JPH11104912A - Guide member for burring machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and neatly burr an inner side reentrant angle of a fused part, by providing a guiding cylinder unit of truncated cone shape or truncated pyramid shape formed in a top part with an opening exposing an edge part of a bit, in a base cylinder unit externally fit mounted in a tip end part of a burring machine insert mounting the bit. SOLUTION: In an inner side reentrant angle of a fused part fusing both plastic plates P, P at a right angle, a tapered surface of a guiding cylinder unit 3 is brought into contact with a plate surface of both the plastic plates P, P. In this way, an edge part 101a of a bit 101 exposed from an opening 3a in a top part of the guiding cylinder unit 3 is positioned tightly in the inner side reentrant angle of the fused part. Accordingly, even when the bit 101 is rotated, easily position deviating to the right/left is eliminated. Consequently, even by a non-professional person, while rotating the bit 101, to be straight moved along the inner side reentrant angle, a burr therein can efficiently, neatly be removed at high efficiency by the edge part 101a of the bit 101.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide member used by being attached to a deburring machine.

[0002]

2. Description of the Related Art As is well known, when a container or the like is manufactured by welding a plastic plate, burrs are formed at an outer corner or an inner corner of a welded portion. is there. However, burrs generated at the outer corner of the welded portion can be easily removed, but burrs generated at the inner corner of the weld cannot be easily removed neatly.

Therefore, conventionally, a deburring machine 100 having a built-in motor as shown in FIG. 6 is used, and a bit 101 for a square face inserted into the tip of the deburring machine 100 is rotated to form a welded portion between both plastic plates. The burrs generated at the inner corners were neatly scraped off by the blade portion 101a at the tip of the bit.

[0004]

However, in the conventional deburring machine 100, there is no means for positioning the blade 101a at the tip of the bit 101 at the inner corner of the welded portion of both plastic plates. The portion 101a is easily displaced from the inner corner, and especially the position of the blade portion 101a is easily shifted when the bit 101 is rotating at high speed. There was a problem that considerable skill was required.

The present invention has been made in view of such a problem, and an object of the present invention is to position a blade at the tip of a bit at an inner corner of a welded portion so that even an amateur can efficiently remove burrs. An object of the present invention is to provide a guide member of a deburring machine that can be removed neatly.

[0006]

In order to achieve the above object, a guide member of a deburring machine according to claim 1 of the present invention comprises:
A truncated cone-shaped or truncated pyramid-shaped guide cylinder having an opening at the top for exposing the bit blade portion is formed on a base cylinder body externally fitted to the tip of the deburring machine having the bit inserted therein. It is characterized by being provided.

The guide member according to a second aspect of the present invention is the guide member according to the first aspect, wherein the guide cylinder has a shape in which the top of a cone or a pyramid having a 90 ° apex angle is cut off. According to a third aspect of the present invention, in the guide member according to the first or second aspect, a slit portion is formed in the base cylinder body, and the base cylinder body is formed by a tightening screw screwed into the slit portion. Is reduced in diameter so that it can be tightened freely.

The guide member according to the first aspect of the present invention is mounted by externally fitting the base cylinder body to the tip of the deburring machine. In this mounted state, the bit of the bit extends from the opening at the top of the guide cylinder body. It is exposed. Then, when removing burrs generated in the inside corners of the welded portions of both plastic plates, rotate the bit and cut the tapered surface or the inclined surface of the truncated cone or truncated pyramid-shaped guide cylinder. Contact both sides of the plastic plate at the inside corner. With this contact, the bit blade exposed from the opening at the top of the guide cylinder is positioned at the inner corner of the welded portion, and the bit is not easily displaced by the rotation of the bit. The burrs at the corners can be efficiently and neatly removed by the bit blades.

[0009] In particular, when the guide cylinder is a cylinder having a 90-degree apex and a truncated cone, the top of the cone is cut off at the right inner corner. It is extremely convenient to remove the generated burrs, and the guide member according to the third aspect, in which the base cylinder body can be freely tightened by the tightening screw, has the base cylinder body attached to the tip of the deburring machine. The guide member can be easily and firmly mounted and fixed by reducing the diameter of the base cylinder body with the tightening screw after the outer fitting and then tightening.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of one side section of a guide member according to an embodiment of the present invention, FIG. 2 is a plan view of the guide member, and FIGS. 3 and 4 show how the guide member is attached to a deburring machine. FIG. 5 is a front view and a plan view, and FIG. 5 is an explanatory diagram of a use state of the guide member.

As shown in FIGS. 1 and 2, the guide member 1 includes a base cylinder 2 and a guide cylinder 3.

The base cylinder 2 is externally fitted to the tip of the deburring machine 100 as shown in FIG. 3, and has a cylindrical shape having a longitudinal cut portion 2a as shown in FIG. The upper half portion of the cut portion 2a is connected by a thin connecting portion 2b having a substantially U-shaped cross section.

On both sides of the slit 2a, a projection 2c,
2d is formed, and a screw insertion hole 2e is formed in one protrusion 2c.
However, a screw hole 2f is formed in the opposite protrusion 2d. Then, the tightening screw 4 inserted from the screw insertion hole 2e is screwed into the screw hole 2f on the opposite side, whereby the tightening screw 4 is screwed to the notch 2a. When turned, the thin connecting portion 2b is compressed, and the base cylinder 2 is reduced in diameter and tightened.

On the other hand, as shown in FIG. 1, the guide cylinder 3 is formed as a truncated cone-shaped cylinder obtained by cutting off the top of a cone having an apex angle θ of 90 °. A circular opening 3a is formed. This opening 3a is shown in FIGS.
This is an opening for exposing the blade portion 101a of the bit as shown in FIG.

