| 摘要 |
Apparatus and method of machining a long wooden rod of square cross-section, of selected dimension, so as to provide a multi-link chain of separate inter-linked oval links. In its simplest form, the machine involves a single rotating cutter assembly, which includes two thin rectangular blades spaced apart, and contiguous with a central smaller radius portion, which has a concave contour. In the preferred arrangement four cutters are applied with the plane of each cutter coincident with a diagonal plane of the square rod and positioned over one corner, so as to provide a wooden cross with each arm rounded on its outer edge. By applying the cutters in such a way each of the links in one arm of the cross are cut to a selected length and rounded. By applying the cutters to each corner of the rod, a plurality of links lying in perpendicular planes are provided, which links are attached to each other at their ends. By inserting a small diameter high-speed milling cutter into the space between the two links and rotating the axis of the cutter in a plane perpendicular to the axis of the rod, the links are separated.
|
