GB1140242A - Improvements in or relating to control equipment - Google Patents
Improvements in or relating to control equipmentInfo
- Publication number
- GB1140242A GB1140242A GB3741366A GB3741366A GB1140242A GB 1140242 A GB1140242 A GB 1140242A GB 3741366 A GB3741366 A GB 3741366A GB 3741366 A GB3741366 A GB 3741366A GB 1140242 A GB1140242 A GB 1140242A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sequence
- polishing
- control
- pressure
- control means
- 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
- B24B21/006—Machines or devices using grinding or polishing belts; Accessories therefor for special purposes, e.g. for television tubes, car bumpers
-
- 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
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/03—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of endless chain conveyors
- B23Q7/035—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of endless chain conveyors on which work holders are fixed
-
- 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
- B24B19/26—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads
- B24B19/265—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads for bumpers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
1,140,242. Grinding. WILMOT-BREEDEN Ltd. 22 Aug., 1966 [22 May, 1965], No.37413/66 Heading B3D. A control means for selectively controlling the pressure between a polishing head 8 and a contoured object 7 in accordance with the surface zone thereof to be polished comprises position responsive means 27, . . . 32 which produces an electrical position signal as the head transverses each boundary between adjacent zones, a sequence control circuit to which the succession of position signals are fed and which delivers output signals in sequence as each position signal is received, and a pressure controlling device which acts to control the pressure selectively in accordance with the prevailing output signal. As described, the control means is applied to a machine which may have several polishing heads 2a.... 2d, for polishing bumper bars, each bar 7 being mounted on a jig 6 movable along a continuous track 4 to present the bars to the polishing heads. Each head consists of an abrasive belt 10 running over a pulley 11, a drive wheel, and a laminated felt jockey wheel 12 which is raised and lowered by a pneumatic double acting cylinder 17 under the control of its associated control means. The polishing heads are identical but may be of different grades and angled by various amounts for polishing different regions of the bumpers. Each control means consists of a plurality of detectors 27, ... 32 comprising yokes having spaced arms 34, 35, Fig. 4, arm 34 having an aperture for a reed switch 36, and arm 35 having a magnet 37 which normally maintains switch 36 closed. The detectors are positioned along the track at the boundaries of zones of the bars, and are actuated in sequence by a magnetic shield 38 fixed to each jig 6 and arranged to pass between the arms of the detectors so that the switches are opened in sequence. The switches are connected to a sequence control circuit consisting of " and " and " latch " stages as described in Specification 1,140,241, the output of which is connected to a pneumatic circuit having a plurality of solenoid operated valves and pressure regulators to control the associated pneumatic cylinder 17 so that the abrasion belt is engaged with the bumper at the predetermined pressure required to polish each zone. In an alternative embodiment, a single detector 80, Fig. 6, which is actuated by a magnetic shield 83 fixed to conveyer 82 and is provided with a shaft encoder driven from the conveyer, the encoder producing pulses proportional to the speed of the conveyer which are fed to a circuit having a ring counter and selector switches for producing the position signals for feeding to the sequence and control circuit controlling the associated polishing head.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3741366A GB1140242A (en) | 1965-05-22 | 1965-05-22 | Improvements in or relating to control equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3741366A GB1140242A (en) | 1965-05-22 | 1965-05-22 | Improvements in or relating to control equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1140242A true GB1140242A (en) | 1969-01-15 |
Family
ID=10396307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3741366A Expired GB1140242A (en) | 1965-05-22 | 1965-05-22 | Improvements in or relating to control equipment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1140242A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107253122A (en) * | 2017-08-14 | 2017-10-17 | 彭波 | A kind of efficient numerically controlled grinding machine |
CN114131408A (en) * | 2021-12-22 | 2022-03-04 | 阮思群 | Automatic workpiece replacing device on vertical numerical control machine tool |
CN116117676A (en) * | 2023-04-17 | 2023-05-16 | 河北新泰鸿汽车零部件有限公司 | Part processing polishing machine and polishing process |
-
1965
- 1965-05-22 GB GB3741366A patent/GB1140242A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107253122A (en) * | 2017-08-14 | 2017-10-17 | 彭波 | A kind of efficient numerically controlled grinding machine |
CN114131408A (en) * | 2021-12-22 | 2022-03-04 | 阮思群 | Automatic workpiece replacing device on vertical numerical control machine tool |
CN116117676A (en) * | 2023-04-17 | 2023-05-16 | 河北新泰鸿汽车零部件有限公司 | Part processing polishing machine and polishing process |
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