Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: The present invention achieves improvement of an adjustment structure of a turning spindle in the vertical direction and the horizontal direction. A turning spindle unit 100 includes a turning spindle base push-pull block 140 which adjusts a turning spindle base 110 fixed onto a bed 10 in the horizontal direction. The turning spindle base 110 includes a turning spindle push-pull block 180 to push and pull a turning spindle 60. A mounting seat 112 inclines at an angle to the horizontal plane.

Abstract: A main spindle device has a main spindle (1) having a hollow hole, and a chuck unit (10) for grasping a work (W). A pipe unit (71) is inserted into the hollow hole of the main spindle (1) and receives insertion of the work (W) to thereby prevent the work (W) from vibrating when rotated together with the rotation of the main spindle. A support unit (72) supports the pipe unit (71) at one end of the main spindle (1) such that the axial line of the pipe unit (71) coincides with the axial line of the main spindle (1) and such that one end of the pipe unit (71) projects from the one end of the main spindle (1) to be positioned inside the chuck unit (10).

Abstract: The present invention achieves improvement of an adjustment structure of a turning spindle in the vertical direction and the horizontal direction. A turning spindle unit 100 includes a turning spindle base push-pull block 140 which adjusts a turning spindle base 110 fixed onto a bed 10 in the horizontal direction. The turning spindle base 110 includes a turning spindle push-pull block 180 to push and pull a turning spindle 60. A mounting seat 112 inclines at an angle to the horizontal plane.

Abstract: The invention concerns a device to hold a motor-driven work spindle (1) in a housing of a processing machine with an outside ring (7) and an inside ring (6), arranged within the outside ring (7), so that it can be displaced and tilted axially, to hold the work spindle (1), wherein the inside ring (6) is pretensioned with respect to the outside ring (7), in an elastically resilient manner in the axial direction, by at least one pretension element (8), and wherein the inside ring (6) is held in an operating position within the outside ring (7) by a holding device with a prespecified holding force. The holding device is designed as a magnet arrangement (9) with at least one magnet (35, 36; 43), arranged in the inside ring (6) and/or the outside ring (7), for the creation of a magnetic holding force.

Abstract: Extruded polymer foams are prepared using brominated fatty acids, an ester, amide or ester-amide of a brominated fatty acid, a glyceride of one or more brominated fatty acids, or a polymerized brominated fatty acid as an FR additive. The brominated FR additives unexpectedly are stable at the extrusion temperatures, and provide excellent flame retardancy to the foams.

Abstract: The invention relates to a protection device for a motor spindle (1) arranged in a housing (2), particularly of a machine tool, having an inner ring (6) fixedly joined to the motor spindle (1) and an outer ring joined to the housing (2). The inner ring (6) is arranged in the outer ring (7) in a way permitting axial motion and a tilting motion, and is placed under elastically resilient preload against the outer ring (7) by means of preloading members (8).

Abstract: A chainguard for use on a bicycle includes a housing having a connecting portion and an engaging portion. The connecting portion and the engaging portion are connected to a seat tube and a rear stay of a bicycle frame in the bicycle. Additionally, the rear stay includes a first portion and a second portion adapted for engaging with an axle of a rear wheel, and the first and second portions are interconnected at a corner. Additionally, the second portion includes a first surface, a second surface and a third surface substantially transverse to and interconnecting the first and second surfaces. Further, the third surface defines a positioning portion on which the engaging portion of the chainguard is mounted.

Abstract: In order to improve a lathe comprising a machine frame, a spindle housing which is arranged on the machine frame and in which a workpiece spindle rotatable about a spindle axis is arranged, as well as at least one functional unit designed as a tool carrier and/or as a workpiece transport device in such a manner that as efficient a machining as possible of the workpiece is possible, it is suggested that the spindle housing be designed as an upright housing member, that the upright housing member be arranged on one side of a working space and border on it and that several functional units be arranged on the upright housing member.

