METHOD OF FORMING RECTANGULAR GROOVE FOR MOUNTING OPEN SHED IN WOODEN STRUCTURE MEMBERS JOINED BY SAID GROOVE AND MILLING CUTTER FOR WORKING RECTANGULAR GROOVE Russian patent published in 2006 - IPC B27G13/00 

FIELD: wood working, namely manufacture of door blocks, windows, furniture by mounting or joining two or several members of wooden structure by means of open shed mounted in grooves.

SUBSTANCE: method comprises steps of preliminarily assembling wooden structure members by but joining and temporarily rigidly bonding them; in joining zone at side of plane for mounting open shed marking out length for working rectangular groove equal to length of open shed; simultaneously forming rectangular groove in body of joined members of wooden structure by successively drilling openings in range of marked length by means of helical milling cutter with cutting end faces sharpened by angle 120° for forming two equal-angle mutually opposite dents; placing center of milling cutter at drilling each next opening along joining line of wooden structure members; then smoothing irregularities of drilled openings by means of milling cutter due to drawing it along length of groove; using milling cutter whose diameter is equal to thickness of open shed; milling by depth equal to width of shed cleat. Milling cutter for working rectangular groove has helical working lateral faces forming helical duct and cutting end flat faces. Cutting end faces of milling cutter are sharpened by angle 120° for forming two equal-angle mutually opposite dents providing possibility for working by milling cutter at drilling cylindrical openings. At drawing milling cutter along length of groove, right angle is formed in bottom of groove by means of apexes of said mutually opposite dents.

EFFECT: improved reliability of joining members of wooden structure with use of rectangular groove worked according to invention.

2 cl, 6 dwg, 1 ex