JPS608916Y2 - Face polishing machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for polishing small surfaces (side surfaces) of marble and other stone plates, glass, iron plates, and the like.

Small surfaces such as stone plates were polished using large automatic polishing machines or hand grinders, and the grinding wheels of different roughness were sequentially changed from coarse to fine.

Although the former has high performance, it is expensive and can only be adopted by some companies, while the latter is widely used by small and medium-sized enterprises, but is extremely inefficient and requires skill.

Conventionally, what has been proposed as a simple small surface polishing machine is
In both cases, a plurality of grinding wheels were arranged in parallel so that each axis was oriented horizontally, and any one of the grinding wheels was made to protrude for polishing.

However, the configuration for protruding an arbitrary grinding wheel became extremely complicated, and ultimately the grinding machine became too expensive to be practical.

Therefore, in this invention, a plurality of grinding wheels with different roughness are arranged vertically so that the upper surfaces of the grinding wheels rotate on the same or parallel vertical plane, and this group of grinding wheels is arranged vertically. In addition to providing movable means, a table that moves parallel to the top surface of the grinding wheel and a table that moves perpendicularly are stacked on top of each other, so that the small surface of the workpiece on the upper table can be pressed against the top surface of any grinding wheel. This is what I did.

Thereby, it is an object of the present invention to provide an apparatus which eliminates the drawbacks of the conventional apparatus, has a simple structure, is low in cost, and is capable of performing highly accurate small surface polishing work without requiring any skill.

This invention will be explained in detail below based on illustrated embodiments.

1 is a foundation, and 2 is a guide plate erected on the foundation 1.

The guide plate 2 has a U-shaped cross section with an opening at the front, and a dovetail groove is provided at the front end.

A sliding plate 3 has a dovetail at its rear end, and is fitted into a dovetail groove of the guide plate 2 to move the guide plate up and down.

Reference numeral 4 denotes a female screw, which is fixed to the top and bottom of the rear surface of the sliding plate 3 and screwed into the feed screw 5.

6 is a bevel gear device provided at the upper end of the feed screw;
The feed screw is rotated by the feed screw rotation motor M.

Therefore, as the motor M rotates, the sliding plate 3 moves up and down, and the support frame, which will be described later, can be moved up and down.

7 is a support frame fixed to the front surface of the sliding plate 3 and having a U-shaped cross section.

Two motors M' are arranged in parallel in the vertical direction on this support frame, with their rotational axes in the front-rear direction, and each rotational shaft projects toward the front of the support frame.

Reference numeral 8 denotes grinding wheels respectively mounted on the front end of the rotating shaft of the motor M'.

The grinding wheel 8 changes its roughness sequentially from top to bottom or from bottom to top.

Next, a base 9 is provided in front of the support frame 7, and on the base, two rails 10 are mounted parallel to the upper surface 8' of the grinding wheel, that is, in a direction perpendicular to the motor M' axis (first (in the left-right direction in FIG. 2) are arranged horizontally in parallel.

A lower table 11 has a wheel 12, is placed on a rail 10 on a base, and is movable left and right on the base.

Reference numeral 13 denotes a rail, which is placed on the lower table 11 and the upper surface of the grinding wheel 8'
, that is, parallel to the motor M' axis (in the vertical direction in FIGS. 1 and 2, and in the horizontal direction in FIG. 3).

Reference numeral 14 denotes an upper table, which has a wheel 15 and is placed on a rail 13 on the lower table, and is movable back and forth on the lower table 11.

With the above-mentioned configuration, the workpiece W is placed on the upper table 14, the feed screw rotation motor M is rotated, and the upper surface 8' of the grinding wheel 8 having the required roughness is aligned with the small surface W' of the workpiece. The support frame 7 is moved in the vertical direction to a position where it can be brought into contact and stopped.

Next, the motor M' of the grinding wheel is rotated, and the upper table 14 is rotated.
is advanced toward the grinding wheel, and a facet W' is formed on the upper surface 8' of the grinding wheel.
, and polish the small surface while moving the lower table left and right.

When the polishing is finished, move the support frame up or down and perform the next polishing with a grinding wheel of the required roughness.In the above configuration, the feed screw 5 is rotated by the motor M. However, the grinding wheel 8 can be operated manually, and each grinding wheel 8 is provided with a motor M'.
In this case, only the necessary grinding wheels may be rotated by known means.

The features of this invention are listed below.

(1) Since a plurality of grinding wheels are arranged one above the other and are moved up and down, there is no need for a mechanism for protruding the grinding wheels, which not only allows cost reduction, but also almost eliminates the occurrence of breakdowns.

(2) Since the workpiece can be moved back and forth and left and right on the upper and lower tables, it is possible to polish the top surface of the workpiece while always maintaining a constant angle (usually parallel to the top surface of the grinding wheel).

Therefore, the finishing accuracy of small surfaces is comparable to that of commercially available automatic polishing machines.

Furthermore, slight angle and dimension corrections that are inherent in polishing operations can be easily made by manually changing the degree of pressure contact of the workpiece against the top surface of the grinding wheel.

This is an advantage not available with automatic polishing machines, and does not require any skill.

(3) The degree of wear of individual grinding wheels varies depending on the material and frequency of use, resulting in uneven thickness.

However, with this invention, due to the structure of the grinding wheel and the structure of the upper and lower tables, even if there is a difference in the thickness of the grinding wheel, there is no problem in processing, and each grinding wheel can be used up to its usage limit. Therefore, it is extremely economical.

[Brief explanation of the drawing]

Figure 1 is a front view, Figure 2 is a sectional view taken along line A-A, Figure 3 is B
-B sectional view. 2...Guide plate, 3...Sliding plate, 5...
...Feed screw, 7...Support frame, 8...
...Grinding wheel, 8'...Top surface, 9...Base, 11...Lower table, 14...Upper table, W... ...Workpiece, W'...Small surface.

Claims (1)

[Scope of utility model registration request] A set of 8 grinding wheels that are movable up and down are arranged in the up and down direction so that the upper surfaces 8' of each can rotate in the same or parallel vertical plane, and the workpiece W is placed on an upper table. A small surface formed by overlapping a table 11 movable parallel to the top surface and a table 14 movable perpendicular to the top surface such that the small surface W' can be pressed against the top surface of any grinding wheel. Polishing machine.