EP0129091A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Numerical control system, graphics display unit and machine tool
Assignee: Mitsubishi Electric Corp
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Filing: 1984-05-23
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Granted: —
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Expires: 2004-05-23
Abstract
Abstract A numerical control system in which possible interference between tools can be checked on a graphics display unit (60) and corrected, and complex workpiece and cutting path shapes are displayed without interference. In accordance with the invention, actual tool shapes in simplified form are displayed for checking interference. Two display memories (55) are provided so that, while one of the display memories is being used for active display, data can be written into or erased from the other. When the data entry and removal is complete, the display memories (55) are switched over so that the time during which portions of the displayed image disap- pearfrom the screen (56) is reduced to a negligible length. The workpiece shape is displayed as a shaded area, and any area in which a tool tip interferes is eliminated during simulated machining of the workpiece.
Inventors
- 👤 Katsuhide C/O Mitsubishi Denki K.K. Sekikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 09:57
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/406; G05B19/4069; G05B19/4061; G05B2219/00; G05B2219/30; G05B2219/35; G05B2219/35316; G05B2219/35349
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A numerical control system characterised by: a controller (40) for controlling a machine tool and a graphics display unit (50) connected to said controller; means (56) responsive to a workpiece shape (12a) for displaying the workpiece shape as a shaded image (20); means (52,54,55) responsive to a tool shape (12b) and tool movement information for moving said tool shape (12b); and means (52,55) for machining the workpiece in a simulated fashion on said graphics display unit by erasing an interference area (14) in which a tool tip shape (13) of said tool shape (12b) interferes with the workpiece shape displayed as the shaded image (20) due to movement of said tool tip shape (13).
Claim 2
Dependent Claim
114 words
A numerical control system characterised by: a controller (40) for controlling a machine tool and a graphics display unit (50) connected to said controller; means (56) responsive to a workpiece shape (12a) for displaying the workpiece shape as a shaded image (20); means (52,54,55) responsive to a tool shape (12b) and tool movement information for moving said tool shape (12b); and means (52,55) for machining the workpiece in a simulated fashion on said graphics display unit by erasing an interference area (14) in which a tool tip shape (13) of said tool shape (12b) interferes with the workpiece shape displayed as the shaded image (20) due to movement of said tool tip shape (13).
Claim 3
Dependent Claim
92 words
A control system according to claim 1 characterised in that said graphics display unit (50) comprises a circuit interface (52) for entering display data from said controller (40); a memory (53) for storing said display data through said circuit interface (52); a central processing unit (51) for processing the stored display data according to prescribed commands and issuing commands to a graphics interface (54); display memories (55) for storing the last-mentioned commands through said graphics interface (54); and a CRT (56) for displaying a prescribed graphics pattern from said display memories (55).
Claim 4
Dependent Claim
46 words
A control system according to claim 1 or 2 characterised in that said graphics display unit (50) comprises a display memory for displaying said tool shape (12b) and a writing and erasing memory, and means for alternatively switching over said memories to renew a displayed image.
Claim 5
Dependent Claim
103 words
A graphics display unit for a numerical control system, said unit characterised by: means (56) responsive to a workpiece shape (12a) for displaying the workpiece shape as a shaded image (20); means (52,54,55) responsive to a tool shape (12b) and tool movement information for moving said tool shape (12b); and means (52,55) for machining the workpiece in a simulated fashion on said graphics display unit by erasing an interference area (14) in which a tool tip shape (13) of said tool shape (12b) interferes with the workpiece shape displayed as the shaded image (20) due to movement of said tool tip shape (13).
Claim 6
Dependent Claim
103 words
A graphics display unit for a numerical control system, said unit characterised by: means (56) responsive to a workpiece shape (12a) for displaying the workpiece shape as a shaded image (20); means (52,54,55) responsive to a tool shape (12b) and tool movement information for moving said tool shape (12b); and means (52,55) for machining the workpiece in a simulated fashion on said graphics display unit by erasing an interference area (14) in which a tool tip shape (13) of said tool shape (12b) interferes with the workpiece shape displayed as the shaded image (20) due to movement of said tool tip shape (13).
Claim 7
Dependent Claim
14 words
A numerical control system characterised by a graphics display unit according to claim 4.
Claim 8
Dependent Claim
30 words
A machine tool system characterised by a numerical control system according to any one of claims 1 to 3 and 5 or a graphics display unit according to claim 4.
References Cited (Backward Citations)
No citation records indexed.
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