EP0034006A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A method of tracing
Assignee: Fanuc Corp
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Filing: 1981-01-16
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Granted: —
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Expires: 2001-01-16
Abstract
Abstract In a tracer control system, data for determining a limit value of the trace range of a model MDL are stored in a memory MEM and the stored data are read out therefrom by a processor CPU to calculate a limit value of a trace range. The current position of a movable machine part CT is detected and compared with the limit value, and when it is detected by the processor CPU that the current position of the movable machine part C T has reached the limit value, a trace feed is switched to a pick feed. After the pick feed is performed for a predetermined distance, operation is switched again to the trace feed. A desired trace range is set to achieve tracer control without the provision of limit switches.
Inventors
- 👤 Imazeki Ryoji
- 👤 Etuo Yamazaki
- 👤 Takao No. 469-4 Kobiki-Cho Sesaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 23:39
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123; G; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/47; G05B2219/4713
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
192 words
A tracer control system which is operable such that a configuration of a model is detected by a tracer head, and feed velocity control components in respective axes are obtained by arithmetic processing of tracing signals from the tracer head, the tracer control system comprising: a memory for storing data for determining one or more limit values of a trace range of the model; a processor for reading out stored data of the memory to calculate said limit values of the trace range, and for controlling a tracing operation; and means for detecting the current position of a movable machine part which is moved in dependence upon said feed velocity control components; wherein when the tracer control system is in use, said limit values of the trace range calculated by the processor are compared with the current position of the movable machine part detected by the detecting means; when it is detected that said current position has reached a limit value, a trace feed is switched to a pick feed; and, after the pick feed is performed for a predetermined distance, the pick feed is switched back again to the trace feed.
Claim 2
Dependent Claim
192 words
A tracer control system which is operable such that a configuration of a model is detected by a tracer head, and feed velocity control components in respective axes are obtained by arithmetic processing of tracing signals from the tracer head, the tracer control system comprising: a memory for storing data for determining one or more limit values of a trace range of the model; a processor for reading out stored data of the memory to calculate said limit values of the trace range, and for controlling a tracing operation; and means for detecting the current position of a movable machine part which is moved in dependence upon said feed velocity control components; wherein when the tracer control system is in use, said limit values of the trace range calculated by the processor are compared with the current position of the movable machine part detected by the detecting means; when it is detected that said current position has reached a limit value, a trace feed is switched to a pick feed; and, after the pick feed is performed for a predetermined distance, the pick feed is switched back again to the trace feed.
Claim 3
Dependent Claim
57 words
A tracer control system according to claim 1, wherein the processor is operable to control a tracing operation of a model in such manner that limit values of the trace range of a model are provided which are in accordance with the configuration of the model, thereby to reduce unnecessary tracing beyond the periphery of the model.
Claim 4
Dependent Claim
40 words
A tracer control system according to claim 1 or 2, wherein the means for detecting the current position of the movable machine part comprises a reversible counter for counting pulses from a position detector associated with the movable machine part.
Claim 5
Dependent Claim
45 words
A tracer control system according to claim 1, 2, or 3, wherein the system is such that said data for determining the limit value of the trace range of the model can comprise coordinate values for a trace start point and a trace terminating point.
Claim 6
Dependent Claim
51 words
A tracer control system according to any one of the preceding claims, wherein the system is such that said data for determining said limit values of the trace range of the model can comprise a coordinate value of a center of the trace range, and a radius of the trace range.
References Cited (Backward Citations)
No citation records indexed.
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