GB724241A - Improvements in or relating to grinding machines - Google Patents
Improvements in or relating to grinding machinesInfo
- Publication number
- GB724241A GB724241A GB22285/52A GB2228552A GB724241A GB 724241 A GB724241 A GB 724241A GB 22285/52 A GB22285/52 A GB 22285/52A GB 2228552 A GB2228552 A GB 2228552A GB 724241 A GB724241 A GB 724241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- cam shaft
- switch
- relay
- energize
- 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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
- B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
724,241. Control of several motors. BRYANT CHUCKING GRINDER CO. Sept. 4,1952 [Oct. 5, 1951], No. 22285/52. Class 38 (3) [Also in Group XXIII] Four electric motors 2M, 3M, 4M, 5M for driving the operative parts of a grinding machine (see Group XXIII) are controlled by switches and relays arranged in a low-voltage control circuit so as to enable the machine to carry out an automatic cycle. The control circuit is connected through a transformer 171 with the supply to the motors and includes relays 2m, 3m, 4m, 5m for the respective motors. The closure of a switch 175 acts through the relay 2m to energize the motor 2M to rotate the grinding wheel, and the closure of a second switch 190 acts through the relay 3m to energize the motor 3M to drive a main cam shaft. Cams on this shaft then close a switch LS4 to energize a relay 4m to drive the work spindle motor 4M and also effect controlled movements of the grinding wheel and work carriages. A further cam on the shaft also actuates a switch LS6 to de-energize a relay CR, the contacts 205, 215, 216 of which then serve, respectively, to (a) close the circuit of the relay 5m to drive the motor 5M for rotating a second cam shaft, (b) de-energize a clutch 165 between the motor 3M and the main cam shaft, and (c) apply a brake 166 to the latter motor. Cams on the second cam shaft then effect further controlled movements of the work carriage, followed by actuation of a switch LS7 whereby the relay CR is energized to stop the motor 5M and restart the drive of the first cam shaft by the motor 3M. Further movements of the two carriages under the control of the main cam shaft follow until the switch LS6 changes over the drive to the second cam shaft which, after providing additional movement of the work carriage, actuates the switch LS7 so that the main cam shaft takes over to return the carriages to their inoperative positions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US724241XA | 1951-10-05 | 1951-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB724241A true GB724241A (en) | 1955-02-16 |
Family
ID=22107458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22285/52A Expired GB724241A (en) | 1951-10-05 | 1952-09-04 | Improvements in or relating to grinding machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB724241A (en) |
-
1952
- 1952-09-04 GB GB22285/52A patent/GB724241A/en not_active Expired
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