| 摘要 |
1,189,179. Woodworking. ROCKWELL MFG. CO. 13 Dec., 1967 [22 Dec., 1966], No. 56747/67. Heading B5L. A power driven router comprises a base 70 having a planar bottom surface for contacting the work and guiding a cutter relative thereto and having a nose defined by a pair of converging edges 93, 94 of the base for providing continuous support of the router while the router is transferred from one to the other of two coplanar surfaces 101, 101a means 50 for rotatably supporting a cutter 82 on the base at the nose thereof, and means 30 for rotating the cutter. A housing 10 is secured to the base by screws 21 and is formed with a pair of seats, one of which receives a shoulder 41 of an electric motor 30 and the other of which receives bearings 83, 85 rotatably supporting a tubular spindle 67 having a chuck 75 at its lower end for holding the cutter 82. A toothed belt 57 transmits the drive from the motor to the spindle and the cutter extends through a hole 61 in the base at the nose thereof which is formed by the converging edges 93, 94, the edges making an angle greater than 90 and preferably 100 degrees. The upper end of the spindle 67 receives a screw 81 which determines the axial position of the cutter. For use in trimming the edges of laminates 101, 101a on the upper edges of walls 103 of a sinkboard installation, a guide assembly is fitted below the surface of the base 70. The assembly consists of a shoe 115 adjustable along a guideway in a block 111 mounted on a pivot 125 on the base. A projecting boss 133 is formed on each end of the shoe, the ends being of different radii corresponding to one or other of a pair of cutters which can be mounted in the spindle. With the cutter removed, an aligning rod 129 is positioned in the spindle and has a recess 131 for engaging the boss of the selected end to align it with the spindle axis, the shoe and block then being secured in the adjusted position: when the cutter replaces the rod, it is thereby aligned with the end so that with the end engaging the surface of a wall 103, the cutter trims the protruding part 101b of the laminate, the shape of the base assisting in the transferring of the machine from one wall to the other. |
