CN102198623A - Elastic fine grinding device for aspherical part - Google Patents
Elastic fine grinding device for aspherical part Download PDFInfo
- Publication number
- CN102198623A CN102198623A CN2011101186184A CN201110118618A CN102198623A CN 102198623 A CN102198623 A CN 102198623A CN 2011101186184 A CN2011101186184 A CN 2011101186184A CN 201110118618 A CN201110118618 A CN 201110118618A CN 102198623 A CN102198623 A CN 102198623A
- Authority
- CN
- China
- Prior art keywords
- grinding pad
- grinding
- fine grinding
- elastomeric element
- grinding device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an elastic fine grinding device for an aspherical part, comprising a base body, an elastic part and a grinding pad, wherein the grinding pad is formed by a metal sheet bonded on one side of the elastic part. The grinding pad disclosed by the invention is selected from the metal sheet with higher hardness and smaller thickness, and is totally deformed when stressed; and drapes exist on the deformed surface of the grinding pas, therefore, after the grinding pad acts on the ground surface, the high-frequency drapes formed by the numerical control grinding on the ground surface of the aspherical part are effectively removed, the surface roughness of the ground surface is reduced, and the fine grinding precision is improved.
Description
Technical field
The present invention relates to a kind of elasticity fine grinding device, be specifically related to a kind of elasticity fine grinding device that is used for aspheric surface part.
Background technology
In large-scale optical system, the use of aspherical optical element can reduce optical system complexity, reduce system dimension and mitigation system weight, thereby improve the performance of optical system, therefore developing high-quality large scale aspherical optical element has very important meaning to the development of space optics, astronomical observation.Because the manufacture difficulty of aperture aspherical optical element is bigger, so restricted its development and used.
In the roughing stage, utilize the surface of the aspheric surface blank part after the milling of numerical-control milling and grinding machine to have the gully structure of cutter path shape, if do not handle, this gully structure makes that easily the non-spherical surface percent ripple after the polishing is very strong, can not satisfy the required precision of optical element.In order to adapt to accurately machined requirement, need carry out fine grinding to the surface.Traditional sphere fine grinding, the methods that adopt hard contact are used to add diamond dust with to be ground identical glass grinding dish or cast iron abrasive disk and carry out fine grinding more.When fine grinding aperture aspherical element, can't use the fine grinding dish suitable, so have only the small-bore fine grinding dish fine grinding heavy caliber part of use with the aspheric surface bore.And a notable feature of aperture aspherical is in different zones, and it possesses different near sphere, and this makes the aperture aspherical element can't find a fine grinding dish and its all surface to coincide.In order to address this problem, when fine grinding aperture aspherical element, select different fine grinding dishes for use in different positions, this makes the surface of transitional region fine grinding dish and non-spherical element misfit again.
Fit fully in the course of the work with by abradant surface for making grinding pad, Chinese invention patent CN1772436A discloses a kind of one side that is used for and has rotated contact by abradant surface, the elastic grinding instrument that grind on one side and the Ginding process of eyeglass, this elastic grinding instrument comprises elastic grinding body and grinding pad, described elastic grinding body has can profiling described by abradant surface and change the characteristic of shape, the elastic grinding body is a cylindrical shape, on cylindrical shape one side's face, form dome-type curved surface, this curved surface have be similar to eyeglass by the predetermined radius of curvature of the surface configuration of abradant surface; Described grinding pad be installed in the elastic grinding body in the face of eyeglass by on the curved surface of abradant surface, its material is nonwoven or the thin slice that formed by porous material.The shape of the elastic grinding body of this elastic grinding instrument and elasticity make grinding pad in process of lapping constantly with fitted by abradant surface, but guarantee to be in fully in the range of work by abradant surface, its milling tool bore is roughly suitable with the bore that is ground aspherical lens.Simultaneously, the material of the grinding pad of this elastic grinding instrument (polishing pad) is nonwoven or the thin slice that formed by porous material, and its rigidity is very little, and the high frequency fold that causes grinding on the aspheric surface after (polishing) can not be removed fully.This patent of invention is small-bore aspheric surface part rather than the fine grinding non-spherical surface part that is used in polishing aspherical eyeglass lens class in fact in fact.
So for fine grinding aperture aspherical element well, need to seek a fine grinding device that has higher hardness and can be well coincide with non-spherical surface, thereby solve aperture aspherical part fine grinding link fine grinding dish and treat the fine grinding work working surface problem of coincideing.
Summary of the invention
Goal of the invention of the present invention provides a kind of elasticity fine grinding device that is used for aspheric surface part, by use of the present invention, improves aspheric surface part by the surface accuracy of abradant surface.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of elasticity fine grinding device that is used for aspheric surface part, comprise matrix, elastomeric element and grinding pad, and described grinding pad is made of the sheet metal that fits in described elastomeric element one side.
Further technical scheme, described matrix is located at the opposite side of described elastomeric element, described matrix is provided with the curved surface that contacts with described elastomeric element, and the radius of curvature of described curved surface and aspheric surface part are 0.95～1.05 near the ratio of ball radius of curvature by abradant surface.
In the technique scheme, described elastomeric element is a cylinder, and its diameter is 6～20 with the ratio of height.
In the technique scheme, described grinding pad is the thick zinc metal sheet of 0.5～1.5mm.
In the technique scheme, uniform at least 3 vacancy sections on the described grinding pad.
In the technique scheme, described grinding pad constitutes petal grinding pad by provided thereon 4 uniform U-shaped otch.
In the technique scheme, described grinding pad is circular, which is provided with 4 uniform diamond holes.
In the technique scheme, the material of described elastomeric element is EVA.
In the technique scheme, cohering on the described grinding pad has polishing body, and it is polished leather or polyurethane polishing disc; By cohering described polishing body, the present invention can be used as burnishing device and uses.
The fine grinding process is as follows:
Step 1, the size of matrix of determining elasticity fine grinding device according to the aspheric near ball radius of curvature of aperture aspherical part and the diameter of elastomeric element and grinding pad are fixedlyed connected matrix, elastomeric element and grinding pad respectively then;
Step 4, utilize power set to drive the elastic grinding device to move along the normal orientation of the milling marking, add polishing particles (diamond dust) to grinding pad and between, grind off by the gully that forms by the cutter marking on the abradant surface by abradant surface by means of external structure.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1. grinding pad of the present invention selects that hardness is big, the less sheet metal of thickness for use, bulk deformation when stressed, its surface possesses certain rigid, and the distortion rear surface can be along with being out of shape by the fold of abradant surface, make grinding pad act on by behind the abradant surface, effectively remove aspheric surface part that numerical-control milling and grinding forms by the high frequency fold on the abradant surface, reduce by the surface roughness of abradant surface, improve the fine grinding precision.
2. matrix of the present invention be provided with radius of curvature and aspheric surface part by abradant surface near the approaching curved surface of ball radius of curvature, this make elastomeric element elastic compensating grinding pad and by misfitted between the abradant surface zone the gap very little, grinding pad is under the effect of the power of being bestowed by abradant surface and elastomeric element, constantly with fitted by abradant surface and whole stressed variation little, thereby make and grind evenly.
Description of drawings
Fig. 1 is the structural representation after the aspheric surface milling of aspheric surface part;
Schematic diagram when Fig. 2 is embodiments of the invention one duty;
Fig. 3 is the schematic diagram of the embodiment of the invention one;
Fig. 4 is the front view of the grinding pad of embodiment one;
Fig. 5 is the part sectioned view of the grinding pad of embodiment one;
Fig. 6 is the schematic diagram of the embodiment of the invention two;
Fig. 7 is the front view of the grinding pad of embodiment two;
Wherein: 1, elastomeric element; 2, grinding pad; 2a, otch; 2b, diamond hole; 3, matrix; 30, curved surface; 4, polishing body.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: referring to shown in Figure 1, the aperture aspherical part can leave the gully structure that is formed by the cutter marking after by the numerical-control milling and grinding machined on its aspheric surface.
As shown in Figure 3, a kind of elasticity fine grinding device that is used for aspheric surface part, comprise elastomeric element 1, fit in the grinding pad 2 of described elastomeric element one side and be located at the matrix 3 of described elastomeric element 1 opposite side, the material of described matrix 3 is an aluminium, described matrix 3 is provided with the curved surface 30 that contacts with described elastomeric element, the radius of curvature of described curved surface 30 and aspheric surface part are 0.95～1.05 near the ratio of ball radius of curvature by abradant surface, guarantee grinding pad in the course of the work with fitted constantly by abradant surface;
Described grinding pad 2 is the thick zinc metal sheet of 0.5～1.5mm; As shown in Figure 4, described grinding pad 2 is provided with 4 uniform U-shaped otch 2a, constitutes petal grinding pad, and described notch makes abrasive particle can be evenly distributed on grinding pad and by between the abradant surface, provides drain passageway for lapping rejects simultaneously; On the other hand, in the process of lapping, grinding pad and can be produced a large amount of frictional heat between the abradant surface, the notch of offering on the grinding pad helps cooling water to enter, and is beneficial to heat radiation.
