RU2573357C1 - Machine for log processing - Google Patents

Abstract

FIELD: woodworking industry.SUBSTANCE: machine comprises a fixed frame, vertical racks mounted on the frame for centring and fixing the log, the cutting mechanism in the form of a carriage with a drive, moved back and forth along the processed log, and also a drive of the working bodies, and a mechanism of their setting. Each of the machine mills is made assembled of two halves symmetrically arranged to each other and located on the same axis, between which a circular saw blade is rigidly attached to perform longitudinal cuts along the entire length of the log surface. In addition, an electric motor is mounted, on the shaft of which a rod with a drill is mounted for drilling longitudinal holes, and movement of the electric motor is carried out in a horizontal direction along the guide rails by means of a geared motor. At that to eliminate the distortion of the rod with the drill there are supporting lunettes which are able to move through the transfer of the screw-nut.EFFECT: invention enables to produce rounded logs with the formation of longitudinal holes to increase the capability of assembling the structure of logs, increasing their strength and fire resistance by reinforcing with metal and plastic components, reduction of internal stresses in the core of the log and its weight.4 dwg

Description

The invention relates to the field of woodworking industry and can be used in the manufacture of blanks for the construction of wooden houses, baths, etc.

Known machine for processing logs. The machine includes a fixed bed mounted on the bed of the device for centering and securing the log, a carriage with a drive of the working bodies and its own drive mounted on the bed with the possibility of reciprocating movement along the axis of the processed log. The device for centering and securing the log is equipped with a drive, a device for counting the angle of rotation of the log and a center finder (see patent No. 21717441 C2).

Its disadvantage is the presence of residual stresses after processing, as a result of which the log cracks, while reducing the life of the log.

The closest adopted for the prototype is a machine for logs logs. The machine includes a fixed bed mounted on the bed of the device for centering and securing the log, a carriage with a drive of the working bodies and its own drive mounted on the bed with the possibility of reciprocating movement along the axis of the processed log. The device for centering and securing the log is equipped with a drive, a device for counting the angle of rotation of the log and a center finder, characterized in that it contains a spindle with a combined cutter, which allows the log to be cylindrical with the simultaneous creation of a longitudinal groove for relieving residual stresses (see patent No. 2497661 C1).

The disadvantages of the known object are the limited structural properties of the processed logs for assembling them into the structure, as well as the difficulty of reinforcing, for example, with metal or polymer elements to increase strength and fire resistance.

The objective of the invention is to provide a machine for cylindering logs with the formation of longitudinal holes in order to expand the ability to assemble structures from logs, increase their strength and fire resistance, by reinforcing with metal or polymer elements. Also, longitudinal holes can reduce internal stresses in the core of the log and its mass.

The task is achieved by the proposed machine for processing logs containing a fixed frame, vertical stands mounted on the frame for centering and securing the logs, a cutting mechanism in the form of a carriage with a drive, moved reciprocating along the processed log, the drive of the working bodies and the mechanism for setting them, each the milling cutter is made by a team of two halves symmetrically located to each other and located on the same axis, between which the saw blade is rigidly fixed to perform longitudinal silt along the entire length of the surface of the log, characterized in that an electric motor is additionally installed, on the shaft of which a rod with a drill is fixed for drilling longitudinal holes, the horizontal movement of the electric motor is carried out along the guides with the help of a geared motor; however, to prevent the rod from bending with a drill, there are supporting lunettes, which have the ability to move with a screw-nut transmission.

List of drawings: in FIG. 1 shows a machine for processing logs, front view; in FIG. 2 shows a machine for processing logs, top view; in FIG. 3, 4 show the arrangement of holes in the logs.

The machine (Fig. 1, 2) contains a fixed bed 1, on which are installed vertical posts 2 and 3 for centering and securing the log 4. Log 4 receives rotation from the gear motor 5 through a belt drive.

Processing is performed by a milling spindle 6, on which milling cutters 7 are mounted, consisting of lower and upper mills, as well as a circular saw located in the middle. The longitudinal movement of the spindle relative to the log is carried out using a gear motor 8.

An electric motor 9, on the shaft of which a chuck 10 is mounted, is mounted on a support 11, which can be moved along the guides 12 by means of a gear motor 13 and a screw-nut transmission 14. In the chuck 10, a rod 15 is fixed with a drill 16 at the end. To eliminate the curvature of the rod 15 there are supporting lunettes 17, which are moved along the guides by means of a screw-nut transmission 18.

The machine operates as follows.

Log 4 is fed to the centers and fixed. Mills 7 are installed on the thickness of the cut layer. When you turn on the electric motor of the milling head, the log is processed along the generatrix with the simultaneous creation of a longitudinal groove, while the feed movement is carried out using the feed mechanism 8. The milling head contains prefabricated milling cutters consisting of lower and upper mills, as well as a circular saw located in the middle. Depending on the required profile, the cutters can be with flat or profile knives.

After final processing, the log rotates through an angle of 90 °. Processing of one more side of the log occurs. When the log is processed from all sides, the gear motors 5 and 8 are disabled by the operator.

Then the log is fixed in the centers in such a way as to drill holes in a certain place (Fig. 3, 4). Next, the electric motor 9 is turned on and a drill 16 is drilled using a gear motor 13 of the transmission screw-nut 14. In the process of drilling, the rod 15 is supported by a rest 17, which also moves along the rod by means of a screw-nut transmission 18. After the drill leaves the opposite end of the log, the geared motor turns on and returns the electric motor with the drill to its original position. Then the process is repeated.

The proposed object allows to produce rounded logs, to make longitudinal holes in them to expand the structural properties and subsequent reinforcement with metal and plastic elements in order to increase strength and fire resistance.

Claims (1)

A machine for processing logs containing a fixed bed, vertical racks for centering and securing the logs mounted on the bed, a cutting mechanism in the form of a carriage with a drive moved reciprocating along the processed log, the drive of the working bodies and the mechanism for setting them, each of the milling cutters is made of two symmetrically located to each other and located on the same axis halves, between which the saw blade is rigidly fixed to perform longitudinal cuts along the entire length of the surface of the log, distinguishing In addition, an electric motor is additionally installed, on the shaft of which a rod with a drill is fixed for drilling longitudinal holes, the electric motor is moved in the horizontal direction along the guides with the help of a gear motor, while to prevent the rod with the drill from being bent, there are supporting rests that can move using a screw-nut transmission.

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