reflectors and the like), and a small part of optical elements have special functions (such as a reticle, a filter, a grating and the like) of light splitting, image transmission, filtering and the like in an optical system.
The processing of optical elements generally includes steps such as shaping, grinding, and polishing. In the cold working process of the optical element, the prior art generally adopts classical polishing and mechanical equipment polishing to realize the polishing of the surface of the optical element. However, the polishing motion trajectory of the existing mechanical equipment is very regular and regular, so that the surface of the optical element forms regular fixed textures, the surface roughness of the optical element is poor, laser scattering and light beam quality deterioration are easily caused, the imaging quality of the optical element is seriously influenced, and secondary polishing is usually required manually; for mechanical equipment polishing, the trails of classical polishing are relatively disordered and do not have a random structure, the surface of the optical element cannot form fixed textures, the random motion trails can improve the surface shape precision and roughness distribution of the optical element, the polishing effect is better, the classical polishing needs to be carried out manually by a large amount of manpower, manpower and material resources are wasted, and the polishing efficiency is low. If the existing mechanical equipment needs to realize a random-like motion track, the requirement on the equipment is high, continuous production line production tasks cannot be performed, and the popularization and the batch production are not facilitated; that is, the conventional polishing equipment is often small in optical element, large in polishing tool, and easy to have the problem that batch polishing and random polishing tracks contradict each other in the actual production process (if batch production, that is, continuous pipeline processing, is realized, the working efficiency is high, the continuity is strong, but the relative motion between the polishing tool and the optical element is single, the polishing track generated by each optical element is very regular, the surface shape precision and the roughness distribution are poor, and if random polishing tracks are realized, different polishing tracks need to be controlled for each optical element, so that continuous pipeline production cannot be performed, the polishing efficiency is low, and the continuity is poor).
In addition, the existing mechanical equipment adopts the modes of fixing an optical element and moving a polishing grinding head to polish; after one optical element is processed in the mode, the grinding head needs to be suspended, the optical element needs to be replaced, the polishing agent needs to be added, and then the grinding head needs to be started again to work, so that the working efficiency is low, and the working procedures are complicated.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a continuous polishing apparatus for optical elements, which employs a small polishing head, and controls the cooperative work of each component, so as to generate an irregular and chaotic similar random polishing track between the polishing head and the optical element, without performing manual secondary polishing, and simultaneously ensure the continuity of the whole polishing process, and the polishing efficiency and the automation degree are high.
The purpose of the invention is realized by the following technical scheme:
a continuous polishing apparatus for optical elements, characterized in that: the device comprises a base, a support frame, a moving assembly, a transmission assembly, a connecting assembly, a polishing assembly and a tool; the supporting frames are fixedly arranged on the upper end surface of the base and comprise supporting upright columns, a middle supporting frame and a top fixing frame, the supporting upright columns are respectively arranged at four corners of the base, and the middle supporting frame is arranged among the middle parts of the four supporting upright columns; the top fixing frame is arranged at the tops of the supporting columns and comprises two supporting transverse rods, a first transverse rod and a second transverse rod, the two supporting transverse rods are parallel, two ends of the two supporting transverse rods are respectively connected with the tops of the two corresponding supporting columns, two ends of the first transverse rod are connected with the tops of the two supporting columns, the first transverse rod is perpendicular to the two supporting transverse rods, two ends of the second transverse rod are respectively connected with the middle parts of the two supporting transverse rods, the first transverse rod is parallel to the second transverse rod, and the middle parts of the first transverse rod and the second transverse rod are both arranged to be of downward convex trapezoidal structures; the middle supporting frame is respectively provided with a moving assembly, a transmission assembly and a connecting assembly, and the first cross rod is provided with a polishing assembly; the tool is connected with the moving assembly and the transmission assembly respectively, and an optical element to be polished is arranged on the tool.
For further optimization, the moving assembly comprises a first motor, a lead screw and a moving holder; the two first motors are respectively arranged on the lower end face of one side of the middle supporting frame, the output end of each first motor is fixedly connected with a lead screw, the two lead screws are parallel, and one end, far away from the first motor, of each lead screw is rotatably connected with the lower end face of the other side of the middle supporting frame (namely a supporting bar on one side opposite to the side where the first motor is arranged); the movable tripod head comprises two supporting parts, a connecting part and a track part, the two supporting parts are of door-shaped structures, the supporting parts are respectively sleeved on the outer wall of the corresponding screw rod and are in threaded connection with the screw rod, the middle of the upper end face of each supporting part is connected with the same track part through the vertical connecting part, the track part is perpendicular to the axis of the screw rod, and the middle of the track part is provided with a sliding rail.
Preferably, the first motor is fixedly arranged on the lower end face of the middle supporting frame through a first support, and the first motor is fixedly connected with the lead screw through a coupler; the outer wall of one end of the screw, far away from the first motor, is sleeved on the rotating support, the rotating support is fixedly arranged on the lower end face of the middle supporting frame, and the screw is rotatably connected with the rotating support through a ball bearing.
Preferably, the two ends of the track part are respectively provided with a splayed opening, and the width of one end, close to the track part, of the splayed opening is smaller than that of one end, far away from the track part, of the splayed opening, so that the tool can enter and exit.
Preferably, the transmission assembly comprises a transmission bracket, a second motor, a first worm wheel, a transmission component and a driving gear; the cross section of the transmission bracket is of an n-shaped structure, and the bottom surfaces of two side plates of the transmission bracket are respectively connected with the upper end surfaces of the supporting bars corresponding to the middle supporting frame in a sliding manner; the second motor is arranged at one end of the outer side of the side plate of the transmission bracket, the output end of the second motor is connected with the first worm, a first worm wheel is arranged on the lower side of the first worm and meshed with the first worm, and the second motor is arranged on the same side of the first cross rod; the first turbine is sleeved on the first transmission shaft, and the first transmission shaft sequentially penetrates through the two side plates of the transmission bracket and is parallel to the transverse plate of the transmission bracket; the conveying members are arranged on the side surfaces of the two side plates of the transmission bracket, which are far away from one side of each other, symmetrically (namely the two conveying members are symmetrically arranged around the center line of the transmission bracket), each conveying member comprises a first ratchet mechanism, a first chain and a first conveying wheel, the first ratchet mechanism is sleeved on the outer wall of the first transmission shaft, the first conveying wheel is arranged on the outer side of the side plate of the transmission bracket, which is far away from one end of the second motor, and the first conveying wheel is connected with the first ratchet mechanism through the first chain; the outer walls of the two end parts of the first transmission shaft are respectively sleeved with a driving gear, the two driving gears are symmetrically arranged around the center line of the transmission bracket, and the first turbine is positioned between the first ratchet mechanism and the driving gear; and a rack meshed with the driving gear is fixedly arranged on the side surface of the middle supporting frame and corresponds to the driving gear.
Preferably, the lower end faces of the two side plates of the transmission support are provided with L-shaped sliding strips, the upper end faces of the support bars corresponding to the two side plates of the transmission support are provided with first sliding grooves respectively, one end of each L-shaped sliding strip is fixedly connected with the lower end face of the side plate of the transmission support, and the other end of each L-shaped sliding strip is clamped into the corresponding first sliding groove and is in sliding connection with the first sliding groove, so that relative sliding between the transmission support and the middle support is realized.
Preferably, the second motor is fixedly arranged on the side surface of the transmission bracket through a second support, and the second motor is fixedly connected with the first worm through a coupler.
Preferably, the first transmission wheel is fixedly sleeved on the outer wall of the first rotating rod, and the first rotating rod is rotatably connected with the corresponding side plate of the transmission support, so that the relative rotation of the first transmission wheel on the side plate of the transmission support is realized.
The connecting assembly comprises a second worm, a fixed support and a sliding sleeve, the second worm is arranged at one end, far away from the second motor, of the first worm, and the second worm is collinear with the central axis of the first worm; one side of the fixed support is respectively sleeved on the outer walls of the two ends of the second worm and is rotationally connected with the second worm, and the other side of the fixed support is fixedly connected with the side faces of the supporting bars of the middle supporting frame positioned on the lower side of the first cross rod, so that the second worm and the middle supporting frame are relatively fixed; the sliding sleeve is positioned between the first worm and the second worm, is in sliding connection with the first worm and is fixedly connected with the second worm.
Preferably, the one end outer wall that the second motor was kept away from to first worm just sets up a plurality of sliders respectively around its central axis, the sleeve inner wall that slides corresponds and sets up horizontal spout, the slider card is gone into and is corresponded in the horizontal spout and sliding connection to guarantee that the relative slip that can follow first worm axis direction between first worm and the sleeve that slides and the rotation of first worm can effectively transmit for the sleeve that slides.
The grinding assembly comprises a grinding support, a second ratchet mechanism, a second chain, a second transmission wheel, a second transmission shaft, a second turbine, a grinding head support and a grinding head mechanism; the polishing support is of a rectangular structure, a through hole is formed in the middle of the polishing support, and the middle of the upper end of the polishing support is fixedly connected with the lower end of the trapezoidal structure of the first cross rod; one corner of the upper end surface of the polishing support is provided with a second ratchet mechanism, the other corners of the upper end surface of the polishing support are provided with second conveying wheels, and the second ratchet mechanism is connected with the second conveying wheels through a second chain; the second ratchet mechanism is sleeved on the outer wall of the second transmission shaft, the lower end of the second transmission shaft penetrates through the polishing support, the outer wall of the lower end of the second transmission shaft is fixedly sleeved with a second turbine corresponding to the second worm, and the second turbine is meshed with the second worm; the upper end surface and the lower end surface of the polishing bracket are respectively provided with an annular chute; the grinding head supports are respectively clamped in the annular chutes on the upper end surface and the lower end surface of the grinding support and are in sliding connection with the grinding support, and the grinding head supports are fixed on the second chain through chain columns, so that the second chain rotates and the grinding head supports move along; the grinding head mechanism comprises a grinding head motor, a motor supporting plate, a compression spring and a polishing grinding head, the grinding head motor is fixedly arranged on the upper end face of the motor supporting plate, the upper end face of the grinding head support is provided with a guide post, and the motor supporting plate is sleeved on the outer wall of the guide post and is in sliding connection with the guide post; the output shaft of the grinding head motor sequentially penetrates through the motor supporting plate and the grinding head support and is positioned at the lower end of the grinding head support and fixedly connected with the polishing grinding head; and a compression spring is sleeved on the outer wall of a grinding head motor output shaft between the motor supporting plate and the grinding head support, and the compression spring is fixedly connected with the lower end face of the motor supporting plate and the upper end face of the grinding head support respectively.
Preferably, the first ratchet mechanism and the second ratchet mechanism both comprise a positioning wheel, a pawl, a shifting piece and a ratchet wheel, the positioning wheel is fixedly sleeved on the outer wall of a transmission shaft (namely a first transmission shaft or a second transmission shaft), the pawl is rotatably connected with the outer ring of the end surface of one side of the positioning wheel, the shifting piece is an elastic shifting piece, one end of the shifting piece is fixedly connected with the end of the pawl far away from the positioning wheel, and the other end of the shifting piece is connected with the surface of the positioning wheel; the cross section of the ratchet wheel is of a boss structure, a ratchet wheel hole matched with the pawl is formed in the inner surface of the ratchet wheel and corresponds to the positioning wheel, and the inner end surface of the protruding portion of the ratchet wheel is rotatably connected with the outer wall of the transmission shaft (namely the first transmission shaft or the second transmission shaft) through a ball bearing.
Preferably, the second transfer wheel is fixedly sleeved on the outer wall of the second rotating rod, and the lower end of the second rotating rod is rotatably connected with the upper end face of the polishing support, so that the relative rotation of the second transfer wheel on the upper end face of the polishing support is realized.
Preferably, the grinding head support is clamped into the annular sliding groove through the guide groove column and is in sliding connection with the annular sliding groove, so that the grinding head support slides on the grinding support and around the outer ring of the grinding support.
Preferably, the upper end of the grinding head motor is provided with a limit switch for starting the grinding head motor.
