Batch production system and batch production method
AssigneeHexagon Innovation Hub GmbH
InventorsSilvan Meile, Maximillian Macha
Life of this patent
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Abstract
A batch production system comprising a machine tool for consecutively machining a batch of workpieces into machined pieces, the machine tool comprising a workpiece support configured for supporting the workpieces, a cutting tool, a movement system configured for providing a relative movement between the cutting tool and the workpiece support with at least two degrees of freedom, a control unit configured for controlling the movement system based on numerical control data and compensation data for compensating volumetric positioning errors of the movement system. The numerical control data are based on nominal geometry data representing a target piece that is desired to be achieved when machining the batch of workpieces into the machined pieces.
Claims19
A batch production system comprising a machine tool for consecutively machining a batch of workpieces into machined pieces, the machine tool comprising:
- a workpiece support configured for supporting the workpieces,
- a cutting tool,
- a movement system configured for providing a relative movement between the cutting tool and the workpiece support with at least two degrees of freedom,
- a control unit configured for controlling the movement system based on
- numerical control data and
- a volumetric compensation map for compensating volumetric positioning errors of the movement system, wherein the volumetric positioning errors comprise intrinsic errors of the machine tool,
- wherein the numerical control data are based on nominal geometry data representing a target piece that is desired to be achieved when machining the batch of workpieces into the machined pieces,
- a computer configured for:
- receiving measurement data, the measurement data based on at least one geometrical property of at least one of the batch of machined pieces,
- modifying the volumetric compensation map based on the received measurement data and the nominal geometry data.
A batch production method of consecutively machining a batch of workpieces into machined pieces with a machine tool, the method comprising
- placing a first workpiece of the batch of workpieces at a workpiece support of the machine tool,
- providing numerical control data based on nominal geometry data representing a target piece that is desired to be achieved when machining the batch of workpieces into the machined pieces,
- machining the first workpiece into a first machined piece with a cutting tool of the machine tool and by controlling a movement system of the machine tool based on
- the numerical control data and
- volumetric compensation map for compensating volumetric positioning errors of the movement system, wherein the volumetric positioning errors comprise intrinsic errors of the machine tool,
- determining measurement data, the measurement data based on at least one geometrical property of the first machined piece,
- providing the measurement data to a computer,
- modifying the volumetric compensation map with the computer based on the measurement data and the nominal geometry data,
- placing a second workpiece of the batch of workpieces at the workpiece support of the machine tool,
- machining the second workpiece into a second machined piece with the cutting tool of the machine tool and by controlling the movement system of the machine tool based on
- the numerical control data and
- the modified volumetric compensation map.
Dependencies are inferred from the claim text.