GB1200284A - Improvements in or relating to lapping machines - Google Patents
Improvements in or relating to lapping machinesInfo
- Publication number
- GB1200284A GB1200284A GB39389/68A GB3938968A GB1200284A GB 1200284 A GB1200284 A GB 1200284A GB 39389/68 A GB39389/68 A GB 39389/68A GB 3938968 A GB3938968 A GB 3938968A GB 1200284 A GB1200284 A GB 1200284A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- lapping
- disc
- secured
- rings
- 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.)
- Expired
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
- 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
- B24B37/102—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 able to rotate freely due to a frictional contact with the lapping tool
-
- 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
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/047—Grinding heads for working on plane surfaces
-
- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/017—Devices or means for dressing, cleaning or otherwise conditioning lapping tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
1,200,284. Lapping. SPEEDFAM CORP. 16 Aug., 1968 [14 Sept., 1967], No. 39389/68. Heading B3D. A lapping machine comprises: (i) framework; (ii) a lapping disc rotatably mounted about a vertical axis on the framework; (iii) a contour control member having a lower horizontal surface engageable with the lapping disc; (iv) a vertical floating spindle; (v) means mounting said spindle on the framework above said contour control member; (vi) coupling means connecting the lower end of said spindle to said contour control member; and (vii) adjustment means for selectively engaging and raising said spindle whereby to withdraw said contour control member from engagement with the lapping disc. A lapping machine comprises framework, including a lower housing section 12, an upright rear-end housing section 14 and an upper overhanging housing section 16 having a lower horizontal wall 18. The section 12 provides support for an annular lapping disc 20, driven by an electric motor 24 through a reducer 26, and for a staging table 22 surrounding the disc. Mounted in the section 16 are four pneumatic assemblies 28, two on one side of the machine and two on the other side, each assembly including a cylinder 30 and a piston-rod 32, secured to a pressure plate 34 fitting with slight clearance within truing and retaining rings 36 resting on the disc. The rings 36 slightly overlap the inner and outer peripheries of the annular lapping surface of the disc. Workpieces are confined within the rings 36 and below the plates 34 therein. A mixture of oil carrier and abrasive particles is fed to the disc through spouts 38. To supplement the normal dressing action of the rings 36, there is provided independent contour control apparatus 40. This comprises a tubular easing 42 extending through and secured to the wall 18, and having threaded in its lower end an axially adjusted sleeve 44. A floating spindle 46 extending through the casing 42 and sleeve 44 has a radial shoulder 48. A ball-bearing assembly 50 secured to the upper part of the spindle 46 is axially movable within the casing 42. A ball-bearing assembly 52 secured in the sleeve 44 is axially movable along the lower part of the spindle 46. A contour control member 54, connected by coupling means 56 to the spindle 46, has in its lower face a central recess 58 and a concentric recess 60 in which is secured, e.g. by epoxy cement, a wear ring 62, e.g. of boron carbide. The coupling means 56 comprises a ball 66 located in a conical seat 64 in the member 54 and engaged by a flexible metal diaphragm 68 secured to the member 54; a collar 70 is secured to the central portion of the diaphragm and to the spindle 46. The member 54 is positioned circumferentially intermediate of two rings 36 and slightly overlapping the outer periphery of the lapping disc 20. The spindle 46 is driven by a belt 82 passing round a crown pulley 80 on the shaft of an electric motor 72. When corrective treatment of the lapping surface is necessary, the sleeve 44 is threaded axially downwardly permitting the lower surface of the member 54 to engage the lapping surface; the bearing assembly 52 is withdrawn from engagement with the shoulder 48, whereby the full weight of the spindle 46 bears downwardly on the member 54, giving the desired contact pressure, e.g. up to 10 pounds per sq. in. The motor 72 is energized. Corrective treatment is carried out at intervals and for varying periods as necessary. Reference has been directed by the Comptroller to Specification 1,067,807.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66785367A | 1967-09-14 | 1967-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1200284A true GB1200284A (en) | 1970-07-29 |
Family
ID=24679927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB39389/68A Expired GB1200284A (en) | 1967-09-14 | 1968-08-16 | Improvements in or relating to lapping machines |
Country Status (8)
Country | Link |
---|---|
US (1) | US3515115A (en) |
CH (1) | CH483297A (en) |
DE (1) | DE1777161A1 (en) |
ES (1) | ES358131A1 (en) |
FR (1) | FR1579339A (en) |
GB (1) | GB1200284A (en) |
IL (1) | IL30577A0 (en) |
NL (1) | NL6812457A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5214996A (en) * | 1975-07-25 | 1977-02-04 | Hitachi Ltd | Method for halting polishing work |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4270314A (en) * | 1979-09-17 | 1981-06-02 | Speedfam Corporation | Bearing mount for lapping machine pressure plate |
US5010692A (en) * | 1987-12-22 | 1991-04-30 | Sintobrator, Ltd. | Polishing device |
EP0812656A3 (en) * | 1992-09-24 | 1998-07-15 | Ebara Corporation | Dressing device for dressing a polishing pad in a polishing machine |
US6932684B1 (en) * | 2004-03-08 | 2005-08-23 | Roy H. Hunt | Reciprocal blade lapping machine |
CN106078494A (en) * | 2016-07-28 | 2016-11-09 | 苏州赫瑞特电子专用设备科技有限公司 | A kind of dish structure in the integrated roof platform of grinder or buffing machine |
CN106944932A (en) * | 2017-05-02 | 2017-07-14 | 中国工程物理研究院机械制造工艺研究所 | Overturn trimmer |
CN108500089B (en) * | 2018-04-02 | 2023-07-14 | 合肥市远大轴承锻造有限公司 | Post-forging shaping device for bearing ring assembly |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2079076A (en) * | 1931-04-03 | 1937-05-04 | Libbey Owens Ford Glass Co | Truing apparatus for grinding wheels |
NL86330C (en) * | 1950-12-09 | |||
US2696067A (en) * | 1952-12-03 | 1954-12-07 | Leach Banner | Grinding machine |
US3035377A (en) * | 1958-12-22 | 1962-05-22 | Bovensiepen Hans-Friedrich | Lapping machine |
US3300907A (en) * | 1963-09-27 | 1967-01-31 | Asaeda | Apparatus for flat surface superfinishing |
US3290832A (en) * | 1964-03-09 | 1966-12-13 | Engelhard Hanovia Inc | Apparatus for grinding |
-
1967
- 1967-09-14 US US667853A patent/US3515115A/en not_active Expired - Lifetime
-
1968
- 1968-08-16 GB GB39389/68A patent/GB1200284A/en not_active Expired
- 1968-08-20 IL IL30577A patent/IL30577A0/en unknown
- 1968-09-02 NL NL6812457A patent/NL6812457A/xx unknown
- 1968-09-06 FR FR1579339D patent/FR1579339A/fr not_active Expired
- 1968-09-10 CH CH1357668A patent/CH483297A/en not_active IP Right Cessation
- 1968-09-13 DE DE19681777161 patent/DE1777161A1/en active Pending
- 1968-09-13 ES ES358131A patent/ES358131A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5214996A (en) * | 1975-07-25 | 1977-02-04 | Hitachi Ltd | Method for halting polishing work |
Also Published As
Publication number | Publication date |
---|---|
DE1777161A1 (en) | 1971-04-01 |
NL6812457A (en) | 1969-03-18 |
CH483297A (en) | 1969-12-31 |
IL30577A0 (en) | 1968-10-24 |
FR1579339A (en) | 1969-08-22 |
ES358131A1 (en) | 1970-04-01 |
US3515115A (en) | 1970-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |