JPH044098B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a polishing device for rubbing and polishing various parts using the flow of an abrasive material.

(Prior Art) Conventionally, an abrasive material is housed together with the object to be polished in a cylindrical sealed container as a device for polishing articles of particularly complex arbitrary shapes such as watch parts, various sewing needles, injection needles, etc. Barrel-type polishing devices are used that polish articles by rubbing by rotating the container and causing the contents to flow or vibrate, but polishing is particularly effective by creating a figure-of-eight flow in the container. Therefore, it has been proposed that the container axis is inclined with respect to the rotation axis.

(Problem to be Solved by the Invention) However, in the above-mentioned conventional devices, especially those in which the container axis is inclined with respect to the rotation axis, when the device is enlarged and lengthened, the angle of inclination may not be sufficient. , the rotating shaft at the end of the container is located outside the outer periphery of the container, and the distance from the center of the axis of the container increases, and there is a difference between both ends of the container and the workpiece flowing in the center of the container. There was a problem that variations occurred in the finished state.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems and to provide a polishing apparatus that can uniformize the finishing accuracy of the workpieces housed in each tank.

(Means for solving the problem) A plurality of containers each having a plurality of rotation axes revolving around a main axis, each having a short axial length with respect to one of the rotation axes, are connected. The shafts are inclined so that the axis of the tank is at an angle with the axis of the rotation axis at approximately the center of each tank.

(Function) Since this invention has the above-mentioned configuration, the axis of each tank is located approximately at the center of each tank and the axis of the rotation axis intersect with each other, so the axis of each tank is centered around this intersecting portion. Since it moves up and down in the direction to make the flow inside the tank into a figure eight shape, the workpieces in the tank are polished uniformly, and since multiple tanks can be rotated at once, mass production can be ensured.

(Example) An example of the present invention will be described with reference to the drawings. 1 to 3 show the first embodiment.
The figure is a front sectional view of the entire device, and FIG. 2 is a left side view of the same. Reference numeral 1 denotes a revolving frame rotatably mounted on a base 2 through a main shaft 3, and both side plates 1 of the revolving frame 1
A plurality (three in this embodiment) of rotating shafts 4 are rotatably and evenly disposed in the circumferential direction between a and 1a via bearing members, and each rotating shaft has a plurality of polishing shafts. A rotating tank group 6 is constructed by installing rotating frames 5, 5, and 5 on a shaft. Each rotating frame 5 for attaching a polishing tank of the rotating tank group 6 is made of a cylindrical hollow body having an opening/closing lid 7 on one side, and the axis 5a is aligned with the axis 4 of the rotating axis 4.
a and is installed at an angle so that it is located approximately at the center of each frame length, and the adjacent rotating frame 5 for attaching the polishing tank fixes the end plate and also attaches to the ends of both the shortest parts. It consists of a plate with a rotating shaft 4 protruding from it. 8
is a polishing tank consisting of a cylindrical or polygonal tubular hollow container, which can be sealed tightly by a lid member 9 that can be opened and closed, and does not shake against each polishing mounting rotating frame 5. It can be stored and held without any problem.

Reference numeral 10 denotes a chain wheel pivotally attached to the main shaft 3, and is drivingly connected to a chain wheel 12 pivotally attached to the drive shaft of a main drive motor 11 via an endless chain belt 13. Reference numeral 14 denotes a drive wheel rotatably mounted on the main shaft 3. The drive wheel 14 is rotatably connected to a chain hole 16 rotatably attached to the drive shaft of the geared motor 15 via a chain belt 17. and a chain hole 18 which is pivotally attached to each rotating shaft 4 are rotatably connected via a chain belt 19.

In the polishing device having the above-mentioned configuration, objects to be polished (a) such as watch parts, sewing needles, injection needles, etc. are put into the polishing tank 8 together with the polishing material b, the lid member 9 is closed, and each polishing tank is attached to a rotating frame. 5, the main drive motor 11 and geared motor 15 are rotated to perform the polishing process.

