SU44337A1 - Cutting head in wood drilling machines - Google Patents

Description

In the proposed eeztsovy head in machine tools for deep drilling of wood, a screw thread is used, corresponding to the diameter of the hole to be drilled and having cutting edges on the backs of a conventional head provided with a transverse notch. Said screw thread serves, when screwed into the wood, of a log to inform it of the feed movement.

In FIG. 1 is a side view of the incisal head; FIG. 2 is the same with a partial section of the head itself and the pipe on which the head is mounted; FIG. 3-head view from above.

The proposed cutting head / (FIG.), Machined from a single block, is connected with the main, receiving rotation, screw-cutting pipe 3 5. The head 7 is provided with a centering part 7 and screw-cutting b, having cutting edges 7 / on the backs of the transverse head notches . The pipe 3, on which the head 7 is fastened, is provided with rings 2 fixed on the pipe 3 with a tongue 8 and a rivet 9.

When the cutting head is in operation, part 7 initially centers the head on the log to be drilled before entering it

cutting 6, the diameter of which corresponds to the diameter of the recessed hole. The cutting b is screwed into the wood and informs the log of the feed movement while the cutting edges 77 drill a hole. The rings 2 spaced apart from each other are designed to hold the head 7 and the pipe 3 on the geometrical axis of the drilling and eliminate their distortions.

The chips produced during drilling are removed by the screw 4 located inside the pipe 3.

The subject matter of the invention.

A cutting head in wood drilling machines, characterized by using on its part, connected to the main receiving pipe 3, rotation screw pipe b, corresponding to the diameter of the hole having 7 cutting edges 7 / on the backs of a conventional cross-cut head and serving to feed the log when screwing it into it.

to the author's testimony of DK Zhurvovich

No. 44337