RU1781037C - Wood-working machine shaft for carrying cutters - Google Patents

Abstract

The invention relates to wood-cutting tools and can be used in the woodworking industry. Essence: the knife shaft contains a housing 1 with flanges 2. longitudinal wedges 3, inserts 4, clamps 5, knives 6, screws 7. springs 8 and permanent magnets 8 9. When the screws 7 are screwed, the longitudinal wedges 3 move along the axis of the housing 1, and the screw heads 7 abut against the flanges 2 of the housing 1. The knives 6 located between the inserts 4 and the wedges 3 are pressed by the wedges against the inserts. In addition, the knives are kept from being displaced by the permanent magnets 9. The clamps 5, under the action of the springs 8, abut against the protrusions of the inserts 4 and are held in the extreme position. The knives 6 are set in such a way that they do not overlap the edges of the clamps 5. When the shaft rotates, the clamps 5 press the processing block on the machine under the action of centrifugal forces, and the clamps 5 follow the cutting knives 6. 4 il. Ё 1 00 o 00

Description

The invention relates to wood-cutting tools and can be used in the woodworking industry.

The aim of the invention is to reduce noise and increase productivity.

On Fig, 1 presents a General view of the knife shaft; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 is a view along arrow B in FIG. 2; in FIG. 4 is a section BB in FIG. 2.

The blade shaft contains a housing 1 with flanges 2, a longitudinal wedge 3, inserts 4, clamps 5, knives 6. screws 7, springs 8, permanent magnets 9.

Inserts 4, longitudinal wedges 3 are placed in the grooves of the housing 1, the guiding protrusions of which enter the grooves on the vertical walls of the housing, the knives 6 located between the inserts and the wedges. Clips 5 are located in the openings of the inserts, and the springs 8 are installed under the springs. The screws 7 are screwed into the end threaded holes of the wedges so that their heads abut against the flanges 2 of the housing. Permanent magnets 9 are placed in blind holes of the wedges. The device operates as follows.

When the screws 7 are screwed in, the longitudinal wedges 3 move along the axis of the housing, and the screw heads abut against the flanges 2 of the shaft 1. The knives 6. located between the inserts 4 and the wedges 3 are pressed by the wedges to the inserts. In addition, the knives are kept from being displaced by permanent magnets 9. The clamps 5 under the action of the springs 8 abut against the protrusions of the inserts 4 and

held in extreme position. Knives 6 are set in such a way that they do not overlap the edges of the clamps 5.

When the shaft rotates, the clamps 5, under the action of centrifugal forces, press the bar processing on the machine, and the clamps follow the cutting knives.

A reduction in the noise level during operation of the knife shaft is achieved by increasing the reliability of the clamp of the bar against the table of the machine, as well as by eliminating open grooves in the grooves on the outer cylindrical surface of the shaft.

An increase in the productivity of processing with a knife shaft is achieved by increasing the number of knives on the knife shaft. This is possible by using longitudinal wedges. In this case, the width of the grooves on the knife shaft is reduced.

Claims (1)

The claims Knife shaft of a woodworking machine, including a housing with grooves in which knives are installed using wedges and screws, characterized in that, in order to reduce noise and increase productivity, the housing is made with flanges, and the grooves have longitudinal ledges matching the ledges made on wedge x, in addition, in the wedge x there are longitudinal grooves in which permanent magnets are installed, and inserts equipped with spring-loaded clamps are installed in the grooves of the case, and threaded holes are made in the ends of the wedges For screws in contact with the flanges of the housing. i FIG.