Abstract: The invention relates to a double-sided drilling fixture for die-forged pistons and a double-sided drilling process thereof. It overcomes the defects of low efficiency and accuracy of the double-sided drilling operation for die-forged pistons in the prior art. The invention comprises a die-forged piston, a fixture base assembly, an upper load-resisting assembly and a lower expansion-resisting assembly. The upper load-resisting assembly is installed on the fixture base assembly and disposed above the die-forged piston. A fixation base, whose upper surface shape is the same as internal surface shape of the die-forged piston, is installed above the fixture base assembly. The die-forged piston is sleeved on the fixation base. The invention achieves simultaneous drilling on both sides of the two rear skirt surfaces of die-forged pistons and delivers quick clamping and automatic fixation, significantly reducing the difficulty in the assembly of drilling plate and workpiece and increasing the alignment accuracy.

Abstract: In the pocket hole apparatus of the present invention, a table reciprocates linearly relative to a base. An anvil is fixed relative to the base and holds the workpiece on a sloped top surface at the desired angle for the pocket hole. A drill spindle with a drill bit is fixed relative to the table. After the workpiece is mounted to the anvil, the table is moved to drill the pocket hole. Optionally, a second spindle on the opposite side of the anvil predrills the pocket hole when the table is first moved to a predrill position. The spindle is enabled or disabled by latching mechanism. The spindle is mounted to a rail that is slidably mounted to the table so that the rail can slide perpendicularly thereby adjusting the spacing between pocket holes.

Abstract: A machine for forming a bottom rail and a valance for a window blind unit. The machine has a support member upon which a length of wood ultimately destined to be a bottom rail or a valance can reside while cutting occurs, and includes at least one laterally movable saw blade for cutting a selectable wood segment at a selectable angle up to 90.degree.. Such angular cutting permits a mitred junction of corners in a formed valance. The machine also has at least one wood boring device and at least one wood drilling device to provide for pull cord anchoring whereby cords are passed through a drilled aperture and knotted such that the knot is housed in a bored compartment. The machine can be incorporated and automated for inline inclusion with automated components of a window blind manufacturing and assembly system to provide finished bottom rails and packaged valance components for final installation at a site of use.

Abstract: A glass plate automatic drilling and milling machine, adapted to provide for holes and/or openings having different size, configuration and positioning, comprises a support structure provided with rotating rollers (23, 24) for the sliding of the plates disposed on vertical or slightly inclined direction thereon, as well as comprising a grasping pliers (25) for grasping each plate and transferring it toward a drilling and milling unit (13) with fixed installation, which in turn is provided with two carriages (15, 16) identical and opposite symmetrically to each other. Each carriage is provided with spindles (29, 30, 31, 32) for supporting drills and milling cutters having different size, of which the spindles of each carriage operate alternatively in opposition to each other. At the end of machinings, the plates in case are passed through a glass-cleaning machine (20) for being cleaned and subsequently packed.

Abstract: An apparatus and method are provided for drilling thin-walled glass articles. The apparatus is comprised of a drilling machine having upper and lower triangulated arm assemblies to which opposing drills are attached. The arm assemblies pivot about a common shaft. The shaft is supported by a support assembly attached to a sliding table. First and second actuators mounted on the support assembly urge the arm assemblies to pivot about the shaft, thereby controlling the feed rate and stroke of the drills. In a second embodiment adapted to drill deep glass articles, the lower arm assembly has an intermediate frame which pivots about an upper shaft along with the upper arm assembly. The lower arm assembly also has a lower arm which pivots about a lower shaft under the urging of a third actuator, allowing the drill spindle attached to the lower arm to enter and withdraw from the deep article without scratching the sides of the article.

Abstract: A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which are attached near the ends of first and second pivotable arms, respectively, the first and second arms being periodically pivoted toward and away from the sheet to bring the drilling devices into and out of drilling engagement with the sheet. The first and second arms are releasably clamped to first and second spindles, respectively, which pivot about first and second axes, respectively, the first and second axes being spaced apart but close to one another and positioned remote from the drilling devices. The position of the first arm is adjustable along its longitudinal axis and the position of the second arm is adjustable along the axis of the second spindle.

Abstract: A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which are attached near the ends of first and second pivotable arms, respectively, the first and second arms being periodically pivoted toward and away from the sheet to bring the drilling devices into and out of drilling engagement with the sheet. The first and second arms are releasably clamped to first and second spindles, respectively, which pivot about first and second axes, respectively, the first and second axes being spaced apart but close to one another and positioned remote from the drilling devices.

Abstract: The invention is directed to a method and apparatus for performing remotemanipulated work on a conduit of a nuclear facility. The method of the invention is for maintaining pipe conduits in a radioactively contaminated cell such as a large-area cell of a reprocessing facility for irradiated nuclear fuel. The defective conduit portion to be removed is sawn out of a conduit and a replacement conduit segment is welded into the conduit. In order to provide for rapidly and accurately welding the replacement conduit segment into the conduit, the step of machining the two conduit end portions is combined with the step of determining the inside dimension between the conduit end portions formed by the step of sawing out the defective conduit portion. An apparatus for carrying out the method of the invention is also disclosed.

Abstract: A machine tool for processing workpieces of various shapes comprises three processing units each mounted on a carriage to move in three axes of coordinates and each being rotatable about a horizontal axis. Each processing unit carries a tool holder having tools and being turnable in two opposite directions. A workpiece is clamped in a workpiece holder so that it is immovable during operation and can be treated at least at three sides thereof simultaneously.

Abstract: The invention relates to a method and an apparatus for the treatment of surfaces of a workpiece of carbon-containing cast iron, and in particular of blind holes in gray iron cast workpieces, by electrochemical stock removal and mechanical reaming-and-plating. Electrochemical stock removal and mechanical reaming and plating are carried out in separate steps whose operating parameters are independently adjustable, the mechanical stock removal being essentially confined to a reaming-and-plating of the surface which does not entail a closing of graphite flakes. A cylinder bore produced by the method of the invention with desired roughness will have a dark, lustrous surface.

Abstract: A cutting and chamfering apparatus for opposite ends of a tubular member including a cutting and chamfering support for holding horizontally the member, two tables provided respectively at opposite ends of the support, and a cutting machine and chamfering machine mounted in combination on each of the tables.

Abstract: A machine for truing both the tire bead seats, and the side surfaces of a web of a wheel. The machine has a work supporting station with radially inwardly movable bead seat deforming jaws, and top and bottom machining heads on slides which move toward and away from the respective sides of the web of a wheel supported by the jaws. The axis of rotation of the machining heads are precisely concentric with the deforming jaws. The bottom machining head is used to chamfer the edges of bolting holes, and the top machining head is used to machine the bolting surfaces of the web. In the preferred embodiment, the bottom slide carries a plurality of gauging switches for contact with the web and for locating its welded position relative to the bead seats. The lower machine head also carries an adjustable gauge post which projects up past the jaws for contact by a gauging switch carried by the slide of the upper head.

Abstract: Successively supplied rod materials with one or more flat surfaces such as tuning pins used for pianos are intermittently and periodically forwarded in axial alignment to each other along a prescribed guide path towards a drilling station with axial postures thereof being regulated through rolling and, when required, sliding contacts with machine parts and, drilled transversely preferably by a pair of drills from two opposite sides with difference in timing and stroke without development of metal refuses and, after the drilling operations, the results in the drilling operation are preferably inspected in mechanical or photoelectrical manner in order to stop the entire machine running when any failure in the drilling operation is detected, all the recited operations being carried out fully automatically.