CN112454016A - Grinding method for processing lens by using macroprogram - Google Patents
Grinding method for processing lens by using macroprogram Download PDFInfo
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- CN112454016A CN112454016A CN202011333349.9A CN202011333349A CN112454016A CN 112454016 A CN112454016 A CN 112454016A CN 202011333349 A CN202011333349 A CN 202011333349A CN 112454016 A CN112454016 A CN 112454016A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 description 8
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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Classifications
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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
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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
Abstract
The invention belongs to the technical field of lens processing, and particularly relates to a grinding method for processing a lens by utilizing a macro program; the method comprises the following steps: estimating the diameter of the grinding wheel; adjusting an aspheric surface grinding device; processing in batches by using a macroprogram; the steps of adjusting the aspheric surface grinding device are as follows: adjusting an X axis, a Y axis and a B axis of a Z axis of the grinding device to enable a grinding wheel contact point to just pass through the center point of a workpiece, calculating the descending distance of the Z axis, processing by using a macro program, detecting whether the R value at the moment is in accordance with the machine, and processing in batches by using the macro program after the R value is in accordance with the machine; the processing surface precision can be high, and the processing efficiency is high.
Description
Technical Field
The invention belongs to the technical field of lens processing, and particularly relates to a grinding method for processing a lens by utilizing a macro program.
Background
With the vigorous development of the optical market, the proportion of infrared lenses in the market is continuously increasing. The spherical lens processing in the current market is mainly finished by a common numerical control lathe or a diamond single-point lathe. The defects of low surface type precision and large subsequent polished amount exist in the common numerical control lathe processing. Almost all diamond single-point lathes are imported foreign equipment, and have the defects of high processing cost, low efficiency and the like.
Disclosure of Invention
The invention aims to provide a grinding method for processing a lens by utilizing a macro program, which can ensure high accuracy of a processed surface and high processing efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a grinding method for processing a lens using a macro program, comprising the steps of:
estimating the diameter of the grinding wheel; adjusting an aspheric surface grinding device; and (5) processing in batches by using a macro program.
Further, the step of adjusting the aspheric surface grinding device is: and adjusting the X axis, the Y axis and the B axis of the Z axis of the grinding device to enable the contact point of the grinding wheel to just pass through the center point of the workpiece, calculating the descending distance of the Z axis, processing by using a macro program, detecting whether the R value at the moment is in accordance with the machine, and processing in batches by using the macro program after the R value is in accordance with the machine.
And further, if the R value does not meet the requirement, calculating the theta angle value and the Z value by using the R value, and then returning to the step of processing by using the macro program for re-processing.
Further, the calculation is disclosed as:
X0＝a×sinθ，Z0＝L+a×cosθ。
further, wherein a is the distance from the rotation center of the machine tool to the surface of the workpiece, R is the required radius of the workpiece, and theta is the angle rotated by the B axis of the rotating shaft; dmIs the diameter of the grinding wheel over the center, Z0The distance the grinding wheel descends.
Further, the grinding device comprises a base, linear guide that the base upper surface is provided with parallel to each other, linear guide is provided with two, be provided with Y axle slider on two linear guide, two Y axle slider tops are provided with A axle revolving stage, it is provided with A axle and C axle coupling mechanism to rotate on the A axle revolving stage, it is provided with C axle workstation to rotate on A axle and the C axle coupling mechanism, be provided with the work piece on the C axle workstation, the base top still is provided with the stand, the stand top is provided with Z spindle unit, be provided with spindle motor on the Z spindle unit, the spindle motor end is provided with the mill.
Furthermore, the Y-axis sliding block and the A-axis turntable are driven by an external motor, and the external motor and the spindle motor are electrically connected with the controller.
Compared with the prior art, the invention has the beneficial effects that: the invention uses the macro program to process, the surface shape precision is higher, the processing efficiency is high, the cost is greatly reduced, and the subsequent polished amount is small.
Drawings
FIG. 1 is a schematic view of a grinding apparatus;
FIG. 2 is a schematic structural view of a concave spherical surface during machining;
FIG. 3 is a schematic structural view of a convex spherical surface during machining;
FIG. 4 is a schematic view of a 5-axis apparatus configuration;
FIG. 5 is a flow chart of the processing steps.
