Patent US4173847A successfully refreshed from Google Patents.
US4173847A
Expired / Lapsed
US
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Feeding device for a chip removing tool for machining bores in workpieces, especially a honing tool
Assignee: Maschinenfabrik Gehring GmbH and Co KG
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Filing: 1976-08-04
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Granted: 1979-11-13
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Expires: 1996-08-04
Abstract
Abstract A feeding device, especially for a honing tool, in which a frame is formed with a cylinder having a piston mounted therein and to which is connected a spindle or feed rod having the tools mounted thereon. The piston will effect rapid advance and retraction of the feed rod while the connection of the piston to the feed rod embodies threaded means which can be adjusted incrementally or manually to effect fine feeding movement of the tools following the rapid advance thereof. Automatic control means are provided for controlling the incremental feeding of the tools and for compensating for tool wear.
Inventors
- 👤 Heinz Gehring
- 👤 Albert Bender
- 👤 Gunter Richter
- 👤 Reinhard Froschle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/02
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
214 words
A feeding device for a honing machine tool comprising in combination: a housing, a spindle rotatable in the housing, an axially displaceable feed rod on the axis of said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, and electric actuating means operable for automatically operating at least feed means control means operable for causing said electric actuating means to emit control pulses periodically to effect said incremental adjustment of the feed rod measuring means for supplying a signal to said control means for making said control means ineffective said measuring means comprising a counter which counts the number of control pulses said counter comprising a plurality of adjustable counting stages and selector switch means for making the respective stages effective, said counting stages including a first stage for controlling the number of pulses supplied by said electric actuating means for advancing the feed rod, a second stage which counts the number of work operations of the feed rod, and a third stage for determining the number of compensatory pulses to be supplied to advance the feed rod.
Claim 2
Dependent Claim
214 words
A feeding device for a honing machine tool comprising in combination: a housing, a spindle rotatable in the housing, an axially displaceable feed rod on the axis of said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, and electric actuating means operable for automatically operating at least feed means control means operable for causing said electric actuating means to emit control pulses periodically to effect said incremental adjustment of the feed rod measuring means for supplying a signal to said control means for making said control means ineffective said measuring means comprising a counter which counts the number of control pulses said counter comprising a plurality of adjustable counting stages and selector switch means for making the respective stages effective, said counting stages including a first stage for controlling the number of pulses supplied by said electric actuating means for advancing the feed rod, a second stage which counts the number of work operations of the feed rod, and a third stage for determining the number of compensatory pulses to be supplied to advance the feed rod.
Claim 3
Dependent Claim
44 words
A feeding device according to claim 1 in which said third stage is actuated to supply a predetermined number of compensatory pulses to said electric actuating means each time said second stage has counted a predetermined number of work operations of said feed rod.
Claim 4
Dependent Claim
30 words
A feeding device according to claim 2 which includes a control potentiometer in circuit with said counter, and means for making said potentiometer ineffective during actuation of said third stage.
Claim 5
Dependent Claim
41 words
A feeding device according to claim 2 which includes means for supplying said compensatory pulses under the control of said third counter stage at a rate greater than the supply of feed pulses under the control of said first counter stage.
Claim 6
Dependent Claim
36 words
A feeding device according to claim 2 which includes means responsive to engagement of tool means on the feed rod with a workpiece for reducing the rate of supply of feed pulses to said feed means.
Claim 7
Dependent Claim
18 words
A feeding device according to claim 2 which includes manually operable means for adjusting said first counter stage.
Claim 8
Dependent Claim
46 words
A feeding device according to claim 2 which includes dimensionally sensitive means engageable with machined regions of a machined workpiece and operable in response to the size of the engaged region to supply a signal to cause adjustment of the setting of said first counter stage.
Claim 9
Dependent Claim
37 words
A feeding device according to claim 7 in which the adjustment of the setting of said first counting stage in response to signals from said dimensionally sensitive means is under the control of said second counting stage.
Claim 10
Dependent Claim
45 words
A feeding device according to claim 8 which includes in combination load sensitive means responsive to a predetermined axial load imposed on said feed rod by a workpiece engaged by tool means on the feed rod for interrupting the incremental feeding of said feed rod.
Claim 11
Dependent Claim
30 words
A feeding device according to claim 9 which includes limit control means responsive to a predetermined maximum advancing movement of said feed rod for interrupting operation of said machine tool.
Claim 12
Dependent Claim
28 words
A feeding device according to claim 10 in which said limit control means includes a switch actuated in response to a predetermined advancing movement of said feed rod.
Claim 13
Dependent Claim
150 words
A feeding device for a machine tool; a housing, a spindle rotatable in the housing, an axially displaceable feed rod on the axis of said spindle having one end in said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, and electric actuating means operable for automatically operating at least feed means, load sensitive means responsive to a predetermined axial load imposed on said feed rod by a workpiece engaged by tool means on the feed rod for interrupting the incremental feeding of said feed rod, said load sensitive means comprising a lever actuated by movement of said piston means away from advanced position, and a control switch actuated by movement of said lever.
Claim 14
Dependent Claim
150 words
A feeding device for a machine tool; a housing, a spindle rotatable in the housing, an axially displaceable feed rod on the axis of said spindle having one end in said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, and electric actuating means operable for automatically operating at least feed means, load sensitive means responsive to a predetermined axial load imposed on said feed rod by a workpiece engaged by tool means on the feed rod for interrupting the incremental feeding of said feed rod, said load sensitive means comprising a lever actuated by movement of said piston means away from advanced position, and a control switch actuated by movement of said lever.
Claim 15
Dependent Claim
57 words
A feeding device according to claim 12 in which said fluid operable piston provides for rapid advance of said feed rod toward working position and said feed means comprises a hydromechanical transmission in said housing connected to said feed rod to effect fine advance thereof during operation of a workpiece by tool means on said feed rod.
Claim 16
Dependent Claim
81 words
A feeding device according to claim 12 in which said feed means comprises a hydromechanical transmission in said housing, a sleeve rotatably but nonaxially movably connected to said feed rod, a nut threaded on said sleeve and connected to said fluid operable piston, means on said nut presenting external teeth, said transmission comprising a reciprocable piston element, and a pivoted lever having one end engaging said piston element and the other end toothed and adjacent the external teeth on said nut.
Claim 17
Dependent Claim
69 words
A feeding device according to claim 12 in which said feed means comprises a hydromechanical transmission in said housing, a sleeve rotatably but nonaxially movably connected to said feed rod, a nut threaded on said sleeve and connected to said fluid operable piston, means on said nut presenting external teeth, a gear in the frame meshing with the teeth on said nut, and a handwheel connected to said gear.
Claim 18
Dependent Claim
36 words
A feeding device according to claim 15 which includes a rotary fluid motor in said housing connected to said gear, and means for actuating said motor for returning said nut to a predetermined selectable starting position.
Claim 19
Dependent Claim
32 words
A feeding device according to claim 12 which includes control means operable for causing said electric actuating means to emit control pulses periodically to effect said incremental adjustment of the feed rod.
Claim 20
Dependent Claim
26 words
A feeding device according to claim 17 in which said control means includes a potentiometer means adjustable for controlling the rate of supply of control pulses.
Claim 21
Dependent Claim
17 words
A feeding device according to claim 18 in which said potentiometer means comprises a plurality of potentiometers.
Claim 22
Dependent Claim
25 words
A feeding device according to claim 17 which includes measuring means for supplying a signal to said control means for making said control means ineffective.
Claim 23
Dependent Claim
15 words
A feeding device according to claim 20 in which said measuring means comprises a timer.
Claim 24
Dependent Claim
16 words
A feeding device according to claim 20 in which said measuring means comprises dimension measuring device.
