CN117140203B - Magnetorheological polishing fixing device and method for lightweight optical lens - Google Patents

Magnetorheological polishing fixing device and method for lightweight optical lens Download PDF

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Publication number
CN117140203B
CN117140203B CN202311409197.XA CN202311409197A CN117140203B CN 117140203 B CN117140203 B CN 117140203B CN 202311409197 A CN202311409197 A CN 202311409197A CN 117140203 B CN117140203 B CN 117140203B
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balancing weight
groove
optical
fixing
optical lens
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CN117140203A (en
Inventor
张瀛怀
张斌智
张鑫
叶铭堃
卢峻达
李骏驰
房圣桃
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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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/005—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using a magnetic polishing agent
    • 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
    • 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
    • B24B13/0055—Positioning of lenses; Marking of lenses
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/112—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using magnetically consolidated grinding powder, moved relatively to the workpiece under the influence of pressure
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

The invention discloses a magnetorheological polishing fixing device and a fixing method for a lightweight optical lens, and belongs to the technical field of lens polishing. The fixing device comprises a balancing weight, wherein the balancing weight is provided with a first storage groove, and the first storage groove is used for sequentially storing the supporting seat, the connecting shaft and the lens body of the optical lens; the bottom of the first storage groove is provided with a second fixing hole, and the second fixing hole can be used for the first fixing piece to enter the first storage groove and be connected and fixed with the first fixing hole on the supporting seat; the groove wall of the first storage groove can be abutted against the side wall of the mirror body, which is arranged in a way of extending away from the optical surface; the top surface of balancing weight is formed with the transition face that radius of curvature is unanimous with the optical surface around first storage tank, and the transition face can splice each other with the optical surface. The invention has the advantages that the weight of the optical lens can be compensated and the irregular structure of the optical lens can be filled, so that the optical lens is easier to center and fix, thereby meeting the tooling requirement of ultra-precise polishing.

Description

Magnetorheological polishing fixing device and method for lightweight optical lens
Technical Field
The invention relates to the technical field of lens polishing, in particular to a magnetorheological polishing fixing device and a magnetorheological polishing fixing method for a lightweight optical lens.
Background
With the rapid development of the fields of domestic extreme ultraviolet optics, high-precision optical etalons, deep space exploration, aerospace and the like, the requirements on the surface quality and the light weight of the optical lenses are higher and higher.
In order to obtain an optical lens with ultra-high surface-shape accuracy, it is necessary to perform ultra-precise polishing treatment on the surface of the optical lens. The magneto-rheological polishing technology is a deterministic polishing technology, which utilizes the rheological property of magneto-rheological fluid in a magnetic field, realizes the material removal of the surface of an optical lens by the shearing force of abrasive particles in the magneto-rheological fluid, and has the advantages of stable removal function, high polishing efficiency, difficult surface and subsurface damage generation, and the like. Therefore, the magnetorheological polishing technology has become a common processing method for high-precision optical lenses. In the magnetorheological polishing of optical lenses, the accuracy of the target surface shape of the optical lens to be polished is usually around 1/50 λ (λ=632.8 nm), which requires the centering accuracy of the lens to be sufficiently accurate.
However, in order to meet the requirement of light weight, the support structure of the lens body is usually disposed at the back of the optical surface, so that the light weight optical lens has the characteristics of light weight, special and various structures, and the like.
In view of the above problems, no effective technical solution is currently available.
Disclosure of Invention
The invention aims to provide a magnetorheological polishing fixing device and a fixing method for a lightweight optical lens, which can compensate the weight of the optical lens and fill irregular structures of the optical lens by embedding the optical lens in a balancing weight, so that the optical lens is easier to center and fix, and the requirement of an ultra-precise polishing tool is met.
The invention provides a magnetorheological polishing fixing device for a lightweight optical lens, which comprises a balancing weight, wherein the balancing weight is provided with a first storage groove, and the first storage groove is used for sequentially storing a supporting seat, a connecting shaft and a lens body of the optical lens; the bottom of the first storage groove is provided with a second fixing hole, and the second fixing hole can enable the first fixing piece to enter the first storage groove so as to enable the first fixing piece to be fixedly connected with the first fixing hole on the supporting seat; the groove wall of the first storage groove can be abutted against the side wall of the mirror body, which is arranged in a way of extending away from the optical surface; the top surface of balancing weight is formed with the transition face around first storage tank, the transition face can with the optical face concatenation each other, just the radius of curvature of transition face with the radius of curvature of optical face is unanimous.
According to the magnetorheological polishing fixing device for the lightweight optical lens, the lightweight optical lens formed by the lens body, the connecting shaft and the supporting seat is inlaid on the balancing weight through the first accommodating groove, so that the balancing weight and the optical lens are connected to form a whole, and the weight of the optical lens is compensated and the irregular structure of the optical lens is filled. When the optical surface is required to be polished and fixed, the lens can be fixed by clamping the balancing weight, the lens is conveniently centered, and the centering precision of the optical lens is improved.
The cell wall and the lateral wall butt in first storage tank, when polishing the optical surface, the mirror body can be through the lateral wall with the stress transmission that receives to on the cell wall in first storage tank, take place to take place the condition of deformation after the reduction mirror body atress, help guaranteeing the polishing stability, and then improve the polishing precision of optical surface.
The transition face and the optical face can splice each other, and the curvature radius of transition face is unanimous with the curvature radius of optical face, and when the optical lens inlayed on the balancing weight, the edge of optical lens was accomodate in first storage tank, and the edge that the optical lens can be avoided to the polishing wheel carries out complete polishing to the optical face, and the polishing wheel only polishes the optical face and can not polish the edge of optical lens, and then reduces the optical lens polishing and lead to the edge to produce the condition emergence of the low limit of similar chamfer, helps guaranteeing the holistic light performance of optical face. Meanwhile, when the magnetorheological polishing technology is adopted to polish the optical surface with high precision, the magnetorheological fluid can be scraped off from the surface of the polishing wheel by polishing the edge, so that the edge of the optical lens is contained in the first containing groove, and the magnetorheological fluid can be guaranteed to circulate normally on the surface of the polishing wheel.
Further, the balancing weight is further provided with a second storage groove, the second storage groove and the first storage groove are formed in two opposite ends of the balancing weight, the second fixing hole is communicated with the first storage groove and the second storage groove, and the second storage groove is used for storing the first fixing piece.
Adopt above-mentioned technical scheme, accomodate the groove through setting up the second and accomodate first mounting, can guarantee that the balancing weight is placed in the plane time the bottom is leveled and is placed, conveniently carry out the centre gripping to the balancing weight fixedly.
Further, the sagittal height of the optical surface isThe depth of the first containing groove is +.>The length of the connecting shaft is +.>The thickness of the supporting seat is +.>The thickness of the mirror body is ∈>，/>=/>+/>+/>-/>。
Further, a supporting ring is further extended on the groove wall of the first storage groove, and the setting height of the supporting ring in the first storage groove isThe length of the side wall is +.>，/>=/>-/>So that the support ring can support the side wall.
By adopting the technical scheme, the support ring is arranged, so that the side wall can be supported, the stress born by the connecting shaft during polishing is reduced, the optical lens can bear larger polishing pressure, and the polishing precision of the optical surface is improved.
Further, the number of the second fixing holes is a plurality of, and the second fixing holes are circumferentially arranged in the first containing groove at intervals.
Further, the tank bottom of the first storage tank is also provided with a positioning clamping groove, the positioning clamping groove is used for inserting and positioning the supporting seat, the second fixing hole is formed in the positioning clamping groove, the shape of the positioning clamping groove is matched with that of the supporting seat, so that the second fixing hole is aligned with the first fixing hole when the supporting seat is inserted into the positioning clamping groove.
By adopting the technical scheme, through setting up the location draw-in groove that supplies the supporting seat to insert the location on the balancing weight, when the supporting seat inserts the location draw-in groove, first fixed orifices and second fixed orifices automatic alignment make things convenient for first mounting to pass second fixed orifices and first fixed orifices in proper order, help improving the installation effectiveness of optical lens and balancing weight.
Further, the device further comprises a workbench and a plurality of clamping pieces, wherein the clamping pieces are circumferentially arranged on the workbench at intervals, and the clamping pieces can move towards the balancing weights so as to clamp the balancing weights on the workbench.
By adopting the technical scheme, when the optical lens is inlaid in the balancing weight, the central line of the optical axis of the lens body is coincident with the axis of the balancing weight, so that the centering of the balancing weight and the optical lens is realized; the balancing weight is placed near the circle center of the surface of the workbench, the balancing weight is aligned with the circle center of the workbench by the aid of the dial indicator, the balancing weight is fixed on the workbench by the aid of the clamping pieces, the optical axis center line of the lens and the axis of the workbench are overlapped, the lens can be fixed and centered on the workbench rapidly, and centering accuracy of the lens is improved.
Further, one end of the clamping piece, which faces the balancing weight, is provided with an arc end face, and the curvature radius of the arc end face is equal to the curvature radius of the side face of the balancing weight, so that the arc end face can be attached to the side face of the balancing weight.
By adopting the technical scheme, through setting up the circular arc terminal surface the same with balancing weight side curvature radius on the clamping piece, when a plurality of clamping pieces laminate the centre gripping simultaneously to the balancing weight, the optical axis central line of lens coincides mutually with the axis of workstation, helps improving the centering efficiency of lens on the workstation.
In a second aspect, the invention provides a method for fixing a magnetorheological polishing fixing device for a lightweight optical lens, which comprises the following steps:
step 1: the optical lens formed by the supporting seat, the connecting shaft and the lens body is inlaid and fixed in the first accommodating groove of the balancing weight, when the optical lens is fixed in the first accommodating groove, the optical surface and the transition surface are spliced with each other, and the curvature radius of the transition surface is consistent with that of the optical surface;
step 2: placing the balancing weight on a workbench, abutting the dial indicator probe on the side wall of the balancing weight, adjusting the value of the dial indicator to be zero, rotating the workbench for one circle, and observing the maximum change value of the dial indicator;
step 2.1: if the maximum variation value of the dial indicator is smaller than or equal to a preset value, driving the clamping pieces to move towards the balancing weight to be abutted against the balancing weight, and finishing the axial alignment of the balancing weight and the workbench;
step 2.2: if the maximum change value of the dial indicator is larger than the preset value, adjusting the position of the balancing weight on the workbench, and repeating the step 2;
step 3: the optical surface is polished by a magnetorheological polishing wheel.
Further, the moving track of the magnetorheological polishing wheel avoids the edge of the balancing weight so as to ensure the normal circulation of magnetorheological fluid.
Therefore, the light-weight optical lens formed by the lens body, the connecting shaft and the supporting seat is inlaid on the balancing weight through the first accommodating groove, so that the balancing weight and the optical lens are connected to form a whole, and the weight of the optical lens is compensated and the irregular structure of the optical lens is filled. When the optical surface is required to be polished and fixed, the lens can be fixed by clamping the balancing weight, the lens is conveniently centered, and the centering precision of the optical lens is improved.
The cell wall and the lateral wall butt in first storage tank, when polishing the optical surface, the mirror body can be through the lateral wall with the stress transmission that receives to on the cell wall in first storage tank, take place to take place the condition of deformation after the reduction mirror body atress, help guaranteeing the polishing stability, and then improve the polishing precision of optical surface.
The transition face and the optical face can splice each other, and the curvature radius of transition face is unanimous with the curvature radius of optical face, and when the optical lens inlayed on the balancing weight, the edge of optical lens was accomodate in first storage tank, and the edge that the optical lens can be avoided to the polishing wheel carries out complete polishing to the optical face, and the polishing wheel only polishes the optical face and can not polish the edge of optical lens, and then reduces the optical lens polishing and lead to the edge to produce the condition emergence of the low limit of similar chamfer, helps guaranteeing the holistic light performance of optical face. Meanwhile, when the magnetorheological polishing technology is adopted to polish the optical surface with high precision, the magnetorheological fluid can be scraped off from the surface of the polishing wheel by polishing the edge, so that the edge of the optical lens is contained in the first containing groove, and the magnetorheological fluid can be guaranteed to circulate normally on the surface of the polishing wheel.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objects and other advantages of the present application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
Fig. 1 is an exploded schematic view of a magnetorheological polishing fixing device for a lightweight optical lens according to the present invention.
Fig. 2 is an exploded view of the magnetorheological polishing fixture apparatus of the lightweight optical lens of fig. 1 from another perspective.
Fig. 3 is an assembled schematic view of the magnetorheological polishing fixture apparatus of the lightweight optical lens of fig. 1.
Fig. 4 is a schematic cross-sectional view of the magnetorheological polishing fixture apparatus of the lightweight optical lens of fig. 3.
Fig. 5 is an enlarged schematic view of the optical lens and the weight in fig. 4.
FIG. 6 is an exploded view of another embodiment of a magnetorheological polishing fixture apparatus for the lightweight optical lens of FIG. 1.
FIG. 7 is a schematic sectional view of an assembly of the magnetorheological polishing fixture apparatus of the lightweight optical lens of FIG. 6.
Fig. 8 is an enlarged schematic view of the optical lens and the weight in fig. 7.
FIG. 9 is an assembly schematic of another embodiment of the magnetorheological polishing fixture apparatus of the lightweight optical lens of FIG. 3.
In the accompanying drawings: 100. a mirror body; 110. an optical surface; 120. a sidewall; 200. a connecting shaft; 300. a support base; 310. a first fixing hole; 400. balancing weight; 410. a first storage groove; 411. a second fixing hole; 420. a transition surface; 430. positioning clamping grooves; 440. a support ring; 450. a second storage groove; 510. a first fixing member; 520. a second fixing member; 600. a work table; 610. a clamping member; 611. a slit hole; 612. an arc end surface; 620. a third fixing hole; 700. polishing wheel.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.
The invention discloses a magnetorheological polishing fixing device for a lightweight optical lens, which is mainly used as a reflector in a space remote sensor, and is mainly used for solving the problems of difficult centering and easy deflection in clamping caused by the characteristics of light weight, special and various structures and the like of the conventional lightweight optical lens. According to the magnetorheological polishing fixing device for the lightweight optical lens, the optical lens is inlaid in the balancing weight, so that the weight of the optical lens can be compensated, the irregular structure of the optical lens can be filled, the optical lens is easier to center and fix, and the tooling requirement of ultra-precise polishing is met.
Referring to fig. 1 and 2, the optical lens comprises a lens body 100, a connecting shaft 200 and a supporting seat 300, wherein the lens body 100 is provided with an optical surface 110, and the edge of the lens body 100 extends away from the optical surface 110 and is provided with a side wall 120; the support base 300 is arranged on one side of the mirror body 100, which is opposite to the optical surface 110, and the support base 300 is provided with a first fixing hole 310; the connection shaft 200 is used to connect the mirror body 100 and the support base 300.
Referring to fig. 1, 2, 3, and 4, in one embodiment, the fixing device includes: the balancing weight 400, the balancing weight 400 is provided with a first accommodating groove 410, and the first accommodating groove 410 is used for accommodating the supporting seat 300, the connecting shaft 200 and the lens body 100 of the optical lens in sequence; the bottom of the first receiving slot 410 is provided with a second fixing hole 411, and the second fixing hole 411 can allow the first fixing piece 510 to enter the first receiving slot 410, so that the first fixing piece 510 is fixedly connected with the first fixing hole 310 on the supporting seat 300; the groove wall of the first accommodating groove 410 can be abutted against the side wall 120 of the lens body 100 extending away from the optical surface 110; the top surface of the balancing weight 400 is formed with a transition surface 420 around the first receiving groove 410, the transition surface 420 can be spliced with the optical surface 110, and the curvature radius of the transition surface 420 is consistent with that of the optical surface 110.
As can be seen from the above, in the magnetorheological polishing fixing device for lightweight optical lenses according to the present invention, the lightweight optical lenses comprising the lens body 100, the connecting shaft 200 and the supporting base 300 are embedded on the weight block 400 through the first receiving groove 410, so that the weight block 400 and the optical lenses are connected to form a whole, thereby compensating the weight of the optical lenses and filling the irregular structure of the optical lenses. When the optical surface 110 needs to be polished and fixed, the lens can be fixed by clamping the balancing weight 400, so that the lens is conveniently centered, and the centering precision of the optical lens is improved.
The groove wall of the first accommodating groove 410 is abutted against the side wall 120, when the optical surface 110 is polished, the mirror body 100 can transmit the received stress to the groove wall of the first accommodating groove 410 through the side wall 120, so that the deformation of the mirror body 100 after being stressed is reduced, the polishing stability is guaranteed, and the polishing precision of the optical surface 110 is improved.
The transition surface 420 and the optical surface 110 can be spliced, the curvature radius of the transition surface 420 is consistent with the curvature radius of the optical surface 110, when the optical lens is inlaid on the balancing weight 400, the edge of the optical lens is accommodated in the first accommodating groove 410, the polishing wheel 700 can avoid the edge of the optical lens to completely polish the optical surface 110, and the polishing wheel 700 only polishes the optical surface 110 without polishing the edge of the optical lens, so that the occurrence of the condition that the edge generates a chamfer-like low edge due to the polishing of the optical lens is reduced, and the whole light performance of the optical surface 110 is guaranteed. Meanwhile, when the magnetorheological polishing technology is adopted to polish the optical surface with high precision, the magnetorheological fluid is scraped off from the surface of the polishing wheel 700 by polishing the edge, so that the edge of the optical lens is contained in the first containing groove 410, and the magnetorheological fluid is further guaranteed to circulate normally on the surface of the polishing wheel 700.
In one embodiment, the balancing weight 400 is further provided with a second accommodating groove 450, the second accommodating groove 450 and the first accommodating groove 410 are arranged at opposite ends of the balancing weight 400, the second fixing hole 411 is communicated with the first accommodating groove 410 and the second accommodating groove 450, and the second accommodating groove 450 is used for accommodating the first fixing member 510.
By adopting the above technical scheme, the second storage groove 450 is arranged to store the first fixing piece 510, so that the bottom of the balancing weight 400 can be ensured to be placed flatly when being placed on a plane, and the balancing weight 400 can be clamped and fixed conveniently.
Referring to FIG. 5, in one embodiment, the optical surface 110 has a sagittal height ofThe depth of the first receiving groove 410 is +.>The length of the connection shaft 200 is +.>The thickness of the supporting seat 300 is +.>The thickness of the mirror body 100 is +.>，/>=/>+/>+/>-/>。
Referring to fig. 6, 7 and 8, in one embodiment, a supporting ring 440 is further extended on the wall of the first receiving groove 410, and the supporting ring 440 is disposed at a height within the first receiving groove 410The length of the side wall 120 is +.>The depth of the first receiving groove 410 is +.>，/>=/>-/>So that the support ring 440 can support the sidewall 120.
By adopting the above technical scheme, the side wall 120 can be supported by the support ring 440, so that the stress on the connecting shaft 200 during polishing is reduced, the optical lens can bear larger polishing pressure, and the polishing precision of the optical surface 110 is improved.
In one embodiment, the number of the second fixing holes 411 is plural, and the plurality of second fixing holes 411 are circumferentially spaced in the first receiving slot 410. Specifically, the supporting seat 300 may be a triangular column, one end of the connecting shaft 200 is disposed on a central line of the supporting seat 300, the other end of the connecting shaft 200 is disposed on a central line of an optical axis of the lens body 100, the number of the first fixing holes 310 is three, the three first fixing holes 310 are circumferentially spaced around the connecting shaft 200, the number of the second fixing holes 411 is consistent with the number of the first fixing holes 310, and the second fixing holes 411 can be aligned with the first fixing holes 310.
In one embodiment, the bottom of the first receiving slot 410 is further provided with a positioning slot 430, the positioning slot 430 is used for inserting and positioning the support base 300, the second fixing hole 411 is disposed in the positioning slot 430, and the shape of the positioning slot 430 is matched with the shape of the support base 300, so that when the support base 300 is inserted into the positioning slot 430, the second fixing hole 411 is aligned with the first fixing hole 310.
By adopting the above technical scheme, through setting up the location draw-in groove 430 that supplies supporting seat 300 to insert the location on balancing weight 400, when the supporting seat inserts location draw-in groove 430, first fixed orifices 310 and second fixed orifices 411 self-align, make things convenient for first mounting 510 to pass second fixed orifices 411 and first fixed orifices 310 in proper order, help improving the installation effectiveness of optical lens piece and balancing weight 400.
Referring to fig. 9, in one embodiment, the apparatus further includes a table 600 and a plurality of clamping members 610, wherein the plurality of clamping members 610 are circumferentially spaced apart on the table 600, and the plurality of clamping members 610 are capable of moving toward the balancing weight 400 to clamp the balancing weight 400 to the table 600.
By adopting the technical scheme, when the optical lens is inlaid in the balancing weight 400, the optical axis center line of the lens body 100 is coincident with the axis of the balancing weight 400, so that the centering of the balancing weight 400 and the optical lens is realized; the balancing weight 400 is placed near the circle center of the surface of the workbench 600, the balancing weight 400 is aligned with the circle center of the workbench 600 by utilizing the dial indicator, the balancing weight 400 is fixed on the workbench 600 by utilizing the clamping pieces 610, the coincidence of the optical axis center line of the lens and the axis of the workbench 600 can be realized, the fixation and centering of the lens on the workbench 600 can be realized quickly, and the centering precision of the lens is improved.
In one embodiment, the end of the clamping member 610 facing the balancing weight 400 is provided with a circular arc end surface 612, and the radius of curvature of the circular arc end surface 612 is equal to the radius of curvature of the side surface of the balancing weight 400, so that the circular arc end surface 612 can be attached to the side surface of the balancing weight 400.
By adopting the above technical scheme, through setting up the circular arc terminal surface 612 the same with balancing weight 400 side radius of curvature on clamping piece 610, when a plurality of clamping pieces 610 laminate the centre of curvature to balancing weight 400 simultaneously, the optical axis central line of lens coincides with the axis of workstation 600, helps improving the centering efficiency of lens on workstation 600.
In one embodiment, the workbench 600 further comprises a second fixing member 520, a third fixing hole 620 is formed on the workbench 600, a strip hole 611 is formed on the clamping member 610, and the second fixing member 520 can be in threaded connection with the third fixing hole 620 through the strip hole 611 so as to fix the clamping member 610 on the workbench 600
In one embodiment, the invention further provides a fixing method of the magnetorheological polishing fixing device of the lightweight optical lens, which comprises the following steps:
step 1: the optical lens formed by the supporting seat 300, the connecting shaft 200 and the lens body 100 is inlaid and fixed in the first accommodating groove 410 of the balancing weight 400, when the optical lens is fixed in the first accommodating groove 410, the optical surface 110 and the transition surface 420 are spliced with each other, and the curvature radius of the transition surface 420 is consistent with that of the optical surface 110;
step 2: placing the balancing weight 400 on the workbench 600, abutting the dial indicator probe on the side wall of the balancing weight 400, adjusting the dial indicator value to be zero, rotating the workbench 600 for one circle, and observing the maximum change value of the dial indicator;
step 2.1: if the maximum variation value of the dial indicator is smaller than or equal to the preset value, the clamping pieces 610 are driven to move towards the balancing weight 400 to be abutted against the balancing weight 400, so that the axial alignment of the balancing weight 400 and the workbench 600 is completed;
step 2.2: if the maximum variation value of the dial indicator is greater than the preset value, the position of the balancing weight 400 on the workbench 600 is adjusted, and the step 2 is repeated;
step 3: the optical surface 110 is polished by a magnetorheological polishing wheel 700.
In one embodiment, the track of movement of the magnetorheological polishing wheel 700 avoids the edge of the weight 400 to ensure proper circulation of the magnetorheological fluid.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims (7)

1. The magnetorheological polishing fixing device for the lightweight optical lens comprises a balancing weight (400), and is characterized in that the balancing weight (400) is provided with a first storage groove (410), and the first storage groove (410) is used for sequentially storing a supporting seat (300), a connecting shaft (200) and a lens body (100) of the optical lens; the bottom of the first storage groove (410) is provided with a second fixing hole (411), and the second fixing hole (411) can enable a first fixing piece (510) to enter the first storage groove (410) so that the first fixing piece (510) is fixedly connected with the first fixing hole (310) on the supporting seat (300); the groove wall of the first accommodating groove (410) can be abutted with a side wall (120) which is arranged on the mirror body (100) in a manner of extending away from the optical surface (110); the top surface of the balancing weight (400) surrounds the first storage groove (410) to form a transition surface (420), the transition surface (420) can be spliced with the optical surface (110), and the curvature radius of the transition surface (420) is consistent with that of the optical surface (110); the balancing weight (400) is further provided with a second storage groove (450), the second storage groove (450) and the first storage groove (410) are arranged at two opposite ends of the balancing weight (400), the second fixing hole (411) is communicated with the first storage groove (410) and the second storage groove (450), and the second storage groove (450) is used for storing the first fixing piece (510); the bottom of the first storage groove (410) is also provided with a positioning clamping groove (430), the positioning clamping groove (430) is used for inserting and positioning the supporting seat (300), the second fixing hole (411) is formed in the positioning clamping groove (430), the shape of the positioning clamping groove (430) is matched with the shape of the supporting seat (300), and when the supporting seat (300) is inserted into the positioning clamping groove (430), the second fixing hole (411) is aligned to the first fixing hole (310); still include workstation (600) and a plurality of clamping piece (610), a plurality of clamping piece (610) circumference interval set up in on workstation (600), and a plurality of clamping piece (610) can be oriented balancing weight (400) removal, so that will balancing weight (400) centre gripping in on workstation (600).
2. Magnetorheological polishing fixture according to claim 1, characterized in that the optical surface (110) has a sagittal height ofThe first receiving groove (410) has a depth of +.>The length of the connecting shaft (200) is +.>The thickness of the supporting seat (300) is +.>The thickness of the mirror body (100) is +.>，/>。
3. The magnetorheological polishing fixing apparatus for light-weight optical lenses according to claim 2, wherein the groove wall of the first receiving groove (410) is further provided with a supporting ring (440) in an extending manner, and the supporting ring (440) has a height of being arranged in the first receiving groove (410)The length of the side wall (120) is +.>，/>So that the support ring (440) can support the side wall (120).
4. The magnetorheological polishing fixing apparatus for lightweight optical lenses according to claim 1, wherein the number of the second fixing holes (411) is plural, and the second fixing holes (411) are circumferentially spaced in the first receiving groove (410).
5. The magnetorheological polishing fixing device for the lightweight optical lens according to claim 1, wherein one end of the clamping member (610) facing the balancing weight (400) is provided with an arc end surface (612), and the radius of curvature of the arc end surface (612) is equal to the radius of curvature of the side surface of the balancing weight (400), so that the arc end surface (612) can be attached to the side surface of the balancing weight (400).
6. A method of fixing a magnetorheological finishing fixture for lightweight optical lenses of claim 1, comprising the steps of:
step 1: the optical lens formed by the supporting seat (300), the connecting shaft (200) and the lens body (100) is inlaid and fixed in a first accommodating groove (410) of the balancing weight (400), when the optical lens is fixed in the first accommodating groove (410), the optical surface (110) and the transition surface (420) are spliced with each other, and the curvature radius of the transition surface (420) is consistent with that of the optical surface (110);
step 2: placing the balancing weight (400) on the workbench (600), abutting the dial indicator probe on the side wall of the balancing weight (400), adjusting the value of the dial indicator to be zero, rotating the workbench (600) for one circle, and observing the maximum change value of the dial indicator;
step 2.1: if the maximum variation value of the dial indicator is smaller than or equal to a preset value, driving the clamping pieces (610) to move towards the balancing weight (400) to be abutted against the balancing weight (400) so as to finish the axial alignment of the balancing weight (400) and the workbench (600);
step 2.2: if the maximum change value of the dial indicator is larger than a preset value, the position of the balancing weight (400) on the workbench (600) is adjusted, and the step (2) is repeated;
step 3: the optical surface (110) is polished by a magnetorheological polishing wheel (700).
7. The method for fixing a magnetorheological polishing fixing apparatus for lightweight optical lenses according to claim 6, wherein the moving track of the magnetorheological polishing wheel (700) avoids the edge of the balancing weight (400) to ensure the normal circulation of the magnetorheological fluid.
CN202311409197.XA 2023-10-27 2023-10-27 Magnetorheological polishing fixing device and method for lightweight optical lens Active CN117140203B (en)

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GB875456A (en) * 1958-08-11 1961-08-23 Optische Ind De Oude Delft Nv Improvements relating to the mounting of optical elements
US5357716A (en) * 1988-10-20 1994-10-25 Olympus Optical Company Limited Holding device for holding optical element to be ground
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DE10249251A1 (en) * 2002-10-23 2004-05-13 Loh Optikmaschinen Ag Membrane for workpiece holder, especially for polishing lenses, has front section with reinforcing part for its middle region
CN102179738A (en) * 2011-03-29 2011-09-14 中国科学院光电技术研究所 Polishing device for eliminating coining effect of lightweight reflecting mirror
CN108036758A (en) * 2017-11-17 2018-05-15 北京理工大学 One kind is suitable for the detection of aero-engine casing concentricity and method of adjustment
CN214024973U (en) * 2020-12-18 2021-08-24 南阳市恒欣光学有限公司 Split body for polishing
CN115741342A (en) * 2022-11-24 2023-03-07 鹰潭嘉崎光学科技有限公司 Fine grinding and polishing device for optical lens
CN116394113A (en) * 2023-01-09 2023-07-07 大连理工大学 Shearing thickening polishing device and method for optical lens
CN219485215U (en) * 2022-12-23 2023-08-08 任丘市中苏镜业有限公司 Device is thrown to automobile rearview mirror lens face
CN219542420U (en) * 2022-11-29 2023-08-18 中国建筑材料科学研究总院有限公司 Single-point diamond lathe fixture and single-point diamond lathe for optical lens processing

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875456A (en) * 1958-08-11 1961-08-23 Optische Ind De Oude Delft Nv Improvements relating to the mounting of optical elements
US5357716A (en) * 1988-10-20 1994-10-25 Olympus Optical Company Limited Holding device for holding optical element to be ground
CA2205292A1 (en) * 1996-05-17 1997-11-17 Optotech Optikmaschinen Gmbh Support for optical lenses and method for polishing lenses
DE10057228A1 (en) * 2000-11-18 2002-05-29 Optotech Optikmasch Gmbh Grinding optical lenses, involves only one changeable lens clamping device to hold lens fixed during processing with cup-shaped tools, enable gymbal movement for shaping tools
DE10249251A1 (en) * 2002-10-23 2004-05-13 Loh Optikmaschinen Ag Membrane for workpiece holder, especially for polishing lenses, has front section with reinforcing part for its middle region
CN102179738A (en) * 2011-03-29 2011-09-14 中国科学院光电技术研究所 Polishing device for eliminating coining effect of lightweight reflecting mirror
CN108036758A (en) * 2017-11-17 2018-05-15 北京理工大学 One kind is suitable for the detection of aero-engine casing concentricity and method of adjustment
CN214024973U (en) * 2020-12-18 2021-08-24 南阳市恒欣光学有限公司 Split body for polishing
CN115741342A (en) * 2022-11-24 2023-03-07 鹰潭嘉崎光学科技有限公司 Fine grinding and polishing device for optical lens
CN219542420U (en) * 2022-11-29 2023-08-18 中国建筑材料科学研究总院有限公司 Single-point diamond lathe fixture and single-point diamond lathe for optical lens processing
CN219485215U (en) * 2022-12-23 2023-08-08 任丘市中苏镜业有限公司 Device is thrown to automobile rearview mirror lens face
CN116394113A (en) * 2023-01-09 2023-07-07 大连理工大学 Shearing thickening polishing device and method for optical lens

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