In the figure, 1-base, 2-linear guide rail, 3-Y slide block, 4-A axis turntable, 5-upright post, 6-Z spindle mechanism, 7-spindle motor, 8-grinding disc, 9-A axis and C axis connecting mechanism, 10-C axis workbench and 11-workpiece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A grinding method for processing a lens by using a macro program, as shown in fig. 5, comprising the steps of: estimating the diameter of the grinding wheel; adjusting an aspheric surface grinding device, wherein the step of adjusting the aspheric surface grinding device is as follows: adjusting the X axis, the Y axis and the B axis of the Z axis of the grinding device to enable a grinding wheel contact point to just pass through the center point of a workpiece, calculating the descending distance of the Z axis, processing by using a macro program, detecting whether the R value at the moment is in accordance with the machine, processing in batches by using the macro program after the R value is in accordance with the machine, calculating the theta angle value and the Z value by using the R value if the R value is not in accordance with the requirement, and returning to the processing step of using the macro program for processing again; the macro program is utilized to process in batch,
X0＝a×sinθ，Z0l + a × cos θ, where a is the distance from the rotation center of the machine tool to the surface of the workpiece, R is the required radius of the workpiece, and θ is the angle through which the axis B of the rotation shaft rotates; dmIs the diameter of the grinding wheel over the center, Z0Distance of descent of grinding wheelIn addition, the invention uses the macro program to process, the surface shape precision is higher, the processing efficiency is high, the cost is greatly reduced, and the subsequent polished amount is small.
Example 2
On the basis of embodiments 1 and 2, as shown in fig. 1, the grinding device comprises a base 1, linear guide rails 2 which are parallel to each other are arranged on the upper surface of the base 1, two linear guide rails 2 are arranged, Y-axis sliders 3 are arranged on the two linear guide rails 2, an a-axis turntable 4 is arranged on the tops of the two Y-axis sliders 3, an a-axis and C-axis coupling mechanism 9 is arranged on the a-axis and C-axis coupling mechanism 4 in a rotating manner, a C-axis worktable 10 is arranged on the a rotating manner, a workpiece 11 is arranged on the C-axis worktable 10, an upright column 5 is further arranged on the top of the base 1, a Z-spindle mechanism 6 is arranged on the top of the upright column 5, a spindle motor 7 is arranged on the Z-spindle mechanism 6, a grinding disc 8 is arranged at the tail end of the spindle motor 7, the Y-axis sliders 3 and the a-axis turntable 4 are driven by external motors, both the external motors and the spindles 7, the calculation error can be minimized. The real single-point line contact in the whole processing process is ensured. The device is characterized in that the workpiece rotates, and the grinding head rotates, so that the processing linear speed is higher. The two-axis linkage of C-axis rotation and Z-axis motion is adopted, so that the influence of the geometric precision of the machine tool on the machining error is reduced to the minimum, and a very high grinding linear speed can be obtained, thereby ensuring good surface form precision and good surface roughness.
As shown in fig. 2 to 4, the following relationships can be obtained from the positioning relationship diagrams of the X axis and B axis of the machine tool, the workpiece, and the grinding wheel in the grinding of the concave spherical surface and the convex spherical surface, respectively:
deflection angle of B axis
X0＝a×sinθ，Z0＝L+a×cosθ。
Wherein, the circle center of the round corner of the grinding wheel must be over-processed with the axis of the highest point of the lens ball DmThe radius of the grinding wheel is the middle diameter of the grinding wheel, R is the radius of the arc of the lens, R is the radius of the fillet of the grinding wheel, + is a convex surface, -is a concave surface.
The five-axis grinding processing mode is specifically as follows: deviation of B axisRotating a certain angle theta, moving the X to X0, rotating the C axis automatically, and moving the Z downwards to Z0。
The invention can be processed by a plane step surface with the diameter of the excircle being as small as 15mm and a spherical surface with the diameter of the excircle being 230mm, and has good processing effect.
The profile tolerance of the concave-convex surface of the processed product can be kept within 0.0005mm for a long time, and the ETV can be guaranteed within 0.01mm by matching with a clamp.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (5)
1. A method of grinding a lens using a macroprogram, comprising: the method comprises the following steps:
estimating the diameter of the grinding wheel; adjusting an aspheric surface grinding device; and (5) processing in batches by using a macro program.
2. A grinding method for processing a lens by a macroprogram according to claim 1, wherein: the steps of adjusting the aspheric surface grinding device are as follows: and adjusting the X axis, the Y axis and the B axis of the Z axis of the grinding device to enable the contact point of the grinding wheel to just pass through the center point of the workpiece, calculating the descending distance of the Z axis, processing by using a macro program, detecting whether the R value at the moment is in accordance with the machine, and processing in batches by using the macro program after the R value is in accordance with the machine.
