GB933625A - Grinding machine - Google Patents
Grinding machineInfo
- Publication number
- GB933625A GB933625A GB21632/60A GB2163260A GB933625A GB 933625 A GB933625 A GB 933625A GB 21632/60 A GB21632/60 A GB 21632/60A GB 2163260 A GB2163260 A GB 2163260A GB 933625 A GB933625 A GB 933625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheelhead
- fixed
- shaft
- movement
- plunger
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (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
933,625. Grinding. CINCINNATI MILLING MACHINE CO. June 5, 1962 [Nov. 22, 1961], No. 21632/62. Class 60. [Also in Group XXIX] A grinding machine comprises a base structure having means to support and move a workpiece in a predetermined path, a wheelhead having a rotatable grinding wheel carried thereby slidably received on said base structure for movement toward and away from said predetermined path, first means operable to move said wheelhead a fixed distance, second means operable to move said wheelhead a selected distance, and third means operable in response to a predetermined movement of the workpiece along said predetermined path to effect a predetermined movement of said wheelhead. A wheelhead 10 is mounted on ways 12, 14 in an intermediate member 16 pivotally adjustable on the machine base 18. The wheelhead includes a grinding wheel 20 rotated by a motor 22 mounted on an upper portion 28 of the wheelhead. A wheelguard 26 extends laterally from the portion 28 and a truing mechanism 24 is mounted on the wheelguard behind the grinding wheel. The portion 28 is pivotally adjustable about a horizontal shaft 31 extending through yokes 30 on a lower portion 32 of the wheelhead so that the grinding wheel may be tilted for grinding a helical groove on a workpiece, the portion 28 being clamped in adjusted position by stud bolts 33, 34, 35. A workpiece is rotatably supported on a table 36 longitudinally movable on the base 18. A fixture 38 pivotally mounted on the table may be swung, as the table is moved longitudinally, by mechanism contained in a housing 40 fixed on the base 18 so that a crowned roll as well as a straight roll may be ground. The fixture is adapted to support the entire regulating wheel housing of a centreless grinding machine so that the regulating wheel therein occupies the position 39. The regulating wheel is rotated by a motor 42 and drive unit 44 supported on the table. Front and rear hand wheels 46, 48 are mechanically connected for manual movement of the table and motor means are also provided for automatic table movement. A bracket 50 fixed to the side of the table 36 holds a cam 52 for engagement by an hydraulic tracing mechanism 54 fixed to the base 18 below the wheelhead and connected for movement of the wheelhead on the base in accordance with the contour of the cam and the movement of the table. A rack 60 fixed to the underside of the wheelhead portion 32 is engaged by a pinion 56 on the end of a drive shaft 58 journalled in the base 18 on the axix about which the intermediate member 16 is pivotally adjustable. Supported on the shaft 58 is a rapid advance motor 62 having a worm wheel 64 integral therewith. The motor 62 comprises an annular housing 66 with an inwardly-extending wall member 68 fixed therein and a paddle 70 fixed to the drive shaft 58, interdrilling 72, 74 in the shaft 58 supplying pressure fluid to one side or the other of the paddle 70 to swing it from one side to the other of the wall 68. The worm wheel 64 meshes with a worm gear 76 integral with a shaft 78 mounted in a portion 80 of the machine base for rotation and limited axial movement. Pressure fluid supplied through a conduit 86 acts on a piston 88 to urge the end of the shaft 78 against a pin 90. The pin 90 is fixed in a member 92 slidable in a member 94 fixed to the side of the base 18 below the wheelhead 10. Movement of the slide 92 is limited by a pin 96 engaging a slot 100 in the slide. A roller 102 on the slide 92 engages a cam 106 fixed in a bracket 108 fixed to the body 110 of a tracing valve 112. The valve contains a plunger 126 having a stem 134 on which is fixed a collar 140 acted on by a spring 136 so as to urge the plunger 126 to the right-hand end of the valve whereby operating ports 122, 124 are connected respectively to pressure port and return port. The plunger 126 may be moved against the spring 136, to connect the operating ports 122, 124 respectively to return port and pressure port, by shifting a tracing plunger 144 axially movable on balls 146, one end of the plunger engaging the end of the stem 134 and the other end of the plunger holding a tracing rib 150 adapted to engage the cam 52 on the table 36. A member 152 extending from the valve body 110 carries a piston 162, 164 working in a cylinder 158 forming part of the tracing housing 156. The left-hand and right-hand sides of the piston are respectively connected by passages 166, 168 to the operating ports 122, 124. Thus the valve body 110, and therefore the cam 106, is caused to follow the changes in axial position of the tracer plunger 144 and the shape of the cam 52 determines the position of the plunger 144 as the table 36 is moved across the peripheral surface of the grinding wheel 20. The position of the cam 106 determines the axial position of the shaft 78, the worm 76 acting as a rack and the worm wheel 64 acting as a pinion to rotate the entire motor 62 with the shaft 58 thereby changing the position of the wheelhead 10. The shaft 78 is connected by a coupling 178, permitting axial movement of the shaft 78 by the tracing mechanism 54, to a shaft 176 on which is fixed a gear 174 rotated by a handwheel 172. A motor may be provided for rotating the shaft 176.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US154199A US3109263A (en) | 1961-11-22 | 1961-11-22 | Precision grinding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB933625A true GB933625A (en) | 1963-08-08 |
Family
ID=22550397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21632/60A Expired GB933625A (en) | 1961-11-22 | 1962-06-05 | Grinding machine |
Country Status (2)
Country | Link |
---|---|
US (1) | US3109263A (en) |
GB (1) | GB933625A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107471097A (en) * | 2017-09-26 | 2017-12-15 | 东台市伟锋机械厂 | Once-forming valve grinder |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US909895A (en) * | 1908-06-13 | 1909-01-19 | Pratt & Whitney Co | Grinding-machine. |
US991345A (en) * | 1910-06-08 | 1911-05-02 | Edward Wilson Mitchel | Grinding-machine. |
DE645409C (en) * | 1933-09-02 | 1937-05-28 | Gerhard Schaudt Dr Ing | Equipment on grinding machines for quick and fine transverse adjustment of the grinding wheel slide |
US2241634A (en) * | 1940-04-12 | 1941-05-13 | Cincinnati Grinders Inc | Automatic infeed mechanism for grinding machines |
US2646651A (en) * | 1949-02-15 | 1953-07-28 | Blaw Knox Co | Hydraulic roll grinder |
US2803095A (en) * | 1954-02-16 | 1957-08-20 | United Tool & Die Company | Hydraulic tracer control |
-
1961
- 1961-11-22 US US154199A patent/US3109263A/en not_active Expired - Lifetime
-
1962
- 1962-06-05 GB GB21632/60A patent/GB933625A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107471097A (en) * | 2017-09-26 | 2017-12-15 | 东台市伟锋机械厂 | Once-forming valve grinder |
Also Published As
Publication number | Publication date |
---|---|
US3109263A (en) | 1963-11-05 |
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