Deburring device

Abstract

To provide a deburring device which can suppress occurrence of inferior quality of surface of a workpiece and assembly failure of a component in a processing step due to burrs adhered to the workpiece.SOLUTION: A deburring device comprises: a cylindrical body part; a plurality of leg parts which protrude from a portion near to an outer edge of a bottom surface of the body part to one end side in an axial direction of the body part, and are provided apart from each other in a circumferential direction of the body part; first deburring means which is provided at a position protruded from a center of the bottom surface of the body part to one end side, and is fixed to the body part through an elastic member; a plurality of second deburring means which are provided at tips of projections of the plurality of leg parts; a drive part which rotates and drives the first deburring means and the second deburring means; and a plurality of magnets which are respectively provided at tip parts close to the tips in the plurality of leg parts, and absorb, when removing burrs adhered to a rivet through rotation of the first deburring means and the second deburring means by the drive part, the removed burrs.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a deburring device. [Background technology]

[0002] Conventionally, deburring devices have been known for removing burrs generated on the periphery of a workpiece after processing using a processing machine such as a press or a laser processing machine. For example, the deburring device described in Patent Document 1 is a device that removes burrs by rotating a brush-like tool and has a brush floating mechanism. In this device, the pressing force of the brush on the workpiece during deburring is controlled by the floating mechanism, thereby performing an appropriate deburring operation without damaging the workpiece surface. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-233350 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the deburring device of the above configuration, the removed burrs tend to adhere to the workpiece or its surroundings, which can lead to poor quality on the workpiece surface or assembly problems during subsequent workpiece processing. [Means for solving the problem]

[0005] The present disclosure can be realized in the following forms. [Mode 1] A deburring device for removing burrs from iron rivets, comprising: a cylindrical main body; a plurality of legs protruding from a portion near the outer edge of the bottom surface of the main body toward one end in the axial direction of the main body and spaced apart from one another in the circumferential direction of the main body; a first deburring means provided at a position protruding from the center of the bottom surface of the main body toward the one end and fixed to the main body via an elastic member; a plurality of second deburring means provided at the tips of the protruding ends of the plurality of legs; and the first deburring means and the second deburring means. a drive unit that drives the rotation of the plurality of legs; and a plurality of magnets that are respectively provided at the tip portions of the plurality of legs that are near the tip portions and that attract the removed burrs when the drive unit rotates the first deburring means and the second deburring means to remove the burrs attached to the rivet, the plurality of magnets being embedded inside the plurality of legs so that a portion of the magnets is exposed inside the plurality of legs relative to the rotation axis of the first deburring means and the second deburring means.

[0006] According to one aspect of the present disclosure, there is provided a deburring device for removing burrs from an iron rivet, the deburring device comprising: a cylindrical main body, a plurality of legs protruding from an outer edge of a bottom surface of the main body toward one axial end of the main body and spaced apart from one another in a circumferential direction of the main body, a first deburring means provided at a position protruding from the center of the bottom surface of the main body toward the one end and fixed to the main body via an elastic member, a plurality of second deburring means provided at tips of the protruding legs, a drive unit that rotates the first deburring means and the second deburring means, and a plurality of magnets provided at tips of the plurality of legs near the tips, the magnets attracting the removed burrs when the drive unit rotates the first deburring means and the second deburring means to remove the burrs from the rivet. With this type of deburring device, the removed burrs are attracted to and held by the magnet, preventing them from adhering to the workpieces to be joined with the rivet. This reduces the risk of the adhering burrs causing poor quality on the workpiece surface or causing assembly problems in the subsequent workpiece processing steps. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a diagram schematically illustrating an overall configuration of a deburring device according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view schematically showing the deburring device. [Figure 3] FIG. 2 is a diagram schematically illustrating the overall configuration of the deburring device during operation. DETAILED DESCRIPTION OF THE INVENTION

[0008] A. First embodiment: A1. Composition of deburring device 1: A first embodiment of the present disclosure will be described below with reference to Figures 1 to 3. Figure 1 is a diagram schematically showing the overall configuration of a deburring device 1 in the first embodiment of the present disclosure.

[0009] First, an example of an object 2 (hereinafter also referred to as work) to be deburred will be described. As shown in Fig. 1, the object 2 is formed by joining an aluminum plate 21 and an iron plate 22 using an iron rivet 23. The object 2 is arranged so that the lower surface of the aluminum plate 21 abuts against the upper surface of the iron plate 22. Furthermore, the rivet 23 has a rivet body 23a inserted from above, that is, the aluminum plate 21 side, and a rivet head 23b arranged on the aluminum plate 21. For example, the rivet head 23b has a circular shape when viewed from above.

[0010] In the example shown in Fig. 1, an iron burr 24 is formed on the surface of a rivet head 23b of a rivet 23. The deburring device 1 removes the iron burr 24 attached to the rivet 23. As shown in Fig. 1, the deburring device 1 is disposed above an object 2 and descends to contact the object 2 to deburr it. In the following description, the up-down direction in Fig. 1 is referred to as the Z direction, the left-right direction as the X direction, and the direction perpendicular to both the X and Z directions as the Y direction.

[0011] The deburring device 1 includes a main body 11, a first deburring means 12, a plurality of legs 13, a plurality of second deburring means 14, and a plurality of magnets 15. In this embodiment, there are three legs 13, three second deburring means 14, and three magnets 15. The main body 11 is formed wide in the X and Y directions and is a cylindrical member. The length of the main body 11 in the X and Y directions is at least longer than the length of the rivet head 23b of the rivet 23 in the X and Y directions.

[0012] A rotation shaft 16 is connected to the center of the upper surface of the main body 11 in the Z direction. When the rotation shaft 16 rotates around the Z axis extending in the Z direction, the main body 11 rotates around the Z axis. As will be described in more detail later, this rotation of the main body 11 causes the first deburring means 12 and the second deburring means 14 connected to the lower surface (bottom surface) 11B of the main body 11 to rotate around the Z axis.

[0013] The upper end of the first deburring means 12 is connected to the lower surface 11B of the main body 11 via an elastic member 17. More specifically, the upper end of the elastic member 17 is connected to the center of the lower surface 11B of the main body 11 in the Z direction. The lower end of the elastic member 17 is connected to the upper end of the first deburring means 12. In this embodiment, the elastic member 17 is a spring, but the elastic member 17 is not limited to a spring.

[0014] Furthermore, the entire lower surface of the lower end of first deburring means 12 is a burr removal surface. The surface provided at the lower end of first deburring means 12 is circular when viewed from below, and its size is approximately the same as that of the upper surface of rivet head 23b. When main body 11 rotates due to the rotational force applied by rotation shaft 16, first deburring means 12 simultaneously rotates about the Z axis.

[0015] The first deburring means 12 rotates with the burr removal surface at its lower end in contact with the upper surface of the rivet head 23b. This enables the first deburring means 12 to remove iron burrs 24 adhering to the upper surface of the rivet head 23b. The first deburring means 12 is an inner brush with a burr removal surface at its lower end.

[0016] FIG. 2 is a cross-sectional view schematically illustrating the deburring device 1. In order to explain the configuration of the legs 13, FIG. 2 omits illustration of components other than the legs 13 and the magnet 15. The figure also illustrates a state in which the removed iron burr 24 is attracted and held by the magnet 15. As shown in FIGS. 1 and 2 , the three legs 13 are provided so as to protrude from a portion near the outer edge of the lower surface 11B of the main body 11 toward one end (the lower side in FIG. 1 ) in the axial direction (Z-axis direction), and are fixed to the main body 11 in an arrangement spaced apart at equal intervals around the circumferential direction of the main body 11. The upper end of each leg 13 is connected to the lower surface 11B of the main body 11.

[0017] Each leg 13 has a shape obtained by dividing a cylindrical member in the circumferential direction by a plane that passes through the central axis of the cylindrical member and extends in the axial direction. When viewed from below, the leg 13 forms a part of a circular ring shape with a central angle of approximately 80 degrees. A slit 18 is formed between each pair of legs 13 in the circumferential direction. When viewed from below, the slit 18 forms a part of a circular ring shape with a central angle of approximately 40 degrees. Each leg 13 is provided so as to surround the outer periphery of the elastic member 17 and the first deburring means 12. The cylindrical space surrounded by the lower ends of the three legs 13 is set to be larger than the head of the rivet 23.

[0018] The second deburring means 14 is fixed to the tip of the protruding end of the leg portion 13, and is located roughly around the periphery of the first deburring means 12. When the rotation shaft 16 rotates around the Z axis as shown by the arrow A1 in Figures 2 and 3, the main body portion 11 rotates, and the second deburring means 14 also rotates around the Z axis at the same time.

[0019] A drive unit (not shown) is connected to the rotary shaft 16. The drive unit rotates the first deburring means 12 and the second deburring means 14. Each magnet 15 is provided on the inside of the tip end portion of each leg 13, near the tip end. When the drive unit rotates the first deburring means 12 and the second deburring means 14 to remove iron burrs 24 adhering to the rivet 23, the magnet 15 attracts the removed iron burrs 24.

[0020] The second deburring means 14 rotates with a burr removal surface provided at its lower end in contact with the upper surface of the aluminum plate 21. During operation, the second deburring means 14 cooperates with the first deburring means 12 to remove iron burrs 24 adhering to the rivets 23. The second deburring means 14 can also remove aluminum burrs adhering to the upper surface of the aluminum plate 21. The second deburring means 14 is an outer brush having a burr removal surface at its lower end.

[0021] The burr removal surfaces provided at the lower ends of the first deburring means 12 and the second deburring means 14 may be made of a brush or may be made of a blade.

[0022] A2. Operation of deburring device 1: Next, the operation of the deburring device 1 described above in detail and the process of removing iron burrs 24 using the deburring device 1 will be described. First, as shown in FIG. 1, the deburring device 1 is placed above the object 2. FIG. 3 is a diagram schematically showing the overall configuration of the deburring device 1 during operation. Note that FIG. 3 shows a state in which the removed iron burrs 24 are attracted to and held by the magnet 15. After the deburring device 1 is placed above the object 2, it is lowered as shown in FIG. 3. This allows the deburring device 1 to be set on the object 2.

[0023] Here, the burr removal surface provided at the lower end of the second deburring means 14 comes into contact with the upper surface of the aluminum plate 21, and the position of the first deburring means 12 in the Z direction is adjusted by the elastic member 17, so that the burr removal surface provided at the lower end of the first deburring means 12 comes into contact with the upper surface of the rivet head 23b.

[0024] The force applied to the burr removal surface of the first deburring means 12 and the burr removal surface of the second deburring means 14 varies depending on the amount of pressure with which the deburring device 1 is pressed against the object 2. In particular, with respect to the first deburring means 12, when the deburring device 1 is pressed strongly against the object 2, the elastic member 17 contracts, and the burr removal surface is pressed strongly against the rivet head 23b of the rivet 23.

[0025] In this case, it is preferable that the height positions of the rivet head 23b and the magnet 15 are approximately the same. In this way, even if the clearance in the radial direction (XY direction) between the first deburring means 12 and the second deburring means 14 is narrow, the iron burr 24 can be easily attracted reliably by the magnet 15 provided around the rivet head 23b, and it is possible to prevent the iron burr 24 from getting caught in the clearance and causing poor sliding. However, if the clearance is sufficiently wide, there are no particular restrictions on the height positions of the rivet head 23b and the magnet 15.

[0026] Note that the second deburring means 14 is connected to the main body 11 without the elastic member 17, so when the deburring device 1 is pressed against the object 2, the burr removal surface is pressed firmly against the aluminum plate 21. The rotating shaft 16 then rotates, causing the first deburring means 12 and the second deburring means 14 to rotate via the main body 11. The iron burr 24 is removed by rotating the first deburring means 12 while it is in contact with the rivet head 23b of the rivet 23. At this time, the removed iron burr 24 is attracted to and held by the magnet 15.

[0027] After the removal of the iron burrs 24 from the target object 2 is completed, the deburring device 1 is moved away from the target object 2, and the first deburring means 12 and the second deburring means 14 are rotated at a higher rotation speed than during deburring. This allows the iron burrs 24 adhering to the magnet 15 to be expelled from the slit to the outside, as shown by arrow A2 in Figure 2.

[0028] According to the first embodiment, the removed iron burrs 24 are attracted and held by the magnet 15 and do not adhere to the aluminum plate 21 of the workpiece. This prevents the adhered iron burrs 24 from causing poor quality on the workpiece surface or causing assembly defects in the subsequent workpiece processing steps.

[0029] The present disclosure is not limited to the above-described embodiments and can be realized in various configurations without departing from the spirit of the present disclosure. For example, the technical features in each embodiment corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0030] REFERENCE SIGNS LIST 1... deburring device, 2... object, 11... main body, 12... first deburring means, 13... legs, 14... second deburring means, 15... magnet, 16... rotating shaft, 17... elastic member, 18... slit portion, 21... aluminum plate, 22... iron plate, 23... rivet, 23a... rivet body, 23b... rivet head, 24... iron burr

Claims

[Claim 1] A deburring device that removes burrs attached to iron rivets, A cylindrical main body, a plurality of legs projecting from a portion of the bottom surface of the main body near an outer edge toward one end side of the main body in the axial direction and spaced apart from one another in the circumferential direction of the main body; a first deburring means provided at a position protruding from the center of the bottom surface of the main body toward the one end and fixed to the main body via an elastic member; a plurality of second deburring means provided at the tips of the protruding ends of the plurality of legs; a drive unit that rotationally drives the first deburring means and the second deburring means; a plurality of magnets provided at tip portions of the plurality of legs that are in the vicinity of the tip portions, and which attract the removed burrs when the first deburring means and the second deburring means are rotated by the driving unit to remove the burrs attached to the rivet, the plurality of magnets being embedded inside the plurality of legs so that a portion of the magnets is exposed inside the plurality of legs relative to the rotation axes of the first deburring means and the second deburring means; A deburring device comprising:

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