JP2002283139A - Deburring tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively remove a burr generated in the periphery of the machine work surface of a workpiece. SOLUTION: This deburring tool 20 is constituted of a handle part 21 clamped by a hand of a man or a manipulator and a blade part 23 extended from the tip end of this handle part to be formed with a wavy blade continued in a longitudinal section, and the blade top/bottom part of the wavy blade is formed of a partially circular contour line.

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 generated on a workpiece (hereinafter referred to as "work").

[0002]

2. Description of the Related Art Burrs often occur on workpieces. For example,
When a workpiece is manufactured using a molding die, such as a casting or an injection molded product, the molding material protrudes and solidifies on a mating surface between the dies, and forms burrs. Further, when the work is cut with a cutting tool or the like, an uncut portion or the like remains on the outer peripheral portion of the cut surface without being separated, and forms burrs. All of these are unnecessary and are removed because they cause problems in later processing and assembly. The outline of the conventional deburring is as follows. The procedure shown in FIG. 11 is to remove small burrs 3 and large burrs 5 generated on the processing surface of the work 1 by using a straight end mill type tool 7. Edge chamfering is also performed. The procedure shown in FIGS. 12 and 13 uses a rotary file type tool 9 or a drill type chamfering tool 11 instead of the straight end mill type tool 7 in FIG.
The deburring procedure is the same. The procedure shown in FIG. 14 is to push and pull the file tool 13 while pressing the file surface of the file tool 13 against the large burr 5 or the small burr 3, and the deburring and chamfering are performed simultaneously. File tool 1
3 has a shape as shown in FIG. 15 and FIG.
Generally speaking, it comprises a handle 13 a and a blade 13.
As shown in FIG. 16 (b), a cutting edge 13c facing the tip direction is continuously formed on the blade portion 13b.

[0003]

When the above-described deburring operation is automatically performed, the following problems occur. In order to automatically perform deburring, it is necessary to move at least a deburring tool along the burr generating portion. When this is performed by a numerical controller, the movement locus is constant. If burrs are formed at the intersection of the machined surface with another machined surface,
No particular problem arises because the burr generation site or locus is uniquely determined. However, when the burrs are adjacent to the material surface of the molded product, for example, the as-cast surface of the casting, the intersection of the casting dimensions is large. Therefore, the numerically controlled automatic deburring apparatus cannot be used in the above-mentioned case. Further, an automatic deburring (chamfering) device using a spring or air pressure has been proposed as a solution to such a disadvantage. Such a device is effective when the work is made of a material having low viscosity, such as aluminum or steel, when burrs are immediately scattered by rotational force or the like,
If the material of the workpiece is sticky, such as heat-resistant steel, large burrs will not be easily scattered, and the latter automatic deburring device will not provide the desired effect. Accordingly, an object of the present invention is to provide a deburring tool of an automatic deburring device capable of automatically performing a deburring operation even when the positions of burrs generated on a workpiece vary more than the machining accuracy.

[0004]

According to the present invention, there is provided a deburring tool comprising: a handle portion to be grasped by a hand or a manipulator; And a blade portion having a continuous corrugated blade formed on the surface, and the blade top and the blade bottom of the corrugated blade form a partially circular contour line. The overall shape of the blade is preferably a flat bar, a round bar, or a tapered conical bar.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same parts are denoted by the same reference numerals throughout the drawings. First, referring to FIGS. 1 to 3, a deburring tool 20 according to the present invention has a rod-like shape having a rectangular cross section, and includes a handle 21 and a blade 23. The handle 21 may have an appropriate shape that is easy to grasp or easy to attach to the manipulator. The blade 13 is
As shown in an enlarged manner in FIG. 3, a waveform having a blade height T is formed.
The crests and bottoms are circular with a radius of r. Furthermore,
The angle formed by the inclined surface of the blade is θ. Note that the blade height T is appropriately set in consideration of the assumed size of the burr.

A procedure for removing burrs around the cutting surface of the work 1 using the above-described deburring tool 20 will be described with reference to FIG. 4 and a partially enlarged view of FIG. First, as shown in (a), the blade portion 23 of the deburring tool 20 is brought closer to a burred edge of the work 1. In this state, burrs are inserted into the corrugated blade 25 while being lifted up as shown in (b), and burrs are generated while lifting up the deburring tool 20 as shown in (c). Then, it is further pulled up as shown in FIG. Some burrs are not broken by one wave of the wavy blade 25, but since the wavy blade 25 is continuous, burrs are repeatedly generated and eventually break. Burr fracture occurs at the boundary with the base material and pops out. In the above-described series of movements of the deburring tool 20, the corrugated blade 25 hits the edge of the work 1. However, since the cutting edge of the corrugated blade 25 is a circle having a radius r, the work 1 is damaged. do not do. In this way, the burrs are removed.

FIG. 6 shows a state in which the above-mentioned deburring tool 20 is attached to a wrist of a manipulator such as an articulated robot and the actual work is deburred. In FIG. 6, a large work 31 is fixed to a jig 33. Burrs are generated around the machined surface of the work 31, and are removed by the deburring tool 20 attached to the wrist of the articulated robot 35 in the manner described above. Deburring tool 20
The movement trajectory is performed by inputting the movement trajectory in advance by a numerical control method or by storing the trajectory by a teaching method. Such operation control of the articulated robot 35 is well-known, and thus detailed description is omitted.

Although the flat type deburring tool 20 is used in the above-mentioned embodiment, a round type or a conical type can be used as described later. 7 and 8, the deburring tool 40 is composed of a round bar-shaped handle portion 41 and a blade portion 43 having a circular cross section in which corrugated blades are continuously formed. FIG.
3 shows the shape of the blade of the blade portion 43 in an enlarged manner. The vertical cross-sectional shape of the corrugated blade 45 is the same as that of FIG. 3, but the shape is generally similar to an abacus ball with a rounded top end. Has become. or,
9 and 10 show a conical deburring tool 50. The deburring tool 50 includes a round bar-shaped handle portion 51 whose diameter does not change over the entire length, and a conical blade portion 53 as a whole. The blade portion 53 is tapered so that 2α forms a cone having an apex angle. When such deburring tools 40 and 50 are used for automatic deburring by a manipulator, there is an effect that the direction can be easily controlled.

[0009]

As described above, the blade portion of the deburring tool according to the present invention is constituted by a continuous corrugated blade in a longitudinal section or an axial section, and the top and bottom of the blade are partially circular. Since it is not a cutting edge, the burr is broken off at the base and removed. Therefore, the blade portion of the deburring tool,
Even if there is a variation in the distance from the burr-generating edge portion, the cutting and separating can be appropriately performed, so that the automatic operation of deburring can be easily performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a deburring tool according to the present invention.

FIG. 2 is a side view corresponding to FIG.

FIG. 3 is a schematic enlarged partial view showing a part III of FIG. 2 in an enlarged manner.

FIG. 4 is a process explanatory view of a deburring operation using the deburring tool of FIG. 1;

FIG. 5 is a process explanatory view showing a main part in an enlarged manner corresponding to FIG. 4;

FIG. 6 is a conceptual diagram showing a state in which a deburring operation is automatically performed using the deburring tool of FIG. 1;

FIG. 7 is a side view (a) and a front view (b) showing another embodiment of the present invention.

FIG. 8 is an enlarged conceptual diagram showing an enlarged part VIII of FIG. 7;

FIG. 9 is a side view showing still another embodiment of the present invention.
And a front view (b).

FIG. 10 is an enlarged conceptual diagram showing an enlarged portion X in FIG. 9;

FIG. 11 is a conceptual diagram showing an example of a conventional deburring operation state.

FIG. 12 is a conceptual diagram showing an example of a conventional deburring operation state.

FIG. 13 is a conceptual diagram showing an example of a conventional deburring operation state.

FIG. 14 is a conceptual diagram showing an example of a conventional deburring operation state.

FIG. 15 is a plan view showing an example of a conventional deburring tool.

FIG. 16 is a side view showing an example of a conventional deburring tool.

[Explanation of symbols]

 Reference Signs List 1 work 3 small burr 5 large burr 20 deburring tool 21 handle 23 blade 25 corrugated blade

Claims (3)

[Claims] 1. A blade of a corrugated blade, comprising: a handle portion grasped by a hand or a manipulator hand; A deburring tool in which the top and the bottom have a partially circular contour. 2. The deburring tool according to claim 1, wherein the blade portion is formed in a flat bar shape as a whole. 3. The deburring tool according to claim 1, wherein the blade portion is formed in a round bar shape or a tapered conical bar shape as a whole.