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US 4,118,771 AGranted
Numerical control system for machine tools
AssigneeIng. C. Olivetti & C., S.p.A.
InventorsPiero Pomella, Luciano Lauro
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AssigneeIng. C. Olivetti & C., S.p.A.
InventorsPiero Pomella, Luciano Lauro
Estimating the term…
A numerical control system for machining centers, having a RAM and two groups of peripheral units, comprises two proessors interconnected by means of a common signal bus and adapted to operate simultaneously sharing access automatically to the RAM and to the peripheral units. One of the two processors is specialized for executing the computations relating to the interpolation of the path of the center of the tool with respect to the workpiece to be machined, while the second processor is specialized in control of the said peripherals. One group of peripherals comprises input and output means for data and programs and another group comprises a series of units for measuring and controlling the movement of the said tool and the said workpiece. The said processors are connected to the said memory and to the said input and output means by means of one signal bus, the measuring and control units are interconnected by means of a second signal bus connected to the first bus through a bidirectional interface.
In a machining centre or similar working machines, a numerical control system for controlling the relative movement of a tool and a workpiece to be machined in accordance with a predetermined machining program, comprising a program reading unit, an operating memory, at least one peripheral unit for measuring or controlling the movement of said tool and said workpiece, at least a pair of processors, a common signal bus means interconnecting said processors, said program reading unit, said operating memory and said peripheral unit for causing said processors to operate simultaneously, and sharing control means controlled by a program recorded in a program memory common to said two processors for causing a first one of said processors to control said peripheral unit and the second of said processors to execute the computations relating to the interpolation of the path of said tool with respect to said workpiece, said two processors automatically sharing access to said memories and said peripheral unit.
In a machining centre or similar working machines, a numerical control system for controlling the relative movement of a tool and a workpiece to be machined in accordance with a predetermined machining program, comprising a first group of peripheral units including input and output means for data and programs, a second group of peripheral units including a series of units for measuring and controlling the movement of said tool and said workpiece, a program reading unit, a random access memory, at least first and second of processors, a first common signal bus interconnecting said processors, said program reading unit, said memory and said input and output means for causing said processors to operate simultaneously, a second common signal bus interconnecting said measuring and control units, a bidirectional interface connecting said first signal bus and said second signal bus, and sharing control means for causing said processors to automatically share access to said memory and to said peripheral units.
Dependencies are inferred from the claim text.