US20060281394A1 - Apparatus and process for cylindrically grinding workpieces - Google Patents
Apparatus and process for cylindrically grinding workpieces Download PDFInfo
- Publication number
- US20060281394A1 US20060281394A1 US11/402,773 US40277306A US2006281394A1 US 20060281394 A1 US20060281394 A1 US 20060281394A1 US 40277306 A US40277306 A US 40277306A US 2006281394 A1 US2006281394 A1 US 2006281394A1
- Authority
- US
- United States
- Prior art keywords
- workpieces
- groove
- holding tool
- grinding
- positioning
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
- B24B9/146—Accessories, e.g. lens mounting 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Definitions
- the present invention generally relates to cylindrical grinding apparatuses and processes and, more particularly, to a holder for holding workpieces during a cylindrically grinding process and a holding method for such a process.
- optical elements such as camera lenses and spectacles are in used in cylindrical form.
- original optical workpieces i.e. lens blanks
- these original optical workpieces have to be cylindrically ground before use.
- a typical example of a contemporary cylindrical grinding apparatus is a centering apparatus.
- the centering apparatus typically includes a pair of holders for holding the original workpiece, where each holder has a hollow chamber communicating with a surface of the holder.
- the holder can hold the workpiece on its surface by using an air pump pumping the hollow chamber, a grinding wheel is then used to cylindrically grind the workpiece.
- the centering apparatus can only cylindrically grind one piece of workpiece at a time.
- FIGS. 6-7 show an apparatus for cylindrically grinding more than one workpiece at a time.
- the apparatus includes a first holding tool 30 and a second holding tool 40 .
- the first holding tool 30 defines a holding groove 32
- the second holding tool 40 defines a semicircular groove 42 .
- the holding groove 32 and the semicircular groove 42 are both for securing the workpieces 50 in the holding tools 30 , 40 .
- a plurality of workpieces 50 are placed in the holding groove 32 of the first holding tool 30 .
- the workpieces 50 are bonded together using adhesive.
- a grinding wheel is used to grind a portion of the workpieces 50 projecting out of the holding groove 32 into a semicircular shape.
- the semicircular portion 51 of the workpieces 50 is transferred to the semicircular groove 42 of the second holding tool 40 .
- the other portion of the workpieces 50 is also ground into a semicircular shape using the grinding wheel. The final result being that the workpieces 50 are ground to a cylindrical shape.
- the adhesive When transferring the workpieces 50 from the first holding tool 30 to the second holding tool 40 , the adhesive should be dissolved so that the workpieces 50 can be taken out of the first holding tool 30 . However, the workpieces 50 will not be compact in the second holding tool 40 because the workpieces 50 will be disarrayed whilst the adhesive is dissolved.
- an apparatus for cylindrically grinding workpieces includes a first holding tool for positioning pre-grinding workpieces and a second holding tool for positioning partially ground workpieces (i.e. workpieces which have been ground on one side only).
- the first holding tool defines a first groove for containing the pre-grinding workpieces to be partially ground and the second bonding defines a second groove for containing the partially ground workpieces.
- a stopping board connects one side of the second groove, and the stopping board has a projection for transferring the partially ground workpieces from the first groove to the second groove.
- a process for grinding workpieces can be used wherein a plurality of pre-grinding workpieces are positioned in a first groove of a first holding tool with a first portion of the pre-grinding workpieces projecting out of the first groove.
- the first portion of the pre-grinding workpieces is partially ground into a first predetermined shape.
- a second holding tool is provided, the second holding tool defining a second groove and a stopping board connecting to one side of the second groove, the stopping board having a projection.
- the second holding tool is then placed on the partially ground workpieces with the first portion in the second groove.
- the second holding tool is then moved with the projection pushing the workpieces a predetermined distance.
- the position of the two holding tools is then reversed, with the first holding tool being placed on the second holding tool.
- the first holding tool is then moved until the partially ground workpieces completely leave the first groove, a second portion of the workpieces then projects out of the second groove, this second portion is then ground into a second predetermined shape thus completing the grinding process.
