JPS6023945B2 - Polishing tool with correction tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polishing odor mainly used for finish polishing of wood, and in particular, to correct the polishing roll to a more perfect circle so that the object to be polished can be polished with high precision at all times. Relating to an abrasive tool with a correction tool.

Currently, finishing polishing of wood surfaces is dominated by belt-shaped cloth abrasive paper, but this type of polishing device presses the cloth abrasive paper against the surface of the object to be polished from the back side with a press plate. The disadvantage is that the corners of both edges of the object to be polished are polished somewhat rounded, and coated abrasive paper has a thin abrasive layer on the surface, so it is not as durable as a polishing roll and needs to be replaced frequently. It was uneconomical. A polishing device using a polishing roll is
Although the above-mentioned disadvantages of abrasive cloth paper are eliminated, to date there have been no successful examples of devices using abrasive rolls for this type of application, and all prototypes and experiments have ended in failure. .

The present inventor was able to achieve this for the first time by using an abrasive roll made of non-woven fabric, which is considerably harder than conventional abrasive rolls, and whose surface is rounded to a more perfect circle. I have seen success in finishing sanding with an abrasive roll.

Finish polishing using a polishing roll has a polishing power comparable to that of coated polishing paper, does not cause the corners of the polished object to be rounded, and has an extremely long life and economical characteristics.

However, in order to maintain this characteristic, the surface of the polishing roll must be kept perfectly circular, so if the surface of the polishing roll becomes irregular due to use, it must be corrected. The present inventor rotated the polishing roll, applied a correction tool such as a grindstone to the polishing roll, and used the correction tool to correct the polishing roll into a perfect circle.

However, strangely, the abrasive force of the abrasive roll after correction is extremely weak, and as it is used, the abrasive force increases, and the problem is that when sufficient abrasive force is generated, it has to be corrected again, so the There was a drawback that the more corrections were made to achieve precise finish polishing, the more the polishing power decreased. The inventor of the present invention did not understand the reason why the abrasive has a characteristic that the abrasive power improves as it is used, which is completely opposite to that of ordinary abrasives, and struggled to find a countermeasure.
We investigated the cause from all angles, and at the same time, we carefully observed the surface of the abrasive roll using a microscope. We found that when the abrasive roll was cut with a correction odor, the abrasive grains fell off more easily than the base material. Sometimes, based on the assumption that the base material wears out more than the abrasive grains, when we reversed the abrasive roll during correction, we found that the abrasive force immediately increased after correction, and that the abrasive force gradually decreased as it was used. , issued.

Even when the polishing roll modified in this way has been used for a considerable period of time and its polishing power has decreased, the polishing roll modified by the forward rotation of the subordinate shaft can be used for a considerable period of time and its polishing power has improved. In other words, the polishing force when the polishing force is reduced is approximately equal to the polishing force when the conventional polishing force is increased, and the overall polishing force is significantly improved. Therefore, an important object of the present invention is that the polishing roll has excellent polishing power immediately after correction, and can be used for polishing.

To provide a polishing shell which can always correct a wheel into a perfect circle, can polish an object to be polished with higher precision, and has a durable correction odor which can extend the replacement period. An embodiment of the present invention will be described below with reference to the drawings.

The polishing tool with a correction odor shown in FIGS. 1 and 2 includes a polishing roll, a correction tool 2 that grinds the surface of the polishing roll 1 to correct it to a perfect circle, and a power source that drives the polishing roll 1. It is equipped with a motor 3, a changeover switch 4 which is a reversing means for reversing the polishing roll, and a belt conveyor 5 which is disposed on the underside of the polishing roll and transports the object to be polished.

The abrasive roll has abrasive grains attached to a base material that is movable and has countless voids, and has a cylindrical overall shape. It is attached to the frame 8 via. For example, non-woven fabric, cloth, paper, synthetic resin foam, etc. can be used for the flexible substrate, and these can be used alone or in combination.

Figures 3 through 6 show preferred polishing.

-Lou side is shown. The polishing roll 1 shown in FIG. 3 is a non-woven fabric with abrasive grains attached to the surface of the fibers rolled in the radial direction, and the polishing roll 1 shown in FIG. The abrasive cloth 9 with abrasive grains attached thereto is sandwiched between the abrasive cloth 9, the abrasive roll shown in FIG. , a nonwoven fabric is embedded in a synthetic resin foam, and abrasive grains are bonded to one or both of the nonwoven fabric or the synthetic resin foam.

In the polishing roll shown in Fig. 4, when polishing an object, the surface of the cloth abrasive paper, that is, the surface to which abrasive grains are attached, hits the object, and when correcting it, a correction whetstone hits the back surface. It is better to rotate.

The correction tool 2 has a guide arranged parallel to the axis 6 of the abrasive roll so that it can be moved along the abrasive roll parallel to its axis 6 and the depth of contact with the abrasive roll 1 can be adjusted. A movable table 11 is attached so as to be movable, and a motor 2 is mounted on the movable table 11 at a slight angle with respect to the shaft 6 of the polishing roll.

Two cylindrical bodies 13 are fixed to the movable table 11, and the cylindrical bodies 1
The motor 2 is fixed to a rod 14 which is freely inserted into the rod 3.

The tip of a threaded rod 15 is connected to the rod 14 so that it can rotate but not move toward the bag.
It is screwed into a nut 16 fixed to the moving table 11, and a handle 17 is fixed to the rear end.
Rotation causes the threaded rod 15 to rotate, causing the motor 2 to move along the barrel 13 toward or away from the abrasive roll, thereby adjusting the corrective grinding depth of the abrasive roll.

