JP2019171541A - Workpiece polishing device and workpiece polishing method using the same - Google Patents

Abstract

To provide a workpiece polishing device and a workpiece polishing method which enable increase of efficiency of polishing work.SOLUTION: A workpiece polishing device includes: a media tank 10 in which a media M is placed and which opens at an upper part; and a robot 20 which grips a workpiece 30 that is a polishing object and moves and places the workpiece 30 in contact with the media M to polish the workpiece 30 in the media tank 10. The robot 20 grips the workpiece 30 that is the polishing object and moves and places the workpiece 30 in contact with the medium M to polish the workpiece 30 in the media tank 10. A jig 40 which is gripped by the robot 20 is attached to a non-polished part 31 of the workpiece 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a workpiece polishing apparatus and a workpiece polishing method using the apparatus.

  Conventionally, as seen in, for example, Patent Document 1, a cast product held by a robot is pressed against a rotating first abrasive material, polished and roughly finished, and then conveyed to a second polishing apparatus by a conveying means. In addition, there is known a polishing apparatus for a cast product that is polished and finished in a barrel tank together with a second abrasive made of small pieces.

  A barrel polisher has a plurality of barrel tanks arranged in series in the transport direction. Each barrel tank is filled with one rough cast product and a large number of second abrasives called media, and this barrel tank is vibrated by an eccentric cam fixed to the rotating shaft of the motor. By polishing, the cast product is polished and finished.

  Then, when the cast product is taken out from the barrel tank, in order to expose the cast product buried in the medium, a part of the media is discharged by opening the gate at the bottom of the barrel tank.

Japanese Patent Laid-Open No. 10-156719

In the above-described prior art, when the cast product is taken out after the polishing process, in order to expose the cast product buried in the media, it is necessary to perform a media discharge operation for discharging a part of the media from the barrel tank.
Therefore, it is difficult to increase the efficiency of the polishing operation.

  The problem to be solved by the present invention is to provide a workpiece polishing apparatus and a workpiece polishing method capable of increasing the efficiency of the polishing operation.

In order to solve the above problems, the workpiece polishing apparatus of the present invention is:
A media tank that contains media and is open at the top,
A robot that grabs a workpiece to be polished, moves the workpiece in the media tank, contacts the media, and polishes the workpiece;
It is characterized by having.
According to this workpiece polishing apparatus, the robot can grind the workpiece by holding the workpiece to be polished, moving the workpiece in the media tank, and bringing it into contact with the media. be able to.
Therefore, unlike the prior art, it is not necessary to eject some media when the workpiece is removed.
Therefore, according to this workpiece polishing apparatus, it is possible to increase the efficiency of the polishing operation.

In this workpiece polishing machine,
It can be set as the structure further equipped with the jig attached to the non-polishing part of the said workpiece | work, and being gripped with the said robot.
If comprised in this way, a workpiece | work can be grind | polished, without damaging the grinding | polishing part of a workpiece | work.

In this workpiece polishing machine,
When the workpiece is a workpiece having a U-shaped section having a U-shaped cross section, having a bottom plate and a side plate rising integrally from the bottom plate,
The jig may have a reduced block portion that enters the U-shaped portion of the workpiece and reduces the internal volume of the U-shaped portion.
With this configuration, the jig reduction block enters the U-shaped portion of the workpiece, thereby reducing the amount of media entering the U-shaped portion of the workpiece, thereby facilitating the movement of the workpiece in the media tank. be able to.

In this workpiece polishing machine,
The media tank has a media tank for rough polishing and a media tank for finish polishing,
The robot may be arranged between a media tank for rough polishing and a media tank for finish polishing.
If comprised in this way, the rough grinding | polishing and finish grinding | polishing of a workpiece | work can be performed efficiently with one robot.

In order to solve the above problems, the work polishing method of the present invention uses any one of the work polishing apparatuses described above.
According to this workpiece polishing method, the efficiency of the polishing operation can be improved.

In this workpiece polishing method,
It can be set as the structure which reciprocates the said workpiece | work in a linear direction and performs a hairline process on the surface of a workpiece | work.
If comprised in this way, the hairline process can be efficiently given to the surface of a workpiece | work.

In this workpiece polishing method,
After the workpiece is polished, the workpiece can be inclined to allow the medium in the workpiece to flow out.
If comprised in this way, even when the said workpiece | work is a workpiece | work which has a U-shaped part which has a bottom plate and a side plate which stands | starts up integrally from this bottom plate, and a cross-section becomes a U-shape, a medium will flow out efficiently from the inside of a workpiece | work. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory perspective view of an embodiment of a workpiece polishing apparatus or workpiece polishing method according to the present invention. (A)-(d) is operation | movement explanatory drawing. Operation explanatory drawing. (A)-(d) is operation | movement explanatory drawing. . The schematic plan view of other embodiment. It is a figure which shows an example of a workpiece | work, (a) is a front view, (b) is bb sectional drawing in Fig. (A), (c) is a front view which shows a processing example. It is a figure which shows the specific example of a workpiece | work, (a) is a side view of the motorcycle in which the workpiece | work was used, (b) is a top view of a workpiece | work, (c) is a front view of figure (b).

  Embodiments of a workpiece polishing apparatus or a workpiece polishing method according to the present invention will be described below with reference to the drawings. In each figure, the same reference numerals are given to the same or corresponding parts.

As shown in FIG. 1, the workpiece polishing apparatus 1 according to this embodiment includes a media tank 10 in which a medium M is inserted and an upper portion is opened, and a workpiece 30 to be polished, and holds the workpiece 30 in the media tank 10. And a robot 20 that moves and contacts the medium M to polish the workpiece 30.
The workpiece polishing method of this embodiment is a method of polishing the workpiece 30 by holding the workpiece 30 to be polished by the robot 20 and moving the workpiece 30 in the media tank 10 to contact the medium M.

  According to this workpiece polishing apparatus or workpiece polishing method, the robot 20 can polish the workpiece 30 by grasping the workpiece 30 to be polished, moving the workpiece 30 in the media tank 10 and bringing it into contact with the medium M. The workpiece 30 can be taken out by the robot 20 as it is.

Therefore, unlike the prior art, the work of discharging a part of the medium M when the work 30 is taken out becomes unnecessary.
Therefore, according to the workpiece polishing apparatus or the workpiece polishing method, the efficiency of the polishing operation can be improved.

The medium is a polishing stone or an abrasive, and an appropriate amount of medium M and water are put in the media tank 10 and a compound (polishing aid) is put in if necessary.
The robot 20 may have any structure as long as it can move the work 30 as necessary in the media tank 10. In this embodiment, a 6-axis robot 20 is employed. Thereby, all the operations described below are possible.

In addition to moving the workpiece 30 in the vertical direction, the robot 20 can move the workpiece 30 in the front-rear and left-right directions as shown in FIG.
Therefore, according to the workpiece polishing apparatus or the workpiece polishing method, the robot 30 can freely move the workpiece 30 in the media tank 10 in accordance with the shape of the workpiece 30 and the target polishing state (the surface state of the workpiece to be obtained by polishing). The desired polishing state can be obtained by freely moving.

  For example, as shown in FIG. 2B, the edge 30 of the work 30 is appropriately moved by rotating the work 30 back and forth, right and left in the media tank 10 so that the edge 36 of the work 30 contacts the medium M. The surface of the workpiece 30 can be polished simultaneously with the deburring.

  Further, for example, as shown in FIG. 3, the polishing part 32 of the workpiece 30 is brought into contact with the medium M and moved linearly, so that the polishing part 32 is subjected to hairline processing (about the hair in one direction). It is possible to efficiently perform processing that gives fine scratches. An example of the grinding | polishing part 32 to which the hairline process was given is shown in FIG.6 (c).

When performing hairline processing, for example, as shown in FIG. 4, the medium M can be contacted only when moving in one direction (X1 direction).
More details
(A)
As shown in FIG. 4A, the polishing unit 32 of the work 30 is brought into contact with the medium M, and the work 30 is moved in one direction (X1 direction).
(B)
As shown in FIG. 2B, the work 30 is moved upward (see arrow Y1), and the polishing portion 32 of the work 30 is separated from the medium M.
(C)
As shown in FIG. 3C, the workpiece 30 is moved in the other direction (arrow X2 direction).
(D)
As shown in FIG. 4D, the work 30 is moved downward (see arrow Y2), and the polishing portion 32 of the work 30 is brought into contact with the medium M as shown in FIG. The work 30 is moved.
The operations (a) to (d) are repeated as necessary, and the polishing unit 32 is subjected to hairline processing.

1 and 2, reference numeral 40 denotes a jig that is attached to the non-polishing part 31 of the work 30 and is held by the robot 20.
When such a jig 40 is used, the workpiece 30 can be polished without damaging the polishing portion 32 of the workpiece 30.

The jig 40 is attached to the workpiece 30 in advance.
The jig 40 can be attached to the workpiece 30 by bolting or a known clamping mechanism.

  For example, as shown in FIG. 6, when the work 30 is a work 30 having a U-shaped portion 35 having a U-shaped cross section, which includes a bottom plate 33 and a side plate 34 rising integrally from the bottom plate 33, As shown in FIG. 2, the jig 40 has a reduced block portion 41 that enters the U-shaped portion 35 of the work 30 and reduces the internal volume of the U-shaped portion 35.

  With this configuration, the reduced block portion 41 of the jig 40 enters the U-shaped portion 35 of the workpiece 30 so that, for example, as shown in FIG. The amount of the medium M1 that enters can be reduced, whereby the movement of the workpiece 30 in the media tank 10 can be facilitated.

  For example, as shown in FIG. 2B, when the medium M enters the U-shaped portion 35 of the workpiece 30 during the polishing operation, the workpiece 30 is moved as shown in FIG. The medium 30 is lifted from the medium M, and the work 30 is tilted as shown in FIG.

  If comprised in this way, even if the workpiece | work 30 is the workpiece | work 30 which has the U-shaped part 35 as mentioned above, the medium M1 can be efficiently flowed out from the inside of the workpiece | work 30. FIG.

In the embodiment shown in FIG. 5, the media tank 10 has a media tank 10A for rough polishing and a media tank 10B for finish polishing.
The robot 20 is disposed between the media tank 10A for rough polishing and the media tank 10B for finish polishing.

With this configuration, it is possible to efficiently perform rough polishing and finish polishing of the workpiece 30 with one robot 20.
That is, the robot 20 performs a rough polishing operation on the workpiece 30 in the media tank 10A for rough polishing, and then rotates in the direction of the arrow R2 to perform final polishing of the workpiece 30 in the media tank 10B for final polishing.

The coarse polishing medium tank 10A contains a coarse polishing medium M (A), and the final polishing media tank 10B contains a final polishing medium M (B).
Reference numeral 51 denotes a work supply table, and the work 30 to which the jig 40 is previously attached is supplied onto the work supply table 51.
Reference numeral 52 denotes a finished product dispensing table.
The robot 20 grabs the workpiece 30 from the workpiece supply table 51, performs the rough polishing operation and the final polishing operation, and then places the processed workpiece 30 on the finished product dispensing table 52.
Thereafter, the jig 40 is removed from the work 30 at an appropriate position.

FIG. 7 is a diagram illustrating a specific example of the work 30.
Since the workpiece 30 is a side cover of a motorcycle as shown in FIG. 7A and is a press-formed product of an aluminum plate, burrs are generated at the edge 36.

For such a workpiece 30, a jig 40 adapted to the inner surface of the workpiece 30 is attached, and is gripped by the robot 20, as shown in FIG. 2B in the media tank 10 A for rough polishing shown in FIG. Deburring is performed by a polishing operation in which the edge 36 is brought into contact with the medium M.
Further, if necessary, hairline processing is performed on a specific processing surface 37 (FIG. 7) by the reciprocating motion described in FIG. 3 or 4 in the media tank 10B for finish polishing shown in FIG. Apply.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the gist of the present invention.
For example, although the workpiece shown in FIG. 6 has a U-shaped cross section as a whole, the present invention can also be applied to a workpiece partially having a U-shaped portion.

  M: media, 10: media tank, 10A: media tank for rough polishing, 10B: media tank for final polishing, 20: robot, 30: work, 32: polishing section, 33: bottom plate, 34: side plate, 35: U-shaped part, 40: jig, 41: reduction block part.

Claims (7)

A medium tank (10) in which the medium (M) is put and the upper part is opened;
A robot (20) for grasping a work (30) to be polished, moving the work (30) in the media tank (10), and contacting the medium (M) to polish the work (30);
A workpiece polishing apparatus comprising: In claim 1,
The workpiece polishing apparatus further comprising a jig (40) attached to the non-polishing portion (31) of the workpiece (30) and held by the robot (20). In claim 2,
The work (30) is a work (30) having a bottom plate (33) and a side plate (34) rising integrally from the bottom plate (33) and having a U-shaped portion (35) having a U-shaped cross section,
The workpiece polishing apparatus characterized in that the jig (40) has a reduction block portion (41) that enters the U-shaped portion (35) of the workpiece (30) and reduces the internal volume of the U-shaped portion (35). . In any one of Claims 1-3,
The media tank (10) has a media tank (10A) for rough polishing and a media tank (10B) for finish polishing,
The said robot (20) is arrange | positioned between the media tank (10A) for rough grinding | polishing, and the media tank (10B) for final grinding | polishing, The workpiece | work grinding | polishing apparatus characterized by the above-mentioned.   A work polishing method using the work polishing apparatus according to claim 1. In claim 5,
A method for polishing a workpiece, wherein the workpiece (30) is reciprocated in a linear direction to perform hairline processing on the surface of the workpiece (30). A workpiece polishing method using the workpiece polishing apparatus according to claim 3 or 4,
After polishing the workpiece (30), the workpiece (30) is tilted to cause the medium (M1) in the workpiece (30) to flow out.

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