Abstract: Determining of the starting and end positions of the machining programme of a gear making machine with respect to the axial position of the workpiece (11, 18) by means of a laser light line (14) projected at right angles to the workpiece axis, the position of which light line relative to the reference point of the tool (5, 17) is known. By mutual displacement parallel to the workpiece axis, the light line (14) and one or both of the workpiece end faces (16) are brought to coincide. The axial positions thus obtained are transmitted to the machine control system. The determining of the axial tool position takes place analogously by the projection of a laser light line onto the circumference surface of the tool (5, 17) at right angles to the tool axis.

Abstract: The device has a holder (10) in which an arbor (11) is located displaceably in direction z′. The arbor (11) is centralized by springs (15) and damped by damping elements (16). Located on the arbor (11) is a sleeve (18), displaceable in the x-direction at right angles to the z′-direction. The sleeve (18) is centralized by further springs, and damped by damping elements (27). Located for rotation in radial roller bearings (43) on the sleeve (18) is a further ring (44). The axis of rotation (7) is parallel to the z′-direction. Clamped on the ring (44) is a honing tool (6). With this device, vibrations arising during honing can be effectively damped. The machining of the gear is thereby improved, and the honing tool life prolonged.

Abstract: The profiling tool (10) has a segment (12) of a worm thread. Its active zone (13) is coated with grains of hard material (16) and is crowned in cylinder sections coaxial to the tool axis (26). During profiling, the grinding spindle (2) and the tool (10) rotate synchronously. By appropriate correction of the coupling ratio by means of a CNC control when moving the tool (10) in axial direction of the grinding worm (2), the grinding worm flank (1) can be dressed with any desired topology. The method makes it possible to profile topologically modified grinding worms (2) at the grinding worm (2) rotational speed used for grinding, which was previously not possible.

Abstract: In a stand (1), a work-piece spindle (2) is mounted for rotation around a vertical axis (C). On the stand (1), a slide (3) can be shifted horizontally and on the slide, a work-piece carrier (5) can be swivelled around a vertical axis (C1). On the carrier (5), a slide (6) can be shifted vertically. The slide (6) bears a linear guide element (7) able to be swivelled around a horizontal axis (A) and on which a second slide (8) can be shifted. The slide (8) bears the grinding spindle (axis B) with mounted grinding worm (9). A dressing device (12) is arranged, relative to the axis (C1), opposite the work-piece spindle (2). The machine makes easy operation possible, because all parts to be operated are quite accessible.

Abstract: Two simultaneously driven worm shaped globoidal tools of identical shape are radially adjustable towards the workpiece having tooth profiles. Their tooth thicknesses are smaller than the tooth gap widths of the finished tooth gaps on the workpiece. The workpiece is supported in a freely rotating manner. One tool is angularly displaced with respect to the other tool with a controlled speed and amount of the angular displacement forcing one tool into contact with only the left side of a tooth profile and the other tool into contact with the right side of a tooth profile. During the angular displacement, the left and right tooth sides are processed simultaneously.

Abstract: In a process for machining a spur gear by using a grinding worm having a curved tooth thickness smaller than the final measurement of the curved tooth gap of the spur gear to be produced, the grinding worm is first directed radially towards the spur gear until the desired distance between the axes is reached. Subsequently, a relative circular feed movement is carried out consisting of a positive or negative additional rotating movement of the gear or the worm. This additional rotating movement is superimposed on the corresponding basic revolution of the gear or the worm. In this way, first one flank and subsequently the other flank of each gear tooth is machined to its final dimension. With this process, a full linear contact exists between the grinding worm and the tooth flank of the gear during roughing independent of the amount of material to be machined. Due to the existing play, an effective cooling is possible so that high grinding outputs can be achieved.

Abstract: In a process for machining a spur gear by using a grinding worm having a curved tooth thickness smaller than the final measurement of the curved tooth gap of the spur gear to be produced, the grinding worm is first directed radially towards the spur gear until the desired distance between the axes is reached. Subsequently, a relative circular feed movement is carried out consisting of a positive or negative additional rotating movement of the gear or the worm. This additional rotating movement is superimposed on the corresponding basic revolution of the gear or the worm. In this way, first one flank and subsequently the other flank of each gear tooth is machined to its final dimension. With this process, a full linear contact exists between the grinding worm and the tooth flank of the gear during roughing independent of the amount of material to be machined. Due to the existing play, an effective cooling is possible so that high grinding outputs can be achieved.

Abstract: A pallet tray for transporting and storing workpieces in an automatic feed system attached to a machine tool includes an elongated metallic base member 1 having a plurality of plastic inserts 2 mounted thereon. Each insert has one or more holding pockets 3 for the individual workpieces. The base member has an inverted U-shaped profile defining a recessed guide groove 7 in the longitudinal direction which cooperates with a guide rail of the workpiece feeding system. With such construction different inserts can be provided to accommodate variously configured workpieces to thereby avoid the separate injection molding of a number of differently dimensioned, complete pallet trays.

Abstract: A process for dressing a single or multiple-grooved worm or threaded workpiece by a single or multiple-grooved worm or threaded dressing tool includes the turning of the workpiece and tool with the dressing tool in a comb-type contact with the workpiece. By using an additional axial relative movement between the dressing tool and the workpiece, determined by the radial positioning and return movements, the contact points are displaced such that the desired grinding profile is produced on the workpiece. Since the entire surface area of the instantaneous contact points is significantly smaller than the entire profile area of the workpiece, the cutting forces which occur are relatively small, so that high dressing speeds can be obtained. It is also possible to make various flank corrections on the workpiece. The apparatus for carrying out the process is also disclosed.

Abstract: A continuous-flow mixer for applying glue to wood particles used in making particleboard panels includes a rotating drum inclined at an angle to the horizontal and having at one end a glue spray nozzle aligned with the axis of rotation of the drum. Outlet openings are provided at the opposite ends of the drums such that the treated particles are conveyed by rotation of the drum and emerge unimpeded out of the drum via the outlet openings, and trickle onto a conveyor for removal of the treated particles.

Abstract: An apparatus for deflecting a stream of spreadable particles comprises a rotatable hollow cylinder having a perforated circumferential shell through which the particles normally pass. The apparatus further comprises means for controlling the operating conditions of the cylinder whereby the particles fed to the circumferential shell of the cylinder can no longer pass therethrough, but are impelled in a different direction. The method for deflecting the particles comprises the steps of closing the passage openings of the cylinder during its rotary movement, reversing the direction of rotation of the cylinder and increasing the speed of rotation of the cylinder. The spreading operation may be monitored by positioning means for capturing the deflected particles adjacent the periphery of the spreading device. The deflected particles may then be transported by conveying means to an appropriate measuring device.