摘要:
Disclosed is a method for, when a surface of a workpiece is preheated with a laser beam during milling, calculating an optimum preheating temperature according to a type of the workpiece and controlling a surface preheating temperature. The method includes: a processing condition inputting step; a matching step; a loading step; a preheating step; a measuring step; a comparing step; an ending step; a lower limit determining step; an output increasing step; and an output decreasing step.
摘要:
A system for polishing a semiconductor wafer, the system comprising a wafer polishing assembly for polishing a face of a semiconductor wafer at a polishing rate and a polishing uniformity, the wafer polishing assembly including a platen subassembly defining a polishing area, and a polishing head selectively supporting a semiconductor wafer and holding a face of the semiconductor wafer in contact with the platen subassembly to polish the wafer face; and a controller selectively adjusting one of a plurality of adjustable polishing parameters during polishing of the wafer.
摘要:
A system for polishing a semiconductor wafer, the system comprising a wafer polishing assembly for polishing a face of a semiconductor wafer at a polishing rate and a polishing uniformity, the wafer polishing assembly including a platen subassembly defining a polishing area, and a polishing head selectively supporting a semiconductor wafer and holding a face of the semiconductor wafer in contact with the platen subassembly to polish the wafer face; and a controller selectively adjusting one of a plurality of adjustable polishing parameters during polishing of the wafer.
摘要:
A system for polishing a semiconductor wafer, the system comprising a wafer polishing assembly for polishing a face of a semiconductor wafer at a polishing rate and a polishing uniformity, the wafer polishing assembly including a platen subassembly defining a polishing area, and a polishing head selectively supporting a semiconductor wafer and holding a face of the semiconductor wafer in contact with the platen subassembly to polish the wafer face; and a controller selectively adjusting one of a plurality of adjustable polishing parameters during polishing of the wafer.
摘要:
A system for polishing a semiconductor wafer, the system comprising a platen subassembly defining a polishing area; a polishing head selectively supporting a semiconductor wafer and holding a face of the semiconductor wafer in contact with the platen subassembly to polish the wafer face; and means for heating the wafer while the wafer face is being polished.
摘要:
A turning machine includes a controller for generating both aspherical and non-symmetrical shape components defining the predetermined shape, and a controller for controlling a spindle and a positionable cutting blade to thereby form a predetermined non-rotationally symmetric shape in a workpiece surface. The apparatus includes a rotatable spindle for rotatably mounting the workpiece about an axis, a spindle encoder for sensing an angular position of the rotating workpiece, the cutting blade, and radial and transverse positioners for relatively positioning the cutting blade and workpiece along respective radial and transverse directions. The controller cooperates with a fast transverse positioner for positioning the cutting blade in predetermined varying transverse positions during a revolution of the workpiece.
摘要:
A technique for optimizing metal extrusion process parameters includes receiving values representing properties of an extrusion press machine, and calculating an estimated surface exit temperature of a metal work product resulting from an extrusion of a metal billet using the extrusion press machine based on the machine property values, an initial temperature of the metal billet prior to the extrusion, an extrusion force applied to the metal billet during the extrusion, and an extrusion speed of the metal work product. The estimated surface exit temperature of the metal work product is compared with a target hot shortness exit temperature of the metal work product. The initial temperature of the metal billet, the extrusion speed, and the extrusion force are changed based on the comparison until the estimated surface exit temperature equals the target hot shortness exit temperature.
摘要:
When warm-up operation is started, a machine tool acquires an atmospheric temperature around the machine tool and selects a warm-up operation program on the basis of the acquired atmospheric temperature. A warm-up operation command suitable for the atmospheric temperature is given to the control unit according to the selected warm-up operation program. A movable unit of the machine tool can be thereby controlled, and optimum warm-up operation for the atmospheric temperature can be eventually performed.
摘要:
Disclosed is a method for, when a surface of a workpiece is preheated with a laser beam during milling, calculating an optimum preheating temperature according to a type of the workpiece and controlling a surface preheating temperature. The method includes: a processing condition inputting step; a matching step; a loading step; a preheating step; a measuring step; a comparing step; an ending step; a lower limit determining step; an output increasing step; and an output decreasing step.
摘要:
When warm-up operation is started, a machine tool acquires an atmospheric temperature around the machine tool and selects a warm-up operation program on the basis of the acquired atmospheric temperature. A warm-up operation command suitable for the atmospheric temperature is given to the control unit according to the selected warm-up operation program. A movable unit of the machine tool can be thereby controlled, and optimum warm-up operation for the atmospheric temperature can be eventually performed.