Further optimizing, the tool comprises a workpiece conveying plate, a sliding rod and a workpiece mounting opening; two ends of the bottom surface of the workpiece conveying plate are respectively provided with conveying teeth, and the conveying teeth at the two ends are respectively clamped with the upper ends of the first chains of the two side plates of the conveying support; a second sliding groove is formed in the middle of the workpiece conveying plate and is parallel to the central axis of the screw rod; the lower end of the sliding rod penetrates through the second sliding groove and is connected in the sliding rail of the movable holder in a clamping mode, the outer wall of the sliding rod is connected with the sliding rail in a sliding mode, and the upper end of the sliding rod is located on the upper side of the workpiece conveying plate and is fixedly connected with the bottom of the workpiece mounting opening.
The invention has the following technical effects:
compare with current polishing equipment, the support frame is passed through to this application, remove the subassembly, transmission assembly, coupling assembling, the cooperation of subassembly and the frock of polishing, make the polishing bistrique be chaotic at the polishing orbit on optical element surface, adopt similar random polishing orbit to polish the optical element surface promptly, avoid the orbit mar of optical element surface formation rule, thereby effectively reduce the poor area on optical element polishing surface, improve the shape of face precision and the roughness distribution on optical element surface, and then improve optical element's image quality, avoid causing the problem of laser scattering and light beam quality variation. Simultaneously, this application polishing equipment can avoid carrying on mechanical equipment polishing back, carry out secondary operation's problem again, effectively use manpower and materials sparingly, improve production efficiency, reduce the polishing cost. Moreover, the polishing equipment can realize the continuous processing process of the optical elements, thereby effectively solving the problem that batch polishing and random polishing tracks are contradictory; the equipment can ensure the flow line production of polishing the optical elements without stopping, can effectively ensure the irregularity of the polishing track formed by the optical elements, improve the surface shape precision and roughness distribution of the optical elements, meet the requirement of industrial production, and ensure the polishing efficiency and the polishing precision simultaneously.
In addition, this application polishing bistrique presents cycle's operating condition, when the polishing bistrique circulates to idle state, promptly with the work piece not produce the polishing, through increasing the frock or adopting the manual mode to carry out the interpolation of polishing agent, need not the artificial continuous polishing process that stops polishing equipment, does not influence optical element that stops repeatedly to promote the work efficiency of equipment, simplify the polishing flow, provide convenient for optical element's polishing.
Drawings
FIG. 1 is a schematic front axial view of a polishing apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a rear surface axial side structure of the polishing apparatus according to the embodiment of the present invention.
FIG. 3 is a plan view of a polishing apparatus in an embodiment of the present invention.
Fig. 4 is a side view of a polishing apparatus in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a moving head of the polishing apparatus in the embodiment of the present invention.
FIG. 6 is a schematic structural diagram of a transmission assembly of the polishing apparatus according to the embodiment of the present invention.
FIG. 7 is a schematic diagram of the structure of the grinding assembly of the polishing apparatus according to the embodiment of the present invention.
Fig. 8 is a schematic structural view of a grinding head holder of a grinding unit of a polishing apparatus according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a tool of a polishing apparatus in an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of the ratchet mechanisms (i.e., the first ratchet mechanism and the second ratchet mechanism) of the polishing apparatus according to the embodiment of the present invention.
Fig. 11 is a sectional view taken along line a-a of fig. 10.
10, a base; 20. a support frame; 21. supporting the upright post; 22. a middle support frame; 220. a first chute; 231. a support rail; 232. a first cross bar; 233. a second cross bar; 30. a moving assembly; 31. a first motor; 310. a first support; 32. a lead screw; 320. rotating the support; 33. moving the holder; 331. a support portion; 332. a connecting portion; 333. a rail portion; 3331. a slide rail; 3332. a splayed mouth; 40. a transmission assembly; 41. a delivery carriage; 410. an "L" shaped slide; 42. a second motor; 420. a second support; 43. a first worm; 44. a first turbine; 440. a first drive shaft; 45. a conveying member; 451. a first ratchet mechanism; 452. a first chain; 453. a first transfer wheel; 4530. a first rotating lever; 46. a drive gear; 460. a rack; 50. a connecting assembly; 51. a second worm; 52. fixing a bracket; 53. a slipping sleeve; 60. polishing the assembly; 61. polishing the bracket; 62. a second ratchet mechanism; 621. positioning wheels; 622. a pawl; 623. a shifting sheet; 624. a ratchet wheel; 6240. a ratchet hole; 63. a second chain; 64. a second transfer wheel; 640. a second rotating rod; 65. a second drive shaft; 66. a second turbine; 67. a grinding head support; 671. a guide groove column; 672. a guide post; 673. a chain post; 68. a grinding head mechanism; 681. a grinding head motor; 6810. a limit switch; 682. a motor support plate; 683. a compression spring; 684. polishing the grinding head; 70. assembling; 71. a workpiece transfer plate; 711. a transmission tooth; 712. a second chute; 72. a slide bar; 73. and (4) a workpiece mounting port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 11, a continuous polishing apparatus for optical elements, characterized in that: the grinding device comprises a base 10, a support frame 20, a moving assembly 30, a transmission assembly 40, a connecting assembly 50, a grinding assembly 60 and a tool 70; the supporting frame 20 is fixedly arranged on the upper end surface of the base 10 and comprises supporting upright posts 21, a middle supporting frame 22 and a top fixing frame, the supporting upright posts 21 are respectively arranged at four corners of the base 10, and the middle supporting frame 22 is arranged among the middles of the four supporting upright posts 21 (as shown in fig. 1 and 2); the top fixing frame is arranged at the top of the support upright 21 and comprises two support cross bars 231, a first cross bar 232 and a second cross bar 233, the two support cross bars 231 are parallel, two ends of the two support cross bars are respectively connected with the tops of the two corresponding support 21 uprights (as shown in fig. 1 and 2), two ends of the first cross bar 232 are connected with the tops of the two support uprights 21, the first cross bar 232 is perpendicular to the two support cross bars 231, two ends of the second cross bar 233 are respectively connected with the middle parts of the two support cross bars 231, the first cross bar 232 is parallel to the second cross bar 233, and the middle parts of the first cross bar 232 and the second cross bar 233 are both arranged to be of a downward-protruding trapezoidal structure (as shown in fig. 1 and 2); the middle supporting frame 22 is respectively provided with a moving assembly 30, a transmission assembly 40 and a connecting assembly 50, and the first cross rod 232 is provided with a polishing assembly 60; the tool 70 is respectively connected with the moving assembly 30 and the transmission assembly 40, and an optical element to be polished is arranged on the tool 70.
