JPH0543458B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) This invention relates to a rotating tank of a barrel tank, which is composed of a substantially cylindrical tank having a truncated pyramid-shaped guide at the upper end of the cylinder and a dish-shaped rotating tank. The so-called whirlpool barrel polishing, in which the workpiece is polished by rotating a chisel, and the so-called rotary barrel polishing, in which the workpiece is polished by rotating the barrel in a horizontal or inclined state, are performed in conjunction without moving the mass in or out. The present invention relates to a barrel polishing method and apparatus.

(Prior art and problems to be solved) Conventional eddy current barrel polishing has good processing efficiency, but no improvement in surface roughness could be expected. In addition, chips, cracks, etc. of thermet chips, carbide chips, and ceramics, etc.
It is not suitable for polishing hard and brittle materials that are prone to chipping.

(Means for Solving the Problems) However, according to the present invention, a barrel tank composed of a substantially cylindrical tank and a dish-shaped rotating tank is rotatable around an axis and freely rotatable within a vertical plane. The workpiece, abrasive material and, if necessary, water and compound are charged into the barrel tank, and after the workpiece is rough-finished by whirlpool barrel polishing by rotating only the dish-shaped rotating tank, the workpiece is placed in the barrel tank. The axis of the barrel is rotated to a horizontal or inclined position, the barrel tank is rotated around the axis, and the workpiece is polished continuously using the same abrasive material by rotating barrel polishing, so whirlpool barrel polishing and rotating barrel polishing are These can be performed continuously using the same abrasive material, and extremely good surface roughness can be obtained. In addition, the barrel tank is installed horizontally or inclined, a predetermined amount of workpieces and abrasive material are charged into the barrel tank, and the barrel tank is rotated around its axis to polish the workpieces by rotating barrel polishing. death,
After that, if the barrel tank is subsequently rotated so that its axis is almost vertical, and only the dish-shaped rotating tank of the barrel tank is rotated to polish the workpiece, the workpiece will first be polished. A small radius is added to the edge by gentle rotating barrel polishing around , followed by high efficiency polishing by swirl barrel polishing. Therefore, the above-mentioned conventional problems such as no chipping, cracking, or chipping occur even when the workpiece is made of hard and brittle materials are solved.

The barrel tank in this invention is required to be able to be used for both the whirlpool barrel polishing method and the rotating barrel polishing method, and the cylindrical tank can be a cylindrical tank or a rectangular tank. It is recognized that it is better to have a conical (cone-shaped) guide. Also, the square cylinder tank is 6
Angular, heptagonal, and octagonal shapes are possible.

Embodiment 1 That is, according to the method of the present invention, an appropriate amount of workpiece and abrasive material are charged into a barrel tank whose axis is approximately vertical (it may be tilted depending on the case), and only the rotating tank is rotated. Then, perform eddy current barrel polishing in the usual manner, and once the specified degree of polishing is reached, the axis of the barrel tank is tilted at a certain angle (for example, 30
or 90 degrees), rotate the barrel bath and perform rotary barrel polishing in the usual manner. The above-described continuous polishing in which whirlpool barrel polishing is followed by rotating barrel polishing is generally used when finishing polishing a workpiece rather than rough polishing. Contrary to the above, in continuous polishing in which the barrel tank is first rotated with the axis line inclined, and then only the rotating tank is rotated with the axis line perpendicular, a small radius is first created at the edge of the workpiece.
After that, the surface is roughly polished. Therefore, the connected state is selected and used depending on the purpose of polishing. As the cylindrical tank of the barrel tank in the above, a hexagonal or octagonal square tubular tub is used, but when it is necessary to deburr the workpiece, it is advantageous to use a cylindrical tub for sliding polishing. To polish a workpiece using a cylindrical tank, first, the axis is tilted and the barrel tank is rotated, and after completing a predetermined polishing, the axis is made vertical and vortex barrel polishing is performed.

Embodiment 2 Next, details of the apparatus of the present invention will be explained with reference to the attached drawings. Figures 1 and 2 are a front view and a cross-sectional view of an apparatus implementing the present invention in which a barrel tank is installed so that its axis is vertical, and Figure 3 shows a system in which the barrel tank is rotated to an inclined position. FIG. The device of this invention fixes bearings 2, 2a on one frame 1, 1a installed at a predetermined interval, and horizontally extends symmetrically to both sides of a bearing 4 that supports a barrel tank 3 into the bearings 2, 2a. Rotating shafts 5, 5a protruding from the shafts are fitted and supported. A pulley 6 or a chain wheel is fixed to one end of the rotating shaft 5, and the pulley 6 or chain wheel is connected to a pulley 8 or a chain wheel of a motor 7 with a reducer installed at the bottom of the frame via a belt 9 or a chain. be rotated. As shown in FIG. 2, the barrel tank 3 is composed of a rectangular cylinder tank 10 and a dish-shaped rotary tank 11 that matches the lower end of the rectangular cylinder tank 10. Linings 10a and 11a are provided on the inner wall surface of the barrel tank 3, respectively.
is installed. The base end of a drive shaft 12 is attached at a right angle to the center of the outside of the bottom of the rotary tank 11, and the drive shaft 12 is mounted in a cylindrical portion 13 that is integrally attached to the center of the bottom of the rectangular cylindrical tank 10. It is fitted through and rotatably supported via a bearing 27. The cylindrical portion 13 is rotatably fitted into the bearing 4 supported by the rotating shafts 5, 5a, and a pulley 14 or chain wheel is fixed to one end of the cylindrical portion 13, and is fixed to the bearing 4. Flange 1
Pulley 17 of variable speed motor 16 installed at 5
Or rotated via chain wheel and belt 18 or chain. A pulley 19 or a chain wheel is fixed to one end of the drive shaft 12, and a variable speed motor 20 and an electromagnetic clutch 21 are installed on the flange 15.
It is rotated via a pulley 22 or chain wheel and belt 23 or a chain. In this case, when the electromagnetic clutch 21 is ON, the driving force of the motor 20 is transmitted to the pulley 22 or the chain wheel, but when the electromagnetic clutch 21 is OFF, the driving force of the motor 20 is transmitted to the pulley 22 or the chain wheel. Not communicated. In the figure, 28 is a truncated pyramid-shaped guide connected to the upper end of the square tubular tank.

In the embodiments of FIGS. 1 and 2,
A barrel tank consisting of a rectangular cylindrical tank and a matching dish-shaped rotating tank was used, but as shown in Fig. 4, the cylindrical tank 2
9 and a barrel tank 31 consisting of a dish-shaped rotating tank 30 that matches this can also be used. Whether the barrel tank is a cylindrical tank or a rectangular tank is selected depending on the purpose of polishing the workpiece.

The operation of the present invention will be explained based on the above embodiment. According to the apparatus of the present invention, it is possible to perform rotating barrel polishing that is continuous from whirlpool barrel polishing, or to perform whirlpool barrel polishing that is continuous from rotary barrel polishing.
Here, we will discuss the case where this invention is most easily understood by polishing from whirlpool barrel polishing to continuous rotary barrel polishing.

