JP2006000949A - Rotary polishing roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary polishing roll which is formed of an inner core pipe, an outer pipe, and brushes or buffs mounted on the outer pipe, wherein the rotary polishing roll has a fixing structure that copes with the increases of length and weight of the pipes and achieves firm fixture between the inner core pipe and the outer pipe. <P>SOLUTION: The inner core pipe is formed of a phenol resin while the outer pipe is formed of a synthetic resin other than the phenol resin, and the inner core pipe is squeezed into the outer pipe with a fitting tolerance secured between an outer diameter of the inner core pipe and an inner diameter of the outer pipe. The inner core pipe has grooves uniformly formed on an outer surface thereof, and an adhesive is filled in a gap between the inner core pipe and the outer pipe. At the time of manufacturing the polishing roll, the inner core pipe and the outer pipe have predetermined hardnesses, respectively, and the former is squeezed into the latter with a predetermined fitting accuracy, so that a squeezing force is specified (an excessive force is not required). As a result a mechanical force is easily introduced, and therefore manufacturing of the polishing roll is quickly and positively achieved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In this invention, a brush or a non-woven fabric abrasive (buff) is attached to the outer periphery of the cylindrical body, and is rotated in conjunction with the rotation shaft, and the rotation is used to perform operations such as polishing on a workpiece such as a printed circuit board. In particular, the present invention relates to an improvement in the mounting structure of an inner core (nisin) tube serving as a mounting body to a rotating shaft and an outer tube serving as a brush / buff mounting body.

In this type of rotary polishing roll, generally, as shown in FIG. 13, a cylindrical body portion is formed from an inner core tube a serving as a mounting body to a rotating shaft and an outer tube b serving as a brush / buff mounting body. As shown in the figure, it is rotationally driven in conjunction with the rotating shaft e via an end wheel flange c and an intermediate wheel flange d.
Therefore, in the currently split type, it is sufficient that the inner core tube and the outer tube are fixed with an adhesive. On the other hand, when the cylindrical body portion is an integral type, a strong fitting method between the inner core tube and the outer tube is employed (for example, see Patent Documents 1 and 2). That is, when the inner core tube and the outer tube are in a loosely inserted state, an adhesive is used, but the adhesive filling the gap between the inner core tube and the outer tube is difficult to be uniformly filled, and the adhesive force The reliability for is low.
In References 1 and 2, due to the characteristics of these materials, the outer tube is fitted by shrinkage or the inner core tube is deformed.
In recent years, in this type of rotary polishing roll, the length and weight have been increased. However, depending on the fixing only by the adhesive or the fixing by the strong fitting method, the length and weight can be increased. It is not always perfect. That is, for the lengthening and weight increase, the fixing force by the adhesive is insufficient, and when the strong fitting method is adopted, the fitting operation becomes difficult.
Furthermore, there is a report that the outer tube and the inner core tube are detached when an impact is applied to the inner core tube due to a collision with the floor surface during handling (replacement, transport) of this rotary polishing roll. Has been made.
On the other hand, the so-called implantable polishing brush, which is made by driving the brush bundle into the brush planting hole drilled in the outer tube, is generally more dense (concentrated) than before, and its polishing performance is also satisfactory. However, further improvement in polishing performance is desired.
No. 8-5017 Japanese Patent Laid-Open No. 10-138153

The present invention has been made in view of the above circumstances, and in this type of rotary polishing roll, the inner core tube and the outer tube are more firmly fixed, and a fixing structure that can cope with an increase in length and weight is provided. The purpose is to provide.
Another object of the present invention is to improve the polishability of a polishing brush.
For this reason, the present invention pays attention to the hardness difference between the inner core tube and the outer tube, and further utilizes the deformation characteristics between the inner core tube and the outer tube, and the deformation in the outer diameter direction based on the elasticity of the outer tube. This is based on the knowledge that the object is achieved by maintaining the fitting accuracy with a predetermined fit and pushing the inner core tube into the outer tube.

