EP0014563A2
Expired / Lapsed
EP
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Tracer control apparatus for, and a method of machining in, a tracer machining system
Assignee: Fanuc Corp
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Filing: 1980-01-30
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Granted: —
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Expires: 2000-01-30
Abstract
Abstract Tracer control apparatus, for a tracer machining system, has a memory storing position A, along the PICKFEED AXIS, of the first clamping feed in initial tracing of a clamping feed area H1 and position B at which clamping feed is absent after initial tracing of area H1. Using the stored positions the apparatus causes repeat tracings back and forth between A and B. Clamping level setting means 11 to 15 set an initial clamping level LCZ for clamping feeds in initial tracing of area H1, and add increments inc to that level for successive repeat tracings. Only when the incremented clamping level is not reached in a repeat tracing, or the incremented level reaches a limit value, does tracing proceed beyond area H1. The clamping level is set back to its initial value. A method of machining is provided in which repeat tracing is carried out only in areas where required, e.g. H1, in dependence upon stored positions A and B and incrementing clamping levels.
Inventors
- 👤 Ryoji Imazeki
- 👤 Etuo Yamazaki
- 👤 Takao Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 06:41
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; G; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/49; G05B2219/49392
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
Tracer control apparatus, for a tracer machining system operable to effect tracing by tracing feeds and pick feeds and to effect clamping feeds at a preset clamping level, characterised by memory means for storing a first position along the pick feed axis, which position corresponds to the first of a succession of tracing feeds in the course of each of which clamping feed is effected in an initial tracing, and for storing a second position along the pick feed axis, which position corresponds to a tracing feed, following next after the last tracing feed of the succession, in the course of which clamping feed is not effected, means operable in dependenceupon the first and second positions as stored in the memory means to cause tracing between the first and second positions to be repeated, back and forth between those positions, and clamping level'setting means for setting an initial clamping level in respect of the initial tracing from the first to the second position, and for changing the clamping level for respective subsequent repeat tracings between the first and second positions until, -in such a repeat tracing, clamping feed is not effected at the changed clamping level set for that tracing or a limit clamping level value is reached, whereafter.the initial clamping level is set once more, and tracing proceeds beyond the second position.
Claim 2
Dependent Claim
223 words
Tracer control apparatus, for a tracer machining system operable to effect tracing by tracing feeds and pick feeds and to effect clamping feeds at a preset clamping level, characterised by memory means for storing a first position along the pick feed axis, which position corresponds to the first of a succession of tracing feeds in the course of each of which clamping feed is effected in an initial tracing, and for storing a second position along the pick feed axis, which position corresponds to a tracing feed, following next after the last tracing feed of the succession, in the course of which clamping feed is not effected, means operable in dependenceupon the first and second positions as stored in the memory means to cause tracing between the first and second positions to be repeated, back and forth between those positions, and clamping level'setting means for setting an initial clamping level in respect of the initial tracing from the first to the second position, and for changing the clamping level for respective subsequent repeat tracings between the first and second positions until, -in such a repeat tracing, clamping feed is not effected at the changed clamping level set for that tracing or a limit clamping level value is reached, whereafter.the initial clamping level is set once more, and tracing proceeds beyond the second position.
Claim 3
Dependent Claim
109 words
Apparatus as claimed in claim 1, further comprising a counter arranged for counting pulses from a pick-feed axis position detector of the system, wherein the memory means are operable to store the first and second positions in terms of the counts reached the counter for those positions, the count correspond L to the first position being entered into the memory in response to the occurrence of clamping feed, in the first of the succession of tracing feeds, and the count corresponding to the second position being entered into the memory in response to the absence of clamping feed in the next tracing feed after the last of the succession.
Claim 4
Dependent Claim
68 words
Apparatus as claimed in claim 1 or 2, wherein the clamping level setting means comprise a first register holding the initial clamping level, a second register holding a clamping level increment, and a clamping level setting counter operable to derive the changed clamping levels for each of the said respective subsequent repeat tracings by adding the said increment to the clamping level applicable to the last preceding tracing.
Claim 5
Independent Claim
187 words
A method of machining in a tracer machining system that is operable to effect tracing by tracing feeds and pick feeds and to effect clamping feeds at a preset clamping level, characterised in that the method comprises: in an initial tracing, storing a first position along the pick feed axis which position corresponds to the first tracing feed of a succession of tracing feeds in which clamping feed is effected,and storing a second position along the pick feed axis which position corresponds to a tracing feed, following next after the last tracing feed of the succession, in the course of which clamping feed is not effected, in dependence upon the stored positions, executing repeat tracings back and forth between those positions, in respective such repeat tracings after the initial tracing, changing the clamping level from an initial clamping level value applicable to the initial tracing, until in such a repeat tracing clamping feed is not effected at the changed clamping level set for that tracing or a limit clamping level value is reached, then, setting the initial clamping level once more and tracing beyond the second position.
Claim 6
Independent Claim
187 words
A method of machining in a tracer machining system that is operable to effect tracing by tracing feeds and pick feeds and to effect clamping feeds at a preset clamping level, characterised in that the method comprises: in an initial tracing, storing a first position along the pick feed axis which position corresponds to the first tracing feed of a succession of tracing feeds in which clamping feed is effected,and storing a second position along the pick feed axis which position corresponds to a tracing feed, following next after the last tracing feed of the succession, in the course of which clamping feed is not effected, in dependence upon the stored positions, executing repeat tracings back and forth between those positions, in respective such repeat tracings after the initial tracing, changing the clamping level from an initial clamping level value applicable to the initial tracing, until in such a repeat tracing clamping feed is not effected at the changed clamping level set for that tracing or a limit clamping level value is reached, then, setting the initial clamping level once more and tracing beyond the second position.
References Cited (Backward Citations)
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