SU704785A1 - Knife carrying shaft - Google Patents

Description

(54) KNIFE SHAFT

The invention relates to a cutting tool intended for the treatment of wood and wood materials. A knife shaft for a planing machine is known, comprising a housing, flat knives mounted under the URL to the axis of rotation of the shaft and parts for fastening the blades 1.. The pakbopey is close to the invention of a knife shaft comprising a body in the form of a screw rod, on the turns of which knives 2 are fixed in the straight grooves. However, using the known shaft requires a considerable amount of time to install the knives. The purpose of the invention is to reduce the installation time for knives. For this, the proposed knife, the shaft is provided with a screw insert with. The steps of the turns are the equal step of the turns of the rod, and on the end surfaces of the turns of the insert there are inclined holes, and on the end surfaces of the new, shear, protrusions placed in the slots of the screw insert. FIG. 1 shows a knife shaft, a general view; in fig. 2 and 3 are sections and B-B in FIG. one; in FIG. 4 screws insert with inclined grooves; FIG. 5 is a view along arrow B of FIG. four . The housing 1 of the knife shaft is made in the form of a screw rod, on the protrusions of which in the grooves 2 there are wedges 3 and knives 4 with protrusions 5. The shaft also contains a screw insert 6c with inclined grooves 7 in which the projections 5 of the knives 4 enter and through holes 8 under the clamp 9 with the spring 10. The blade shaft housing 1 is fixed in a stationary position, the clamp 9 is removed from engagement and the screw insert b is turned relative to the housing 1 with the blades 4 released from the force of the clamping wedges 3, at a predetermined angle speeches ozhey over the body. In this case, the protrusions 5 of the knives 4 move along the inclined grooves of the 7-zing insert b and all the knives are raised or lowered simultaneously. After installing the knives in order to eliminate the self-rotate rotation of the screw insert, the sleeve 6 relative to the housing 1, a lock 9 is inserted in the link between the housing and the screw insert.

All knives 4 are simultaneously clamped in the housing grooves evenly along their length by wedges 3 due to the centrifugal force that occurs when the shaft rotates

The proposed shaft makes it possible to reduce the time needed to install the knives, reduce the laboriousness of preparing the knife shaft for operation, increase the milling performance, improve the quality of processing and reduce the level of schum.

The economic effect is achieved by simultaneously moving and fixing all the knives, as well as simultaneously sharpening them directly on a woodworking machine. At the same time, the time spent on the installation and sharpening of knives is reduced by 5-6 times, and the milling capacity is increased by 5-10%. The annual efficiency from using one blade shaft on the thickness gauge machine for turning A-A-A will turn / by

.

the amount of wood goods is 4.5 thousand rubles,

Claims (2)

1. USSR author's certificate No. 154014, cl. B 27 G 13/02, 1962. 2. USSR author's certificate number 493355, cl. In 27 G 13/00, 1974 (prototype). Fi & .З Fug.t Vid Fi.5