Abstract: A vertical machining center is retrofitted to permit the automatic machining of a plurality of like unfixtured parts loaded into the vertical machining center on a tray.

Abstract: A system for constructing devices for chucking workpieces in defined and reproducible positions on machine tools and measuring machines includes a mounting pipe which has grid points formed at regular coordinate distances and is provided in the longitudinal direction of the pipe with chamfers uniformly distributed over the circumference, wherein the grid points are formed on the chamfers in the form of concave spherical recesses, and wherein the center points of the spherical recesses are located on lines which extend parallel to the chamfers outside of the pipe body and which describe the ideal pipe shape.

Abstract: A vacuum coupling system according to the present invention is a mechanism that is used accurately to position and connect a vacuum coupling to a valve mechanism of a shell, which is formed by integrally attracting a wafer and a contactor to a wafer chuck by vacuum suction, in conducting a reliability test or other tests on IC chips that is formed on the wafer. This system comprises an air cylinder for advancing the vacuum coupling toward the valve mechanism, a positioning member to be advanced together with the vacuum coupling, a guide member for guiding the vacuum coupling to the valve mechanism in cooperation with the positioning member, a guide rail for guiding the around the wafer chuck while the positioning member is advancing, and a pair of POGO pins for returning the air cylinder to its neutral position.

Abstract: The present invention provides a method for machining hard materials using the machining fluids containing long chain alcohol in which the machining fluid is applied to a machining tool and then lubricates the machining of the workpiece by the machining tool and protects the machining tool during machining. The method is particularly useful when used with machining tools having a Mohs hardness of at least 9 and is most particularly useful when used with diamond machining tools.

Abstract: A machine for drilling oil-holes in crankshafts and the corresponding procedure. It can be used to drill one, two or more crankshafts per cycle. Each crankshaft can revolve on its own axis. The unit described is mounted on a horizontally-faced rotary table with vertical rotating axis, to place the crankshafts at different angles to the Z axis of the machining module, maintaining the horizontal position of the longitudinal axes of the crankshafts. Facing the unit is the machining module, provided with two horizontal spindles, drill tool-holders, with their corresponding guide bushings and parallel to each other, one on top of the other, at the same distance as the two crankshafts. The module has movement in three co-ordinates: axis X (horizontal-transverse), Y (vertical ) and Z (horizontal-presenting tools). A fourth axis W, (with additional module and independent action), moves parallel to Z and carries the guide bushings.

Abstract: An automatic tool changing device (ATC) for machining tools is disclosed. The ATC consists of arbor rotation guide means, arbor position changing means, arbor rotation means, tool changing means and ATC protection means. The ATC is positioned at a side of the movable table and effectively changes tools within the inner diameter circle of a rotary housing, thus shortening the arbor movement stroke and conserving the tool changing time during a tool changing operation. The ATC is also protected from the spindle stock of a machining tool, thus being free from any damage caused by chips from the spindle stock. The ATC is positioned at a side of the movable table in place of the column different from a typical ATC, so that it remarkably reduces the volume of the ATC protection cover and saves the manufacturing cost of such machining centers.

Abstract: The present invention is designed to realize structure having high rigidity in any direction and to realize a parallel mechanism machining device having good chip removal property. According to the present invention, forked adjustable joints 28 are provided at two positions near the tip end of a movable body 20 and near the rear end thereof, respectively, two first links 36 and two second links 37 are attached to the movable body 20 and the tip ends of these links are extended in X and Y axis directions and coupled to a machine-side fixed platform through adjustable joints, respectively. A link 5 extending in Z axis direction is attached to the rear end of the movable body 20 and a restriction link 6 is attached to the back of the forked adjustable joint 28 near the tip end.

Abstract: A method of forming a drive surface on an eccentric pin of a drive shaft for a scroll-type compressor is provided. First, an eccentric pin having an axis and a generally cylindrical outer surface disposed radially about the axis is provided. Next, a broaching tool having a machining face with a contour is provided. The contour may be a concave shallow bell-shaped curve. Finally, the drive surface is formed by engaging the outer surface with the machining face transverse to the axis. In this manner, the machining face forms a shape complementary to the contour on the eccentric pin thereby forming a slight crown on the drive surface. The broaching tool produces an adequate surface finish so that no subsequent machining operations to the drive surface are necessary.

Abstract: The present invention relates to a mechanical device that is used to attach polyester elastomeric fabric hoops to a furniture frame in an efficient and production-worthy manner. These elastomeric hoops are used as the back and seat portions of chairs, double occupant seats, and the like. The invention works by overstretching part of an elastomeric fabric hoop and inserting a furniture frame into the overstretched hoop portion. The fabric hoop is then allowed to reduce its size until it is tight around the frame, thereby eliminating the need for additional attachment means. The device is operated by two air-over-oil pneumatic cylinders, two pneumatic cylinders, and a series of electrical read switches. The device requires only compressed air and 110 volts of alternating electrical current to operate.

Abstract: A machine tool and more particularly a drilling and/or milling machine, which has a machine stand, on which a slide arrangement, which runs on guide rails and is motor driven, is able to be moved in either direction of horizontal motion. On this slide arrangement a working head is arranged to receive rotary tools. Underneath the working head in a working area a power driven machining table runs along vertical guide rails for the performance of vertical working movements. The working area is laterally delimited by two side walls at least partly, such side walls extending in parallelism to the longitudinal direction, the vertical guide rails for the working table being arranged on one of the side walls. This means that there is a simple design allowing for removal of shavings to the rear and accordingly a narrow form of the machine.

Abstract: The machine includes two turrets carrying a plurality of punch-die pairs, a magazine for these pairs, and a device for changing over the pairs. This device is formed from at least one changeover arm having two gripper elements, each comprising a pair of jaws operable by a common actuator. The two jaws are provided with a through-pin and are each engagable in a pair of channels, perpendicular to each other, carried by a flange of the punch or the die. When the gripper element moves parallel to the axis of the punch or the die, a first channel of the pair is disposed axially and has a quadrangular section, while the other channel is tangential and has a triangular section.

Abstract: The die changing apparatus for a plate reduction press machine, comprises an upper die support holder 28a and a lower die support holder 28b that are arranged vertically on opposite sides of a transfer line, and support holder guide rails 31 installed on the upper die support holder and extending substantially horizontally in the lateral direction of the transfer line, and an upper die 29a and a lower die 29b are mounted on the upper and lower die support holders, respectively using the rollers onto the dies, fixing devices 30 that fix the upper and lower dies on the upper and lower die support holders, respectively, die fastening members 38 which are placed on each side of the upper and lower dies, opposite each other in such a manner that they can be fastened to both dies, and a die changing mechanism that can move one of the die fastening members in a direction perpendicular to the transfer line.

Abstract: A cover installation apparatus installs continuous lengths of flashover protection covers around energized electrical power lines. The apparatus includes a cover assembly housing that takes a flat, extruded length of material and forms the material into a closed circular shape surrounding a power line. The cover assembly housing includes opposite first and second ends, with an inlet port in the first end and an outlet port in the second end. An interior passageway extends along a longitudinal direction from the inlet port to the outlet port and is configured to receive the power line therethrough. The interior passageway also provides a path for the flexible panel to follow from an uninstalled configuration to an installed configuration surrounding the power line.

Abstract: In the present invention, in cutting the top and bottom surfaces of a hot-rolled sheet by the rotation of milling cutters holding the sheet therebetween in the thickness direction of the sheet in the running process of the hot-rolled sheet, the cutting resistance determined by the cutting conditions including the type of hot-rolled sheet, the temperature in cutting, and the cut depth is controlled by the adjustment of cut depth, and cutting is performed by making the tension produced on the hot-rolled sheet by the cutting resistance lower than the breaking strength of the joint portion to prevent the breakage of hot-rolled sheet.

Abstract: In the present invention, in cutting the top and bottom surfaces of a hot-rolled sheet by the rotation of milling cutters holding the sheet therebetween in the thickness direction of the sheet in the running process of the hot-rolled sheet, the cutting resistance determined by the cutting conditions including the type of hot-rolled sheet, the temperature in cutting, and the cut depth is controlled by the adjustment of cut depth, and cutting is performed by making the tension produced on the hot-rolled sheet by the cutting resistance lower than the breaking strength of the joint portion to prevent the breakage of hot-rolled sheet.

Abstract: A tool holder includes a house and a clamping mechanism provided therein. The clamping mechanism includes a male member adapted to engage in a female-like opening in a tool. The male member is movable to and fro between clamping and releasing positions by means of a piston device that separates inner and outer hydraulic medium chambers. A passage extends through the piston device and emerges in the two chambers. A valve is provided in the passage in order to open the passage when the hydraulic pressure in the outer chamber rises to a preset limit value so as to limit the amount of force that clamps the tool.

Abstract: A numerical control system for a machine tool comprises a feed speed setting unit, which outputs a signal of a set feed speed of the machine tool, and a feed speed overriding unit, which outputs a signal of a feed speed overriding according to an input of the feed speed overriding. An interpolation unit connects to the feed speed setting unit and the feed speed overriding unit. The interpolation unit determines a command signal of the feed speed of the machine tool by performing interpolation calculations according to he signal of the set feed speed unit and the signal of the feed speed overriding unit. Based upon its calculations, the interpolation unit outputs a target position of each spindle at each sampling time.

Abstract: The invention relates to a motor-driven hand tool for machining of workpieces, in particular planar workpieces, having a guide surface which can be placed on the workpiece to be treated, and a face milling cutter for processing which projects past the guide surface, and which has an axis of rotation extending perpendicularly to the guide surface.

Abstract: A horizontal machine tool has a spindle head which supports a horizontal tool spindle. The spindle head is guided on a top surface portion of a base such that the spindle head is movable in two horizontal directions X and Z. A workpiece support for supporting a workpiece on its upper end is guided on the vertical front face portion of the base for movement in a vertical direction Y. When the spindle head is located at a machining position at the center in the X direction, a pair of guide portions of each of a front/back guide mechanism for the spindle head and a vertical guide mechanism for the workpiece support body take symmetrical positions with respect to a vertical plane including the axis of the tool spindle. A first index member and a second index member for supporting the workpiece are provided on the workpiece support body. Therefore, all surfaces of the workpiece excepting an attachment surface can be machined while being directed to a tool on the tool spindle.

Abstract: An elongated and cross-section polygonal work piece carrier (1) has at least two clamping surfaces (2) extending parallel to its longitudinal axis (3). It is retained in bearing (5, 9) at least at one end, to be rotatable about its longitudinal axis over 360°. Each of the clamping surfaces (2) is supplied with at least two rotatable work piece holding tables (11) located in a row adjacent each other. The holding tables (11) are coupled by gears (25, 26, 33) with each other and with a common drive gear (35) in such a manner that all tables, in dependence on the rotation of the work piece carrier (1) about its longitudinal axis (3), will rotate over its respective rotation axis (12) about a predetermined angle, depending on the angle of rotation of the work piece carrier; an interrogation device is provided to interrogate whether all rotated tables are in predetermined, locked angular positions.