GB1226780A – – Google Patents
GB1226780A – – Google Patents
Info
Publication number
GB1226780A
GB1226780A
GB1226780DA
GB1226780A
GB 1226780 A
GB1226780 A
GB 1226780A
GB 1226780D A
GB1226780D A
GB 1226780DA
GB 1226780 A
GB1226780 A
GB 1226780A
Authority
GB
United Kingdom
Prior art keywords
elements
plates
planetary gears
gears
lapping
Prior art date
1967-08-02
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.)
Expired
Application number
Priority date (The priority date 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 date listed.)
1967-08-02
Filing date
1968-07-30
Publication date
1971-03-31
1968-07-30
Application filed
filed
Critical
1971-03-31
Publication of GB1226780A
publication
Critical
patent/GB1226780A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B24B37/00—Lapping machines or devices; Accessories
B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
B24B37/08—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for double side lapping
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
B24B37/00—Lapping machines or devices; Accessories
B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
B24B37/07—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool
B24B37/10—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping
B24B37/105—Lapping machines or devices; Accessories designed for working plane surfaces characterised by the movement of the work or lapping tool for single side lapping the workpieces or work carriers being actively moved by a drive, e.g. in a combined rotary and translatory movement
Abstract
1,226,780. Lapping. MONTECATINI EDISON S.p.A. 30 July, 1968 [2 Aug., 1967], No. 36251/68. Heading B3D. A machine for lapping elements of crystalline structured brittle material, such as semiconductors, quartz and the like comprises planetary gears 5 which are disposed between annular lapping plates 1, 2, have means 8 for receiving the elements, and are engaged by an outer stationary gear 3 and an inner rotatable gear 4. The gears 3, 4 are in the form of chains or rollers and the chain 3 is carried by a casing 13 in which is a motor 9 driving through a gear unit 10, a hollow shaft 11 coupled to a disc 12 secured to the chain 4 which imparts rotation to the planetary gears 5. The gears 5 have apertures 8 for receiving the elements and are disposed between the upper and lower lapping plates of cast iron. The lower plate 2 is carried by supports 18 from a worm nut 15 rotatable by a crank 17 to adjust the height of the plate. The upper plate 1 is carried by arms 23 on a cylinder 20 slidable on a hollow support 19, oil pressure supplied to the cylinder controlling the pressure applied by the upper plate to the elements. An annular reservoir 24 containing an abrasive suspension is rotated by a motor 25. Stationary agitators extend into the reservoir which is connected by an adjustable valve 30 to a pipe which delivers the suspension to a groove 32 in the upper plate, the groove being connected by ducts to the space between the plates 1, 2. The thickness of the elements being lapped is indicated on a mechanical, pneumatic or electronic indicator having arms which measure the relative positions of the upper and lower plates. The elements may be positioned in and removed from the recesses 8 in the planetary gears 5 by a vacuum workholding device which is connected to a vacuum pump and operated by manually opening and closing a suction inlet. The annular lapping plates may be trued by turning on a lathe or by replacing the planetary gears 5 with gears loosely containing abrasive rings. A known machine is described in which the planetary gears are disposed between an outer and an inner gear rotating at different angular velocities and the annular plates may be rotated.
GB1226780D
1967-08-02
1968-07-30
Expired
GB1226780A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
IT811009
1967-08-02
Publications (1)
Publication Number
Publication Date
GB1226780A
true
GB1226780A
(en)
1971-03-31
Family
ID=11125841
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1226780D
Expired
GB1226780A
(en)
1967-08-02
1968-07-30
Country Status (1)
Country
Link
GB
(1)
GB1226780A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP1762338A1
(en)
*
2005-09-08
2007-03-14
Shinano Electric Refining Co., Ltd.
Abrasive member and method for the resurfacing of a lapping plate
CN107498455A
(en)
*
2017-10-25
2017-12-22
德清凯晶光电科技有限公司
A kind of path transfer formula erratic star wheel for cylindrical wafer grinding
CN107571113A
(en)
*
2017-07-17
2018-01-12
重庆市巨吉机电设备有限公司
A kind of sanding burr frock
CN108296949A
(en)
*
2017-12-12
2018-07-20
安徽省光明粮油工业有限公司
A kind of part intrados manual grinding device
1968
1968-07-30
GB
GB1226780D
patent/GB1226780A/en
not_active
Expired
Cited By (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP1762338A1
(en)
*
2005-09-08
2007-03-14
Shinano Electric Refining Co., Ltd.
Abrasive member and method for the resurfacing of a lapping plate
US7637802B2
(en)
2005-09-08
2009-12-29
Shinano Electric Refining Co., Ltd.
Lapping plate resurfacing abrasive member and method
CN107571113A
(en)
*
2017-07-17
2018-01-12
重庆市巨吉机电设备有限公司
A kind of sanding burr frock
CN107498455A
(en)
*
2017-10-25
2017-12-22
德清凯晶光电科技有限公司
A kind of path transfer formula erratic star wheel for cylindrical wafer grinding
CN108296949A
(en)
*
2017-12-12
2018-07-20
安徽省光明粮油工业有限公司
A kind of part intrados manual grinding device
CN108296949B
(en)
*
2017-12-12
2020-08-25
安徽省光明粮油工业有限公司
Manual grinding device for inner arc surface of part
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Legal Events
Date
Code
Title
Description
1971-08-11
PS
Patent sealed
1974-02-20
PLNP
Patent lapsed through nonpayment of renewal fees
