A sawmill comprising first and second clamp members for clampingly engaging opposite sides of a log or log cant. A trolley includes the second clamp member. For moving the trolley cross-wise of the sawmill base, a threaded rotatable rod, to which a handle is attached, extends cross-wise of the base. The trolley includes a pair of walls which have a pair of aligned vertically oblong apertures respectively for receiving the rod. A half nut is fixedly attached to a bottom of one of the apertures and has threads which mate with threads on the rod so that the rod can threadedly engage the half nut. The apertures are sized such that the trolley can be tilted so that the threads of the rod and the half nut can be disengaged and the trolley slid along the rod to an approximate position for clampingly engaging the second clamp member to the log or log cant, then, with the trolley positioned upright and the threads of the rod and the half nut re-engaged, the handle can be turned to apply clamping force by the second clamp member to the log or log cant.

Disclosed herein is a machine for cutting nozzles of reactor vessels. The machine for cutting nozzles of reactor vessels comprises a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle and having a saw blade part having different contact areas to cut the nozzle, a drive unit providing the saw blade part with rotary power, and a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade part to suck foreign substances generated when the nozzle is cut by the saw blade part, wherein the foreign substance suction unit sucks the foreign substances by approaching an outer peripheral surface of the nozzle when the saw blade part moves in a cutting direction of the nozzle.

Disclosed herein is a machine for cutting nozzles of reactor vessels. The machine for cutting nozzles of reactor vessels comprises a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle and having a saw blade part having different contact areas to cut the nozzle, a drive unit providing the saw blade part with rotary power, and a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade part to suck foreign substances generated when the nozzle is cut by the saw blade part, wherein the foreign substance suction unit sucks the foreign substances by approaching an outer peripheral surface of the nozzle when the saw blade part moves in a cutting direction of the nozzle.

A band saw is disclosed that includes a frame, a guide wheel, and a blade disposed around the guide wheel. A guide wheel chassis can be movably disposed on the frame, the guide wheel rotatably disposed on the guide wheel chassis. The band saw can include a blade tension adjustment assembly including a tensioning motor, wherein operation of the tensioning motor produces movement of the guide wheel chassis and the guide wheel relative to the frame to adjust the tension of the blade. A tension gauge can be positioned to determine a tension in the blade, and a controller can be communicated with the tensioning motor and the tension gauge, the controller operable to receive tension data from the tension gauge and control operation of the tensioning motor based on the tension data to control the tension of the blade.

A band saw is disclosed that includes a frame, a guide wheel, and a blade disposed around the guide wheel. A guide wheel chassis can be movably disposed on the frame, the guide wheel rotatably disposed on the guide wheel chassis. The band saw can include a blade tension adjustment assembly including a tensioning motor, wherein operation of the tensioning motor produces movement of the guide wheel chassis and the guide wheel relative to the frame to adjust the tension of the blade. A tension gauge can be positioned to determine a tension in the blade, and a controller can be communicated with the tensioning motor and the tension gauge, the controller operable to receive tension data from the tension gauge and control operation of the tensioning motor based on the tension data to control the tension of the blade.

Disclosed herein is a machine for cutting nozzles of reactor vessels. The machine for cutting nozzles of reactor vessels comprises a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle and having a saw blade part having different contact areas to cut the nozzle, a drive unit providing the saw blade part with rotary power, and a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade part to suck foreign substances generated when the nozzle is cut by the saw blade part, wherein the foreign substance suction unit sucks the foreign substances by approaching an outer peripheral surface of the nozzle when the saw blade part moves in a cutting direction of the nozzle.

In a band saw that is provided with a tension adjustment mechanism in which tension for an band saw blade can be adjusted, first and second wheel support shafts are provided in paired first and second wheel support portions, respectively, such that the first support shaft is parallel to the second support shaft. The first wheel support portion is configured to be movable in a direction in which a straight line extends, the straight line being perpendicular to both the first and second wheel support shafts. A first support is provided at a first end of the first wheel support portion, and a second support is provided at a second end of the first wheel support portion. Furthermore, an intermediate support is provided between the first support and the second support. A first load and a second load are configured to be applied to the second support and the intermediate support, respectively, such that the first load and the second load are parallel to the wheel support shaft and the direction of the first load is opposite to that of the second load.

In a band saw that is provided with a tension adjustment mechanism in which tension for an band saw blade can be adjusted, first and second wheel support shafts are provided in paired first and second wheel support portions, respectively, such that the first support shaft is parallel to the second support shaft. The first wheel support portion is configured to be movable in a direction in which a straight line extends, the straight line being perpendicular to both the first and second wheel support shafts. A first support is provided at a first end of the first wheel support portion, and a second support is provided at a second end of the first wheel support portion. Furthermore, an intermediate support is provided between the first support and the second support. A first load and a second load are configured to be applied to the second support and the intermediate support, respectively, such that the first load and the second load are parallel to the wheel support shaft and the direction of the first load is opposite to that of the second load.

Method and device for guiding a tool in a recurring application of a product moved along an X-axis, wherein the tool is mounted on the Z-carriage of a cross guide and is moved therewith along the Z-axis standing perpendicular on the X-axis, wherein the Z-carriage is mounted on the X-carriage of the cross guide, the guide of which is mounted along the X-axis in a base plane, wherein the X-carriage is driven with an X-drive, wherein the Z-carriage is driven by a Z-drive, which is held stationary in the base plane and has a traction means driven by a first servo motor provided for the drive of the Z-carriage, which is driven from the base plane on the movable Z-carriage.

Method and device for guiding a tool in a recurring application of a product moved along an X-axis, wherein the tool is mounted on the Z-carriage of a cross guide and is moved therewith along the Z-axis standing perpendicular on the X-axis, wherein the Z-carriage is mounted on the X-carriage of the cross guide, the guide of which is mounted along the X-axis in a base plane, wherein the X-carriage is driven with an X-drive, wherein the Z-carriage is driven by a Z-drive, which is held stationary in the base plane and has a traction means driven by a first servo motor provided for the drive of the Z-carriage, which is driven from the base plane on the movable Z-carriage.