Abstract: A locking system for securing tools on an arbor. The locking system has a collar attached to the arbor, with the collar spaced from the tooling. A nut is placed over the collar and positioned next to the tools. The nut is then rotated to secure the nut between the collar and the tools.

Abstract: An actuator for moving a tool is disclosed, comprising a housing in which a tappet carrying a tool holder is guided axially movable, wherein the tappet is movable by means of a fast drive, e.g. by a piezo drive or by a nanotube drive, which is biased against a restoring force and which is dampened by a dampening element. Herein the fast drive may at least partially be received within a recess of the tappet which leads to a very compact design, in particular in combination with a coaxial dampening element. For guiding the tappet in axial direction alternatively a roller guide may be used (FIG. 3).

Abstract: The present invention generally relates to the field of woodworking tools and particularly to an indexing assembly for a lathe. An aspect of the present invention is directed to a lathe, including a frame; a bed coupled with the frame; a head stock configured for mechanically engaging a first end of a workpiece, the head stock being coupled with the bed; and a tail stock, including a housing, the housing including a fine adjustment assembly for mechanically engaging with a second end of the workpiece, wherein the tail stock is adjustably and slidably coupled with the bed via an indexing assembly, the indexing assembly configured to provide the lathe with positive locking capabilities.

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: An assembly for fastening and locating an added head of a numerical machine tool comprises two cylinder mounts located in the periphery of a main shaft of the numerical machine tool. A piston is movably disposed between the two cylinder mounts such that the piston is driven by the hydraulic-pneumatic loops to move up and down so as to control the movement of an engagement block for retaining a retaining block of the added head. The main shaft of the numerical machine tool is provided with a crank-tooth coupler to facilitate the adjusting of the angular position of the added head in accordance with the operational requirement for processing a workpiece.

Abstract: A toolholder apparatus is provided for holding a cutting tool adjacent a rotating workpiece. The apparatus includes a mounting block base and a mounting block body slidably supported on the base. A first adjustable connector connects the body to the base so that apposition of the body on the base can be adjusted in a first direction toward the workpiece. A center adjustment block slidably engages the body. A second adjustable connector connects the center adjustment block and the body so that a position of the center adjustment block on the body can be adjusted in a second direction transverse to the first direction and transverse to the rotational axis of the workpiece. A head is detachably mounted on the center. adjustment block. The head is removable from the center adjustment block by. sliding movement in a third direction transverse to both of the first and second directions.

Abstract: The invention provides a clamping device for machine tools capable of preventing the occurrence of impressions. In a clamping device for machine tools, a tailstock (movable carriage) is provided on a top face of a fixed bed and the tailstock is positioned and fixed with respect to the fixed bed. The tailstock is supported by linear-motion bearings (guides) which are disposed between the tailstock and the fixed bed. Blocks are slidably engaged with rails extending in the travel direction with rollers interposed between them. Further, a recess portion extending in the travel direction is formed in the top surface of the fixed bed. A cylinder mechanism is arranged so that left and right inner walls in the recess portion are pressed by a pair of pistons provided on the undersurface of a headstock.

Abstract: A toolholder apparatus is provided for holding a cutting tool adjacent a rotating workpiece. The apparatus includes a mounting block base and a mounting block body slidably supported on the base. A first adjustable connector connects the body to the base so that a position of the body on the base can be adjusted in a first direction toward the workpiece. A center adjustment block slidably engages the body. A second adjustable connector connects the center adjustment block and the body so that a position of the center adjustment block on the body can be adjusted in a second direction transverse to the first direction and transverse to the rotational axis of the workpiece. A head is detachably mounted on the center adjustment block. The head is removable from the center adjustment block by sliding movement in a third direction transverse to both of the first and second directions.

Abstract: A platform for supporting an engraving head in a manner accommodating translational movement without any associated rotation. The platform has a deck which is supported by a pair of flexible support columns. In operation the platform is situated alongside a rotating printing cylinder. The engraving head is mounted on the deck of the platform and is provided with a guide shoe which rides against the surface of the printing cylinder. As the cylinder rotates to angular positions having different radii, the engraving head responds with a purely linear reaction. Consequently the engraving head is able to engrave uniform-depth cavities in the surface of the printing cylinder. In two alternative embodiments the deck is driven by a resilient link arrangement which is coupled to a leadscrew and carriage assembly.

Abstract: A rigid tool slide support is disposed to be mounted in a screw machine in either of two different operating positions in each of which a tool slide reciprocates on the upper surface of the support to convey a cutting tool to and from the work that is to be machined. Projecting centrally from the bottom surface of the slide is an elongate, dovetail shaped guide which is slidably mounted in a similarly shaped but slightly wider recess in the support. Secured in the recess of the support adjacent one side thereof, and slidably engaged with a confronting side of the dovetail guide of the slide, is an elongate expansion gib having therein an adjusting screw that is rotatably adjustable to expand or contract the length of the gib, thereby to adjust the running clearance between the support and the slide.

Abstract: A working machine for machining a workpiece includes a base having a first track and a second track mounted therein and arranged in parallel with each other, at least one clamping device slidably mounted in the first track for clamping the workpiece, and at least one cutter device slidably mounted in the second track to mate with the at least one clamping device for machining the workpiece. In such a manner, the at least one cutter device is movable relative to the at least one clamping, device to machine the two ends of the workpiece.

Abstract: A method and related structure for operating an engine lathe comprising performing the desired lathe operation by automatically translating the tailstock toward a workpiece and automatically stopping said translation at predetermined distances.

Abstract: An adjustable toolholder apparatus includes a base plate having a planar supporting surface. A holder body includes a bottom planar supported surface which slideably engages and rests upon the supporting surface of the base plate. A linear position adjuster provides a linear sliding motion of the holder body upon the base plate. An angular position adjuster provides a rotational sliding motion of the holder body upon the base plate. The holder body has a wedge shaped recess within which is received a wedge shaped carrier block. A vertically adjustable column supports the wedge shaped carrier block from the base plate to adjust a height of the cutting tool. After linear and angular adjustment of the cutting tool relative to the base plate, the wedge shaped carrier block is clamped to the holder body, and the holder body and base plate are clamped to a cross slide to fix the cutting tool in its final desired position.

Abstract: A lathe carriage unit displaceably mounted on a bed for carrying and moving a tool post in a z-axis or x-axis direction comprises a saddle body having a guide slot extending along the length thereof and first and second bearing housings spaced apart from each other. A cross slider is slidably fitted to the guide slot of the saddle body for movement between an extended position and a retracted position. The cross slider can be caused to move by a drive mechanism into the extended or retracted position along the guide slot of the saddle body. The drive mechanism includes a ball screw rotatably supported at its opposite ends on the first and second bearing housings of the saddle body, a ball nut threadedly engaged with the ball screw and fixedly attached to the cross slider and a servo motor operatively connected to the ball screw for causing forward or reverse rotation of the ball screw.

Abstract: A centering device for use with a lathe having a bed, a head and tail stock for holding a work therebetween, a carriage reciprocally movable by a drive motor and a tool box includes a plurality of work rests disposed along the longitudinal direction of the lathe bed. Each of the work rests is movable between a first position for supporting the work and a second position spaced from the work. A control device is associated with the work rests for controlling movement of each of the work rests between the first position and the second position in response to the movement of the carriage and the control device operates to stop carriage movement so as to prevent collision with a work rest.

Abstract: A machine tool comprises a base, a spindle operably associated with the base, a work holder operably associated with the spindle for securing a workpiece to the spindle, and a tailstock operably secured to the base. The tailstock includes a slideway and a tailstock body slidably secured to the slideway. The tailstock body is movable on the slideway between a home position away from the workpiece and a work engaging position. A limit switch and trip members associated with the tailstock, and a hydrulic circuit are provided for controlling the movement of the tailstock body from the home position to an intermediate position prior to the work engaging position at an initial feed rate and from the intermediate position to the work engaging position at a subsequent feed rate where the initial feed rate is greater than the subsequent feed rate.

Abstract: An apparatus preventing a lathe tool from being damaged is composed of a lathe tool support provided thereon with a front chucking stand and a rear chucking stand, which are used to hold the lathe tool. The front chucking stand has an opening which receives the lathe tool and divides the front chucking stand into a first chucking block and a second chucking block. The first chucking block has a pivot shaft pivoted to the lathe tool support while the second chucking block has a thin strain gage attached to a surface thereof. The rear chucking stand has a front end with a through hole for receiving the rear end of the lathe tool and has a rear end having an actuating board welded thereto. The lathe tool support is provided with at least an electromagnet and a spring for pulling the actuating board.

Abstract: An automatic threading device, applicable to engine lathes or turret lathes, operating with a single point tool traveling parallel to the longitudinal axis of the lathe in a series of passes, generating the thread on a workpiece by synchronizing the travel of the device with the turning of the lathe, as in ordinary lathe threading, but in fully automatic sequences, reducing threading time to a few percent of that of conventional methods. A wide range of diameters, lengths, and thread pitches can be accommodated by one device. Except for a drive screw which provides longitudinal movement of the tool, all operating functions are pneumatically controlled. The device may be adapted for either temporary or semi-permanent attachment to a lathe.