Abstract: An infrared transmissivity measurement method is for measuring an infrared transmissivity of a quartz glass crucible which includes a transparent layer made of quartz glass that does not contain bubbles, a bubble layer formed outside the transparent layer and made of quartz glass containing bubbles, and a semi-molten layer formed outside the bubble layer and made of raw material silica powder solidified in a semi-molten state. The infrared transmissivity measurement method includes processing an outer surface of the quartz glass crucible formed by the semi-molten layer to lower a surface roughness of the outer surface; and measuring an infrared transmissivity of the quartz glass crucible based on infrared light passing through the outer surface after processing the outer surface.

Abstract: A quartz glass crucible 1 having a cylindrical side wall portion 10a, a bottom portion 10b, and a corner portion 10c includes a transparent layer 11 as an innermost layer made of quartz glass, a semi-molten layer 13 as an outermost layer made of raw material silica powder solidified in a semi-molten state, and a bubble layer 12 made of quartz glass interposed therebetween. An infrared transmissivity of the corner portion 10c in a state where the semi-molten layer 13 is removed is 25 to 51%, the infrared transmissivity of the corner portion 10c in the state where the semi-molten layer 13 is removed is lower than an infrared transmissivity of the side wall portion 10a, and the infrared transmissivity of the side wall portion 10a in the state where the semi-molten layer 13 is removed is lower than an infrared transmissivity of the bottom portion 10b.

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 transmitting apparatus for transmitting user data, includes: an establishing section that establishes three or more transmission paths for a receiving apparatus; a first generation section that generates a user data unit which includes user data to be transmitted to the receiving apparatus; and a second generation section that generates an error correction data unit which includes error correction data to be used for error correction of the user data to be transmitted to the receiving apparatus. At least one of the three or more transmission paths transmits the error correction data unit, and at least two of the three or more transmission paths transmits the user data unit.

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 transmitting apparatus for transmitting user data, includes: an establishing section that establishes three or more transmission paths for a receiving apparatus; a first generation section that generates a user data unit which includes user data to be transmitted to the receiving apparatus; and a second generation section that generates an error correction data unit which includes error correction data to be used for error correction of the user data to be transmitted to the receiving apparatus. At least one of the three or more transmission paths transmits the error correction data unit, and at least two of the three or more transmission paths transmits the user data unit.

Abstract: An automatic programming method of dividing a machining area into a first process region in which one end of a work model is held for a machining and a second process region in which other end of the work model is held for the machining, and creating a program for controlling a numerical control unit based on the division of the machining area realizes an automatic process dividing processing by calculating a position of evenly dividing the volume of the machining area in a direction of a turning axis as a process-dividing position indicating the boundary between the first process region and the second process region.

Abstract: A machining unit corresponding to a cursor position in an editor section and in a synthetic model of a product model and a work model displayed in a model display section is highlight-displayed, and at the time of editing a created NC creation program, it is clearly determined to which machining unit on the model the cursor position in the editor section corresponds.

Abstract: Workpiece data involving a product shape and having a smallest diameter for lathe turning around a turning axis is selected from the workpiece database, by comparing dimension data of a workpiece data with dimension data of a product model in a state in which the product model is arranged on the turning axis and the workpiece data is arranged so that a center axis of each workpiece matches a center of the turning axis. The workpiece model for lathe turning is created based on the selected workpiece data.

Abstract: A first machining-program creating unit creates a machining program for a two-spindle machine, including machining programs for a first process performed by using a first main spindle and a second process performed by using a sub-spindle. A second machining-program creating unit creates a machining program for a one-spindle machine, including machining programs for a third process and a fourth process performed by using a second main spindle. A selecting unit determines a type of a machine to use, and selects either one of the first machining-program creating unit and the second machining-program creating unit to start, based on the determined type of the machine.

Abstract: An automatic programming method of dividing a machining area into a first process region in which one end of a work model is held for a machining and a second process region in which other end of the work model is held for the machining, and creating a program for controlling a numerical control unit based on the division of the machining area realizes an automatic process dividing processing by calculating a position of evenly dividing the volume of the machining area in a direction of a turning axis as a process-dividing position indicating the boundary between the first process region and the second process region.

Abstract: An automatic programming method includes a first processing including detecting a turning surface having a largest diameter in the product model, and determining a central axis of rotation on the turning surface detected as a turning axis of the product model; a second processing including shifting or rotating the product model so that the turning axis of the product model determined matches a turning axis of the work model; and a third processing including shifting the product model so that an end face of the product model shifted at the second processing matches a program origin preset in the work model, for automatically arranging the product model so as to be overlapped on the work model.

Abstract: Workpiece data involving a product shape and having a smallest diameter for lathe turning around a turning axis is selected from the workpiece database, by comparing dimension data of a workpiece model with dimension data of a product model in a state in which the product model is arranged on the turning axis and the workpiece model is arranged so that a center axis of each workpiece matches a center of the turning axis. The workpiece model for lathe turning is created based on the selected workpiece data.

Abstract: A machining unit corresponding to a cursor position in an editor section and in a synthetic model of a product model and a work model displayed in a model display section is highlight-displayed, and at the time of editing a created NC creation program, it is clearly determined to which machining unit on the model the cursor position in the editor section corresponds.

Abstract: A first machining-program creating unit creates a machining program for a two-spindle machine, including machining programs for a first process performed by using a first main spindle and a second process performed by using a sub-spindle. A second machining-program creating unit creates a machining program for a one-spindle machine, including machining programs for a third process and a fourth process performed by using a second main spindle. A selecting unit determines a type of a machine to use, and selects either one of the first machining-program creating unit and the second machining-program creating unit to start, based on the determined type of the machine.

Abstract: An automatic programming method includes a first processing including detecting a turning surface having a largest diameter in the product model, and determining a central axis of rotation on the turning surface detected as a turning axis of the product model; a second processing including shifting or rotating the product model so that the turning axis of the product model determined matches a turning axis of the work model; and a third processing including shifting the product model so that an end face of the product model shifted at the second processing matches a program origin preset in the work model, for automatically arranging the product model so as to be overlapped on the work model.