The moving assembly 30 comprises a first motor 31, a lead screw 32 and a moving holder 33; the number of the first motors 31 is two, they are respectively fixed on the lower end surface of one side of the middle supporting frame 22 through the first support 310 (as shown in fig. 2, the first motors 31 are all fixed on the lower end surface of the same support bar of the middle supporting frame 22 through the first support 310), and the output end of the first motor 31 is fixedly connected with the lead screw 32 through the coupler (the coupler is arranged by adopting a conventional structure in the field), the two lead screws 32 are parallel, one end of the lead screw 32 far away from the first motor is rotatably connected with the lower end surface of the other side of the middle supporting frame 22 (namely, the support bar on one side opposite to the side where the first motor 31 is arranged) through the rotating support 320, namely, the lead screw 32 is rotatably connected with the rotating support 320 through a sleeved ball bearing, and the lower end surface of the support bar of the rotating support 320 and the middle supporting frame 22 is fixedly connected (as shown in fig. 1). The moving platform 33 includes two support portions 331, a connecting portion 332 and a track portion 333, the support portions 331 are both door-shaped structures, the support portions 331 are respectively sleeved on the outer wall of the corresponding screw rod 32 and are in threaded connection with the screw rod 32 (as shown in fig. 4), the middle portions of the upper end surfaces of the two support portions 331 are respectively connected with the same track portion 333 through the vertical connecting portion 332, the track portion 333 is perpendicular to the central axis of the screw rod 32, and a sliding rail 3331 (as shown in fig. 5) is arranged in the middle portion of the track portion 333. The two ends of the rail part 333 are respectively provided with a splay-shaped opening 3332, and the width of the splay-shaped opening 3332 close to one end of the rail part 333 is smaller than that of the splay-shaped opening 3332 far away from one end of the rail part 333 (as shown in fig. 5), so that the tool 70 can enter and exit.
The transmission assembly 40 comprises a transmission bracket 41, a second motor 42, a first worm 43, a first worm wheel 44, a transmission component 45 and a driving gear 46; the cross section of the transmission bracket 41 is of an n-shaped structure, and the bottom surfaces of two side plates of the transmission bracket 41 are respectively connected with the upper end surfaces of the supporting bars corresponding to the middle supporting frame 22 in a sliding manner; that is, the lower end surfaces of the two side plates of the transmission bracket 41 are provided with "L" shaped sliding strips 410 (as shown in fig. 6), the middle supporting frame 22 and the upper end surfaces of the supporting strips corresponding to the two side plates of the transmission bracket 41 are respectively provided with first sliding grooves 220 (as shown in fig. 3), one end of the "L" shaped sliding strip 410 is fixedly connected with the lower end surface of the side plate of the transmission bracket 41, and the other end thereof is clamped into the corresponding first sliding groove 220 and is slidably connected with the first sliding groove 220, so that the relative sliding between the transmission bracket 41 and the middle supporting frame 22 is realized. The second motor 42 is fixedly arranged at one end of the outer side of the side plate of the transmission bracket 41 through a second support 420 (as shown in fig. 6), the output end of the second motor 42 is fixedly connected with the first worm 43 through a coupling (the coupling is arranged by adopting a conventional structure in the field), the first worm wheel 44 is arranged at the lower side of the first worm 43, the first worm wheel 44 is meshed with the first worm 43, and the second motor 42 is arranged at the same side of the first cross rod 232 (as shown in fig. 2); the first worm wheel 43 is sleeved on the first transmission shaft 440, and the first transmission shaft 440 sequentially penetrates through the two side plates of the transmission bracket 41, and the first transmission shaft 440 is parallel to the transverse plate of the transmission bracket 41 (as shown in fig. 6); the two sets of conveying members 45 are symmetrically arranged on the side surfaces of the two side plates of the transmission bracket 41 away from each other (i.e., the two sets of conveying members 45 are symmetrically arranged about the center line of the transmission bracket 41, as shown in fig. 6), the conveying members 45 include a first ratchet mechanism 451, a first chain 452 and a first conveying wheel 453, the first ratchet mechanism 451 is sleeved on the outer wall of the first transmission shaft 440, the first conveying wheel 453 is arranged on the outer side of the side plate of the transmission bracket 41 away from one end of the second motor 42, and the first conveying wheel 453 is connected with the first ratchet mechanism 451 through the first chain 452 (as shown in fig. 6); first transmission wheel 453 is fixedly sleeved on the outer wall of first rotating rod 4530, and first rotating rod 4530 is rotatably connected with the corresponding side plate of transmission bracket 41, so that relative rotation of first transmission wheel 453 on the side plate of transmission bracket 41 is realized. The outer walls of the two end parts of the first transmission shaft 440 are respectively sleeved with the driving gears 46, the two driving gears 46 are symmetrically arranged about the center line of the transmission bracket 41, and the first worm wheel 44 is positioned between the first ratchet mechanism 451 and the driving gears 46; a rack 460 (shown in fig. 1, 2, 3, and 4) engaged with the driving gear 46 is fixedly disposed on the side of the middle support frame 22 corresponding to the driving gear 46.
The connecting assembly 50 comprises a second worm 51, a fixed bracket 52 and a sliding sleeve 53, the second worm 51 is arranged at one end of the first worm 43 far away from the second motor 42, and the central axis of the second worm 51 and the central axis of the first worm 43 are collinear; one side of the fixed bracket 52 is respectively sleeved on the outer walls of the two ends of the second worm 51 and is rotationally connected with the second worm 51 (that is, the outer wall of the second worm 51 is rotationally connected with the fixed bracket 52 through a sleeved ball bearing), and the other side of the fixed bracket 52 is fixedly connected with the side face of the supporting bar of the middle supporting frame 22 positioned on the lower side of the first cross bar 232, so that the relative fixation between the second worm 51 and the middle supporting frame 22 is realized (as shown in fig. 2 and 4); the sliding sleeve 53 is located between the first worm 43 and the second worm 51, and the sliding sleeve 53 is connected with the first worm 43 in a sliding manner and fixedly connected with the second worm 51. The inner diameter of the sliding sleeve 53 is larger than the rod diameters of the first worm 43 and the second worm 51. The outer wall of one end of the first worm 43, which is far away from the second motor 41, is provided with a plurality of sliding blocks (preferably 5-8 sliding blocks) around the central axis of the first worm, the inner wall of the sliding sleeve 53 is correspondingly provided with horizontal sliding grooves, and the sliding blocks are clamped into the corresponding horizontal sliding grooves and are in sliding connection, so that the first worm 43 and the sliding sleeve 53 can slide relatively along the axial direction of the first worm 43, and the rotation of the first worm 43 can be effectively transmitted to the sliding sleeve 53.
The grinding assembly 60 comprises a grinding bracket 61, a second ratchet mechanism 62, a second chain 63, a second transmission wheel 64, a second transmission shaft 65, a second turbine 66, a grinding head bracket 67 and a grinding head mechanism 68; the polishing support 61 is of a rectangular structure, a through hole is formed in the middle of the polishing support 61, and the middle of the upper end of the polishing support 61 is fixedly connected with the lower end of the trapezoidal structure of the first cross rod 232 (as shown in fig. 2 and 3); a second ratchet mechanism 62 is arranged at one corner of the upper end surface of the grinding support 61, a second transmission wheel 64 is arranged at the other corners of the upper end surface of the grinding support 61, and the second ratchet mechanism 62 is connected with the second transmission wheel 64 through a second chain 63; the second transmission wheel 64 is fixedly sleeved on the outer wall of the second rotating rod 640, and the lower end of the second rotating rod 640 is rotatably connected with the upper end surface of the polishing bracket 61, so that the relative rotation of the second transmission wheel 64 on the upper end surface of the polishing bracket 61 is realized. The second ratchet mechanism 62 is sleeved on the outer wall of the second transmission shaft 65, the lower end of the second transmission shaft 65 penetrates through the grinding support 61, the outer wall of the lower end of the second transmission shaft 65 is fixedly sleeved with a second worm wheel 66 corresponding to the second worm 51, and the second worm wheel 66 is meshed with the second worm 51; the upper end surface and the lower end surface of the polishing bracket 61 are respectively provided with an annular chute; the grinding head bracket 67 is provided in plurality (as shown in fig. 7), and is respectively clamped in the annular sliding grooves of the upper and lower end surfaces of the grinding bracket 61 through the guide groove posts 671, and the guide groove posts 671 are slidably connected with the annular sliding grooves of the grinding bracket 61 (as shown in fig. 8), so that the grinding head bracket 67 slides on the grinding bracket 61 and around the outer ring of the grinding bracket 61. The grinding head bracket 67 is fixed on the second chain 63 through a chain column 673, so that the second chain 63 rotates and the grinding head bracket 67 moves along; the grinding head mechanism 68 comprises a grinding head motor 681, a motor support plate 682, a compression spring 683 and a polishing grinding head 684, wherein the grinding head motor 681 is fixedly arranged at the upper end of the motor support plate 682, guide posts 672 are arranged on the upper end surface of the grinding head bracket 67 (the number of the guide posts 672 is 2-5, each guide post 672 is parallel to each other and perpendicular to the upper end surface of the grinding head bracket 67, 2 guide posts 672 are shown in fig. 8), and the motor support plate 682 is sleeved on the outer walls of the guide posts 672 and is in sliding connection with the guide posts 672 (if necessary, a limit card can be arranged on the outer walls of the guide posts 672, so that the motor support plate 682 is prevented from being separated from the guide posts 672); an output shaft of the grinding head motor 681 sequentially penetrates through the motor supporting plate 682 and the grinding head bracket 67 and is fixedly connected with a polishing grinding head 684 at the lower end of the grinding head bracket 67; a compression spring 683 is sleeved on the outer wall of an output shaft of a grinding head motor 681 between the motor supporting plate 682 and the grinding head bracket 67, and the compression spring 683 is fixedly connected with the lower end face of the motor supporting plate 682 and the upper end face of the grinding head bracket 67 respectively; a limit switch 6810 for starting the grinding head motor 681 is provided at the upper end of the grinding head motor 681.
The first ratchet mechanism 451 and the second ratchet mechanism 62 both include a positioning wheel 621, a pawl 622, a pulling piece 623 and a ratchet 624 (fig. 10 and 11 take the second ratchet mechanism 62 as an example), the positioning wheel 621 is fixedly sleeved on the outer wall of a transmission shaft (i.e. the first transmission shaft 440 or the second transmission shaft 65, fig. 10 and 11 show the second transmission shaft 65), the pawl 622 is rotatably connected with the outer ring of one side end face of the positioning wheel 621, the pulling piece 623 is an elastic pulling piece, one end of which is fixedly connected with one end of the pawl 622 far away from the positioning wheel 621, and the other end of which is connected with the surface of the positioning wheel 621; the cross section of the ratchet wheel 624 is a boss structure (as shown in fig. 11), the inner surface of the ratchet wheel 624 and the corresponding positioning wheel 621 are provided with ratchet wheel holes 6240 (as shown in fig. 11) matched with the pawl 622, and the inner end surface of the protruding part of the ratchet wheel 624 is rotatably connected with the outer wall of the transmission shaft (i.e. the first transmission shaft 440 or the second transmission shaft 65, and the second transmission shaft 65 is shown in fig. 10 and 11) through a ball bearing; the pawls 622 and the paddle 623 are arranged in 1-7 groups, and fig. 10 shows 5 groups.
Two ends of the screw rod 32 are provided with a first limit sensor for controlling the first motor 31 to rotate reversely; two ends of the rack 460 are provided with a second limit sensor for controlling the reverse direction of the second motor 42. The first limit sensor and the second limit sensor are limit sensors commonly used in the field, and can be understood by those skilled in the art.
