Abstract: A machining simulation device is a machining simulation device which performs a machining simulation of the machine tool that machines a machining target based on a machining program with a tool, and includes: a machine simulation unit which performs, based on a position command and a transfer characteristic of the machine tool, a simulation of the movement of the machine tool when the machine tool is operated based on the machining program so as to estimate the position of the tool; and a machining simulation unit which performs a machining simulation of the machining target based on information of the tool and the position of the tool that is estimated.

Abstract: An evaluation work piece comprises at least one of parts (A) to (G) as follows on a surface machined by a machine tool: (A) a vertical level difference part having a vertical level difference, and flat surfaces arranged on both sides of the vertical level difference; (B) a direction reversing part at which a direction of movement of a tool in a height direction is reversed when the tool is used for machining of a three-dimensional object including a curved surface; (C) a corner part at which a direction of movement of the tool changes; (D) a flat surface part; (E) a boundary part between a flat surface and a curved surface with a changing curvature; (F) a curved surface part having a curved surface with a changing curvature; and (G) a curved surface part at which command points are aligned regularly between adjacent tool paths on a curved surface.

Abstract: A controller for a machine tool includes a machine learning apparatus configured to learn an Nth-order time-derivative component of a speed of each axis of the machine tool. The machine learning apparatus includes: a state observation section configured to observe first state data representing the Nth-order time-derivative component of the speed of each axis as a state variable representing a current state of an environment; a determination data acquisition section configured to acquire determination data representing a properness determination result of at least any one of machining accuracy, surface quality, and machining time of the machined workpiece; and a learning section configured to learn the Nth-order time-derivative component of the speed of each axis in relation to at least any one of the machining accuracy, the surface quality, and the machining time of the machined workpiece using the state variable and the determination data.

Abstract: A machining defect factor estimation device includes a machine learning device that learns an occurrence factor of a machined-surface defect based on an inspection result on a machined surface of a workpiece. The machine learning device observes the inspection result on the machined surface of the workpiece from an inspection device, as a state variable, acquires label data indicating the occurrence factor of the machined-surface defect, and learns the state variable and the label data in a manner such that they are correlated each other.

Abstract: A machined surface quality evaluation device includes a machine learning device that learns a result of evaluation on machined surface quality of a workpiece by an observer which correspond to an inspection result on the machined surface quality of the workpiece. The machine learning device observes the inspection result on the machined surface quality of the workpiece as a state variable, acquires label data indicating the result of the evaluation on the machined surface quality of the workpiece by the observer, and learns the state variable and the label data in a manner such that they are correlated each other.

Abstract: Provided is a numerical controller capable of calculating an optimum feed rate in machining in which cutting is performed in a different direction from a direction of a spindle axis. The numerical controller includes a tool data storage unit for storing tool data related to a tool attached to the spindle axis, a command analyzer for reading and analyzing a command block from the machining program, and generating movement command data for relatively moving the spindle axis with respect to the workpiece and spindle axis rotation command data for rotating the spindle axis, and a cutting speed controller for calculating a recommended cutting feed rate of the spindle axis based on the tool data of the tool, and clamping a cutting feed rate of the spindle axis included in the movement command data at the recommended cutting feed rate when the cutting feed rate of the spindle axis is larger than the recommended cutting feed rate.

Abstract: A numerical control device for a machine tool includes: a timing calculation unit configured to calculate a start timing of a post-reverse movement command by which a position, where the sum of velocities generated in response to a pre-reverse movement command and the post-reverse movement command becomes zero, is equal to a position distanced by an in-position width from the end point of the pre-reverse movement command; and a movement command start unit configured to start the post-reverse movement command in accordance with the start timing calculated by the timing calculation unit.

Abstract: A numerical controller carries out acceleration/deceleration control over an interpolation pulse produced based on command blocks. This numerical controller exercises acceleration/deceleration control processing over the interpolation pulse based on an acceleration/deceleration setting which corresponds to the command blocks, and outputs a first speed pulse. The numerical controller exercises acceleration/deceleration control processing over the first speed pulse such that command blocks overlap each other, based on an overlapping shared acceleration/deceleration setting which does not depended on the command blocks, and outputs a second speed pulse.

Abstract: A numerical control device for a machine tool includes: a timing calculation unit configured to calculate a start timing of a post-reverse movement command by which a position, where the sum of velocities generated in response to a pre-reverse movement command and the post-reverse movement command becomes zero, is equal to a position distanced by an in-position width from the end point of the pre-reverse movement command; and a movement command start unit configured to start the post-reverse movement command in accordance with the start timing calculated by the timing calculation unit.

Abstract: A numerical controller controls an object for movement along a movement path according to a machining program. If consecutive command blocks are oriented in the same direction, they are set as a single vector. These three consecutive vectors (first, second, and third vectors) thus created are determined to be located at a pick-feed section if the first and third vectors are oriented in the same direction and if the length of the second vector is within a predetermined range. The movement path is corrected to a path that successively linearly connects the start point of the first vector, points on the first and third vectors, and the end point of the third vector.

Abstract: A numerical controller controls an object for movement along a movement path according to a machining program. If consecutive command blocks are oriented in the same direction, they are set as a single vector. These three consecutive vectors (first, second, and third vectors) thus created are determined to be located at a pick-feed section if the first and third vectors are oriented in the same direction and if the length of the second vector is within a predetermined range. The movement path is corrected to a path that successively linearly connects the start point of the first vector, points on the first and third vectors, and the end point of the third vector.

Abstract: A protector effectively suppresses infections. The protector protects a tube entry part, where a tube passes through the skin of a living body, from infections, and includes a sticking part that is stuck onto the skin of the living body in a periphery of the tube entry part, and a covering that covers the tube entry part, forms an internal space that surrounds the tube entry part, and has a passage through which the tube passes. The covering is provided with an opening that can be freely opened and closed with a cap or the like.

Abstract: The present invention relates to a sheet-like medical covering member, which covers the surface of a medical device attached inside a living body and/or to a percutaneous site, and thereby allows the medical device to be fixed inside a living body and/or to a percutaneous site, so as to allow the medical device to stably stay there for a long period of time, wherein the sheet-like medical covering member is modified by a hydrophilic surface treatment, and/or by a coating treatment with calcium phosphate ceramics or with a composition comprising a biopolymer.

Abstract: A protector effectively suppresses infections. The protector protects a tube entry part, where a tube passes through the skin of a living body, from infections, and includes a sticking part that is stuck onto the skin of the living body in a periphery of the tube entry part, and a covering that covers the tube entry part, forms an internal space that surrounds the tube entry part, and has a passage through which the tube passes. The covering is provided with an opening that can be freely opened and closed with a cap or the like.

Abstract: Tool feed speed Fa (mm/min) is calculated for each tool feed step on the basis of a tool feed speed F (mm/rev) specified in advance and the actual rotational speed Sact of the spindle (rev/min). The tool feed speed Fa (mm/min) and the tool feed speed Fold of the previous cycle (initially, a value based on the maximum rotational speed S of the spindle as a tentative feed speed Fold) are compared, and if a change has been detected, a tool feed speed Fb (mm/min) for the subsequent tool feed step is calculated based on the relation between the tool feed speed Fc (mm/min) based on the subsequent maximum rotational speed S of the spindle (rev/min), the maximum rotational speed S of the spindle (rev/min), and the rotational speed Sact of the spindle (rev/min); and the tool feed speed undergoes pre-interpolation acceleration/deceleration control on the basis of the subsequent tool feed speed Fb (mm/min) and the tool feed speed Fa (mm/min).