- FIG. 1 is a schematic view of a first holding tool of an apparatus for cylindrically grinding workpieces in accordance with a preferred embodiment
- FIG. 2 is a schematic view of a second holding tool of the apparatus for cylindrically grinding workpieces in accordance with a preferred embodiment
- FIG. 3 is a schematic view of a step of the process for cylindrically grinding workpieces in accordance with a preferred embodiment
- FIG. 4 is a schematic view of another step subsequent to the step in FIG. 3 ;
- FIG. 5 is a schematic view of a further step subsequent to the step in FIG.4 ;
- FIG. 6 is a schematic view of a first holding tool for cylindrically grinding workpieces from the prior art.
- FIG. 7 is a schematic view of a second holding tool for cylindrically grinding workpieces from the prior art.
- an apparatus for cylindrically grinding workpieces 60 includes a first holding tool 100 , a second holding tool 200 , and a grinding wheel 300 .
- the holding tools 100 , 200 are configured for bonding workpieces 60 .
- the first holding tool 100 defines a first groove 12 for containing pre-grinding workpieces 60 .
- the pre-grinding workpieces 60 can be optical elements having a non-cylindrical shape. In this preferred embodiment, the workpieces 60 are in substantially square form. Therefore, the first groove 12 is configured to have a V-shaped cross section, for compliantly receiving the pre-grinding workpieces 60 therein. Understandably, the cross section of the first groove 12 can be of other shape depending on the form of the pre-grinding workpieces 60 .
- the pre-grinding worpieces 60 are partially ground on the first groove 12 using the grinding wheel 300 .
- a first stopping board 13 detachably connects one side of the first holding tool 100 by means of bolt or adhesive.
- the first stopping board 13 connects the first holding tool 100 by means of cooperation of a first bolt 14 and a screw thread 15 (as shown in FIG. 3 ).
- the first stopping board 13 has a first projection 131 for preventing workpieces 60 moving out of the first groove 12 during the grinding process.
- the second holding tool defines a second groove 22 for containing the partially ground workpieces 60 .
- the second groove 22 is configured to have a semicircular cross section.
- the partially ground workpieces 60 are ground to be cylinder shape on the second groove 22 .
- a second stopping board 23 detachably connects one side of the second holding tool 200 using a second bolt 24 .
- the second stopping board 23 has a second projection 231 used for preventing workpieces 60 moving out of the second groove 22 during grinding process, and for transferring the partially ground workpieces 60 from the first groove 12 to the second groove 22 .
- an exemplary process for cylindrically grinding workpieces 60 includes the steps of
- a stack of workpieces 60 (i.e. pre-grinding workpieces) are placed in the first groove 12 of the first holding tool 100 .
- a first portion 61 of the pre-grinding workpieces 60 projects out of the first groove 12 .
- the first portion 61 of the pre-grinding workpieces 60 is partially ground to a semicircular shape.
- the first stopping board 13 is detached from the first holding tool 100 .
- the second holding tool 200 are placed on the partially ground workpieces 60 with the first portion 61 in the second groove 22 .
- the second holding tool 200 is moved with the second projection 231 pushing the workpieces 60 a predetermined distance along the second groove 22 .
- the first holding tool 100 is moved toward the projection 231 until the partially ground workpieces 60 completely leave the first groove 12 .
- a second portion 62 of the workpieces 60 projects out of the second groove 22 .
- the second portion 62 of the workpieces 60 is ground to a semicircular shape. Thereby, a plurality of cylindrical workpieces 60 are obtained.
- the process can easily and compactly transfer workpieces 60 from the first groove 12 to the second groove 22 using the stopping board 23 , which can promote the working efficiency of the cylindrical process.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention generally relates to cylindrical grinding apparatuses and processes and, more particularly, to a holder for holding workpieces during a cylindrically grinding process and a holding method for such a process.
- 2. DISCUSSION OF THE RELATED ART
- Usually, optical elements such as camera lenses and spectacles are in used in cylindrical form. However, original optical workpieces (i.e. lens blanks) are most easily manufactured in the form of a square. Therefore, these original optical workpieces have to be cylindrically ground before use.
- A typical example of a contemporary cylindrical grinding apparatus is a centering apparatus. The centering apparatus typically includes a pair of holders for holding the original workpiece, where each holder has a hollow chamber communicating with a surface of the holder. The holder can hold the workpiece on its surface by using an air pump pumping the hollow chamber, a grinding wheel is then used to cylindrically grind the workpiece. However, the centering apparatus can only cylindrically grind one piece of workpiece at a time.
-
FIGS. 6-7 show an apparatus for cylindrically grinding more than one workpiece at a time. The apparatus includes afirst holding tool 30 and asecond holding tool 40. Thefirst holding tool 30 defines aholding groove 32, and thesecond holding tool 40 defines asemicircular groove 42. Theholding groove 32 and thesemicircular groove 42 are both for securing theworkpieces 50 in theholding tools workpieces 50 are placed in theholding groove 32 of thefirst holding tool 30. Secondly, theworkpieces 50 are bonded together using adhesive. Thirdly, a grinding wheel is used to grind a portion of theworkpieces 50 projecting out of theholding groove 32 into a semicircular shape. Fourthly, thesemicircular portion 51 of theworkpieces 50 is transferred to thesemicircular groove 42 of thesecond holding tool 40. Fifthly, the other portion of theworkpieces 50 is also ground into a semicircular shape using the grinding wheel. The final result being that theworkpieces 50 are ground to a cylindrical shape. - When transferring the
workpieces 50 from thefirst holding tool 30 to thesecond holding tool 40, the adhesive should be dissolved so that theworkpieces 50 can be taken out of thefirst holding tool 30. However, theworkpieces 50 will not be compact in thesecond holding tool 40 because theworkpieces 50 will be disarrayed whilst the adhesive is dissolved. - Therefore, an apparatus and a process for cylindrically grinding workpieces which can easily and compactly transfer the workpieces is desired.
- In one aspect, an apparatus for cylindrically grinding workpieces includes a first holding tool for positioning pre-grinding workpieces and a second holding tool for positioning partially ground workpieces (i.e. workpieces which have been ground on one side only). The first holding tool defines a first groove for containing the pre-grinding workpieces to be partially ground and the second bonding defines a second groove for containing the partially ground workpieces. A stopping board connects one side of the second groove, and the stopping board has a projection for transferring the partially ground workpieces from the first groove to the second groove.
- In another aspect of the preferred embodiment, a process for grinding workpieces can be used wherein a plurality of pre-grinding workpieces are positioned in a first groove of a first holding tool with a first portion of the pre-grinding workpieces projecting out of the first groove. The first portion of the pre-grinding workpieces is partially ground into a first predetermined shape. A second holding tool is provided, the second holding tool defining a second groove and a stopping board connecting to one side of the second groove, the stopping board having a projection. The second holding tool is then placed on the partially ground workpieces with the first portion in the second groove. The second holding tool is then moved with the projection pushing the workpieces a predetermined distance. The position of the two holding tools is then reversed, with the first holding tool being placed on the second holding tool. The first holding tool is then moved until the partially ground workpieces completely leave the first groove, a second portion of the workpieces then projects out of the second groove, this second portion is then ground into a second predetermined shape thus completing the grinding process.