The tool 70 comprises a workpiece transfer plate 71, a sliding rod 72 and a workpiece mounting opening 73; two ends of the bottom surface of the workpiece conveying plate 71 are respectively provided with a conveying tooth 711, and the two end conveying teeth 711 are respectively clamped with the upper ends of the first chains 452 of the two side plates of the conveying bracket 41; the middle part of the workpiece conveying plate 71 is provided with a second chute 712, and the second chute 712 is parallel to the central axis of the screw 32; the lower end of the sliding rod 72 penetrates through the second sliding groove 712 and is clamped in the sliding rail 3331 of the mobile platform 33, the outer wall of the sliding rod 72 is slidably connected with the sliding rail 3331, and the upper end of the sliding rod 72 is located on the upper side of the workpiece transfer plate 71 and is fixedly connected with the bottom of the workpiece mounting port 73. The second runner 712 has a length less than half the length of the lead screw 32.
The working principle is as follows:
during polishing, the optical element to be polished is firstly installed in the workpiece installation opening 73, and then the tool 70 for placing the optical element to be polished is sequentially placed on the transmission assembly 40 and the moving assembly 30 (as shown in fig. 1 and fig. 2, namely, the transmission tooth 711 is engaged with the first chain 452, and the lower end of the sliding rod 72 enters the sliding rail 3331).
Then, the two first motors 31 and the second motor 42 are respectively controlled to rotate in the forward direction:
the first motor 31 rotates forward to drive the screw rod 32 to rotate, so as to drive the moving platform 33 to move along the axial direction in the screw rod 32, and since the lower end of the sliding rod 72 is clamped in the sliding rail 3331, the moving platform 33 drives the sliding rod 72 and the workpiece mounting port 73 to move in the second sliding slot 712 (here, it is considered that the workpiece mounting port 73 and the optical element to be polished move in the x-direction).
The second motor 42 rotates to drive the first worm 43 to rotate and drives the second worm 51 to rotate simultaneously through the sliding sleeve 53; the first worm 43 drives the first transmission shaft 440 to rotate through the first worm wheel 44, so as to drive the first ratchet mechanism 451 and the drive gear 46 to rotate, the first ratchet mechanism 451 drives the first chain 452 to rotate (at this time, the pawl 622 of the first ratchet mechanism 451 abuts against the ratchet hole 6240 to drive the ratchet 624 to rotate, i.e., the positioning wheel 621 rotates counterclockwise as shown in fig. 10), so as to drive the optical element to be polished to move on the first chain 452 (considered as movement in y-direction), the engagement between the drive gear 46 and the rack 460 realizes the movement of the whole transmission assembly 40 relative to the middle support frame 22, and drives the optical element to be polished to move along the following transmission assembly 40 (considered as movement in y-direction), and at this time, the movement of the optical element to be polished in y-direction is the superposition of the movement of the first chain 452 and the whole movement of the transmission assembly 40; in the whole movement process of the transmission assembly 40, because the second worm 51 is fixed on the middle supporting frame 22 through the fixing bracket 52 and the first worm 43 is in sliding connection with the sliding sleeve 53, in the movement process of the transmission assembly 40, the second worm 51 only rotates around the axis of the second worm 51 and does not move; the second worm 51 rotates to drive the second worm wheel 66 to rotate, so that the second ratchet mechanism 62 is driven to rotate through the second transmission shaft 65, the second ratchet mechanism 62 rotates to drive the second chain 63 to transmit (at this time, the pawl 622 of the second ratchet mechanism 62 abuts against the ratchet hole 6240 to drive the ratchet 624 to rotate, that is, the positioning wheel 621 rotates counterclockwise as shown in fig. 10), and the grinding head support 67 rotates around the grinding support 61 in a circulating manner around the grinding support 61; when the grinding head mechanism 68 is located in the non-trapezoidal structure section of the second cross bar 233, the limit switch 6810 at the upper end of the grinding head motor 681 is not in contact with the lower end face of the second cross bar 233, and the grinding head motor 681 does not operate; with the cyclic rotation of the grinding head bracket 67, the grinding head mechanism 68 gradually moves to the trapezoidal structure section of the second cross bar 233, the upper end of the grinding head motor 681 contacts with the trapezoidal structure and is pushed down, the motor support plate 682 moves down, the compression spring 683 compresses, the polishing grinding head 684 contacts with the surface of the optical element to be polished of the workpiece mounting opening 73, and simultaneously the limit switch 6810 is started and the polishing grinding head 684 rotates, so that the optical element to be polished on the lower side of the polishing grinding head 684 is polished.
When the movable holder 33 moves to the first limit sensor of the screw rod 32, the first motor 31 rotates reversely, and the screw rod 33 rotates reversely, so that the movable holder 33 drives the sliding rod 72 and the workpiece mounting port 73 to move in the second sliding groove 712 in the direction opposite to the direction x.
When the driving gear 46 moves to the second limit sensor of the rack 460, the second motor 42 rotates reversely, the first worm 43 and the second worm 52 rotate reversely, the first worm 43 drives the first transmission shaft 440 to rotate reversely through the first worm wheel 44, and then drives the driving gear 46 and the first ratchet mechanism 451 to rotate reversely, the driving gear 46 rotates reversely to drive the whole transmission assembly 40 to move in the reverse direction x, and the first ratchet mechanism 451 rotates reversely to not drive the first chain 452 to transmit (at this time, the pawl 622 of the first ratchet mechanism 451 does not prop against the ratchet hole 6240, the ratchet 624 does not rotate, that is, the positioning wheel 621 rotates clockwise as shown in fig. 10), that is, the movement of the optical element to be polished in the reverse direction y is the movement following the transmission assembly 40 at this time; the second worm 52 drives the second ratchet mechanism 62 to rotate reversely through the second worm wheel 66, the second ratchet mechanism 62 rotates reversely and does not drive the second chain 63 to drive (at this time, the pawl 622 of the second ratchet mechanism 62 does not abut against the ratchet hole 6240, the ratchet 624 does not rotate, i.e., the positioning wheel 621 rotates clockwise as shown in fig. 10), and at this time, the grinding head support 67 is stationary on the grinding support 61, i.e., does not rotate circularly.