As shown in Figure 5, the surface local of described grinding pad is provided with the gully, makes abrasive particle can be evenly distributed on grinding pad and by between the abradant surface, improves the fine grinding quality.
Described elastomeric element 1 is a cylinder, and its diameter is 6 with the ratio of height, guarantee the fine grinding dish motion stabilization, do not turn over.The material of described elastomeric element 1 is EVA, and this material has good buffering, and resist chemical, life-span be long, nontoxic, do not absorb water.The present invention utilizes the elasticity of EVA material to compensate grinding pad and is misfitted the gap in zone between the abradant surface.The thickness of described elastomeric element is determined according to described matrix radius and by the error amount between the abradant surface, if error amount is smaller, is then selected the material of thin thickness; If error amount is bigger, then select the thicker material of thickness, preferably follow following principle: (1) selects the thick EVA plate of 1mm if error amount is 0～10um; (2) if error amount is 10um～20um, then select the thick EVA plate of 2mm; (3) if error amount is 20um～30um, then select the thick EVA plate of 3mm.
Elastomeric element of the present invention is not limited to EVA material and above-mentioned thickness selection principle, can adjust according to technological requirement and actual conditions.Described elastomeric element is selected the good buffering of having of other, and the elastomeric material of performances such as resist chemical as long as can satisfy instructions for use of the present invention, all drops in protection scope of the present invention.
The fine grinding process is as follows:
Step 1, the size of matrix of determining elasticity fine grinding device according to the aspheric near ball radius of curvature of aperture aspherical part and the diameter of elastomeric element and grinding pad are fixedlyed connected matrix, elastomeric element and grinding pad respectively then;
Step 4, utilize power set to drive the elastic grinding device to move (as shown in Figure 2) along the normal orientation of the milling marking, add polishing particles (diamond dust) to grinding pad and between by means of external structure, grind off by the gully that forms by the cutter marking on the abradant surface by abradant surface.
In addition, when fine grinding,, can carry out repeatedly fine grinding as requested in order to raise the efficiency.Usually, the grain graininess of the abrasive particle of fine grinding first is big, and the levigated abrasive particle of back reduces one by one.
Embodiment two, as shown in Figure 6 and Figure 7, a kind of elasticity fine grinding device that is used for aspheric surface part, comprise elastomeric element 1, fit in the grinding pad 2 of described elastomeric element one side and be located at the matrix 3 of described elastomeric element 1 opposite side, the material of described matrix 3 is a nylon, described matrix 3 is provided with the curved surface 30 that contacts with described elastomeric element, the radius of curvature of described curved surface 30 is 0.95～1.05 with aspheric surface part by the ratio of the nearly ball radius of curvature of abradant surface, and the assurance grinding pad is fitted in the course of the work with by abradant surface constantly;
Described grinding pad 2 is the thick zinc metal sheet of 0.5～1.5mm; As shown in Figure 7, described grinding pad 2 is provided with 4 uniform diamond hole 2b, and described diamond hole makes abrasive particle can be evenly distributed on grinding pad and by between the abradant surface, provides drain passageway for lapping rejects simultaneously; On the other hand, in the process of lapping, grinding pad and can be produced a large amount of frictional heat between the abradant surface, the diamond hole of offering on the grinding pad helps entering of cooling water, is beneficial to heat radiation.
As shown in Figure 5, the surface local of described grinding pad is provided with the gully, makes abrasive particle can be evenly distributed on grinding pad and by between the abradant surface, improves the fine grinding quality.
The material of described elastomeric element 1 is EVA, and this material has good buffering, and resist chemical, life-span be long, nontoxic, do not absorb water.The present invention utilizes the elasticity of EVA material to compensate grinding pad and is misfitted the gap in zone between the abradant surface.Described elastomeric element 1 is a cylinder, and its diameter is 6 with the ratio of height, guarantee the fine grinding dish motion stabilization, do not turn over.
Cohering on the described grinding pad 2 has polishing body 4, and it is a polished leather, and by cohering above-mentioned polishing body, the present invention can be used as burnishing device and uses.
Claims (9)
1. an elasticity fine grinding device that is used for aspheric surface part comprises matrix (3), elastomeric element (1) and grinding pad (2), it is characterized in that: described grinding pad (2) is made of the sheet metal that fits in described elastomeric element (1) one side.
2. elasticity fine grinding device according to claim 1, it is characterized in that: described matrix (3) is located at the opposite side of described elastomeric element (1), described matrix (3) is provided with the curved surface (30) that contacts with described elastomeric element, and the radius of curvature of described curved surface (30) and aspheric surface part are 0.95～1.05 near the ratio of ball radius of curvature by abradant surface.
3. elasticity fine grinding device according to claim 1 and 2 is characterized in that: described elastomeric element (1) is a cylinder, and its diameter is 6～20 with the ratio of height.
4. elasticity fine grinding device according to claim 1 and 2 is characterized in that: described grinding pad (2) is the thick zinc metal sheet of 0.5～1.5mm.
5. elasticity fine grinding device according to claim 1 and 2 is characterized in that: described grinding pad (2) is gone up uniform at least 3 vacancy sections.
6. elasticity fine grinding device according to claim 5 is characterized in that: described grinding pad (2) constitutes petal grinding pad by provided thereon 4 uniform U-shaped otch (2a).
7. elasticity fine grinding device according to claim 5 is characterized in that: the outline of described grinding pad (2) which is provided with 4 uniform diamond holes (2b) for circular.
8. elasticity fine grinding device according to claim 1 and 2 is characterized in that: the material of described elastomeric element (1) is EVA.
9. elasticity fine grinding device according to claim 1 and 2 is characterized in that: cohering on the described grinding pad (2) has polishing body (4), and it is polished leather or polyurethane polishing disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101186184A CN102198623A (en) | 2011-05-09 | 2011-05-09 | Elastic fine grinding device for aspherical part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101186184A CN102198623A (en) | 2011-05-09 | 2011-05-09 | Elastic fine grinding device for aspherical part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102198623A true CN102198623A (en) | 2011-09-28 |
Family
ID=44659751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101186184A Pending CN102198623A (en) | 2011-05-09 | 2011-05-09 | Elastic fine grinding device for aspherical part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102198623A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443201A (en) * | 2017-08-01 | 2017-12-08 | 上海现代先进超精密制造中心有限公司 | A kind of fast and convenient automatic grinding aspherical frock and method |
| CN110450014A (en) * | 2019-08-15 | 2019-11-15 | 中国科学院长春光学精密机械与物理研究所 | A kind of high frequency micro amplitude vibration device applied to the complex-curved ultrafast polishing of heavy caliber |
| CN110587477A (en) * | 2019-10-25 | 2019-12-20 | 业成科技（成都）有限公司 | Automatic grinding and cleaning equipment |
| CN110732932A (en) * | 2019-10-23 | 2020-01-31 | 中国科学院光电技术研究所 | Large-caliber integral optical element multi-robot precision machining system and method |
| CN112238379A (en) * | 2019-07-16 | 2021-01-19 | 施耐德两合公司 | Polishing tool and device for polishing workpiece |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583111A (en) * | 1966-08-22 | 1971-06-08 | David Volk | Lens grinding apparatus |
| CN87211735U (en) * | 1987-08-08 | 1988-07-13 | 黑龙江省眼病防治研究所 | Sm zinc sheet for grinding astigmatic spectacle-lenses |
| CN1192710A (en) * | 1995-06-16 | 1998-09-09 | 普通光学有限公司 | Method and apparatus for optical polishing |
| JP2000317797A (en) * | 1999-05-10 | 2000-11-21 | Canon Inc | Polishing tool |
| CN1732067A (en) * | 2002-11-26 | 2006-02-08 | 柯马杜股份有限公司 | Rotary tool for shaping a form in a mineral material, such as sapphire, and, in particular, for shaping an optical surface in a watch crystal |
| CN1772436A (en) * | 2004-11-09 | 2006-05-17 | 精工爱普生株式会社 | Elastic polishing tool and lens polishing method |
| CN101905439A (en) * | 2009-06-04 | 2010-12-08 | 宋健民 | Polishing pad with internal in-situ generated gap and gap generating method |
-
2011
