Abstract: The desktop milling machine with an ovate-shaped bridge is a desktop milling machine of the computer numerical control (CNC) type having a portion of the bridge or frame structure configured to alleviate bridge deflections and deformations that are caused during the high-speed milling processes. Preferably, the bridge has an ovate arch, or has a rear face having an ovate contour.

Abstract: A processing machine for cutting a workpiece with a tool is presented. The processing machine includes a base member configured to support a table for receiving the workpiece, and a tool support means disposed on the base member for rotation between a vertical position and a horizontal position and configured to support the tool, wherein the tool support means is formed from a right leg portion, a left leg portion, and a main portion, such that the main portion connects upper ends of the right leg portion and the left leg portion, wherein the main portion is located above the table when the tool support means is in the vertical position, and wherein a space above the table is not covered by the main portion when the tool support means is in the horizontal position.

Abstract: Disclosed is a 3D reconfigurable machining system including a support frame spaced apart from the ground, a circular pivoting frame pivotably installed at the support frame, a slide member slidably installed on the circumferential portion of the pivoting frame, and a main spindle installed vertically at the slide member and being rotatable along the pivoting frame, so that a workpiece can be three-dimensionally machined with a considerably simple structure.

Abstract: An engraving system operable to engrave user-loaded items is provided. The engraving system may have a housing, an engraver located within the housing, and a carrier configured to receive from a user a cartridge holding then item to be engraved and to position the cartridge relative to the engraver. The carrier may be configured to engrave the item via windows in the cartridge, and to flip the cartridge relative to the engraver for engraving on multiple sides of the item.

Abstract: An improved design and method is disclosed to disassemble a milling machine for transport and to reassemble it when transport is complete. The invention essentially comprises a hinge located at the bottom of the mill column to facilitate the disassembly and subsequent reassembly of the mill column from the mill base. The hinge protects the precise alignment surfaces at the bottom of the mill column and the top of the mill base from damage during both assembly and disassembly. In addition, it guides and stabilizes the column which makes it easier to remove and reattach the mill column to the mill base. By separating the milling machine into two components transportation is made easier and it becomes possible to install a milling in many locations that were previously inaccessible. The simplicity of the method will be advantageous for shops where space constraints make milling machine installation difficult.

Abstract: In a machine tool with at least two axes of movement (2, 7) defining, respectively, the mobility of a first function-supporting unit (1) and of a second function-supporting unit (5), only the first function-supporting unit (1) is provided with its own servo drive, while the second function-supporting unit (5) is driven by the movement of the first function-supporting unit (1) through a coupler unit (13) that can be switched between an engaged and a disengaged state.

Abstract: A machine tool including a base frame, a workpiece table, a machining unit, and a connection portion is disclosed. The base frame has a machining area. The base frame includes two left and right side frames and a connection frame connecting the two side frames. The workpiece table is arranged on the base frame in the machining area. The machining unit is arranged on an upper portion of the base frame and includes a spindle device. A connection portion connects the machining unit and the base frame in a detachable manner.

Abstract: A workpiece table arrangement for a milling and drilling machine comprising a rigid machine tool frame comprising an upper cross girth, a machining unit movable on the front side of the cross girth along at least two coordinate axes by means of a motor and including a rotationally driven work spindle including exchangeable tools. The workpiece table is disposed in front of the machine tool frame and horizontally movable along at least one coordinate axis by means of a motor and comprises a tabletop for clamping at least one workpiece. The machine tool frame comprises two rigid side walls rigidly connected to each other by the upper crossbar and a front end.

Abstract: A power tool includes a motor assembly, a base assembly, and a clamp assembly coupled to the motor assembly or the base assembly to selectively provide a retention force to the other to removably couple the motor assembly and the base assembly. The clamp assembly includes a handle member, a fulcrum member, and a biasing lever member. The lever member includes a first portion and a second portion disposed on opposite sides of the fulcrum member. The handle member is coupled to the first portion, and the handle member is movable between an open and closed position. The handle member rotates the first and second portions of the biasing lever member about the fulcrum member when moving from the open to the closed position, causing the second portion of the lever member to provide the retention force.

Abstract: The subject matter of the present invention relates to a clamping device for clamping a tool or a tool holder (2) in a machine spindle (1), comprising a drawbar (6) that can axially move back and forth between a clamping position and a release position, a clamping spring (18) for actuating the drawbar (6) in the direction of the clamping position, a minimum of one sensor (20) for monitoring the clamping force, and a clamping cone (8) having a plurality of clamping elements (13 [sic; 9]) that rest against its outside surface, which clamping elements, via the axial movement of the clamping cone (8) by means of the drawbar (6), can be moved back and forth between a clamping position in which the tool or tool holder (2) is retained and a release position in which the tool or tool holder (2) is released.

