GB650383A - Improvements in or relating to grinding machines - Google Patents
Improvements in or relating to grinding machinesInfo
- Publication number
- GB650383A GB650383A GB9084/48A GB908448A GB650383A GB 650383 A GB650383 A GB 650383A GB 9084/48 A GB9084/48 A GB 9084/48A GB 908448 A GB908448 A GB 908448A GB 650383 A GB650383 A GB 650383A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- sleeve
- balls
- valve
- unclamping
- 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
- 239000012530 fluid Substances 0.000 abstract 2
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/30—Compensating imbalance
- G01M1/36—Compensating imbalance by adjusting position of masses built-in the body to be tested
-
- 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
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
650,383. Grinding-machines. CINCINNATI MILLING MACHINE CO. March 31, 1948, No. 9084. Convention date, April 12, 1947. [Class 60] [Also in Groups XXIV, XXVI and XXXIV] A grinding-machine comprises a spindle 12 journalled in a support 16, means 56 for rigidly clamping a resiliently mounted journal for one end of the spindle, an automatic balancing mechanism carried by the spindle and including hydraulically-releasable balancing elements 98, and means 62 for effecting successive releasing movements of a control device which is movable into one position for unclamping the journal, and into a second position for unclamping the balancing elements hydraulically. An assembly unit carrying the spindle 12 is mounted in a bore 14 in the machine frame 10. The spindle 12 is supported at its forward end by a bushing 77 and rocking shoes 78 carried by a sleeve 53 which is normally clamped in the bore 14 by the pin 56. The sleeve 53 is unclamped by manually turning the pinion 62 to move a cam-bar 59 against a stop 71 to release the pin 56. The sleeve 53 is then resiliently supported from the sleeve 16 by a series of rods 79 and tubes 80. The rear end of the spindle is supported to pivot about a centre 102 by spherically-seated bearings 21,22 and rocking shoes 18. A driving pulley 31 is mounted at the rear end of the spindle about the centre 102. The spindle 12 is bored at 88 to receive a piston 90 which is acted upon by a spring 92 to clamp the three balancing elements or balls 98 against a resilient washer 97. Pressure fluid is supplied by a pump P, the minimum pressure being controlled by a valve 48 and the unclamping of the sleeve 53 and the balls 98 by a valve 50. The valve 50 is actuated by a cam 51 on the end of the pinion shaft 62. Initial movement of the shaft 62 therefore releases the sleeve 53 and partially releases the valve 50; further movement depressed the stop 70 against a spring 76 allowing a spring 52 to raise the pressure in the fluid system and move the piston 90 to release the balls 98. The spindle, being rotated above its critical speed, is balanced automatically by the balls 98 which, together with the sleeve 53 are then reclamped. The pump P also serves to lubricate the shoes 78 and 18 via the tubes 80 and a passage 37 respectively. The assembly may be removed and inserted into the bore 14 in the opposite direction, the opposite end of the cam-bar 59 then being effective. A vibration indicator is provided. U.S.A. Specification 2,142,021 is referred to in the Specification as open to in spection. under Sect. 91.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US650383XA | 1947-04-12 | 1947-04-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB650383A true GB650383A (en) | 1951-02-21 |
Family
ID=22059940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9084/48A Expired GB650383A (en) | 1947-04-12 | 1948-03-31 | Improvements in or relating to grinding machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB650383A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1142524B (en) * | 1959-10-17 | 1963-01-17 | Fortuna Werke Spezialmaschinen | Device for static and dynamic balancing of grinding wheels on grinding machines equipped with a vibration indicator |
CN107498461A (en) * | 2017-09-26 | 2017-12-22 | 广州市锐恒科技有限公司 | A kind of efficiently polishing grinding composite main shaft |
CN108145597A (en) * | 2018-02-06 | 2018-06-12 | 湘潭大学 | A kind of pneumatic grinder head device of flexibility |
-
1948
- 1948-03-31 GB GB9084/48A patent/GB650383A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1142524B (en) * | 1959-10-17 | 1963-01-17 | Fortuna Werke Spezialmaschinen | Device for static and dynamic balancing of grinding wheels on grinding machines equipped with a vibration indicator |
CN107498461A (en) * | 2017-09-26 | 2017-12-22 | 广州市锐恒科技有限公司 | A kind of efficiently polishing grinding composite main shaft |
CN107498461B (en) * | 2017-09-26 | 2023-12-19 | 广州市锐恒科技有限公司 | High-efficient polishing grinds compound main shaft |
CN108145597A (en) * | 2018-02-06 | 2018-06-12 | 湘潭大学 | A kind of pneumatic grinder head device of flexibility |
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