GB981608A - Improvements in or relating to supporting mechanism for machine tool feed members - Google Patents
Improvements in or relating to supporting mechanism for machine tool feed membersInfo
- Publication number
- GB981608A GB981608A GB1259861A GB1259861A GB981608A GB 981608 A GB981608 A GB 981608A GB 1259861 A GB1259861 A GB 1259861A GB 1259861 A GB1259861 A GB 1259861A GB 981608 A GB981608 A GB 981608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- shaft
- motor
- solenoid
- valve
- 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
- B24B47/206—Drives or gearings; Equipment therefor relating to feed movement for centreless grinding machines; for machines comprising work supports, e.g. steady rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5468—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed parallelly by a single rotating pair
-
- 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
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
-
- 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
- B24B41/02—Frames; Beds; Carriages
-
- 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
- B24B5/06—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 cylindrical surfaces internally
-
- 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
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
981,608. Change-speed and clutch control. EARL A. THOMPSON MANUFACTURING CO. April 7, 1961 [April 18, 1960], No. 12598/61. Headings F2D and F2L. [Also in Division B3] The drive unit of a grinding machine includes a motor 246 driving, through belt 250, a shaft 248 which drives, through grass 252, 256, 260, a gear 262. The shaft 248 and gear 262 drive the input members of hydraulically engaged, spring released clutches 254, 264 the output members of which are secured to a shaft having a worm 268 and a brake drum 270, a spring-biased hydraulic motor 272 being provided for engaging the brake. The worm 268 drives a worm-wheel 274 on a cam-shaft 275. The gear 262 drives a pump 276 delivering oil to a combined accumulator and relief valve comprising a spring-loaded piston 278 and also supplying control valves 280, 282, 284. Valve 280 is shifted by the solenoid 286 and valves 282, 284 are shifted by adjustable cams 288, 290 on the camshaft 275. An hydraulic cylinder 292 holds the valve 282 in its shifted position until it is released by the shifting of valve 284. Energization of solenoid 286 disengages the brake and engages the clutch 264 to start slow speed rotation of the camshaft; thereafter the cam 288 shifts the valve 282 to disengage the clutch 264 and engage the clutch 254 so that the cam-shaft rotates at fast speed; still later, the cam 290 shifts the valve 284 to release the valve 282 which disengages the clutch 254 and engages the clutch 264 so that the camshaft rotates at slow speed. As long as the solenoid 286 remains energized, the cam-shaft rotates alternately at slow and fast speeds. The motor 246 and the solenoid 286 are controlled by an electric circuit including a master relay 294, with start switch 296 and stop switch 298, controlling the motor 246 and a cycle control relay 300, with start switch 302 and stop switch 304. The normally open contacts of relay 300, which are of the make-beforebreak type, control energization of the solenoid 286 directly; the normally closed contacts of relay 300 also control the solenoid 286 but are in series with a switch 306 opened once during each revolution of the cam-shaft, so that when the stop switch 304 is operated at any point in the rotation of the cam-shaft, relay 300 is de-energized but solenoid 286 remains energized until the switch 306 opens at a predetermined stopping point. Operation of stop switch 298 de-energizes solenoid 286 immediately regardless of the point in the cycle and also deenergizes motor 246. The cam-shaft 275 drives hydraulic pulsator devices a-g each comprising a cam 308 on the cam-shaft actuating a single acting pistoncylinder unit 312, 310 communicating by a conduit 318 with one of the hydraulic motors of the machine. The device b actuates a motor 320 for axially reciprocating the grinding wheel, the device d actuates the motor for rapidly advancing a carrier, and the device f actuates the motor for slowly feeding the carrier. The return strokes of the motors are effected by pressure fluid from a source RO, e.g. a gas, spring or weight-loaded accumulator, a variable displacement pump with pressure compensation or a fixed displacement pump with relief valve, this pressure fluid also acting on the piston 122 which biases the carrier away from the grinding wheel. The devices a, c, e, g actuate various other automatic fluid motor actuated mechanisms, such as loading mechanism for automatically feeding workpieces sequentially to their work position prior to grinding and removing them after grinding. The rapid portion of each rotation of the camshaft 275 is used for the non-work performing functions of the grinding cycle and the slower portion when work is being performed by the grinding wheel. Specification 981,609 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22720A US3043059A (en) | 1960-04-18 | 1960-04-18 | Precision feed mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
GB981608A true GB981608A (en) | 1965-01-27 |
Family
ID=21811086
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1259861A Expired GB981608A (en) | 1960-04-18 | 1961-04-07 | Improvements in or relating to supporting mechanism for machine tool feed members |
GB840663A Expired GB981609A (en) | 1960-04-18 | 1961-04-07 | Improvements in or relating to workpiece feed mechanisms |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB840663A Expired GB981609A (en) | 1960-04-18 | 1961-04-07 | Improvements in or relating to workpiece feed mechanisms |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1294846B (en) |
GB (2) | GB981608A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104227513A (en) * | 2013-06-08 | 2014-12-24 | 宁波卡伦特电器有限公司 | Motor shaft bearing guard coreless mill processing device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4178719A (en) * | 1978-07-20 | 1979-12-18 | Cincinnati Milacron Inc. | Centerless grinding machine |
DE59100270D1 (en) * | 1990-03-23 | 1993-09-16 | Agathon Ag Maschf | CENTERLESS ROUND GRINDING MACHINE. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE447765A (en) * | 1942-10-30 | |||
GB659349A (en) * | 1948-05-05 | 1951-10-24 | Genevoise Instr Physique | Improvements in and relating to a friction reducing device for machines or machine tools with slide tracks |
DE1008966B (en) * | 1954-07-20 | 1957-05-23 | Kurt Konrad Loewenfeld Dipl In | Device for fine adjustment of machine parts, which are moved on straight or round guides |
DE1061222B (en) * | 1955-08-08 | 1959-07-09 | Cincinnati Milling Machine Co | Device for centerless grinding of workpieces |
-
1961
- 1961-04-07 GB GB1259861A patent/GB981608A/en not_active Expired
- 1961-04-07 GB GB840663A patent/GB981609A/en not_active Expired
- 1961-04-13 DE DE1961T0019971 patent/DE1294846B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104227513A (en) * | 2013-06-08 | 2014-12-24 | 宁波卡伦特电器有限公司 | Motor shaft bearing guard coreless mill processing device |
CN104227513B (en) * | 2013-06-08 | 2016-12-28 | 宁波卡伦特电器有限公司 | Motor shaft bearing guard centreless mill process equipment |
Also Published As
Publication number | Publication date |
---|---|
GB981609A (en) | 1965-01-27 |
DE1294846B (en) | 1969-05-08 |
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