Specifically, the rotary polishing roll of the present invention employs the following technical means.
The rotary polishing roll according to the present invention includes, as described in claim 1, an inner core tube that forms a rigid cylindrical body that is directly or via a wheel flange, and a synthetic resin that is externally fixed to the inner core tube. A polishing roll comprising an outer tube forming a cylindrical body made of, a polishing portion that performs a polishing action on the workpiece is disposed on the outer tube, and polishing by receiving a circumferential rotation drive from the rotating shaft,
The inner core tube and the outer tube are pressed and fitted with an outer diameter of the inner core tube and an inner diameter of the outer tube maintaining a fit tolerance due to an interference fit,
Concave grooves that maintain a constant width are formed substantially uniformly on the outer surface of the inner core tube,
An adhesive is filled between the inner core tube and the outer tube,
It is characterized by that.
In the above configuration,
a. The details of the dimensional relationship (tolerance) with the outer diameter of the inner core tube and the inner diameter of the outer tube will be described in more detail in the following embodiments, but in principle, an interference fit is not excluded and an intermediate fit is not excluded.
b. The ratio of the concave groove of the inner core tube is specifically shown in the following embodiment.
Furthermore, in the above configuration,
1) The inner core tube and the outer tube are fixed by auxiliary fixing portions at their tube ends,
1) -a. The auxiliary fixing portion is a screw formed by screwing in the tube axis direction across the inner core tube and the outer tube at the end surfaces at the end surfaces of the inner core tube and the outer tube having the same end surface, 1) -B. The auxiliary fixing portion is a screw formed by screwing in the tube radial direction across the inner core tube and the outer tube at the end portion of the inner core tube and the outer tube,
2) The inner core tube is made of phenol resin, and the outer tube is selected from polypropylene, polyethylene, ABS resin,
3) The polishing part is a brush,
4) The brush shall consist of a row of brushes in a series of brush bundles planted in the planting hole formed in the outer tube,
5) The brush rows should be spaced and arranged directly or spirally,
6) The polishing part should be buffed
Is an optional matter that is adopted as appropriate.

Note that a rotary polishing roll in which the inner core tube is replaced with an aluminum tube and the outer tube is selected from any of polypropylene, polyethylene, and ABS resin constitutes another invention. Also in this invention,
The above 1) (including 1) -a and 1) -b), 3) to 6) are items that are appropriately adopted.

(Function)
In this polishing roll, the inner core tube and the outer tube are pressed with a predetermined fitting accuracy, the hardness difference between the inner core tube and the outer tube and the deformation characteristics of both tubes, that is, the outer tube is deformed compared to the inner core tube. Due to the characteristics that are easily applied, the outer tube is deformed in the outer diameter direction based on the elasticity of the outer tube, and is firmly fixed by tightening to the inner core tube that retains rigidity. Further, the adhesive is effectively held in the concave groove on the outer surface of the inner core tube, maintains a predetermined area ratio, and a further fixing force can be obtained by the adhesive action.
Further, when the fitting diameter is equal, the fitting force between the inner core tube and the outer tube becomes weak, but since there is an adhesive action, a sufficient fixing force can be obtained.
By rotating the peripheral surface of this polishing roll, the brush rows implanted in the outer tube polish the surface of the work separately and exert an effective polishing action by the edge action of the abutting end.

In the production of this polishing roll, the inner core tube and the outer tube have a predetermined hardness, and the inner core tube and the outer tube maintain the predetermined fitting accuracy, so the pushing force is clarified (excessive force is not required) ), It is easy to introduce mechanical power, and production is performed quickly and reliably.
Further, the adhesive filled in the concave portion of the inner core tube is not affected by the pressing operation of the inner core tube and the outer tube, and the fixing action is performed simultaneously, thereby improving the production efficiency.
Also, according to the present polishing roll, as described above, the inner core tube and the outer tube can be firmly fixed (integrated), so that the separation of both tubes during handling and transportation is drastically reduced. Furthermore, there is no rattling between the inner core tube and the outer tube, the durability of the present polishing roll is improved, and the life of the product itself is prolonged.

An embodiment of a rotary polishing roll of the present invention will be described with reference to the drawings.
1 to 12 show an embodiment of a rotary polishing roll (hereinafter simply referred to as “polishing roll”) of the present invention, and show an application example (cylindrical polishing brush) to a brush mode. That is, FIG. 1 shows the entire longitudinal sectional configuration of the polishing roll R, and FIGS. 2 to 12 show the configuration of each part.

  As shown in FIG. 1 and FIG. 2, this polishing roll R is made of an inner core tube 1 forming a thin and hard cylindrical body, and a thick synthetic resin that is externally fitted to the inner core tube 1 and bonded and fixed thereto. And a polishing section 4 comprising a plurality of brush rows 3 implanted in the outer tube 2, and further assists in fixing the inner core tube 1 and the outer tube 2. The auxiliary fixing part 5 to be included is included.

Hereinafter, the detailed configuration of each part will be described.
Inner core tube 1 (See Figs. 1-6)
The inner core tube 1 forms a thin hard cylinder.
A phenol resin tube is suitable as the material. The phenolic resin tube is formed into a tubular shape by mixing a phenolic resin with a curing agent / filler, is tough and hard, has a very small inner / outer diameter tolerance, and has smooth inner and outer peripheral surfaces. This retains a constant inner diameter with a predetermined accuracy, has a slight elasticity as well as rigidity, and is familiar when attached to a rotationally driven flange wheel, as will be described later. Incidentally, the phenol resin (with filler) is a hard material having a specific gravity of 1.30 to 1.40 and a compressive strength of 200 to 400 kg / square cm.
In the present embodiment, the inner core tube 3 uses a phenol resin as a thermosetting resin. However, the inner core tube 3 does not hinder the use of other thermosetting synthetic resin materials and, in some cases, thermoplastic synthetic resin materials. Any other suitable material such as a metal may be used as long as it has equivalent functions (maintaining a constant inner / outer diameter with a predetermined accuracy and a predetermined rigidity).

(Concave groove 10)
A concave groove 10 having a constant depth and a constant width is engraved on the surface of the inner core tube 1 in a predetermined manner (ratio). In this embodiment, a mesh form is shown. That is, FIG. 4 is a developed view, in which the axial groove 10a and the circumferential groove 10b are engraved in a grid pattern (square).
More specifically (see FIG. 5), the groove 10 has a depth a (for example, 1.0 mm) and a width b (for example, 2.0 mm). The concave groove 10 is continuous, but may be discontinuous as long as other conditions (area ratio, equality) are satisfied.
The ratio of the concave groove 10 to the surface area is 5 to 50%. In the present embodiment, 30 to 40%, or around 30% shows a good value on a trial basis. In addition, these values (a, b, and area ratio) are a standard, and do not limit the present invention.

The concave groove may take other appropriate forms such as a spiral.
FIG. 6 is a developed view similar to FIG. 4, and 12 shows a spiral groove (single spiral mode). Reference numeral 13 denotes another spiral groove that intersects the spiral groove 12 (double spiral mode).

Outer tube 2 (See FIGS. 1 to 3 and FIGS. 8 to 10)
The outer tube 2 is a cylindrical body made of a synthetic resin having a predetermined thickness, and is fitted and fixed to the inner core tube 1 by pressing to provide a base for embedding a brush.
In this embodiment, polypropylene (PP) is preferably used as the material. The PP is a thermoplastic resin, has good moldability (roundness), and exhibits a required strength. As other materials, polyethylene (PE) and ABS resin are also used as the thermoplastic resin.
These PP, PE, and ABS have good moldability, high roundness as a cylindrical body, can ensure the fitting accuracy with the inner core tube 1 to a required accuracy, and brush installation holes to be described later The drilling workability is good.
Note that other synthetic resin materials are not excluded as long as the requirements (strength, moldability, etc.) of the outer tube 2 are satisfied.

The fitting fixing and adhesive fixing inner core tube 1 and outer tube 2 are fixed in the following manner.
In other words, the inner core tube 1 and the outer tube 2 are formed with a predetermined roundness, and the inner core tube 1 and the outer tube 2 are fitted together (Hameai). The outer diameter of the outer tube 2 and the inner diameter of the outer tube 2 maintain a predetermined “fitting” dimensional tolerance. Specifically, in this embodiment, an interference fit mode is adopted. That is, this is a fit when the minimum allowable dimension of the outer diameter of the inner core tube 1 is larger than the maximum allowable dimension of the inner diameter of the outer tube 2 (including the case where both are equal). Also excludes intermediate fits (fits where the maximum allowable dimension of the shaft is greater than the minimum allowable dimension of the hole (including cases where both are equal) and the minimum allowable dimension of the shaft is smaller than the maximum allowable dimension of the hole). It is not a thing. Therefore, the outer tube 2 is pushed into the inner core tube 1 with a predetermined force. However, the outer tube 2 allows a slight bulge in the outer diameter direction and allows this pushing. After the insertion, the outer tube 2 tightens the inner core tube 1, and both are firmly fixed.
Specifically, the fitting between the inner core tube 1 and the outer tube 2 corresponds to Js6 to P7 with respect to h6 as an axis reference (using a normal fit).
Further, the inner core tube 1 and the outer tube 2 are fixed through a predetermined adhesive filled in the concave groove 10 on the surface of the inner core tube 1, that is, an adhesive for plastic. The concave groove 10 occupies a predetermined proportion of the surface of the inner core tube 1 and exhibits a large adhesive force.

Polishing unit 4 (see FIGS. 1 to 3 and FIGS. 7 to 10)
The polishing unit 4 is composed of a plurality of brush rows 3 implanted in the outer tube 2, in other words, a set of brush rows 3.
More specifically, the brush row 3 is constituted by a series of brush bundles 16 planted in the brush planting holes 15. Each brush row 3 arranges the surface of the outer tube 2 in the axial direction at a predetermined interval.

(Brush planting hole 15) (see FIG. 3)
The brush planting holes 15 have a circular cross-sectional shape and are drilled in the outer tube 2 over a certain depth, and a large number of the brush planting holes 15 are drilled at regular intervals.
Furthermore, in this embodiment, the brush planting holes 15 are arranged in a staggered manner in each brush row 3.
FIG. 3 shows a cross-sectional configuration of the brush planting hole 15, 15 a being a hole wall thereof, and 15 b being a hole bottom having an inverted conical shape. The hole bottom 15b is kept at a constant distance from the inner core tube 1 below it. The brush planting hole 15 is drilled with a drill whose tip is formed in a conical shape. Accordingly, the hole bottom 15b has a conical shape corresponding to the shape of the tip. The brush planting hole 15 has, for example, specifications with a diameter of 5 mm, a depth of 10 mm, and an angle of the hole bottom 15b of 90 °.

(Brush bundle 16) (see FIG. 7)
The brush bundle 16 is implanted in each brush planting hole 15. As shown in FIG. 7, the brush bundle 16 is a bundle of 6 to 10 brush fibers 18 having a predetermined length and is bent from the center, and a stopper 19 made of a wire is wound around the bent portion. It is done.
More specifically, the brush fiber 18 is a fiber body having a predetermined diameter, and is itself abrasive. The brush fiber 18 has a repulsive nature and maintains a straight line shape in a natural state. The brush fiber 18 receives a restraining force at the center and faces in the same direction. When the restraining force is released, the brush fiber 18 returns to a straight line shape. As an example of the configuration, abrasive grains are attached to the surface of a synthetic resin wire through an adhesive. The stopper 19 is made of a metal wire, usually a steel wire, and a predetermined length is wound around the center, that is, the base of the bundled brush fibers 18 and both ends thereof are extended downward. For example, the brush fiber 18 has a length of 100 mm and a diameter of 1.0 mm, and the fastener 19 has a length of 22 mm and a diameter of 0.5 mm. As shown in FIG. 3, the individual brush bundle 16 is fixed when the stopper 19 bites into the outer tube 2 at the base, and the upper part of the brush bundle 16 rises from the surface of the outer tube 2 with elasticity.

