A numerical control device that controls a servomotor on the basis of a machining program. The machining program determines whether or not to perform correction on reversal of a moving direction of a mechanical system driven in a movement axis direction by the servomotor. This is done on the basis of the machining program including an instruction that causes the reversal of the moving direction of the mechanical system and another instruction to be executed later than the instruction.

A fabricating apparatus includes a fabricating device, a sensor, and a control unit. The fabricating device is configured to fabricate a fabrication layer according to fabrication data of a three-dimensional object. The sensor is configured to measure a shape of the fabrication layer. The control unit is configured to control the fabricating device according to the fabrication data and the shape of the fabrication layer measured with the sensor.

A numerical control device that controls a servomotor on the basis of a machining program. The machining program determines whether or not to perform correction on reversal of a moving direction of a mechanical system driven in a movement axis direction by the servomotor. This is done on the basis of the machining program including an instruction that causes the reversal of the moving direction of the mechanical system and another instruction to be executed later than the instruction.

A servo control device controls a combined position of a first servo system and a second servo system having higher response than response of the first servo system. The servo control device includes a first axis target value creation unit and a correction unit. The first axis target value creation unit creates a first axis target value based on a combined command value which is a position command value of the combined position. The correction unit converts the first axis target value into a first axis command value by using a first transfer function. In addition, the correction unit converts the first axis target value by using a second transfer function, and calculates a second axis command value by subtracting the converted first axis target value from the combined command value. The product of the first transfer function and a first model transfer function which models characteristics of the first servo system is equal to the product of the second transfer function and a second model transfer function which models characteristics of the second servo system.

An external modelling method, including applying to a nose of initial external shape F.sub.0, at least two modelling instruments I, to guide the growth of the nose cartilage and thus obtain a target final external nose shape F.sub.f when the individual has stopped growing, which differs from a natural external shape F.sub.n which would be obtained naturally in the absence of intervention. A set of modelling instruments is provided, the successive shapes of which are determined to represent an evolving succession of one or more target intermediate shapes F, from the initial external nose shape F.sub.0 through to the target final external shape F.sub.f. A method of producing the modelling instruments is provided, during which method, starting from the initial external nose shape F.sub.0, a target final shape F.sub.f and at least one target intermediate shape F are determined. The instruments corresponding to each target shape are manufactured.

A system and method is provided that facilitates computing surfaces for layers of a multi-layer part. The system may include at least one processor configured to determine a plurality of surfaces for layers of at least one material that form a multi-layer part by repeatedly carrying out a level set method computation. The level set method computation may be carried out relative to an interface surface that propagates outwardly with each determined surface for each layer with respect to an initial surface, based on data that defines at least one thickness of the material in each layer and at least one drop-off rate of the material at a boundary of the material in each layer.

A cut data generating apparatus for generating cut data for allowing a cutting apparatus including a cutting mechanism to cut a pattern out of a target workpiece includes a controller, the controller being configured to control the cut data generating apparatus to: identify an outline of the pattern; form a first cutting line that has a jagged shape swinging with a predetermined swinging amount in a direction intersecting with the outline, along the outline; and generate the cut data for cutting along the first cutting line.