JP3783744B2 - Elastic deburring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic deburring device, and more particularly, to an automatic deburring device capable of reliably removing a soft elastic burr formed on a molded product of a rubber-based material.
[0002]
[Prior art]
In the conventional deburring device, when the molded product is made of a rubber-based material, the burr formed therein is soft and thin. For example, even if the tip of the wire brush is brought into contact with the burr, the burr is not a wire. Escaped from the tip of the brush, leaving uncut material.
[0003]
In order to solve this problem, a deburring device such as that described in Japanese Patent Application Laid-Open No. 7-1473 has been proposed. FIG. 3 shows a deburring device for rubber-based material burrs described in JP-A-7-1473. The deburring device is a robot body 31 controlled by a control device 38, is pivotally supported by the robot body 31, and is telescopically supported by a telescopic robot arm 32. And a file 34 that is detachably attached to the tip of the tool holder 33 and can be reciprocated. In addition, a molded product support base 36 is disposed in the vicinity of the robot body 31, and an automobile handle 35, which is an elastomer molded product, is placed and supported on the molded product support base 36. The handle 35 is formed with a thin burr 35A on its outer periphery.
[0004]
In order to remove this thin burr 35A, first, the robot arm 32 is extended, the file 34 is brought close to the handle 35, and then the axis of the file 34 is parallel to the axis direction of the handle 35. The angle and the holding angle of the tool holder 33 are adjusted, and the file 34 is reciprocated in the axial direction. Next, the file 34 is brought into contact with the burr 35 </ b> A, and the tool holder 33 is turned around the handle 35 in one direction by turning the robot arm 32 while making contact. Then, since the file 34 reciprocates along the axial direction of the file 34, many eyes of the file 34 are easily caught by the burr 35 </ b> A. Since the tensile load is received in the vertical direction at the boundary portion, the burr 35A is broken at the boundary portion with the main body portion of the handle 35. Thus, this known deburring device hooks the soft burr with a file without making excessive pressing contact with the burr, and the soft burr goes away from the molded product or goes straight to the protruding direction of the burr. The file is deburred by reciprocating the file many times in the direction.
[0005]
[Problems to be solved by the invention]
However, even in the automatic deburring apparatus as described above, when the burr is very soft and thin, the burr often follows the reciprocating movement of the file and often does not get caught on the file surface.
Even if the burr is caught on the file surface, in most cases the burr shape is thicker at the root (that is, the boundary between the molded product and the burr) than the tip of the burr. There is a problem that it is not possible to deburr from the base part with high accuracy because only pulling will cause it to be pulled out from the middle of the burr.
Accordingly, an object of the present invention is to eliminate the escape from the tool even with a very soft and thin burr formed on a molded product of a rubber-based material so that the burr can be accurately taken.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, according to the present invention, the suction port of the suction device is provided in the vicinity of the cutting tool on the side opposite to the molded product as viewed from the cutting tool.
When this is applied to an automatic deburring device using a robot, if the robot is a robot with a cutting tool attached to the robot arm, the suction device sucks near the cutting tool on the opposite side of the molded product as viewed from the cutting tool. Even if it is a type of robot that attaches the suction port to the robot arm so that the mouth is positioned, and attaches a molded product to the robot arm and controls the rotation while contacting this molded product with the cutting tool Similarly, a suction port of a suction device is provided in the vicinity of the cutting tool on the side opposite to the molded product as viewed from the cutting tool.
The relationship between the cutting start time of the cutting tool and the starting time of the suction operation of the suction device is such that the suction operation of the suction device is started before the cutting of the cutting tool is started.
[0007]
By doing so, the softer and thinner burrs can be fixed and maintained in a state where tension is applied to the elastic burrs by the suction operation of the suction device, so that the cutting tool can reliably and accurately It is possible to access the part and deburr all from the root part.
In addition, by attaching a cutting tool or a molded product to the final shaft end of the robot and providing a suction port of the suction device near the cutting tool on the opposite side of the molded product when viewed from the cutting tool, the robot operates when there is no interference. Within the range, the suction device can be positioned in any direction in which the burr can be separated from the molded product.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a deburring device according to an embodiment of the present invention will be described with reference to FIG.
FIG. 1 shows a deburring device for rubber-based elastic burrs according to Embodiment 1 of the present invention in which a cutting tool is attached to a robot.
In FIG. 1, reference numeral 11 denotes an arm of a robot 1 (not shown), which is, for example, a 6-degree-of-freedom vertical articulated type that is currently popular in the market. The robot arm 11 is controlled by a control device (not shown) to guide the cutting tool along the periphery of the molded product 9 to be deburred. The cutting tool 5 is fixed to the robot arm 11 of the robot 1 by a fixing jig 12. A suction port 61 of the suction device 6 (not shown) is fixed by the fixing jig 13 in the vicinity of the cutting tool 5 and on the opposite side of the molded product 9. Thus, the point of the present invention is to arrange the suction port 61 of the suction device in the vicinity of the cutting tool on the side opposite to the molded product 9 when viewed from the cutting tool 5. Reference numeral 91 denotes an elastic burr formed on the molded product 9 of the rubber material. The blade 51 attached to the cutting tool 5 is realized by a file, a cutter, or the like, and the elastic burr 91 made of rubber material is scraped or cut off.
[0009]
The term “rubber-based material” as used herein is a generic term for materials in which the burrs formed exhibit elasticity, and specifically includes a material made of an elastomer, a soft material made of plastic, and a material having good elastic characteristics. Specifically, crosslinked structure elastomers, chain thermoplastic elastomers, natural rubber, isoprene rubber, butadiene rubber, chloroprene rubber, butyl rubber, chlorosulfonated polyethylene, epichlorohydrin rubber, nitrile butadiene rubber, acrylic rubber, polysulfide rubber, nitrile isoprene rubber , Silicone rubber, polyvinyl chloride elastomer, chlorinated polyethylene, ethylene vinyl acetate copolymer elastomer, ethylene propylene copolymer elastomer, styrene butadiene elastomer, urethane rubber, fluorine rubber and the like. That is, the burr that can be formed into a molded product made of such a material has elasticity unlike a metallic burr, and is a very soft and thin burr.
[0010]
In the arrangement relationship as shown in FIG. 1, when the suction device 6 is operated prior to the start of the deburring operation, the air in the vicinity of the suction port 61 is sucked toward the suction port 61 and accordingly is formed of a soft material. The soft and thin burr 91 of the molded product 9 is also sucked toward the suction port 61 and fixed to the elastic burr 91 in a tensioned state. The suction operation of the suction device 6 is controlled by the above-described control device (not shown) so that suction is started at an appropriate time in conjunction with the operation of the robot arm 11. As a result, the cutting tool 51 of the cutting tool 5 can reliably and accurately access the root portion of the elastic burr 91, so that all the elastic burr 91 can be removed from the root portion of the molded product 9. In this state, the robot is controlled in the Y direction in FIG. 1 under the control of the control device, so that the elastic burr 91 formed around the molded product 9 can be removed reliably and accurately. . The elastic burr 91 cut or cut by the blade 51 is sucked by the suction port 61, carried to the suction device 6 through the suction hose 62, and collected by a filter or the like provided there. The diameter of the suction port 61 of the suction device 6 is sufficiently large with respect to the blade 51 attached to the cutting tool 5, thereby fixing the elastic burr 91 in front of the cutting direction and cutting out the elastic burr 91 behind the cutting direction. Can be collected. For this reason, scattering of the chips of the elastic burr 91 can be prevented, and the cleanliness is also improved.
[0011]
FIG. 2 shows a rubber-based elastic deburring device according to the second embodiment in which a molded product 9 is attached to a robot arm 12. In FIG. 2, the cutting tool 5 is fixed to the fixing base 7, and the suction port 61 of the suction device, which is a main component of the present invention, is also fixed to the fixing base 7 so as to be near the blade 51 of the cutting tool 5. The suction device 6 is connected to a suction device 6 (not shown) via a suction hose 62. A rubber arm molding 9 is attached to the robot arm 11 via a fixing jig 12. An elastic burr 91 is seen in the molded product 9.
[0012]
2, when the suction device 6 is operated prior to the start of the deburring operation as in FIG. 1, air in the vicinity of the suction port 61 is sucked toward the suction port 61, and accordingly The soft and thin burr 91 of the molded product 9 made of a soft material is also sucked toward the suction port 61 and fixed to the elastic burr 91 in a tensioned state. As a result, the blade 51 of the cutting tool 5 can reliably and accurately access the root portion of the elastic burr 91, so that all burrs can be removed from the root portion of the molded product 9. In this state, the robot operates in the Y direction in FIG. 2 under the control of the control device, so that the base portion of the elastic burr 91 formed around the molded product 9 is brought into contact with the blade 51 reliably and accurately. Thus, the molded product 9 can be rotated. The elastic burr 91 cut or cut off by the blade 51 in this way is sucked by the suction port 61, carried to the suction device 6 through the suction hose 62, and collected by a filter or the like provided there.
[0013]
The two embodiments of the present invention have been described above, but the present invention is not limited to this, and it goes without saying that the present invention is also applicable to a manual deburring device that does not use a robot. That is, in the case of a manual deburring device, the same effect can be obtained by providing a suction port of the suction device in the vicinity of the cutting tool.
[0014]
【The invention's effect】
As described above, since the deburring device according to the present invention has the suction port of the suction device in the vicinity of the cutting tool, even if it is soft and thin, such as an elastic burr, the tension is applied to the burr. Since it can be fixed, highly accurate deburring can be performed reliably and accurately.
Further, since the elastic burrs that have been cut off or cut off are sucked into the suction device without falling or scattering, highly clean deburring can be performed.
In addition, when a cutting tool or a molded product is attached to the robot arm and the suction port of the suction device is placed near the cutting tool, the high-quality elastic varieties are automatically and in a short time without human intervention. Can be taken.
And, since the suction operation of the suction device is started before the cutting of the cutting tool starts, it can be fixed in a state where tension is applied to the elastic burr before deburring, and reliable and accurate deburring can be performed. Can do.
[Brief description of the drawings]
FIG. 1 shows an elastic deburring device according to a first embodiment of the present invention.
FIG. 2 shows an elastic deburring device according to a second embodiment of the present invention.
FIG. 3 is a conventional elastic deburring device.
[Explanation of symbols]
11: Robot arm 12: Fixing jig 13: Fixing jig 5: Cutting tool 51: Cutting tool 6: Suction device 61: Suction port 62: Suction hose 7: Fixing base 9: Molded product 91 of rubber material: Elastic burr

Claims (2)

A robot arm to which a cutting tool is attached, and controls the robot arm so that the cutting tool attached to the robot arm is brought into contact with the base of an elastic burr of the molded product and guided along the periphery of the molded product; In a deburring device for elastic burrs by a robot capable of handling soft thin-walled elastic burrs formed around the molded product by the above, near the cutting tool opposite to the molded product as viewed from the cutting tool The suction port is attached to the robot arm so that the suction port of the suction device is positioned, and the suction operation of the suction device is started before the cutting of the cutting tool is started. A deburring device for elastic burrs, wherein the elastic burrs are removed in a state where tension is applied to the burrs. A molded product having a fixed cutting tool and a robot arm, and having a soft thin elastic burr formed around it, is attached to the robot arm, and the robot arm is controlled so that the base of the elastic burr of the molded product is In an elastic burr deburring device capable of removing the elastic burr by rotating the molded product in contact with the cutting tool ,
A suction port of a suction device is provided in the vicinity of the cutting tool opposite to the molded product as viewed from the cutting tool, and the suction operation of the suction device is started before the cutting of the cutting tool is started. The deburring device is characterized in that the elastic burr is removed in a state where tension is applied to the elastic burr.

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