Abstract: In a machining sequence a flow of coating fluid is applied, such as through a nozzle, to wet at least the cutting surface of a tool to be engaged with a part to perform a machining operation thereon. The fluid is applied quickly and dried or cured to form an adherent coating layer on the tool. Propylene glycol is an example of a suitable fluid. After the tool is wetted an energy source is placed in appropriate proximity to the wetted tool The energy source is energized to heat the tool, thereby raising its surface temperature sufficiently to dry the coating layer. This process, and the apparatus performing it, can be incorporated into the machining operation and the tool coating can be refurbished in situ, on a regular basis, before or after a machining operation as appropriate.

Abstract: The invention concerns a machine for the chip-forming machining and the measurement of gears and screw-type workpieces. Arranged on a swivel head (6) swivellable about an axis (A) at right angles to the rotary axis of the workpiece (4) are functional units (8a, 8b, 8c, 8d) with machining and measuring tools (10, 12, 14, 15, 17) which are displaceable radially and parallel relative to the swivel axis (A), which said tools can be brought consecutively into engagement with the workpiece (4), thus making possible the application of different tools (10, 12, 14, 15, 17) and machining techniques in the same work set-up without colliding. The work spindle (1) is driven by electric motor either directly or via a gear unit.

Abstract: In order to manufacture parts with an outer profile, a workpiece 32 is pressed by a pressure piece 24 through a ring-shaped cutting tool 34. The cutting tool 34 has a plurality of disks with inner cutting edges 62 for removing material from the workpiece 32. The cutting edges are progressively longer in the advance direction, so that each cutting edge removes material chips and the last cutting edge in the advance direction corresponds to the desired outer profile of the part. In order to improve chip removal, the chip chambers 74 located between the cutting edges communicate with the outside through radial connection openings 128 which are distributed all around their circumference. To hold the workpiece 32 securely on the pressure piece 24, a pressure pad 76 extends through the cutting tool 34 and is supported on the side of the workpiece 32 opposite to the pressure piece 32, and a hydraulic piston 80 generates a compression force on the pressure pad 76.

Abstract: The invention relates to a tool head with a spindle bearing arrangement The bearings (9, 10) of said arrangement rest with one of their bearing shells on a driven spindle (2) with a tool holding fixture (1). With their other bearing shell they interact with a housing (8) in such a manner that in at least one part (10) of the bearings (9, 10) the respective other bearing shell interacts with a sliding piece (11) which is slideable along the housing (8) in the one sliding direction and which locks the spindle (2) with the housing (8) in a locking position. In the other sliding direction, said sliding piece releases the spindle in a release position. The invention provides a universally useful tool head by the following configuration: The respective other bearing shell of the one part (10) of the bearings (9, 10) is at least partially enclosed by the sliding piece (11). Said sliding piece (11) is forced into the locking position with a predetermined contact force by a drive device.

Abstract: In order to manufacture parts with an outer profile, a workpiece 32 is pressed by a pressure piece 24 through a ring-shaped cutting tool 34. The cutting tool 34 has a plurality of disks with inner cutting edges 62 for removing material from the workpiece 32. The cutting edges are progressively longer in the advance direction, so that each cutting edge removes material chips and the last cutting edge in the advance direction corresponds to the desired outer profile of the part. In order to improve chip removal, the chip chambers 74 located between the cutting edges communicate with the outside through radial connection openings 128 which are distributed all around their circumference. To hold the workpiece 32 securely on the pressure piece 24, a pressure pad 76 extends through the cutting tool 34 and is supported on the side of the workpiece 32 opposite to the pressure piece 32, and a hydraulic piston 80 generates a compression force on the pressure pad 76.

Abstract: An apparatus and method for removing a pressure tube from a nuclear reactor end fitting. A series of grooves are milled in the inside surface of the pressure tube in the area of the roll fitting by means of an elongated milling tool inserted in the pressure tube. The milling tool has a rotary cutter bit that can be controlled for longitudinal and rotational position and depth of cut from the proximal end of the tool. Once the grooves are milled, the milling tool is withdrawn and replaced with an elongated collapsing tool. The collapsing tool has a pair of jaws that engage the milled grooves and draw the wall of the pressure tube inward thereby releasing it from the end fitting. The use of the present invention avoids the requirement to remove both end fittings to replace a pressure tube.

Abstract: In order to manufacture parts with an outer profile, a workpiece (32) is pressed by a pressure piece (24) through a ring-shaped cutting tool (34). The cutting tool (34) has a plurality of disks with inner cutting edges (62) for removing material from the workpiece (32). The cutting edges are progressively longer in the advance direction, so that each cutting edge removes material chips and the last cutting edge in the advance direction corresponds to the desired outer profile of the part. In order to improve chip removal, the chip chambers (74) located between the cutting edges communicate with the outside through radial connection openings (128) which are distributed all around their circumference. To hold the workpiece (32) securely on the pressure piece (24), a pressure pad (76) extends through the cutting tool (34) and is supported on the side of the workpiece (32) opposite to the pressure piece (32), and a hydraulic piston (80) generates a compression force on the pressure pad (76).

Abstract: A method is provided for locally creating an aperture in a metal layer that is formed above a base wafer having at least one lateral mark provided in its peripheral edge and at least one surface mark provided at a point on its surface. Coordinates of a starting position of a tool with respect to the peripheral edge and the lateral mark are found, and coordinates of the position of the surface mark with respect to the starting position of the tool are calculated so as to determine a course to be followed by the tool from the starting position to a working position above the surface mark. The tool is moved to the working position and activated so as to etch the metal layer and create the aperture in the metal layer above the surface mark. Also provided is a device for locally creating an aperture in a metal layer that is formed above a base wafer.

Abstract: A milling, drilling, and grinding spindle is provided to practically use the space between bearings. The spindle comprises a clamping chuck and a release unit for tensioning and releasing the clamping chuck. The tensioning and releasing is performed for exchanging a tool to be applied in each case. The release unit viewed in the longitudinal direction of the tool spindle is disposed between the clamping chuck and a drive of a shaft, and in particular between bearings of the shaft. The spindle may be motor or belt driven. The release unit may be formed by an integrated pneumatic or hydraulic cylinder and a connecting rod, which can be displaced by means of the cylinder.