Abstract: The invention relates to a machine tool (10) for the machining, and preferably stock removal, of a workpiece by means of a tool, comprising at least one translational movement device (18) which displaces the tool and workpiece relative to one another along a movement axis (X), said movement device (18) comprising a base structure (22), a movement part (20) that can be moved along the movement axis relative to the base structure (22), a linear guide device (24) that extends along the movement axis (X) and guides the movement of the movement part (20), and a movement drive that drives the movement of said movement part (20). The linear guide device (24) and the movement drive are covered, so as to protect them from external influences such as chipping accumulation and/or lubricant and/or coolant sprays, by a cover (34) which is designed to be separate from the movement part (20).

Abstract: A shrinking device (1) for the thermal clamping and release of tools in shrink chucks has a preferably inductively operating heating device (17) for heating tool reception sections of shrink chucks and a cooling device for the active cooling of the heated shrink chucks. The device has several, particularly three work stations (5, 6, 7) and in each work station it is possible both to heat a shrink chuck and also actively cool the shrink chuck received. By pivoting a column (16) carrying the heating device it is possible to interchange between the workstations. The shrinking apparatus makes it possible on a continuous basis to shrink large numbers of tools.

Abstract: In a method of machining a first and a second surface recess in a workpiece, the workpiece has a longitudinal axis and a first local Cartesian coordinate system. The machine tool has a longitudinal axis and a second local Cartesian coordinate system, the first and second surface recess are associated with a first and second recess longitudinal axis and a non-circular cross-section. The recesses are separated on the surface of the workpiece such that they are mirror images of each other about a plane along the longitudinal workpiece axis. A skew angle is defined between the first recess longitudinal axis and the workpiece axis in the first plane.

Abstract: In a method for measuring a rotary tool use is made of a measuring device, which has an optoelectronic image acquisition device with optics alignable with the rotary tool and an image processing device for the computer-aided evaluation of acquired images. For measurement purposes a section of the rotary tool is brought into the image area of the optics and the rotary tool is rotated about its rotation axis. During rotation a sequence of frames of the rotating rotary tool is acquired. An evaluation of the frames is carried out with respect to at least one image parameter, which represents a measure for the positioning of the tool contour relative to the sharpness zone of the optics. By computer-aided selection a selection is made of the particular frame in which the image parameter corresponds to a positioning of the tool contour in the sharpness zone of the optics. This selected frame is used for determining at least one tool parameter characterizing the tool contour.

Abstract: In a roll grinding machine (2) for profile grinding of rolls with a constructionally simple device for a very precise adjustment of a grinding wheels (4) supported on a grinding spindle (7) tangentially with respect to a roll profile, the grinding spindle (7) is arranged in a rotatable sleeve (8) the longitudinal axis (9) of which is inclined at an angle (10) relative to the longitudinal axis (11) of the grinding spindle (7).

Abstract: A machine tool, such a lathe, is described that includes a machine base and four base columns supporting a horizontal roof-shaped upper section. Horizontally guided Y-carriages and Z-carriages are suspended from an underside of the upper section. A horizontal working spindle is suspended from the Z-carriages. An X-carriage is arranged and vertically guided on the lower section of the machine stand.

Abstract: A work tool changer for a work tool center with horizontal work tool spindle and an a work tool magazine, which receives the work tools in a vertical axis. The work tool changer is provided with a vertically transportable lift sled (28), on which a 2-armed gripper (94) is provided. The gripper (94) is mounted in a gripper head (66), which is pivotable between a position with horizontal gripper axle (90) and a position with a vertical gripper axis (90). The pivot movement of the gripper head (66) and the swivel movement of the gripper (94) about its gripper axle occurs by means of the same driver (44, 46, 50, 52), which drives the uplift movement of the lift sled (28).

Abstract: A palette changer for work tool machines, wherein a palette (44) is pushed by means of a swing arm (42) from the palette receiver (20) of a sled (14) over a bridge table (28) onto a transfer station (50). The sweeping movement of the swing arm (42) is driven by means of a pinion (38) which engages a fixed rack (24). The bridge table (28) is transported along with the sled (14) so that the palette guide (22 or 30) of the sled (14) and the bridge table (28) during the sliding of the sled (14) are constantly in alignment. The entire palette exchange is exclusively driven and controlled by the movement of the sled (14).

Abstract: In a frame with a horizontal bed (10) and a vertical upright (12) there is for bracing and stiffening a vertical rigid wall (14) rigidly with the bed (10) and the upright (12) connected. The bed (10), the upright (12) and the wall (14) are cast as a single piece of a polymerizable resin-concrete. The wall (14) provides the frame with a high bend and torsional stiffness at a low weight. The wall (14) additionally serves to receive guides and bearing arrangements for functional elements of the machine tool, which by this means can be disposed spatially one above the other.

Abstract: A rotating tool for the cutting of hardened workpieces is comprised of a base body made of steel and having a working surface. The working surface is coated with a homogeneous layer of an extremely hard material. The layer has a uniform thickness. The working surface has a plurality of microcutting grooves that extend parallel to one another and at an acute angle relative to a tangent of the working surface. Each microcutting groove has a cross-sectional profile with a cutting edge and a chip space. The extremely hard material is preferably boron nitride and the base body is preferably made of hardened steel.

Abstract: An optical system utilized to provide guidance information in the form of a modulated beam for a beamrider missile during its rocket powered flight phase. Our system comprises first and second zoom type optical subsystems arranged to function cooperatively in object space, utilizing coincident lines of sight, with these optical subsystems serving to provide guidance information to the missile when the exhaust plume from its rocket engine is relatively difficult to penetrate. The first optical subsystem is utilized in a closed loop servo system for positioning a mirror gimballed about two axes, such that it continuously tracks the missile. The second optical subsystem, along the optical axis of which the modulated beam is directed, comprises a negative optical group and a positive optical group combined into a defocusable beam expander.

Abstract: A method for recording the removal of material during high precision finishing work pieces that must be of an extremely precise shape and must withstand extreme stress, as required especially in the aviation industry, is provided which ensures that the work piece has a hardened layer of a required minimum thickness at all stressed or load-carrying positions.

Abstract: A method and a device for preventing thermal damage of workpieces during grinding are provided. According to the inventive method a two-flank rolling test is performed via a master pinion before the grinding process. The result of this two-flank rolling test is then used to calculate an effective maximum amount of material to be removed. Based on a permissible amount of material to be removed per time unit for the respective grinding tool a permissible rate of advancement of the grinding tool is calculated with the determined effective maximum amount of material to be removed. The calculated rate of advancement is then fed into the machine control unit.

Abstract: The present invention discloses a method and a device for preventing thermal damage of workpieces due to heat developed by a grinding process. According to the method the temperature increase at the surface being ground is determined and the resulting actual value is compared to a reference value which has been established under the same grinding parameters with a grinding disk that caused thermic damage to the reference workpiece. During manufacture, the grinding process with the respective grinding disk is interrupted as soon as a temperature increase has been detected that corresponds to the respective temperature causing thermic damage. The reference value is determined such that it includes a certain safety margin. The determination of the actual value and the reference value may be accomplished by using geometric deformations of the workpiece that result from the temperature increase due to the grinding process.

Abstract: When cartridges are delivered from a stationary cartridge magazine to an elevatable firing weapon, it is customary to use a deflection or guidance unit, by which the cartridges can be reliably delivered to the elevatable firing weapon in every position of the latter. The cartridges are delivered to the elevatable firing weapon in a telescopic guide or infeed channel. With large elevation of the elevatable firing weapon, this telescopic guide channel is substantially contracted. On the other hand, this telescopic guide channel is substantially extended when the elevation of the elevatable firing weapon is relatively small. In the telescopic guide channel there is provided a bucket chain for conveying cartridges. The individual buckets of this bucket chain are interconnected by knee joints, so that the bucket chain can likewise be extended and contracted. One end of the telescopic guide channel is mounted at the stationary cartridge magazine and the other end is mounted at the elevatable firing weapon.

Abstract: In load-dependent brake valves it is customary to control the brake force as a function of the stroke of vehicular suspension springs. If the stroke of the vehicular suspension springs is not proportional to the vehicle load, there is the risk that either the empty vehicle or the full vehicle is too strongly braked. This can be avoided in that a pivotable brake lever is pivotable as a function of the stroke of the vehicular suspension springs, the pivotable brake lever comprising a first pivoting range in which a first edge of a piston of the load-dependent brake valve is supported and a second pivoting range in which a second edge of the aforesaid piston is supported. It is thereby achieved that the brake force is always proportional to the vehicle load.

Abstract: A weapon housing for a firing weapon including a front portion and a rear portion in which the front and rear portions are spaced apart by means of a plurality of bands. The weapon barrel is carried by the front portion and the firing device is carried by the rear portion. Cartridge chambers are fed laterally to the weapon housing. The bands which connect the front and rear portions of the housing, preferably, are fiber bands.

Abstract: A centerless turning machine for rods. The machine includes a cutter-head mounted at the front end of a rotating hollow shaft, and further includes a plurality of advancing rollers of an infeed device operatively mounted at the inlet end of the turning machine. The turning machine further includes a front guide mechanism and a rear guide mechanism, respectively mounted on opposite sides of the cutter head, and also includes a clamping carriage which is mounted on the outlet side of the turning machine. The rear guide mechanism takes the form of a tubular support which is provided with a flange mounted in the machine housing and which extends into the rotating hollow shaft. The rear guide mechanism has, at its free end, which protrudes into the hollow shaft, three individually spring biased guide elements for the rod. The springs for each individual guide element form a first resilient abutment for each guide element. The movements of the three guide elements are synchronized by a rotatable ring.

Abstract: Within the tactical operating distance, the projectile body in a short-range projectile ought to exhibit as far as possible the same performance characteristics as the corresponding normal or full-range projectile.

Abstract: For manufacturing a pinion of a pair of mating bevel gears having contact-line tooth bearing or crowning in accordance with the method developed by Litvin et al, the cutter radii of respective outer and inner blade edges in the duplex or double-cut method and therewith the centers of rotation of the cutter heads as well as the center of rotation of a generating gear are altered in relation to the settings for manufacturing the mating or meshing gear. This would require cutter heads provided with adjustable cutter radii. In order to render possible the use of commercially available cutter heads, provision is made for achieving the alternation of the cutter radii by inclination of the cutter-head axes.