Abstract: An object of the invention is to provide a spindle apparatus which facilitates assembling and removing operations at the time of maintenance and which is low cost. In the invention, the diameter becomes smaller in the order of an inner peripheral diameter of an outer cylinder (3), an inside diameter of a stator (4), and an outside diameter of a bearing sleeve (11); a sub-assembly (2) made up of a front housing (8), a rotating shaft (6), and the bearing sleeve (11) is withdrawable from the outer cylinder (3); and the diameter of a rotating part in an arbitrary section located rearwardly of the bearing sleeve (11) is made smaller than a minimum diameter of a non-rotating part between a rear end of the bearing sleeve (11) and the section.

Abstract: A device for clamping a rod to stop axial and/or rotative movement between the rod and the device. The device includes pressure and clamp units, the clamp unit having a bushing fixed therein and provided with a radially resilient center section normally sized to permit movement of the rod therein. The pressure unit has an actuating piston normally held under fluid pressure in one position but movable under spring pressure toward a second position should the fluid pressure be lost or released. Such movement results in the application of pressure to the bushing to radially deflect its center section inwardly into clamping engagement with the rod to stop its movement. The center section remains clamped on the rod until sufficient fluid pressure is applied to the actuating piston to move it back to its first position thus permitting radial expansion of the center section to release the rod for movement.

Abstract: There is provided a linear guide apparatus which, owing to the use of a gap-free braking device in a rolling guide, has a sufficiently high damping capacity. The linear guide apparatus for guiding a linear motion of a movable body along a guide rail on a fixed structure in a machine tool, includes: a rolling guide section including a rolling element for rolling on a rolling element-rolling surface of the guide rail; and a brake section for enhancing the damping capacity of the rolling guide section, the brake section including a pair of brake shoes, having a flexible structure, for sliding on the rolling element-rolling surface of the guide rail.

Abstract: A clamping device for machine tools is disclosed that is capable of ensuring the clamping force for a tailstock while maintaining a small overall size of the device and a reduced number of parts. The tailstock (movable carriage) movably mounted on a fixed bed is clamped at a specified position to the fixed bed. A stationary rack (stationary fitting member) extending in a direction of movement is fixed to the fixed bed. A movable rack (movable fitting member) is provided on the tailstock so as to be movable in a direction transverse to the direction of movement of the tailstock. Wedge-shaped fitting surfaces are formed at mutually opposing portions of the stationary rack and the movable rack. The movable rack is driven to perform advance-and-retreat motions between a clamping position where the movable rack fits together with the stationary rack and an unclamping position where the clamping state is released.

Abstract: In a numerical-control machine tool use is made of a mandrel-holding structure that makes it possible for the machine tool to be used to smoothing/facing and polishing purposes under utilization of traditional pan-like tools, in which the force acting on the working tool is delivered by a pre-established adjustable pneumatic pressure, while the weight of the moving parts of the mandrel is compensated for by a compression spring. When the pneumatic pressure is substituted for by an oleodynamic, i.e. oil-pressure force acting in the opposite direction, the machine switches over to normal operating conditions as a regular numerical-control machine tool.

Abstract: There is provided a linear guide apparatus which, owing to the use of a gap-free braking device in a rolling guide, has a sufficiently high damping capacity.

Abstract: A machine tool has a table body and a drive line on a bed. The table body is linearly movable via a guide member having a sliding or rolling guide surface. The drive line has a ball screw or the like, and moves the table body along the guide surface. A pair of guide members are provided at positions in point symmetry about the position of the center of gravity of the table body. Moreover, a pair of drive lines having the ball screws or the like are provided at positions in point symmetry about the position of the center of gravity of the table body. Alternatively, drive line having the ball screw or the like is provided at the position of the center of gravity of the table body.

Abstract: A machine tool having at least one motor-driven, movable machine part to which a braking apparatus, a distance measuring device for detecting a distance covered, as well as control device with display unit are allocated. A monitoring device for the brake effect of the braking apparatus is provided. The monitoring device has a memory unit containing stored values (RW, VW and AW) and a comparator. A deterioration of the brake effect is detected by comparing the braking distances detected by the distance-measuring device with the values stored in the memory unit, the display being activated if required.

