US3597888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine
Assignee: Toyoda Koki KK
•
Filing: 1969-09-10
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Granted: 1971-08-10
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Expires: 1989-09-10
Abstract
Abstract A grinding machine comprising a grinding wheel support for rotatably supporting a grinding wheel, a table for supporting a workpiece, means for rapidly moving the grinding wheel support toward and away from the workpiece, and means for moving the grinding wheel support toward the workpiece at a feed speed for rough-grinding operation which is lower than the speed of the means for moving the grinding wheel support toward and away from the workpiece, wherein the grinding wheel support is separated from the workpiece after the rough-grinding operation in order to cool the workpiece, following which the wheel support is advanced to the workpiece for the fine-grinding operation so that the workpiece, which is thermally expanded during the rough-grinding operation, recovers from the expanded condition prior to the fine-grinding operation, whereby a more accurate size of the finished workpiece will be attained.
Inventors
- 👤 Takeshi Kusakabe
- 👤 Kenji Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/20; B24B49/00; B24B49/14
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
122 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel return means for actuating said feed means to separately return the grinding wheel for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation by said feed means, and means for generating a signal after said selected period to again advance the grinding wheel toward the workpiece for fine grinding.
Claim 2
Dependent Claim
122 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel return means for actuating said feed means to separately return the grinding wheel for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation by said feed means, and means for generating a signal after said selected period to again advance the grinding wheel toward the workpiece for fine grinding.
Claim 3
Dependent Claim
135 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel return means for actuating said feed means to separately return the grinding wheel from a grinding position on the workpiece to a predetermined position after the rough-grinding operation by said feed means, and means for measuring surface temperature of the workpiece, said measuring means generating a signal to again advance the grinding wheel toward the workpiece for fine grinding when the surface of the workpiece is cooled to a predetermined temperature.
Claim 4
Dependent Claim
135 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel return means for actuating said feed means to separately return the grinding wheel from a grinding position on the workpiece to a predetermined position after the rough-grinding operation by said feed means, and means for measuring surface temperature of the workpiece, said measuring means generating a signal to again advance the grinding wheel toward the workpiece for fine grinding when the surface of the workpiece is cooled to a predetermined temperature.
Claim 5
Dependent Claim
150 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for generating a signal after said selected period to again advance the grinding wheel toward the workpiece for fine grinding.
Claim 6
Dependent Claim
150 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for generating a signal after said selected period to again advance the grinding wheel toward the workpiece for fine grinding.
Claim 7
Dependent Claim
163 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for measuring surface temperature of the workpiece, said measuring means generating a signal to again advance the grinding wheel toward the workpiece for fine grinding when the surface of the workpiece is cooled to a predetermined temperature.
Claim 8
Dependent Claim
163 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for measuring surface temperature of the workpiece, said measuring means generating a signal to again advance the grinding wheel toward the workpiece for fine grinding when the surface of the workpiece is cooled to a predetermined temperature.
Claim 9
Dependent Claim
150 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for generating a signal after said selected period to again advance the grinding wheel toward the workpiece for fine grinding.
Claim 10
Dependent Claim
150 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for generating a signal after said selected period to again advance the grinding wheel toward the workpiece for fine grinding.
Claim 11
Dependent Claim
163 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for measuring surface temperature of the workpiece, said measuring means generating a signal to again advance the grinding wheel toward the workpiece for fine grinding when the surface of the workpiece is cooled to a predetermined temperature.
Claim 12
Dependent Claim
163 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, and means for measuring surface temperature of the workpiece, said measuring means generating a signal to again advance the grinding wheel toward the workpiece for fine grinding when the surface of the workpiece is cooled to a predetermined temperature.
Claim 13
Dependent Claim
188 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel position change means for changing a position of the grinding wheel after the rough-grinding operation, means at said position of the grinding wheel to change the feed speed of the wheel from the rapid feed rate to the reduced feed rate, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 14
Dependent Claim
188 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel position change means for changing a position of the grinding wheel after the rough-grinding operation, means at said position of the grinding wheel to change the feed speed of the wheel from the rapid feed rate to the reduced feed rate, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 15
Dependent Claim
187 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a griNding wheel rotatably supported on said wheel, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel position change means for changing a position of the grinding wheel after the rough-grinding operation, means at said position of the grinding wheel to change the feed speed of the wheel from the rapid feed rate to the reduced feed rate, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 16
Dependent Claim
187 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a griNding wheel rotatably supported on said wheel, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel position change means for changing a position of the grinding wheel after the rough-grinding operation, means at said position of the grinding wheel to change the feed speed of the wheel from the rapid feed rate to the reduced feed rate, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 17
Dependent Claim
157 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel return means for actuating said feed means to separately return the grinding wheel for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation by said feed means, wheel-dressing apparatus for dressing the peripheral surface of the wheel during said selected period, wheel position-compensating means for compensating a wheel position with respect to the workpiece in the same relation thereto as before dressing during said selected period, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 18
Dependent Claim
157 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel return means for actuating said feed means to separately return the grinding wheel for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation by said feed means, wheel-dressing apparatus for dressing the peripheral surface of the wheel during said selected period, wheel position-compensating means for compensating a wheel position with respect to the workpiece in the same relation thereto as before dressing during said selected period, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 19
Dependent Claim
185 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel-dressing apparatus for dressing the peripheral surface of the wheel during said selected period, wheel position-compensating means for compensating a wheel position with respect to the workpiece in the same relation thereto as before dressing during said selected period, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 20
Dependent Claim
185 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said rapid feed means to separately return the grinding wheel at the rapid feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel-dressing apparatus for dressing the peripheral surface of the wheel during said selected period, wheel position-compensating means for compensating a wheel position with respect to the workpiece in the same relation thereto as before dressing during said selected period, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 21
Dependent Claim
185 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel-dressing apparatus for dressing the peripheral surface of the wheel during said selected period, wheel position-compensating means for compensating a wheel position with respect to the workpiece in the same relation thereto as before dressing during said selected period, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 22
Dependent Claim
185 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel return means for actuating said reduced feed means to separately return the grinding wheel at the reduced feed rate for a selected period from a grinding position on the workpiece to a predetermined position after the rough-grinding operation, wheel-dressing apparatus for dressing the peripheral surface of the wheel during said selected period, wheel position-compensating means for compensating a wheel position with respect to the workpiece in the same relation thereto as before dressing during said selected period, and means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding.
Claim 23
Dependent Claim
153 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel stop means for actuating said feed means to stop the grinding wheel for a selected period at a grinding position on the workpiece after the rough-grinding operation due to said feed means, wheel-dressing apparatus for dressing the peripheral surface of the wheel by a dressing amount during said selected period, means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding, and wheel position-compensating means for compensating a wheel position by a compensating amount as same as said dressing amount after fine grinding.
Claim 24
Dependent Claim
153 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a cooler for cooling coolant to continually cool the workpiece throughout a grinding operation, feed means for movement of the grinding wheel toward and from the workpiece, wheel stop means for actuating said feed means to stop the grinding wheel for a selected period at a grinding position on the workpiece after the rough-grinding operation due to said feed means, wheel-dressing apparatus for dressing the peripheral surface of the wheel by a dressing amount during said selected period, means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding, and wheel position-compensating means for compensating a wheel position by a compensating amount as same as said dressing amount after fine grinding.
Claim 25
Dependent Claim
175 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a coolant for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel stop means for actuating said reduced feed means to stop the grinding wheel for a selected period at a grinding position on the workpiece after the rough-grinding operation, wheel-dressing apparatus for dressing the peripheral surface of the wheel by a dressing amount during said selected period, means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding, and wheel position-compensating means for compensating a wheel position by a compensating amount as same as said dressing amount after fine grinding.
Claim 26
Dependent Claim
175 words
A grinding machine comprising a bed, a wheel support mounted on said bed, a grinding wheel rotatably supported on said wheel support, a table mounted on said bed operably to support a workpiece, cooling means including a coolant for cooling coolant to continually cool the workpiece throughout a grinding operation, rapid feed means for movement of the grinding wheel toward and from the workpiece at a rapid feed rate, reduced feed means for advance of the grinding wheel to the workpiece at a reduced feed rate for rough grinding, wheel stop means for actuating said reduced feed means to stop the grinding wheel for a selected period at a grinding position on the workpiece after the rough-grinding operation, wheel-dressing apparatus for dressing the peripheral surface of the wheel by a dressing amount during said selected period, means for again advancing the grinding wheel after said selected period toward the workpiece for fine grinding, and wheel position-compensating means for compensating a wheel position by a compensating amount as same as said dressing amount after fine grinding.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |