JPH10217083A - Deburring tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To run a polishing wire along a product shape, and shave off only a burr appearing on its surface by arranging oppositely rotatable wheels so as to freely come close to and separate from each other by elastically energizing these in the mutually separating direction, and stretching and hanging the flexible polishing wire between both wheels. SOLUTION: While rotating a base shaft 10, a polishing wire 16 is pushed against a surface of a product 22 on which a burr appears. At this time, when the wire is strongly pushed against the surface, its pressing force contracts a spring 18, and moves the other wheel 14 aside to one wheel 12 side, and the polishing wire 16 is recessed in a hand drum shape. Therefore, the pressing force is adjusted according to a projecting shape or the like of the product 22. The polishing wire 16 pushed against the product 22 shaves off a burr appearing on its surface. In this case, since the polishing wire 16 runs along a surface shape of the product 22, only the burr is shaven off, and the other part is not damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring tool for removing burrs formed on a resin or metal molded product.

[0002]

2. Description of the Related Art Since a molded product made of resin or metal uses a mold, burrs are generated at joints thereof, and particularly in blow molding, large burrs are generated. If this molding is used where it can be seen, it must be deburred. FIG. 3 is an explanatory view showing the state, in which the burr b generated on the product a has been scraped off with a tool c such as a file or an electric file.

[0003]

However, since the surface of such a tool is flat or circular, even the flesh at the base of the burr is cut off, and the shape of the product is changed. In particular, in the case of a product having a convex shape, burrs are formed on the top of the convex shape during molding, so that the shaving amount is large and the product shape is significantly reduced. The present invention has been made to solve such a problem, and the shape of a deburring tool can be arbitrarily changed according to a product shape.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides two foils rotating opposite to each other, which are elastically biased in a direction away from each other so as to approach and separate from each other. The present invention provides a deburring tool in which a plurality of polishing wires are concentrically mounted from the center of the foil.

[0005] By taking the above measures, the present invention, that is, the flexibility of the polishing wire and the variable spacing of the foil holding it at both ends, the polishing wire is deformed to follow the product shape. Therefore, even if the location where the burr is present has a convex shape, only the burr is scraped off and the product shape is not damaged.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a deburring tool according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. 1. In this deburring tool, two foils 12, 14 are opposed to a base shaft 10. The polishing wire 16 is fitted between the two 12 and 14.
It is a thing which was put on.

In this case, the two foils 12 and 14 can move on the base shaft 10, and a spring 18 is interposed between the two wheels 12 and 14 to repel each other. In this example, one of the foils 12 (end side of the base shaft 10) is fixed to the base shaft 10 and only the other foil 14 is movable (however, the large diameter portion 1 is attached to the base shaft 10).
0a is provided so as not to be apart from a certain range or more), and both may be movable.

[0008] A polishing wire 16 is attached to each of the foils 12 and 14, and the polishing wire 16 needs to be turned together with the base shaft 10. Therefore, each foil 12, 14
Need to be attached to the base shaft 10 so that they cannot be rotated relative to each other. In this example, the fitting portions are not circular but deformed to enable this. Note that this is merely an example, and other keys and splines may be used.

The polishing wire 16 is required to have flexibility, and in many cases, a piano wire or the like is used. The piano wire alone has a sufficient deburring function, but the use of a surface coated with abrasive grains or the like further enhances the scraping effect. In particular, if diamond particles are applied, the scraping action is further increased, and deburring of aluminum or cast iron can be performed.

As described above, the polishing wire 16 is hung between the foils 12 and 14. Specifically, the polishing wire 16 is inserted into the foils 12 and 14, and the outside of the polishing wire 16 is caulked with a crimping tool 20 or the like. One that can be fixed by caulking is considered. There is no limitation on the manner in which the polishing wire 16 is attached, but it is preferable to attach a plurality of the polishing wires 16 in parallel with the base shaft 10 and concentrically from the center thereof.

The method of using the above deburring tool will be described. The polishing wire 16 is pressed against the surface of the product 22 from which the burr 22a is projected while rotating the base shaft 10. At this time, if you press strongly, the pressing force will be
8, the other foil 14 is brought closer to the one foil 12 side, and the polishing wire 16 is concaved like a drum (state above the center line in FIG. 1). Therefore, the pressing force is adjusted according to the convex shape or the like of the product 22.

The polishing wire 16 pressed against the product 22
Removes the burr 22a on the surface. Therefore,
The tool may be moved sequentially in the direction of the burr 20a.
At this time, since the polishing wire 16 follows the surface shape of the product 22, only the burr 22a is scraped off, and the other portions are not damaged.

The above deburring operation may be performed manually or automatically. In the former case, the base shaft 10 is attached to a power tool or the like, and the power tool is moved to perform deburring while visually checking the condition of the burr 20a. On the other hand, in the latter case, a work robot system in which the main shaft 10 is driven by the main shaft of the machine and the machine is automatically moved according to the product shape can be considered.

[0014]

As described above, since the present invention has been described above, the following effects can be expected. a) Since the polishing wire conforms to the product shape, only the burrs on the surface of the polishing wire are scraped off, and the other portions are not damaged. b) The abrasive wire separates from the product after the burr is removed,
It is cooled until it works. Therefore, the temperature does not rise and the product is not adversely affected. In this regard, resin products melt when exposed to hot tools, but there is no such concern.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a deburring tool according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory diagram showing a state of deburring.

[Explanation of symbols]

 12 foil 14 foil 16 abrasive wire

Claims (2)

[Claims] The present invention is characterized in that two foils rotating opposite to each other are elastically biased in a direction away from each other and are provided so as to approach and separate freely, and a flexible polishing wire is attached between the two foils. And deburring tool. 2. The deburring tool according to claim 1, wherein a plurality of polishing wires are attached concentrically from the center of the foil.