Deburring device

Abstract

To simultaneously remove two kinds of burrs by performing deburring in the state of applying different loads onto a rivet and around the rivet, respectively.SOLUTION: A deburring device 1 comprises: first deburring means 12 that is provided in the center; second deburring means 13 that is provided on the periphery of the first deburring means 12; and a fixing part 11 for fixing each of the first and second deburring means 12 and 13. Either the first deburring means 12 or the second deburring means 13 is fixed to the fixing part 11 via an elastic member 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] When using a resistance welding machine to join aluminum and steel with a rivet (iron), burrs may occur around or on the rivet.

[0003] Recently, a technology in this field has been disclosed in JP 2007-144604 A. The deburring device described in this publication is equipped with a base and brush pieces attached to the base, and can perform deburring by applying a constant load to the rivet and the periphery of the rivet with one type of brush. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-144604 A Summary of the Invention [Problem to be solved by the invention]

[0005] Here, aluminum burrs that occur around the rivet are fixed to the rivet or the aluminum plate, whereas iron burrs that occur on the rivet can be removed relatively easily.

[0006] However, in the conventional deburring device described above, it is not possible to remove aluminum burrs with the pressing force required to remove iron burrs, and conversely, the rivet may be scraped off if the pressing force required to remove aluminum burrs is used. Therefore, in order to remove both aluminum and iron burrs, two types of tools must be used to remove the burrs twice, depending on the burr to be removed, which results in a problem of time-consuming deburring. The present invention provides a deburring device capable of simultaneously removing two types of burrs. [Means for solving the problem]

[0007] The deburring device of the present invention comprises a first deburring means provided in the center, a second deburring means provided around the first deburring means, and fixing portions for respectively fixing the first deburring means and the second deburring means, and either the first deburring means or the second deburring means is fixed to the fixing portion via an elastic member. This allows deburring to be performed with different loads applied to the rivet and the periphery of the rivet. Effect of the Invention

[0008] This allows two types of burrs to be removed at the same time. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing a configuration of a deburring device. [Diagram 2] FIG. 1 illustrates a deburring process. [Diagram 3] FIG. 13 is a diagram showing another configuration of the deburring device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, a deburring device 1 includes a fixed part 11, a first deburring means 12 fixed to the fixed part 11 via an elastic member 21, and a second deburring means 13 provided around the first deburring means 12.

[0011] Here, a description will be given of an example of an object 2 to be deburred by the deburring device 1. The object 2 includes iron 31 and aluminum 32 to be joined, and a rivet 33 to be welded to the iron 31 and aluminum 32 by a welding machine.

[0012] As shown in FIG. 1, the deburring device 1 is disposed above an object 2, and then lowers to contact the object 2 and perform deburring.

[0013] In the target object 2, the aluminum 32 plate is disposed so that the lower surface of the aluminum 32 plate abuts against the upper surface of the iron 31 plate. Furthermore, the rivet 33 has a rivet body 33a inserted from above, that is, the aluminum 32 side, and a flange 33b disposed on the plate surface of the aluminum 32. For example, the flange 33b has a circular shape when viewed from above.

[0014] An iron burr 41 is formed on the surface of the flange 33b of the rivet 33. Furthermore, an aluminum burr 42 is formed on the upper surface of the aluminum 32 and to the side of the flange 33b of the rivet 33. The deburring device 1 removes the iron burr 41 and the aluminum burr 42 at the same time.

[0015] In the following description, the up-down direction in FIG. 1 is defined as the Z direction, the left-right direction as the X direction, and the direction perpendicular to both the X direction and the Z direction as the Y direction.

[0016] The fixed portion 11 includes a base portion 11a and a rotating shaft 11b connected to the top of the base portion 11a.

[0017] For example, the base 11a is formed to be wide in the XY directions and is disk-shaped having a surface in the Z direction. The length of the base 11a in the XY directions is at least longer than the length of the flange 33b of the rivet 33 in the XY directions.

[0018] The rotation axis 11b is an axis connected to the center of the base 11a in the XY directions and to the upper surface in the Z direction. The rotation of the rotation axis 11b around an axis extending in the Z direction causes the base 11a to rotate around the Z axis. As will be described in more detail later, the rotation of the base 11a causes the first deburring means 12 and the second deburring means 13 connected to the lower surface of the base 11a to rotate around the Z axis.

[0019] The upper end of the first deburring means 12 is connected to the lower surface of the base portion 11a via an elastic member 21.

[0020] More specifically, the upper end of the elastic member 21 is connected to the center of the base 11a in the XY directions and to the lower surface in the Z direction. Also, the lower end of the elastic member 21 is connected to the upper end of the first deburring means 12.

[0021] It should be noted that a spring can be used as the elastic member 21, and although the following description will be given assuming that a spring is used, the elastic member is not limited to this.

[0022] Moreover, the entire lower surface of the lower end of the first deburring means 12 is a burr removal surface. Typically, the surface provided at the lower end of the first deburring means is circular when viewed from below, and approximately coincides with the upper surface of the flange 33b. The first deburring means 12 rotates about the Z axis as the base 11a rotates due to the rotational force applied by the rotating shaft 11b.

[0023] The first deburring means 12 rotates with a burr removal surface provided at the lower end in contact with the upper surface of the flange 33b. This allows the first deburring means 12 to remove iron burrs 41 adhering to the upper surface of the flange 33b. In other words, the first deburring means 12 is an inner brush having a burr removal surface at its lower end.

[0024] For the burr removing surface provided at the lower end of the first deburring means 12, a brush may be used, or a blade may be used.

[0025] The second deburring means 13 is disposed so as to surround the first deburring means 12 in the XY directions. For example, the second deburring means 13 is cylindrical when viewed from below, and the first deburring means 12 is disposed within a hollow portion formed in the center.

[0026] An upper end of the second deburring means 13 is connected to the lower surface of the base portion 11a. Therefore, when the rotating shaft 11b rotates around the Z axis, the second deburring means 13 also rotates around the Z axis at the same time.

[0027] The second deburring means 13 rotates with a burr removal surface provided at the lower end in contact with the upper surface of the aluminum 32. This allows the second deburring means 13 to remove aluminum burrs 42 adhering to the upper surface of the aluminum 32. In other words, the second deburring means 13 is an outer brush having a burr removal surface at its lower end.

[0028] For the burr removing surface provided at the lower end of the first deburring means 12, a brush may be used, or a blade may be used.

[0029] Here, since the first deburring means 12 is connected to the base 11a via the elastic member 21, when the second deburring means 13 is abutted against the upper surface of the aluminum 32, the position is adjusted so that the first deburring means 12 also abuts against the flange 33b at the same time.

[0030] Here, an example of a burr removal process using the burr removing device 1 will be described with reference to Figs. 2(a) to 2(c).

[0031] As shown in FIG. 2( a ), the deburring device 1 is placed above the object 2 .

[0032] 2(b), the deburring device 1 is lowered, whereby the deburring device 1 is set on the target object 2.

[0033] Here, the burr removal surface provided at the lower end of the second deburring means 13 comes into contact with the upper surface of the aluminum 32, and the position of the first deburring means 12 in the Z direction is adjusted by the elastic member 21, 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 flange 33b.

[0034] At this time, the force applied to the burr removal surface of the first deburring means 12 and the burr removal surface of the second deburring means 13 changes depending on the amount of pressure with which the deburring device 1 is pressed against the object 2. In particular, with regard to the first deburring means 12, when the deburring device 1 is pressed strongly against the object 2, the elastic member 21 contracts, and the burr removal surface is pressed strongly against the flange 33b of the rivet 33.

[0035] In addition, since the second deburring means 13 is connected to the base 11a without the elastic member 21 therebetween, when the deburring device 1 is pressed against the object 2, the burr removal surface is pressed strongly against the aluminum 32.

[0036] 2(c), the rotating shaft 11b rotates, whereby the first deburring means 12 and the second deburring means 13 each rotate in accordance with the rotation of the base portion 11a.

[0037] Therefore, the first deburring means 12 can be brought into contact with the flange 33b of the rivet 33 to remove the iron burrs 41, and at the same time, the second deburring means 13 can be brought into contact with the aluminum 32 to remove the aluminum burrs 42.

[0038] The present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention. In other words, the above description has been omitted or simplified as appropriate for the purpose of clarity, and a person skilled in the art can easily modify, add, or convert each element of the embodiment within the scope of the present invention.

[0039] In the above explanation, the upper end of the first deburring means 12 is connected to the base 11a via the elastic member 21, and the upper end of the second deburring means 13 is connected directly to the base 11a, but it is also possible to reverse these.

[0040] For example, as shown in FIG. 3, the upper end of the first deburring means 12 may be directly connected to the lower surface of the base 11a, and the upper end of the second deburring means 13 may be connected to the base 11a via an elastic member 21.

[0041] More specifically, the second deburring means 13 has a structure including a main body 13a and a guide portion 13b that connects the upper end of the main body 13a to the base portion 11a. A burr removal surface is provided at the lower end of the main body 13a. The main body 13a and the guide portion 13b are slidable in the Z direction.

[0042] Furthermore, a coil spring is used as elastic member 21, and the upper end of elastic member 21 is connected to the lower end of base portion 11a and the lower end of elastic member 21 is connected to the upper end of main body portion 13a with guide portion 13b contained in the center of the coil.

[0043] With this configuration, the first deburring means 12 can be brought into contact with the flange 33b of the rivet 33 to remove the iron burrs 41, while the second deburring means 13 can be brought into contact with the aluminum 32 to remove the aluminum burrs 42.

[0044] This configuration is particularly effective in cases where iron burrs 41 formed on flange 33b of rivet 33 are strongly fixed and aluminum burrs 42 formed on aluminum 32 can be easily removed.

[0045] In addition, although the description has been given of either the first deburring means 12 or the second deburring means 13 being fixed to the fixed portion 11 via the elastic member 21, both the first deburring means 12 and the second deburring means 13 may be fixed to the fixed portion 11 via the elastic member 21. [Explanation of symbols]

[0046] 1 Deburring device 2. Object 11 Fixed part 11a base 11b Rotation axis 12 First deburring method 13 Second deburring method 13a Main body 13b Guide part 21 Elastic member 31 Iron 32 Aluminum 33 Rivet 33a Rivet body 33b flange 41 Iron Burr 42 Aluminum burr

Claims

[Claim 1] A deburring device for deburring an object having a first material and a second material having the first material placed at a central portion thereof, comprising: a first deburring means provided in a center thereof for deburring the first material; a second deburring means disposed around the first deburring means and configured to deburr the second material; a fixing portion for fixing the first deburring means and the second deburring means, one of the first deburring means and the second deburring means is fixed to the fixing portion via an elastic member; The first deburring means deburrs the first material while the second deburring means deburrs the second material, in a state in which a force applied to a burr removal surface of the first deburring means is different from a force applied to a burr removal surface of the second deburring means. Deburring device.

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