JP2003071700A - Centrifugal barrel polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce burden on work for mounting/demounting barrel tanks. SOLUTION: This centrifugal barrel polishing device 1 having a plurality of barrel tanks 29 rotatably mounted at equal intervals on the circumference of a turret 13 revolving in a horizontal in a housing 2 comprises a rotatable barrel case 16 storing the barrel tanks 29, a barrel tank mounting stand 20 having one end axially mounted on the barrel case 16 and the other end engageable/disengageable with/from the barrel case 16, and fastening means 26, 31 for fixing the barrel tanks 29 to the barrel case 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal barrel polishing apparatus that revolves in a horizontal plane and has a barrel tank that can be easily attached and detached.

[0002]

2. Description of the Related Art Centrifugal barrel polishing apparatuses are classified into a type that revolves in a vertical plane and a type that revolves in a horizontal plane. In the former case, there are a wide range of specifications from small polishing equipment to large polishing equipment. However, this type of polishing apparatus has the following problems. That is, when this device is operated,
In the initial stage of operation, the work and the media put in the barrel tank are lifted upward against the gravity, and then they fall by gravity, which is a violent operation. After that, it shifts to a certain flow state. Immediately before the operation is stopped, the same violent operation is repeated from a certain flow state to stop. Therefore, if the workpiece is a brittle material such as ceramics, it may chip and crack. Therefore, in order to polish brittle materials with this type of polishing equipment, it was necessary to take care such as slowly changing the rotation speed at the beginning of operation and immediately before stopping.

On the other hand, in the case of the latter type, centrifugal force causes the workpiece and the medium to gently rise up the vertical barrel tank wall, and finally becomes a flow form along the barrel tank wall. Therefore, there is no problem of chipping or cracking of the workpiece because it does not perform a violent operation at the beginning of operation and immediately before stopping operation. Therefore, it is suitable for polishing brittle materials.

By the way, in this type of polishing apparatus, as disclosed in JP-A-7-52021, the barrel tank is charged from above by opening the lid plate on the upper part of the apparatus. When a large-capacity barrel tank is installed for large-scale processing or processing of large workpieces with this device, the drive unit is located below the barrel tank. The position is higher. Therefore, there is a problem that it becomes difficult for the worker to perform the work. Therefore, in this type of polishing apparatus, a barrel tank having a small capacity is required, and polishing of small electronic parts and small-scale production of workpieces have been the mainstream.

[0005]

In order to solve the above problems, it was considered to carry out from the side of the apparatus instead of charging a large barrel tank from the top, but the entire polishing apparatus is a safety measure. Since it is covered by the housing, it is necessary to open the door of the housing and mount it from there to a predetermined mounting position. In this case, when viewed from the outside of the housing, it is mounted in the internal recess, so that mounting with a heavy barrel tank forces the operator to take an uncomfortable posture, which imposes a heavy work burden. The present invention aims to solve these problems.

[0006]

That is, the first means for solving the problems of the present invention has a plurality of barrel tanks mounted at equal intervals on the circumference of a turret that revolves in a horizontal plane in a housing. In a centrifugal barrel polishing apparatus, a self-rotating barrel case that accommodates the barrel tank, a barrel tank mounting stand that has one end pivotally attached to the barrel case and the other end that can be detached from the barrel case, and the barrel. A centrifugal barrel polishing device comprising a tightening means for fixing a tank to the barrel case.

The second means for solving the problems of the present invention is the first means.
In the solution, the barrel tank mounting stand is a centrifugal barrel polishing apparatus in a posture facing the barrel tank loading port of the housing.

Further, a third problem solving means of the present invention is the first solving means, wherein the tightening means comprises a bolt screwed into the mounting stand and a recess formed in the barrel tank into which the bolt is fitted. It is a centrifugal barrel polishing device.

[0009]

When the barrel tank is mounted, the door of the housing is opened, the barrel case on the front and the mounting stand are unlocked, and the barrel is rotated outward around the shaft at one end of the mounting stand. Then, the mounting stand pops out to the outside of the housing, so the worker places the barrel tank on the mounting stand. After that, return the mounting stand to its original position and hang it on the barrel case. Finally, when the bolt mounted on the mounting stand is tightened, the tip of the bolt is fitted into the concave portion of the barrel tank, and the barrel tank is fixed in the barrel case. The above operation is performed according to the number of barrel tanks, and the polishing process is started.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to FIGS.

1 in FIG. 1 is a centrifugal barrel polishing apparatus of the present invention. Reference numeral 2 denotes a housing, which covers the entire polishing device that revolves around its own axis in terms of safety and design. 3 opens the door with a door and inserts a barrel tank. Reference numeral 4 is an operation panel.

2 and 3 show the inside of the housing 2. A motor 5 is installed in the lower part of the housing 2 and serves as a drive source for the apparatus. A pulley 6 is attached to the shaft of the motor 5, and a drive belt 7 is wound around a revolving pulley described later to rotate the revolving pulley.
A frame 8 (not shown) is provided in the housing 2 to support the device. For example, a revolution bearing 9 is provided on one frame 8a. The revolution bearing 9 rotatably supports the revolution shaft 10 in the longitudinal direction, and also supports an upper bearing 11 provided on the upper frame 8b.

At the lower end of the revolution shaft 10, a revolution pulley 1 is provided.
2 is attached, and two turrets 13 are attached above it. Rotation bearings 14 are provided on the circumference of each turret 13 at equal intervals. This rotation bearing 14
A rotating shaft 15 is rotatably supported by the rotating shaft 15, and a barrel case 16 is held between the rotating shafts 15 of the upper and lower turrets 13. In this example, four rotation shafts 15 are provided on each turret 13 at equal intervals, but the number can be changed as necessary, for example, three or less or five or more.

A rotating pulley 17 is attached to the lower end of the rotating shaft 15 of the lower turret 13. A fixed pulley 18 is attached between the revolution bearing 9 and the lower turret 13, and a rotation belt 19 is wound around the rotation pulley 17 and the fixed pulley 18. With this configuration, the revolution pulley-1 is driven by driving the motor 5.
2. The revolution turret 13 rotates, and the rotation shaft 15 rotates on a revolution orbit by a rotation belt 19 wound around a fixed pulley 18. That is, the rotation axis 15
And the barrel case 16 will revolve around its own axis.

4 to 7 show details of the mounted state of the barrel tank. The barrel case 16 is shaped to receive a hexagonal cross section of a barrel tank, which will be described later.
At one end thereof is rotatably attached around the upper and lower pins 21a. The mounting stand 20 is constructed by vertically arranging two U-shaped arms 22 arranged vertically and between the upper and lower U-shaped arms 22 such that the lower end thereof projects from the arms.
One reinforcing bar 23, a barrel tank mounting surface 24 attached to the lower ends of the two reinforcing bars 23, and the two reinforcing bars 23.
And a tightening plate 25 that is vertically installed between the upper and lower U-shaped arms 22 in the middle. A screw hole 25a is formed substantially in the center of the tightening plate 25, and a bolt 26 is screwed into the screw hole 25a. On the other hand, the other end of the mounting stand 20 is provided with a U-shaped hanging tool 27 rotatably around the pin 21b, and a hook 28 provided on the barrel case 16.
It is possible to take off.

Reference numeral 29 denotes a barrel tank, which is a polygonal prism having a hexagonal cross section. A urethane lining 29a is attached to the inner wall of the barrel tank 29 so that the work is not shocked even when the work hits the wall during polishing. The barrel tank 29 has a lid 30 attached to one end in the longitudinal direction by bolts or the like, and the lid 30 is also provided with a lining 30a. Further, a concave portion 31 is formed on one side surface of the barrel tank 29, and when the bolt 26 of the tightening plate 25 is screwed, the tip of the concave portion 31 is fitted into the concave portion 31 of the barrel tank 29 mounted on the mounting stand 20. 29 is fixed in the barrel case 16 (corresponding to the tightening means in claim 1 of the present invention).
32 is a handle for carrying.

Next, the operation will be described based on the above configuration. The turret 13 is rotated at a slight speed and stopped so that an arbitrary barrel case 16 comes to the front of the door 3. In this case, the mounting stand 20 side faces the front (corresponding to claim 2 of the present invention). This is obtained by setting the rotation ratio such that the rotation shaft 15 also makes one rotation every time the revolution shaft 10 makes one rotation. That is, in FIG. 3, when the turret 13 makes one rotation in the clockwise direction, the barrel tank 29 makes one rotation in the counterclockwise direction, so that the mounting stand 20 always revolves in a posture facing the front. Therefore, the barrel tank 29 can be easily and quickly mounted when the apparatus is stopped.

Next, the door 3 of the housing 2 is opened, and the hanging tool 2
7 from the hook 28 and the mounting stand 20 with the pin 21
It rotates around a (arrow D in FIG. 3). Mounting surface 2 of the stand 20 on which the barrel tank 29 containing the work and the media is loaded
Installed in 4. Here, since the mounting stand 20 is configured to project to the outside of the housing 2, the operator can mount the barrel tank 29 without taking an unreasonable posture. At this time, the barrel tank 29 is mounted so that the concave portion 31 faces the bolt 26 of the tightening plate 25. Next, the mounting stand 20 is returned to the original position, and the hooking / dismounting tool 27 is hooked on the hook 28. Then, when the bolt 26 of the tightening plate 25 is screwed, the tip of the bolt 26 is fitted into the recess 31 of the barrel tank 29, and the barrel tank 29 is firmly fixed by the bolt 26 and the barrel case 16. Next, the turret 13 is rotated at a slight speed so that the next barrel case 16 comes to the front of the door 3. Similarly, the barrel tank 29 is mounted. Since there are four barrel cases 16 in this example, the operation is repeated four times. When the above operation is completed, the door 3 is closed and the start button of the operation panel 4 on the front surface of the housing 2 is turned on to start barrel polishing.
After the completion of polishing, when the barrel tank 29 is taken out, the reverse operation to the above may be performed.

[0019]

As described above, according to the centrifugal barrel polishing apparatus of the present invention, even though it is a polishing apparatus that revolves in a horizontal plane, it is easy to mount a large barrel tank, so the work burden is great. The effect is reduced, and mounting is easy and quick.

[Brief description of drawings]

FIG. 1 is a perspective view of a centrifugal barrel polishing apparatus of the present invention.

FIG. 2 is a partial sectional side view of the inside of the housing.

3 is a sectional view taken along line AA of FIG.

FIG. 4 is a front view showing a state in which the barrel tank is placed on the mounting stand and is hooked on the barrel case.

[Figure 5] Similarly, a side view

6 is a sectional view taken along line BB of FIG.

7 is a sectional view taken along line CC of FIG.

[Explanation of symbols] 1. Centrifugal barrel polishing device 2 ... Housing 13 ... Turret 16 ... barrel case 20: Mounting stand 26 ... Bolt (tightening means) 29 ... barrel tank 31 ... Recessed portion (tightening means)

Claims (3)

[Claims] 1. A centrifugal barrel polishing apparatus having a plurality of barrel tanks mounted on the circumference of a turret that revolves in a horizontal plane in a housing so as to be rotatable at equal intervals. A barrel tank mounting stand, one end of which is pivotally attached to the barrel case and the other end of which is hangable on the barrel case; and tightening means for fixing the barrel tank to the barrel case. Centrifugal barrel polishing device. 2. The centrifugal barrel polishing apparatus according to claim 1, wherein a mounting stand of the barrel tank is in a posture facing a barrel tank inlet of the housing. 3. The centrifugal barrel polishing apparatus according to claim 1, wherein the tightening means is a bolt screwed into the mounting stand,
A centrifugal barrel polishing device comprising: a concave portion formed in a barrel tank into which the bolt is inserted.