GB1483476A - Grinding machine - Google Patents
Grinding machineInfo
- Publication number
- GB1483476A GB1483476A GB52078/74A GB5207874A GB1483476A GB 1483476 A GB1483476 A GB 1483476A GB 52078/74 A GB52078/74 A GB 52078/74A GB 5207874 A GB5207874 A GB 5207874A GB 1483476 A GB1483476 A GB 1483476A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slide
- grinding
- pulses
- wheel
- motor
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41326—Step motor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/43—Speed, acceleration, deceleration control ADC
- G05B2219/43006—Acceleration, deceleration control
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Control Of Stepping Motors (AREA)
Abstract
1483476 Grinding CINCINNATI MILACRON HEALD CORP 2 Dec 1974 [3 Dec 1973] 52078/74 Heading B3D A grinding machine comprises a workhead slide 18 and wheelhead slide 19 mounted on a base 11, a feed mechanism, including a stepping motor 57, for producing transverse relative movement between the slides to produce a grinding cycle, a pulse generator having a first section for producing pulses at a first rate and a second section for producing pulses at a second rate which is substantially greater than the first rate, and control means for introducing pulses from the first section to the motor during a portion of the grinding cycle and for introducing pulses from the second section to the motor during another portion of the grinding cycle. As described, the machine is for grinding the inter. nal surface of roller bearing races and has a grinding wheel 24 on a spindle 23 which is rotated by a motor 15 and mounted on the wheel slide 19. Axial movement of the wheel is effected by an hydraulic cylinder 60 and longitudinal oscillation of the wheel during grinding is produced by an oscillator 50. A workhead 21 is mounted on a slide 19 movable transversely to the axis of the grinding wheel along guides 32, 33 which form self-balancing hydrostatic bearing surfaces of the type in which horizontal or vertical forces on the slide 18 do not change the thickness of the oil film supporting the slide. A block 35 of the slide is slidable relative to a lower element 31 on the base 11 of the machine and has a shaft 36 slidable in a bearing 37 in a flange of the element 31. A pair of flanges 38, 39 extend from the rear of the block and have bearings slidably receiving rods 43, 44 mounted on flanges at the rear of the element 31. The block has a recess 43 formed with vertical surfaces 46, 47. A contact member 48 adjustable by rotation of shaft 36 extends from surface 46 and a contact member 51 is fixed in surface 47. A nut 52 is mounted in block 35 and engages a screw 53, the nut and screw being of the ball type, and the screw is mounted in a bearing 54 and has a gear 55 engaged by a worm 56 driven by the stepping motor 57. A finger 58 depends from the slide 18 into the recess 43 and has plates 58, 62 for engaging the contact members 48, 51, sensing elements 61, 63 indicating when contact is effected. The Specification gives details of a circuit controlling the operation of the machine and, in particular, the stepping motor 57, in which high speed stepping, or half stepping and of high voltage switching of the motor windings. With the workhead slide 18 feeding at a certain grinding rate, a signal calls for a "dress interrupt" and the slide is moved rearwardly at high speed stopping operation so as to align a dressing apparatus 30 with the grinding wheel. A feed reset operation is effected and the pulses set to high speed operation to return the slide at high speed until a deceleration signal is received to produce low speed pulses, a counter and size signal controlling the operation. The accelerations and decelerations provide a smooth change over of feed rates. The control circuit is such that the stepping motor does not lose synchronism with the incoming pulses and grinding can be effected by "dead reckoning" counting.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US421028A US3890116A (en) | 1973-12-03 | 1973-12-03 | Grinding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1483476A true GB1483476A (en) | 1977-08-17 |
Family
ID=23668894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB52078/74A Expired GB1483476A (en) | 1973-12-03 | 1974-12-02 | Grinding machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US3890116A (en) |
JP (1) | JPS53154B2 (en) |
DE (1) | DE2456923A1 (en) |
FR (1) | FR2252904A1 (en) |
GB (1) | GB1483476A (en) |
IT (1) | IT1026707B (en) |
SE (1) | SE7414914L (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4059927A (en) * | 1976-08-30 | 1977-11-29 | Cincinnati Milacron-Heald Corporation | Grinding machine |
IT1218510B (en) * | 1987-09-11 | 1990-04-19 | Cima | MACHINE DIAMOND EQUIPMENT OF SCREW WHEELS USED IN GEAR GRINDING MACHINES |
USD379998S (en) * | 1996-05-09 | 1997-06-17 | Active Automation, Inc. | Computer numerical control operated tool grinding system |
CN111993256A (en) * | 2020-07-31 | 2020-11-27 | 江苏久高电子科技有限公司 | Polishing device and polishing method for manufacturing communication equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3618269A (en) * | 1969-08-01 | 1971-11-09 | Heald Machine Co | Grinding machine |
US3797176A (en) * | 1970-08-03 | 1974-03-19 | Warner Swasey Co | Dual-cycle cam grinding machine with electrical pulse operated wheel feed |
US3691357A (en) * | 1970-09-21 | 1972-09-12 | Litton Industries Inc | Positioning control system having memory for a machine tool |
-
1973
- 1973-12-03 US US421028A patent/US3890116A/en not_active Expired - Lifetime
-
1974
- 1974-11-28 SE SE7414914A patent/SE7414914L/xx unknown
- 1974-12-02 IT IT7430074A patent/IT1026707B/en active
- 1974-12-02 DE DE19742456923 patent/DE2456923A1/en not_active Ceased
- 1974-12-02 GB GB52078/74A patent/GB1483476A/en not_active Expired
- 1974-12-03 FR FR7439483A patent/FR2252904A1/fr not_active Withdrawn
- 1974-12-03 JP JP13782174A patent/JPS53154B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2456923A1 (en) | 1975-06-05 |
SE7414914L (en) | 1975-06-04 |
US3890116A (en) | 1975-06-17 |
FR2252904A1 (en) | 1975-06-27 |
JPS50113887A (en) | 1975-09-06 |
JPS53154B2 (en) | 1978-01-05 |
IT1026707B (en) | 1978-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |