SU1391884A1 - Disc tool - Google Patents

Description

(21) 4020238 / 29-15

(22) 12.02.86

(46) 04/30/88. Bul Number 16

(71) Lviv Forestry Institute

(72) C. I. Beloshitsky, S. I. Gritsishin, V. S. Dzhigirey, and V. I. Myts

(53) 674.053: 621.934 (088.8)

(56) USSR Copyright Certificate No. 445569, cl. At 27 May 33/08, 1973.

(54) DISK TOOL

(57) The invention relates to the woodworking industry and can be used in wood-cutting tools when sawing wood. The purpose of the invention is to improve the quality of cutting, reducing metal intensity and noise level. Between the cutting disks 1 and 2 there is a cutting element 3 made of abrasive cutters connected by a binder, and the cutting edges of the cutting disks 2 and 3 are made in the form of an external continuous ring platform. 1 ill., 1 Cp | f-ly.

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The invention relates to the woodworking industry and can be used in wood cutting tools for sawing wood and wood materials, mainly chipboard.

The purpose of the invention is to improve the quality of cutting, reducing metal intensity and noise level.

The drawing shows the proposed tool.

The disk tool consists of scoring disks 1 and 2, between which the cutting element 3 is located, consisting of abrasive grains arranged in a single layer and having the same grain.

The disks 1 and 2 and the abrasive grains of the cutting element 3 are glued together with the help of the binder 4.

Example. Cutting discs 1 and 2 are made with a thickness of Oj2 - 0.4 mm5 with a diameter up to 260 mm, the space between them is filled with abrasive grains, for example, silicon carbide black with a grain size no. 100 of grade 55 ° (grain size about 1 mm) and epoxy resin mark -20 with the addition of polyethylene propylene hardener 8-10% by weight of resin. Resins are taken in turn, 9-15.5% by weight of abrasive.

For softwood, a higher percentage of resin and hardener is assigned, for hardwood and chipboard, a smaller percentage.

The process of curing the molding material between the disks 1 and 2 is carried out in two stages; The first is carried out in a press under the pressure of 2-3 atm.

100 ° С from 2 to 3 h, the second - at

at

180 C, at the same pressure for 0.5-1 h.

When executing a disk tool of larger diameters than 260 mm, the thickness of the scoring discs are assigned more.

The proposed disk tool works as follows.

Cutting discs 1 and 2, with their cutting edges, form the surface of the cut, inserting material into the sawn-six, and cutting through its fibers. The abrasive grains of the cutting element 3 are selected from the parallel grooves formed in the process. In this case, the cutting discs 1 and 2 play the role of cutting the teeth, and the abrasive grains of the cutting element 3 play the role of cutting.

The cutting edge of the scoring discs 1 and 2 forms a continuous annular platform with a width B parallel to the plane of the scoring discs 1 and 2 and a height of S ". The cutting edge is sharpened at an angle close to 28 °.

Such an implementation of the disk tool provides a high quality surface cut, eliminating subsequent processing, reduces the intensity and noise level.

When blunting a tool, its lateral sharpening is performed before restoration on site B.

Formula of the invention

Claims (2)

1. A disk tool that includes two cutting discs with one-sided sharpening and a cutting element placed between them, characterized in that, in order to improve the cut quality, reduce metal intensity and noise level, the cutting element is made of abrasive grains interconnected and with scoring disks, the cutting edges of which are made in the form of an external continuous annular platform parallel to the planes of the scoring disks, and the tops of the cutting edges of the scoring disks and the cutting element are split in a single line parallel to the axis of rotation of the tool. 2. A tool according to claim 1, characterized in that the abrasive grains are arranged in the same row and have the same grit.