There is provided a guide dresser for milling a saw guide, the guide dresser comprising first and second cutter assemblies that are slidably mounted on a rail or slide system so as to be adjustable, in operation, between an open position and a closed position. There is also provided cutter heads and methods for milling a saw guide.

This invention relates to a weld cutting machine, comprising a first cutting jaw part (4) and a second cutting jaw part (5), a base frame (500) having fixedly attached thereto said second cutting jaw part (5), a power unit and a transmission mechanism (3), wherein said power unit is connected to said transmission mechanism (3) to arrange for movement of at least one of said cutting jaw parts (4, 5), and wherein connecting members are arranged to enable said at least one cutting jaw part (4, 5) to move in a guided manner relative said second cutting jaw part (5), wherein said power unit is an electric motor (2) and that said connecting members include at least two rods (6), each rod (6) being arranged with at least one set of threads (63, 64) arranged to transfer torque applied via said transmission mechanism (3) to said rods (6) to provide linear movement of said at least one cutting jaw part (4, 5), wherein said transmission mechanism (3) includes at least two parts (31, 32) a first reduction transmission (31) arranged to reduce the incoming rotational speed from the electric motor (2) and a second dividing transmission (32) arranged to transmit the outgoing torque from said first reduction transmission (31) synchronously to both of said at least two rods (6).

A motion mechanism moves a workpiece relative to a cutting tool with a convex cutting edge. A controller controls the relative movement between the workpiece and the cutting tool by the motion mechanism and an orientation of the cutting tool. The controller intermittently or continuously changes the orientation of the cutting tool to cause a part of the cutting edge that has not been used for cutting to form a finished surface.

A coping cut machine can include a workpiece platform having a support surface for receiving a workpiece support surface. The coping cut machine can have a rotary cutting device supporting at least one knife, and at least one workpiece alignment member supported by the workpiece platform for aligning a workpiece supported by the workpiece platform relative to the rotary cutting device. In response to sliding the workpiece along the at least one workpiece alignment member and during rotation of the rotary cutting device, the at least one knife operates to perform a coping cut on an end of the workpiece. The rotary cutting device can optionally be operated bi-directionally to cut either end of a workpiece. The rotary cutting device can comprise a modular rotary cutting assembly having a keyed profile portion received in a keyed profile aperture of a drive wheel, and that is removable from the coping cut machine.

A cold-weld burr removal system is disclosed according to various embodiments. The cold-weld burr removal system can include a clamping block having a clamping passage that extends along an alignment axis, and a removal block having a guide passage alignment axis centered about the alignment axis. The removal block can define a burr receiving chamber. The system also can include a cutting head insert having a cutting portion and a cutting passage. The cutting head insert can removably attach to the removal block and the cutting portion can protrude into the burr receiving chamber. The system can include a linear actuator that connects the clamping block to the removal block. The linear actuator can move the removal block in a direction along the alignment axis to increase a separation distance between the clamping block and the removal block when a linear actuation initiator initiates movement of the linear actuator.

A tool (10) includes a base (12) made of contact and projection woven, metallic, compression screens (16, 18) secured to each other. A plurality of linear projections (30) extend away from the base (12). A shortest distance between adjacent linear projections (30) may be between about 20 m and about 20 mm. The tool (10) is forced upon an uncompressed galvanic pellicle (52) so that the projections (30) compress and bond connected areas (56) of the pellicle (52) to a conductive surface (54) to form an electrode (50).

A cold-weld burr removal system is disclosed according to various embodiments. The cold-weld burr removal system can include a clamping block having a clamping passage that extends along an alignment axis, and a removal block having a guide passage alignment axis centered about the alignment axis. The removal block can define a burr receiving chamber. The system also can include a cutting head insert having a cutting portion and a cutting passage. The cutting head insert can removably attach to the removal block and the cutting portion can protrude into the burr receiving chamber. The system can include a linear actuator that connects the clamping block to the removal block. The linear actuator can move the removal block in a direction along the alignment axis to increase a separation distance between the clamping block and the removal block when a linear actuation initiator initiates movement of the linear actuator.

A weld cutting machine having a first cutting jaw part (4) and a second cutting jaw part (5), a base frame (500) having fixedly attached thereto the second cutting jaw part (5), a power unit and a transmission mechanism (3). The power unit is connected to the transmission mechanism (3) to arrange for movement of at least one of the first cutting jaw part or the second cutting jaw part (4, 5).

A welding unit for welding rails of a track includes a shearing device for removing a weld bead. The shearing device includes a head part having a shearing edge and two side parts which are pivotable towards one another and have a shearing edge. A rail base section to be applied to a rail base is associated with each side part. The rail base sections each include an end region facing towards each another having a tooth system for a form-locking connection which is effective in a longitudinal direction of the rail after the two side parts have been applied to the rail.

A method and a device for facing surfaces of workpieces, in particular made of light metal alloys, in which a cutting tool is moved in a feed direction relative to the surface and removes material at a defined thickness by cutting, wherein the cutting tool is moved in a defined feed direction with one or more cutter bars oriented substantially parallel to the surface. The cutter bars are always set at an angle of <90 but >0 with respect to the feed direction. In this way, surfaces with high surface quality can be produced, in particular for workpieces made of light metal, with cost-effective machining parameters.