SLIDE BLOCK FOR A SAW BAND IN A BANDSAW MACHINE

Abstract

A slide block for a saw band in a bandsaw machine, which is disposed as a pair at a distance to one another and between said pair a slot is present, through which the saw band is guided, and the frictional forces of the running saw band are absorbed on the edges of the slide blocks, whereby the slide block is made of a hard ceramic.

Claims

1. A slide block for a saw band arranged in a bandsaw machine, which is disposed as a pair at a distance to one another and between said pair a slot is present, through which the saw band is guided, wherein frictional forces of the running saw band are absorbed on edges of the slide blocks, and wherein the slide block is made of a hard ceramic.

2. The slide block according to claim 1, wherein the hard ceramic is an aluminum oxide.

3. The slide block according to claim 1, wherein the hard ceramic is a silicon nitride.

4. The slide block according to claim 1, wherein , the hard ceramic has a Vickers hardness greater than 1600 HV 0.5.

5. The slide block according to claim 1, wherein both slide blocks of the pair are made as symmetric prisms each with two parallel sliding surfaces such that a middle part of the side of the saw band slides along them, wherein the sliding surfaces stand vertically on a bottom surface and thereby also on a top surface of the prisms.

6. The slide block according to claim 1, wherein two edges of the sliding surfaces are rounded off relative to the bottom surface and to the top surface such that the torsional forces arising during a pivoting of the saw band are absorbed.

7. The slide block according to claim 1, wherein, to prevent thermal stress, the saw band at its toothless band back is not in contact with the slide blocks.

8. The slide block according to claim 1, wherein, in its vertical axis, the slide block has two holes located at a distance to one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:

[0022] FIG. 1 shows a saw band guided between two slide blocks; and

[0023] FIG. 2 shows a slide block in an isometric view.

DETAILED DESCRIPTION

[0024] FIG. 1 shows a continuous rotary saw band 2 that is guided between two slide blocks 1 in slot 16. Slide blocks 1 are screwed as a pair onto a guide plate 6, which in turn is attached to a carriage 7 and a bolt 8 with a spring 9 in a bandsaw.

[0025] Slide blocks are made prism-shaped with side sliding surfaces, which are so short that band back 4 and band serration 5 during rotation do not rub against slide blocks 1.

[0026] FIG. 2 shows a slide block 1 in an isometric view. It is formed in the shape of a prism and has the two sliding surfaces 12 and 13, each of which have an edge 14 that is rounded off both relative to bottom surface 10 and top surface 11.

[0027] Holes 15 are disposed symmetrically, so that the slide block can be screwed on in all directions and thereby all edges 14 can be used one after the other.

[0028] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.