US3731043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital circuit for an eroding machine
Assignee: Agie Charmilles SA
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Filing: 1971-06-07
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Granted: 1973-05-01
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Expires: 1991-06-07
Abstract
Abstract This invention relates to a digital circuit for an eroding machine designed to control a relative movement between a workpiece and a wire electrode by the input of data stored in an information carrier, the said data being translated in a circuit into the curve defined by the axis of the wire electrode in consideration of the diameter of the wire electrode and the width of the operation gap.
Inventors
- 👤 W Ullmann
- 👤 R Panschow
- 👤 V Suhr
- 👤 W Meyer
- 👤 A Sieg
- 👤 L Rabian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:50
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/41; G05B19/4103; B; B23; B23H; B23H7/00; B23H7/02; B23H7/06; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34163; G05B2219/34174; G05B2219/45; G05B2219/45221; G05B2219/50; G05B2219/50103; G05B2219/50353; Y; Y02; Y02P; Y02P90/00; Y02P90/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
212 words
A digital circuit for an eroding machine for the control of a relative movement between a workpiece and a wire electrode by supplying data stored in an information carrier which are converted in a circuit into the path curve defined by the axis of the wire electrode in consideration of the diameter of the wire electrode and the width of the operating gap, characterized by, a circuit which generates signals for the path curve and the setting of a certain angle between the axis of the wire electrode and the surface of the workpiece following the data of the information carrier, at least one interpolator which calculates the path curve of the axis of the wire electrode and its angular position by virtue of the said signals according to a predetermined program and supplies control signals, by means of an interpolation process, to driving motors of at least one advancing device, return memories which return the wire electrode along the same path curve by a certain length when trouble occurs in the operating gap, and a circuit for transmitting the data for the angular setting, the control of the electrical parameters to at least one erosion generator, and for control of the flushing conditions of the dielectric liquid in the operating gap.
Claim 2
Dependent Claim
212 words
A digital circuit for an eroding machine for the control of a relative movement between a workpiece and a wire electrode by supplying data stored in an information carrier which are converted in a circuit into the path curve defined by the axis of the wire electrode in consideration of the diameter of the wire electrode and the width of the operating gap, characterized by, a circuit which generates signals for the path curve and the setting of a certain angle between the axis of the wire electrode and the surface of the workpiece following the data of the information carrier, at least one interpolator which calculates the path curve of the axis of the wire electrode and its angular position by virtue of the said signals according to a predetermined program and supplies control signals, by means of an interpolation process, to driving motors of at least one advancing device, return memories which return the wire electrode along the same path curve by a certain length when trouble occurs in the operating gap, and a circuit for transmitting the data for the angular setting, the control of the electrical parameters to at least one erosion generator, and for control of the flushing conditions of the dielectric liquid in the operating gap.
Claim 3
Dependent Claim
68 words
A circuit according to claim 1 characterized by the fact that the circuit which converts the data representing the workpiece configuration in consideration of the diameter of the wire electrode and the width of the operating gap into corrected data for the path curve, is connected to one of a manual input and the circuit for the purpose of supplying the wire diameter and the gap width data.
Claim 4
Dependent Claim
96 words
A circuit according to claim 1 characterized by the fact that the memory means are designed as return memories and that a return memory is associated with each interpolator, each such return memory being so set that it will store the control signals which pass, from the associated interpolator, to the driving motors, stop the control signals supplied by the interpolator by a trouble signal, and supply the control impulses of the last length of the path curve in reverse order to the driving motors so that the wire electrode will return by a certain length.
Claim 5
Dependent Claim
90 words
A circuit according to claim 1 characterized by the fact that the memory means in each interpolator are arranged to store the characteristic points of the path curve and are so set that, in the presence of a trouble signal from a monitoring device, which interrupts the supply of control signals from the interpolator for the further erosive operation of the wire electrode, it interpolates the stored characteristic points in reverse order and supplies them to the driving motors so that the wire electrode will return by a certain length.
Claim 6
Dependent Claim
42 words
A circuit according to claim 1 characterized by the fact that a monitoring device is provided which, in the event of changes of conditions in the operating gap, influences the electrical parameters of the erosion generator, the return memories, and the interpolators.
Claim 7
Dependent Claim
35 words
A circuit according to claim 1 characterized by the fact that an indexing unit is arranged between the correcting computing unit and the conicity computing unit for the purpose of displacing the system of coordinates.
Claim 8
Dependent Claim
83 words
A circuit according to claim 1 characterized by the fact that the advancing device consists of a first cross-table displaceable on two coordinates for the advance of the wire electrode on the path curve corrected in consideration of the diameter of the wire electrode and the width of the operating gap, and a second cross-table displaceable on at least two coordinates for the angular setting, the seconD cross-table being arranged on a portion of the first cross-table which is displaceable on one coordinate.
Claim 9
Dependent Claim
44 words
A circuit according to claim 7 characterized by the fact that the second cross-table has attached to it a holding device for the wire electrode with wire guides arranged above and underneath the workpiece, the two wire guides being displaceable relative to one another.
Claim 10
Dependent Claim
35 words
A circuit according to claim 8 characterized by the fact that one wire guide of the holding device is arranged on the first cross-table while the second wire guide is arranged on the second cross-table.
Claim 11
Dependent Claim
57 words
A circuit according to claim 1 characterized by a holding device for the wire electrode comprising wire guides arranged one above and one underneath the workpiece, the upper wire guide being attached to a first cross-table displaceable on at least two coordinates while the other wire guide is attached to a second cross-table displaceable on two coordinates.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |