JPS5944180B2 - Barrel processing equipment - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to a barrel machining device equipped with a vertical barrel tank having a side wall portion and a rotating bottom portion, and particularly relates to a barrel machining device that processes a polished workpiece in the media in the barrel tank. This invention relates to a barrel processing device that can be easily taken out.

One type of conventional barrel processing apparatus is a so-called fluidized barrel processing apparatus.

This fluidized barrel processing device is equipped with a rigid barrel tank having a cylindrical side wall part and a rotating bottom part, and by driving the rotating bottom part one rotation, the media housed in the rebarrel tank is made to flow. It is now possible to polish the workpieces mixed in the media. Although such a barrel machining device has a high polishing efficiency, it has various inconveniences related to taking out workpieces mixed in the media.

That is, media and workpieces are discharged into a bucket through a discharge port provided on the side wall of the barrel tank, and the bucket transports the media and workpieces to a sorting sieve provided on the barrel tank. However, such barrel processing equipment requires a bucket and its elevating mechanism, making it large and expensive, and the workpiece sorting process takes a long time, making the equipment difficult to operate. This method has disadvantages in that the throughput is reduced and the surface of the workpiece may be scratched by falling of the media and workpiece during ejection.

On the other hand, a type of barrel processing device is provided in which the media and workpieces in the barrel tank are ejected by overturning the barrel tank that is rotatably supported around a horizontal axis. The equipment is large and expensive because it requires a rotation mechanism for the barrel tank, and the barrel tank must be rotated slowly and over a long period of time to avoid media scattering and scratches on the workpiece surface. Moreover, as the barrel tank rotates, the compound solution is discharged, resulting in a deterioration of the working environment and the loss of the compound solution that can be used multiple times.

These drawbacks are due to the fact that a large amount of media is also taken out from the barrel tank in order to separate the work from the media, whereas the original requirement is to take out only the work from the media. Therefore, in the conventional barrel processing apparatus, automatic handling of the workpiece, which is desired in the production process, is extremely difficult.

Purpose of the Invention The present invention has been made against the background of the above circumstances,
The aim is to create a small and inexpensive barrel processing device that can efficiently and uniformly polish annular workpieces and quickly remove the polished workpieces from the media in the barrel tank without damaging the surface. Our goal is to provide the following.

, Constitution of the First Invention In order to achieve the above object, the barrel processing device of the present invention includes (1) a rigid barrel tank having a side wall portion and a rotating bottom portion, and the media housed in the barrel tank is It is a barrel processing device that polishes annular workpieces mixed in the media by rotationally driving the rotary bottom part, and polishes annular workpieces mixed in the media, which includes: (2) a substantially straight bottom part and an upward direction from both ends of the bottom part; (3) a U-shaped workpiece latching member having an extending vertical portion and movably latching the inserted workpiece to the bottom portion; (3) holding at least one end of the workpiece latching member; The present invention is characterized in that it includes a holding means for positioning the bottom of the latching member in the media along the rotating bottom and substantially along the flow direction of the media.

Effect of the first invention With this structure, the annular workpiece is movably hung on the bottom of the workpiece hooking member positioned along the flow direction of the media. Flowing media is applied to the entire circumference of the workpiece without being hindered by the flow of the workpiece, and the posture of the annular workpiece during barrel polishing is freely changed according to the complicated flow of the barrel, so that its surface is uniformly polished. Since the bottom of the workpiece retaining member is positioned along the rotating bottom that causes the media to flow strongly, efficient polishing is performed.

Therefore, even if the annular workpiece is hung on the workpiece retaining member, the annular workpiece can be polished uniformly and efficiently, which is a feature of a fluidized barrel. Since the position of the polished workpiece inside is specified, the workpiece hooked to the workpiece hooking member can be easily taken out by hand or by an automatic takeout device.

