Patent US3928827A successfully refreshed from Google Patents.
US3928827A
Expired / Lapsed
US
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Device for the photoelectric marking and reading of tools for NC machine tools
Assignee: Vyzkumny Ustav Obrabecich Stroju a Obrabeni
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Filing: 1974-05-22
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Granted: 1975-12-23
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Expires: 1994-05-22
Abstract
Abstract A device for photoelectric marking and reading, useful with tools for NC machine tools equipped with a tool magazine and device for an automatic tool exchange. The device includes a system of coding fields optically differentiated by a different transmittance or reflectance of light, and comprises a coding plate provided with coding fields arranged in several lines and reading phototransmitters that are arranged in one line in a reading head. In the reading head, opposite the line of the phototransmitters, there is situated a corresponding line of light sources so, that one individual light source corresponds to each phototransmitter, the light sources and their corresponding phototransmitters together forming a reading couples, the number of these reading couples corresponding to the number of coding spots in one line of the coding plate.
Inventors
- 👤 Jiri Kepka
- 👤 Karel Kovarik
- 👤 Bohuslav Loun
- 👤 Jaromir Zeleny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:45
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10861; B; B23; B23Q; B23Q3/00; B23Q3/155; B23Q3/1552; B23Q3/15546; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/124
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
In a machine tool equipped with a tool magazine device for an automatic tool exchange, the improvement which comprises a holder for a tool to be exchanged, a coding plate affixed to the tool holder, a clamping holder, and a reading head, means mounting the reading head on the clamping holder, the tool holder and the coding plate mounted thereon being slidably movable past the reading head to permit the reading of the coding plate by the reading head, and at least one guide comprising inter-fitting and relatively slidable parts on the tool holder and the reading head to position such parts relative to each other.
Claim 2
Dependent Claim
106 words
In a machine tool equipped with a tool magazine device for an automatic tool exchange, the improvement which comprises a holder for a tool to be exchanged, a coding plate affixed to the tool holder, a clamping holder, and a reading head, means mounting the reading head on the clamping holder, the tool holder and the coding plate mounted thereon being slidably movable past the reading head to permit the reading of the coding plate by the reading head, and at least one guide comprising inter-fitting and relatively slidable parts on the tool holder and the reading head to position such parts relative to each other.
Claim 3
Dependent Claim
61 words
Apparatus according to claim 1, wherein the means mounting the reading head permits limited movement of the reading head relative to clamping holder in a plane normal to the direction of sliding movement of the reading head relative to the clamping holder, and means limiting such movement in said plane normal to said direction of sliding movement of the reading head.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 2, comprising means yieldably urging the reading head to a central position in said plane normal to the direction of the sliding movement of the reading head.
Claim 5
Dependent Claim
35 words
Apparatus according to claim 1, wherein the coding plate is provided with light receiving coding field arranged in several lines, and the reading head is provided with reading photo-transmitters that are arranged in one line.
Claim 6
Dependent Claim
64 words
Apparatus according to claim 4, wherein in the reading head, which is disposed opposite the line of the photo-transmitters there is disposed a corresponding line of light sources, one individual light source corresponding to each phototransmitter so that together they form a reading couple, the number of such reading couples corresponding to the number of coding fields in one line of the coding plate.
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |