Abstract: In a method of generating a numerical control program in which, based on sectional shape data of a product to which a relief processing is to be performed, a numerical control program for turning-processing the product is generated in order to recognize a groove shape data existing in the vicinity of a corner as a relief sectional shape, wherein groove shape data is extracted from the sectional shape data, an intersection of a line segment parallel to a turning axis and a line segment that is not parallel to the line segment is calculated as a corner of the sectional shape data, and the groove shape data is recognized as a relief sectional shape in a case where dimensions of a frame which includes from the corner to the groove shape data are within predetermined dimensions.

Abstract: An apparatus that creates, based on shape data of an object to be machined and grinding allowance data for the shape data, a numerically controlled machining program that has the grinding allowance data reflected in the shape data, is configured to include storing means 2 and 4 that store the shape data of the object to be machined and the grinding allowance data; a shape data modification means 5 that modifies the shape data to create, based on the grinding allowance data, shape data having a grinding allowance; and a numerically controlled machining program creation means 6 that creates a numerically controlled machining program for the modified shape data, with the apparatus enabling easy and efficient creation of a numerically controlled machining program having the grinding allowance reflected in the shape data.

Abstract: A level difference or a uncut portion is prevented from being left between adjoining worked regions without forming any useless worked region. A lathe sectional shape forming unit (222) produces a sheet model of a lathe sectional shape in an X-Z plane on the basis of the solid model of a lathe shape formed by a lathe shape forming unit (220). A first/second step working sectional shape forming unit (227) produces sheet models of the worked sectional shapes of the first step and the second step on the basis of the sheet model of the lathe sectional shape, a step dividing position and an overlap amount. A first step disused shape deleting unit (229) and a second step disused shape deleting unit (230) delete the shape needing no work, from the sheet models of the worked sectional shapes of the first step and the second step.

Abstract: An apparatus that creates, based on shape data of an object to be machined and grinding allowance data for the shape data, a numerically controlled machining program that has the grinding allowance data reflected in the shape data, is configured to include storing means 2 and 4 that store the shape data of the object to be machined and the grinding allowance data; a shape data modification means 5 that modifies the shape data to create, based on the grinding allowance data, shape data having a grinding allowance; and a numerically controlled machining program creation means 6 that creates a numerically controlled machining program for the modified shape data, with the apparatus enabling easy and efficient creation of a numerically controlled machining program having the grinding allowance reflected in the shape data.

Abstract: A numerical control programming method is characterized by comprising: a machining unit editing step for generating an edited machining unit by editing, based on an input, at least one machining unit out of a plurality of machining units which configure a first machining program generated based on a first material shape model and a product shape model; a second non-edited machining unit generating step for generating a second non-edited machining unit which corresponds to a machining shape model having no duplication with a machining shape model which corresponds to the edited machining unit based on a first non-edited machining unit which is a machining unit other than the edited machining unit out of the plurality of machining units which configure the first machining program; and a second machining program generating step for generating a second machining program including the edited machining unit and the second non-edited machining unit.

Abstract: In a method of generating a numerical control program in which, based on sectional shape data of a product to which a relief processing is to be performed, a numerical control program for turning-processing the product is generated in order to recognize a groove shape data existing in the vicinity of a corner as a relief sectional shape, wherein groove shape data is extracted from the sectional shape data, an intersection of a line segment parallel to a turning axis and a line segment that is not parallel to the line segment is calculated as a corner of the sectional shape data, and the groove shape data is recognized as a relief sectional shape in a case where dimensions of a frame which includes from the corner to the groove shape data are within predetermined dimensions.

Abstract: In an NC program generating device that extracts shaping sites that are process areas of a workpiece based on the three-dimensional geometrical data of the unprocessed workpiece and the three-dimensional geometrical data of the processed workpiece and generates an NC program in accordance with the extracted shaping sites, the process attribute information setting unit sets up workpiece attribute information, based on related information of process operations feasible on the processing machine for the workpiece and the features, position, and direction of a shaping site of the three-dimensional shape of the processed workpiece that is configurable in the process attribute information.

Abstract: When a material shape model is separated in shear through processing, a shape model of a material in a state of being suspended remains in mid-air, and thus, interference is detected excessively. In order to prevent the excessive detection of interference, in a processing simulation method for generating a shape model of a processed material from a shape model of a material and a shape model of a tool processing area which is defined from a shape model of the tool and a movement path of the tool, the shape model of the material being separated into a plurality of shapes by processing is detected; a material shape to be cut-off is extracted from the separated material shapes; and the extracted material shape to be cut-off is excluded from subject of simulation.

Abstract: A level difference or a uncut portion is prevented from being left between adjoining worked regions without forming any useless worked region. A lathe sectional shape forming unit (222) produces a sheet model of a lathe sectional shape in an X-Z plane on the basis of the solid model of a lathe shape formed by a lathe shape forming unit (220). A first/second step working sectional shape forming unit (227) produces sheet models of the worked sectional shapes of the first step and the second step on the basis of the sheet model of the lathe sectional shape, a step dividing position and an overlap amount. A first step disused shape deleting unit (229) and a second step disused shape deleting unit (230) delete the shape needing no work, from the sheet models of the worked sectional shapes of the first step and the second step.

Abstract: A processing simulation method and apparatus is provided, which can appropriately detect interference between a tool processing area and a shape model of a material without being affected by the accuracy of expression of a tool movement path and the shape model. A tool shape model for processing a material, that includes a strict tool shape, and a tool shape model for checking interference, that is included in the strict tool shape, are generated by tool model setting unit according to an error range set in consideration of the tool movement path and the expression accuracy of the shape model, and the processed material shape model is generated by generating a tool processing area shape model from the tool movement path during processing feed and the tool shape model for processing the material and removing the tool processing area shape model from the material shape model.

Abstract: Even in an uncuttable state in which an actual rotational direction of a main spindle is not matched with an actually cuttable main spindle rotational direction of a tool, an interference check between a workpiece and the tool is performed. Accordingly, the cuttable main spindle rotational direction of the selected tool or the uncuttable main spindle rotational direction is compared with each main spindle rotational direction of a working machine during execution of a simulation, and it is determined whether an interference check between the tool blade edge and the workpiece is necessary on the basis of the comparison result. When it is determined that the interference check is not necessary in the step above, the interference check between the tool blade edge and the workpiece is not performed. When it is determined that the interference check is necessary, the interference check between the tool blade edge and the workpiece is performed.

Abstract: In an NC program generating device that extracts shaping sites that are process areas of a workpiece based on the three-dimensional geometrical data of the unprocessed workpiece and the three-dimensional geometrical data of the processed workpiece and generates an NC program in accordance with the extracted shaping sites, the process attribute information setting unit sets up workpiece attribute information, based on related information of process operations feasible on the processing machine for the workpiece and the features, position, and direction of a shaping site of the three-dimensional shape of the processed workpiece that is configurable in the process attribute information.