JP3343701B2 - Dry barrel polishing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry barrel polishing apparatus,
More specifically, the present invention relates to a dry barrel polishing apparatus provided with a dust collecting mechanism for collecting dust generated by a toroidally flowing mass inside a polishing tank.

[0002]

2. Description of the Related Art Conventionally, a dry barrel polishing apparatus having a dust collecting mechanism is configured as shown in FIG. In FIG.
Reference numeral 1 denotes a polishing tank. The polishing tank 1 includes a fixed tank 4 and a rotating disk 5. The turntable 5 rotates while slidingly contacting the fixed tank 4, and rotates the mass 2 (a workpiece such as a machined product, a pressed product, a sintered product, a die-cast product or a heat-treated product, and a medium such as a resin containing an abrasive) in the polishing tank 1. And toroidal flow, and deburring, scaling,
Perform round finish, smooth finish, gloss finish, etc. A space 9 is formed below a sliding contact portion gap 8 formed by a sliding contact portion between the rotating disk 5 and the fixed tank 4, and the space 9 is formed by dust collection formed in a lower portion 4 b of the fixed tank 4. It communicates with mouth 3.
One end of a pipe 11 is connected to the dust collection port 3, and the other end of the pipe 11 is connected to a dust collector 30. During the toroidal flow of the mass 2, dust generated by violently rubbing the work and the medium causes the gap 8 in the sliding contact portion, the space 9,
The dust is collected by the dust collector 30 through the dust collection port 31 and the pipe 11 in order.

[0003]

However, according to the conventional dry barrel polishing apparatus, the temperature of the mass 2 rises,
The softening of the media causes clogging (decreased sharpness), discoloration of the work (adhesion of polishing powder to the work), and concentration of dust in the gap 8 of the sliding contact portion, and a rise in the temperature of the mass 2 causes the sliding contact portion to weld. There is a disadvantage that polishing is impossible and wear damage occurs.

Further, according to the conventional dry-type barrel polishing apparatus, part of the dust is removed by the toroidal flow of the mass 2.
, But it is not possible to directly collect light dust floating around this mass 2,
There was also a problem that the dust collection efficiency was low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to suppress a rise in mass temperature, prevent welding of a sliding contact portion, and improve dust collection efficiency.

[0006]

DISCLOSURE OF THE INVENTION Dry barrel polishing of the present invention
The apparatus includes a polishing tank including a fixed tank and a rotating disk, and a lid that opens and closes an opening of the polishing tank, and a dust collector that collects dust generated by a toroidally flowing mass inside the polishing tank. In a dry barrel polishing apparatus having a structure ,
From the rotating disk gap formed between the rotating disk and the auxiliary suction disk
It is characterized in that dust inside the mass is sucked .

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

According to the dry barrel polishing apparatus according to the present invention , the rotary disk formed between the rotary disk and the auxiliary suction disk.
Dust inside the mass is sucked through the gap
The dust generated inside the mass during toroidal flow
Heavy dust can be collected.

[0016]

[0017]

【Example】

(1) First Embodiment (FIG. 1) FIG. 1 is a sectional view of a dry barrel polishing apparatus according to a first embodiment.

In FIG. 1, 1 is a polishing tank, 2 is a mass toroidally flowing inside the polishing tank 1, and 3 is a lid for opening and closing the opening 1a of the polishing tank 1 by a hinge 3a. .

The polishing tank 1 comprises a fixed tank 4 and a rotary disk 5. The fixed tank 4 is lined with an urethane resin 4a on the inner peripheral surface. The rotating disk 5 is rotated by a motor 6 and a reduction gear 7 while being in sliding contact with the fixed tank 4, and a part of the upper surface is lined with a urethane resin 5a. Below the sliding contact gap 8 formed at the sliding contact between the turntable 5 and the fixed tank 4,
A space 9 formed by the lower part of the fixed tank 4 and the rotating disk 5 is formed continuously, and this space 9 is not shown via a pipe 11 connected to a gas inlet 10 of the lower part 4b of the fixed tank 4. It is in communication with a compressed gas generator (for example, an air compressor). The compressed gas generated by the compressed gas generation device is discharged into the polishing tank 1 through the pipe 11, the gas inlet 10, the space 9, and the sliding portion gap 8 in this order. Polishing tank 1
The compressed gas discharged into the inside of the mass 2 converts the light dust 12 out of the dust generated inside the mass 2 during the toroidal flow into the mass 2.
Blow around. The compressed gas generator, the pipe 11, the gas inlet 10, the space 9, and the sliding contact gap 8 correspond to the compressed gas discharging means according to the present invention.

The lid 3 has a dust collection port 13 formed therein.
The dust collection port 13 is located above the shaft 5 b of the turntable 5. One end of a first flexible pipe 14 is connected to the dust collection port 13, and a first dust collector (not shown) is connected to the other end of the first flexible pipe 14. The light dust 12 blown around the mass 2 by the compressed gas as described above is collected by the dust collection port 13 and the first flexible pipe 14.
Are sequentially collected by the first dust collector. In addition, the dust collection port 13, the first flexible pipe 14, and the first dust collector correspond to a first dust collection unit according to the present invention.

A flat ring-shaped net 15 is provided on the upper surface of the turntable 5. The net 15 is configured by assembling wires in a grid shape by spot welding or the like. The net 15 is fixedly arranged on the upper surface of the rotary disk 5 by being pressed by the auxiliary suction disk 16. The net 15 is a thin or small workpiece between the upper surface of the rotary disk 5 and the lower surface of the auxiliary suction disk 16. To prevent digging. The portion where the net 15 is located corresponds to the turntable gap 17 according to the present invention, and the turntable gap 17 corresponds to the mass 2 during the toroidal flow.
Is formed at a position that is open to. Auxiliary suction board 16
Is fixed to the turntable 5 by fixing means 18, and a space 19 communicating with the turntable gap 17 is formed between the lower surface of the auxiliary suction plate 16 and the upper surface of the turntable 5. Further, a dust collection passage 20 is formed in the auxiliary suction plate 16. The dust collection passage 20 is formed at a position above the shaft portion 5b of the turntable 5 so as to extend upward. Auxiliary suction board 16
One end of a second flexible pipe 22 is connected to an upper end of the second flexible pipe 22 via a rotary joint 21.
Reference numeral 2 communicates with the dust collection passage 20. The other end of the second flexible pipe 22 is connected to a joint pipe 23 disposed on the lid 3.
The other end of the joint pipe 23 is connected to a third flexible pipe 24. The other end of the third flexible pipe 24 is connected to a second dust collector (not shown). The heavy dust 25 among the dusts generated inside the mass 2 during the toroidal flow flows into the rotating disc gap 17 and the space 1.
9, the dust collecting passage 20, the rotary joint 21, the second flexible pipe 22, the joint pipe 23, and the third flexible pipe 24 are sequentially collected by the second dust collector. In addition, the rotating disk gap 17, the space 19, the dust collection passage 20, the rotary joint 21, the second flexible pipe 22, the joint pipe 23, the third flexible pipe 24, and the second dust collector are included in the present invention. Corresponding to the second dust collecting means.

According to the dry barrel polishing apparatus of this embodiment,
The compressed gas discharged into the polishing tank 1 cools the sliding contact portion and the mass 2, and the first and second dust collecting means are provided in the polishing tank 1.
The high-temperature gas in the polishing tank 1 is sucked out of the polishing tank 1 together with the dusts 12 and 25, and the high-temperature gas in the polishing tank 1 is discharged.
For this reason, the temperature rise of the mass 2 is suppressed, and clogging (decreasing sharpness) due to softening of the media and discoloration of the work (attachment of the abrasive powder to the work) can be prevented. In addition, since the sliding portion and the mass 2 are cooled as described above, and the compressed gas blows off dust near the sliding portion gap 8, it is possible to prevent polishing failure and wear damage due to welding of the sliding portion.

The light dust 12 among the dust inside the mass 2 is sowed around the mass 2 by the compressed gas, and the light dust 12 floating around the mass 2 is the first dust.
The dust collection means improves dust collection efficiency. Further, since the dust collection port 13 of the first dust collecting means is provided at a position above the shaft 5b of the turntable 5, the dust collection port 13 floats around the mass 2 forming a donut shape around the shaft 5b of the turntable 5. Light dust 12 can be collected efficiently.

(2) Second Embodiment (FIG. 2) FIG. 2 is a sectional view of a dry barrel polishing apparatus according to a second embodiment.

In FIG. 2, the compressed gas discharging means includes a compressed gas generator (not shown), as in the first embodiment.
The compressed gas generated by the compressed gas generator is composed of a pipe (not shown), a gas inlet 10, a space 9 and a sliding contact gap 8. 8 are sequentially discharged into the polishing tank 1 through the polishing tank 1.
The compressed gas discharged into the inside of the mass 2 converts the light dust 12 out of the dust generated inside the mass 2 during the toroidal flow into the mass 2.
Blow around.

A dust collection port 13 is formed in the upper part of the fixed tank 4. One end of a first flexible pipe (not shown) is connected to the dust collection port 13, and a first dust collector (not shown) is connected to the other end of the first flexible pipe.
The light dust 12 blown around the mass 2 by the compressed gas discharged into the polishing tank 1 forms a dust collection port 13,
Through the flexible pipe of the first order, and is collected by the first dust collector. Note that the dust collection port 13, the first flexible pipe and the first
Corresponds to the first dust collecting means according to the present invention.

A dust collecting passage 20 is formed in the rotary disk 5. The dust collection passage 20 is formed in the shaft portion 5b of the turntable 5 in a vertical direction. One end of a second flexible pipe (not shown) is connected to the lower end of the shaft portion 5b of the turntable 5 via a rotary joint 21. The second flexible pipe communicates with the dust collection passage 20. are doing. The other end of the second flexible pipe is connected to a second dust collector (not shown). The heavy dust 25 among the dusts generated inside the mass 2 during the toroidal flow flows into the turntable gap 17, the space 19, the dust collection passage 20,
The dust is collected by the second dust collector through the rotary joint 21 and the second flexible pipe in order. Note that the turntable gap 17, the space 19, the dust collection passage 20, the rotary joint 21, the second flexible pipe, and the second dust collector correspond to the second dust collection means according to the present invention.

Since the dry barrel polishing apparatus according to the present embodiment is configured as described above, the temperature rise of the mass 2 is suppressed, and clogging (decrease in sharpness) due to softening of the media, as in the first embodiment, Discoloration of the work (adhesion of the polishing powder to the work) can be prevented. Further, since the sliding contact portion and the mass 2 are cooled and the compressed gas blows off dust near the sliding contact portion gap 8, it is possible to prevent polishing failure and wear damage due to welding of the sliding contact portion. Further, the light dust 12 floating around the mass 2 is collected by the first dust collecting means, so that the dust collecting efficiency is improved. Also, the shaft portion 5b of the turntable 5
A vertical dust collecting passage 20 communicating with the turntable gap 17
Is formed, the heavy dust 25 sucked through the rotating disk gap 17 among the dust generated inside the mass 2 can use the motion of falling by its own weight in the dust collection passage 20, so that the suction force of the suction force is small. Even if a dust collector is used, sufficient dust collection efficiency can be obtained. Further, since the dust collecting port 13 is provided in the fixed tank 4, the opening and closing operation of the lid 3 becomes easy.

(3) Third Embodiment (FIG. 3) FIG. 3 shows a first dust collecting means and a second collecting means in a third embodiment whose basic configuration is similar to the first or second embodiment. 3 shows a fluid circuit of the dust means.

In FIG. 3, the first dust collector of the first dust collector and the second dust collector of the second dust collector are common, and the dust collector of the one dust collector and the dust collector of the first dust collector are common. A first valve 26 is provided between the dust collector and the opening 13, and a second valve 27 is provided between the dust collector and the rotating disk gap 17 of the second dust collecting means. Other configurations are the same as those of the first embodiment or the second embodiment.

According to the present embodiment, since one dust collector serves as both the dust collector of the first dust collector and the dust collector of the second dust collector, the number of dust collectors can be reduced, and the effects such as cost reduction can be obtained. Occurs.

By the way, the polishing time, the interval of the sliding contact gap 8 and the change of the temperature of the sliding contact portion when the dry barrel polishing device of each embodiment and the conventional dry barrel polishing device were continuously operated were measured. As a result, the result as shown in FIG. 4 was obtained. As is evident from the results, according to the dry barrel polishing apparatus of the present embodiment, the curve of decreasing the gap of the sliding contact portion gap 8 becomes gentle, and the rising curve of the temperature of the sliding contact portion also becomes gentle. found.

[Brief description of the drawings]

FIG. 1 is a sectional view of a dry barrel polishing apparatus according to a first embodiment.

FIG. 2 is a cross-sectional view of a dry barrel polishing apparatus according to a second embodiment.

FIG. 3 is a main part configuration diagram of a dry barrel polishing apparatus according to a third embodiment.

FIG. 4 is a graph showing changes in the gap of the sliding contact portion and the temperature of the sliding contact portion with respect to the polishing time.

FIG. 5 is a sectional view of a main part of a conventional dry barrel polishing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Polishing tank 2 Mass 3 Lid 4 Fixed tank 5 Rotating disk 8 Sliding contact gap 13 Dust collecting port 17 Rotating disk gap 20 Dust collection passage

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B24B 55/06 B24B 31/12

Claims (1)

(57) [Claims] 1. A polishing tank comprising a fixed tank and a rotating disk, and a lid for opening and closing an opening of the polishing tank, wherein dust generated by a toroidally flowing mass inside the polishing tank is collected. In the dry barrel polishing apparatus provided with a dust collecting mechanism, an auxiliary suction plate is provided above a central portion of the rotary disk, and the auxiliary suction disk is provided.
Formed between the lower surface of the pulling disk and the upper surface of the rotating disk,
Formed at a position that opens to the mass during toroidal flow
A dry barrel polishing apparatus, wherein dust inside the mass is sucked from the gap of the rotating plate.