JP2775094B2 - Deburring tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for removing burrs and the like, and more particularly to a tool for removing burrs and burrs from a spool hole of a control valve of a transmission of an automobile or the like.

[0002]

2. Description of the Related Art As is well known, tools for removing burrs and burrs are used. As a removal tool of this type, the present applicant has proposed a removal tool disclosed in Japanese Patent Application No. 6-103234. Specifically, a flat brush portion formed by forming a plurality of brush bristles bundled in a binding portion into a disc shape, and a plurality of brush bristles sandwiched by a plurality of core wires, A twisted brush portion formed in a spiral shape by twisting the core wire in a bundled state, wherein the flat brush portion is located at a tip end portion of the tool body, and the twisted brush portion is the flat brush portion. This is a removal tool that is located with the binding portion between them.

[0003] Then, burrs and the like formed on the work are removed by using the above-mentioned removal tool. The work is, for example, a valve body of a control valve of an automobile transmission. Referring to FIG. 8 shown in the embodiment, a spool hole 12 is formed in the valve body 11. And a plurality of cross holes 13 orthogonal to the axis of the spool hole 12. Among the plurality of intersection holes 13, the first intersection hole 1
Reference numeral 3a is located at the closed end of the spool hole 12. A tip cross hole 15 is formed in the peripheral wall of the spool hole 12 located between the first and second cross holes 13a and 13b. The burrs 14 and the like are attached to the peripheral wall of the spool hole 12, the respective cross holes 13, and the tip cross hole 15.

Next, an operation of removing the burrs 14 of the valve body 11 by using the burrs 14 and the like will be described. First, while rotating the removal tool, the spool hole 12 is removed.
Insert into. Thus, the burrs 14 and the like are removed. The diameter of each of the brush bristles of the square brush portion and the twisting brush portion is larger than the diameter of the spool hole 12, and the brush bristles are bent while passing through the spool hole 12, and in this state, the bristles are bent. Spool hole 1
The burrs 14 and the like attached to the peripheral wall of No. 2 are removed. Further, when the brush bristles reach each of the cross holes 13 during the rotation insertion of the removal tool, the brush bristles are elastically restored to the original state.
As a result, the brush bristles are inserted into the respective cross holes 13, and the burrs 14 and the like attached to the respective cross holes 13 are removed. In the operation of removing the burrs 14, the burrs 14 and the like of the first cross holes 13a can be removed by the flat brush portion. Further, the burrs of the second intersection hole 13b and the plurality of intersection holes 13 thereafter can be removed by the torsion brush portion.

[0005]

According to the above prior art, the following problems occur. There was a binding part of a flat brush part between the square brush part and the twisting brush part of the removal tool. That is, the binding portion created a blank portion of the brush hair. For this reason, during the work for removing the burrs of the work, the burrs 14 on the peripheral wall of the spool hole located between the first intersection hole and the second intersection hole corresponding to the binding portion cannot be satisfactorily removed. . In other words, when the flat brush portion passes toward the first intersection hole, it is possible to remove a certain amount of burrs and the like of the peripheral wall between the first and second intersection holes.
When the flat brush portion reaches the first intersection hole, the binding portion is located on the peripheral wall between the first and second intersection holes, so that the deburring operation cannot be performed.

As a means for solving this, first, the elimination of the binding portion is considered. However, since the brush bristles are fixed to the core wire by providing the binding portion, the flat brush portion reduces the brush bristles coming off, thereby achieving good burrs removal. It is difficult to eliminate the ties. Second, reciprocating the removal tool during the deburring operation is considered. However, the operation of reciprocating the above-mentioned removal tool tends to complicate the removal operation, and the burr removal range covered by the brush bristles per unit number of the flat brush portion becomes large, so that the deburring operation tends to be long. Or good burrs cannot be removed.

As described above, in the conventional removing tool, the splicing portion is located between the corresponding first and second intersecting holes.
It was difficult to remove the burrs from the peripheral wall of the hole, and it was particularly difficult to remove the burrs located at the boundary between the spool hole and the first intersection hole. In addition, when the tip crossing hole is formed on the peripheral wall of the spool hole located between the first and second crossing holes, the burrs of the tip crossing hole remain.

Accordingly, an object of the present invention is to remove burrs in a tool for removing burrs or the like comprising the above-mentioned flat brush portion and twisting brush portion and having a binding portion formed between the flat brush portion and the twisting brush portion. It is an object of the present invention to provide a technique capable of satisfactorily removing burrs of a portion corresponding to the binding portion during work.

[0009]

In order to achieve the above object, the present invention has the following technical means. That is, this will be described using reference numerals in the accompanying drawings corresponding to the embodiments,
The present invention relates to a flat brush portion 4 in which a plurality of brush bristles 7 sandwiched between a plurality of core wires 5 and bound by a binding portion 3 are formed into a disk shape, and a plurality of brushes on the plurality of core wires 5. A torsion brush portion 2 which is formed in a helical shape by the hair 6 being sandwiched and twisted in a state where the core wire 5 is bundled,
The flat brush part 4 is located at the tip of the tool body 10,
In a tool for removing a burr or the like in which the torsion brush portion 2 is positioned with the binding portion 3 of the flat brush portion 4 interposed therebetween, the binding portion 3
This is a tool for removing burrs and the like, which has an abrasive 16 attached to the periphery.

