JPH10225860A - Surface treatment method of work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate surface treatment as a post-process since a polishing degree is uniformized and a burr is not generated by performing the surface treatment after performing barrel polishing on a work before the surface treatment or after the surface treatment. SOLUTION: A guide cylinder 30 is rotatably fitted around a bottom part of a polishing medium housing tank 10, and an aluminium-made vehicular wheel W as a work is housed inside a trumpet cylinder 31 of the guide cylinder 30 in an almost closely contacting condition. When a polishing medium 20 is naturally dropped toward a surface of the vehicular wheel W from the polishing medium housing tank 10 in a condition where this vehicular wheel W is rotated while vibrating it, the polishing medium 20 continuously reaches a surface of the vehicular wheel W in an almost spaceless condition through the guide cylinder 30, and is discharged downward through hole parts 51 and 52 while performing barrel polishing on the surface of the vehicular wheel W. After this barrel polishing, surface treatments such as painting, plating and the transformation into alumite are performed on the surface of the vehicular wheel W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a surface of a work.

[0002]

2. Description of the Related Art Conventionally, there has been a technique of applying a coating after polishing a work.

[0003]

However, in such a conventional method, since the work is merely polished by hand, there is a disadvantage that unevenness is easily generated in the degree of polishing, resulting in unevenness in coating. I had. In addition, since it is necessary to remove burrs generated by polishing in order to apply an appropriate coating, there is a disadvantage that it is difficult to improve work efficiency.

An object of the present invention is to eliminate such inconvenience.

[0005]

Means for Solving the Problems In order to achieve the above object, in a method for treating a surface of a work according to the present invention,
Since the surface treatment is performed after barrel-polishing the work before or after the surface treatment, the degree of polishing is uniform and no burrs are generated. As a result, the surface treatment as a post-process is easy.

The barrel polishing includes a polishing medium storage tank for storing a polishing medium and a vibrating work. The polishing medium storage tank has an upper end opening and a medium supply port at the bottom thereof. By arranging the work below the mouth and performing a barrel polishing apparatus capable of continuously supplying the polishing medium of the polishing medium storage tank to the surface of the work while oscillating the work, in barrel polishing. Since the supply pressure to the workpiece gradually decreases as the polishing medium decreases from the polishing medium storage tank, the workpiece can be rough-ground and polished at the beginning when the supply pressure of a single polishing medium is strong. According to the gradual decrease of the supply pressure of the medium, the medium finishing polishing and the finishing polishing can be continuously performed in a series of steps.

In addition, the barrel polishing includes a polishing medium storage tank containing a polishing medium and a work support arm, the polishing medium storage tank has an upper end opening, and the support arm extends along a vertical plane. If the tip is made to be able to swing in a range within the polishing medium storage tank from almost right above by the barrel polishing apparatus, the work is placed and mounted with the support arm with the tip being right above. Since it can be removed, a large-mass work can be easily attached to and detached from the support arm.

Further, if the work supporting arm is made to be able to swing in the horizontal direction, the work can be easily arranged at an appropriate position in the polishing medium storage tank.

Further, if the work supporting arm can be moved back and forth along the axial direction, the work can be held at a low position when the work is detached, so that the work can be detached more easily. .

[0010] The surface treatment is, for example, painting, plating, anodizing, etc., and the work corresponds to, for example, a vehicle wheel.

[0011]

FIG. 1 shows a first embodiment of a barrel device according to the present invention.

In FIG. 1, reference numeral 10 denotes a polishing medium storage tank of the barrel polishing apparatus A. The polishing medium storage tank 10 stores polishing media (aggregates) 20, 20,.... In addition, as the polishing medium 20, any commonly used material such as ceramic particles can be used.

Reference numeral 11 denotes an upper end opening of the polishing medium storage tank 10,
The inside of the polishing medium storage tank 10 communicates with the atmosphere through the upper end opening 11.

Reference numeral 12 denotes a medium supply port, which is a polishing medium storage tank 10.
It is formed at the bottom. Through this medium supply port 12,
The polishing media 20, 20,... In the polishing media storage tank 10 fall naturally. The falling pressure at this time gradually decreases as the polishing media 20, 20,... Decrease from the polishing medium storage tank 10.

Reference numeral 30 denotes a guide cylinder, and the polishing medium storage tank
It is rotatably fitted to the bottom of 10. Reference numeral 31 denotes a trumpet cylinder, which is provided at a lower portion of the guide cylinder 30.
It forms part of 30. The function of the guide tube 30 will be described later.

W is an aluminum vehicle wheel (corresponding to the "work" of the present invention).
Are housed in a state where they are contacted with almost no gap inside. The vehicle wheel W is rotatable about an axis O while being vibrated. When the vehicle wheel W rotates, the guide cylinder 30 including the rubber cylinder 31 also integrally rotates and vibrates.

