GB626643A - Grinding wheel feeding mechanism - Google Patents
Grinding wheel feeding mechanismInfo
- Publication number
- GB626643A GB626643A GB16307/46A GB1630746A GB626643A GB 626643 A GB626643 A GB 626643A GB 16307/46 A GB16307/46 A GB 16307/46A GB 1630746 A GB1630746 A GB 1630746A GB 626643 A GB626643 A GB 626643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- feed
- relay
- solenoid
- grinding wheel
- 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
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
626,643. Hydraulically-operated grinding-machines. NORTON CO. May 29, 1946, No, 16307. Convention date, July 28, 1945. [Class 60] [Also in Group XXIX] A grinding-machine having a rotatable grinding wheel and a transversely movable slide therefor comprises means including a piston and cylinder rapidly to move said slide, means including a dash pot feed regulator to slow down the rapid approaching to a relatively slow continuous feeding movement, electrical control means rendered operative after a predetermined slow feed to produce a fine intermittent feed, means to stop the forward feed, and a time delay relay operatively connected to return said slide and grinding wheel to an inoperative position after a predetermined period of dwell. There may be a fine continuous plunge-cut feed before the forward feed is stopped. The grinding wheel slide 22 is moved by a piston 36 working in a cylinder 35 under the control of a valve 43. The sequence of operations is as follows:- 1. Rapid approach of grinding wheel to work. The operator rocks control lever 155 to close push button start switch 157, so energizing relay 160 which energizes solenoid 50 to move valve 43 to the left. The piston 36 moves to the left at a rate determined by the setting of a throttle valve 78 in the exhaust line. 2. Relatively slow continuous feed (shoulder feed). Before the grinding wheel contacts the work, a collar 61 on the rod of the piston 36 engages a sleeve 58 in contact with dashpot pistons 56, 57; the rate of movement is now determined by the setting of a needle valve 64 in the outlet from the dash pot cylinders. 3. Fine intermittent feed (rounding up). When screw 51 carried by the sleeve 58 engages and closes limit switch 52, relays 161, 162 are energized. Relay 161 energizes solenoid 68 to close valve 67, thus stopping further exhaust from the dashpot cylinders through the needle valve 64. Relay 162 energizes solenoid 93 to close valve 92 and also energizes solenoid 131 to open valve 130, thus admitting pressure liquid to a hydraulic reciprocating motor 119 constructed as in Specification 535,227, [Group XXIX] ; the continuous reciprocation of the rod 122 of the motor causes, by tappets 104, 105, intermittent shifting of a valve 101 containing a shuttle valve 102, whereby intermittent exhaust of predetermined amounts of fluid from a cylinder chamber 90 of a cylinder 83 is obtained; the cylinder 83 contains a piston 82 having a rod 81 which is thus withdrawn in steps from a cylinder 80 which receives fluid from the dashpot cylinders. 4. Fine continuous feed (body feed). A gauge head 145 is placed in operative position in engagement with the work piece. When screw 53 carried by the sleeve 58 engages and opens limit switch 54, the relay 162 is de-energized; the solenoid 131 is thus de-energized allowing the valve 130 to close under spring action, to stop the intermittent infeed of the grinding wheel. The solenoid 93 is also de-energized allowing valve 92 to open under spring action; exhaust from the cylinder chamber 90 now passes continuously through the valve 92 and throttle valve 94, the setting of which determines the rate of movement. 5. Dwell (sparking-out or finish). When the work is reduced to predetermined size contacts in the gauge 145 close to energize relay 149; this energizes the solenoid 93 to close the valve 92 and stop the feed, and also initiates action of time delay relay 150. 6. Rapid withdrawal. After predetermined time interval has elapsed, time relay 150 de-energizes relay 160 which deenergizes solenoid 50 whereby valve 43 is moved to the right by a spring; the piston 36 is thus moved rapidly to the right. The dash pot system can be replenished by opening a valve 140.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US626643XA | 1945-07-28 | 1945-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB626643A true GB626643A (en) | 1949-07-19 |
Family
ID=22044018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16307/46A Expired GB626643A (en) | 1945-07-28 | 1946-05-29 | Grinding wheel feeding mechanism |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB626643A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2864211A (en) * | 1948-08-26 | 1958-12-16 | Landis Tool Co | Method of plunge grinding |
-
1946
- 1946-05-29 GB GB16307/46A patent/GB626643A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2864211A (en) * | 1948-08-26 | 1958-12-16 | Landis Tool Co | Method of plunge grinding |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB763153A (en) | Improvements in or relating to precision grinding machines | |
GB626643A (en) | Grinding wheel feeding mechanism | |
GB782432A (en) | Apparatus for fully automatic control of the tool feed in grinding machines, e.g. internal grinding machines | |
GB1031384A (en) | Grinding machine | |
US2448921A (en) | Hydraulically operated feeding mechanism | |
GB741834A (en) | Improvements in or relating to a honing tool | |
US2378903A (en) | Grinding machine | |
GB689049A (en) | Improvements relating to grinding machines | |
US3173337A (en) | Hydraulic variable speed feed mechanism for machine tools and the like | |
US2127856A (en) | Grinding machine | |
US2419133A (en) | Grinding wheel feeding mechanism | |
GB937129A (en) | Adhesive dispensing apparatus | |
GB498295A (en) | Fluid actuated wheel feeding mechanism for grinding or abrading machines | |
GB1149886A (en) | Improvements in and relating to machine tools | |
GB626176A (en) | Improvements in precision grinding machines | |
US2006570A (en) | Grinding machinery | |
GB1094097A (en) | Improvements in and relating to grinding machines | |
GB1355469A (en) | Automatic thickness regulating device for skin-shaving machines | |
SU563225A1 (en) | Device for breaking the chip during sharpening | |
GB599500A (en) | Improved grinding machine with wheel dresser | |
US2019487A (en) | Feed regulator for machine tools | |
US2919520A (en) | Infeed control device | |
SU150380A1 (en) | A device for diamond beskopirnuyu edit the shaped grinding wheel on the machine for grinding the crankshaft | |
GB200853A (en) | Improvements in and relating to grinding or like machines | |
GB666043A (en) | Improvements in or relating to tool bars for slotting machines, planing machines, and shaping machines |