Therefore, there is no need to use a barrel rotating mechanism, a packet elevating mechanism, a workpiece sorting device, etc. for discharging the media and sorting the workpieces from the media as in the past, making the barrel processing device much smaller and more compact. This makes it cheaper. In addition, the risk of scratches on the surface of the workpiece is eliminated, the time required for the workpiece removal process is significantly shortened, and the throughput of the barrel processing equipment is improved. The compound solution does not scatter, a good working environment can be maintained, and there is no loss of the compound solution. Configuration of the Second Invention Also, according to another aspect of the device of the present invention, (1) a rigid barrel tank having a side wall portion and a rotating bottom portion is provided, and the media housed in the barrel tank is transported through the rotating bottom portion; A barrel processing device that polishes annular workpieces mixed in the medium by rotating and driving the medium, and includes (2) a substantially linear bottom and vertical portions each extending upward from both ends of the bottom; (3) a U-shaped work hanging member that penetrates the work and movably hangs the work on the bottom; (3) a U-shaped work hanging member that holds one end of the work hanging member; (4) holding means for positioning the bottom of the stopping member in the medium along the rotating bottom and substantially along the flow direction of the medium; a workpiece take-out device that includes an attraction part that magnetically attracts the workpiece to be stopped and a vertical seven drive device that drives the attraction part in the vertical direction, and extracts the workpiece upward from an open end of the workpiece hanging member; It is characterized by including.

Effect of the second invention In this way, in addition to obtaining the same effect as the first invention, the workpiece can be sucked and taken out from the media by the workpiece take-out device without the operator's hands. There are advantages.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings.

In FIG. 1, reference numeral 2 denotes a cylindrical side wall section provided in a fixed position, and a disc-shaped rotating bottom section 4 is disposed so as to close the lower opening of this side wall section 2. A rigid barrel tank 6 is formed.

A rotating shaft 8 is protruded from the center of the rotating bottom 4, and the shaft end of the rotating shaft 8 is supported by a bearing 10, and a pulley 12 fixed to the rotating shaft 8 and a DC motor 14 are connected to each other. Pulley 18 fixed to the output shaft and V-belt 2
0 is multiplied and the rotating bottom 4 causes the DC motor 14 to rotate 4.
It is becoming driven. A pair of U-shaped workpiece retaining members 28 are provided in the barrel tank 6 to hold the annular workpiece 22 so as to be positioned within the flowing medium 26 forming the flow ring 24 .

The workpiece hanging member 28 is made of a bar member having a substantially linear bottom portion 30 and vertical portions 32 and 36 extending from both ends of the bottom portion 30. The bottom part 30 is approximately parallel to the upper surface of the rotating bottom part 4, and the tip of the vertical part 32 on the outer peripheral side is fixed to a lid 34 attached to the upper end surface of the barrel tank 6, and the other vertical part 36 passes through a hole 35 formed in the lid 34 and projects upward. As shown in FIG. 2, the workpiece hanging members 28 are arranged symmetrically in the vicinity of the side wall portions 2 on a straight line passing through the center of the barrel tank 6, with the fixed ends of the vertical portions 32 passing through the center of the barrel tank 6. By being arranged along the flow line M1 direction of the flowing media 26 along the rotating bottom portion 4, it forms an angle of θ with respect to a line passing through the center of the barrel tank 6.
That is, the workpiece 22 held by the workpiece holding member 28 is attached to the side wall portion 2 of the barrel tank 6 where the barrel polishing action is significant.
The fluid motion of the media 26 is effectively used to move the media 26 nearby. The workpiece hanging member 28 is coated with a highly wear-resistant synthetic resin coating 38 to protect it from wear caused by the media 26.
In particular, by thickening the synthetic resin coating 38 on the vertical portion 32, the workpiece 22 can be placed between the vertical portion 32 and the bottom portion 30.
A stopper 40 is formed. For this reason, Media 2
The workpiece 22 is inserted into the workpiece latching member 28 and latched in a freely movable manner near the boundary between the side wall portion 2 and the rotating bottom portion 4 where the flow of the workpiece 6 is most intense and the barrel polishing action is significant.
is prevented from passing through the vertical portion 32.\, allowing effective barrel polishing to occur in that position. The outer diameter of the bottom portion 30 of the workpiece hanging member 28 is the workpiece 2
Because the inner diameter of workpiece 2 is much smaller than that of workpiece 2.
2 can be easily moved along the bottom part 30 according to the flow direction of the media 26, and at the position where it contacts the stopper 40, it can be swung according to changes in the flow direction of the media 26. It is becoming possible to do so. On the other hand, a workpiece take-out device 42 is provided above the vertical portion 36 protruding from the lid 34.

That is, a vertical cylinder 46 attached to a fixed support member 44 is disposed above the open end of the vertical portion 36, and the tip of a tubular member 48 fixed to a piston rod of this vertical cylinder 46 is suctioned. A ring-shaped electromagnet 50 as a part is attached. Therefore, when the piston rod of the upper and lower cylinders 46 is pushed out, the tubular member 48 is fitted into the vertical portion 36, and the electromagnet 50 is guided by the vertical portion 36 and reaches the lower end 52 of the vertical portion 36, and the electromagnet 50 reaches the bottom end 52 of the vertical portion 36. The work piece 22 hooked to the end of the piece 30 is attracted to the work piece 22 . Then, when the piston rod is pulled into the upper and lower cylinders 46, the workpiece 2
2 can be pulled out of the vertical part 36 and removed from the barrel tank 6. Note that, although not shown, a workpiece retrieval device 42 similar to the above is also provided above the vertical portion 36 of the other workpiece hanging member 28. Hereinafter, the current behavior of this embodiment will be explained.

In accordance with a command from a control device (not shown), first the DC motor 1 is
4 is activated, the media 26 housed in the barrel tank 6 together with the compound solution is moved to N1 in FIG.
It flows as the bottom part 4 rotates in the direction.

At the same time, the workpiece 22 is inserted into the vertical section 36 by hand or other feeding device. Media 2 in this state
6 as a whole forms a flow ring 24 as a result of the media 26 near the rotating bottom 4 being forced to flow strongly in the rotational direction and the outer circumferential direction according to the rotational force and centrifugal force of the rotating bottom 4. That is, within the flow ring 24, the media 26 is directed in the direction of rotation of the rotating bottom portion 4, and as shown by the arrow A in the figure.
It is caused to flow in a spiral motion that twists in one direction. The workpiece 22 that is hung on the bottom part 30 at the lower end of the vertical part 36 is arranged so that the bottom part 30 is arranged substantially along the streamline direction of the flowing medium 26, and that the workpiece 22 is hung on the bottom part 30 in a freely movable manner. Since it is stopped, Media 2
6 and is guided to the bottom part 30 and moved to near the lower end of the vertical part 32.

At the lower end of the vertical portion 32, a stopper 40 made of synthetic resin is formed larger than the hole diameter of the workpiece 22.
2 is held in that position. Here, even if the annular workpiece 22 is hung on the U-shaped workpiece hooking member 28, the uniform and efficient polishing process that is characteristic of the flow barrel is performed.

That is, the bottom portion 30 of the workpiece hooking member 28 is positioned along the flow direction of the media 26, and the bottom portion 30
Since the workpiece 22 is freely movably latched to the workpiece 22, the medium that flows around the entire circumference of the workpiece 22 without being obstructed by the workpiece latching member 28 is applied to the workpiece 22, and the posture of the workpiece 22 is adjusted to the complicated flow of the barrel. Therefore, it is relatively freely changed (swinged) and its surface is uniformly polished, while the bottom 30 of the workpiece retaining member 28 is rotated by the media 26.
The polishing process is performed on the workpiece 22 efficiently because it is positioned along and in the vicinity of the rotary bottom part 4 which causes a strong flow of water. After performing barrel processing in this way, when carrying out the workpiece 22, the DC motor 14 is rotated in the opposite direction, and the rotating bottom portion 4 is rotated 1 in the N2 direction in FIG.
When driven, the media 26 flows in the direction of rotation of its rotating base 4 following a similar spiral movement. As a result,
Since the bottom part 30 is arranged at an angle that also includes the flow direction component of the medium 26, the workpiece 22 near the stopper 40 is guided to the bottom part 30 in the opposite direction to the N1 direction and is directed toward the vertical part 36. It is moved to the lower end 52. Thereafter, the rotating bottom portion 4 is driven once in the N3 direction, which is the same direction as N2 in FIG. 1, to further increase the rotational speed.

For this reason, the inner diameter of the flow ring 24 of the media 26 is expanded by the larger centrifugal force exerted by the rotating bottom portion 4, so that the workpiece 22, which is hung on the end of the bottom portion 30 on the side of the vertical portion 36, is moved inside the flow ring 24. exposed and then the upper and lower cylinders 46
According to the operation, the electromagnet 50 is lowered. As a result, the electromagnet 50 can more easily reach the workpiece 22 without being substantially blocked by the media 26, and attract the workpiece 22. Incidentally, the radius of the flow ring 24 varies depending on the type of media used, but under general barrel conditions, it is approximately 1/3 of the radius of the inner wall of the barrel tank. After that, when the electromagnet 50 is pulled up by the upper and lower cylinders 46, the workpiece 22 attracted to the electromagnet 50 is removed. It is extracted from the straight part 36 and taken out from the barrel tank 6. Then electromagnet 5
When the magnetic force of 0 is released, the workpiece 22 is placed in a predetermined position manually or by a conveyance device. This completes one barrel machining cycle. Thereafter, such a barrel machining cycle is repeated. As described above, according to this embodiment, the media 26 can be removed without using a work sorting device such as a barrel tank rotation mechanism, bucket lifting mechanism, or sieve for discharging the media and sorting the workpieces from the media.
Since it is possible to take out the workpiece 22 from inside, the barrel processing device becomes significantly smaller and cheaper. Further, since only the workpiece 22 can be quickly taken out from the media 26 in the barrel tank 6, the surface of the workpiece 22 is prevented from being scratched, and the time required for the process of taking out the workpiece 22 is significantly shortened. This improves the throughput of the barrel processing device, and since the compound solution is not discharged to the outside of the barrel tank 6 along with the media 26, the compound solution is not scattered, a good working environment can be maintained, and the compound solution is not lost. do not have. Furthermore, since the position of the polished work 22 is specified, the work 2 is automatically
2 can be taken out, and the labor of the operator can be saved. Furthermore, by automatically unloading the workpiece 22, it is of great significance that it can be directly connected to other processes or assembly lines. Furthermore, since the workpiece 22 can be held at a position where barrel processing efficiency is highest during barrel processing, it has become possible to significantly improve barrel processing efficiency. Next, another embodiment of the present invention will be described.

Incidentally, in the following embodiments, parts common to those in the above-mentioned embodiments are given the same reference numerals, and explanations thereof will be omitted. In FIGS. 3 and 4, the upper plate 56 is a disc-shaped member, and is rotatably attached to a fixed bracket 58 by a shaft protruding from the center thereof.

The axis of the protruding shaft of the upper plate 56 is aligned with the barrel tank 6.
It is arranged so that it is on the axis of the central axis of. A motor 60 with a brake is attached to one end of the fixed bracket 58, and a pinion 6 is attached to the output shaft of this motor 60.
2 is fixed. On the other hand, a tooth profile 64 that meshes with a pinion 62 is formed on the outer periphery of the upper plate 56 so that it can be rotated by a motor 60. The upper plate 56 includes the upper plate 5
The outer peripheral side of the workpiece retaining member 28 is fixed at a position equidistant from the rotation center of the upper plate 56 on two mutually orthogonal straight lines passing through the rotation center of the upper plate 56 . Incidentally, the attachment method and the relationship between the attachment positions of each pair of workpiece latching members 28 on the same straight line are the same as in the previous embodiment. Four round holes 66 are provided in the upper plate 56 on an extension of the center line of each vertical portion 36, and the open ends of the vertical portions 36 protrude upward through the round holes 66. . The upper plate 56 is rotated at a low speed by the motor 60 with a brake, and a detection device (not shown) operates at a predetermined rotational position, and at the same time the motor 60 with a brake is stopped, the rotation of the upper plate 56 is stopped, and the upper plate 56 is rotated at a low speed. The plate 56 will now be positioned. In other words, the workpiece take-out device 42 is disposed on the fixed bracket 58, and the upper plate 56 is sequentially positioned so that the center of the electromagnet 50 serving as the suction part is located above the vertical part 36. It's getting old. After the above-mentioned positioning is performed, each of the four vertical parts is held so as not to rotate by the brake of the brake-equipped motor 60 until the next positioning is performed. After the workpieces 22 are inserted from the open end of the barrel 36, the rotating bottom portion 4 is rotated by a control device (not shown) to barrel-process the four workpieces 22 at the same time.

After the barrel machining is completed, the upper plate 56 is rotated 1/4 turn at a time for positioning, and the workpieces 22 are sequentially taken out. Thereafter, after four workpieces 22 are inserted, barrel processing is performed again. The method for latching and taking out the workpiece 22 is the same as in the previous embodiment. In the barrel machining apparatus of this embodiment configured as described above, the workpiece 22 is polished in approximately half the cycle compared to the previous embodiment. This is because, while in the above-mentioned embodiment, two workpieces are processed in one cycle, in this embodiment, four workpieces can be simultaneously polished in approximately the same time as in the above-mentioned embodiment. Furthermore, the workpiece hanging member 2 is attached to the rotatable upper plate 56.
8 is fixed and a total of four workpiece latching members 28 can be indexed when inserting and taking out the workpiece 22, so that only one workpiece takeout device 42 is required. Next, in FIGS. 5 and 6, the swing arm 70
is a rectangular member, and a shaft 72 protrudes from the middle part of the member.
is rotatably attached to a lid 74 fixed to the upper end surface of the barrel tank 6.

The axis of this shaft 72 is arranged so as to be on the axis of the central axis of the barrel tank 6. On the other hand, at one end of the lid 74,
A cylinder 78 is arranged via a spacer 76,
A pin 80 attached to the tip of the piston rod of the cylinder 78 is engaged with an elongated hole 82 formed at one end of the swing arm 70, and as the piston rod moves forward and backward, the swing arm 70 moves. While being able to swing in the horizontal direction, a pair of U-shaped work hanging members 84 are provided inside the barrel tank 6 .

This workpiece hanging member 84 has vertical parts 88 and 90 extending upward from both ends of the bottom part 86, one end of the vertical part 88 is rotatably supported by the lid 74, and the vertical part 88 is rotatably supported by the lid 74.
It is located symmetrically with respect to the center of and near the side wall portion 2. The open end of the other vertical portion 90 is slightly lower than the lower surface of the lid 74. An L-shaped rotary ring 92 is branched at the middle of the vertical portion 88, and the open end of the rotary ring 92 extends upward through an arcuate hole 94 formed in the lid 74, and further swings. It is engaged with a pair of elongated holes 96 formed in the arm 70. Since the elongated holes 96 are formed at symmetrical positions with respect to the swing center of the swing arm 70, the pair of vertical portions 90 are located symmetrically with respect to the swing center of the swing arm 70. . That is, as shown in FIG. 5, the angle formed by the straight line connecting the vertical parts 88 and 90, that is, the center line of the bottom part 86, with respect to the straight line 98 connecting the pair of vertical parts 88, Another bottom 8 with respect to the straight line 98
The angle formed by the center line of 6 is equal. Therefore, when the swinging arm 70 is swung by the protrusion and retraction of the piston rod of the cylinder 78, the pair of vertical parts 90 are rotated at equal angles in opposite directions about the shaft 72. become. The angle θ1 between the axis of the bottom portion 86 and the straight line 98 is:
As shown in FIG. 7, the bottom 86 is the streamline M2 of the media 26
It is set in the direction along the When the bottom portion 86 is rotated to another position, the angle θ2 is the same as θ1 or slightly larger to match the streamline. Four holes 100 are formed in the lid 74 above the positions where each vertical portion 90 stops when the workpiece retaining member 84 is rotated by a predetermined angle by the cylinder 78. And the fifth
In the figure, when the vertical portion 90 is directed toward the downstream side of the media 26, two sets of workpiece take-out devices (not shown) similar to the previous embodiment are disposed above the hole 100, and the lower end 102 of the vertical portion 90 A workpiece 22 located at a position can be picked up and taken out by an electromagnet.

Next, the operation of this embodiment will be explained. With the workpiece latching member 84 positioned at the position shown in FIG. 5, the workpiece 22 is inserted into the vertical portion 90 manually or by a workpiece feeding device, and positioned at the lower end 102.

, the workpiece 22 at the lower end of the vertical section 90 is pushed by the flowing medium 26 and reaches the stopper 104 where the flow is the strongest.
It reaches the vicinity, where efficient parel polishing is performed. The cylinder 78 then moves the bottom portion 86 as shown in FIGS.
When the workpiece 22 is rotated to the position θ2 in the figure, the workpiece 22 is moved to the lower end 102 of the vertical portion 90 by the action of the flow of the media 26, and different positions are barrel-polished in a different attitude from that in the tapered portion 104. Ru. According to the inventor's experiments, after the workpiece latching member 84 rotates, . The workpiece 22 reaches the lower end 104 position in a few seconds. After the cylinder 78 rotates and reciprocates the bottom part 86 a predetermined number of times, the rotating bottom part 4 is rotated at a high rotational speed N2 at the θ2 position shown in FIGS. 5 and 7.
The diameter of the flow ring 24 is increased to move the workpiece 22.
After making it easier to take out the workpiece 22, the workpiece 22 is taken out by the workpiece takeout device.

According to this embodiment, since the workpiece 22 fitted into the workpiece retaining member 84 is reciprocated on the bottom part 86, barrel polishing is performed evenly and at the same time, the workpiece 22 is
Since barrel polishing is performed at a location where the flow is intense (near the tapered portion 104), processing efficiency can be improved.

Furthermore, since the rotating bottom part 4 can rotate in the same direction, the time loss associated with starting and braking times during normal rotation and reverse rotation is eliminated.
The efficiency of barrel processing equipment is improved. The above-mentioned embodiment is merely one embodiment of the present invention, and various modifications may be made to the present invention without departing from the spirit thereof.

For example, in the embodiment described above, the polished workpiece 2
In order to take out the workpiece 22, a workpiece take-out device 42 is provided, but if such a device is not provided, the worker can directly take out the workpiece 22 that has reached the end of the bottom portions 30, 86 by hand. It is possible to take it out.

In the workpiece take-out device 42, the electromagnet 50 is connected to the tubular member 4.
Although it is fixed to the lower end of the workpiece 8, it may be provided so as to be swingable so that the workpiece 22 can be more easily attracted.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a horizontal sectional view showing a main part of the embodiment shown in FIG. FIGS. 3 and 4 are a plan view and a partially cutaway front view showing essential parts of another embodiment of the present invention. FIGS. 5 and 6 are a plan view and a front sectional view showing essential parts of another embodiment of the present invention. FIG. 7 is an explanatory diagram showing the flow state of the media in the embodiments of FIGS. 5 and 6. FIG. 2: Side wall part, 4: Rotating bottom part, 6: Barrel tank, 24: Flow ring, 28
, 84: Work hanging member, 30, 86: Bottom, 32, 3
6, 88, 90: Vertical part, 38: Covering, 42: Workpiece take-out device.

Claims (1)

[Claims] 1. A rigid barrel tank having a side wall and a rotating bottom,
A barrel processing device for polishing an annular workpiece mixed in the media by rotating the media stored in the barrel tank by rotating the rotating bottom part, the barrel processing device having a substantially linear bottom part and a rotating bottom part. a U-shaped work hanging member that penetrating the workpiece and movably hanging the workpiece on the bottom portion, the workpiece hanging member having vertical portions each extending upward from both ends of the bottom portion; and at least the workpiece hanging member. A barrel processing device comprising: holding means for holding one end of the workpiece hanging member and positioning the bottom part of the workpiece hanging member in the medium along the rotating bottom part and substantially along the flow direction of the medium. . 2. The barrel processing apparatus according to claim 1, wherein the workpiece hooking member is coated with a synthetic resin having high wear resistance. 3 The holding means holds the workpiece retaining member in the barrel tank so as to be rotatable around the axis of one vertical portion thereof, and holds the workpiece retainer so that the other vertical portion thereof is upstream of the media. The barrel processing device according to claim 1, wherein the barrel processing device is positioned at a rotating position toward which the media is directed and a rotating position where the media is downstream. 4. A rigid barrel tank having a side wall and a rotating bottom,
A barrel processing device for polishing an annular workpiece mixed in the media by rotating the media stored in the barrel tank by rotating the rotating bottom part, the barrel processing device having a substantially linear bottom part and a rotating bottom part. a U-shaped work hanging member that penetrating the workpiece and movably locking the workpiece on the bottom portion, the workpiece hanging member having vertical portions each extending upward from both ends of the bottom portion; and one end of the workpiece hanging member. a holding means for holding the workpiece retaining member and positioning the bottom of the workpiece retaining member in the media along the rotating bottom portion and approximately along the flow direction of the media; A workpiece retrieval device that includes a suction part that magnetically attracts the workpiece that is hung on the bottom and a vertical drive device that drives the suction part in the vertical direction, and that extracts the workpiece upward from the open end of the workpiece hanging member. A barrel processing device comprising: 5. The holding means is a disc-shaped member rotatably provided around the center line of the barrel tank, and one end of the plurality of work hanging members on one circumference centered on the center line. is fixed, and the disk-shaped member is rotationally driven so that the other end of each of the workpiece hanging members is positioned at a position below the suction of the workpiece take-out device. The barrel processing device according to scope 4.