SU1402424A1 - Cutting assembly for wood-working machine provided with ring saws - Google Patents

Abstract

The invention relates to the woodworking industry and can be used for cooling woodworking machines. The purpose of the invention is to increase the reliability of the device. When the shaft 5 rotates, the cooling medium from the pressure chamber 10 flows through the channels 12 and B to the saws 6 and cools them. 2 Il.

Description

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This invention relates to a woodworking industry and can be used to cool woodworking machines with circular saws located on a shaft.

The purpose of the invention is to increase the reliability of the device,

Fig. 1 shows a cutting assembly, longitudinal section; figure 2 - section aa in figure 1.

The cutting unit of the woodworking machine with circular saws includes two supports 2 and 3 mounted on the bed 1, a shaft 5 fixed to them from a belt transmission 4, 5 circular saws 6 mounted on the shaft 5 and 7 guides 7. The guides 7 have radial channels 8, and on their end surfaces x are grooves 9. To the support 3 of shaft 5, a fixed pressure chamber 10 is attached, which is made with an annular cavity 11, which on one side tightly encloses the output of shaft 5, and on the other side is connected to longitudinal channels 12 located by externally it is shaft diameter 5. The longitudinal channels 12, in turn, communicate with the radial channels 8 of the guides 7. The annular cavity 11 of the pressure chamber 10 is connected to the pressure pipe 13 of the fluid delivery source (not shown).

The saw shaft in the area of the pressure chamber 10 is made with a step 14 in front of which a sleeve 15 is installed, the diameter of which is equal to the diameter of the step 14 of the shaft 5, and between the adjoining chambers

Seals 10, bushings 15 and steps 14 are installed seals 16.

The longitudinal channels 12 from the other end of the shaft 5 are limited by the sleeve 17, tightly seated on the level 18 of the shaft 5, and the nut 19.u4- / 4

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The device works as follows.

During rotation of shaft 5, coolant (water or water-air mixture) is supplied through pipe 13 into annular cavity 11 of pressure chamber 10. Next, cooling medium from annular cavity 11 enters longitudinal channels 12 of shaft 5, then through radial channels 8 of guide 7 The m saw blades 6 extend from the center to the peripheral part of the saw by means of centrifugal forces and intensively cool the saw blades 6, with all the coolant flowing in contact with the saw surface and they are completely cooled from the saw shaft to the periphery.

When changing saws 6, it is necessary to unscrew the nut 19, guides 7 with saws 6, i.e. dismantle the pressure chamber is not necessary.

Claims (1)

Invention Formula The cutting unit of a woodworking machine with circular saws, comprising a shaft mounted on supports with saws and coaxially arranged saw guides made with radial channels and means for supplying a cooling medium to radial channels, characterized in that, in order to improve reliability, the shaft made with longitudinal channels evenly spaced around the outer diameter, and means for supplying a cooling medium to the radial channels made in the form of a shaft fixed on one of the shaft supports coaxially with the shaft a pressure chamber with an annular cavity connected to the longitudinal channels of the shaft, while the pressure chamber and the free end of the shaft are connected to the guides tightly.