- Other advantages and novel features will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
- Many aspects of the apparatus can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present apparatus. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
-
FIG. 1 is a schematic view of a first holding tool of an apparatus for cylindrically grinding workpieces in accordance with a preferred embodiment; -
FIG. 2 is a schematic view of a second holding tool of the apparatus for cylindrically grinding workpieces in accordance with a preferred embodiment; -
FIG. 3 is a schematic view of a step of the process for cylindrically grinding workpieces in accordance with a preferred embodiment; -
FIG. 4 is a schematic view of another step subsequent to the step inFIG. 3 ; -
FIG. 5 is a schematic view of a further step subsequent to the step inFIG.4 ; -
FIG. 6 is a schematic view of a first holding tool for cylindrically grinding workpieces from the prior art; and -
FIG. 7 is a schematic view of a second holding tool for cylindrically grinding workpieces from the prior art. - Referring to
FIGS. 1-2 , in a preferred embodiment, an apparatus for cylindrically grindingworkpieces 60, includes afirst holding tool 100, asecond holding tool 200, and agrinding wheel 300. Theholding tools bonding workpieces 60. - The
first holding tool 100 defines afirst groove 12 for containingpre-grinding workpieces 60. Thepre-grinding workpieces 60 can be optical elements having a non-cylindrical shape. In this preferred embodiment, theworkpieces 60 are in substantially square form. Therefore, thefirst groove 12 is configured to have a V-shaped cross section, for compliantly receiving thepre-grinding workpieces 60 therein. Understandably, the cross section of thefirst groove 12 can be of other shape depending on the form of thepre-grinding workpieces 60. Thepre-grinding worpieces 60 are partially ground on thefirst groove 12 using the grindingwheel 300. Afirst stopping board 13 detachably connects one side of thefirst holding tool 100 by means of bolt or adhesive. In this preferred embodiment, thefirst stopping board 13 connects thefirst holding tool 100 by means of cooperation of afirst bolt 14 and a screw thread 15 (as shown inFIG. 3 ). Thefirst stopping board 13 has afirst projection 131 for preventingworkpieces 60 moving out of thefirst groove 12 during the grinding process. - The second holding tool defines a
second groove 22 for containing the partiallyground workpieces 60. Thesecond groove 22 is configured to have a semicircular cross section. The partiallyground workpieces 60 are ground to be cylinder shape on thesecond groove 22. Asecond stopping board 23 detachably connects one side of thesecond holding tool 200 using asecond bolt 24. The second stoppingboard 23 has asecond projection 231 used for preventingworkpieces 60 moving out of thesecond groove 22 during grinding process, and for transferring the partially groundworkpieces 60 from thefirst groove 12 to thesecond groove 22. - Referring to
FIGS. 3-5 , an exemplary process for cylindrically grindingworkpieces 60 includes the steps of - (1) A stack of workpieces 60 (i.e. pre-grinding workpieces) are placed in the
first groove 12 of thefirst holding tool 100. Afirst portion 61 of thepre-grinding workpieces 60 projects out of thefirst groove 12. - (2) The
pre-grinding workpieces 60 are bonded together in the first groove using adhesive. - (3) The
first portion 61 of thepre-grinding workpieces 60 is partially ground to a semicircular shape. - (4) The first stopping
board 13 is detached from thefirst holding tool 100. Thesecond holding tool 200 are placed on the partially groundworkpieces 60 with thefirst portion 61 in thesecond groove 22. - (5) The
second holding tool 200 is moved with thesecond projection 231 pushing the workpieces 60 a predetermined distance along thesecond groove 22. - (6) The two
holding tools first holding tool 100 being on thesecond holding tool 200. - (7) The
first holding tool 100 is moved toward theprojection 231 until the partially groundworkpieces 60 completely leave thefirst groove 12. Asecond portion 62 of theworkpieces 60 projects out of thesecond groove 22. - (8) The
