RU92829U1 - MACHINE FOR CUTTING THE SPIKES ON THE CUTS OF THE LOGS OF CUTS - Google Patents

Abstract

 A machine for cutting tenons at the ends of the log houses of houses, including a bed, guides on which carriages with calipers and milling cutters and their drives are mounted, a carriage drive and basing and clamping mechanisms, characterized in that the two guides are mounted symmetrically and with an inclination relative to the horizontal axis of the machine , the third guide is mounted vertically, while the carriages mounted on inclined guides are pivotally connected by rods to the screw nut of the carriage drive.

Description

The utility model relates to the woodworking industry and can be used in machines for cutting spikes (paws) of the "dovetail" type on the ends of logs of wooden houses.

A device is known for cutting tenons at the ends of workpieces, including a frame, stationary and interchangeable guides, milling heads and their drives mounted on calipers with mechanisms of vertical and angular (15 °) movements, a basing mechanism in the form of stops on chains of a conveyor mounted on a stationary and shift guides, the clamping mechanism in the form of spring-loaded V-belts worn on pulleys (see Potemkin L.V. Woodworking machines and automatic lines. M., 1987, pp. 113 ... 114, Fig. 33).

On such a machine, dovetail spikes can be cut, but such spikes are unsuitable for log houses of wooden houses. For log cabins, thorns of a more complex shape are needed that cannot be obtained on the described machine. In addition, the machine does not have a mechanism for basing logs.

A device is known for cutting tenons at the ends of workpieces, including a frame, stationary and movable guides, a carriage with conical and cylindrical milling cutters of spindles and their drives, which are mounted on calipers, basing mechanisms with a stop ruler, and clamping mechanisms. Two basing mechanisms are installed on the frame: one basing mechanism is made in the form of a profile ruler with V-shaped sockets, and the other is in the form of a shaft mounted on the axis with a handle, rulers and a position lock, while the clamping mechanisms are made in the form of beams with elastic pneumatic chambers mounted on levers pivotally mounted on the housings of the basing mechanisms and equipped with stops that can interact with the bed. At the same time, three rulers are installed on the rotary shaft: two rulers with V-shaped sockets and one with a straight edge. Several logs are placed in the nests of the rulers and processed at the same time (application No. 92007434/15 from 1992.11.23, B27F 1/00, prototype).

During the operation of the device, heavy physical labor is used, associated with loading the logs onto the rulers, laying them out on the nests, axially moving the logs to a stubborn ruler, turning the logs around their longitudinal axis, and removing the processed logs. In this case, when turning the logs, it is possible to shift their ends from the thrust ruler, which inevitably leads to a decrease in the accuracy of the size and shape of the spikes.

The technical task of the claimed utility model is to create a machine that allows you to cut dovetail spikes on logs suitable for assembling wooden houses, while ensuring that the obtained spikes are sufficiently accurate to ensure that the logs are tightly joined together when assembling log cabins, and high productivity of the machine and facilitating the work of workers.

To do this, in a machine for cutting tenons on logs of log cabins, including a bed, guides on which carriages with calipers and milling cutters and their drives are mounted, a carriage drive and basing and clamping mechanisms, the two guides mounted symmetrically and with an inclination relative to the horizontal axis of the machine, and the third guide is mounted vertically, while the carriages mounted on inclined guides are pivotally connected by rods to the screw nut of the carriage drive.

The use of inclined guides at an angle of + 4 ... 10 ° and - 4 ... 10 ° to the horizontal axis of the machine allows you to simultaneously process the upper and lower surfaces of the tenon without relocation of the log and increase productivity of the machine. The use of articulated rods allows one drive to move both carriages on inclined guides and simplify the design of the machine. The use of a vertical guide allows you to treat the side surface of the spike located on the outside of the log house with a face mill, in which the surface forming the corner is sheathed with boards.

Thus, the proposed machine guides and articulated levers of the carriage drive allow to obtain spikes of the required accuracy and shape without relocation of the log, which increases the productivity of the machine, simplifies its design and facilitates the work of workers.

Comparison of the claimed utility model with the prototype shows that it has distinctive features, therefore, we can assume that it meets the criterion of "novelty."

The utility model can be manufactured on standard equipment using well-known processes, therefore, it meets the criterion of "industrial applicability"

Figure 1 shows a diagram of a General view of the machine for cutting thorns, figure 2 - section aa in figure 1, figure 3 - the shape of the spike (legs), cut at the ends of the logs.

The machine for cutting tenons at the ends of the log houses includes a frame 1 of channels, on which inclined guides 2, 3, and a vertical guide are mounted 4. Carriages 5, 6, 7 are mounted on the guides with the possibility of moving them along the respective guides. Milling spindles with conic mills 8 and 9 on carriages 5 and 6 equipped with electric motors and a face mill 10 on the carriage 7 are installed on each carriage on the calipers. The calipers are equipped with screws with handwheels for adjusting the position of the milling cutters. The carriages 5 and 6 are pivotally connected by rods 11, 12 with a screw nut 13 connected to the gear motor 14. The carriage 7 is connected by a screw gear to the gear motor 15.

On the frame 1 is also mounted a basing mechanism in the form of a roller conveyor 16, side stops 17 and screw clamp 18 (figure 2).

The tenon (paw), cut on a log 19, has the shape of a dovetail with the following dimensions in thickness: from the end surface - 6/8 and 4/8, and at the base of the tenon, respectively 4/8 and 2/8 of the side of the square, inscribed at the end of the log. The length of the spike is equal to the width and side of the specified square. Thus, the upper face 20 of the spike and the lower face 21 are inclined to the horizon and the axis of the log 7 °.

The device operates as follows.

A pre-rounded log with a cut longitudinal groove and trimmed to length in length is laid with a longitudinal groove on the roller conveyor 16 and manually fed to the folding end stop (not shown). The log is pressed against the side support 17 and clamped by a clamp 18.

The gear motor 14 is turned on, the screw moves the nut to the left and the rods 11, 12 push the carriages 5, 6 onto the log. Conical cutters 8, 9 process the lower and upper surfaces of the tenon. Then, reversing the drive, the carriage is returned to its original position. The gear motor 15 is turned on and the face mill 10 advancing on the log processes the side surface of the tenon.

If the machine is made double-sided, then at the opposite end of the log the same spike is cut at the same time.

The thorn is chopped. The log is released from the clamp and removed from the machine along the roller conveyor.

In the blockhouses of houses, such spikes prevent lateral displacement of the logs, and the lateral planes 22, allow sheathing the corners of the houses from the outside, protecting the corners from moisture and giving them an aesthetic appearance.

Using the utility model allows to process log spikes for log houses of the dovetail type on the machine.

Claims (1)

Machine for cutting tenons on the ends of the logs of log houses, comprising a frame, guide, on which are installed the carriage with calipers and cutters and their actuators carriages actuator and deployment mechanisms and pressing, characterized in that the two guides are mounted symmetrically and inclined relative to the horizontal axis of the machine , the third guide is mounted vertically, while the carriages mounted on inclined guides are pivotally connected by rods to the screw nut of the carriage drive.