Abstract: A main spindle device has a main spindle (1) having a hollow hole, and a chuck unit (10) for grasping a work (W). A pipe unit (71) is inserted into the hollow hole of the main spindle (1) and receives insertion of the work (W) to thereby prevent the work (W) from vibrating when rotated together with the rotation of the main spindle. A support unit (72) supports the pipe unit (71) at one end of the main spindle (1) such that the axial line of the pipe unit (71) coincides with the axial line of the main spindle (1) and such that one end of the pipe unit (71) projects from the one end of the main spindle (1) to be positioned inside the chuck unit (10).

Abstract: A chuck (1) for angular offset woodturning including a first member (2) adapted to be secured to a lathe, and a second member (3) adapted to support a work piece and secured to the first member in such that the second member is oriented with respect to the first member between at least two configurations. The first member having a first axis (4) coaxial with an axis of rotation of the lathe and the second member having a second axis (5), and in one of the configurations the second axis is coaxial with the first axis, and in the other configuration the second axis is angularly offset. The chuck further includes a releasable fastening member (12) incorporating alignment members allowing the second member to be secured in one of the two configurations and that in the other configuration the second axis lies relative to said first axis at one of a number of predetermined angular offsets.

Abstract: In a spindle head for a machine tool in which a spindle (10) to which a tool is mounted is rotated around an axial line of a support shaft (58, 59), two rotating members (9, 58) that form a rotation transmission mechanism for rotating the spindle (10) and that transmit drive force of the rotation driving device (56) are fastened to each other at respective connection sections thereof by a bolt group (301) and are connected to each other so as to be prevented from rotating relative to each other by friction force resulting from the fastening. Rotation prevention torque based on the friction force is a value greater than torque applied to the connection sections during processing and smaller than torque applied to the connection sections when external force that causes the spindle (10) to deform beyond a permissible range is applied to the spindle (10).

Abstract: A spindle apparatus includes a rotatable first spindle (5, 32) to which a tool can be attached. The first spindle is supported in a base with high precision using an air hydrostatic bearing. The spindle apparatus further includes a second spindle (6, 33) capable of rotation about an axis substantially aligned with the axis of the first spindle, first connection means for electrically connecting a base side and the second spindle, and second connection means for electrically connecting the first spindle and the second spindle. Electrical connection between the base side and the first spindle is carried out via the first and second connection means. The first connection means is, for example, a brush (15, 36). The second connection means has a degree of mechanical freedom and is, for example, a flexible electrical wire (17, 39) or a helical spring (51).

Abstract: A lathe spindle unit is provided with: a rotatable spindle having a cam follower, and a holding section for holding a work piece; a drive source for rotatively driving the spindle; and a driven rotation shaft that has a cam and that is rotatively driven by the drive source. The driven rotation shaft rotatively drives the spindle using the cam and the cam follower.

Abstract: A sensor detects an axial position of a rod controlling a tool-gripping collet in a tool-holding spindle whenever a tool is picked during a working session. The current obtained rod position value is compared with previous rod position value, which has been obtained and stored during the previous tool-picking and, if their deviation is larger than a predetermined threshold, the collet closure is notified as defective. The rod position is obtained as an average of a plurality of closely spaced readings, which are taken after a predetermined delay from the collet closure.

Abstract: A mandrel device includes a spindle for rotatably attaching to a machine tool, a rotating device for selectively rotating the spindle, and a driving device for selectively driving the spindle in different speed or different torque when the rotating device do not rotate the spindle. The rotating device includes a motor coupled to or engaged with the spindle for rotating the spindle. A housing may be attached to the machine tool for rotatably supporting the spindle, and the motor may be disposed in the housing and engaged with the spindle. The driving device includes a gear attached to the spindle, a worm movable toward or away from the gear, and a motor coupled to the worm for rotating the spindle with the gear and the worm.

