SU1722821A1 - Milling head - Google Patents

Abstract

The invention relates to the forest and woodworking industry. The purpose of the invention is to improve the quality of processing and reduce the loss of wood. The milling head 1 consists of removable scoring incisors 5, which have a main one. 6 and additional 7 cutting edges, and cutting knives 8. The milling head 1 rotates the wood with removable notching cutters 5. At first, the main edge 6 of the notching cutter 5 is cut, which allows to get the length of technological chips, then the additional edge of the notching cutter 5, which has a length of not more than 6 mm, which makes it possible to form a chip thickness. At the end of the additional edge 7 of the incising cutter 5, the cutting knife 8 comes into operation, which processes the notched wood into process chips. After passing the cutting knife 8 of the first pair of incisors, a second pair of incisors enter the working area — an incision is made in the main edge 6 of the incision cutter 5 for the chip length, then an additional edge 7 of the incision cutter 5 passes and the main knife 8: 1 works. f-ly, 3 ill. THX

Description

The invention relates to the forest and woodworking industry.

The goal is to improve the quality of processing and reduce the loss of wood.

FIG. 1 shows a milling head, general view; in fig. 2 is a section A-A in FIG. 1 (undercut); in fig. 3 - working scheme of milling heads.

The milling head 1 consists of a front end plane 2 and an angled conical surface 3 intersected by the front end plane. At the periphery of the end plane, slits 4 are made to fasten four removable notching cutters 5, which have a main 6 and an additional 7 cutting edges to form

respectively, the length and thickness of the technological chips.

On the tapered surface 3, four cutting knives 8 are positioned so that the edge of the additional edge 7 of the removable notching cutter 5 is aligned with the edge of the cutting edge 9 of the cutting knives 8. Removable notching cutters 5 are installed on the end plane 2 with an undercut of 3-4 ° (section A - A in Fig. 1) with respect to the surface to be treated, which reduces the incision force.

Milling head works as follows.

When the motor is turned on, the milling heads 1 drive a rotary motion, then the timber 10 is fed to the milling heads 1 and

Wood is notched with removable notching cutters 5. First, the main edge b of notching cutter 5 is cut, which makes it possible to obtain a length of process chips, then an additional edge 7 of notching cutter 5 goes, which has a length of no more than 6 mm, which makes it possible to form a chip thickness. Upon completion of the incision of the additional edge 7 of the incision cut 5, the cutting knife 8 comes into operation, which processes the incised wood into process chips. As soon as the cutting knife 8 of the first pair of incisors passes, a second pair of incisors enter the working area: an incision is made in the main edge 6 of the incision cutter 5 for the length of wood chips, then an additional edge 7 of the incision cutter 5 passes and the main knife 8 comes into operation.

Claims (2)

1. A milling head comprising a conical body with knives on its forming surface, characterized in that, in order to improve the quality of processing and reduce wood losses, notching cutters are installed on the face surface of the body, each having main and additional cutting edges. the cutter is installed in front of the corresponding knife so that the end of the additional cutting edge of the incising cutter contacts the start of the cutting edge of the knife at the point where the forming surface of the conical of housing in face. 2. The head of claim 1, wherein the notching cutters are installed with respect to the face surface of the housing with an angle of undercut of at least 3 °. Figz