When the first motor 31 and the second motor 42 rotate in the forward direction, the transmission speed of the first chain 452 is assumed to bev 1 I.e., the optical workpiece to be polished moves along the first chain 452 at a rate ofv 1 (ii) a The overall movement rate of the transmission assembly 40 isv 2 I.e. when the optical workpiece to be polished is moved in the positive y-direction relative to the ground at a rate ofv 1 +v 2 (ii) a The second chain 63 has a transmission rate ofv 3 I.e., the rate of movement of the optical workpiece to be polished relative to the polishing head 684 isv 1 +v 2 - v 3 Moving in the positive y direction (v 3 ≠v 1 By changing the gear ratio of the first and second turbines 44, 66, as will be appreciated by those skilled in the art); and the optical element to be polished is driven by the screw rod 32 and the moving holder 33 to move along the positive direction of x, so as tovIs moved at the same rate.
When the first motor 31 and the second motor 42 rotate in opposite directions, the polishing abrasive head 684 is stationary and the first chain 452 is not driven, while the optical workpiece to be polished is moving relative to the polishing abrasive head 684 at a rate of motionv 2 Moving in the opposite direction of y; and the optical element to be polished is driven by the lead screw 32 and the moving platform 33 to reverse along x direction so as tovIs moved at the same rate.
It can be seen that when the polishing device rotates in the forward direction and the reverse direction, the speed between the optical workpiece to be polished and the polishing grinding head 684 is different, and the polishing device is matched with the movement in the x direction, so that the relative movement tracks of the optical workpiece to be polished and the polishing grinding head 684 during the forward direction and the reverse direction of the polishing device are different, the polishing tracks of the optical workpiece to be polished after the forward direction and the reverse direction of the motor are irregular and disordered, and the secondary treatment after the mechanical device is polished is avoided. At the same time, the optical workpiece to be polished is advanced in the y-direction relative to the ground at a velocity ofv 1 +v 2 And the rate at the time of the back-off isv 2 And the travel of the rack 460 is fixed (i.e. the forward and backward time is equal), so that the forward travel of the optical workpiece to be polished relative to the ground is greater than the backward travel, and finally the optical workpiece to be polished is output from the right side of the apparatus shown in fig. 1 and input from the left side of the apparatus shown in fig. 1, thereby realizing continuous and uninterrupted blanking and discharging. Meanwhile, when the grinding head mechanism 68 is not positioned on the lower side of the second cross rod 233, the grinding head motor 681 does not operate, that is, the grinding head mechanism 68 is relatively idle, and at this time, polishing agents and the like can be added into the polishing grinding head 684 manually or in a feeding tool mode, so that the continuity and the continuity of the whole polishing process are ensured, and the polishing efficiency is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A continuous polishing apparatus for optical elements, characterized in that: the grinding device comprises a base (10), a support frame (20), a moving assembly (30), a transmission assembly (40), a connecting assembly (50), a grinding assembly (60) and a tool (70); the supporting frames (20) are fixedly arranged on the upper end face of the base (10) and comprise supporting upright columns (21), a middle supporting frame (22) and a top fixing frame, the supporting upright columns (21) are respectively arranged at four corners of the base (10), and the middle supporting frame (22) is arranged among the middles of the four supporting upright columns (21); the top fixing frame is arranged at the top of the support upright posts (21) and comprises two support cross rods (231), a first cross rod (232) and a second cross rod (233), the two support cross rods (231) are parallel, two ends of each support cross rod are respectively connected with the tops of the corresponding two support upright posts (21), two ends of each first cross rod (232) are connected with the tops of the two support upright posts (21), the first cross rods (232) are perpendicular to the two support cross rods (231), two ends of each second cross rod (233) are respectively connected with the middle parts of the two support cross rods (233), the first cross rods (232) are parallel to the second cross rods (233), and the middle parts of the first cross rods (232) and the second cross rods (233) are respectively of a downward convex trapezoidal structure; the middle supporting frame (22) is respectively provided with a moving assembly (30), a transmission assembly (40) and a connecting assembly (50), and the first cross rod (232) is provided with a polishing assembly (60); the tool (70) is respectively connected with the moving assembly (30) and the transmission assembly (40), and an optical element to be polished is arranged on the tool (70).
2. A continuous polishing apparatus for optical elements as set forth in claim 1, wherein: the moving assembly (30) comprises a first motor (31), a lead screw (32) and a moving cloud deck (33); the two first motors (31) are respectively arranged on the lower end face of one side of the middle supporting frame (22), the output end of each first motor (31) is fixedly connected with a lead screw (32), the two lead screws (32) are parallel, and one end, away from the first motor (31), of each lead screw (32) is rotatably connected with the lower end face of the other side of the middle supporting frame (22); remove cloud platform (33) including supporting part (331), connecting portion (332) and track portion (333), supporting part (331) are two and are door-shaped structure, and supporting part (331) cup joint respectively at the outer wall that corresponds lead screw (32) and with lead screw (32) threaded connection, two supporting part (331) up end middle part is connected and track portion (333) and the axis mutually perpendicular of lead screw (32) through vertical connecting portion (332) respectively, slide rail (3331) is seted up in track portion (333) middle part.
3. A continuous polishing apparatus for optical elements as set forth in claim 2, characterized in that: the first motor (31) is fixedly arranged on the lower end face of the middle supporting frame (22) through a first support (310), and the first motor (31) is fixedly connected with the lead screw (32) through a coupler; the outer wall of one end, far away from the first motor (31), of the lead screw (32) is sleeved on the rotating support (320), the rotating support (320) is fixedly arranged on the lower end face of the middle supporting frame (22), and the lead screw (32) is rotatably connected with the rotating support (320) through a ball bearing.
4. A continuous polishing apparatus for optical elements as set forth in claim 2, characterized in that: the two ends of the track part (333) are respectively provided with a splayed opening (3332), and the width of one end of the splayed opening (3332) close to the track part (333) is smaller than that of one end far away from the track part (333).
