WO2002040218A1 - Procede et appareil de trace formant des parties a surface non spherique - Google Patents
Procede et appareil de trace formant des parties a surface non spherique Download PDFInfo
- Publication number
- WO2002040218A1 WO2002040218A1 PCT/CN2001/001501 CN0101501W WO0240218A1 WO 2002040218 A1 WO2002040218 A1 WO 2002040218A1 CN 0101501 W CN0101501 W CN 0101501W WO 0240218 A1 WO0240218 A1 WO 0240218A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cone
- trajectory
- aspheric
- grinding wheel
- axis
- Prior art date
Links
Classifications
-
- 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
- B24B17/00—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
- B24B17/02—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving mechanical transmission means only
- B24B17/025—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving mechanical transmission means only for grinding rotating workpieces (three dimensional)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
- B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
- B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
- B23Q35/10—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only
- B23Q35/101—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool
- B23Q35/102—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool of one line
-
- 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
-
- 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
- B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
Definitions
- aspherical parts in the optical system has the incomparable advantages of spherical parts, but due to the difficulty of aspheric processing and testing, it has not been widely used for a long time.
- people have been working hard to explore aspheric processing and inspection technology, and promoted the rapid development and application of aspheric processing technology.
- mechanism or mold forming method can only be applied to the batch of medium and low precision aspheric parts of a certain shape and specific size. Mass production.
- NC machining belongs to flexible machining technology and is applicable to the processing of aspheric parts of various shapes and sizes.
- the processing equipment is expensive and the operation technology is complicated. It belongs to an expert operation technique.
- aspheric surfaces used in optical systems. Among them, axisymmetric aspheric surfaces are used the most, and processing of axisymmetric aspheric surfaces is difficult. Most of the axisymmetric aspheric surfaces are curved surfaces formed by elliptic, parabolic, and hyperbolic quadratic curves. In addition, there are a small number of higher-order aspheric parts. Disclosure of invention
- the object of the present invention is to solve the problems existing in the above-mentioned method and device for processing aspheric parts, and to create a method and device for aspheric trajectory forming processing, which is suitable for single-piece processing of various shapes and sizes, and Suitable for mass production needs with high efficiency and low cost.
- the present invention is achieved by providing a method for processing aspherical parts, including rough grinding, fine grinding, and ultra-fine grinding (or polishing) of a convex-concave secondary aspheric surface and a high-order aspherical surface.
- the method is characterized in that the steps of the processing method of the quadratic aspheric part are: according to the quadratic curve equation given by the design, mathematically calculate the parameters ⁇ , ⁇ and 1 ⁇ in the cone through mathematical calculations, or Trial machining method to determine the appropriate curve trajectory; use a trajectory interceptor to intercept the trajectory on a cone, that is, install the cone on the aspheric part trajectory forming device provided with the trajectory interceptor, and determine the cone according to the parameters obtained above The relative position of the body and the intercepting body; while the part is rotating, it swings with the cone about the swing axis, so that the exact trajectory curve intercepted on the cone is transferred to the part to form an aspheric surface, which can be used in the processing process.
- the intercepted trajectory is accurately transferred to the part to obtain a secondary aspheric part.
- the convex or concave high-order aspheric part can be obtained by machining the trajectory, and an accurate flat template can be processed by other methods instead of design.
- the cone on the device can accurately transfer the high-order curve on the plane sample to the part, and obtain the high-order aspheric Face parts.
- the present invention also provides a device for implementing the above-mentioned processing method, which is composed of a swinging table, a thrust support block, a thruster, a component shaft driving motor, a cone moving screw, a guide base, a component mounting shaft, a support base, and a grinding wheel.
- a device for implementing the above-mentioned processing method which is composed of a swinging table, a thrust support block, a thruster, a component shaft driving motor, a cone moving screw, a guide base, a component mounting shaft, a support base, and a grinding wheel.
- the grinding wheel is mounted on the bracket, and the track interceptor can be mounted on the bracket forward and backward, and the bracket is fixed on On the bed, the cone is mounted on the support at an adjustable angle, and the support is fixed on the guide.
- the guide can slide along the bottom guide of the part shaft box.
- the swing axis motor drives the swing table to swing around the swing axis. It is clamped on the front end of the component mounting shaft, and rotates with the cone along with the cone while rotating with the shaft.
- the thrust support block is fixed on the swing support, and the thrust support block and the component shaft A thruster is installed between the boxes, so that the cone and the track interceptor are always in contact.
- the axis of the component mounting shaft, the axis of the cone and the axis of the swing shaft are required to be coplanar in a vertical plane, and the axis of the component mounting shaft and the axis of the grinding wheel are required to be coplanar in a horizontal plane.
- the processing method it can process aspherical optical or mechanical parts made of glass, ceramic, crystal and metal.
- the invention is based on the innovative principle of accurately intercepting the trajectory of a given quadratic curve equation given by the design And the innovative technology of accurately transferring the intercepted trajectory to the forming aspheric surface on the part during the processing, so as to realize the aspheric trajectory forming method and device.
- Figure 1 is a schematic diagram of intercepting a trajectory on a cone
- FIG. 2 is a schematic diagram of an apparatus for processing convex aspheric parts
- FIG. 3 is a schematic diagram of an apparatus for processing concave aspheric parts
- Figure 4 is a schematic diagram of a cylindrical grinding wheel used when processing concave aspheric parts. The best way to implement the invention
- FIG. 1 it is a schematic diagram of intercepting trajectories in a cone.
- the trajectory of a circular curve equation can be cut; if the angle between the plane bb and the cone axis is within 90 °>0> a, the trajectory of an elliptic curve equation can be cut; if the plane cc is clamped with the cone axis
- the exact positions of the cone 13 and the trajectory interceptor 12 are determined based on the obtained exact values of, ⁇ , and L.
- the center of the circle closest to the circle of the aspheric part 9 is aligned with the axis 15 of the swing axis to make the trajectory interception Contact point D of body 12 and cone 13 It is kept on the same vertical line as the grinding surface of the grinding wheel, and the cone 13 and the track intercepting body 12 are always in contact with each other under a small thrust.
- the swinging axis motor 16 starts the swinging of the swinging table 1, and then the accurate trajectory of the quadratic curve equation given by the design can be drawn on the cone.
- the grinding wheel 10 and the part 9 are started to rotate, and the The part moves to the grinding wheel by a small feed. Then, the grinding wheel accurately removes the remaining amount on the part according to the intercepted trajectory. After repeated grinding, the remaining trajectory can be accurately transferred. Go to part 9 to obtain a high-precision quadratic aspheric surface that is completely consistent with the curve equation trajectory given by the design.
- FIG. 2 is a schematic diagram of a device for processing convex aspheric parts, which is composed of a swinging table 1, a thrust support block 2, a thruster 3, a component shaft driving motor 4, a cone moving screw 5, a guide 6, a component mounting shaft 7, and a support.
- the grinding wheel 10, the bracket 11, the track intercepting body 12, the cone 13, the bed 14, the swing shaft 15, the swing shaft driving motor 16 and the component shaft case 17 are formed.
- the part 9 rotates around the part axis 7 with the cone 13 at the same time as the swinging table 1 around the swing axis 15 within the half-opening angle range of the part. Under the action of the thrust of the spring thruster 3, the cone 13 intercepts the body 12 against the trajectory.
- the device is provided with a component shaft box 17, which can slide longitudinally on the swinging table 1, and a thruster 3 is provided between the thrust support 2 fixed to the swinging table 1 and the box 17, as shown in FIG. 2 It is shown that the thruster 3 uses the thrust of a spring, and can also be replaced by the pulling force of a weight.
