JP2006000674A - Torsion brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To positively and easily achieve deburring and polishing of an inner surface of a pipe or a hole with a small bore by making a center shaft of a torsion brush extremely thin. <P>SOLUTION: An insertion void part 3 for a radially passing brush material 4 is formed at a part of the tip of a metallic wire material 2 into slit shape along a longitudinal direction in a state of one end being opened to the tip of the wire rod, and a plurality of brush materials 4 are arranged orthogonally to the length direction of the wire material 2 to mount the center portion into the insertion void part 3. The slit-like insertion void part 3 with the wire material 2 mounted is spirally twisted to spirally arrange the brush materials 4. The wire material 2 is formed of metal wire, and the brush material is formed of one or more selected out of resin lines, metal wire, biodegradable lines, vegetable fiber and animal fiber. Abrasive grains are mixed in the brush material 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a twisting brush that can easily polish an inner surface of a pipe having a very small diameter or a hole.

Generally, a twist brush is formed into a spiral shape by sandwiching a plurality of bundled bristles with a plurality of metal core wires and simultaneously twisting the plurality of core wires in this state. For example, the invention disclosed in “Torsion brush” described in Japanese Patent Application Laid-Open No. 7-246114 and “Method for removing burrs and its removal tool” described in Japanese Patent Application Laid-Open No. 7-285056 are typical.
JP 7-246114 A Japanese Patent Laid-Open No. 7-285056

  However, in this type of conventional twisting brush, since there are a plurality of core wires as the central axis, even if twisted, the diameter becomes the sum of the diameters of the minimum number, and the caliber Since it is impossible to penetrate through extremely small pipes and holes, it was not possible to reliably achieve this internal polishing.

  Therefore, conventionally, when polishing an extremely thin interior, only one brush bristle or only one polygonal bar-shaped metal wire is used and inserted into a pipe or hole to reciprocate or further end However, it was possible to carry out the machining operation by extending the round bar continuously and rotating the shaft, but there were many defective products for removing the flash, and an excellent product could not be obtained.

  Therefore, the present invention has been proposed in order to solve the above-mentioned drawbacks, problems, and disadvantages. By making the central axis of the twisting brush extremely thin, it is possible to remove the flash on the inner surface of a workpiece having a small diameter. The object is to make it possible to reliably and easily achieve the inner surface treatment.

  In order to achieve the above-mentioned object, the present invention provides an insertion hollow portion of a brush material that penetrates in a radial direction at a part of a tip of a metallic wire material in a length direction with one end portion being released at the tip of the wire material. A slit-shaped insertion space in which a plurality of brush materials are arranged so as to be orthogonal to the length direction of the wire rod and a central portion is mounted in the insertion space portion. The brush material is characterized in that the brush material is arranged in a spiral shape by twisting the portion in a spiral shape.

  The twisting brush of the present invention has only one wire holding the brush material, and can manufacture a very thin shape according to the purpose of use, so that the inner surface of a workpiece having a very small diameter is deburred and polished. Processing and the like can be achieved easily and reliably.

  Embodiments of the present invention will be described below with reference to the drawings. First, the wire 2 forming the central axis of the twisted brush 1 according to the present invention is not particularly limited, but has a diameter of about 0.1 to 2 mm. A round bar, a triangular bar, a square bar or the like, and a metal wire such as stainless steel, iron, piano wire, copper, aluminum, or zinc drawing wire is used as the material.

  In the embodiment of FIG. 1, the insertion hollow portion 3 that penetrates in a radial direction at a part of the tip of the wire 2 is formed in a slit shape along the length direction with one end being released at the tip of the wire. In the insertion space 3, a plurality of brush materials 4 are arranged so as to be orthogonal to the length direction of the wire 2, and the central portion is mounted.

  That is, one end portion of the insertion hollow portion 3 is divided into two in a so-called crack shape and is released to the tip of the wire 2 (see FIG. 1A), and a plurality of brush materials 4 are removed from the tip notch portion. It is inserted (see FIG. 1B), and the wire 2 is twisted in a spiral shape while holding the central portion. And the twisting brush 1 can be formed by fully twisting the said insertion space part 3 (refer FIG.1 (c)).

  As the brush material 4, any one or a combination of synthetic resin wires, metal wires, biodegradable wires, plant fibers, animal fibers, and the like can be used.

  And as a synthetic resin wire, nylon, vinyl chloride, polypropylene, biodegradable plastic wire and the like can be exemplified, and as a metal wire, stainless steel, piano wire, iron wire, copper wire, etc., as plant fiber, Pakin, palm, etc., and pig hair, horse hair, eyelash, etc. are used as animal fibers, respectively.

  These brush materials 4 can also be used with abrasive grains mixed therein. Examples of the abrasive grains include metal powders such as stainless powder, gold powder, and titanium powder, diamond powder, ceramic powder, and inorganic powder. The material 4 is mixed.

  Now, as described above, a plurality of brush materials 4 are mounted in the insertion space 3 of the wire 2 and the wire 2 is twisted in a spiral shape so that the brush material 4 is arranged in a spiral shape (FIG. 1C). See) and the twisting brush 1 is constructed.

  Here, since there is only one wire 2 serving as the central axis of the twisting brush 1, the twisting brush 1 itself becomes extremely thin and can be easily inserted into a pipe or hole having a small diameter, so that deburring or polishing treatment can be performed. Etc. can be performed reliably and easily.

  What kind of material should be used as the brush material 4, whether to use a plurality of types, and in the case of a plurality of combinations thereof, the material of the workpiece to be processed such as deburring or polishing, It is determined according to the processing purpose. The determination of whether or not to mix abrasive grains in the brush material 4 and what kind of abrasive grains to use is the same.

  Although the present invention has been described based on the embodiments shown in the drawings, the present invention is not limited to the above-described embodiments, and may be implemented in any way as long as the configuration described in the claims is not changed. Can do.

1 shows an embodiment of the present invention, (a) is a perspective view of a wire, (b) is a perspective view of a state where a brush material is inserted into an insertion space of the wire, and (c) is a state where a twisted brush is formed by twisting. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Twist brush 2 Wire material 3 Insertion empty part 4 Brush material

Claims (3)

An insertion hollow portion of a brush material that penetrates in the radial direction is formed in a part of the tip of the metallic wire rod in a slit shape along the length direction with one end portion being released at the tip of the wire rod, and the insertion In the empty part, a plurality of brush materials are arranged so as to be orthogonal to the length direction of the wire, and the central part is attached, and the slit-like insertion empty part attached with the wire is spirally twisted, A twist brush comprising the brush materials arranged in a spiral. The twist brush according to claim 1, wherein the brush material is one or more of resin wire, metal wire, biodegradable wire, plant fiber, animal fiber, and the like. The twist brush according to claim 2, wherein abrasive grains are mixed in the brush material.

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