5. A continuous polishing apparatus for optical elements as set forth in claim 2, wherein: the transmission assembly (40) comprises a transmission bracket (41), a second motor (42), a first worm (43), a first turbine (44), a transmission component (45) and a driving gear (46); the cross section of the transmission bracket (41) is of an n-shaped structure, and the bottom surfaces of two side plates of the transmission bracket (41) are respectively in sliding connection with the upper end surfaces of the supporting bars corresponding to the middle supporting frame (22); the second motor (42) is arranged at one end of the outer side of the side plate of the transmission bracket (41), the output end of the second motor (42) is connected with the first worm (43), a first worm wheel (44) is arranged on the lower side of the first worm (43), the first worm wheel (44) is meshed with the first worm (43), and the second motor (42) is arranged on the same side of the first cross rod (232); the first turbine (44) is sleeved on the first transmission shaft (440), and the first transmission shaft (440) sequentially penetrates through the two side plates of the transmission bracket (41), and the first transmission shaft (440) is parallel to the transverse plate of the transmission bracket (41); the conveying members (45) are two groups and are respectively symmetrically arranged on the side surface of one side, away from each other, of the two side plates of the transmission bracket (41), each conveying member (45) comprises a first ratchet mechanism (451), a first chain (452) and a first conveying wheel (453), the first ratchet mechanisms (451) are sleeved on the outer wall of the first transmission shaft (440), the first conveying wheels (453) are arranged on the outer side of the side plates, away from one end of the second motor (42), of the transmission bracket (41), and the first conveying wheels (453) are connected with the first ratchet mechanisms (451) through the first chains (452); the outer walls of the two end parts of the first transmission shaft (440) are respectively sleeved with a driving gear (46), the two driving gears (46) are symmetrically arranged around the center line of the transmission bracket (41), and the first turbine (44) is positioned between the first ratchet mechanism (451) and the driving gear (46); and a rack (460) meshed with the driving gear (46) is fixedly arranged on the side surface of the middle supporting frame (22) and corresponds to the driving gear (46).
6. A continuous polishing apparatus for optical elements as set forth in claim 5, characterized in that: the second motor (42) is fixedly arranged on the side surface of the transmission bracket (41) through a second support (420), and the second motor (42) is fixedly connected with the first worm (43) through a coupler.
7. A continuous polishing apparatus for optical elements as set forth in claim 5, characterized in that: the connecting assembly (50) comprises a second worm (51), a fixed support (52) and a sliding sleeve (53), the second worm (51) is arranged at one end, away from the second motor (42), of the first worm (43), and the central axis of the second worm (51) is collinear with that of the first worm (43); one side of the fixed support (52) is respectively sleeved on the outer walls of the two ends of the second worm (51) and is rotationally connected with the second worm (51), and the other side of the fixed support (52) is fixedly connected with the side face of the supporting bar of the middle supporting frame (22) positioned on the lower side of the first cross bar (232); the sliding sleeve (53) is positioned between the first worm (43) and the second worm (51), and the sliding sleeve (53) is in sliding connection with the first worm (43) and is fixedly connected with the second worm (51).
8. A continuous polishing apparatus for optical elements as set forth in claim 7, wherein: the grinding assembly (60) comprises a grinding support (61), a second ratchet mechanism (62), a second chain (63), a second transmission wheel (64), a second transmission shaft (65), a second turbine (66), a grinding head support (67) and a grinding head mechanism (68); the polishing support (61) is of a rectangular structure, a through hole is formed in the middle of the polishing support, and the middle of the upper end of the polishing support (61) is fixedly connected with the lower end of the trapezoidal structure of the first cross rod (232); one corner of the upper end face of the grinding support (61) is provided with a second ratchet mechanism (62), the other corners are provided with second transmission wheels (64), and the second ratchet mechanism (62) is connected with the second transmission wheels (64) through a second chain (63); the second ratchet mechanism (62) is sleeved on the outer wall of the second transmission shaft (65), the lower end of the second transmission shaft (65) penetrates through the grinding support (61), the outer wall of the lower end of the second transmission shaft (65) is fixedly sleeved with a second worm wheel (66) corresponding to the second worm (51), and the second worm wheel (66) is meshed with the second worm (51); the upper end surface and the lower end surface of the polishing support (61) are respectively provided with an annular chute; the grinding head supports (67) are respectively clamped in the annular sliding grooves on the upper end face and the lower end face of the grinding support (61) and are in sliding connection with the grinding support (61), and the grinding head supports (67) are fixed on the second chain (63) through chain columns (673); the grinding head mechanism (68) comprises a grinding head motor (681), a motor supporting plate (682), a compression spring (683) and a polishing grinding head (684), wherein the grinding head motor (681) is fixedly arranged on the upper end face of the motor supporting plate (682), a guide column (672) is arranged on the upper end face of the grinding head bracket (67), and the motor supporting plate (682) is sleeved on the outer wall of the guide column (672) and is in sliding connection with the guide column (672); an output shaft of the grinding head motor (681) penetrates through the motor supporting plate (682) and the grinding head bracket (67) in sequence and is positioned at the lower end of the grinding head bracket (67) and fixedly connected with the polishing grinding head (684); compression spring (683) is cup jointed to bistrique motor (681) output shaft outer wall between motor backup pad (682) and bistrique support (67), and compression spring (683) respectively with motor backup pad (682) terminal surface under, bistrique support (67) up end fixed connection.
9. A continuous polishing apparatus for optical elements as set forth in claim 1 or 8, characterized in that: and the upper end of the grinding head motor (681) is provided with a limit switch (6810) for starting the grinding head motor (681).
10. A continuous polishing apparatus for optical elements as set forth in claim 1 or 8, characterized in that: the tool (70) comprises a workpiece conveying plate (71), a sliding rod (72) and a workpiece mounting opening (73); two ends of the bottom surface of the workpiece conveying plate (71) are respectively provided with a conveying tooth (711), and the conveying teeth (711) at the two ends are respectively clamped with the upper ends of first chains (452) of two side plates of the conveying bracket (41); a second sliding groove (712) is formed in the middle of the workpiece conveying plate (71), and the second sliding groove (712) is parallel to the central axis of the screw rod (32); the lower end of the sliding rod (72) penetrates through the second sliding groove (712) and is connected in a sliding rail (3331) of the mobile holder (33) in a clamping mode, the outer wall of the sliding rod (72) is connected with the sliding rail (3331) in a sliding mode, and the upper end of the sliding rod (72) is located on the upper side of the workpiece conveying plate (71) and is fixedly connected with the bottom of the workpiece mounting port (73).
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