The abrasive 16 is a porous pad made of abrasive fibers to which abrasive grains are adhered.

[0011]

The operation of removing the above-mentioned structure will be described. First, the removal tool is inserted into the spool hole of the work while rotating. At this time, when the flat brush portion 4 of the removing tool reaches the first intersection hole 13a, the flat brush portion 2 removes the burrs 14 and the like of the first intersection hole 13a. The torsion brush part 4 is provided in the second cross hole 13b.
Subsequent cross holes and burrs 14 of the spool holes 12 are removed. The abrasive material 11 attached to the binding portion 3 between the flat brush portion 2 and the twisting brush portion 4 has a spool hole 1 located between the first and second intersection holes 13a and 13b.
The burrs 2 and the burrs 14 of the crossing holes are removed.

[0012]

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The removal tool A includes a shaft portion 1 and a tool body 10 including a twisting brush portion 2 and a flat brush portion 4.

The shaft 1 is made of a metal rod. The twisting brush portion 2 sandwiches the nylon brush bristles 6 with four core wires 5 and bundles and twists the core wires 5 so that the brush bristles 6 are fixed to the core wires 5 and the brush bristles 6 are spirally formed. It is formed by lining up.

The flat brush portion 4 is formed by forming a plurality of brush bristles 7 bound by the binding portion 3 into a disk shape, and fixing the center portion of the disk with an adhesive 9 to maintain the shape. ing. The flat brush portion 2 is located at the tip end of the tool body 10, and the twisting brush portion 2 is located with the binding portion 3 of the flat brush portion 4 interposed therebetween.

The rear portions 5A of the four core wires 5 are
It is inserted and fixed to the shaft portion 1.

In the above, substantially the same parts as those of the related art have been described. Next, features of the present invention will be described. That is, the abrasive 16 is attached around the binding portion 3. The polishing material 16 is a porous polishing pad 16 made of polishing fibers to which abrasive grains are adhered. More specifically, the polishing pad 16 is formed by entanglement of polishing fibers to which the abrasive grains are adhered, and the diameter D4 of the polishing pad 16 is the diameter D4 of each of the twist brush portion 2 and the flat brush portion 4.
2. Same as D1.

An abrasive pad 16 as the abrasive 16
In this example, the product names manufactured by Sumitomo 3M Co., Ltd. are industrial pad high pad, industrial pad 7440, industrial pad 8449, industrial pad 7449 (the above is aluminum oxide abrasive), industrial pad 7446, Industrial pad 8
448, and industrial pad 7448 (the above is silicon carbide as abrasive grains) are used depending on the application.
In addition, as the polishing material 16, the polishing pad 1 described above is used.
In addition to 6, another abrasive 16 such as using brush bristles similar to the brush bristles 6 and 7 used in the twisting brush portion 2 and the flat brush portion 4 may be used.

Next, the manufacturing process of the removing tool A will be briefly described with reference to FIGS. First, the core wire 5
, Four core wires 5a, 5b, 5c, 5d are prepared,
While a plurality of brush bristles 6 for forming the torsion brush portion 2 are interposed, the bristles are implanted, and a plurality of brush bristles 7 for forming the flat brush portion 4 are interposed between the brushes (FIG. 3).
reference).

Next, the four core wires 5a, 5b, 5c,
5d is twisted using a jig to make the arrangement of the brush bristles 6 for forming the twisted brush part 2 spiral, and the arrangement of the brush bristles 7 of the flat brush part 4 is set to a half-twist state (see FIG. 4). ).

Next, the brush bristles 7 for forming the flat brush portion 2 are laid down and put together in a brush shape, and bound by a wire-8. That is, the bristles 7 are bound by the binding unit 3 (see FIG. 5).

Next, brush bristles 6 for forming the twisting brush portion 2
To form a torsion brush portion 2 having a diameter of D2 (see FIG. 6). Further, after the brush bristles 7 for forming the plurality of flat brush portions 4 bundled by the binding portion 3 are spread, the outer diameter portion of the brush bristles 7 is shaved into a disk shape having a diameter D1. The part bound by 8 is solidified with adhesive 9 to keep the shape,
The flat brush part 4 is formed. The diameter D2 of the twisting brush portion 2 and the diameter D1 of the flat brush portion 4 are larger than the diameter D3 of the spool hole 12 of the valve body 11 which is a work.

Next, the raw material 16A of the polishing pad 16 as the polishing material 16 is inserted from the shaft portion 1. At this time, the polishing pad 16 has a cross-shaped cut 16a.
Is attached. Further, in this example, the two raw materials 16A of the polishing pad 16 are inserted in an overlapping state. Next, an adhesive is applied to the peripheral surface of the binding portion 3. The adhesive is an adhesive that can withstand aqueous oil when the removal tool A is used.
Next, the raw material 16A of the polishing pad 16 is moved to the binding portion 3 and fixed. Next, the raw material 16A of the polishing pad 16 is cut in a circular shape so that the diameters D2 and D1 of the twisting brush portion 2 and the flat brush portion 4 are equal. That is, a polishing pad 16 having a diameter of D4 is formed (see FIGS. 1 and 2).

Next, an operation of removing the burrs 14 and the like using the above-described removal tool A will be described with reference to FIGS. First,
The shaft 1 is mounted on a rotary tool (not shown), and the rotary tool is driven. Thereby, the removal tool A rotates. Then, while removing the removal tool A, the removal tool A is inserted from the open end 12A of the spool hole 12 of the valve body 11.

The diameters D2 and D1 of the twisting brush portion 2 and the flat brush portion 4 and the diameter D4 of the polishing pad 16 are equal to the diameter D of the spool hole 12 of the valve body 11.
It is larger than 3. As a result, the bristles 6, 7 of the twisting brush portion 2 and the flat brush portion 4, and the outer peripheral portion of the polishing pad 16 are inserted into the spool hole 12 in a bent state, and the spool hole The burrs 14 and the like attached to the peripheral wall 12 are removed. When the third to seventh cross holes 13c, 13d, 13e, 13f, and 13g are reached, the brush bristles 6, 7 of the twist brush portion 2 and the flat brush portion 4 and the outer peripheral portion of the abrasive 16 are elastically restored. And
The burrs 14 of the cross holes 13c, 13d, 13e, 13f, and 13g are removed.

The flat brush portion 4 of the removal tool A
When the brush reaches the first intersecting hole 13a, the flat brush portion 4 is elastically restored to remove the burrs 14 and the like of the first intersecting hole 13a. Further, the torsion brush part 2 is provided with the second cross hole 13.
b, the burr 14 and the like of the second cross hole 13b are removed. The abrasive 11 attached to the binding portion 3 between the twisting brush portion 2 and the flat brush portion 4 is provided with a burr 14 on the peripheral wall of the spool hole 12 located between the first and second intersecting holes 13a and 13b. Etc. are removed. In particular, a burr 14A at the boundary between the spool hole 12 and the first intersection hole 13a.
Are also removed. In addition, the first and second intersection holes 13a,
The burrs 14 and the like of the tip intersection holes 15 formed in the spool holes 12 between 13b are also removed.

As described above, the provision of the abrasive 16 allows the first and second intersecting holes 13a and 13b to be provided.
The burrs 14 on the peripheral wall of the spool hole 12 can be removed.

[0027]

As described in detail above, according to the first and second aspects of the present invention, since the abrasive is attached around the binding portion, the position corresponding to the binding portion during the deburring operation is reduced. The burrs of the spool hole and the burrs of the cross-tip hole formed in the spool hole can be satisfactorily removed.

[Brief description of the drawings]

FIG. 1 is a side view of a tool for removing burrs and the like shown in an embodiment of the present invention.

FIG. 2 is a perspective view of a tool for removing burrs and the like shown in the embodiment of the present invention.

FIG. 3 is a first manufacturing process diagram of a tool for removing burrs and the like shown in the embodiment of the present invention.

FIG. 4 is a second manufacturing process diagram of the tool for removing burrs and the like shown in the embodiment of the present invention.

FIG. 5 is a third manufacturing process diagram of the tool for removing burrs and the like shown in the embodiment of the present invention.

FIG. 6 is a fourth manufacturing process diagram of the tool for removing burrs and the like shown in the embodiment of the present invention.

FIG. 7 is a fifth manufacturing process diagram of the tool for removing burrs and the like shown in the embodiment of the present invention.

FIG. 8 is a sectional view of a work to be removed by a tool for removing burrs or the like shown in the embodiment of the present invention.

FIG. 9 is a diagram illustrating a removal operation using a tool for removing burrs and the like shown in the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft part 2 Torsion brush part 3 Binding part 4 Flat brush part 5 Core wire 6 Brush hair of twist brush part 7 Brush bristles of flat brush part 8 Wire-9 Adhesive 10 Tool body 11 Valve body 12 Spool hole 13 Cross hole 14 Burrs 15 Crossing holes 16 Abrasive

Claims (2)

(57) [Claims] 1. A flat brush portion 4 formed by forming a plurality of brush bristles 7 sandwiched between a plurality of core wires 5 and bound by a binding portion 3 into a disk shape; The brush bristles 6 are sandwiched, and the core wire 5 is twisted in a bundled state and twisted to form a spiral shape. In a removal tool such as a burr where the torsion brush portion 2 is located with the binding portion 3 of the flat brush portion 4 interposed therebetween, an abrasive 16 is attached around the binding portion 3. Etc. removal tools. 2. The tool according to claim 1, wherein the abrasive 16 is a porous pad made of abrasive fibers to which abrasive grains are adhered.