JP2008207272A - Band saw machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easily usable portable band saw machine for increasing portability by simultaneously promoting size and weight reduction, improving functionality. <P>SOLUTION: A chip removing brush is installed on a saw blade contact surface of a driving pulley for driving a band-like saw blade of the portable band saw machine. An installation part structure installed on a head of a vice having a workpiece fixing part of at least two different shapes, is formed in the same, and can be replaced with at least two different vices. A spare band-like saw blade is stored inside a protective cover. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a band saw machine.

  Conventionally, in the field of portable band saw machines, it has been required to make the band saw machine easy to use and to increase the portability by reducing the size and weight.

  This ease of use and the demand for light weight and small size usually involve mutually opposing technical problems, and in order to achieve both, it is necessary to devise sophisticated technical solutions. Therefore, in the portable band saw machine, due to the demand for light weight and small size, even if the function is adopted in the large installation type band saw machine, it is normal that the incidental function is not adopted.

  For example, Patent Document 1 and Patent Document 2 show a chip removal device for a large installation-type band saw machine. In other words, if chips adhere to the band saw blade, the frictional force between the wheel that drives the band saw blade and the band saw blade is reduced, causing slipping. The chip adhering to the band saw blade reduces the cutting ability of the band saw blade. This causes problems such as lowering and causing cutting edge wear and breakage. Therefore, in a large-sized installation type band saw machine, a chip removal device is installed, and the rotating brush is brought into contact with the band saw blade, Remove chips adhering to. However, this chip removal device requires a mechanism for rotating the brush, which increases the size of the device, and is not employed in portable band saw machines.

  Also, if the vise part that fixes the work material of the band saw machine can be replaced with a vise with a different work material fixing shape, it can support a wide range of work material shapes and improve functionality, Although there is a portable band saw that can be removed from the vice, there is no portable band saw that can be replaced with a vise having a different workpiece fixed shape.

  Furthermore, in the portable band saw machine, the saw blade is a consumable item, and it is necessary to transport the spare band saw blade together with the band saw machine, and the structure for storing the spare band saw blade on the bottom surface of the bed of the portable band saw machine is patented. As shown in Document 3, since the storage portion is provided, the bed cannot be reduced in size, which is an impediment to improving portability.

  Accordingly, there is a demand for an easy-to-use portable band saw machine that improves functionality by adding the above-described functions, and at the same time promotes miniaturization and weight reduction to increase portability.

Japanese Patent Laid-Open No. 7-246513 Japanese Utility Model Publication No. 6-9820 Japanese Utility Model Publication No. 6-50727 Japanese Utility Model Publication No. 10-100103

  An object of the present invention is to provide an easy-to-use portable band saw machine that has improved functionality and at the same time has been reduced in size and weight to increase portability.

  According to the first aspect of the present invention, a belt-like saw blade formed in a loop shape, a protective cover covering the belt-like saw blade formed in a loop shape, and installed in the protective cover and engaged with the belt-like saw blade A drive pulley that drives the belt-like saw blade along a predetermined path formed in the protective cover, and is fixed in the protective cover and is associated with the belt-like saw blade of the drive pulley. A band saw machine comprising a chip removing brush that contacts a mating surface is provided.

  That is, according to the first aspect of the present invention, a brush for removing chips is attached to a surface that engages with the saw blade of a drive pulley that drives the band-shaped saw blade, and the chips attached to the pulley are removed, thereby No need for a mechanism to rotate the brush like the chip removal device installed in the large-sized installation band saw machine, preventing the slip between the saw blade and pulley without increasing the size of the device, The function of the saw blade has been improved with the same functions as the large-sized band saw machine, which prevents the cutting ability of the saw blade from being lowered and prevents wear and breakage of the blade edge. An easy-to-use portable band saw is provided.

  According to the second aspect of the present invention, there is provided a band saw machine according to the first aspect, wherein a vise having at least two differently shaped workpiece fixing portions can be attached to the vise portion. Is done.

  That is, in the invention of claim 2, replacement of a vise having at least two different workpiece fixing part shapes, ie, a chain vise and a flat vice, by making the structure of a plurality of vise mounting parts to be attached to a bed the same. It is possible to provide an easy-to-use portable band saw with improved functionality so that workpieces of various shapes can be fixed.

  According to a third aspect of the present invention, there is provided a band saw machine according to the first or second aspect, wherein a spare band-like saw blade can be accommodated inside the protective cover.

  That is, in the invention of claim 3, the function is improved by eliminating the trouble of separately carrying the consumable saw blade spare and the band saw machine, and the band saw machine body is reduced in size and weight. An easy portable band saw is provided.

