GB725924A - Improvements relating to the control of the electric driving motors of grinding machines - Google Patents
Improvements relating to the control of the electric driving motors of grinding machinesInfo
- Publication number
- GB725924A GB725924A GB30187/53A GB3018753A GB725924A GB 725924 A GB725924 A GB 725924A GB 30187/53 A GB30187/53 A GB 30187/53A GB 3018753 A GB3018753 A GB 3018753A GB 725924 A GB725924 A GB 725924A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- generator
- grinding
- potentiometer
- winding
- 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
- 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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
725,924. Control of two D.C. motors. FORTUNA - WERKE SPEZIALMASCHINEN - FABRIK AKT.-GES. Nov. 2, 1953 [Nov. 8, 1952], No. 30187/53. Class 38 (3) [Also in Group XXIII] A grinding machine has a grinding-wheel motor 8 and a low-power motor 27 for driving the workpiece, a Ward Leonard generator 4 being provided for alternatively supplying the motor 27 during the grinding operation or energizing the motor 8 for trueing the wheel or like low-speed operation. An A.C. motor 1 drives the machine 4 as well as a self-excited D.C. generator 2, and, during the grinding operation this generator supplies the armature of the motor 8 in addition to the field windings 5, 28, 24, of the machines 4, 27, 8. The field winding 5 is then connected to a potentiometer 6, whilst the winding 24 is excited through resistor 25 and potentiometer 26, and the winding 28 receives the full voltage of the generator. When switches A-E are changed over by a common member 29, the motor 8 is connected to the generator 4 and the motor 27 is disconnected if desired. The field winding 5 of the Ward Leonard generator is now connected to a potentiometer 7. The generator 4 may be replaced by another form of low power amplifier such as an amplidyne unit, valve amplifier, or magnetic amplifier
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE725924X | 1952-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB725924A true GB725924A (en) | 1955-03-09 |
Family
ID=6635086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30187/53A Expired GB725924A (en) | 1952-11-08 | 1953-11-02 | Improvements relating to the control of the electric driving motors of grinding machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB725924A (en) |
-
1953
- 1953-11-02 GB GB30187/53A patent/GB725924A/en not_active Expired
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