EA008012B1 - Wood-working machine for lumber processing - Google Patents

Abstract

The invention relates to wood-working industry and can be used in multipurpose laths for lumber processing.The invention is aimed at providing simplified construction and enhanced reliability in operation of the multipurpose lath.The known wood-working machine for lumber processing is additionally equipped with a second cutting drum mounted in one housing with a device for pressing a wood piece to a planning drum, the device for pressing a wood piece to a planning drum is mounted beneath the table of the upper cutting drum.There are some other differences from the prototype.Combining two functions – planning and pressing a work-piece to the table during jointing operation- enables to reduce cost price of the machine and simplifies its design. Simultaneously, each cutting shaft is reliably-protected to meet high requirements of safety engineering.

Description

The invention relates to woodworking machinery and can be used in universal machines for processing lumber.

Known household fugovalny woodworking machines, including the body, with a cutting drum installed in it, one movable and one fixed planing tables, a device for pressing the workpiece to the table, the drive of the cutting carriage and the drive control system [1].

A significant drawback of such a machine is the difficulty of obtaining a given accuracy in the thickness of the part, since the installation base is not aligned with the measurement, so when planing the side of the workpiece can be non-parallel.

Known combined fugovalnye and reysmusovye woodworking machines EMKO [2, 3]. Known woodworking machines include a housing with a cutting drum installed in it, a pressure device for pressing the workpiece to the table, a cutting carriage drive, an auxiliary carriage for jointing, and a drive control system.

A disadvantage of the known combined machines is the lack of a protective device that bridges the gap between the movable and fixed tables, as well as the absence of a protective device that excludes the simultaneous approach to different cutting tools.

A sawmill machine [4] was adopted as a prototype; it contains a box-shaped body with a working shaft pivotally fixed inside it for fixing the main and auxiliary cutting tools, movable and fixed planing tables, an auxiliary table for supporting lumber, a thickness gauge table with pressure rollers, a drive and a safety device, in which, the safety device is made in the form of a profile box mechanically interlocked with each other The gap between the movable and fixed tables, and the profile lever, spring-loaded relative to the side wall of the case, while the profile flag is spring-loaded relative to the stationary table and mounted on an axis that can be rotated through an angle of 90-95 ° C to ensure the passage of lumber, and the profile lever is mounted on its axis with the possibility of swinging relative to the latter, and the profile flag is made with a protrusion for interfacing with the response groove made on the profile lever.

The prototype provides reliable and safe operation, but is rather complicated in construction. In addition, the use of the same cutting drum generates many problems associated with readjustment and safety.

The present invention is to ensure the simplicity of the design while maintaining high safety on a universal household machine.

The task is solved by the fact that in a known machine for processing lumber consisting of a body with a cutting drum installed in it, a drive, a movable and fixed planing tables, according to the invention, it is additionally equipped with a second cutting drum installed in a single body with a clamping device of the workpiece to the planer the drum, while the device clamping the workpiece to the planer drum is installed at the bottom of the table of the upper cutting drum.

The task is also solved by the fact that, parallel to the upper cutting drum, two spring-loaded rubberized rollers and a serrated sector are installed, ensuring the passage of the workpiece in one direction only.

This embodiment of the machine for processing lumber can significantly simplify the design, increasing the versatility of the machine, and the possibility of its use as a domestic machine. In addition, the machine provides good ergonomics and increased operational safety.

The invention is illustrated by drawings.

FIG. 1 shows a sawmill processing machine, longitudinal section.

FIG. 2 shows the upper cutting drum with the attachment of an additional milling cutter and an additional lifting table.