A grindstone 18 is fixed to the shaft of the motor 2, and the grindstone I8 also grinds and corrects the surface of the polishing roll. The correction odor does not necessarily need to rotate; for example, it is also possible to bring a non-rotating grindstone into contact with the surface of the polishing roll and grind it by reversing the polishing roll. However, as shown in Figs. 1 and 2, in the case where the grinding roll is ground with a rotating grindstone 18, the relative speed between the grinding roll and the grinding wheel at the point of contact between the two can be increased, and corrective grinding can be carried out quickly. , and has the effect of achieving high accuracy. Therefore, the rotational directions of the grindstones 18 are opposite to each other at the point of contact, that is, they are rotated in the same direction as the polishing roll, as shown by the dashed line in FIG. The cut-off switch 4 is
This switch reverses the motor 3 by switching the two input connections of the three-phase motor, and as shown in FIG. 1, it is a two-circuit, three-contact switch connected between the motor 3 and the power source.

Assuming that the motor 3 rotates forward to polish the object to be polished as shown by the solid line in FIG. 1, the motor 3 is reversed by switching the two connections to the position shown by the chain line.

In this manner, when the motor is a three-phase motor, the polishing roll 1 can be easily reversed by switching between two phases.

However, in the present invention, the reversing means for reversing the polishing roll is
It is not limited to a switch that changes the connection of the motor; for example, a reversing gear or pulley may be interposed between the motor and the polishing roll, and power is transmitted through this gear or pulley only when making corrections. Inversion is also possible.

As described above, in the polishing roll equipped with the correction tool of the present invention, since the polishing roll is equipped with a reversing means, when the correction tool is brought into contact with the polishing roll and the polishing roll is ground to correct it into a perfect circle, the polishing roll is Invert. In this state, the direction in which the polishing roll comes into contact with the correction odor is opposite to the direction in which it contacts the object to be polished, so that it has excellent polishing power immediately after being corrected with the correction tool. This is because the abrasive roll of the present invention does not have strong abrasive power immediately after being ground with a whetstone or the like, since the abrasive grains on the surface have fallen off, but this is the opposite of what it is during correction. When the object is polished by rotating in the direction, the flexible abrasive material will be polished as if it were being polished on the back side. The abrasive grains on one side of the fiber that came in contact with the odor will fall off during correction, but the abrasive grains on the back side will hardly fall off, and when the object to be polished is rotated in the opposite direction to the one used for correction, the fiber will be removed. Due to its malleability, the surface to which the abrasive grains are attached comes into contact with the object to be polished, thereby achieving excellent polishing power. This phenomenon occurs when the base material is not fibrous and has numerous voids and portability, such as synthetic resin foam, and the polishing force immediately after correction can be extremely high. Due to this characteristic, the polishing device of the present invention not only improves the overall polishing power but also improves polishing performance.

Because the wheels can be adjusted frequently, more precise polishing is possible.Furthermore, it has a significantly longer life than cloth abrasive paper, is more economical, and requires no effort to replace consumables. It has many powerful effects. It should be noted that the polishing device of the present invention using a polishing roll can be used not only for the above-mentioned wood surface finishing but also for all kinds of applications, and since high-precision polishing power is important in any application, the present invention However, this device is not limited to wood sanding.

[Brief explanation of the drawing]

1 and 2 are a front view and a side view of a polishing roller equipped with a correction tool of the present invention, FIGS. 3 to 6 are side views showing a specific example of a polishing roll, and FIG. FIG. 3 is an enlarged sectional view showing the surface of the polishing roll immediately after. 1... Polishing roll, 2... Correction tool, 3...
...Mode, 4...Cut-off switch, 5...
...Belt conveyor, 6...shaft, 7...
・Bearing, 8... Frame, 9... Abrasive cloth, 10... Guide, 11... Moving table, 1
2...Motor, 13...Cylinder, 14...Rod, 15...
...Threaded rod, 16...Nut, 17...Handle, 18.
...Whetstone. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. A polishing roll formed in a cylindrical shape, and a correction tool that comes into contact with the surface of the polishing roll to correct it by cutting,
The abrasive roll has countless abrasive grains attached to a flexible base material with innumerable voids, and is rotatably supported and connected to a power source so that it is rotationally driven. The connected abrasive tools include means for reversing the abrasive roll, and the reversing means is configured to reverse the abrasive roll when the correction tool contacts and cuts the surface of the abrasive roll. A polishing tool equipped with a correction tool characterized by: 2. A polishing tool comprising the correction tool according to claim 1, wherein the base material of the polishing roll is any one of nonwoven fabric, cloth, paper, and synthetic resin foam. 3. A polishing tool comprising the correction tool according to claim 2, wherein the polishing roll is formed into a cylindrical shape by laminating sheet-like base materials in the radial direction. 4. A polishing tool comprising the correction tool according to claim 1, wherein the correction tool is movably mounted along a guide provided parallel to the axial direction of the polishing roll. 5. A polishing tool comprising the correction tool according to claim 1, wherein the correction tool comprises a motor and a grindstone fixed to the shaft of the motor. 6. A polishing tool comprising the correction tool according to claim 5, wherein the motor is arranged such that its rotation axis is inclined with respect to the rotation axis of the drive roll.