Abstract: There is provided a vertical lathe which, when machining gradually varying lens grooves in a mold for molding of a Fresnel lens, can change the angle of a cutting tool without positional displacement of the cutting tip, enabling high accuracy machining of the gradually varying lens grooves. The vertical lathe includes: a column; a rotary table for rotating a workpiece; a cantilevered cross rail supported by the column; a saddle movable in a horizontal direction along a guideway of the cross rail; a ram suspended from the saddle and movable vertically along a guideway of the saddle; and an inclined head mounted to the lower end of the ram and having an inclined swivel shaft for holding a cutting tool, wherein said swivel shaft is configured to swivel the cutting tool around a nose of the cutting tool as the center of swiveling.

Abstract: A machine for carrying out mechanical workings preferably by showing removal includes a frame arranged for receiving a semi-worked piece having a cross section exhibiting dimensions remarkably smaller than the length of the piece measured along its own longitudinal axis. The semi-worked piece is arranged with the longitudinal axis along a working axis in a working station. A clamp is arranged at a number of cross sections of the semi-worked piece for locking the semi-worked piece in the working station. A tool is arranged for carrying out workings on faces of the semi-worked piece. A support to which the semi-worked piece is fixed by the clamp is suitable to be rotated about a service axis.

Abstract: An apparatus and method of utilization thereof is provided for machining pistons of reciprocating piston internal combustion engines. The piston is held in a work station by its interior cavity and the oil rings, oval side surface and hinge pin bore are machined on the piston without any refixturing of the piston required.

Abstract: A rotary indexing machine has a fixed machine frame, which is designed for holding a multiplicity of machining units and includes at least one support. The rotary indexing machine has a rotary table rotatable relative to the machine frame about a vertical indexing axis to be arranged on the rotary table The support is designed for the lateral attachment of at least one of the machining units to create free space for machining. The machine frame has high rigidity and stability, a large free space for machining workpieces being created at the same time in the region of the rotary table, and good accessibility of satellites. The indexing devices and the rotary table ensure adjustment or setting-up of the machine.

Abstract: A machine tool in which a plurality of machining positions is orbited by a work spindle unit carrying a workpiece and capable of radial displacement relative to the central axis of rotation. The work spindle unit may be one of one or more such units mounted upon a bridge element angularly displaceable about that axis.

Abstract: A lathe (10) includes a support structure (12) which supports a magazine (14) in a substantially vertical operative orientation. The magazine (14) is rotatably supported in a carriage (24). The magazine (14) is a multi-spindle magazine and supports a plurality of workpieces. A workstation head (40) is mounted on the housing (18). The workstation head defines a plurality of workstations (46). Each workstation head includes a plurality of working tools.

Abstract: In order to use moved masses which are as small as possible in a machine tool, in particular for the rotary machining of workpieces, comprising a machine frame, a tool carrier, a workpiece carrier, it is proposed to provide a parallel kinematic arrangement, which has three parallelogram guides connected in an articulated manner at one end to a receiving means for one of the carriers and at the other end to a slide and an N/C-controlled linear drive for each slide and by which the carrier arranged on the receiving means is movable relative to the machine frame in a three-dimensional movement space.

Abstract: In order to so improve a lathe comprising a machine frame, a first workpiece spindle with a vertical first spindle axis and a first workpiece holder, a first carriage system for moving the first workpiece spindle, a second workpiece spindle with a vertical second spindle axis, and a second workpiece holder facing the first workpiece holder, a second carriage system for moving the second workpiece spindle, the first workpiece spindle and the second workpiece spindle being adapted to be brought into a transfer position, that the machine frame can be manufactured in as simple and cost-efficient a manner as possible, it is proposed that the machine frame comprise a first machine bed and a second machine bed constituting an assembly separate from the first machine bed, and that the first carriage system be guided solely on the first machine bed, and the second carriage system be guided solely on the second machine bed.

Abstract: A lathe (10) includes a support structure (12) which supports a magazine (14) in a substantially vertical operative orientation. The magazine (14) is rotatably supported on a carriage (24). The magazine (14) is a multi-spindle magazine and supports a plurality of workpieces. A workstation head (40) is mounted on the housing (18). The workstation head defines a plurality of workstations (46). Each workstation head includes a plurality of working tools.

Abstract: The invention provides an apparatus for exchanging workpieces which reduces the time required for exchanging workpieces by cutting down to a minimum the moving distance and the waiting time of a workpiece transport means. By the movement of a headstock 1, a chuck 2 transports a finished workpiece WA and an unfinished workpiece WB between a machining section near a tool rest 3 and a conveyer 4. The conveyer 4 conveys the finished workpiece WA from a workpiece exchanging position 4a and conveys the unfinished workpiece WB into the workpiece exchanging position 4a. A shift cylinder 11 transfers the unfinished workpiece WS from the conveyer 4 to a waiting station 6. An elevating plate 7 and a slider 9 transfer the finished workpiece WA from the chuck 2 to the conveyer 4. A lift cylinder 13 transfers the unfinished workpiece WB from the waiting station 6 to the chuck 2.

Abstract: A multi-height cutting apparatus includes a fixed cutting tool means disposed around a central axis, the fixed cutting tool means having at least one cutting edge, and a plurality of rotary cutting tool means spaced between the column and the fixed cutting tool means and respectively rotated to cut can bodies being delivered one after another through a circular path between the at least one cutting edge of the fixed cutting tool means and the rotary cutting tool means, the at least one cutting edge of the fixed cutting tool means each having a stepped cutting structure, the rotary cutting tool means each having a cutting edge in a stepped structure thereof corresponding to the at least one cutting edge of the fixed cutting tool means for cutting each delivered can body at different heights.

Abstract: A multi-height cutting apparatus includes a fixed cutting tool means disposed around a central axis, the fixed cutting tool means having at least one cutting edge, and a plurality of rotary cutting tool means spaced between the column and the fixed cutting tool means and respectively rotated to cut can bodies being delivered one after another through a circular path between the at least one cutting edge of the fixed cutting tool means and the rotary cutting tool means, the at least one cutting edge of the fixed cutting tool means each having a stepped cutting structure, the rotary cutting tool means each having a cutting edge in a stepped structure thereof corresponding to the at least one cutting edge of the fixed cutting tool means for cutting each delivered can body at different heights.

Abstract: In a vertical lathe of an open side column type, a pair of linear guides (65,66) arranged in parallel in a cross rail (62), and a space portion (67) is formed between them (65,66). A saddle (90) is supported by the linear guides (65, 66) above the space portion (67) and moved in an axis direction (X axis). A ram (120) is suspended through the space portion (67) and moved in a vertical direction (X axis). A rotary driving disc (34) fixed on the table rotation driving shalt (33) is connected to a rotary table (30) by plural torque transmission pins (37) in torque transmission relationship. Thereby, the rotary table (30) rotates in carrier method. A tool holder (151) is rotatably driven at an optional angle position (B axis position) by a B axis servomotor (163) about a horizontal axis. The tool holder (151) is clamped at an optional rotation angle position by a thrust static pressure bearing under oil-pressure supply to one of thrust static pressure portions.

Abstract: A metal bonded drilling and boring tool which can prevent the separation of abrasive grains during drilling and boring to maintain a stable working performance for a long period of time without the need for tool exchange. The tool includes a rod-shaped body having a substantially semispherical front end portion and numerous abrasive grains bonded to an outer circumferential surface of the rod-shaped body at the front end portion and at a portion having a given length from the front end portion by a bond member formed primarily of copper alloy. The bond member contains a material selected from the group consisting of Ti, Al, and a mixture thereof. The copper alloy is selected from the group consisting of bronze containing 10 to 33 wt % of Sn, brass containing 5 to 20 wt % of Zn, and aluminum bronze containing 5 to 20 wt % of Al.

Abstract: A milling machine includes a bi-directional, variable speed, rotary workpiece-holding table, a table drive sized to achieve relatively high acceleration and deceleration rates, a cutting tool mounted to a single or dual axis head, and a control system adapted to achieve a high degree of tool position and table rotational position accuracy cooperating to permit high-speed machining operations, including substantially dome-shaped parts characterized by circumferential surface portions interrupted by radial wall portions. A dual table drive and interchangeable head arrangement make the machine also suitable for conventional turret lathe operations.

Abstract: A machine tool is provided where the support rigidity of the saddle is improved without increasing the height of the headstock. The machine tool includes a headstock situated on a fixed bed and a saddle having two different heights disposed on the fixed bed so as to be movable along a direction of an axis line of the headstock. A tool post is present on a column placed on the saddle so that the tool post is movable in a direction perpendicular to the axis line of the headstock. In this machine tool, the height of one portion of the saddle located toward the rear side of the tool is larger than the height of another portion of the saddle located toward the front side of the tool.

