SU510139A3 - Cutting head - Google Patents

Description

(54) CUTTING HEAD OF THE CORNING MACHINE

one

The invention relates to cutting heads of deblocking machines and can be used in the forest industry.

Known cutting heads koropodirochnyh machines, including reinforced on the front side of the rotor flat ring with knives located around its circumference, having bearing surfaces.

However, cutting heads of this design do not prevent jamming and reinforce the structure.

The purpose of the invention is to eliminate these disadvantages.

For this, the cutting head is provided with guide elements fixed to the ring, mounted between the knives with a gap and having a bearing surface inclined towards the center of the ring.

FIG. I shows the cutting head, general view; in fig. 2 is a section along A-A in FIG. one; in fig. 3 - ring; general form; in fig. 4 is an annular blank for guiding elements, front view; .on FIG. 5 Same axial section.

The cutting head 1 is mounted on the rotor 2, on the front side of the peeling machine, and contains a flat ring 3 with cutting blades 4. Each knife. is fixed in a holder 5 fixed on the ring 3. The knife 4 is installed in the groove 6 of the holder 5 so that the knife edge-7 forms an angle Ot with respect to the plane of the ring. Each knife is made with a guiding element 8 located after the multiplier in the direction of rotation of the head and having a curvilinear bearing surface 9 which forms an angle. with respect to the plane of the ring, and this angle is equal to the angle-a formed by the cutting edge of the knife.

The cutting edge of the knife protrudes above the supporting surface 9 to a height corresponding to the thickness of the chips being removed. The guide element has a rim 10 and an end rim 11, with which it is attached to the ring 3. In this embodiment, the guide element does not generally come into contact with the knife and there is a space 12 between them, and in the direction of rotation the guide wing does not reach the next knife, there is a gap between them 13.

The cutting head can be provided with a slightly different guiding element 8 (Fig. 3), which also contains a curved support surface, but the element is made of a flat material along its entire length. The guide member is provided with a knife holder 5.

When a log is fed through a rotating rotor and when its knives are cut off especially thick sections, the log all the time passes close to the bearing surface of the guide elements so that it can move quickly forward, the movement of the log is fully controlled and uniform cutting knives. The chips, which are removed by the screws, are removed through the slots 13 between the blades and the guide elements and then ejected from the cutting head.

When the cutting head has only one knife, the guide element forms an almost closed circle, however, and a gap remains between the end of the wing and the knife.

The position of the knife can be adjusted in the groove with the help of adjustment screws 14

so that the difference in the height of the cutting edge of the knife with respect to the bearing surface of the guide element 9 can be changed to the required level in connection with the sharpening of the knife or changing the thickness of the chip

; The annular blank can be made of spliced material (Figs. 4 and 5), from which guide elements can be cut off of the required length (shown in dotted lines in the drawing), and the guide element can be cut from a ring-shaped blank of the corresponding cross section.

Claims (1)

Invention Formula The cutting head of the debarking machine includes a flat ring fixed on the front side of the rotor with knives located around its circumference and supporting surfaces, so that, in order to prevent seizure and hardening of the structure: it is reinforced on the ring guides mounted. between knives with a gap and having a bearing surface inclined towards the center of the ring. f (-A IG