JP2017086741A - Polishing-brushing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polishing-brushing tool that can perform the work for applying brushing in a pipe and further has high work efficiency, is suitable for precision machining and can give inner surface machining of the pipe such as bent pipes.SOLUTION: A polishing-brushing tool has a polishing-brushing tool body 8 comprising: a polishing-brushing linear member bundle assembly 5 integrally connected while rotating and twisting a polishing-brushing linear member bundle 10 in a state of bundling multiple polishing-brushing linear members 9 comprising resin filaments with abrasive particles in an axis circumference direction around a central line of the polishing-brushing linear member bundle 10; a fixing unit 6 for fixing one end of the polishing-brushing linear member bundle assembly 5; and a polishing-brushing working unit 7 formed by the other end of the polishing-brushing linear member bundle assembly 5. The fixing unit 6 is rotated around the central line of the polishing-brushing linear member bundle assembly 5 in the axis circumference direction, and the polishing-brushing working unit 7 is brought into abutment with the inner circumferential surface of a polishing-brushing object pipe 4, and thereby the polishing-brushing work of the inner circumferential surface of the polishing-brushing object pipe 4 is performed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a polishing tool capable of brushing an inner peripheral surface portion of a pipe including a cylindrical body made of metal or non-ferrous metal.

  In general, a rotating brush that has excellent polishing ability and a good finished surface can be used as a tool to polish and remove metal working surfaces and welds, and to polish and remove burrs and rust generated on metal surfaces. Many are used (refer patent document 1). However, this type of conventional rotating brush cannot perform brushing such as polishing, grinding, deburring, rust removal, and paint peeling on the inner peripheral surface of the metal pipe.

  Therefore, as an example of a brush for cleaning the inside of a pipe, for example, a brush in which a brush body is formed by bundling both ends of a plurality of wires twisted with a triangular wire having a triangular cross-sectional shape is developed. Yes. In this brush, a support shaft of a metal rod is disposed at the axial center portion of the brush body, and both ends of a plurality of wires each having a triangular line twisted are bundled at both ends of the support shaft. An intermediate portion between both ends of each wire is curved radially in a direction away from the support shaft.

  When this brush is used, a brush body having a diameter substantially the same as the inner diameter of the pipe is inserted into the pipe, and the base end portion of the brush body is attached to an electric drill or the like and rotated. Alternatively, the brush body may be reciprocated in the axial direction of the pipe. Thereby, it has the structure which brushes to the internal peripheral surface part of a metal pipe by making the corner | angular part of the triangular wire of a brush contact and grind | in contact with the internal peripheral surface part of a metal pipe.

Japanese Patent Laid-Open No. 8-131258

  The conventional brush that cleans the inside of a pipe is shaped so that the triangular wire of the metal wire expands radially, so the outer diameter of the brush must be physically smaller than the inner diameter of the pipe. If you do not work. In order to facilitate the work, it is necessary to increase the clearance between the pipe inner diameter and the brush outer diameter. Therefore, it is difficult to make the brush uniformly contact the entire inner surface of the pipe in the inner surface processing of the pipe, and abundant experience is required to perform the processing evenly. Furthermore, since the corners of the triangular wire of the brush are in contact with the inner surface of the pipe, the contact portion between the inner surface of the pipe and the brush is a point contact, so that the work efficiency is low.

  In addition, the brush using the metal wire having the above-described conventional configuration cannot change the outer diameter of the brush. Furthermore, since there is a possibility that a lot of scratches may be made on the inner surface of the pipe after the insertion until the brush is inserted into the processing portion of the pipe, it is not suitable for precise processing and the demand is limited.

  Further, since the support shaft of the metal rod is arranged at the shaft center portion of the brush body, the brush body has high rigidity, and for example, inner surface processing of a pipe such as a curved curved pipe cannot be performed.

  The present invention has been made paying attention to the above circumstances. The purpose of the present invention is to provide a polishing tool that can easily perform a brushing process in a pipe, has high work efficiency, and is suitable for precise processing. It is to provide.

The cleaning tool according to an aspect of the present invention includes a cleaning tool main body including a cleaning linear body bundle assembly, a fixed portion, and a cleaning working portion. The scouring linear bundle is a center of the scouring linear bundle in which a plurality of scouring linear bodies made of resin filaments containing abrasive grains are bundled together. It is integrally joined in a state where it is twisted by rotating around the axis around the line. The fixing portion fixes one end portion of the linear member bundle assembly for cleaning. The scouring working part is formed by the other end of the scouring linear body bundle assembly. The fixed part is rotated in the direction around the axis about the center line of the squeezed linear bundle bundle assembly, and the scouring working part is brought into contact with the inner peripheral surface of the pipe to be scoured, so The inner peripheral surface of the target pipe is cleaned.
In the scouring tool having the above-described configuration, after the scouring working unit is inserted into the metal pipe, the scouring working unit is mainly rotated to perform a brushing process on the metal pipe. At this time, by rotating the scouring working part at a high speed, the squeezed linear body bundle assembly of the scouring working part can be expanded in the radial direction of the pipe by centrifugal force. The linear member bundle assembly for scouring can be brought into contact with the entire inner peripheral surface portion. This makes it possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, and paint peeling on the inner peripheral surface of the metal pipe.

Preferably, the scouring linear body bundle assembly is bonded to the first scouring wire in a state in which the twisting direction of the scouring linear body bundle coincides with the rotation direction of the scouring working unit. A second scouring line joined with the sweeping linear body bundle assembly and the squeezing linear body bundle in a state in which the twisting direction of the scouring linear body bundle is opposite to the rotation direction of the scouring working unit. It is either one of the bundle of bundles.
Preferably, the fixing portion includes a metal case, and the metal case includes a caulking fixing portion that caulks and fixes the one end portion of the linear member bundle assembly for cleaning.
Preferably, the scouring tool body covers the periphery of the scouring linear body bundle assembly, and the scouring linear body bundle assembly is formed along the scouring linear body bundle assembly. An axially movable sleeve, and one end of the sleeve has an extended end extending toward the fixed portion, and the other end of the sleeve is in the axial direction of the sleeve. A cover part that can move to a use position that exposes the work part for cleaning and a work position that exposes the work part for cleaning is provided. An operation unit that moves in a direction is provided.

In another aspect of the present invention, a linear scouring linear body made of a resin filament containing abrasive grains, a fixing portion that fixes one end of the scouring linear body, and the scouring line A working part for scouring formed by the other end of the rod-like body, and the scouring working part by rotating the fixed part around an axis about the center line of the scouring linear body A polishing tool characterized in that the abrading operation is performed on the inner peripheral surface of the pipe to be cleaned by bringing the nozzle into contact with the inner peripheral surface of the pipe to be cleaned.
In the scouring tool having the above-described configuration, after the scouring working unit is inserted into the metal pipe, the scouring working unit is mainly rotated to perform a brushing process on the metal pipe. At this time, by rotating the scouring working part at high speed, the scouring linear member of the scouring working part can be moved in the direction of expanding in the radial direction of the pipe by centrifugal force. The linear member bundle assembly for scouring can be brought into contact with the entire inner peripheral surface portion. This makes it possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, and paint peeling on the inner peripheral surface of the metal pipe.

  According to the present invention, it is possible to easily perform a brushing process in a pipe, and it is highly efficient and suitable for a precise process, and it is possible to perform an inner surface process of a pipe such as a curved pipe. A tool can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS The external appearance of the cleaning tool of the 1st Embodiment of this invention is shown, (A) is a perspective view which shows the Z-polishing brush, (B) is a perspective view which shows the S-polishing brush. The longitudinal cross-sectional view of the principal part which shows an example of the use condition of the Z winding polishing brush of the polishing tool of 1st Embodiment. The longitudinal cross-sectional view of the principal part which shows an example of the use condition of the S winding polishing brush of the polishing tool of 1st Embodiment. The 2nd Embodiment of this invention is shown, (A) is a longitudinal cross-sectional view of the principal part which shows the state which moved the cover part of the sleeve with which the Z winding polishing brush of the cleaning tool was moved to the cover position. (B) is a longitudinal cross-sectional view of the principal part which shows the state which moved the cover part of the sleeve to the use position. The longitudinal cross-sectional view of the principal part which shows the cleaning tool of the 3rd Embodiment of this invention. The longitudinal cross-sectional view of the principal part which shows an example of the use condition of the cleaning tool of 3rd Embodiment.

[First Embodiment]
(Constitution)
1A and 1B to FIG. 3 show a first embodiment of the present invention. 1A and 1B show the appearance of a scouring tool 1. FIG. 1A is a perspective view showing a Z-winding brush 2 and FIG. 1B is a perspective view showing an S-winding brush 3.

  2 and 3 show an example of the usage state of the polishing tool 1. FIG. 2 is a longitudinal sectional view of the main part showing a state in which the Z winding polishing brush 2 of the polishing tool 1 is inserted into the metal pipe 4 to be processed, and FIG. It is a longitudinal cross-sectional view of the principal part which shows the state which inserted the S winding polishing brush 3 of the tool 1 for tools.

  The polishing tool 1 of the present embodiment is a tool that can perform brushing on the inner peripheral surface portion of a metal pipe 4 including a cylindrical body such as a metal to be processed or a non-ferrous metal. The polishing tool 1 of this embodiment has at least one of a Z-winding brush 2 shown in FIG. 1A or an S-winding brush 3 shown in FIG.

  The Z-winding brush 2 shown in FIG. 1 (A) includes a cleaning tool body 8 including a linear body bundle assembly 5 for cleaning, a fixed portion 6, and a working portion 7 for cleaning. Have. The scouring linear body bundle assembly 5 is a scouring wire in a state where a plurality of wire-like scouring linear bodies 9 made of resin filaments containing abrasive grains are bundled together in the present embodiment. The bundles 10 are integrally joined in a state in which the bundles 10 are rotated and twisted around the center line of the scouring linear bundle 10 in the direction of the left-handed axis. Abrading linear body 9 is made of resin material such as “N-GRIT” or “Negrit” (registered trademark) made of nylon and abrasive grains (grit) as brush filaments. It consists of a filament.

  The material for the scouring linear body 9 of the present embodiment is obtained by mixing nylon and silicon carbide grit, or nylon and aluminum oxide, and extruding them as brush filaments. Since the sharp edges of the grit mixed in the base material nylon are randomly fixed to all surfaces, the polishing linear body 9 reliably captures any shape of the work surface and improves the polishing performance. It has been confirmed that this is demonstrated. Further, the scouring linear member 9 of the present embodiment is a resin wire containing abrasive grains excellent in heat resistance (melting point: 217 ° C.), and can withstand work in places where it is difficult to release frictional heat, such as narrow work. And welding to the contact surface can be prevented.

  In this embodiment, the scoured linear bundle 10 in a twisted state is heated to, for example, about the melting temperature of the resin material, and then rapidly cooled in a cooling liquid and integrally joined to form a twisted shape. The work to join is done. As a result, the shape of the scouring linear body bundle assembly 5 is maintained in an integrated state in the twisted linear body bundle 10 for scouring. Even if the hands are released, twisting of the linear body bundle 10 for wiping is not easily unwound.

  The fixing part 6 has a metal case 11 for fixing the base end part of the linear body bundle assembly 5 for scouring. The metal case 11 has a bottomed cylindrical case body 11a. A shaft hole 11 b is formed in the shaft portion of the case body 11 a of the metal case 11. In the state where one end portion of the linear member bundle assembly 5 for polishing is inserted and fitted into the shaft hole 11b of the metal case 11, for example, it is fixed with an adhesive or fixed by caulking integrally. Is done. In addition, the terminal part of the case main body 11a of the metal case 11 has a round bar-like connecting part 11c having an outer diameter (for example, a diameter of 6 mm) that can be engaged with and disengaged from a chuck part (not shown) of a rotation driving part 12 such as a grinder described later. It is fixed.

  The cleaning working unit 7 is formed by the tip of the linear member bundle assembly 5 for cleaning. Here, the Z-winding blast brush 2 is a linear body for scouring in a state of being wound in a direction opposite to the rotation direction (clockwise direction, clockwise direction) of a rotation driving unit 12 such as a grinder described later. The bundle 10 is twisted and joined (second scouring linear bundle bundle 5a). In addition, the S-winding brush 3 is twisted and joined to the linear member bundle 10 for scouring in a state of being wound in a direction coinciding with the rotational direction of the rotary drive unit 12 such as a grinder described later. (First scouring linear body bundle assembly 5b).

  The S-winding brush 3 shown in FIG. 1B is configured in substantially the same manner as the Z-winding brush 2. Therefore, in FIG. 1 (B), the same parts as those of the Z winding polishing brush 2 are denoted by the same reference numerals, and the description thereof is omitted. In the S-winding brush 3, the portion different from the Z-winding brush 2 is the twisting direction of the wire bundle assembly 5 for cleaning. That is, in the S-winding brush 3, the scouring linear body bundle 10, in which six scouring linear bodies 9 are bundled, is wound clockwise around the center line of the scouring linear body bundle 10. Are integrally joined in a twisted state by rotating in the direction around the axis. The rest of the configuration is the same as that of the Z-winding brush 2.

(Function)
Next, the operation of the polishing tool 1 having the above configuration will be described. When using the scouring tool 1 of the present embodiment, as shown in FIGS. 2 and 3, the scouring tool 1 is inserted from the opening end on one end side of the metal pipe 4 to be processed. In addition, it is preferable that the outer diameter of the polishing working unit 7 of the polishing tool 1 used at this time is smaller than the inner diameter of the metal pipe 4. FIG. 2 shows a state where the working part 7 for the Z-winding brush 2 is inserted into the metal pipe 4, and FIG. 3 shows the state where the S-winding brush 3 is polished inside the metal pipe 4. The state which inserted the cleaning operation | work part 7 is shown.

  The fixed portion 6 of the Z-winding brush 2 is disposed outside the metal pipe 4. The connecting portion 11c of the fixing portion 6 of the scouring brush 2 is set in a state where it is engaged and connected to the chuck portion of the rotation driving portion 12 such as a grinder. Similarly, the fixed portion 6 of the S-winding brush 3 is disposed outside the metal pipe 4, and the connecting portion 11c of the fixed portion 6 of the polishing brush 3 is, for example, a chuck of the rotary drive unit 12 such as a grinder. It is set in a state of being engaged with and connected to the part.

(Cleaning work of Z winding polishing brush 2)
The fixed portion 6 of the Z-winding brush 2 is rotationally driven at a high speed of, for example, about 8000 rpm in the clockwise direction with respect to the central axis direction of the polishing brush 2 by the rotation driving unit 12. In this state, the polishing working unit 7 of the polishing brush 2 is driven to reciprocate in the axial direction of the metal pipe 4 while rotating at a high speed. In this case, the Z-winding brush 2 is twisted by winding the wiping wire bundle 10 in the direction opposite to the rotation direction of the rotation drive unit 12. Therefore, if the tip of the scouring working unit 7 is caught by contact with the inner wall surface of the metal pipe 4, for example, when the scouring working unit 7 rotates at a high speed, the scouring line is generated at the tip of the scouring working unit 7. There is a possibility that twisting of the bundle of bundles 10 is unwound. In this case, the portion of the tip of the scouring working unit 7 where the strands of the scouring linear body bundle 10 are untwisted is a metal pipe due to the centrifugal force generated by the rotation of the scouring working unit 7 as shown in FIG. 4 is deformed in the direction of radially expanding in the radial direction. Therefore, each scouring linear body 9 of the scouring linear body bundle 10 comes into contact with the inner wall surface of the metal pipe 4 and the metal pipe 4 is brushed. Thereby, it is possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, paint peeling, and the like on the inner peripheral surface portion of the metal pipe 4.

  Further, the tip portion of the scouring working portion 7 is deformed in a direction in which the stranded wire 9 for untwisting is expanded radially in the radial direction of the metal pipe 4. The scouring linear body 9 can be brought into contact over a wide range in the axial direction of the inner peripheral surface portion 4a. Thereby, it is possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, and paint peeling on the inner peripheral surface portion 4a of the metal pipe 4 in a short time. Further, cooling air is generated inside the metal pipe 4 due to the high speed rotation of the scouring working unit 7, and the flow of this cooling air and the scouring working unit 7 are reciprocated in the axial direction, thereby generating frictional heat. It is possible to suppress the cleaning working unit 7 from being heated to a high temperature state.

  Further, as shown in FIG. 2, when the side hole 4 b is opened from the outside on the side surface of the metal pipe 4 that is a workpiece, the end of the opening of the side hole 4 b of the metal pipe 4 always protrudes to the inner side of the pipe 4. A cross burr 13 is formed. The cross burr 13 projecting from the edge of the opening of the horizontal hole 4b to the inside of the pipe 4 can also be scraped and removed by the scouring working part 7 of the scouring tool 1 of the present embodiment.

(Scouring work of S winding brush 3)
The fixed portion 6 of the S-winding brush 3 is rotationally driven at a high speed of about 8000 rpm, for example, in the clockwise direction with respect to the central axis direction of the polishing brush 3 by the rotation driving unit 12. In this state, the polishing working unit 7 of the polishing brush 3 is driven to reciprocate in the axial direction of the metal pipe 4 while rotating at a high speed. In this case, the S winding polishing brush 3 is twisted in a state in which the twisting linear bundle 10 is wound in the same direction as the rotation direction of the rotation drive unit 12. Therefore, even when the scouring working unit 7 is rotating at a high speed, the squeezing linear body bundle 10 is not untwisted at the tip of the scouring working unit 7. Therefore, in this case, the whole of the scouring linear bundle 10 is held at the tip of the scouring working unit 7 in an integrated state. Therefore, the entire linear wire bundle for scouring 10 is deformed in an outwardly curved direction while being integrated as shown by a solid line in FIG. 3 due to the centrifugal force generated by the rotation of the scouring working unit 7. In this case, the outer peripheral surface portion of the scouring linear bundle 10 is in contact with the inner wall surface of the metal pipe 4 and the metal pipe 4 is brushed. Thereby, it is possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, paint peeling, etc. on the inner peripheral surface portion 4a of the metal pipe 4.

  Further, the cross burr 13 protruding to the inner side of the pipe 4 at the edge of the opening of the lateral hole 4b on the side surface of the metal pipe 4 is scraped in the S-winding brush 3 as in the Z-winding brush 2. Can be removed.

(effect)
Therefore, the polishing tool 1 having the above configuration has the following effects. That is, in the scouring tool 1 of this embodiment, the scouring linear body bundle 10 in which a plurality of wire-like scouring linear bodies 9 made of abrasive resin filaments are bundled is twisted together. The scouring linear body bundle assembly 5 which is integrally joined in a state is provided. A cleaning working portion 7 is formed by the tip portion of the linear member bundle assembly 5 for cleaning. Then, for example, by rotating the scouring working unit 7 at a high speed of about 8000 rpm, the scouring linear body 9 of the Z winding scouring brush 2 is formed on the entire inner peripheral surface part 4a of the metal pipe 4, The outer peripheral surface portion of the scouring linear brush 10 of the S winding polishing brush 3 can be brought into contact. By reciprocating in the axial direction in this state, it is possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, and paint peeling on the inner peripheral surface portion 4a of the metal pipe 4.

  Further, in the S-winding brush 3 of the present embodiment, by using the cleaning tool 1 whose outer diameter of the working part 7 for cleaning is smaller than the inner diameter of the metal pipe 4, the inside of the metal pipe 4 is used. The operation of inserting the cleaning tool 1 can be easily performed.

  Further, in the Z-winding brush 2, the tip of the scouring working portion 7 during the scouring operation is such that the scouring linear body 9 of the untwisted portion is radially in the radial direction of the metal pipe 4. Deforms in the direction of expansion. Therefore, the side surface portion of the scouring linear body 9 at the portion where the twisting is unwound is elastically deformed so as to be in line contact with the inner peripheral surface portion 4 a of the pipe 4. At this time, a wide range of the inner peripheral surface portion 4a of the pipe 4 can be brushed by the side surface portion of the linear member 9 for polishing which is elastically deformed so as to be in line contact with the inner peripheral surface portion 4a of the pipe 4, and the brushing processing is performed. Can improve the work efficiency.

Further, by increasing the number of revolutions of the scouring working unit 7, the portion of the scouring linear body 9 where the twisting of the scouring working unit 7 is unwound by the centrifugal force spreads radially, and the inner diameter of the pipe 4 is increased. It can process even large ones. At this time, since the tip of the cleaning working unit 7 spreads greatly in proportion to the length of the untwisted portion of the cleaning working unit 7, a large number of Z-winding cleaning brushes 2 can be used. It is possible to adapt to the pipe 4 of the inner diameter size, and the economic efficiency is greatly improved.
Further, in the present embodiment, the scouring linear body bundle assembly 5 is a scouring line in which six wire-shaped scouring linear bodies 9 made of abrasive resin filaments are bundled. Although the configuration in which the bundle of bundles 10 is provided is shown, the present invention is not limited to this. For example, the overall outer diameter of the scouring linear body bundle 10 can be adjusted by changing the number of the scouring linear body 9 bundled. For this reason, the number of the linear bodies 9 for scouring can be adjusted and used according to the inner diameter of the metal pipe 4 to be processed. Moreover, the thickness, length, hardness, etc. of the scouring linear body 9 to be used can be adjusted according to the conditions such as the inner diameter of the metal pipe 4 to be processed and the use site.

[Second Embodiment]
(Constitution)
4A and 4B show a second embodiment of the present invention. This embodiment is a modification in which the configuration of the Z winding polishing brush 2 of the cleaning tool 1 of the first embodiment (see FIGS. 1A, 1B to 3) is changed as follows. is there. 4A and 4B, the same portions as those in FIGS. 1A and 1B to FIG. 3 are denoted by the same reference numerals, and the description thereof is omitted.

  The scouring tool 21 of this embodiment covers the periphery of the scouring linear body bundle assembly 5 on the scouring tool body 8 of the Z winding scouring brush 2, and the scouring linear body bundle joint is joined. A cylindrical sleeve 22 is provided that is movable along the body 5 in the axial direction of the linear body bundle assembly 5 for cleaning. The base end portion of the sleeve 22 has an extended end portion 23 that extends toward the fixed portion 6. The extended end portion 23 has a large-diameter knob portion (operation portion) 24 that covers the fixed portion 6 and is movable along the fixed portion 6 in the axial direction of the fixed portion 6.

  The tip of the sleeve 22 has a cover position (see FIG. 4A) that covers the periphery of the scouring working unit 7 as the sleeve 22 moves in the axial direction, and a use position (see FIG. 4A) that exposes the scouring working unit 7. 4 (B)), the cover portion 25 is movable. Then, by moving the knob portion 24 in the axial direction, the sleeve 22 is moved in the axial direction, and the cover portion 25 is moved to the cover position shown in FIG. 4 (A) and the use position shown in FIG. 4 (B). Switching operation can be performed. The sleeve 22 is formed of a hard resin pipe having high rigidity, for example, ABS resin.

(Action / Effect)
Next, the operation of the above configuration will be described. When the polishing tool 21 of the present embodiment is used, the cover portion 25 of the sleeve 22 is moved to a cover position that covers the periphery of the cleaning working portion 7 as shown in FIG. Thus, even when the twisting of the scouring linear bundle 10 is unwound at the tip of the scouring working part 7 of the Z-winding scouring brush 2, the tip part of the scouring working part 7 is moved to the sleeve 22. It can be accommodated in the cover part 25. Therefore, even when the scouring linear body bundle 10 is untwisted at the tip of the scouring working portion 7 of the scouring brush 2 during the previous use and the scouring linear body 9 spreads in the radial direction. In the next use, it is possible to forcibly reduce the outer diameter of the scouring linear bundle 10 at the tip of the scouring working unit 7 to the diameter of the cover unit 25. As a result, it is possible to easily perform the operation of inserting the tip end portion of the polishing working portion 7 of the Z-winding brush 2 into the metal pipe 4 to be processed during the second and subsequent operations.

  Further, by switching the cover portion 25 of the sleeve 22 to the use position as shown in FIG. 4 (B), the wiping line shape is formed at the tip of the blasting working portion 7 of the Z winding blasting brush 2. The portion where the body bundle 10 is untwisted can be exposed. In this state, by increasing the number of revolutions of the scouring working unit 7, the portion of the scouring linear body 9 where the twisting of the scouring working unit 7 is unwound by the centrifugal force spreads radially, and the pipe 4 Capable of machining even large diameters.

  Further, the sleeve 22 can increase the strength of the shaft portion of the polishing working portion 7 of the polishing brush 2. Therefore, vibrations such as rolling of the shaft portion of the cleaning working portion 7 of the scouring brush 2 can be suppressed during the grinding work, and a stable grinding work can be performed. Further, since the sleeve 22 is formed of a hard resin pipe, the tip portion of the sleeve 22 can be excised when the tip portion of the polishing work portion 7 of the brush 2 is worn out and worn away. . Thereby, the length of the shaft part of the scouring working part 7 of the scouring brush 2 can be adjusted, and the shaft part of the scouring working part 7 can be effectively used up to the rear end part.

[Third Embodiment]
(Constitution)
5 and 6 show a third embodiment of the present invention. FIG. 5 is a vertical cross-sectional view of the main part showing the scouring tool 31 of the present embodiment, and FIG. 6 is a vertical cross-sectional view of the main part showing an example of the usage state of the scouring tool 31.

  The scouring tool 31 of this embodiment includes a linear scouring linear body 32 made of a resin filament containing abrasive grains, a fixing portion 33 for fixing one end of the scouring linear body 32, and a scouring. And a scouring working unit 34 formed by the other end of the linear member 32.

  The scouring linear body 32 is the same as the single wire scouring linear body 9 made of the resin filament containing abrasive grains of the first embodiment. The fixing portion 33 has a metal case 33 a that fixes the base end portion of the scouring linear body 32. The metal case 33a has a bottomed cylindrical case body 33b. A shaft hole 33c is formed in the shaft portion of the case main body 33b of the metal case 33a. For example, fixing with an adhesive or caulking and fixing is performed in a state where one end portion of the linear body for scouring 32 is inserted and fitted into the shaft hole 33c of the metal case 33a. .

(Function)
Next, the operation of the above configuration will be described. When using the scouring tool 31 of this embodiment, the scouring tool 31 is inserted from the opening end on one end side of the metal pipe 4 as shown in FIG. The fixing portion 33 of the scouring linear body 32 is disposed outside the metal pipe 4. The fixed portion 33 of the scouring linear body 32 is set in a state of being connected to the rotary drive unit 12 such as a grinder.

  During the cleaning operation of the cleaning tool 31, the rotation drive unit 12 causes the fixed portion 33 of the cleaning linear body 32 to rotate clockwise with respect to the central axis direction of the cleaning linear body 32, for example, about 8000 rpm. Driven at high speed. In this state, the scouring working unit 34 of the scouring linear body 32 is driven to reciprocate in the axial direction of the metal pipe 4 while rotating at a high speed.

  At this time, due to the centrifugal force generated by the rotation of the scouring working unit 34, the entire scouring linear body 32 is deformed in a direction that curves outward as indicated by a solid line in FIG. In this case, the outer peripheral surface portion of the scouring linear body 32 comes into contact with the inner wall surface of the metal pipe 4 and the metal pipe 4 is brushed. Thereby, it is possible to easily perform brushing processing such as polishing, grinding, deburring, rust removal, paint peeling, etc. on the inner peripheral surface portion 4a of the metal pipe 4.

(effect)
Accordingly, the same effect as that of the cleaning tool 1 of the first embodiment can be obtained by the cleaning tool 31 of the present embodiment. In addition, the scouring tool 31 of the present embodiment uses a single wire-like scouring linear body 32, and therefore has a particularly high elasticity. Therefore, since it can be easily inserted into a pipe such as a curved curved pipe, the metal pipe 4 to be processed is not limited to a straight straight pipe, and the inner surface of the pipe such as a curved curved pipe is processed. You can also.

  The fixing portion 33 is not limited to the metal case 33a, and may be a resin pipe. This resin pipe is preferably formed of a hard resin pipe having high rigidity, for example, ABS resin.

As an example of work of this embodiment,
(1) Material (S48C) crankshaft inner diameter tolerance deburring and polishing (2) Material (FC material) camshaft inner diameter tolerance deburring and polishing (3) Material (FCD material) power steering gear case parts Internal deburring (4) Internal deburring of piston of material (ADC12), Polishing (5) Internal diameter tolerance deburring of transmission of material (ADC12), Internal deburring of polishing (6) Hydraulic valve of material (FGD450), Polishing (7) Deburring the inner diameter of the air cylinder of the material (ADC12), polishing (8) Inner diameter polishing of various metal pipes of the material (SUS, aluminum, iron).

  Furthermore, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the type of abrasive grains to be mixed with the resin material can be appropriately selectively selected according to the target portion.

    DESCRIPTION OF SYMBOLS 1 ... Cleaning tool, 2 ... Z winding polishing brush, 3 ... S winding polishing brush, 4 ... Metal pipe, 4a ... Inner peripheral surface part, 4b ... Horizontal hole, 5 ... Cleaning linear body bundle joining Body, 5a ... second linear body bundle assembly for scouring, 5b ... first linear body bundle assembly for scouring, 6 ... fixed part, 7 ... working part for scouring, 8 ... for scouring Tool body, 9 ... Linear body for scouring, 10 ... Linear body bundle for scouring, 11 ... Metal case, 11a ... Main body of case, 11b ... Shaft hole, 11c ... Connection part, 12 ... Rotation drive part, 13 ... Crossing burrs, 21 ... scouring tool, 22 ... sleeve, 23 ... extended end, 24 ... knob, 25 ... cover, 31 ... scouring tool, 32 ... linear wire for scouring, 33 ... fixed Part, 33a ... metal case, 33b ... case main body, 33c ... shaft hole, 34 ... working part for scouring.

Claims (5)

Twist the scouring linear body bundle in a state where a plurality of scouring linear bodies made of resin filaments containing abrasive grains are bundled by rotating around the center line of the scouring linear body bundle about the axis. A linear bundle member for scouring that is integrally joined in a combined state;
A fixing part for fixing one end of the linear body bundle assembly for cleaning,
A cleaning tool body comprising a cleaning working part formed by the other end of the linear body bundle assembly for cleaning,
In the state where the fixed portion is rotated in the direction around the axis around the center line of the linear member bundle assembly for cleaning, the cleaning working portion is brought into contact with the inner peripheral surface of the pipe to be cleaned. A cleaning tool characterized by performing a polishing operation on the inner peripheral surface of a pipe to be cleaned.   The scouring wire bundle assembly is a first scouring wire joined in a state in which the twisting direction of the scouring wire bundle is aligned with the rotation direction of the scouring working unit. A second bundle of linear bodies for scouring joined together in a state in which the twisting direction of the linear body bundle for scouring is directed in the direction opposite to the rotation direction of the working part for scouring The polishing tool according to claim 1, which is one of a joined body. The fixing portion has a metal case,
The said metal case has the crimp fixing part which crimps and fixes the said one end part of the said linear body bundle | bond_body | zygote assembly for cleaning integrally, The cleaning tool of Claim 1 characterized by the above-mentioned. The cleaning tool main body covers the periphery of the linear body bundle assembly for cleaning, and extends in the axial direction of the linear body bundle assembly for cleaning along the linear body bundle assembly for cleaning. A movable sleeve,
One end portion of the sleeve has an extended end portion extended to the fixed portion side,
The other end portion of the sleeve has a cover portion that is movable to a cover position that covers the periphery of the cleaning working portion and a use position that exposes the cleaning working portion as the sleeve moves in the axial direction. Have
The said extending end part has an operation part which moves the said sleeve to the said axial direction, The polishing tool of Claim 1 characterized by the above-mentioned. A linear line for polishing consisting of resin filaments containing abrasive grains;
A fixing part for fixing one end of the linear body for scouring;
A cleaning working portion formed by the other end of the linear wire for cleaning,
The scouring target is brought into contact with the inner peripheral surface of the scouring target pipe in a state where the fixed part is rotated in the direction around the axis around the center line of the scouring linear body. A cleaning tool characterized by performing a polishing operation on the inner peripheral surface of a pipe.