While the vehicle wheel W is being rotated while being vibrated, the polishing media 20, 20,.
Are naturally dropped toward the surface of the vehicle wheel W, the polishing media 20, 20,... Continuously reach the surface of the vehicle wheel W via the guide cylinder 30 without any gap. . Then, it is discharged downward through the holes 51 and 52 while barrel polishing the surface of the vehicle wheel W.

As described above, the polishing media 20, 20,.
Since the supply pressure to the vehicle wheel W gradually decreases as the supply pressure decreases from the polishing medium storage tank 10, even if a single polishing medium 20, 20,. The surface of the wheel W can be roughly polished and polished, and the surface of the vehicle wheel W can be continuously semi-finished and finished polished in accordance with the gradual decrease in the supply pressure of the polishing media 20, 20,.

After the discharged abrasive media 20, 20,... Are all discharged below the vehicle wheel W, in other words,
After the polishing medium storage tank 10 is emptied, by appropriate means,
It is returned to the polishing medium storage tank 10 again. Then, the rough grinding, the medium finish grinding, and the finish grinding of the vehicle wheel W are continuously performed again.

Further, the degree of polishing can be changed by applying pressurized air or water to the polishing medium storage tank 10 and applying pressure to the polishing media 20, 20,.

After the barrel polishing, a surface treatment such as painting, plating, anodizing, etc. is performed. These surface treatments include all that are normally present.

In the first embodiment, since the polishing medium falls naturally, a work having a hole easily penetrates into the hole, so that the hole can be more appropriately polished.

In the first embodiment, since the supply of the polishing medium to the work surface relies on natural fall, noise can be reduced and energy can be saved.

In the first embodiment, if a guide cylinder is arranged between the supply port of the polishing medium storage tank and the surface of the work, the supply of the polishing medium to the work can be efficiently performed.

In the first embodiment, if the guide cylinder is also vibrated integrally with the work, the supply of the polishing medium is performed more smoothly.

In the first embodiment, the degree of polishing of the workpiece can be changed if the polishing medium in the polishing medium storage tank can be pressurized by appropriate means.

FIG. 2 shows a second embodiment of the barrel polishing apparatus according to the present invention.

In FIG. 2, B is a barrel polishing apparatus, and 60 is a drive section of the apparatus B. Reference numeral 61 denotes a cylindrical polishing medium storage tank, which is mounted on the driving unit 60. The polishing medium storage tank 61 can be rotated in the circumferential direction about the axis by the driving unit 60. Reference numerals 62, 62,... Denote polishing media, which are stored in the polishing medium storage tank 61. As the polishing medium 62, any commonly used one such as ceramic particles can be used. The polishing method is wet polishing,
Any of dry polishing may be used.

Reference numeral 63 denotes an upper end opening of the polishing medium storage tank 10,
The work W is immersed in the polishing media 62 through the upper opening 11.

Next, reference numeral 70 denotes a base provided integrally with the drive unit 60, and reference numeral 71 denotes a support column erected on the base 70. The support column 71 extends to approximately the upper end of the polishing medium storage tank 61.

Reference numeral 80 denotes a mounting bracket,
It is installed to be able to swing. That is, the mounting bracket 80 can swing about the point O along the vertical plane. Reference numeral 90 denotes a support bed, which is installed on the mounting bracket 80 via a rotating means 81. Therefore, the support bed 90 can swing along the vertical plane together with the mounting bracket 80, and can swing or swing around the axis P via the rotating means 81.

Reference numeral 91 denotes a support, which is installed on the support bed 90 so as to be able to advance and retreat. Reference numeral 92 denotes a support arm, which is fitted to the support 91 so as to be able to advance and retreat.
Note that the direction of movement of the support arm 92 and the direction of movement of the support tool 91 are the same. W is a work (aluminum vehicle wheel) mounted on the tip of the support arm 92 via an air chuck 93,
62,62, ... immersed in it.

The operation of this device will be described.

First, as shown by an imaginary line (dashed line), the support arm 92 is set to a state where the tip thereof is directly above, and then is retracted downward. In this state, the vehicle wheel W is mounted on the tip of the support arm 92 via the air chuck 93 and fixed. Thereafter, the support arm 92 is extended upward as indicated by a virtual line (two-dot chain line). Then, as shown by the solid line, the support arm 92 is connected to the support tool 91,
By swinging along the vertical plane about the point O together with the support bed 90, the vehicle wheel W is immersed in the polishing media 62, 62,. Incidentally, in a state where the vehicle wheel W is immersed in the polishing media 62, 62,..., The support arm 92 can be rocked little by little. After the polishing, the support arm 92 is swung in the opposite direction along the vertical plane about the point O together with the support tool 91 and the support bed 90, and the support arm 92 is moved as indicated by a virtual line (two-dot chain line). The state is set so that the tip is right above, and then, it is retracted downward and set to the state shown by the virtual line (dashed line). In this state, the vehicle wheel W is removed from the tip of the support arm 92. Hereafter, it repeats.

If a soft material such as sponge, rubber, soft plastic, or the like is used as a polishing medium in the polishing apparatus B, the final polishing can be performed efficiently. In addition, a soft material may be coated on the surface of a hard particle or a hard lump to form a polishing medium of this type.

After the barrel polishing, surface treatments such as painting, plating, and anodizing are performed. These surface treatments include all that are normally present.

The work W used in the first and second embodiments may be a surface-treated workpiece or a bare workpiece.

[0038]

According to the method for surface treatment of a work according to the present invention, since the surface treatment is performed after barrel polishing the work before or after the surface treatment, the degree of polishing becomes uniform and burrs are generated. As a result, surface treatment is easily performed as a post-process.

Therefore, the use of this method can improve the efficiency of the surface treatment.

The barrel polishing includes a polishing-medium storage tank containing a polishing medium and a vibrating work. The polishing-medium storage tank has an upper end opening and a medium supply port at the bottom thereof. By arranging the work below the mouth and performing a barrel polishing apparatus capable of continuously supplying the polishing medium of the polishing medium storage tank to the surface of the work while oscillating the work, in barrel polishing. Since the supply pressure to the workpiece gradually decreases as the polishing medium decreases from the polishing medium storage tank, the workpiece can be rough-ground and polished at the beginning when the supply pressure of a single polishing medium is strong. According to the gradual decrease of the supply pressure of the medium, the medium finishing polishing and the finishing polishing can be continuously performed in a series of steps.

The barrel polishing includes a polishing medium storage tank containing a polishing medium and a work support arm, the polishing medium storage tank has an upper end opening, and the support arm extends along a vertical plane. If the tip is made to be able to swing in a range within the polishing medium storage tank from almost right above by the barrel polishing apparatus, the work is placed and mounted with the support arm with the tip being right above. Since it can be removed, a large-mass work can be easily attached to and detached from the support arm.

Further, if the work supporting arm can be swung in the horizontal direction, the work can be easily arranged at an appropriate position in the polishing medium storage tank.

Further, if the work supporting arm can be moved back and forth in the axial direction, the work can be held at a low position when the work is attached and detached, so that the work can be more easily attached and detached. .

The surface treatment is, for example, painting, plating, anodizing, and the like, and the work corresponds to, for example, a vehicle wheel.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of a barrel polishing apparatus used in the present invention.

FIG. 2 is a sectional view of a second embodiment of the barrel polishing apparatus used in the present invention.

[Explanation of symbols]

 10 ... polishing medium storage tank 11 ... upper end opening 12 ... medium supply port 20 ... polishing medium 30 ... guide cylinder 61 ... polishing medium storage tank 62 ... polishing medium 63 ... upper end opening 92 ... work support arm A ... barrel polishing apparatus B ... barrel Polishing device W… Vehicle wheel (work)

Claims (9)

[Claims] 1. A surface treatment method for a work, wherein the surface treatment is performed after barrel polishing the work before or after the surface treatment. 2. The barrel polishing includes a polishing medium storage tank that stores a polishing medium and a vibrable work, wherein the polishing medium storage tank has an upper end opening and a medium supply port at the bottom thereof. 2. The apparatus according to claim 1, wherein the work is disposed below a mouth, and the work is performed by a barrel polishing apparatus capable of continuously supplying a polishing medium in the polishing medium storage tank to a surface of the work while vibrating the work.
Surface treatment method of workpiece. 3. The barrel polishing includes a polishing medium storage tank containing a polishing medium and a work support arm, wherein the polishing medium storage tank has an upper end opening, and the support arm extends along a vertical plane. 2. The method according to claim 1, wherein the polishing is performed by a barrel polishing apparatus having a tip portion swingable in a range within the polishing medium storage tank from substantially right above. 4. The method according to claim 3, wherein the work supporting arm is swingable in a horizontal direction. 5. The work supporting arm is capable of moving back and forth along the axial direction.
Surface treatment method of workpiece. 6. The method according to claim 1, wherein said surface treatment is painting. 7. The method according to claim 1, wherein said surface treatment is plating. 8. The method according to claim 1, wherein said surface treatment is alumite.
Or the surface treatment method of the work according to claim 5. 9. The method according to claim 1, wherein the workpiece is a vehicle wheel. Workpiece surface treatment method.