Abstract: In order to improve a machine tool comprising a machine frame, at least one workpiece receiving means which can be rotated about an axis and fixed in a defined rotary position, a tool carrier arrangement, with a rotatingly driven tool which can be moved by means of a control and aligned such that the tool spindle axis is located in planes intersecting the axis and forming with this axis an angle in the range of approximately 0° to approximately 90°, in such a manner that the distances to be traveled can be reduced it is suggested that the tool carrier arrangement comprise a tool spindle carrier which can be pivoted about a pivot axis in relation to a bearing housing, can be fixed on the bearing housing in at least one machining position and extends only on one side of the pivot axis in an angular range of less than 180° around the pivot axis and away from it and that the tool spindle be arranged on the tool spindle carrier such that its tool spindle axis is in a position non-coaxial to the pivot a

Abstract: The invention relates to a multi-spindle machine tool, in particular a multi-spindle automatic lathe with several workpiece spindle units. These are arranged around a central axis, can be driven rotationally and can be advanced from one machining position to the next. In order to provide the greatest possible flexibility in the machining of workpieces in a machine of this type, the invention envisages that the workpiece spindle units can be moved independently of one another along a movement path running around the central axis. The machining positions are designed in the form of machining segments within whose limits the respective workpiece spindles or workpiece spindle units can move along the movement path during a machining process.

Abstract: The present invention discloses a roll cutter. The roll cutter has a housing. To the housing, there is attached a base, a cutter assembly, and an optional hoist assembly. The hoist assembly is a telescoping tower that allows the user to engage a roll using a hoist. The hoist can then pick up the roll and move it onto the stand. Once on the stand, the cutting assembly having a cutting tower, a cutting arm, and a saw can be placed at the desired level of cut. A saw can then be used to cut away the roll until it is the desired width. A sanding blade can be used to sand the edge of the roll.

Abstract: A spoked wheel rim having a hub defining an axis, a plurality of spokes projecting radially from the hub, and a rim ring attached to outer ends of the spokes is machined by first mounting it in a loading/unloading station into a holder rotatable about a holder axis with the rim axis generally coaxial with the holder axis. Then the holder is orbited by a turntable carrying the holder from the loading/unloading station into a working station angularly offset relative to the loading/unloading station about a turntable axis between the stations. A rotating tool is then displaced by means of a head carried on a hexapod positioner at least over surfaces of the spokes while holding the rim stationary in the working station to machine the surfaces. The rim is then continuously rotated about the holder axis in the working station while engaging a rotating tool carried on the hexapod positioner with an edge of the rim ring to machine the edge.

Abstract: A lathe each or lathes of a machining system comprises a head stock, which is transferred on a rail mechanism. The rail mechanism includes a vertically guiding rail which is mounted on a horizontally guiding rail. A turret has a turret support which has a pair of turret support attaching surfaces. The turret is attached with either of turret support attaching surfaces. A extruded horizontally guiding rail is located between both the bed bodies, each of which is included in each of the lathes. The extruded horizontally guiding rail is identical with a connecting guiding rail which connects the one horizontally guiding rail of the one lathe with the other horizontally guiding rail of the other lathe. A work stocking means is located between the bed bodies. A reversing means for reversing works is provided with the head stock.

Abstract: A machine tool, such a lathe, is described that includes a machine base and four base columns supporting a horizontal roof-shaped upper section. Horizontally guided Y-carriages and Z-carriages are suspended from an underside of the upper section. A horizontal working spindle is suspended from the Z-carriages. An X-carriage is arranged and vertically guided on the lower section of the machine stand.

Abstract: In order to improve a machine tool comprising a machine frame, a drum arranged for rotation about a drum axis within a maximum angular range in relation to the machine frame and having a plurality of machining devices held on it and drives rotatable with the drum and associated with the machining devices, a stationary control and supply device for the drives and a rotary supply unit which has line systems connected, on the one hand, to the rotatable drum as well as, on the other hand, held so as to be stationary in relation to the machine frame, these line systems being free from interruptions, deformable as a result of rotation of the drum and extending in the direction of the drum axis, in such a manner that the spatial requirements for the twistable line systems in the direction of the drum axis are as small as possible it is suggested that the line systems extend into a passage in the drum close to the drum axis.