Claim 25
Dependent Claim
22 words
A feeding device according to claim 20 in which said measuring means comprises a counter which counts the number of control pulses.
Claim 26
Dependent Claim
28 words
A feeding device according to claim 23 in which said counter comprises a plurality of adjustable counting stages and selector switch means for making the respective stages effective.
Claim 27
Dependent Claim
29 words
A feeding device according to claim 12 which includes a second fluid operable piston means in said frame and a second feed rod connected to the second piston means.
Claim 28
Dependent Claim
21 words
A feeding device according to claim 25 in which said second feed rod is concentric with the first mentioned feed rod.
Claim 29
Dependent Claim
47 words
A feeding device according to claim 12 which includes a counting stage, dimensionally sensitive means engageable with machined regions of a machined workpiece and operable in response to the size of the engaged region to supply a signal to cause adjustment of setting of said counting stage.
Claim 30
Dependent Claim
28 words
A feeding device according to claim 27 in which the adjustment of the setting of said counting stage is in response to signals from said dimensionally sensitive means.
Claim 31
Dependent Claim
181 words
A feeding device for a machine tool; a housing, a spindle rotatable in the housing, a counter, an axially displaceable feed rod on the axis of said spindle having one end in said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, said feed means include control means for supplying said counter periodically with control pulses, said counter which counts the number of control pulses comprises a plurality of adjustable counting stages and selector switch means for making the respective stages effective to adjust incrementally the feed rod, said counting stages including a first counter stage for controlling the number of pulses supplied by said control means for advancing the feed rod, a second stage which counts the number of work operations of the feed rod, and a third stage for determining the number of compensatory pulses to be supplied to advance the feed rod.
Claim 32
Dependent Claim
181 words
A feeding device for a machine tool; a housing, a spindle rotatable in the housing, a counter, an axially displaceable feed rod on the axis of said spindle having one end in said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, said feed means include control means for supplying said counter periodically with control pulses, said counter which counts the number of control pulses comprises a plurality of adjustable counting stages and selector switch means for making the respective stages effective to adjust incrementally the feed rod, said counting stages including a first counter stage for controlling the number of pulses supplied by said control means for advancing the feed rod, a second stage which counts the number of work operations of the feed rod, and a third stage for determining the number of compensatory pulses to be supplied to advance the feed rod.
Claim 33
Dependent Claim
186 words
A feeding device for a machine tool; a housing, a spindle rotatable in the housing, a counter an axially displaceable feed rod on the axis of said spindle having one end in said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, said feed means include control means for supplying said counter periodically with control pulses, said counter which counts the number of control pulses comprises a plurality of adjustable counting stages and selector switch means for making the respective stages effective to adjust incrementally the feed rod, load sensitive means responsive to a predetermined axial load imposed on said feed rod by a workpiece engaged by tool means on the feed rod for interrupting the incremental feeding of said feed rod, said load sensitive means comprising a lever actuated by movement of said piston means away from advanced position, and a control switch actuated by movement of said lever.
Claim 34
Dependent Claim
186 words
A feeding device for a machine tool; a housing, a spindle rotatable in the housing, a counter an axially displaceable feed rod on the axis of said spindle having one end in said spindle and the other end adapted for connection to tool means, fluid operable piston means in the housing operable for urging said feed rod in at least one direction, feed means for incrementally adjusting the axial position of said feed rod relative to the spindle, said feed means include control means for supplying said counter periodically with control pulses, said counter which counts the number of control pulses comprises a plurality of adjustable counting stages and selector switch means for making the respective stages effective to adjust incrementally the feed rod, load sensitive means responsive to a predetermined axial load imposed on said feed rod by a workpiece engaged by tool means on the feed rod for interrupting the incremental feeding of said feed rod, said load sensitive means comprising a lever actuated by movement of said piston means away from advanced position, and a control switch actuated by movement of said lever.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |