JP2001205569A - Deburring brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit the complication and difficulty of automatic deburring operation using a deburring brush 1 and inhibit the production of secondary burrs on the working end face of a work W against which a deburring treatment member 9 is pushed. SOLUTION: A rotating shaft 7 is integrally provided on the opposite side to the opening side of a mounting hole 3 in a mounting cup 5, a base portion of the deburring treatment member 9 with a number of brush hairs 11 solidified with an elastic body 13 is provided in the mounting hole 3 in the mounting cup 5, and a taper portion 15 is provided at the end of the deburring treatment member 9. The taper angle θ of the taper portion 15 to the axial center 7s of the rotating shaft 7 is greater than 45 degrees and smaller than 90 degrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring brush used for removing burrs generated on a processing end face of a work.

[0002]

2. Description of the Related Art When a work is punched by a punch press or sheared by a shearing machine, burrs are formed on the processing end face of the work. Conventionally, a taking brush is used.

That is, the deburring brush has a mounting cup having a mounting hole as a base, and a rotary shaft is integrally provided on the mounting cup on the side opposite to the opening side of the mounting hole. Further, a base of a deburring member is provided in the mounting hole of the mounting cup, and the deburring member is configured by solidifying a large number of brush bristles with an elastic body. A tapered portion is provided on the tip end side of the deburring member so that the taper angle of the tapered portion with respect to the axis of the rotating shaft is 45 degrees or less.

Accordingly, the work is horizontally supported on an appropriate table. Next, by rotating the rotation axis about the axis by driving the rotation actuator,
Rotate the entire deburring brush. Then, the tip of the deburring member is pressed against the burr generated on the processing end surface of the work, and the entire deburring brush is moved relatively to the work along the longitudinal direction of the processing end surface of the work.
Thereby, burrs can be removed by the tapered portion of the deburring member.

[0005]

When the entire burr-removing brush is rotated to remove burrs while keeping the rotating shaft in a vertical state, the taper angle of the tapered portion with respect to the axis of the rotating shaft is 45 degrees. Because of the following, the included angle between the tapered portion and the surface of the work becomes large. For this reason, the first burr (burr before secondary burr is generated) can be scraped off by the tapered portion of the deburring member, but depending on the deburring conditions such as the material of the work, the pressing of the deburring member causes the burr to be applied to the work. There is a problem that secondary burrs are generated in a direction corresponding to the included angle, and a sufficient deburring effect cannot be achieved by the deburring brush.

On the other hand, when the rotating shaft is inclined from the vertical state and the deburring brush is rotated to remove burrs, the included angle is reduced, and the deburring member is pressed to reduce the included angle. The generation of secondary burrs in the corresponding directions can be suppressed. However, there is a problem that the number of operations associated with the inclination of the rotation axis increases, and the automatic deburring operation using the deburring brush becomes complicated and difficult.

Accordingly, an object of the present invention is to provide a deburring brush which can solve the conventional problems as described above.

[0008]

According to the first aspect of the present invention, there is provided a deburring brush used for removing a burr generated on a processing end surface of a work, wherein a deburring brush having a mounting hole has a base. A rotary shaft is integrally provided on the mounting cup on the side opposite to the opening side of the mounting hole, and a base of a deburring member in which a number of brush bristles are fixed by an elastic body is provided in the mounting hole of the mounting cup. A tapered portion is provided on the tip side of the deburring member,
The taper angle of the tapered portion with respect to the axis of the rotation shaft is 4
It is characterized in that it is configured to be larger than 5 degrees and smaller than 90 degrees.

According to the first aspect of the present invention,
The work is supported horizontally on an appropriate table. next,
By rotating the rotating shaft driven by the rotary actuator about the axis while the rotating shaft is vertical, the entire deburring brush is rotated. And
The tapered portion of the deburring member is pressed against the burr generated on the processing end surface of the work, and the entire deburring brush is moved relatively to the work along the longitudinal direction of the processing end surface of the work. Thereby, burrs can be removed by the tapered portion of the deburring member.

Here, since the taper angle of the tapered portion with respect to the axis of the rotating shaft is set to be larger than 45 degrees and smaller than 90 degrees, when the deburring brush is rotated to remove the burrs, In addition, it is possible to reduce the included angle between the tapered portion of the deburring member and the surface of the workpiece while keeping the rotation axis vertical.

In the invention described in claim 2, in addition to the matters specified in the invention described in claim 1, the taper angle of the tapered portion with respect to the axis of the rotating shaft is not less than 50 degrees and not more than 85 degrees. There is a feature.

According to the second aspect of the present invention,
The same operation as the operation according to the first aspect of the present invention is achieved.

According to a third aspect of the present invention, in addition to the features of the first or second aspect of the present invention, a notch is provided at a tip end side of the deburring member. Features.

According to the third aspect of the present invention,
In addition to the action according to the first aspect of the present invention, burrs separated from the work enter the notch and are easily discharged from the notch to the outside of the deburring brush.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a deburring brush 1 according to an embodiment of the present invention is a brush used for removing a burr Wb generated on a processing end face of a work W, Hereinafter, the deburring brush 1 will be described in detail. Note that the processed end surface of the work W refers to a portion that has been punched by a punch press (not shown) or sheared by a shearing machine (not shown).

The deburring brush 1 is provided with a mounting cup 5 having a mounting hole 3 as a base. The mounting cup 5 is rotated on the side opposite to the opening side of the mounting hole 3 (the upper side in FIG. 1). The shaft 7 is provided integrally. Here, when viewed from the opening side of the mounting cup 5 (the lower side in FIG. 1), the center of the mounting hole 3 and the axis of the rotating shaft 7 are substantially aligned.

A base of a deburring processing member 9 is provided in the mounting hole 3 of the mounting cup 5, and the burr removing processing member 9 is formed by fixing a large number of brush bristles 11 with an elastic body 13 such as rubber or urethane. Is done. Further, a tapered portion 15 is provided on the tip side of the deburring member 9,
The taper angle θ of the tapered portion 15 with respect to the axis 7s of the rotary shaft 7 is larger than 45 degrees and smaller than 90 degrees (preferably 50 degrees or more and 85 degrees or less). Further, as shown in FIGS. 2A and 2B, a cross-shaped notch 17 is provided at the tip end of the deburring member 9 or as shown in FIGS. 3A and 3B. It is permissible to provide a notch 19 in the form of a semi-notch on the tip side of the tip 9.

Next, the operation of the embodiment of the present invention will be described.

The work W is supported horizontally on an appropriate table (not shown). Next, in a state where the rotating shaft 7 is vertical, the rotating shaft 7 is rotated about the shaft center 7 s by driving a rotation actuator (not shown), thereby rotating the entire deburring brush 1. Then, the deburring member 9 is replaced with the burr W generated on the processing end face of the work W.
b, the entire deburring brush 1 is moved relative to the workpiece W along the longitudinal direction of the processing end face of the workpiece W (the front and back direction in FIG. 1 toward the paper surface).
Thus, the burr Wb can be scraped off by the deburring member 9.

Since the taper angle θ of the tapered portion 15 with respect to the axis 7s of the rotating shaft 7 is larger than 45 degrees and smaller than 90 degrees, the deburring brush 1 is rotated. When the burr Wb is scraped off, the rotation angle 7 is kept vertical, and the included angle θ between the taper 15 of the deburring member 9 and the surface of the workpiece W can be reduced.

In the case where the notch 17 as shown in FIGS. 2A and 2B or the notch 19 as shown in FIGS. In addition to the operation, the burr Wb separated from the work W
(Or 19), and is easily discharged from the notch 17 (or 19) to the outside of the deburring brush 1.

As described above, according to the embodiment of the present invention, when rotating the deburring brush 1 to scrape the burr Wb, the deburring processing member is maintained while the rotating shaft 7 is kept vertical. Since the included angle θ between the tapered portion 15 and the surface of the work W can be reduced, the complexity and difficulty of the automatic deburring operation using the deburring brush 1 can be suppressed, and The generation of secondary burrs on the processing end surface of the work W due to the pressing of the deburring processing member 9 can be suppressed, and the deburring brush 1 can achieve a sufficient deburring effect.

Further, when the notch 17 as shown in FIGS. 2A and 2B or the notch 19 as shown in FIGS. Since the burrs Wb easily enter the notch 17 (or 19) and are easily discharged from the notch 17 (or 19) to the outside of the deburring brush 1, the separated burrs Wb adhere to the deburring processing member 9. Can be further suppressed, and the deburring effect of the deburring brush 1 can be further improved.

[Embodiment] An embodiment of the above-described embodiment of the present invention will be described with reference to FIG.

FIG. 4A shows a deburring brush 1 in which the taper angle θ of the tapered portion 15 with respect to the axis 7s of the rotating shaft 7 is set to 75 degrees. Shows a deburring brush 1 characterized in that the taper angle θ is 60 degrees. Also, in FIG.
As a reference example, there is shown a deburring brush 21 (prior art deburring brush) wherein the taper angle θ is 45 degrees. Then, under the same deburring conditions, when burrs (burr height 45 μm to 60 μm) generated on the processing end face of the work W are cut off, FIG.
When the deburring brush 1 shown in FIG. 4 is used, the height of the burr becomes 0 μm to 20 μm, and when the deburring brush 1 shown in FIG. The height becomes 0 μm to 15 μm, and when the brush 21 for deburring as a reference example shown in FIG. 4C is used, the height of the burr becomes 15 μm to 30 μm. In other words, as compared with the case where the burr is removed using the deburring brush 21 shown in FIG.
It is experimentally confirmed that when the burr is removed by using the burr-removing brush 1 shown in (b), the generation of the secondary burr on the processing end surface of the work W is suppressed.

Here, the same deburring conditions are as follows: (i)
The maximum length of the brush bristles 11 is 20 mm, (ii) the number of rotations of the rotating shaft 7 is 10,000 rpm, (iii)
(V) the moving speed of the deburring brush 1 along the longitudinal direction of the processing end face of the work W is 5 m / min, (v) ) The load for pressing the deburring member 9 against the work W is 600 g, and (vi) the material of the work W is SECC.

[0027]

According to the first aspect of the present invention, when the burr removing brush is rotated to remove the burr, the tapered portion of the deburring member and the work are maintained while keeping the rotating shaft vertical. Since the included angle between the surfaces of the deburring can be reduced, the complexity and difficulty of the automatic deburring operation using the deburring brush can be suppressed, and the work is performed by pressing the deburring member. The generation of secondary burrs on the processed end surface of the above can be suppressed, and a sufficient deburring effect can be achieved by the deburring brush.

According to the second aspect of the present invention, the same effect as that of the first aspect of the invention is obtained.

According to the third aspect of the present invention, since the burrs separated from the work easily enter the notch and are discharged from the notch to the outside of the deburring brush, the separated burrs are removed. Adhesion to the processing member can be suppressed, and the effect of the invention described in claim 1 can be further improved.

[Brief description of the drawings]

FIG. 1 is a front view of a deburring brush according to an embodiment of the present invention.

FIG. 2A is a front view of a deburring brush in which a cross-shaped notch is provided at a tip end side of the deburring brush;
FIG. 2B is a diagram of FIG. 2A viewed from below.

FIG. 3A is a front view of a deburring brush in which a semi-notched cutout is provided on the tip side of the deburring brush;
FIG. 3B is a diagram of FIG. 3A viewed from below.

FIG. 4A is a front view of the deburring brush according to the embodiment, wherein the taper angle of the tapered portion with respect to the axis of the rotating shaft is 75 degrees, and FIG. FIG. 4C is a front view of the deburring brush according to the embodiment, in which the taper angle of the tapered portion with respect to the axis of the rotating shaft is 60 degrees, and FIG. FIG. 4 is a front view of a deburring brush according to a reference example, wherein the taper angle of the brush is 45 degrees.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deburring brush 3 Mounting hole 5 Mounting cup 7 Rotating shaft 9 Deburring processing member 11 Brush bristles 13 Elastic body 15 Tapered part 17 Notch

Claims (3)

[Claims] 1. A deburring brush used for removing burrs generated on a processing end face of a work, comprising a mounting cup having a mounting hole as a base, the mounting cup being provided on a side opposite to an opening side of the mounting hole in the mounting cup. A rotating shaft is provided integrally, and in the mounting hole of the mounting cup,
A base portion of a deburring member in which a number of brush bristles are fixed by an elastic body is provided, and a tapered portion is provided on a tip side of the deburring member, and a taper angle of the tapered portion with respect to the axis of the rotation shaft is 45 degrees or more. A deburring brush which is configured to be larger and smaller than 90 degrees. 2. The deburring brush according to claim 1, wherein a taper angle of the tapered portion with respect to an axis of the rotating shaft is not less than 50 degrees and not more than 85 degrees. 3. A notch portion is provided at a front end side of the deburring member.
The brush for deburring described in 1.