Abstract: In order to improve a machine tool comprising a machine frame with an underframe and a machine column seated on this and having a support ring, a support mounted on the support ring for rotation about an essentially vertical axis, several workpiece receiving chucks for workpieces to be machined arranged on the support, an operating area extending around the vertical axis, and a plurality of stations arranged on the machine frame in the region of the operating area, the workpiece receiving chucks being positionable in these stations during a machining cycle, such that the machine frame has as great a rigidity as possible with as expedient a construction as possible it is suggested that the machine column have a reinforcement casing fixing the support ring in relation to the underframe, this casing extending outside the operating area and surrounding it at least partially, that the reinforcement casing comprise casing supporting structure elements which are located in a casing surface extending around the verti

Abstract: An apparatus for machining both inside and outside of a hollow workpiece (16) to impart thereto inner and outer curved surfaces that are contoured to be non-circular is disclosed. It includes workpiece supports (10, 11) that clamp the workpiece oriented substantially vertically from its opposite upper and lower sides to support it rotatably about its axis extending substantially vertically. A C-axis drive (18) acts on the workpiece supports to rotate the workpiece about that workpiece axis. The workpiece supports are driven by a Z-axis drive to move the workpiece in a direction of that workpiece axis. Also included are an exterior machining unit (24) having a cutting tool (26) arranged to be movable in a direction of X-axis that is orthogonal to the workpiece axis, and an interior machining unit (25) having a cutting tool (33) arranged to be movable in a direction of U-axis that is parallel to the X-axis.

Abstract: A lathe or each of lathes of a machining system comprises a head stock, which is transferred on a rail mechanism. The rail mechanism includes a vertically guiding rail which is mounted on a horizontally guiding rail. A turret has a turret support which has a pair of turret support attaching surfaces. The turret is attached with either of turret support attaching surfaces. A extruded horizontally guiding rail is located between both the bed bodies, each of which is included in each of the lathes. The extruded horizontally guiding rail is identical with a connecting guiding rail which connects the one horizontally guiding rail of the one lathe with the other horizontally guiding rail of the other lathe. A work stocking means is located between the bed bodies. A reversing means for reversing works is provided with the head stock.

Abstract: The present invention discloses a roll cutter. The roll cutter has a housing. To the housing, there is attached a base, a cutter assembly, and an optional hoist assembly. The hoist assembly is a telescoping tower that allows the user to engage a roll using a hoist. The hoist can then pick up the roll and move it onto the stand. Once on the stand, the cutting assembly having a cutting tower, a cutting arm, and a saw can be placed at the desired level of cut. A saw can then be used to cut away the roll until it is the desired width. A sanding blade can be used to sand the edge of the roll.

Abstract: A turretless turning machine dedicated to the manufacture of a limited number of parts includes a base, a spindle assembly for holding and turning a workpiece, a motor, a direct drive assembly for transferring power from the motor to the spindle assembly, and a cutting assembly, the base being of sufficient mass and area to provide a damping force that facilitates reducing vibrations and harmonics generated by the machine, the motor and direct drive assembly being adapted to rotate the spindle assembly about a vertical axis at a rate wherein chip fragments aviate off of a workpiece being machined such that heat generated by the tooling process is removed by the chips which have absorbed the heat.

Abstract: A support structure for laterally supporting a workpiece in a vertical lathe so as to hold the axis of the workpiece aligned with the vertical support axis of the lathe. The support structure includes a rod which is vertically supported on the lathe. The rod supports a movable locator rest assembly. The locator rest assembly includes a horizontally extending rod which terminates in a part rest which can be positioned so as to engage and support the workpiece in a precisely vertical manner.

Abstract: A cylinder rounding/holding tool that is positioned in the center of the rotary table and bolted to a base plate for rigidity. The tool is formed from a metal frame that is circular on the inside diameter to form a locating boss and has flats on the exterior corresponding to the number of shoes required for the application. At each flat is a shoe that has two mechanical jacks (one at each end of the shoe) and a center guide tube. The jacks are powered by DC electric stepper motors that allow precise radial displacement of the shoes. The center guide tubes provide circumferential and axial load carrying capability and stability for the tool. The shoes are replaceable to allow machining to match the inner diameter of the cylinder being rounded. A computer controller may be used to control the stepper motors and a linear variable displacement transducer may be used for input to the computer controller and a real time feedback loop for roundness condition of the cylinder.