(Brush row 3) (see FIGS. 8 to 10)
In this embodiment, the brush row | line | column 3 makes | forms linear form along an axial direction, as shown in FIG. The arrangement of the brush planting holes 15 is staggered, but as shown in FIGS. 8 and 9A, they are arranged close to each other with the center line C as the axis of symmetry. Further, as shown in FIG. 9 (b), a mode of being arranged in contact with the center line C or as close as possible is also adopted.
It should be noted that a minimum distance (2 mm as a guide) between the brush planting holes 15 should be ensured.
FIG. 10 shows a mode in which the brush rows 3 are arranged in a spiral shape. In this embodiment, the angle α is taken with respect to the axial line Z.

Auxiliary fixing part 5 (see FIGS. 11 and 12)
As shown in FIG. 11, the auxiliary fixing portion 5 is mainly formed by a small screw 20 and is screwed into a screw hole 21 formed across the boundary between the end portions of the inner core tube 1 and the outer tube 2. In the present embodiment, the auxiliary fixing portions 5 are arranged at two locations at each end, but the number is not limited.
FIG. 12 shows another aspect of the auxiliary fixing portion 5.
In this embodiment, a screw hole 22 that penetrates both the pipes 1 and 2 in the radial direction is formed at the end portions of the outer tube 2 and the inner core tube 1, and the longitudinal bolt 23 is screwed into the screw hole 22. Is. The number is not limited.
By the auxiliary fixing part 5, the inner core tube 1 and the outer tube 2 are more securely fixed.

Production of the polishing roll R The main polishing roll R is produced in the following manner.
(1) Molding process of inner core tube 1 and outer tube 2 When the inner core tube 1 is made of synthetic resin, the outer tube 2 is formed into a cylindrical shape by injection or extrusion molding of a synthetic resin material. The inner core tube 1 is preferably a bakelite tube. Alternatively, when the inner core tube 1 is a metal, a ready-made tube can be used. Since the outer tube 2 is made of PP, PE, or ABS resin, the moldability is good and the molding accuracy is high, and the predetermined fitting accuracy with the inner core tube 1 is maintained. The inner core tube 1 is also formed with a concave groove 10 on its surface (a lathe process for a spiral concave groove and a milling process for a grid-shaped concave groove).
(2) Application of adhesive to the groove 10 of the inner core tube 1 The groove 10 of the inner core tube 1 is filled with an adhesive.
(3) Press-fitting the inner core tube 1 into the outer tube 2 The outer tube 2 is sheathed on the inner core tube 1 and is fitted by being pushed in. That is, the inner core tube 1 is fixed, the outer tube 2 is sheathed on the inner tube 1, and the inner tube 1 is pushed in with a mechanical force such as a hydraulic cylinder. At this time, since the outer tube 2 has some elasticity, the outer tube 2 is externally fitted into the inner core tube 1 with elastic deformation.
(4) Processing of screw holes and screwing of screws Wait for the adhesive to consolidate, and then screw the screw holes 21 across the pipes 1 and 2 from the end faces of the inner core tube 1 and the outer tube 2. Then, the machine screw 20 is screwed into the screw hole 21.
(5) Drilling process Attaching to the semi-finished product, the brush planting holes 15 are drilled in the outer tube 2 in a linear or spiral line shape with a predetermined accuracy. In the present embodiment, as described above, each row is perforated in a staggered manner, and the holes 15 are brought as close as possible to each other. A numerically controlled (NC) drilling machine is used for this drilling operation and is done quickly.
(6) Flocking process The brush bundle 16 is planted in the outer tube 2 in which the brush planting hole 15 is drilled. An NC flocking machine is used for this planting operation, which is done quickly.

The polishing roll R on the polishing operation and the equipment is subjected to a handling operation as follows and performs a polishing action on the workpiece (work object).
The polishing roll R is used by being mounted on a rotation shaft e of a ready-made rotation drive device. That is, as shown in FIG. 13, wheel flanges c are attached to both ends, and a wheel flange d is also attached to the middle, and this polishing roll is driven via the wheel flanges c by driving of a rotary driving device interlocking with the wheel flanges c. R is rotationally driven.
By rotating the peripheral surface of the polishing roll R, the brush row 3 of the polishing unit 4 polishes the surface of the work separately, and exhibits an effective polishing action by the edge action of the contact end part. The water when the polishing scraps and cleaning water are used is smoothly discharged without staying in the brush.

(Operation of this embodiment)
In this polishing roll R, the inner core tube 1 and the outer tube 2 are indented with a predetermined fitting accuracy, and due to the difference in hardness between the inner core tube 1 and the outer tube 2, the inner core tube 1 and the outer tube 2 are further pressed. The outer tube 2 is more easily deformed than the inner core tube 1, so that the outer tube 2 is deformed in the outer diameter direction based on the elasticity of the outer tube 2, and is firmly fixed by tightening to the inner core tube 1. Get. Further, the adhesive is effectively held in the concave groove 10 on the outer surface of the inner core tube 1 to maintain a predetermined area ratio, and a further fixing force can be obtained by the adhesive action.
Further, when the fitting diameter is equal, the fitting force between the inner core tube 1 and the outer tube 2 becomes weak, but since there is an adhesive action, a sufficient fixing force can be obtained.
Further, since the auxiliary fixing portion 5 is screwed into the tightly fitted and fixed pipes and the screws are screwed together, the screw holes are not displaced and the screw fixing action is effectively applied. .
In the polishing operation, the rotation of the peripheral surface of the polishing roll R causes the brush row 3 of the polishing unit 4 to polish the surface of the work separately, and exhibits an effective polishing operation by the edge operation of the contact end portion. The water used when polishing scraps and cleaning water are used is smoothly discharged without staying in the brush.

(Effect of this embodiment)
According to the rotary polishing roll R of the present embodiment, the inner core tube 1 and the outer tube 2 have a predetermined hardness and the inner core tube 1 and the outer tube 2 maintain a predetermined fitting accuracy in the production. Therefore, the pushing force is clarified and pushed with a predetermined force. In other words, an excessive force is not required, the introduction of mechanical force is facilitated, and production is performed quickly and reliably.
Further, the adhesive filled in the concave groove 10 of the inner core tube 1 is not affected by the pressing operation of the inner core tube 1 and the outer tube 2, and the fixing action is performed at the same time, thereby improving the production efficiency. Figured.
Further, according to the present polishing roll R, as described above, the inner core tube 1 and the outer tube 2 can be firmly fixed (integrated), so that separation of both tubes during handling and transportation is drastically reduced. Is done. Furthermore, the inner core tube 1 and the outer tube 2 are not rattled, the durability of the polishing roll R is improved, and the life of the product itself is prolonged.
Further, the fixing force can be further increased by the auxiliary fixing portion 5.
Further, the polishing section 4 of the polishing roll R is composed of a brush row 3, and each brush row 3 polishes the surface of the work and exhibits an effective polishing action by the edge action of the contact end portion. According to the spiral arrangement, the edge effect is reduced as compared with the linear arrangement.

(Another aspect 1)
In the above embodiment (corresponding to FIGS. 1 to 12), the brush mode has been described. However, the present invention can be applied to a rotary buff in which an abrasive nonwoven fabric so-called buff is fixed to the outer peripheral surface of the outer tube 2.
In this embodiment, there is no change in the fixing action between the inner core tube 1 and the outer tube 2. In this embodiment, reducing the thickness of the outer tube 2 is a design matter.

(Another aspect 2)
Furthermore, although the inner core tube 1 is a bakelite tube in the previous embodiment, it may be replaced with an aluminum tube.
The brush of this aspect is attached to the shaft via an aluminum tube (base). The aluminum pedestal is die-cast and has good forming accuracy, and the concave grooves on the surface of the aluminum pedestal are also formed simultaneously or cut later.
The polishing part by the brush is not different from the polishing part 4 of the previous embodiment.

The present invention is not limited to the above embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included in the technical scope of the present invention.
1) In the above embodiment, the brush is a drive-in type brush bundle, but the present invention is not limited to this, and an appropriate type such as an implantable type by bonding is adopted. In addition, the material of the brush is not excluded.

The longitudinal cross-sectional view (1-1 longitudinal cross-sectional view of FIG. 2) which shows the whole structure of one Embodiment (cylindrical polishing brush) of the rotary type polishing roll of this invention. FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. FIG. 2 is a partial detailed cross-sectional view of FIG. The surface expansion | deployment figure of an inner core pipe. FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. Another surface development view of the inner core tube. The figure which shows the structure of a brush bundle. The expanded view of the brush row | line | column on the surface of an outer tube | pipe. Figure (a) shows the arrangement of brush holes. Figure (b) is an arrangement of another brush planting hole. The expanded view which shows the other aspect of a brush row | line | column. Detailed sectional drawing of an auxiliary fixing part (11 partial enlarged view of FIG. 1). The figure which shows the structure of the other aspect of an auxiliary | assistant fixing | fixed part. The block diagram which shows operation of the rotary type polishing roll of this invention.

Explanation of symbols

R: Rotary polishing roll, 1 ... Inner core tube, 2 ... Outer tube, 3 ... Brush row, 4 ... Polishing part, 5 ... Auxiliary fixing part, 10 ... Groove, 15 ... Brush planting hole, 16 ... Brush bundle, 20 ... Machine screw

Claims (8)

It consists of an inner core tube that forms a rigid cylindrical body that is attached to the rotating shaft directly or via a wheel flange, and an outer tube that forms a cylindrical body made of synthetic resin that is fitted and fixed to the inner core tube. In a polishing roll in which a polishing portion that performs a polishing action on a workpiece is arranged and polished by receiving a circumferential rotation drive from the rotating shaft,
The inner core tube and the outer tube are pressed and fitted with an outer diameter of the inner core tube and an inner diameter of the outer tube maintaining a fit tolerance due to an interference fit,
Concave grooves that maintain a constant width are formed substantially uniformly on the outer surface of the inner core tube,
An adhesive is filled between the inner core tube and the outer tube,
A rotary polishing roll characterized by that.   The rotary polishing roll according to claim 1, wherein the inner core tube and the outer tube are fixed by auxiliary fixing portions at their tube ends.   The rotary polishing roll according to claim 1 or 2, wherein the inner core tube is made of a phenol resin, and the outer tube is selected from any one of polypropylene, polyethylene, and ABS resin.   The rotary polishing roll according to any one of claims 1 to 3, wherein the polishing unit is a brush.   The rotary polishing roll according to claim 4, wherein the brush comprises a brush row formed by a bunch of brush bundles planted in a brush planting hole formed in the outer tube.   The rotary polishing roll according to claim 5, wherein the brush rows are spaced and arranged in a straight line or a spiral.   The rotary polishing roll according to any one of claims 1 to 3, wherein the polishing portion is a non-woven polishing material. In claim 3, the inner core tube is replaced with any one metal material of aluminum, ordinary steel, and stainless steel.
A rotary polishing roll characterized by that.

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