Abstract: A jointing method and apparatus is described for jointing rotating blades on surfacing machines such as wood planers. The apparatus includes a pair of rods secured to the surfacer framework. An actuator mechanism is slidably mounted to the rods by a pair of bushings. The actuator mechanism carries a jointing stone securely, yet adjustably, for motion along the length of the rods and along the rotating cutter head. The adjustment mechanism is provided such that the stone can be moved in an arc toward and away from the cutter head. This adjustment is facilitated, along with free motion of the stone holder along the guide rods by a single hand wheel operated at a position remote from the rotating cutter head.

Abstract: A system for performing operations on the edge of an irregularly shaped workpiece, such as seaming the edge of a piece of glass (G) is accomplished by moving the glass (G) along a conveyor (11, 12). The edge of the glass (G) is detected by a camera (13) which makes images of the glass (G). Electronic circuitry (20) receives the image information from camera (13) and determines the location of the edge of glass (G) at a plurality of locations and stores information which is indicative of the entire profile of the glass (G). Additional circuitry (32) receives signals proportional to the location of the seaming heads (16, 18) and compares these signals with the data stored in circuitry (20). When the glass (G) has moved downstream to the position to be seamed, the seaming heads (16, 18) are then moved to the position of the detected profile of glass (G) to perform the seaming operation.

Abstract: A process for cutting a diamond to realize an invisible mounting by using cuts situated below the girdle in which may be engaged the mounting. According to the invention the notches (7) have the shape of a dihedron (4) of which the two surfaces (5-6) are situated on both sides of the plane of the natural table along which is oriented the polished table (1), the two surfaces (5-6) of each dihedron being themselves polished by using a sawing machine in which the diamond carrier is movably mounted along a direction parallel to the plane of the disk and driven in an alternating motion along this direction, the surface of the disk being coated with a mixture of bort and gum arabic diluted with water, the polishing speed of the surface of the disk with respect to the diamond being comprised between 2500 and 3200 m/min., with about 10 passages per minute of the diamond in contact with the surface of the disk.

Abstract: A casing ejector in an enclosed fighting compartment for ejecting stump casings of partially combusted cartridge casings.For purposes of not hindering the loading process of an automatic loading mechanism, the cartridge casing ejecting mechanism includes a linkage of a plurality of holding arms which pivotally support a loading tray which is movable between a receiving position and expelling position. In the receiving position the tray receives the stump casing of a fired cartridge casing. The linkage of holding arms has one end of a cylinder-piston pivotally connected thereto while the other end is pivotally connected to a wall of the fighting compartment. This piston cylinder is adapted to move the tray in the linkage from the receiving position to the expelling position and vice versa. An expelling opening is provided in the fighting compartment opposite the loading tray in its expelling position.

Abstract: The apparatus for improving tire uniformity includes contra-rotating grinding wheels for removing tire material from the upper and lower shoulder portions of the tire. The grinders are moved into grinding engagement with the tire along a path that is defined by a radius of the tire to ensure that both grinding wheels at each shoulder of the tire make simultaneous contact with the tire. The amount and extent of grinding accomplished by the contra-rotating grinders is controlled by a grind control circuit. The grind control circuit measures the no-lead current level of the grinder motor and compares the no-load current level with the current level when the grinder motors are under load. When the grinder current under load is above a predetermined maximum load current, the control circuit will signal the grinders to retract from engagement with the tire until the load current drops below the predetermined maximum level.

Abstract: A wood surface treatment system comprising a tandemly arranged endless abrasive cross-belt and flexible rotary abrading surface treating apparatus wherein the abrasive cross-belt portion of the system which includes a platen assembly arranged to move in an oscillatory or epicyclic pattern relative to the work surface and wherein the flexible rotary abrading portion of the apparatus includes a pair of angularly disposed rotary abraders, such as cylindrical brushes. The axis of each individual flexible rotary abrader is disposed at an acute angle, preferably 45 degrees, to the axis of the conveyor, with the individual axes being preferably disposed at 90 degrees, one to the other. The cross-belt portion of the apparatus preferably includes means for drivably oscillating the platen.

Abstract: A process and an apparatus for carrying out a process for multiple lap cutting of solid materials, especially those having rectangular or square cross sections, in which the workpiece is subjected, during the cutting operation, to a rotating motion thereby improving the quality of the discs and increasing the cutting efficiency.

Abstract: Apparatus for coupling a rotary grinding tool to a rotary spindle has a long centering cone at the front end of the spindle for entry into a complementary conical hole in the main portion of a hub which separably holds the tool. The spindle transmits torque to the hub by means of two male torque transmitting elements provided on an axial extension of the hub and extending into complementary recesses provided on a ring-shaped member at the smaller-diameter end of the cone. The tool is held in a predetermined axial position by an end face of the extension which abuts an end face of the cone. A package of springs is installed in the cone to normally bias the extension of the hub axially of and away from the spindle so as to facilitate separation of the tool from the spindle by means of an automatic tool changer. The spring surrounds the shank of a screw or bolt which separably secures the extension of the hub to the cone of the spindle.

Abstract: In the method for introducing an operation for dressing a grinding wheel, actual differential value is formed from its infeed distance and the material removed from a workpiece, which value is compared with a desired differential value. As soon as the actual differential value is at least equal to the desired differential value, a signal for dressing the grinding wheel is generated. The grinding wheel can be used for the optimum length of time, because the actual degree of bluntness of the grinding wheel is taken into consideration in the measurement. The grinding wheel is seated on a feed carriage, the infeed distance of which is monitored by a measuring device. A further measuring device is provided for measuring the material removed from the workpiece. Both measuring devices are connected via a signal line respectively to a computer for a comparison of the desired value and actual value. The computer is provided with an output signal.

Abstract: The rough ground rear surface 13b of a semiconductor wafer 11 is mirror-polished by localized irradiation with a focused laser beam 21. The wafer is moved relative to the beam, and the melt puddle formed by the beam thereafter recrystallizes at its trailing edge 24 to leave a mirror smooth rear surface 13c.

Abstract: A dressing roll unit is supported on a nonrotating shaft clamped and maintained as a "fixed end" beam, thereby restrained against axial movement and deflection. The shaft is formed with spaced-apart bearing points, wherein wedge-shaped relief sectors are formed about the shaft at the bearing points, and a roll body is maintained about the bearing points with an annular clearance. Rotation of the dressing roll body and roll thereby forms high pressure hydrodynamic wedges of oil at the relief sectors and annular clearances, to create an extremely rigid roll mounting unit, without the need for pivoting bearing parts.

Abstract: A grinder wheel table feed apparatus converts rotation of a table driving motor into reciprocation movement of a grinder wheel table through a ball-screw mechanism to thereby impart a traverse movement to the grinder wheel table between a non-working position and a working position. The rotation of a reciprocation axle drive motor is converted through an eccentric cam into an oscillation movement of the grinder wheel table when the table is in its working position. A drive control system includes an encoder operable to read the rotational position of the reciprocal axle drive motor, and a control device effective to stop the eccentric cam at a predetermined eccentric angular position.

Abstract: A workpiece holding assembly is operable in combination with a machining apparatus, such as a grinding or milling machine, for presenting a workpiece to a cutting tool of the machining apparatus in various different angular positions in order to adapt the machining apparatus for producing undercut areas, such as dovetail-shaped slots, in the workpiece. The workpiece holding assembly includes a base which is mountable on a machining apparatus, a gimble which is rotatably mounted on the base, a mounting assembly for securing a workpiece on the gimble and a drive assembly for automatically rotating the gimble to tilt the workpiece. The workpiece holding assembly is preferably utilized in combination with a machining apparatus of a type having a computerized numerical control, and it is preferably adapted to be interconnected with the computerized control for automatically controlling the rotational movement of the gimble.

Abstract: Machining apparatus (10) which can be mounted on the cage (15) of a slew bearing (12) to grind the bearing surface (23) of a rail section (13). The machining apparatus is provided with a grinding profile 30 which it may follow to perform the desired cut along the rail section (13).

Abstract: A cutter including a chisel wheel having an axis of rotation about which the wheel is adapted to rotate during a cutting operation; a plurality of cutting tools each including a tool body having a longitudinal axis, a chisel bit and a chisel shank; the chisel wheel carrying chisel holders which freely rotatably mount each cutting tool for rotation about its associated axis, each chisel bit being a separate hard metal body fixed to an end portion of its associated tool body remote from its associated shank, each chisel bit having a cone shaped working section merging toward an apex portion, a plurality of peripherally spaced axially extending grooves formed in the cone-shaped working section which automatically rotate each cutting tool about its longitudinal axis during the operation of the chisel wheel, and each longitudinal axis setting-off with a plane normal to the axis of rotation of the chisel and included angle of up to generally 45.degree.

Abstract: Cutlery sharpening method and apparatus for sharpening a cutlery blade edge wherein the blade edge to be sharpened is pivoted into and yieldingly moved along a blade sharpening surface when moved in one direction and pivoted out of and moved above the blade sharpening surface when moved in an opposite direction.

Abstract: An orbital sander/grinder has on one side of its housing a rotatably mounted disk holder which is brought into orbital motion by means of a drive mechanism that is inside the housing, and is coupled with an eccenter. The eccenter is rotatably mounted on one side in the housing, on the other side in the disk holder, while the rotational axis in the housing is radially offset relative to the rotational axis of the eccenter in the disk holder, but the two axes run parallel to each other. A balancing weight for compensating the unbalance rotates in synchronization with the eccenter. To ensure sanding/grinding with a minimum of vibration, means are provided to compensate for the transverse forces generated by the abrasive and/or cutting forces that are exerted at the eccenter.

Abstract: A wafering machine having a multiplicity of wire cutting blades supported by a bladehead reciprocally moving past a workpiece supported by a holder that rocks about an axis perpendicular to the wires at a frequency less than the reciprocation of the bladehead.

Abstract: A high-speed work finishing machine includes a plurality of work finishing units each supported by a high-speed turret for carrying barrel containers to be driven for both orbital and axial rotations. It further includes a circulating transport path for carrying a barrel container from the unloading location where it is to be demounted from a work finishing unit to the loading location where it is to be mounted to the same unit, and various means disposed along the circular transport path between the unloading and loading locations, those means involving the handling of a barrel container and/or the works and abrasive media under the control of a central programmable sequential controller.

Abstract: Apparatus for the positional control of the edge grinding of an ophthalmic lens to a desired peripheral shape is effected by a control computer which processes and stores data representative of a pattern which delineates the peripheral shape of the lens. The data is derived by rotating a linear image sensor about an axis passing through a support for a pattern which delineates the required shape. The sensor generates pixel data which is processed and stored by the control computer for use for selective control of a lens periphery grinder.