Abstract: A vertical boring machine is for boring or facing a circular region of a component having a central axis and includes a horizontal support for supporting the component with the central axis extending in a vertical direction. A tool support is disposed for rotation at the central axis to extend in said vertical direction. The tool support includes a tool head extending radially outwardly of the central axis which is configured for controlled radial movement and for controlled axial movement. The vertical boring machine preferably includes a mechanism for selectively moving the base of the tool support in an X direction and in a Y direction relative to the horizontal support aligning the tool support with the central axis. The X direction and Y direction are in a horizontal plane and perpendicular to each other.

Abstract: Manipulators (M1, M2) capable of gripping a workpiece to be machined are mounted on the tool-carrying slide or slides or on the so-called cross slide or slides (S) of a vertical lathe. The manipulators are preferably located outside the tool stations. The travel movements of the slide or slides are adapted so that, after machining of the workpiece located on the chuck (G) has been completed, a manipulator (M2) is positioned on the chuck in order to take hold of and extract the workpiece, while the other manipulator (M1) is positioned, simultaneously, in a loading station (S1) in order to take hold of and raise a new workpiece to be machined. With successive displacements of the slide or slides, the manipulator (M2) with the machined workpiece is positioned in a station (S2) for receiving and removing the workpiece itself, while the other manipulator (M1) is simultaneously positioned on the chuck (G) in order to insert the new workpiece in the latter.

Abstract: A workpiece machining system for simultaneously machining the opposite surfaces of workpieces such as discs for disc brakes includes at least two machining apparatus disposed on a workpiece transfer path between a first workpiece inlet conveyor line and a second workpiece outlet conveyor line, for machining respective workpieces while holding and rotating the workpieces in the same attitude as that in which they are conveyed along the first and second conveyor lines. The workpiece machining system also includes a transfer apparatus for transferring the workpieces from the first conveyor line through the machining apparatus to the second conveyor line while maintaining the workpieces in the same attitude.

Abstract: A machine tool (100) has a spindle (101) and a turret or toolholder (124) which are disposed at the front of a base (134).A workpiece (W) is rotated by the spindle (101). The turret (124) is movable toward and away from the workpiece (W) along a path which has vertical and horizontal components. A conveyor assembly (200) is operable to move workpieces between the rear of the base (134) and the spindle (101) along a path (A) which extends through a plane (E) which contains the axis (C) of rotation of the spindle. The plane (E) is parallel to vertical and horizontal components of movement of the turret (123). An alternative embodiment (100a) of the machine tool includes a pair of spindles (101a, 301) and a pair of turrets (124a, 324) disposed at the front of a base (134a, 334). Workpieces (W9, W10) are moved two at a time between the rear of the base (134a, 334 ) and the two spindles (101a, 301) along a path which extends through a plane which contains the axes (C, J) of rotation of the spindles (101a, 301).

Abstract: For centering of optic lenses in a mechanical mounting, in particular during edge cutting and bevelling, the invention includes a device with a housing (10), which is resistant to twisting and which supports centering spindles (18, 18') with clamping cups (20, 20') thereon, between which clamping cups a lens (L) can be aligned and clamped for a cutting operation. A motor drive (M, R) acts on a torque divider (50) having a guide member (52) between axially and radially supported plates (58, 58'). Their frictional connection through a ring of balls (54) with controllable contact pressure, which is introduced through a pressure piece (62), assures an absolute synchronous running of the split drive shaft (14, 14') which acts on the centering spindles (18, 18') through belt drives (46, 46').

Abstract: Apparatus is described for machining the exterior peripheral surface of piston rings for internal combustion engines, particularly piston rings having a transverse shape other than circular, for example, oval or elliptical. A jig arrangement usable with the apparatus is adapted to temporarily deform the workpieces in order to produce exterior surfaces having a conical taper.

Abstract: An apparatus for use in machining a workpiece includes a housing (102) which is operable between a closed condition enclosing a chuck (101) and an open condition. When the housing (102) is in the open condition, an opening (117) extends across the top of the housing and down opposite sides of the housing to provide access to the chuck (101) from both sides of the housing. A workpiece transfer assembly (200) has a downwardly extending structure (204) which is movable along a path (A) extending through the housing (102) when the housing is in the open condition. This enables the transfer structure (200) to move unfinished workpieces (W) to the chuck (101) from one side of the housing and to move finished workpieces from the chuck to the opposite side of the housing. The transfer structure is supported on tracks (201) which extend above the housing.