US3703054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine
Assignee: Cincinnati Milacron Heald Corp
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Filing: 1971-05-17
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Granted: 1972-11-21
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Expires: 1991-05-17
Abstract
Abstract A grinding machine wherein sparkout grinding is carried out with small increments of cross-feed introduced every time the load drops to a predetermined value.
Inventors
- 👤 Herbert R Uhtenwoldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A grinding machine, comprising a. a base, b. a workpiece support mounted on the base, c. a wheelhead support mounted on the base, d. a wheelhead including a spindle and an abrasive wheel and a motor therefor mounted on the wheelhead support, e. a feed mechanism for bringing about relative movement between the wHeelhead support and the workpiece support to cause engagement of the wheel with the workpiece with a controlled force for most of the grinding cycle and shifting to sparkout grinding for the remainder of the cycle, the feed mechanism including an actuator capable of bringing about the said relative movement in an incremental manner during sparkout grinding, f. a control, including a device for measuring the force on the said wheelhead spindle, connected to the actuator to advance the wheel toward the workpiece each time the force drops to a predetermined value, and g. a gage connected to the feed mechanism to terminate the grinding cycle when a predetermined workpiece size has been reached.
Claim 2
Dependent Claim
167 words
A grinding machine, comprising a. a base, b. a workpiece support mounted on the base, c. a wheelhead support mounted on the base, d. a wheelhead including a spindle and an abrasive wheel and a motor therefor mounted on the wheelhead support, e. a feed mechanism for bringing about relative movement between the wHeelhead support and the workpiece support to cause engagement of the wheel with the workpiece with a controlled force for most of the grinding cycle and shifting to sparkout grinding for the remainder of the cycle, the feed mechanism including an actuator capable of bringing about the said relative movement in an incremental manner during sparkout grinding, f. a control, including a device for measuring the force on the said wheelhead spindle, connected to the actuator to advance the wheel toward the workpiece each time the force drops to a predetermined value, and g. a gage connected to the feed mechanism to terminate the grinding cycle when a predetermined workpiece size has been reached.
Claim 3
Dependent Claim
167 words
A grinding machine, comprising a. a base, b. a workpiece support mounted on the base, c. a wheelhead support mounted on the base, d. a wheelhead including a spindle and an abrasive wheel and a motor therefor mounted on the wheelhead support, e. a feed mechanism for bringing about relative movement between the wHeelhead support and the workpiece support to cause engagement of the wheel with the workpiece with a controlled force for most of the grinding cycle and shifting to sparkout grinding for the remainder of the cycle, the feed mechanism including an actuator capable of bringing about the said relative movement in an incremental manner during sparkout grinding, f. a control, including a device for measuring the force on the said wheelhead spindle, connected to the actuator to advance the wheel toward the workpiece each time the force drops to a predetermined value, and g. a gage connected to the feed mechanism to terminate the grinding cycle when a predetermined workpiece size has been reached.
Claim 4
Dependent Claim
167 words
A grinding machine, comprising a. a base, b. a workpiece support mounted on the base, c. a wheelhead support mounted on the base, d. a wheelhead including a spindle and an abrasive wheel and a motor therefor mounted on the wheelhead support, e. a feed mechanism for bringing about relative movement between the wHeelhead support and the workpiece support to cause engagement of the wheel with the workpiece with a controlled force for most of the grinding cycle and shifting to sparkout grinding for the remainder of the cycle, the feed mechanism including an actuator capable of bringing about the said relative movement in an incremental manner during sparkout grinding, f. a control, including a device for measuring the force on the said wheelhead spindle, connected to the actuator to advance the wheel toward the workpiece each time the force drops to a predetermined value, and g. a gage connected to the feed mechanism to terminate the grinding cycle when a predetermined workpiece size has been reached.
Claim 5
Dependent Claim
21 words
A grinding machine as recited in claim 1, wherein the feed mechanism includes a hydraulic cylinder for producing the controlled force.
Claim 6
Dependent Claim
51 words
A grinding machine as recited in claim 2, wherein the said actuator is a stepping motor operative to produce incremental motion in response to the receipt of electrical pulses, and wherein the said device operates a gate at the predetermined load to introduce a preselected number of pulses to the actuator.
Claim 7
Dependent Claim
53 words
A grinding machine as recited in claim 3, wherein the controlled force portion of the grinding cycle is brought about by engagement of the wheelhead support with a stop mounted on the base, wherein the stepping motor operates to retract the stop and allow the hydraulic cylinder to press the wheelhead support rearwardly.
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |