CN111390700B

CN111390700B - Polishing and grinding integrated machine for optical elements

Info

Publication number: CN111390700B
Application number: CN201911274194.3A
Authority: CN
Inventors: 李志斌; 黄春韶; 江余岳; 傅正勇; 王咏辉
Original assignee: Zhejiang Hangji Co ltd
Current assignee: Zhejiang Hangji Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2021-03-30
Anticipated expiration: 2039-12-12
Also published as: CN111390700A

Abstract

The invention discloses a polishing and grinding integrated machine of an optical element, and relates to the technical field of optical element processing devices; the base is connected on the base in a rotating mode and is used for placing an optical element workbench, a motor used for driving the workbench to rotate is arranged on the base, X guide rails are arranged on two opposite sides of the workbench, a stand column is connected on the X guide rails in a sliding mode, an X driving mechanism used for driving the stand column to move along the axis of the X guide rails is arranged on the X guide rails, a vertical Y guide rail perpendicular to the X guide rails is arranged between the X guide rails, two ends of the Y guide rails are fixedly connected to the top ends of the corresponding stand columns, a first sliding block and a second sliding block are connected on the Y guide rails in a sliding mode, a Y driving mechanism used for driving the first sliding block and the second sliding block to move along the axis of the Y guide rails is arranged on the Y guide rails, a polishing mechanism is arranged on the first sliding block, a. The invention has high processing efficiency, stable fixed optical element and high fixed precision.

Description

Polishing and grinding integrated machine for optical elements

Technical Field

The invention belongs to the technical field of optical element processing devices, and particularly relates to an optical element polishing and grinding integrated machine.

Background

At present, optical elements often need to be ground and polished, and the grinding and polishing are processed in two devices; however, in the case of a large-sized optical element, it is very troublesome to carry the optical element between different apparatuses, and the processing efficiency is greatly lowered.

Disclosure of Invention

The invention aims to overcome the defect of low processing efficiency in the prior art, and provides an integrated polishing and grinding machine for optical elements, which is high in processing efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

an integrated machine for polishing and grinding optical elements comprises a base, a workbench which is rotationally connected with the base and used for placing the optical elements, and a motor used for driving the workbench to rotate, the base is provided with X guide rails on two opposite sides of the workbench, the X guide rails are connected with upright posts in a sliding way, an X driving mechanism for driving the upright post to move along the axis of the X guide rail is arranged on the X guide rail, a Y guide rail vertical to the X guide rail is arranged between the X guide rails, two ends of the Y guide rail are fixedly connected with the top ends of the corresponding upright posts, the Y guide rail is connected with a first slide block and a second slide block in a sliding way, the Y guide rail is provided with a Y driving mechanism for driving the first sliding block and the second sliding block to move along the axis of the Y guide rail, the polishing mechanism and the first cylinder used for lifting the polishing mechanism are arranged on the first sliding block, and the grinding mechanism and the second cylinder used for lifting the grinding mechanism are arranged on the second sliding block. The polishing mechanism is used for polishing the optical element, the grinding mechanism is used for grinding the optical element, the workbench rotates during processing, the X driving mechanism and the Y driving mechanism can change the plane positions of the polishing mechanism and the grinding mechanism, and the first air cylinder and the second air cylinder respectively change the vertical positions of the polishing mechanism and the grinding mechanism.

Preferably, the X driving mechanism comprises an X lead screw which penetrates through the bottom end of the upright post and is in threaded connection with the upright post, and a first servo motor which is used for rotating the X lead screw. The structure is simple.

Preferably, the Y driving mechanism includes a first rotary table rotatably connected to the first slider, a second rotary table rotatably connected to the second slider, a Y lead screw passing through the first rotary table and the second rotary table simultaneously, a second servo motor located on the first slider and used for rotating the first rotary table, and a third servo motor located on the second slider and used for rotating the second rotary table. The second servo motor operates, the first rotary table moves along the Y lead screw, the third servo motor operates, and the second rotary table moves along the Y lead screw.

Preferably, the upper side of the workbench is provided with a plurality of sliding chutes, each sliding chute is connected with a clamp in a sliding manner, each clamp comprises a sliding sleeve with an upward opening, a sliding rod inserted at the top end of the sliding sleeve, a clamping rod fixedly connected at the top end of the sliding rod, a supporting plate positioned in the sliding sleeve, a spring positioned between the sliding rod and the supporting plate, a via hole positioned at the bottom end of the sliding sleeve, a stay wire connected at the bottom end of the sliding rod, and a first steering wheel positioned in the sliding sleeve, the first steering wheel is positioned below the supporting plate, the clamping rod is positioned on one side of the sliding rod facing the optical element, one end of the stay wire, which is far away from the slide bar, passes through the supporting plate, the first steering wheel and the via hole in sequence and then is connected with a stay wire mechanism, the wire drawing mechanism is located on one side, close to the optical element, of the sliding sleeve, one side, far away from the optical element, of the sliding sleeve is connected with a second spring, and one end, far away from the sliding sleeve, of the second spring is connected to the corresponding end of the sliding groove. The stay wire is pulled by the stay wire mechanism, the sliding sleeve slides towards the optical element under the action of the tensile force of the stay wire, when the sliding sleeve is abutted against the optical element, the stay wire continues to be pulled at the moment, the spring is shortened, the sliding rod moves downwards, and the optical element is pressed on the workbench by the clamping rod.

Preferably, the sliding chutes are arranged in an annular array by taking the circle center of the workbench as the center, and the sliding chutes are positioned on the radius of the workbench. The fixture has even fixing effect.

Preferably, the wire drawing mechanism comprises a cylinder body in the workbench, a driving piston in the cylinder body, a driven piston in the cylinder body, a driving piston rod inserted on the upper side of the cylinder body, and a driven piston rod inserted on the upper side of the cylinder body, the cylinder body comprises a shell, a partition board is arranged in the shell so as to divide the shell into a driving cavity in the middle of the shell and driven cavities around the driving cavity, a cylindrical sleeve is arranged at the top end of the driving cavity, the top end of the sleeve is fixedly connected to the upper side of the driving cavity, the driving piston is arranged in the sleeve and is in sliding connection with the sleeve, the driven piston is arranged in the driven cavity and is in sliding connection with the driven cavity, vent holes are formed in the upper end of the partition board so as to communicate the driving cavity with the driven cavity, an adsorption groove is formed in the corresponding position of the workbench, an adsorption piston matched with the adsorption groove is, the bottom end of the driving piston rod is fixedly connected to the driving piston, the top end of the driving piston rod is fixedly connected to the adsorption piston after penetrating through the connecting channel, the bottom end of the driven piston rod is fixedly connected to the driven piston, one end of the sliding chute far away from the second spring is provided with a pull line channel above the driven piston rod, a second steering wheel is arranged in the pull line channel, one end of the pull line far away from the sliding rod bypasses the second steering wheel after passing through the first steering wheel and is connected with the top end of the driven piston rod, the direction of the pull line between the first steering wheel and the second steering wheel is consistent with the direction of the corresponding sliding chute, the direction of the pull line between the second steering wheel and the driven piston rod is coaxial with the shaft of the driven piston rod, a third cylinder is arranged on the lower side of the cylinder body, the piston rod of the third cylinder penetrates upwards through the cylinder body and is connected to the driving piston, and a sealing ring for enhancing the air tightness of the driven cavity is sleeved on the driven piston rod. When the initiative piston descends, the atmospheric pressure in initiative chamber and the driven cavity risees to make initiative piston rod and driven piston rod all descend, thereby realize the effect of pulling the acting as go-between, this wire drawing mechanism realizes absorbent effect simultaneously, and when will take off optical element, the initiative piston upward movement, the second spring shrink, anchor clamps are automatic unclamp optical element.

Preferably, the cross section of the chute is T-shaped. The structure is simple.

Preferably, the inner diameter of the adsorption groove is equal to the inner diameter of the sleeve. When the driving piston moves downwards, the adsorption piston also moves downwards, air below the adsorption groove can flow to the upper end of the sleeve through the connecting channel, the change of the air pressure of the lower part of the adsorption groove and the upper end of the sleeve cannot be caused, and the force required by lifting the driving piston is reduced.

Preferably, the upper side of the workbench is provided with a second sealing ring for enhancing the air tightness of the adsorption groove, and the adsorption groove is positioned in the second sealing ring. The air tightness is improved.

Preferably, the outer edge of the bottom surface of the workbench is fixedly connected with an annular limiting bulge, the base is fixedly connected with a limiting guide rail at a position corresponding to the limiting bulge, a limiting groove matched with the limiting bulge is formed in the limiting guide rail, and the limiting bulge is located in the limiting groove. The stability of the workbench during rotation is improved.

The invention has the beneficial effects that: the polishing and grinding integrated machine for the optical element is high in machining efficiency, stable in fixing the optical element and high in fixing precision.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view of the table;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic view of the sliding sleeve abutting against the optical element;

fig. 5 is a schematic view of the clamping bar pressing the optical element against the table.

In the figure: the device comprises a base 1, a workbench 2, an X guide rail 3, a stand column 4, a Y guide rail 5, a first slide block 6, a second slide block 7, a polishing mechanism 8, a grinding mechanism 9, a first air cylinder 10, a second air cylinder 11, an X lead screw 12, a first servo motor 13, a Y lead screw 14, a first rotary table 15, a second rotary table 16, a second servo motor 17, a third servo motor 18, a limit protrusion 19, a limit guide rail 20, a limit groove 21, an optical element 22, a clamp 23, a sliding groove 24, a sliding sleeve 25, a sliding rod 26, a clamping rod 27, a support plate 28, a spring 29, a via hole 30, a pull wire 31, a first steering wheel 32, a second spring 33, a cylinder body 34, a driving piston 35, a driven piston 36, a driving piston rod 37, a driven piston rod 38, a shell 39, a driving cavity 40, a driven cavity 41, a sleeve 42, an air vent hole 43, an adsorption groove 44, an adsorption piston 45, a connection channel 46, a pull wire, Third cylinder 49, sealing ring 50, and partition plate 51.

Detailed Description

The invention is explained in further detail below with reference to the figures and the detailed description:

example (b):

referring to fig. 1 to 5, an optical element polishing and grinding integrated machine includes a base 1, a workbench 2 rotatably connected to the base 1 and used for placing an optical element 22, and a motor used for driving the workbench 2 to rotate, wherein an annular limiting protrusion 19 is fixedly connected to an outer edge of a bottom surface of the workbench 2, a limiting guide rail 20 is fixedly connected to the base at a position corresponding to the limiting protrusion 19, a limiting groove 21 adapted to the limiting protrusion 19 is formed in the limiting guide rail 20, and the limiting protrusion 19 is located in the limiting groove 21; the polishing machine is characterized in that X guide rails 3 are arranged on two opposite sides of a workbench 2 of the base 1, an upright post 4 is connected onto the X guide rails 3 in a sliding manner, an X driving mechanism used for driving the upright post 4 to move along the axis of the X guide rails 3 is arranged on the X guide rails 3, a Y guide rail 5 perpendicular to the X guide rails 3 is arranged between the X guide rails 3, two ends of the Y guide rail 5 are fixedly connected to the top end of the corresponding upright post 4, a first sliding block 6 and a second sliding block 7 are connected onto the Y guide rail 5 in a sliding manner, a Y driving mechanism used for driving the first sliding block 6 and the second sliding block 7 to move along the axis of the Y guide rail 5 is arranged on the Y guide rail 5, a polishing mechanism 8 and a first air cylinder 10 used for lifting the polishing mechanism 8 are arranged on the first sliding block 6, and a grinding mechanism 9; a plurality of sliding grooves 24 are formed in the upper side of the workbench 2, and the cross sections of the sliding grooves 24 are T-shaped; the chutes 24 are arranged in an annular array with the center of the circle of the workbench 2 as the center, and the chutes 24 are positioned on the radius of the workbench 2; the sliding chute 24 is slidably connected with a clamp 23, the clamp 23 comprises a sliding sleeve 25 with an upward opening, a sliding rod 26 inserted at the top end of the sliding sleeve 25, a clamping bar 27 fixedly connected at the top end of the sliding rod 26, a supporting plate 28 positioned in the sliding sleeve 25, a spring 29 positioned between the sliding rod 26 and the supporting plate 28, a through hole 30 positioned at the bottom end of the sliding sleeve 25, a pull wire 31 connected at the bottom end of the sliding rod 26, and a first steering wheel 32 positioned in the sliding sleeve 25, the first diverting pulley 32 is located below the supporting plate 28, the clamping bar 27 is located on the side of the slide bar 26 facing the optical element 22, one end of the pull wire 31 far away from the sliding rod 26 passes through the supporting plate 28, the first steering wheel 32 and the through hole 30 in sequence and then is connected with a wire pulling mechanism, the wire drawing mechanism is located on one side of the sliding sleeve 25 close to the optical element 22, one side of the sliding sleeve 25 far away from the optical element 22 is connected with a second spring 33, and one end of the second spring 33 far away from the sliding sleeve 25 is connected to the corresponding end of the sliding groove 24.

The wire drawing mechanism comprises a cylinder body 34 positioned in the workbench 2, a driving piston 35 positioned in the cylinder body 34, a driven piston 36 positioned in the cylinder body 34, a driving piston rod 37 inserted on the upper side of the cylinder body 34, and a driven piston rod 38 inserted on the upper side of the cylinder body 34, wherein the cylinder body 34 comprises a shell 39, a partition plate 51 is arranged in the shell 39 so as to divide the shell 39 into a driving cavity 40 positioned in the middle of the shell and driven cavities 41 positioned at the periphery of the driving cavity 40, a cylindrical sleeve 42 is arranged at the top end of the driving cavity 40, the top end of the sleeve 42 is fixedly connected on the upper side of the driving cavity 40, the driving piston 35 is positioned in the sleeve 42 and is in sliding connection with the sleeve 42, the driven piston 36 is positioned in the driven cavity 41 and is in sliding connection with the driven cavity 41, a vent hole 43 is arranged at the upper end of the partition plate 51 so as to communicate the driving cavity 40 with the driven, a second sealing ring for enhancing the air tightness of the adsorption groove 44 is arranged on the upper side of the workbench 2, and the adsorption groove 44 is positioned in the second sealing ring; the inner diameter of the adsorption groove 44 is equal to the inner diameter of the sleeve 42; an adsorption piston 45 matched with the adsorption groove 44 is connected in a sliding manner, a connecting channel 46 is arranged between the adsorption groove 44 and the cylinder 34, the bottom end of the driving piston rod 37 is fixedly connected to the driving piston 35, the top end of the driving piston rod 37 is fixedly connected to the adsorption piston 45 after penetrating through the connecting channel 46, the bottom end of the driven piston rod 38 is fixedly connected to the driven piston 36, a wire pulling channel 47 is arranged above the driven piston rod 38 and at one end of the chute 24 far away from the second spring 33, a second steering wheel 48 is arranged in the wire pulling channel 47, one end of the wire far away from the slide bar 26 passes through the first steering wheel 32 and then bypasses the second steering wheel 48 to be connected with the top end of the driven piston rod 38, the direction of the wire between the first steering wheel 32 and the second steering wheel 48 is consistent with the direction of the corresponding chute 24, and the direction of the wire between the second steering wheel 48 and the driven piston rod 38 is coaxial with the, the cylinder body 34 downside is equipped with third cylinder 49, the piston rod of third cylinder 49 upwards passes cylinder body 34 after and is connected with initiative piston 35, the cover is equipped with the sealing washer 50 that is used for strengthening the gas tightness of initiative chamber 40 on the piston rod of third cylinder 49, the cover is equipped with the sealing washer 50 that is used for strengthening the gas tightness of driven chamber 41 on the driven piston rod 38.

The X driving mechanism comprises an X lead screw 12 which penetrates through the bottom end of the upright post 4 and is in threaded connection with the upright post 4, and a first servo motor 13 which is used for rotating the X lead screw 12.

The Y driving mechanism comprises a first rotary disc 15 rotationally connected to the first sliding block 6, a second rotary disc 16 rotationally connected to the second sliding block 7, a Y lead screw 14 penetrating through the first rotary disc 15 and the second rotary disc 16 simultaneously, a second servo motor 17 located on the first sliding block 6 and used for rotating the first rotary disc 15, and a third servo motor 18 located on the second sliding block 7 and used for rotating the second rotary disc 16.

Principle of embodiment:

the grinding mechanism 9 and the polishing mechanism 8 are mature prior art and are not developed here.

At the time of polishing or grinding, the optical element is fixed on the table 2, and then the table 2 is rotated, and the polishing mechanism 8 or the grinding mechanism 9 is operated to polish or grind the optical element.

The first servomotor 13 operates, and the polishing mechanism 8 and the grinding mechanism 9 can move in the X-axis direction.

The second servomotor 17 operates, the polishing mechanism 8 is movable in the Y-axis direction, the third servomotor 18 operates, and the grinding mechanism 9 is movable in the Y-lead screw 14 direction.

When the optical element is fixed on the workbench 2, the optical element is firstly placed on the workbench 2, wherein the optical element is circular, the circle center of the optical element is aligned with the circle center of the workbench 2, then the third cylinder 49 operates, the driving piston 35 descends, the driving piston rod 37 descends, the adsorption piston 45 descends, a negative pressure area is formed above the adsorption groove 44, the optical element is preliminarily adsorbed on the workbench 2, and the optical element is prevented from being moved before being completely fixed; meanwhile, the air pressure of the driving cavity 40 is increased, the air pressure of the driven cavity 41 is increased due to the fact that the driving cavity 40 is communicated with the driven cavity 41, the vent hole 43 is located above the driven piston 36, the driven piston 36 descends, the driven piston rod 38 descends, the sliding sleeve 25 moves towards the optical element, when the sliding sleeve 25 abuts against the edge of the optical element, the driven piston rod 38 continues to descend, the pull wire 31 pulls the sliding rod 26 to descend, the spring is compressed, the clamping rod moves downwards, and the clamping rod presses the optical element on the workbench 2. In the above process, since the air pressure in the driven cavity 41 is equal to the air pressure in the driving cavity 40, the axial force of each driven piston rod 38 is equal, and the tension of each pull wire is equal, so that the pressure of each clamp rod on the optical element is equal, the pressure of each sliding sleeve 25 on the optical element is equal, and the sliding sleeves are arranged in an annular array with the center of the circle of the workbench 2 as the center, so that the pressures of the sliding sleeves on the optical element are finally self-balanced, no horizontal friction force exists between the optical element and the workbench 2, and the optical element is not easily moved in the processing process, so that the processing precision is higher.

Claims

1. The utility model provides an optical element's polishing grinding all-in-one, includes the base, rotates the workstation of connecting being used for placing optical element on the base, is used for driving workstation pivoted motor, a serial communication port, the base is equipped with the X guide rail in the relative both sides of workstation, sliding connection has the stand on the X guide rail, be equipped with the X actuating mechanism who is used for driving the stand along the axle motion of X guide rail on the X guide rail, be equipped with rather than the vertically Y guide rail between the X guide rail, Y guide rail both ends rigid coupling is on the stand top that corresponds, sliding connection has first slider and second slider on the Y guide rail, be equipped with the Y actuating mechanism who is used for driving first slider and second slider along the axle motion of Y guide rail on the Y guide rail, be equipped with polishing mechanism on the first slider, be used for elevating polishing mechanism's first cylinder, be equipped with grinding mechanism, grinding mechanism on, The second cylinder is used for lifting the grinding mechanism;

the utility model discloses a slide bar, including workstation upside, slide linkage, anchor clamps include the slide sleeve that the opening is up, insert the slide bar of establishing on the slide sleeve top, the clamping bar of rigid coupling on the slide bar top, be located the backup pad of slide sleeve, be located the spring between slide bar and the backup pad, be located the via hole of slide sleeve bottom, connect the acting as go-between in the slide bar bottom, be located the first directive wheel in the slide sleeve, first directive wheel is located the backup pad below, the clamping bar is located the slide bar towards optical element's one side, the one end of keeping away from the slide bar of acting as go-between is connected with the guy wire mechanism after backup pad, first directive wheel, via hole successively, the guy wire mechanism is located the one side that the slide sleeve is close to optical element, the one side that optical element was kept away from to the slide sleeve.

2. The integrated machine of claim 1, wherein the X-driving mechanism comprises an X-lead screw passing through the bottom end of the column and connected with the column by screw threads, and a first servo motor for rotating the X-lead screw.

3. The integrated machine of claim 1, wherein the Y-drive mechanism comprises a first rotary table rotatably connected to the first slide block, a second rotary table rotatably connected to the second slide block, a Y-lead screw passing through both the first rotary table and the second rotary table, a second servo motor provided on the first slide block for rotating the first rotary table, and a third servo motor provided on the second slide block for rotating the second rotary table.

4. The integrated machine of claim 1, wherein the chutes are arranged in an annular array around the center of the worktable, and the chutes are located on the radius of the worktable.

5. The integrated polishing and grinding machine for optical elements according to claim 1, wherein the wire drawing mechanism comprises a cylinder body located in the worktable, a driving piston located in the cylinder body, a driven piston located in the cylinder body, a driving piston rod inserted on the upper side of the cylinder body, and a driven piston rod inserted on the upper side of the cylinder body, the cylinder body comprises a housing, a partition is arranged in the housing to divide the housing into a driving cavity located in the middle of the housing and driven cavities located around the driving cavity, a tubular sleeve is arranged at the top end of the driving cavity, the top end of the sleeve is fixedly connected to the upper side of the driving cavity, the driving piston is located in the sleeve and is in sliding connection with the sleeve, the driven piston is located in the driven cavity and is in sliding connection with the driven cavity, an air vent is arranged at the upper end of the partition to communicate the driving cavity with the driven cavity, and an adsorption groove, the adsorption groove is connected with an adsorption piston matched with the adsorption groove in a sliding mode, a connecting channel is arranged between the adsorption groove and the cylinder body, the bottom end of the driving piston rod is fixedly connected to the driving piston, the top end of the driving piston rod is fixedly connected to the adsorption piston after penetrating through the connecting channel, the bottom end of the driven piston rod is fixedly connected to the driven piston, one end, away from the second spring, of the sliding groove is provided with a stay wire channel above the driven piston rod, a second steering wheel is arranged in the stay wire channel, one end, away from the sliding rod, of the stay wire passes through the first steering wheel and then bypasses the second steering wheel to be connected with the top end of the driven piston rod, the direction of the stay wire between the first steering wheel and the second steering wheel is consistent with the direction of the corresponding sliding groove, the direction of the stay wire between the second steering wheel and the driven piston rod is coaxial with the shaft of the driven piston rod, a third air cylinder, the piston rod of the third cylinder is sleeved with a sealing ring for enhancing the air tightness of the driving cavity, and the driven piston rod is sleeved with a sealing ring for enhancing the air tightness of the driven cavity.

6. The integrated polishing and grinding machine for optical elements according to claim 1, wherein the cross section of the sliding groove is T-shaped.

7. The integrated machine of claim 5, wherein the inner diameter of the absorption groove is equal to the inner diameter of the sleeve.

8. The integrated machine of claim 5, wherein the upper side of the worktable is provided with a second sealing ring for enhancing the airtightness of the adsorption groove, and the adsorption groove is positioned in the second sealing ring.

9. The integrated polishing and grinding machine for optical elements according to claim 1, 2, 3, 4, 5, 6, 7, or 8, wherein an annular limiting protrusion is fixedly connected to the outer edge of the bottom surface of the worktable, a limiting guide rail is fixedly connected to the base at a position corresponding to the limiting protrusion, a limiting groove adapted to the limiting protrusion is formed in the limiting guide rail, and the limiting protrusion is located in the limiting groove.