In the housing 1 of the device on bearings mounted cutting drum 2, driven in rotation from the motor belt drive. On the 4 rolling pins 3, a lifting table 4 is installed, moved in the vertical direction by means of a screw 5. The amount of movement is measured according to a linear pointer 6. The rubberized rollers 7 are mounted on the axes 8 and serve to press the workpiece (not shown) to the table 4 during processing using the upper cutting drum 9. To the lower surface of the table 4 attached spring element 10, which serves to hold the workpiece to the table when planing using the lower cutting drum. The planing part of the machine has a movable 11 and a fixed 12 planing tables. The drive of the cutting drums is carried out through the electric motor 13 by means of a pulley 14 and pulleys of the drums 15 and 16 through a belt drive 17 or 18. The belt drive is closed by a casing 19. Because of the difficult access to the upper cutting drum in the case, holes 20 are made for the base of the device (not shown) to install drum knives.

To prevent the workpiece from being thrown away during processing towards the working device

- 1 008012 is equipped with a claw protection, made in the form of a jagged sector 21. The machine is controlled using the remote control 22. The table 4 of the upper cutting drum 9 can be equipped with an additional external attachment 23, which allows processing with mills 24 mounted on the cone 25 of the upper cutting drum 9. In this case, the use of dimensional linear pointer 6 can significantly improve the accuracy of processing when cutting (milling) grooves.

Setting up the machine and processing on the upper cutting drum 9 (surface gauge) is performed as follows.

Fixed 12 and movable 11 tables of the machine are installed in the same plane. The ramming device is installed on the body of the machine and fixed with four screws. On the pulley 14 mounted on the electric motor 13 of the machine, and one of the pulleys 15 or 16 mounted on the cutting drum of the thicknessing or planing device, set the belt 17 or 18 produce its tension. After that, the belt drive is closed with a casing 19.

Using a removable device (not shown), based on the openings of the upper housing 20, the knives of the upper cutting drum are mounted and fixed to the same diameter. The fixture is removed. After that, the housing with a cutting drum with a screw 5 is set to the desired position in height to ensure the processing of parts of a given thickness. Counting vertical movement is made on line 6.

Rubberized rollers 7 can be equipped with a clutch, ensuring their rotation only in the direction of supply of the workpiece. This, along with the serrated sector 21, additionally protects the worker from ejection of the workpiece from the reamer.

The clamping force of the workpiece to the table of the machine is controlled by vertical movement of the thicknessing table and creating the necessary tension of the elastic element 10 relative to the upper surface of the workpiece.

The combination of two functions in the console - reysmusovaniya and clamp the workpiece to the table when fugovanii, reduces the cost of manufacturing woodworking machines and simplifies the design of the combined household machine. At the same time, each cutting shaft is fairly well protected from the penetration of body parts to it, therefore it provides an increased level of safety.

Sources of information taken into account in the examination

1. Machine woodworking household desktop Sadko SDBN-2, produced by UPO Quant, Veliky Novgorod, Russia.

2. Combined jointing and reysmusovaya machine EMKO Czech 2000, EMCO, Austria, 1986.

3. Universal woodworking machine EMKO old 2000, EMCO, Austria, 1986.

4. RF patent №2038957, m. Cl. In 27C 1/04 publ. 07/09/1995 - the prototype.

Claims (4)

CLAIM 1. A machine for processing lumber, consisting of a body with a cutting drum installed in it, a drive, movable and fixed planing tables, characterized in that it is additionally equipped with a second cutting drum installed in one housing with a device for clamping the workpiece to the planing cutting drum, this device clamping the workpiece to the planing cutting drum is installed below the table of the upper cutting drum. 2. A lumber processing machine according to claim 1, characterized in that two spring-loaded rubberized rollers are installed parallel to the upper cutting drum. 3. The machine for processing lumber according to claim 2, characterized in that the spring-loaded rubberized rollers are equipped with a device that ensures their rotation only in the direction of supply of the workpiece. 4. The machine for processing lumber according to any one of claims 1 to 3, characterized in that the cone for attaching an additional cutting tool is made on the upper cutting drum, and the device for clamping the workpiece to the planing cutting drum is equipped with a removable table.