US Patent: 3,970,830
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| Computer Controlled Machine Tool Contouring System
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Patentees:
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| Philip H. White (exact or similar names) - Claremont, Sullivan County, NH |
| Bernard W. Wilterdink (exact or similar names) - Claremont, Sullivan County, NH |
| USPTO Classifications: |
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318/567, 451/5, 700/172, 700/176, 700/180, 700/187, 700/189, 700/190, 700/7, 700/76, 91/361
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 24, 1974 |
| Granted: |
Jul. 20, 1976 |
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Joel Havens
"Vintage Machinery" entry for Cone Automatic Machine Co., Inc.
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Description: |
| Abstract:
A computer controlled machine tool contouring system having a cutting element which is positioned relative to a workpiece support table. An actuating means controls the workpiece support table to synchronously rotate about a first axis and slide along a second axis in response to a set of control signals. The actuating means further controls the cutting element to translate along a third axis (the third axis being parallel to the first axis and perpendicular to the second axis) in response to a further set of control signals. The control signals are generated by a control means from stored data signals which are representative of the coordinates of points on the desired workpiece contour, the desired pressure angle of the cutting element at each contour point, the current radius of the cutting element, and the desired cutting element motion along the third axis. The control means includes (1) a mini-computer programmed to establish overall system control and to transform input data signals to suitable form for subsequent processing, (2) a high speed computation network for generating digital control signals for driving the actuating means, and (3) an interface unit for transferring digital control signals between the computer, computation network, machine tool and an operator station. The signal processing performed by the mini-computer and the computation network is arranged in accordance with a programmed algorithm to provide control signals for directing the actuating means to position the workpiece support table and cutting element in a manner to accommodate a cutting element having a changing radius due to wear. In addition, the control signals produce (in accordance with the programmed algorithm) directed movement of the contact point of the cutting element relative to a point on the workpiece contour at a predetermined surface velocity and feedrate. |
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