  According to the invention described in each claim, it is possible to replace with a vise having a workpiece fixing part having a different shape, provided with a chip removing device, and a spare band saw blade can be compactly provided in a portable band saw machine. By being able to be stored, there is a common effect of providing an easy-to-use portable band saw with improved functionality and reduced size and weight to increase portability.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating a schematic configuration of an embodiment when the brush of the present invention is applied to a portable band saw. The band saw blade 16 is attached as shown so as to rotate around the drive pulley 14 and the driven pulley 15 in the direction of arrow A. The drive pulley 14 is driven by the drive motor 11 via the gears 12 and 13 to drive the band saw blade 16. As shown in the figure, the brush 21 according to the present invention is attached to a position where the chips adhering to the drive pulley 14 are removed before the drive pulley 14 contacts the saw blade. The brush tip is attached so that it abuts. Since the drive pulley 14 itself rotates, the brush 21 does not require a drive mechanism, can be reduced in size and fixed, and can efficiently remove chips adhering to the drive pulley 14. In the illustrated embodiment, the brush 21 is fixed in contact with the surface of the drive pulley 14 that engages the saw blade, but in other embodiments, the brush 21 is in direct contact with the saw blade 16. Can be fixed to.

  2 and 3 are diagrams illustrating a schematic configuration of an embodiment when the chain vice and the flat vice of the present invention are applied to a portable band saw machine. The chain vise 33 and the flat vise 34 have the same mounting structure with respect to the bed 32, are positioned by a set pin (not shown) attached to the bed 32, and are easily attached to the bed 32 by an installation screw (not shown). Can be installed on. Therefore, the workpiece 100 having various shapes can be fixed and processed in a short time. In FIG. 2, the workpiece 100 is shown in a pipe shape fixed to the chain vise 33, and the chain vise 33 is surrounded by a curved line such as an elliptical cross section and a partial circular cross section in addition to a circular cross section. The workpiece 100 having a cross-sectional shape can be fixed, but can be replaced with a flat vise 34, so that a rectangular cross-section, a square cross-section, and other various cross-sectional pipes and bars having a substantially straight side. The workpiece 100 such as a plate can be fixed and processed. That is, the embodiment of the present invention improves the functionality of the portable band saw and makes it easy to use. In yet another embodiment, a vise corresponding to the shape of another workpiece 100 other than the shape of the workpiece 100 described with respect to the chain vise 33 and the flat vise 34, for example, a vise corresponding to a spherical workpiece. Can be applied to a portable band saw.

  FIG. 4 is a diagram illustrating a schematic configuration of one embodiment when the spare saw blade storage portion of the present invention is applied to a protective cover of a portable band saw machine. Inside the cover 40, a plurality of positioning 43 is formed of the same material as the cover 40 and integrally with the cover 40 in order to accommodate the spare saw blade 46. The cover 40 further includes a clasp 41 fixed by a small screw and two clasps 42 fixed by a thumbscrew, and the spare saw blade 46 is covered by rotating the thumbscrew by hand to remove the clasp 42. The spare saw blade 46 can be easily accommodated and carried with the band saw by simply placing the thumbscrew and screwing in the thumbscrew to fix the two clasps 42. In other embodiments, other securing means not limited to the catches 41, 42 can be utilized to secure the spare saw blade 46 to the cover 40.

  In the above description, the present invention has been described from the viewpoint of improving the functionality of the portable band saw machine and at the same time increasing the portability by reducing the size and weight. However, the improvement in functionality and the technology for reducing the size and weight adopted in the present invention are not limited to application to a portable band saw machine, but can also be applied to a large installed band saw machine. The functionality of the installation type band saw machine can be improved, and at the same time, reduction in size and weight can be promoted.

It is a figure explaining the schematic structure of embodiment at the time of applying the brush of the present invention to a portable band saw machine. It is a figure explaining schematic structure of an embodiment at the time of applying a chain vice of the present invention to a portable band saw. It is a figure explaining the schematic structure of embodiment at the time of applying the flat vice of this invention to a portable band saw. It is a figure explaining the schematic structure of embodiment at the time of applying the spare saw blade accommodating part of this invention to the protective cover of a portable band saw machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Frame 11 Drive motor 12 Gear 13 Gear 14 Drive pulley 15 Drive pulley 16 Saw blade 18 Guide roller 19 Seri head 19 'Seri head 20 Saw blade fall prevention mechanism 21 Brush 31 Transport wheel 31' Transport wheel 32 Bed 33 Chain vise 34 Flat Vise 40 Cover 41 Clasp 42 Clasp 43 Positioning 44 Cover Clasp 46 Spare Saw Blade 100 Workpiece

Claims (3)

A band-shaped saw blade formed in a loop shape;
A protective cover covering the band-shaped saw blade formed in the loop shape;
A band saw machine, comprising: a drive pulley that is installed in the protective cover and engages with the band saw blade to drive the band saw blade along a predetermined path formed in the protective cover;
A band saw machine comprising a chip removing brush fixed to the protective cover and in contact with a surface engaged with the band saw blade of the drive pulley.   The band saw according to claim 1, wherein a vise having at least two differently shaped workpiece fixing parts can be attached to the vise part.   The band saw machine according to claim 1 or 2, characterized in that a spare band saw blade can be accommodated inside the protective cover.

Images