US Patent: 3,318,195
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| Controls for Machine Tools and the Like
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Patentee:
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| Arthur O. Fitzner (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI |
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Patent Dates:
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| Applied: |
Oct. 04, 1961 |
| Granted: |
May 09, 1967 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
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Description: |
| This patent was listed on a G & L Boring Mill patent plate.
This application is a continuation-in-part of my application filed 24 Sept., 1958, now Patent No. 3,016,778.
Abstract:
This invention relates in general to systems for controlling machine tools, and relates more particularly to improvements in systems for causing machine tools to execute automatically repetitive cycles of machining operations made up of a plurality of successive machining steps.
Claim:
In a system for controlling the positioning of a movable machine tool member in accordance with a repetitive program, the combination comprising a member mounted for movement, means for moving said member to successive positions, a reader responsive to successive blocks of information supplied thereto for creating successive sets of position information signals indicative of the desired positions of said member and for creating coded selection signals from at least some of said blocks, control means connected to receive said sets of position information signals and connected to said moving means for causing the latter to move said member to the corresponding positions, and means for modifying the operation of said control means, said last-named means comprising a plurality of adjustable signal sources, means responsive to each of said coded selection signals for selecting one of said sources to be effective during positioning of said member according to the corresponding set of position information signals, and means for superimposing the output of said selected signal source on said control means, whereby said member is caused to move to a position displaced from that designated by a set of position information signals according to the adjusted output of the selected source. |
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