First, the barrel tank 3 is installed so that its axis is almost vertical, a predetermined amount of workpieces and abrasive material are put into the barrel tank 3, water and compound are added if necessary,
If necessary, a lid is attached to the opening 24 of the barrel tank 3 to seal it. Next, when the electromagnetic clutch 21 is turned on and the variable speed motor 20 is driven, the drive shaft 12 rotates and the rotary tank 11 rotates. As a result of this rotation, the mass (a mixture of the workpiece and abrasive material, etc.) is pushed up toward the inner peripheral wall of the square tubular tank 10 by centrifugal force, and then falls toward the center of the rotating tank 11 due to gravity, as indicated by the arrow 25 in FIG. The workpiece is polished (roughly finished) with an abrasive by repeating the flow shown in . When this whirlpool barrel polishing is completed, the variable speed motor 20 is stopped and the electromagnetic clutch 21 is turned off. Next, the motor 7 with a speed reducer is started to rotate the barrel tank 3, and the axis of the barrel tank is tilted horizontally or inwardly or outwardly by 30 degrees with respect to the horizontal as shown in FIG. 3, and then stopped.
Next, the variable speed motor 16 is driven to rotate the barrel tank 3 along with the rectangular cylinder tank 10 and the rotating tank 11 around its axis to cause the mass to flow as shown by the arrow 26 in FIG. Polished (gloss finish).
Therefore, the workpiece can be rough-finished such as removing burrs and burrs and adding radii in the whirlpool barrel bath, and then can be fine-finished and gloss-finished with plating base etc. by rotating barrel polishing using the same abrasive material. . When the rotary barrel polishing is completed, the variable speed motor 16 is stopped, and the motor 7 with a speed reducer is driven again to further rotate the barrel tank 3 so that the opening 24 faces downward and the mass is transferred to a vibration sorter (Fig. (not shown) to complete one cycle.

Incidentally, providing a spiral protrusion on the inner peripheral wall of the cylindrical tank 10 of the barrel tank 3 has the effect of improving the polishing effect and smoothing the discharge. Further, in the above embodiments, the case where the apparatus of the present invention is used for polishing has been described, but it can also be used for mixing, stirring, pulverizing, chemical operations, etc. other than polishing.

(Effects of the Invention) That is, according to the present invention, since the whirlpool barrel polishing and the rotary barrel polishing are linked, there is an effect that two types of polishing can be performed using the same polishing machine and polishing material. Further, according to the device of the present invention, the cylindrical tank and the rotating tank can be tilted freely in a vertical plane, and only the rotating tank can be rotated when the axis is vertical, and the barrel can be rotated when the axis is tilted or horizontal. Since the tank is installed to rotate, it is possible to perform two types of processing using the same barrel tank.

[Brief explanation of drawings]

Fig. 1 is a front view of the apparatus for implementing the present invention, Fig. 2 is a cross-sectional side view, Fig. 3 is a side view when the barrel tank is rotated, and Fig. 4 is a cylindrical tank. It is a partial cross-sectional enlarged view. 3... Barrel tank, 4... Bearing, 5, 5a... Rotating shaft,
10... Square cylinder tank, 11... Rotating tank.

Claims (1)

[Claims] 1. A predetermined amount of workpieces and abrasive material are charged into a barrel tank consisting of a substantially cylindrical tank and a dish-shaped rotating tank that closes the lower part, and the axis of the barrel tank is set almost vertically. A method for polishing a workpiece by rotating only the dish-shaped rotating tank while the barrel is rotated at a predetermined angle from a vertical direction; A barrel polishing method characterized by linking the method with a method of polishing a workpiece. 2. A patent claim in which the order of the polishing methods of polishing method A in which a barrel tank is rotated and polishing method B in which only a dish-shaped rotating tank is rotated can be either A→B or B→A. The barrel polishing method according to scope 1. 3. The barrel polishing method according to claim 1, wherein the polishing method by rotating the barrel tank is performed by tilting or making the axis of the barrel tank horizontal. 4. A barrel tank is constituted by a substantially cylindrical tank and a dish-shaped rotating tank that closes the lower part thereof, and a rotating shaft of the substantially cylindrical tank and a rotating shaft of the dish-shaped rotating tank are made into a concentric double structure, 1. A barrel polishing device, characterized in that the barrels are installed so that they can be rotated separately around the same rotational axis, and the barrels are installed so that their axes can be rotated at a predetermined angle from the vertical direction. 5. The barrel polishing device according to claim 4, wherein the rotation angle of the central axis of the barrel tank is 90 degrees or more. 6. The barrel polishing device according to claim 4, wherein the cylindrical tank is a cylindrical tank or a rectangular tank. 7. The barrel polishing device according to claim 6, wherein the rectangular tubular tub is hexagonal, heptagonal, or octagonal.