SU1240593A1 - Cutting blade of milling and bar-shaping machine - Google Patents

Description

The invention relates to the wood processing industry, in particular to equipment for grinding wood.

The purpose of the invention is to demonstrate the quality of the technological chips, the longitude of eternity and the maintainability of the knife.

FIG. 1 shows a knife, a general view; in fig. 2 is the same, front view in FIG. 3 - the same, side view.

The cutting knife contains a plate 1 with long cutting edges 2 and a separate plate 3 with pyramid-shaped protrusions 4 having short cutting edges 5 and a notch plane 6

The plate 3 with its lateral vertical plane 7 adjoins the lateral vertical plane 8 of the plate 1 and forms a cutting knife with a connector plane 9 that runs parallel to the lateral 1 plane 10 of the knife through the intersection line of plane 6 of the notch of the pyramid-shaped protrusion 4 with the front surface 11 of the long edges 2. A short cutting edge 5 is formed by the second inclined side plane of the knife 12 and the notch plane 6 intersecting with it adjacent to the front surface 11 of the long cutting edge 2.

FIG. 1-3 shows a variant of the cutting knife with a pair of short and a pair of long cutting edges.

There are three options for the mutual arrangement of the plate 1 with long cutting edges 2 and the plate 3 with short cutting edges 5: the first (as in the well-known knife design) - cutting edges 2 and 5 lie in one plane of the second - the plate 1 is moved forward along the plane 9 of the connector, long cutting edge 2 leads short 5; third - plas10

"five

20

25

thirty

five

0

five

Tina 1 is moved along the plane 9 of the connector backward, the cutting edge 3 is short ahead of the long 2.

The predetermined mutual arrangement of the cutting knife plates 1 and 3 is ensured by their appropriate fastening to the holder (not shown).

The cutting knife of the milling cannon machine works in the following way.

The length of the cutting edge 2 cuts the wood in the transverse direction and removes a layer of wood equal to the thickness of the processing chips, and a short cutting edge 5 cuts this layer in the transverse-end direction, forming the length of the chips. The dimensions of the chips are determined by the dimensions of the blade plates, the design and kinematics of the freesaw canning machines.

When the mutual arrangement of the plates in the first embodiment is long 2 and short 5 cutting edges form chips in the cross section at the same time; in the second, first, the cutting edge 2 cuts and lifts a layer of wood of a given thickness, after which the short cutting edge 5 cuts it in a free state, the condition of the short cutting edge 5 improves, slows down its wear, reduces energy consumption cutting (recommended when treating non-frozen wood with increased moisture content (freshly brushed), for the third - short cutting edge 5 first cuts the wood layer to a predetermined thickness, after which the long cutting edge 2 cuts this layer, The work of the short cutting edge deteriorates, energy consumption increases (recommended when processing frozen and dry wood to prevent chipping of wood particles and improving the quality and fractional composition of chips).

Claims (1)

CUTTING KNIFE OF THE MILLING AND CUTTING MACHINE, including a long cutting edge bounded on one side by the side surface of the knife, and on the other hand, by a pyramid-shaped protrusion of the knife, the short cutting edge of which is formed by the inclined surface of the knife and the cutting plane intersecting with it, adjacent to the front surface of the long cutting edges, characterized in that, in order to improve the quality of the technological chips, durability and maintainability of the knife, it is made composite - of two plates with the possibility of their mutual re ulirovochnogo displacement connector according to a plane extending parallel to the side surface of the blade plane through the line of intersection of the recess § pyramid-like projections from the front surface of the long cutting edge. Figure 1