- the track intercepting body 12 can be set on the bracket 11 or on the bed 14 and can move forward and backward and up and down. The ends of the track intercepting body 12 should be aligned with the outer grinding surface of the grinding wheel 10 on a vertical plane.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002220466A AU2002220466A1 (en) | 2000-11-17 | 2001-10-24 | Method and apparatus for trace performing parts with aspherical surfaces |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN00132770.4 | 2000-11-17 | ||
CN 00132770 CN1214896C (zh) | 2000-11-17 | 2000-11-17 | 非球面零件的轨迹成形加工方法及装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002040218A1 true WO2002040218A1 (fr) | 2002-05-23 |
Family
ID=4595391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2001/001501 WO2002040218A1 (fr) | 2000-11-17 | 2001-10-24 | Procede et appareil de trace formant des parties a surface non spherique |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1214896C (zh) |
AU (1) | AU2002220466A1 (zh) |
WO (1) | WO2002040218A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102049717A (zh) * | 2010-07-19 | 2011-05-11 | 长春理工大学 | 一种数控成形高次非球面控制方法及硬件系统 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100400225C (zh) * | 2003-08-22 | 2008-07-09 | 中国人民解放军国防科学技术大学 | 非球面光学零件复合加工、检测机床 |
CN1326651C (zh) * | 2005-06-13 | 2007-07-18 | 长春理工大学 | 刀具摆动非球面加工方法及装置 |
CN101376229B (zh) * | 2007-08-30 | 2012-07-18 | 长春理工大学 | 非球面零件数控切线回转法成形加工方法及装置 |
CN101829790B (zh) * | 2010-04-12 | 2011-08-10 | 厦门大学 | 一种小型非球面光学元件的车削加工方法 |
CN102729117B (zh) * | 2012-06-19 | 2015-03-25 | 南京中科天文仪器有限公司 | 数控非球面磨镜机 |
CN107962459B (zh) * | 2017-11-24 | 2019-04-09 | 马鞍山市利成刀片制造厂 | 一种圆弧形刀片刀刃的磨削方法 |
CN108284369B (zh) * | 2018-03-27 | 2021-01-26 | 广东工业大学 | 一种非球面超精密抛光与形状误差补偿方法 |
CN111844193B (zh) * | 2020-06-04 | 2022-04-12 | 山东泓球渔具股份有限公司 | 一种纳米浮漂初步加工装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU650789A1 (ru) * | 1976-12-01 | 1979-03-05 | Предприятие П/Я Г-4671 | Способ обработки оптических деталей с асферическими поверхност ми |
US4161847A (en) * | 1977-04-04 | 1979-07-24 | New Asian Corporation | Apparatus and method for performing aspherical operations on a workpiece |
CN85106896A (zh) * | 1985-09-18 | 1987-04-01 | 华北光电技术研究所 | 抛物面加工装置 |
-
2000
- 2000-11-17 CN CN 00132770 patent/CN1214896C/zh not_active Expired - Fee Related
-
2001
- 2001-10-24 WO PCT/CN2001/001501 patent/WO2002040218A1/zh active Application Filing
- 2001-10-24 AU AU2002220466A patent/AU2002220466A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU650789A1 (ru) * | 1976-12-01 | 1979-03-05 | Предприятие П/Я Г-4671 | Способ обработки оптических деталей с асферическими поверхност ми |
US4161847A (en) * | 1977-04-04 | 1979-07-24 | New Asian Corporation | Apparatus and method for performing aspherical operations on a workpiece |
CN85106896A (zh) * | 1985-09-18 | 1987-04-01 | 华北光电技术研究所 | 抛物面加工装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102049717A (zh) * | 2010-07-19 | 2011-05-11 | 长春理工大学 | 一种数控成形高次非球面控制方法及硬件系统 |
Also Published As
Publication number | Publication date |
---|---|
CN1354070A (zh) | 2002-06-19 |
CN1214896C (zh) | 2005-08-17 |
AU2002220466A1 (en) | 2002-05-27 |
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