- 2011-05-09 CN CN2011101186184A patent/CN102198623A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3583111A (en) * | 1966-08-22 | 1971-06-08 | David Volk | Lens grinding apparatus |
| CN87211735U (en) * | 1987-08-08 | 1988-07-13 | 黑龙江省眼病防治研究所 | Sm zinc sheet for grinding astigmatic spectacle-lenses |
| CN1192710A (en) * | 1995-06-16 | 1998-09-09 | 普通光学有限公司 | Method and apparatus for optical polishing |
| JP2000317797A (en) * | 1999-05-10 | 2000-11-21 | Canon Inc | Polishing tool |
| CN1732067A (en) * | 2002-11-26 | 2006-02-08 | 柯马杜股份有限公司 | Rotary tool for shaping a form in a mineral material, such as sapphire, and, in particular, for shaping an optical surface in a watch crystal |
| CN1772436A (en) * | 2004-11-09 | 2006-05-17 | 精工爱普生株式会社 | Elastic polishing tool and lens polishing method |
| CN101905439A (en) * | 2009-06-04 | 2010-12-08 | 宋健民 | Polishing pad with internal in-situ generated gap and gap generating method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443201A (en) * | 2017-08-01 | 2017-12-08 | 上海现代先进超精密制造中心有限公司 | A kind of fast and convenient automatic grinding aspherical frock and method |
| CN112238379A (en) * | 2019-07-16 | 2021-01-19 | 施耐德两合公司 | Polishing tool and device for polishing workpiece |
| CN110450014A (en) * | 2019-08-15 | 2019-11-15 | 中国科学院长春光学精密机械与物理研究所 | A kind of high frequency micro amplitude vibration device applied to the complex-curved ultrafast polishing of heavy caliber |
| CN110732932A (en) * | 2019-10-23 | 2020-01-31 | 中国科学院光电技术研究所 | Large-caliber integral optical element multi-robot precision machining system and method |
| CN110587477A (en) * | 2019-10-25 | 2019-12-20 | 业成科技（成都）有限公司 | Automatic grinding and cleaning equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100431790C (en) | Processing method of aspherical optical element of optical glass and silicon monocrystal | |
| CN104385064B (en) | The heavy-calibre planar processing method that a kind of numerical control small tool combines with glass polishing machine | |
| CN102198623A (en) | Elastic fine grinding device for aspherical part | |
| JP4234991B2 (en) | Manufacturing method of glass substrate for information recording medium and glass substrate for information recording medium manufactured by the manufacturing method | |
| JP5334428B2 (en) | Manufacturing method of glass substrate for magnetic disk | |
| Walker et al. | New results extending the precessions process to smoothing ground aspheres and producing freeform parts | |
| JP6490842B2 (en) | Grinding tool, glass substrate manufacturing method, magnetic disk glass substrate manufacturing method, and magnetic disk manufacturing method | |
| CN101332584A (en) | Grinding method of sheet metal | |
| CN105081895A (en) | High-precision machining method for chalcogenide glass lens | |
| JP2010076013A (en) | Polishing method of rotary grindstone and polishing apparatus, grinding grindstone and grinding apparatus using the grindstone | |
| CN104969292A (en) | Method for manufacturing magnetic disk substrate, and polishing pad used in manufacture of magnetic disk substrate | |
| CN102267106B (en) | Disc type movable polishing grinding tool | |
| JP6156967B2 (en) | Glass substrate manufacturing method, magnetic disk manufacturing method, and glass substrate end surface polishing apparatus | |
| CN205817619U (en) | A kind of diamond disk | |
| JP2007098483A (en) | Glass substrate for magnetic disk, manufacturing method of magnetic disk and end face grinder | |
| JP4387708B2 (en) | Polishing method and manufacturing method for plastic spectacle lens | |
| CN108356608B (en) | A kind of method of deterministic theory Wolter-I type optics mandrel | |
| JP5312911B2 (en) | Manufacturing method of glass substrate for magnetic disk and manufacturing method of magnetic disk | |
| CN209021907U (en) | A kind of optical glass prism special diamond resin emery wheel | |
| CN110238751A (en) | Sapphire wafer abrasive disk and grinding device | |
| CN219337383U (en) | Trimmer of polishing pad | |
| CN107378652A (en) | A kind of processing method of eccentric bent moon cylindrical mirror | |
| KR101555874B1 (en) | Conditioner having dot portion for polishing cmp pad and method of manufaturing thereof | |
| Kadzevičius et al. | Investigation of polishing characteristics for aspherical lenses manufacturing | |
| US3287861A (en) | Abrasive articles and method of making abrasive articles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110928 |