That is, when the main drive motor 11 is driven, the main shaft 3 is rotated via the chain belt 13 that extends between the chain wheels 10 and 12, so that the main shaft 3 is rotated via the rotation shaft 4 to the revolving frame 1 which is integrated with the main shaft 3. Each rotating frame 5 for attaching a polishing tank provided on an axis revolves around the main shaft 3. Therefore, the centrifugal force that accompanies the revolution acts on the polishing tank 8 held in the rotation frame 5 for attaching each polishing tank, and by rotating the revolution frame 1 beyond a certain angular velocity, the revolution is always greater than the gravitational acceleration. It is possible to impart an acceleration speed toward the outer radius of the orbit. Therefore, the article to be polished and the abrasive material b housed in each polishing tank 8 are subjected to acceleration in the direction of one rotation around the axis each time the revolving frame 1 rotates once.
When the geared motor 15 is rotationally driven in this state, the dry wheel 14 rotates via the chain belt 17, and the outer drive wheel 11 and each rotating shaft 4 chain wheel 18 are rotationally connected via the chain belt 19. , the rotation axis 4 rotates, and the axes 5a of the rotation frames 5 for attaching each polishing tank are inclined with respect to the rotation axis 4, so that each polishing tank 8
rotates around the rotation axis 4 while making a grinding motion with the center of the tank length as the fulcrum. Therefore, the article a to be polished and the abrasive material b housed in the polishing tank 8 exhibit a figure-eight flow in the tank due to the above-mentioned grinding movement. Due to this figure-of-eight flow, the abrasive material b flows not only against the circumferential surface of the object to be polished but also in the direction of the end surface, and the entire surface of the object to be polished a is polished uniformly, and each polishing tank 8 is relatively short, and the axis of the polishing tank 8 and the axis 4a of the rotating shaft 4 are located at the center of the tank and intersect with each other, so that each article to be polished in the tank is polished uniformly. be processed.

Next, FIGS. 4 and 5 show a second embodiment of the polishing tank. The diameter of the polishing tank 20 is made small so that a plurality of polishing tanks (four in this embodiment) can be accommodated in the circumferential direction of each polishing tank mounting rotating frame 5, and a lid member 21 is provided at one end of each polishing tank 20. The axes of each polishing tank 20 are located approximately at the center of each tank and are in an angular state with respect to the axis of the rotating frame 5 that houses them. This produces the same figure-8-shaped fluid sliding effect as in the first embodiment.

Incidentally, in the first embodiment, the polishing tank mounting frame 5 may be replaced with the polishing tank 8 directly, and the same effect will be obtained.

(Effects of the Invention) As described above, according to the polishing apparatus of the present invention, the axis of each polishing tank is located approximately at the center of the tank and maintains an angle with the rotation axis, and, Because the length of the tank in the axial direction is short, the figure-eight flow in each part of the tank due to the grinding movement of the polishing tank is almost uniform without extreme differences in each part.
As a result, it is possible to make the polishing finishing accuracy of the polished article uniform, and it is also possible to polish a wide variety of products in small quantities at the same time.In addition, since multiple polishing tanks are arranged in the axial direction, mass production can be ensured. It is effective.

[Brief explanation of drawings]

The drawings show an embodiment of the polishing apparatus of the present invention, and FIG. 1 is a front sectional view of the first embodiment, FIG. 2 is a left side view of the same, and FIG. 3 is a sectional view taken along the line A-A in FIG. 2. , FIG. 4 is a partially cutaway front view of a rotating frame for attaching a polishing tank showing a second embodiment, and FIG. 5 is a sectional view taken along the line B--B in FIG. 4. 1...Revolution frame, 3...Main axis, 4...Rotation axis, 5
... Rotating frame for polishing mounting, 8, 20 ... Polishing tank, 1
1... Main drive motor, 13, 17, 19... Chain belt, 14... Drive wheel, 15... Geared motor, a... Article to be polished, b... Abrasive material.

Claims (1)

[Claims] 1 Polishing having a plurality of rotation axes parallel to the main axis revolving around the main axis, a cylindrical polishing tank containing the article to be polished and the abrasive material being attached to the rotation axis, and provided on the one rotation axis. A polishing device in which the tank is formed by connecting a plurality of relatively short polishing tanks in the axial direction, and the shafts of each tank are arranged at approximately the center of each shaft at an angle with respect to the rotation axis.