3. A grinding method for processing a lens by a macroprogram according to claim 2, wherein: if the R value does not meet the requirement, the R value is utilized to calculate the theta angle value and the Z value0Value, then return to using the macroAnd re-processing in sequence processing steps.
4. A grinding method for processing a lens by a macroprogram according to claim 1, wherein: the calculation is disclosed as:
X0＝a×sinθ，Z0＝L+a×cosθ。
5. a grinding method for processing a lens by a macroprogram, according to claim 4, wherein: wherein a is the distance from the rotation center of the machine tool to the surface of the workpiece, R is the radius required by the workpiece, and theta is the angle rotated by the B axis of the rotating shaft; dmIs the diameter of the grinding wheel over the center, Z0The distance the grinding wheel descends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011333349.9A CN112454016A (en) | 2020-11-24 | 2020-11-24 | Grinding method for processing lens by using macroprogram |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011333349.9A CN112454016A (en) | 2020-11-24 | 2020-11-24 | Grinding method for processing lens by using macroprogram |
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| CN112454016A true CN112454016A (en) | 2021-03-09 |
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| CN202011333349.9A Pending CN112454016A (en) | 2020-11-24 | 2020-11-24 | Grinding method for processing lens by using macroprogram |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656787A (en) * | 1984-04-20 | 1987-04-14 | Matsushita Electric Industrial Co., Ltd. | Curved surface formation polishing apparatus |
| JPH10175149A (en) * | 1996-10-14 | 1998-06-30 | Seiko Epson Corp | Manufacture of spectacle lens and device thereof |
| JP2000153439A (en) * | 1998-11-17 | 2000-06-06 | Asahi Optical Co Ltd | Nc triaxial centripetal grinding polishing device and grinding polishing method of glass lens using nc triaxial grinding polishing device |
| CN101088705A (en) * | 2007-02-14 | 2007-12-19 | 长春设备工艺研究所 | Efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements |
| CN101332579A (en) * | 2007-06-29 | 2008-12-31 | 沈阳仪表科学研究院 | Numerical control aspheric reflector forming machine and use method thereof |
| CN102922389A (en) * | 2012-11-16 | 2013-02-13 | 厦门大学 | Polishing device and polishing method of aspheric optical element |
| CN105014503A (en) * | 2015-05-19 | 2015-11-04 | 上海交通大学 | Precise grinding method for large-caliber axisymmetric aspheric surfaces |
| CN211639340U (en) * | 2019-12-14 | 2020-10-09 | 吉林大学 | Four-mirror polishing measuring device based on universal tool system |
-
2020
- 2020-11-24 CN CN202011333349.9A patent/CN112454016A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656787A (en) * | 1984-04-20 | 1987-04-14 | Matsushita Electric Industrial Co., Ltd. | Curved surface formation polishing apparatus |
| JPH10175149A (en) * | 1996-10-14 | 1998-06-30 | Seiko Epson Corp | Manufacture of spectacle lens and device thereof |
| JP2000153439A (en) * | 1998-11-17 | 2000-06-06 | Asahi Optical Co Ltd | Nc triaxial centripetal grinding polishing device and grinding polishing method of glass lens using nc triaxial grinding polishing device |
| CN101088705A (en) * | 2007-02-14 | 2007-12-19 | 长春设备工艺研究所 | Efficient numerically controlled polishing process and apparatus for great aperture aspherical optical elements |
| CN101332579A (en) * | 2007-06-29 | 2008-12-31 | 沈阳仪表科学研究院 | Numerical control aspheric reflector forming machine and use method thereof |
| CN102922389A (en) * | 2012-11-16 | 2013-02-13 | 厦门大学 | Polishing device and polishing method of aspheric optical element |
| CN105014503A (en) * | 2015-05-19 | 2015-11-04 | 上海交通大学 | Precise grinding method for large-caliber axisymmetric aspheric surfaces |
| CN211639340U (en) * | 2019-12-14 | 2020-10-09 | 吉林大学 | Four-mirror polishing measuring device based on universal tool system |
Non-Patent Citations (1)
| Title |
|---|
| 曹根基等, 湖南科学技术出版社 * |
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Application publication date: 20210309 |
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