GB1424272A - Copying machine tools - Google Patents
Copying machine toolsInfo
- Publication number
- GB1424272A GB1424272A GB625673A GB625673A GB1424272A GB 1424272 A GB1424272 A GB 1424272A GB 625673 A GB625673 A GB 625673A GB 625673 A GB625673 A GB 625673A GB 1424272 A GB1424272 A GB 1424272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- workpiece
- cam
- assembly
- arm
- follower
- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape
- B24B21/165—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape for vanes or blades of turbines, propellers, impellers, compressors and the like
-
- 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)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
1424272 Abrasive belt machines CENTRAX Ltd 8 Feb 1974 [8 Feb 1973] 6256/73 Heading B3D A copying machine tool comprises means 8, 11 for mounting a cam 9 and workpiece for rotary movement in synchronism, a movable member 16 carrying a follower 17 for engagement with the cam and further mounting means 41 for means 19 for removing material from the workpiece, the further mounting means being connected to the movable member by yielding means 43 which permits the further mounting means to move relative to the movable member when the material-removing means encounters resistance from the workpiece. As described the machine is used for polishing the blades of turbines or compressors by means of an abrasive belt. The machine has a headstock 2 which is reciprocatable along guideways 3 on a bed 1 by an hydraulic device 4 and carries an hydraulic motor 7 for rotating a pair of face plates 8, 11 in synchronism. The face plate 8 has a clamp for the cam 9 having the desired shape of the workpiece, and the plate 11 carries the workpiece. The spindle carrying the face plate 11 also carries a cam 12 which co-operates with a follower 13 controlling a valve which varies the instantaneous speed of rotation of the face plates. A belt drive assembly 16 is mounted for pivotal movement about an axis 20 on a block 15 fixed to the bed 1, the assembly being rocked about the axis by a pneumatic device 21 to engage a follower wheel 17, carried by a mount 18 on the assembly, with the cam 9. The abrasive belt 19 is entrained about a drive pulley 23, driven by an hydraulic motor having a shaft coincident with the pivot axis 20, idler pulleys 25, 26, 27, a contact wheel 28 and a further idler 29. Pulley 27 is mounted for adjustment along a slot 31, and pulley 26 is mounted on an arm 32 which is adjustable along a slot 34 and acted on by a tensioning cylinder device 35. Movement of the arm 32 in the event of breakage of the abrasive belt actuates a limit switch 37 to stop the operation of the machine. The contact wheel 28 is mounted on an arm 41 which is pivotable about the axis 20 and is biased towards the workpiece by a spring-pressed plunger assembly 43 mounted on the belt-drive assembly 16. The upper end of the arm 41 abuts one end of a finger 46 mounted on a pivot 50 perpendicular to the pivot axis 20. The other end of the finger abuts an adjustable stop 47 on the assembly and has a cam surface 52 for actuating a micro switch 54. In operation, the cam 9 and workpiece are rotated at the speed determined by cam 12 as the headstock is reciprocated by the device 4. The pneumatic cylinder 21 pivots the assembly 16 at a controlled rate to engage the follower wheel 17 with the cam 9. Full pressure is then applied. If the workpiece is oversize, the spring assembly 43 between the contact wheel arm 41 and assembly 16 permits the contact wheel to yield relative to the assembly 16 and follower wheel. Material is removed from the workpiece until the finger 46 is rocked by the contact arm and actuates the switch 54, the axes of the follower wheel, contact wheel and pivot 20 then being in line. A pneumatic circuit is described for automatically controlling the operation of the machine.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB625673A GB1424272A (en) | 1973-02-08 | 1973-02-08 | Copying machine tools |
US439730A US3925937A (en) | 1973-02-08 | 1974-02-05 | Copying machine tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB625673A GB1424272A (en) | 1973-02-08 | 1973-02-08 | Copying machine tools |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1424272A true GB1424272A (en) | 1976-02-11 |
Family
ID=9811233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB625673A Expired GB1424272A (en) | 1973-02-08 | 1973-02-08 | Copying machine tools |
Country Status (2)
Country | Link |
---|---|
US (1) | US3925937A (en) |
GB (1) | GB1424272A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2721244C2 (en) * | 1977-05-11 | 1983-04-14 | Maschinenfabrik Zuckermann GmbH, 1181 Wien | Machine for grinding contoured workpieces using the copying process |
US4175358A (en) * | 1977-12-15 | 1979-11-27 | Ido Bischeri | Plunge-grinder, especially for grinding the cams of engine timing shafts |
US4686796A (en) * | 1986-06-20 | 1987-08-18 | Giebmanns Karl Heinz | Method and apparatus for improved polishing of turbine blades |
CN102303275B (en) * | 2011-08-11 | 2013-12-04 | 西北工业大学 | Flexible polishing mechanism for blade profile abrasive belt |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2091456A (en) * | 1936-10-15 | 1937-08-31 | Chester J Rybick | Cam grinding machine |
US2334938A (en) * | 1943-03-29 | 1943-11-23 | Entpr Engine & Foundry Company | Cam grinding machine |
US2415062A (en) * | 1946-01-24 | 1947-01-28 | Norton Co | Cam grinding apparatus |
US2606406A (en) * | 1950-03-21 | 1952-08-12 | Niles Bement Pond Co | Blade finishing machine |
US2641089A (en) * | 1951-07-24 | 1953-06-09 | Fouquet Eugene | Method and means for the reproduction by grinding |
US2722787A (en) * | 1952-07-08 | 1955-11-08 | Hallewell Harold Stuart | Apparatus for producing shaped members and/or for checking the shape of members |
US2754637A (en) * | 1954-07-01 | 1956-07-17 | Curtiss Wright Corp | Shrouded turbine blade airfoil grinder |
-
1973
- 1973-02-08 GB GB625673A patent/GB1424272A/en not_active Expired
-
1974
- 1974-02-05 US US439730A patent/US3925937A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3925937A (en) | 1975-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |