Woodworking machine comprising a linear direct drive

Abstract

The aim of the invention is to provide a robust, simple woodworking machine. To achieve this, the invention provides a machine comprising at least one linear direct drive, which contains a primary part (3, 3a, 3b, 4, 4a, 4b) with a first element (9, 10, 12, 14) for generating a first magnetic field and at least one additional element (17, 18, 20, 27, 28, 29, 30) for generating an additional magnetic field. The first element (9) for generating the first magnetic field is positioned, in particular, in such a way in relation to the additional element (17, 18, 20, 27, 28, 29, 30) for generating the additional magnetic field that the first magnetic field overlaps the additional magnetic field. The machine also comprises a secondary part (5, 6, 6a, 6b), which comprises magnetic return elements and is devoid of magnetic sources. According to the invention, the primary part (3, 3a, 3b, 4, 4a, 4b) and / or the secondary part (5, 6, 6a, 6b) is or are suitable for guiding or placing at least one workpiece and / or for guiding and / or placing at least one tool for machining the workpiece.

Description

technical field [0001] The invention relates to a woodworking machine tool having at least one linear direct drive having a primary part and a secondary part. Background technique [0002] A large amount of linear motion occurs on a woodworking machine tool. For example, workpiece transport and workpiece processing, tool feeding and auxiliary material supply have hitherto been realized with conventional drive technology and mechanical transmission units such as transmissions, pinions engaging racks and ball screws. These mechanical transmission units are subject to mechanical wear and thus require intensive maintenance, repair or replacement when necessary. [0003] Contamination due to machining residues (e.g. chips or dust) and aggressive machining environments (e.g. residual lubricants, adhesives or sealing materials) can also significantly reduce the achievable precision and the achievable machining speed. [0004] As far as conventional drive technology is concerned, ...

AI Technical Summary

Problems solved by technology

These mechanical transmission units are subject to mechanical wear and thus require intensive maintenance, repair or replacement if necessary

[0003] Contamination due to machining residues (e.g. chips or dust) and aggressive machining environments (e.g. residual lubricants, adhesives or sealing materials) can also significantly reduce the achievable precision and the achievable machining speed

[0004] As far as conventional drive technology is concerned, known linear motors have gradually taken a backseat in terms of application due to the susceptibility to interference of the external measuring systems they require and the unfavorable economic properties of their linear drives (e.g. high cost of magnets)

The main obstacle lies in the long travel distances of woodworking machines and the resulting high cost of linear drive systems

Images