As shown in FIG. 1, a short cylindrical portion 3b for joining is formed at the lower end of the guide cylindrical body 3. Then, the short cylindrical portion 3b is internally fitted to the upper end of the base cylindrical body 2 and fixed with the stopper 5, so that the base cylindrical body 2 and the guide cylindrical body 3 are joined and integrated.

The above-mentioned base cylinder 2 and guide cylinder 3 may be made of metal, but can be made lighter by molding with synthetic resin.
It is desirable because mass productivity is improved. As the synthetic resin of the material, acrylic resin, vinyl chloride resin, polyamide resin, polyacetal, and other engineering plastics are preferably used. In particular, the guide cylinder 3 is a synthetic resin having excellent surface lubricity such as polyacetal. It is desirable to mold. When the guide cylinder 3 is formed of a synthetic resin having excellent surface lubricity, the guide cylinder 3 moves smoothly on the plastic plate surface during the deburring operation as described later, and there is an advantage that the workability is further improved. .

In the above embodiment, the base cylinder 2 and the guide cylinder 3 are separately manufactured and joined and integrated. However, in some cases, the base cylinder 2 and the guide cylinder 3 are made of the same synthetic resin. May be integrally molded.

The guide member 1 having the above-described structure is similar to that shown in FIG.
As shown in FIG. 4 and FIG.
(The tip where the corner bit 101 is inserted)
, And the base cylinder 2 is reduced in diameter and tightened by turning the tightening screw 4, whereby the base cylinder 2 is attached and fixed to the tip of the deburring machine 100. In this state, the blade 101a of the corner bit is exposed from the opening 3a at the top of the guide cylinder 3, and the blade 101a and the tapered surface of the guide cylinder 3 are smoothly continuous without any step. doing.

Therefore, when the tapered surface of the guide cylinder 3 is brought into contact with the plate surfaces of the two plastic plates P, P at the inner corner of the welded portion where the two plastic plates P, P are welded at right angles, The bit blade portion 101a exposed from the opening 3a at the top of the guide cylinder 3 is positioned exactly at the inner corner of the welded portion, so that even if the bit 101 is rotated, the bit does not easily shift right and left. In addition, even an amateur can move the bit 101 straight along the inner corner while rotating, and the burr at the inner corner can be efficiently and neatly removed by the bit blade portion 101a.

In this case, if the guide cylinder 3 is formed of a synthetic resin having excellent surface lubricity such as polyacetal as described above, the guide cylinder 3 is further kept in contact with the plastic plates P, P. Since it can be moved smoothly, deburring workability is further improved.

In the guide member 1 of this embodiment, the guide cylinder 3 and the apex angle θ are adjusted so that the guide cylinder 3 is adapted to deburr the inner corner of the portion where the two plastic plates P are welded at right angles. It is formed as a truncated conical cylinder in which the top of a cone that is 90 ° is cut. For example, both plastic plates P,
If the angle at which P is welded is 135 °, it may be configured as a truncated cone-shaped cylinder in which the top of a cone whose apex angle θ is 135 ° is correspondingly cut off. The body 3 may be formed as a truncated cone-shaped cylindrical body obtained by cutting off the top of a cone having an apex angle θ corresponding to the angle of the two welded plastic plates P, P.

In the present invention, the guide cylinder 3
Need not necessarily be a truncated cone-shaped cylinder, and may be configured as a truncated pyramid-shaped cylinder. Thus, when the guide cylinder is a truncated pyramid-shaped cylinder, However, by contacting the inclined surface with the plastic plate surface at the inner corner of the welded portion, the frusto-conical guide cylinder 3 is formed.
It is needless to say that the object of the present invention can be achieved because the same operation and effect as in the case of are achieved.

The guide member of the present invention, which is externally fitted to the tip of the deburring machine having the bit inserted therein, is provided with an outer corner of the welded portion other than the inner corner of the welded portion of the plastic plate or the like. However, this does not preclude the use of burrs for welding parts such as butting plastic plates.

[0025]

As is apparent from the above description, the guide member of the deburring machine according to the present invention is configured such that the bit of the bit inserted at the tip of the deburring machine is attached to the inside of the welded portion such as a plastic plate. Since the positioning can be easily performed at the corner and the bit is hardly displaced even when the bit rotates, there is a remarkable effect that a burr generated at the inside corner can be efficiently and neatly removed even by an amateur.

[Brief description of the drawings]

FIG. 1 is a one-side sectional front view of a guide member according to an embodiment of the present invention.

FIG. 2 is a plan view of the guide member.

FIG. 3 is a front view showing a state where the guide member is attached to a deburring machine.

FIG. 4 is a plan view showing a state where the guide member is attached to a deburring machine.

FIG. 5 is an explanatory diagram of a use state of the guide member.

FIG. 6 is a front view of a conventional deburring machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide member 2 Base cylinder 2a Cut part 3 Guide cylinder 3a Opening θ Vertical angle 4 Tightening screw 100 Deburring machine 101 Bit 101a Blade part

Claims (3)

[Claims] 1. A truncated cone or truncated pyramid having an opening for exposing a blade portion of a bit formed in a base cylinder body externally fitted to a tip portion of a deburring machine having a bit inserted therein. A guide member for a deburring machine provided with a guide cylinder. 2. A guide cylinder having a shape obtained by cutting off the top of a cone or pyramid having an apex angle of 90 °.
2. The guide member according to 1. 3. The base cylinder body according to claim 1, wherein a cut portion is formed in the base cylinder body, and the base cylinder body is reduced in diameter by a tightening screw screwed to the cut portion to be freely tightened. Guide member.