SU935002A1

SU935002A1 - Knife for machine cutting of trees

Info

Publication number: SU935002A1
Application number: SU802961864A
Authority: SU
Inventors: Владислав Степанович Литкевич; Абрам Соломонович Залкинд; Николай Николаевич Горбачев
Priority date: 1980-07-21
Filing date: 1980-07-21
Publication date: 1982-06-15

Description

(54) НОЖ ДЛЯ МАШИННОГО СРЕЗАНИЯ ДЕРЕВЬЕВ(54) KNIFE FOR MACHINE CUTTING TREES

1one

Изобретение относитс к срезающим устройствам лесозаготовительных машин и может быть использовано в лесной промышленности .The invention relates to cutting devices for forest machines and can be used in the forest industry.

Известен нож дл машинного срезани деревьев, включающий разъемный корпус из двух металлических листов со сквозными пазами и режущий венец, выполненный со съемными резца.ми-втулками, закрепленными на оправках, устаьг чтенными между листами корпуса 1.A known knife for machine cutting of trees, comprising a detachable body of two metal sheets with through grooves and a cutting crown, made with removable cutters. These are bushings mounted on mandrels mounted between the sheets of body 1.

Недостатками этого ножа вл ютс значительные усили резани за счет прессовани стружки, срезаемой наружной кромкой резца-втулки и затем проход щей через внутреннюю полость меньшего диаметра, а также сложность в изготовлении и в эксплуатации.The disadvantages of this knife are significant cutting forces due to the pressing of chips, cut by the outer edge of the cutter-bushing and then passing through the inner cavity of a smaller diameter, as well as difficulty in manufacturing and operation.

Известен также нож дл машинного срезани деревьев, включающий корпус, образованный двум листами режущий венец, имеющий вставные зубь и полость дл отвода стружки 2.Also known is a machine cutter for cutting trees, comprising a body formed by two sheets of a cutting rim, having inserted teeth and a cavity for chip removal 2.

Наличие у этого ножа вставных зубьев с плоскими гран ми и трапецеидальной режущей кромкой упрощает их изготовление и эксплуатацию, в частности заточку. Однако при работе этого ножа требуютс значительные усили резани , в том числе за счет прессовани стружки при отводе ее от рсзцон в полость, внутренний размер которой пи высоте меньше ширины резца, а следовательно , пропила и стружки.The fact that this knife has false teeth with flat edges and a trapezoidal cutting edge simplifies their manufacture and operation, in particular sharpening. However, during the operation of this knife, considerable cutting forces are required, including by pressing the chips while withdrawing them from the cavity into the cavity, the internal dimension of which is pi height less than the width of the cutter and, therefore, cut and chips.

5Цель изобретени - уменьшение усилий5The purpose of the invention is to reduce effort.

резани .cutting.

Цель достигаетс тем, что режущий венец дополнительно снабжен режущи.ми э.чемента .ми, которые выполнены в виде заточенных поочередно с противоположных сторон передних граней зубцов, а вставные зубь утоплены в режущем венце, кроме того, вставные четные зубь жестко соединены с корпусом, а нечетные вставные зубь снабжены выступами, а листы имеют пазы дл The goal is achieved by the fact that the cutting rim is additionally equipped with cutting elements of the e-stem, which are made in the form of the front edges of the teeth sharpened alternately on opposite sides, and the inserted teeth are recessed into the cutting rim, and the inserted even teeth are rigidly connected to the body, and the odd false teeth are provided with projections, and the sheets have grooves for

15 этих выступов.15 of these protrusions.

На фиг. 1 изображен нож дл 1мащипного срезани деревьев; на фиг. 2 - часть режущего венца (узел I на фиг. ; на фиг. 3 - сечение А-А на фиг. 2.FIG. 1 shows a knife for cutting one tree; in fig. 2 - part of the cutting rim (node I in Fig.; Fig. 3 - section A-A in Fig. 2.

Claims

20 A machine cutter for cutting trees includes a housing 1, a cutting crown of two metal sheets 2 and 3 forming a cavity for chip removal between them, and a series of inserted teeth 4 and 5. The front faces of teeth 6 and 7 are alternately sharpened on opposite sides and located on the outer edges of sheets 2 and 3, and the inserted teeth 4 and 5 are recessed behind the outer edges of sheets 2 and 3. All even-inserted false teeth 4 are elongated and rigidly connected to the housing 1, sheets 2 and 3 are attached to them with screws 8, and all odd false teeth 5 are made with protrusions 9, which fit Lena in response grooves sheets 2 and 3. The knife operates as follows. The tractor driver points the knife at the tree, then with the effort of the maschina slides it in. In this case, the teeth 6 and 7 of the cutting ring cut the wood, and the inserted teeth 4 and 5 cut it. The cuttings formed during cutting pass through the cavity between sheets 2 and 3 and are thrown out beyond the cutting rim. The positive effect is that, due to the inclusion of the outer edges of the sheets as scoring elements, and the false teeth as shear, the pressing of the chips as it passes through the cavity between the sheets is prevented. This provides a 10% reduction in the tangential cutting force. 1. Clamp for tree cutting, comprising a body formed by two sheets of a cutting ring having false teeth and a chip discharge cavity, characterized in that, in order to reduce cutting forces, the cutting ring additionally equipped with cutting elements, which are made in the form of sharpened alternately from opposite sides of the front edges of the teeth, and the insert teeth are recessed into the cutting ring. 2. A knife according to Claim 1, characterized in that the even inserted teeth are rigidly connected to the housing. 3. Knife on PP. 1 and 2, characterized in that the odd false teeth are provided with protrusions, and the sheets have grooves for these protrusions. Sources of information taken into account in the examination 1. USSR author's certificate number 192541, cl. A 01 G 23/08, 1965.

2. USSR author's certificate N ° 141697, cl. A 01 G 23/08, 1961 (prototype).

/ 1-у1 is turned

Fig.Z