second portion 62 of theworkpieces 60 is ground to a semicircular shape. Thereby, a plurality ofcylindrical workpieces 60 are obtained. - The process can easily and compactly transfer
workpieces 60 from thefirst groove 12 to thesecond groove 22 using the stoppingboard 23, which can promote the working efficiency of the cylindrical process. - It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples here before described merely being preferred or exemplary embodiments of the invention.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200510035285.3 | 2005-06-10 | ||
CNB2005100352853A CN100488714C (en) | 2005-06-10 | 2005-06-10 | Rolling jig and rolling method |
Publications (2)
Publication Number | Publication Date |
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US7144306B1 US7144306B1 (en) | 2006-12-05 |
US20060281394A1 true US20060281394A1 (en) | 2006-12-14 |
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ID=37480571
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US11/402,773 Expired - Fee Related US7144306B1 (en) | 2005-06-10 | 2006-04-12 | Apparatus and process for cylindrically grinding workpieces |
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US (1) | US7144306B1 (en) |
CN (1) | CN100488714C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021053735A (en) * | 2019-09-30 | 2021-04-08 | リンテック株式会社 | Polishing jig and polishing jig set |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN2873414Y (en) * | 2005-11-04 | 2007-02-28 | 鸿富锦精密工业(深圳)有限公司 | Round rolling device |
CN1978129B (en) * | 2005-12-02 | 2010-11-10 | 鸿富锦精密工业(深圳)有限公司 | Round rolling apparatus |
CN100528472C (en) * | 2006-01-06 | 2009-08-19 | 鸿富锦精密工业(深圳)有限公司 | Circle rolling clamp and circle rolling method |
TWI345508B (en) * | 2006-01-20 | 2011-07-21 | Hon Hai Prec Ind Co Ltd | Cylindrical grinding apparatus and method of cylindrical grinding with the same |
CN101564820B (en) * | 2008-04-22 | 2011-12-21 | 鸿富锦精密工业(深圳)有限公司 | Rolling equipment and rolling method |
CN104289937B (en) * | 2014-09-30 | 2016-09-14 | 苏州速腾电子科技有限公司 | A kind of circular shaft drilling jig |
JP6464128B2 (en) * | 2016-10-05 | 2019-02-06 | ファナック株式会社 | Work fixing device |
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US1336928A (en) * | 1919-05-10 | 1920-04-13 | Taft Peirce Mfg Co | Method and apparatus for alining work on v-blocks and the like for magnetic chucks |
US4445678A (en) * | 1982-05-24 | 1984-05-01 | George Irwin S | Precision aligned split V-block |
US4583432A (en) * | 1984-11-01 | 1986-04-22 | Amp Incorporated | Supercentering workpiece holder |
US5305557A (en) * | 1992-09-14 | 1994-04-26 | Warncke Lee A | Punch and die regrind fixture |
US6554265B2 (en) * | 2000-04-11 | 2003-04-29 | Randall C. Andronica | Universal workholding V fixture convertable to other applications |
Family Cites Families (3)
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CN2312113Y (en) * | 1997-11-24 | 1999-03-31 | 林煌隆 | Work bench with adjustable holder |
CN2495410Y (en) * | 2001-05-31 | 2002-06-19 | 顺德市顺达电脑厂有限公司 | Work-clamping means for grinding machine |
CN2656075Y (en) * | 2003-10-08 | 2004-11-17 | 长春第一光学有限公司 | Large hollow shaft external grinding gripping device |
-
2005
- 2005-06-10 CN CNB2005100352853A patent/CN100488714C/en not_active Expired - Fee Related
-
2006
- 2006-04-12 US US11/402,773 patent/US7144306B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1336928A (en) * | 1919-05-10 | 1920-04-13 | Taft Peirce Mfg Co | Method and apparatus for alining work on v-blocks and the like for magnetic chucks |
US4445678A (en) * | 1982-05-24 | 1984-05-01 | George Irwin S | Precision aligned split V-block |
US4583432A (en) * | 1984-11-01 | 1986-04-22 | Amp Incorporated | Supercentering workpiece holder |
US5305557A (en) * | 1992-09-14 | 1994-04-26 | Warncke Lee A | Punch and die regrind fixture |
US6554265B2 (en) * | 2000-04-11 | 2003-04-29 | Randall C. Andronica | Universal workholding V fixture convertable to other applications |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021053735A (en) * | 2019-09-30 | 2021-04-08 | リンテック株式会社 | Polishing jig and polishing jig set |
Also Published As
Publication number | Publication date |
---|---|
CN1876318A (en) | 2006-12-13 |
CN100488714C (en) | 2009-05-20 |
US7144306B1 (en) | 2006-12-05 |
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