Abstract:
A position control apparatus has a target setting unit for setting a target position in a direction of the control axis of the controlled object able to be moved in directions of a plurality of control axes by moving unit; a position control unit for independently positioning the controlled object to the target position in the direction of the control axis set by the target position setting unit; and a position correcting unit for correcting the target positions in directions of other control axes by compensation amounts for correcting positioning derivation in directions of other control axes occurring when positioning the controlled object to a first target position in the direction of one control axis among the plurality of control axes and then reversing the feed direction from that first target position and positioning to a second target position.
Abstract:
A positioning control method (80) has a setting section (81) for setting a comparison reference value in accordance with a machine tool in advance, a detecting section (82) for detecting a command value by the rapid traverse command G00, a comparing section (83) for comparing the comparison reference value and the command value, and a determining section (84) for changing the rapid traverse command G00 to a linear interpolation command G01 when the command value is smaller than the comparison reference value, executing the rapid traverse value G00 when the command value is larger than the comparison reference value, and selecting either one of the rapid traverse command G00 or the linear interpolation command G01 when the comparison reference value is equal to the command value. Less effective short-distance rapid traverse command is converted to the linear interpolation command, thus speeding up positioning control to make an entire processing of the workpiece faster.
Abstract:
A control apparatus for a drilling machine and a drilling method capable of quick adaptation to drilling by drills of various diameters, especially drills of small diameters, and of improving cutting efficiency. The control apparatus includes a cutting condition setting unit for setting the cutting conditions in accordance with the depth of the hole being drilled and a control unit for controlling the rotary speed and movement position of the drill. The cutting condition setting unit defines the regions of the beginning part, the inner part, and the penetration part from the side close to the drill of the workpiece toward the depth direction of the hole of the workpiece in accordance with the depth of the hole when drilling a throughhole.
Abstract:
A longer life, low cost tool and tool holder enabling change of posture with respect to a spindle, having a high machining accuracy of a workpiece, and resistant to generation of vibration or heat, provided with a working tool for processing a workpiece, a motor having an output shaft to which the working tool is connected and rotating the working tool, a first holder for holding the working tool and the motor, a mount attached to the spindle, a generator to which rotational force is transmitted from the spindle through the mount and generating electric power for driving the motor, a second holder for holding the mount rotatably, holding the generator, and engaged with a nonrotating portion of the machine tool, and a posture adjustment mechanism which connects the first holder and the second holder and is able to change the posture of the working tool with respect to the spindle.
Abstract:
The invention relates to improvements in a tilting mechanism for a saddle swivel head for a double housing type machine tool. The saddle swivel head 13 is provided at the sides thereof in the tilting direction with hydraulic cylinders 18R, 18L, to which is connected a hydraulic piping system 19 for giving swivel balancing pressures and back pressures when the swivel head 13 is tilted by a predetermined angle by a tilting driving mechanism. The saddle swivel head 13 is tilted while providing swivel balancing pressures to the hydraulic cylinders 18R, 18L, and after tilting the head by the predetermined angle, back pressures are applied to the hydraulic cylinders 18R, 18L to compensate for a tilting moment of the saddle swivel head 13.
Abstract:
A device for clamping coaxial, first and second spindles of a machine tool to each other. The first spindle is hollow and rotatably supported by a spindle head. The second spindle is rotatably supported in the first spindle and can be moved back and forth in the axial direction of the second spindle. The device includes a space formed between portions of both the spindles; disc springs are provided in the space to exert an axial force; and a pair of clamp rings are disposed on both sides of the springs, for clamping both the spindles to each other due to a wedge action through the force of the disc springs. An oil chamber is formed at one side of the pair of clamp rings in order to release the clamping of both the spindles when oil pressure is applied. A hydraulic pressure source is provided for supplying pressurized oil into the oil chamber through a static pressure pocket provided at the place where the first spindle is in sliding contact with a bush encircling the first spindle.
Abstract:
A cutting tool for a machine tool is provided in order to cut an inside corner of a workpiece. The cutting tool has at least one cutting edge formed on its bottom. In operation, the cutting tool is rotated by the machine tool. Further, both cutting tool and workpiece move relatively to each other in accordance with the rotating angle of the cutting tool so that the cutting tool has its outer end describing a moving track in agreement with the contour of an inside corner of the workpiece. The cutting tool further moves along the direction of a rotating axis of the cutting tool in rotation.
Abstract:
This invention provides a sheet which has a chemical indicator, in particular, a composition layer for use as an indicator in hydrogen peroxide plasma sterilization, and further provides a packaging bag for said sterilization with use of such an indicator. Said composition layer comprises both a dye which can change color when contacted with hydrogen peroxide vapor or plasma derived from hydrogen peroxide, and a certain organic amine compound.
Abstract:
A profile processing method and a processing machine therefor which can obtain a good finish surface accuracy in all the carving surfaces and curb the decrease in tool's life are provided.More specifically, an end mill is first moved along an outermost side of an annular groove in carving the annular groove to a work. Consequently, the end mill is gradually moved to inside to be moved and carve along the annular groove. When the outermost side of the annular groove is carved, the movement path of the end mill is selected so that the outermost side is down-cut (counterclockwise in FIG. 5). When further inner side is carved, the movement path of the end mill is selected so that the direction of the relative movement path is opposite to the direction of the relative movement path when the outermost side is carved, in other words, the carved surfaces are down-cut by the end mill.
Abstract:
Apparatus for measuring a displacement of a movable member or a diameter of a cylindrical member comprises a photoelectric converting element array to convert light reflected by the surface of the member for producing an electric signal utilized to form a pattern information of the surface. The characterizing points of the pattern information are extracted and binarized into a binary pattern information which is compared with a reference pattern information. The difference between them is accumulated to determine the displacement. To measure a diameter the displacement thus obtained is divided by circular constant n.