Abstract: A rear derailleur guard for mounting onto a bicycle with an axle, a wheel, a horizontal frame member, a vertical frame member and a rear derailleur. The guard has a main region with an apex, a horizontal member that extends forwardly from the main region and contains a semi-circular horizontal clip, a vertical member that extends upwardly from the main region and contains a semi-circular vertical clip and a lower shield that extends downwardly and forwardly from the main region. When the guard is mounted, the horizontal clip attaches to the horizontal frame member and the vertical clip attaches to the vertical frame member. The axle protrudes between the horizontal member and the vertical member adjacent to the apex. The lower shield has an inside edge, an outside edge and exterior and interior surfaces extending therebetween. The outside edge curves such that it is perpendicular to the interior surface.

Abstract: Spindle nut holder for a spindle gear which drives a lever and functions under extreme conditions such as in a vacuum, under radiation exposure, and at a temperature close to absolute zero. The spindle nut holder includes a spindle nut and strip-shaped links each having an elongated, narrow cross section. One end of each link is connected to the spindle nut and the other end is connected to a frame. A pair of links are arranged on opposite sides of the spindle nut holder and each is oriented perpendicular to the spindle axis and the cross-section provides longer sides and shorter sides, the longer sides being parallel to the spindle axis. The cross-section of another link provides longer sides and shorter sides and is arranged relative to the pair of links such that the longer sides of this link are perpendicular to the longer sides of the pair of links.

Abstract: A spindle nut retainer is provided for preventing a nut threaded upon a spindle from unthreading and detaching from the spindle. The spindle nut retainer includes an integral base section and peripheral section maintaining a cup-shaped configuration. The base section includes an aperture through which the spindle may pass and the peripheral section includes a plurality of fingers which form windows therebetween used to form a locking connection between the spindle nut retainer and the nut.

Abstract: An improved carving blank and mandrel for mounting the blank in a carving machine enables accurate carving of prosthetic and orthotic positive shapes. The blanks are simple to mount and dismount and means are provided enabling a repeatable mounting position in one angular orientation only to be achieved. The blanks are firmly fixed in place on the mandrel during the carving operation, and they are simple and inexpensive to manufacture thus reducing manufacturing costs while achieving high shape accuracy.

Abstract: An alignment device to be mounted on an on-vehicle brake lathe to provide quick and easy lateral run out compensation. A concentric bottom plate, ring member and top plate are mounted onto the output shaft of the lathe prior to attaching the lathe to an adapter mounted on a vehicle hub/brake assembly. Two spring-loaded screws extend through the bottom plate, ring member and top plate and into complementary recesses in the mounting face of the lathe. The ring member includes an adjustment screw which, when engaged, and in combination with the tension on the center shaft of the lathe output shaft, will alter the planar alignment of the top plate and thus compensate for the lateral run out of the hub/brake assembly and allow for the precision machining of the brake rotor surface with the cutting tips of the lathe.

Abstract: A runout compensator is provided that angulates a face surface by adjusting two members whose mating surfaces have been machined to slant relative to the central axis of each member. A first member has a shaft over which slides the second member so that the mating surfaces of each member come into and are maintained in contact. Rotating the second member about the shaft of the first member varies the angulation of a face surface. Correctly adjusting the runout compensator, which is attached to a lathe, and a load plate assembly providing biasing to hold the workpiece between itself and the runout compensator, allows the workpiece to be firmly held in the angled position needed to compensate for the runout in the workpiece as the workpiece is turned upon a lathe.

Abstract: A method of processing a leading portion of a rotating workpiece is performed by rotating a tip mounted on a cutter shaft and facing an outer circumferential surface of the workpiece. The tip has a small radius of rotation for high precision processing with small cutting resistance. The leading portion is cut by the tip with the cutter shaft inclined to a side opposite to the leading portion of the workpiece with respect to a direction orthogonal to the axis of rotation of the workpiece.

Abstract: Disclosed is a system for forming a variable speed pulley, a variable speed drive system, a variable speed lathe, a lathe having a slidable, horizontally-rotatable headstock, and a variable speed lathe having a slidable, horizontally-rotatable headstock.