Abstract: A brake apparatus for a moving apparatus driven by a linear motor, to support a headstock. The brake apparatus includes an air cylinder disposed parallel with a travelling direction, a compressor to supply fluid under pressure to the air cylinder, a 2-port solenoid valve disposed on a fluid path connecting from the compressor to the air cylinder, and a controlling device that outputs a signal to open the 2-port solenoid valve during normal operation of the linear motor and controls the 2-port solenoid valve to close when the power supply to the linear motor is interrupted or the linear motor is stopped in an emergency.

Abstract: A wood planing machine includes a machine base having first and second mounting sides. First and second pairs of posts are fixed on the machine base at the first and second mounting sides, respectively. A cutter carriage is disposed above the machine base, and has opposite end portions mounted respectively, vertically and movably on the posts. A cutter unit has first and second shaft portions journalled to the first and second end portions of the cutter carriage. The second shaft portion is formed with a first engagement section. A cutter locking device includes a locking plate mounted movably on the second end portion of the cutter carriage, and having a vertical plate portion disposed adjacent to the second shaft portion, and a horizontal plate portion disposed below the second shaft portion and formed with a second engagement section.

Abstract: A mounting fixture for a reconfigurable assembly machine having a plurality of modules with slots formed in their upper surfaces includes a square or rectangular solid block having a plurality of threaded openings. The openings receive fasteners adapted to secure various and diverse assembly machine components and devices to the mounting fixture. One surface of the block includes a channel or keyway having a width equal to the width of the throat of the slots formed in the upper surface of the assembly machine module. A locating key is received in the keyway in the block and the throat of the T-slot. The locating key includes through openings which receive threaded fasteners having heads held captive and the T-slot which, with suitable nuts, secure the block to the upper surface of the module.

Abstract: An apparatus for forming selected machining functions relative to a workpiece comprising a machine carriage having one or more machining spindles and a work table assembly having a pair of work tables, a shuttle assembly selectively moveable along the table movement axis and a connect/disconnect mechanism associated with each of the work tables for selectively aligning and connecting and disconnecting the work tables relative to the shuttle. The present invention also relates to a work table assembly for use with a machining apparatus.

Abstract: A machine tool is provided with a spindle clamping device for clamping a spindle assembly supported by a spindle head and composed of an outer spindle rotatably supported by the spindle head and an inner spindle disposed inside the outer spindle to be reciprocal along an axial direction thereof. The inner spindle is inserted into an inner hollow portion of the outer spindle so that a space is formed between an inner peripheral surface of the outer spindle and an outer peripheral surface of the inner spindle. The spindle clamping device comprises a pressure applying member such as a pair of pistons or oil ring disposed in the space between the outer and inner spindles for applying a pressure in an axial direction of the outer and inner spindles. The pressure applying member is provided with an oil chamber, and a pair of clamp rings are disposed in the space axially outside the pressure applying member.

Abstract: An adjustable support fixture and method for using same with a cutting assembly for milling or grinding a flat surface on a workpiece, the fixture including a suspended platen on which the workpiece is mounted, removable apparatus for establishing the cutting plane, devices for positioning the flat surface of the workpiece against the plane-establishing apparatus, and a mechanism for retaining the workpiece in this position as the plane-establishing apparatus is removed and the cutting operation is performed.

Abstract: A plate working machine comprising a metal plate supporting table (1), a pair of rails (2, 3) extending along the sides of the table (1), a driven support means (4) for travel along the rails (2, 3), said support means comprising a spaced pair of support beams (5, 6) extending from one rail (2) to the other (3) and joined at either end by cross members (7, 8). A drilling assembly (9) is mounted on tracks (10, 11) mounted on the beams (5, 6) and a plasma profiling head (12) is carried by the drilling assembly (9) and extends over the beam (6) and downwardly towards a position adjacent the table (1).

Abstract: A machine tool for machining a workpiece (11), the workpiece (11) being fastened to a support (9) which has its bearings in a frame (1) of the machine tool and is rotatable about an axis of rotation (13), while a tool (37) is movable relative to the workpiece (11) by means of a positioning device (35) provided on a carrier (17) of the machine tool. The carrier (17) is movably guided relative to the support (9) along a straight guide (23, 25) of the frame (1) in a direction parallel to the axis of rotation (13) by means of static fluid bearings (19, 21), so that a space easily accessible to an operator is created between the carrier (17) and the support (9) through displacement of the carrier (17). The carrier (17) can be coupled to the frame (1) by means of coupling members (51) provided with bolts (75), a head of each bolt (75 ) forming a piston (73) which can be moved in a cylinder (59), which is hinged to the carrier (17).

