JPH0248219Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a polishing machine used for removing rust from metal surfaces, removing paint, and polishing and smoothing the surfaces of metals, stones, etc.

Conventionally, these operations such as polishing and removing rust have been carried out using grinders and sanders using whetstones, etc. However, in cases where the surface has large irregularities or rough grinding or polishing work is performed, the polishing may not adapt to the irregularities of the surface. Not only is polishing efficiency poor and the work time consuming, polishing bodies such as whetstones are severely damaged and worn, and the finished surface is often unsatisfactory. Furthermore, part of the grinding wheel was not only exposed and dangerous, but also grinding debris was flying around. The present invention aims to provide a polishing machine based on a new concept that eliminates these drawbacks.

This idea connects a wide-diameter cylindrical casing 1 with an open bottom to a rotational drive shaft 2 of a drive device, and also has a plurality of horizontal shafts 3, 3'... Spread ... in a radial pattern,
A polishing rotary body 6, 6' has a structure in which a large number of wide triangular grinding teeth 4 are protruded in parallel on the outer periphery, and a shaft hole 5 with a diameter considerably larger than the horizontal shaft diameter is bored in the center.
This relates to a polishing machine characterized in that a plurality of horizontal shafts 3, 3', . . . are attached to each horizontal shaft so as to penetrate through the shaft hole 5 of the polishing machine. In addition, in the figure, 7 is a center frame inside the casing 1, 8 is a bearing groove for the horizontal shafts 3, 3', 9 is a connecting bolt, 10 is a bottom plate of the connecting bolt, 11 is a drive device with a built-in air motor,
12 is the metal surface of the material to be polished.

In this invention, the cylindrical casing 1 is rotated via the rotary drive shaft 2 by operating the drive device 1 by lightly pressing the polishing machine of the present invention against the surface to be polished.
When the casing rotates, its horizontal axis 3, 3'...
The polishing rotating bodies 6, 6' attached to the casing are also forcibly moved around the center of the cylindrical casing. At this time, the polishing rotors 6, 6'... are grounded at the ridgeline of the triangular apex of one grinding tooth 4, and as the casing 1 rotates a little further, it is pushed by the horizontal shafts 3, 3'... The polishing rotors 6, 6', . . . also rotate, and the next grinding tooth 4 comes into contact with the ground. In this way, the polishing rotors 6, 6'
......, like a spur gear with parallel tooth ridgelines, tries to roll in a straight line, but the horizontal axes 3, 3'...
..., the casing 1 is restrained by other polishing rotors and forced to rotate (because the rotation speed is different along the ridge direction of the grinding tooth 4), so the polishing rotors 6, 6'... are horizontally oriented. 3, 3'... and the shaft hole 5, the polishing rotors 6, 6'... slide as if scraping against the ground surface, and the polishing rotors 6, 6 '..., and at this time, the grinding teeth 4 scrape off rust, deposits, and convexities on the surface to be polished, thereby polishing the surface. The grinding force at this time is much stronger than that of the stone plate made of abrasive particles because the ridgeline blade at the apex of the grinding tooth is used to scrape the surface. Also, excessive load on the polishing rotors 6, 6'...
When an impact is applied, the horizontal shafts 3, 3'... and the shaft hole 5 can swing and loosen due to the play between them. Also, since a considerable portion of the ground debris is confined within the casing 1, there is no scattering of debris or sparks.
Moreover, the polishing rotary bodies 6, 6'...and the casing 1
It is extremely safe because it is stored inside and is not exposed. Although the casing 1 rotates, it does not pose any danger. In addition, it is easy and inexpensive to replace worn or worn polishing rotors 6, 6', . . . .

As described above, according to the present invention, the polishing operation time can be reduced to about 1/4 of the conventional polishing time by adopting the configuration having the above features. In addition, the finished surface is beautiful, there are no scattered fragments, and no rotating parts are exposed, so it is safe and can be manufactured at a lower cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the polishing machine of the present invention;
FIG. 2 is a bottom view showing the inside of the casing, FIG. 3 is a longitudinal sectional view of the casing, and FIG. 4 is an explanatory view showing the polished state. 1: Casing, 2: Rotation drive shaft, 3, 3':
Horizontal axis, 4: Grinding tooth, 5: Shaft hole, 6, 6': Polishing rotating body.

Claims (1)

[Scope of utility model registration request] A wide-diameter cylindrical casing 1 with an open bottom is connected to a rotary drive shaft 2 of a drive device, and a plurality of horizontal shafts 3, 3'... are radially extended between the center of the inside of the casing and the inner circumferential wall. I have a polishing rotary body 6, 6', which has a structure in which a large number of wide triangular grinding teeth 4 are protruded in parallel on the outer periphery, and a shaft hole 5 with a diameter considerably larger than the horizontal shaft diameter is bored in the center. A polishing machine characterized in that a plurality of horizontal shafts 3, 3', . . . are attached to each horizontal shaft so as to penetrate through the shaft hole 5.