SU870124A1 - Wood-sawing arrangement - Google Patents

Description

one

The invention relates to devices for sawing wood and wood materials and can be used in the timber and woodworking industry.

A circular saw is known, comprising a tooth with an upper cutting portion and a lower stabilizing portion.

A disadvantage of the known construction is the fragility of the incisors and the low quality of processing.

It is also known a device for sawing wood, comprising a body and teeth made of hard alloy with cutting and cleaning edges 23.

A disadvantage of the known device lies in the complex sharpening and high consumption of solid alloy.

The aim of the invention is to simplify sharpening and reduce the consumption of cemented carbide.

This is achieved by the fact that each tooth has a cutting and cleaning chrome.

ki, with the cleaning edges located on the lateral edges of the tooth.

FIG. 1 shows a general view of a device for sawing wood; in fig. 2 - section A-A of FIG. I; in fig. 3 - view B of FIG. one; in fig. 4 view In FIG. one.

The device includes a housing I, on which are fixed, for example, with the help of 10 electro-contact soldering, a tooth 2 of hard alloy, for example, a VK type. Tooth 2 contains cutting edge 3 and cleaning edges 4, as well as channels 5 for removal of chips-sawdust

Claims (2)

ts from cleaning edges 4, front 6, rear 7 and side 8 edges with cutting edge 3 and front 9 and rear 10 edges with cleaning edges 4 located on lateral edges 8 x 8. In addition, faces 8 and 10 are rotated relative to The plane of rotation of the saw is characterized by angles - X ,, An and 4. 3 Face 8 has a front angle, wiping edges 4 - front corners fn Angle of sharpening of the cutting edge Jb, angle of sharpening of wiping edges The device can be sharpened on the front or rear edges, and also provide for the presence of oblique sharpening on the front and rear edges. The device for sawing wood works as follows. Cutting edges 3 during the rotation of the saw casing 1 (saw blade) and thrust of the workpiece preliminarily form a kerf, which does not have a high surface quality. The sawdust produced in this way is placed in the interdental cavity 11 and removed last from the saw. Cleansing edges 4 cut off the kinematic irregularities left after preliminary formation. Since the cleaning edges 4 lie in parallel planes, they ensure the required quality of the cutting surfaces, forming them. The sawdust chips cut by the edges 4 are removed through channels 5 to the interdental cavity 11 of the next tooth and with it from the cut. The formation of the edges of the teeth is carried out by grinding the excess material and includes the following operations: grinding on the front edge of the 8 tooth; grinding on the back of the 10 tooth; sharpening on the side edges 8 with a cutting edge 44 ke 3 with the simultaneous formation of the front face 9 with cleaning edges A; the formation of channel 5 for removal of chips-sawdust (at certain angles of X the presence of channel 5 is not necessary); sharpening the rear edges 10 with cleaning edges 4. The use of a device for sawing wood reduces the need for hard alloy by half by eliminating isolated cleaning teeth. This is associated with a reduction in the laboriousness of processing, the consumption of abrasive materials at least twice and the simplification of sharpening the teeth. An apparatus for sawing wood, comprising a body and teeth made of hard alloy with cutting and cleaning edges, characterized in that, in order to simplify sharpening and reduce the consumption of hard alloy, each tooth has cutting and cleaning edges, with cleaning edges located on the side edges. gran x tooth. Sources of information taken into account in the examination}. US Patent No. 3971 OF, cl. B 27 B 33/12, 1976. 2. US patent 3563286, cl. B 27 V 33/08, 1971 (prototype). ffoffS ffe. fff.J