Abstract: A machine tool comprises two motion units, in particular a spindle stock and a machine bed, arranged for being displaced relative to each other along one axis. A guideway is fixed to a first motion unit for guiding the displaceable motion unit, a first surface of the guideway being in contact with, and screwed to a second surface of the first motion unit. In order to prevent the guideways from being dislodged in a direction perpendicular to the longitudinal axis of the machine screws, for example when the spindle stock runs up against a stationary obstacle due to improper operation, at least one of the said surface is roughened.

Abstract: A machining system for performing heavy duty milling and other repair operations under water is disclosed herein which is particularly useful in performing repair and maintenance operations in the core barrels of nuclear reactors. The machining system generally comprises a platform, a machining device which is detachably connectable to the platform which includes a drive motor and cutter necessary to effect the repair or maintenance operation, and a triaxial adjustment mechanism which permits the machine cutter to be precisely positioned at any desired location within the core barrel. The platform has a guide mechanism which includes both a rough and a fine guide means which precisely positions the machining device with respect to the platform when it is lowered thereon. A hydraulically operated lock remotely and detachably secures the machining device into position on the platform after the guide mechanism has properly positioned it.

Abstract: The body (2) of the tool-holder (1) is equipped with spherical caps (14, 15, 16) which come to rest against the flat inside faces (6, 7, 8) of a trirectangular trihedron in the tool-mounting base. Flanges (17, 18) guide conical-tipped retaining pins (21, 22) in apertures (20, 21). These tips fit into conical recesses (23, 24). The rod (13) of a jack mounted on the base spreads the pins apart, and while entering the recesses, the pins exert on the tool-holder a force capable of immobilizing it and acting along a predetermined line of action.

Abstract: A method and arrangement for enhancing the ability of robots to perform precision assembly and machining employing adaptive clamping surfaces attached to the robot end effector in locations providing high mechanical advantage against working forces, and adaptive clamping foundations that become immobilized at the desired work location to form a local work foundation.

Abstract: A surfacing and boring machine for reconditioning engine blocks has a front stationary work table, a traveling column on rails provided by an elongated rigid base, a power head unit on the column adjustable in an air float condition to move an overhanging spindle forwardly and rearwardly, and mechanisms in the power head unit to independently move a spindle carrier vertically and to rotate the spindle at selected speeds. Clamping devides are provided to independently clamp the power head unit to the traveling column and the column to the base rails. A quick-change unit is located in the spindle for the tools.

Abstract: The work supporting unit or units on the stationary or reciprocable work supporting table of a plain grinding machine are adjustable with reference to the table by one of the existing numerically controlled drives, such as the drive which reciprocates the table with reference to a stationary base or the drive which reciprocates a carriage for the grinding wheel relative to a stationary table. The locking device or devices which normally fix the adjustable unit or units to the table are disengaged and the unit or units are separably coupled to the reciprocable part (table or carriage) by suitable detents which can be engaged or disengaged by numerically controlled drives or by an existing drive such as the drive for a slide which is reciprocably mounted on the reciprocable carriage and supports the grinding wheel.

Abstract: A cutter for a welding apparatus for cutting a welding workpiece upon welding. In order to facilitate the positioning of the cutter during the movement of the cutter for the cutting operation and to make the entire apparatus small-sized, a shear frame is formed with substantially the shaped of a C, and the opposing portions of the C-shaped shear frame are connected by a connecting rod, enabling the reaction force during the cutting operation to be resisted by the shear frame itself.

Abstract: A horizontal drilling and milling machine having a spindle head which is rotatable about an axis set at 45.degree. relative to the horizontal. In the horizontal and vertical working positions of the spindle sleeve, the spindle head can be arrested via a support housing. In its horizontal working position, the spindle sleeve is rotatably driven exclusively by a spur gear system, and in its vertical working position is rotatably driven with the aid of a bevel gear system.

Abstract: A horizontal drilling and milling machine having a spindle head which can be rotated about an axis set at 45.degree. to a horizontal plane. The spindle head can be arrested in the horizontal and vertical working positions of the spindle sleeve by means of a support housing. The spindle sleeve can be driven via a gear system. The rotary movement of the spindle head is derived from the drive shaft for the spindle sleeve.

Abstract: A table, movably carried upon a stationary base, is provided with a fixed jaw and a movable jaw for gripping the lateral edges of a door or similar panel-like workpiece. The table is movable in reciprocal directions against adjustably positionable stops to place a longitudinal edge of the door at predetermined locations relative the cutting path of a router. The router is mounted upon a carriage which is horizontally and vertically movably supported upon a frame upstanding from the base.

Abstract: A spindle lock-up device for detachably locking a rotary spindle having a tool holder at its end to a non-rotatable support, such as the ram of a vertical boring machine, so that the spindle tool holder also may be used as a fixed tool holder for the ram, the device having a first spiroid gear member fixed to the ram, a second spiroid gear member surrounded by the first gear member and fixed to the spindle, and a third spiroid gear member surrounding said spindle and mounted for axial movement from a retracted to an extended position, the third gear member simultaneously engaging the first and second gear members when in the extended position to lock the spindle against rotation relative to the ram, the third gear member being moved to the extended position by a displaceable piston.

Abstract: A device for clamping boring bar in a horizontal boring and milling machine comprises a resilient clamping ring interposed between a milling spindle and the boring bar, and an accumulator secured to the milling spindle for supplying pressurized oil to the clamping ring. An oil supply unit is provided for controlling oil supplied into the accumulator when the milling spindle is stopped at a predetermined angular position relative to a stationary part of the machine.

Abstract: A building set is provided including at least a drive motor, a spindle stock and a support element for holding these elements. These elements can be assembled to form a variety of small machine tools. The elements are formed as independent parts with under cut clamping grooves. The elements are joined together at their clamping grooves by a connecting element.

Abstract: An automatic numerically controlled machine tool or "bed machining center" presents a tool carrying spindle rotating in a vertically movable head sliding on a forwardly and rearwardly movable column, for cutting tool engagement with a workpiece clamped on a laterally movable table. The head, the column and the table are slidingly movable by precision ball screws on mutually perpendicular way members, accurately positioned with pivoting fine adjustment. Sliding ramp gib pack cam block pairs further adjust the sliding members for maximum precision. Replacement spindle and vertical ball screw assemblies are easily substituted for rapid maintenance. High volume coolant circulation flushes chips away from the workpiece. A concealed tool change carriage glides forward from an enclosure, receives the previous tool from the spindle, indexes the next tool, releases it for automatic loading in the spindle collet, and retracts into its enclosure.

Abstract: A pallet receiver for a machine tool is disclosed utilizing a pin and socket for registration and alignment. A pallet clamp piston is employed to clamp the pallet to the receiver base for subsequent machining operations. A registration pin is rigidly secured to the receiver base, and a cooperating pin socket is mounted to the pallet underface by means of a compliant diaphragm spring so that as the socket and pin are engaged during the first portion of clamp piston movement the pallet will be registered and aligned with respect to the receiver base, and during the second and final portion of piston movement the axially compliant pin socket will permit the pallet to engage a rigid clamp down surface on the receiver base, thus insuring a positive final resting position for the pallet on the receiver base.

Abstract: The present crankshaft milling machine comprises at least one milling unit which may be controlled in its feed advance drive by a copying mechanism operating in synchronism with the rotation of the work piece. The copying mechanism is movable back and forth along a guide extending in parallel to the longitudinal axis of the work piece along a guide. The guide for the copying mechanism defines a plane which extends substantially vertically on one side of the work piece or crankshaft and in parallel to the crankshaft axis. Each milling unit is tiltably supported on a tilting axis located below the work piece axis and extending in parallel to the work piece axis. The feed advance drive is arranged on the side of the tilting axis facing away from the work piece. The feed advance drive reaches over the work piece, whereby a closed force flow around the work piece is established and the milling forces need not be introduced into the machine bed.

Abstract: A tightening and clamping mechanism for the mandrel collar of a milling or boring spindle. The clamping elements are semi-circular devices with notches in their outer surfaces. By engaging the notches with retainer pins and tightening actuators, the clamping elements may be closed around the mandrel collar thereby securing it to the spindle housing.

Abstract: The machine of the present invention is an internal milling machine designed to mill the crank pins and crank arm cheeks of heavy crankshafts to precise dimensions. Positively locked clamping systems are employed to rigidly fix the headstock at indexed positions on the machine ways and to rotatively lock the chuck at rotatively indexed positions. Both clamping systems are capable of shifting the headstock and headstock chuck to a final precisely located indexed position as the locking members are moved into their locking relationship.