US4110938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infeeding method for internal grinders
Assignee: Seiko Seiki KK
•
Filing: 1976-10-21
•
Granted: 1978-09-05
•
Expires: 1996-10-21
Abstract
Abstract Infeeding method for internal grinders has rough grinding infeeding and fine grinding infeeding speeds. The changing point from the rough grinding to the fine grinding is shifted earlier in response to the grinding wheel diameter decreasing so that the actual stock-removal rate and the work-up time for a workpiece are kept approximately constant with uniform working on the workpiece.
Inventors
- 👤 Shohei Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:24
CPC Classifications
B; B24; B24B; B24B49/00; B24B47/00; B24B47/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
A method of operating an internal grinder having a grinding wheel, comprising: rapidly infeeding the grinding wheel from a rest position to a grinding position; operating the grinding wheel to effectuate grinding and simultaneously infeeding the grinding wheel at an infeeding speed slower than the speed of rapid infeeding; returning the grinding wheel to the rest position after grinding is complete; measuring a diameter of the grinding wheel; rapidly infeeding the grinding wheel from the rest position to another grinding position before initiating a subsequent grinding operation; and controlling the rapid infeeding to another grinding position to terminate the rapid infeeding to another grinding position earlier than the first-mentioned step of rapidly infeeding the grinding wheel when a decrease in grinding wheel diameter is measured in order to compensate for increased grinding ability of the smaller diameter grinding wheel.
Claim 2
Independent Claim
139 words
A method of operating an internal grinder having a grinding wheel, comprising: rapidly infeeding the grinding wheel from a rest position to a grinding position; operating the grinding wheel to effectuate grinding and simultaneously infeeding the grinding wheel at an infeeding speed slower than the speed of rapid infeeding; returning the grinding wheel to the rest position after grinding is complete; measuring a diameter of the grinding wheel; rapidly infeeding the grinding wheel from the rest position to another grinding position before initiating a subsequent grinding operation; and controlling the rapid infeeding to another grinding position to terminate the rapid infeeding to another grinding position earlier than the first-mentioned step of rapidly infeeding the grinding wheel when a decrease in grinding wheel diameter is measured in order to compensate for increased grinding ability of the smaller diameter grinding wheel.
Claim 3
Dependent Claim
73 words
A method according to claim 1, wherein the step of operating the grinding wheel and simultaneously infeeding the grinding wheel comprises reducing the speed of infeeding after a predetermined amount of grinding has occurred, and wherein the step of reducing the speed of infeeding occurs earlier with subsequent grinding operations when a decrease in grinding wheel diameter is measured in order to compensate for increased grinding ability of the smaller diameter grinding wheel.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |