JPH074749B2 - Polishing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus suitable for polishing a work such as a fiber roll.

[0002]

2. Description of the Related Art Conventionally, a fiber roll has been formed by laminating and pressing disc-shaped special paper around an iron core to form a roll body.
A cushioning material having a rectangular surface of about 150 mm x 100 mm is fixed to the tip of an iron round bar, and the surface of the cushioning material is ground with a polishing tool having a cloth file attached. Specifically, the outer peripheral surface of the fiber roll that rotates on the lathe is pressed by a worker by manually pressing the polishing tool supported by the operator, or by pressing the polishing tool supported by the tool table of the lathe to sequentially wipe the sandpaper. The roughness of the is finished as fine.

[0003]

However, the prior art has the following problems. Since the polishing area of the polishing tool is small, the work efficiency is low and it is difficult to improve the polishing accuracy.

The cloth filing edge portion of the polishing tool hits the outer peripheral surface of the fiber roll, and the polishing surface is easily scratched.

It is an object of the present invention to improve the work efficiency of polishing work and the polishing accuracy, and to prevent unnecessary scratches on the polishing surface due to the edge portion of the polishing material.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a polishing apparatus capable of press-contacting an abrasive material arranged on a tool table to a workpiece outer peripheral surface which is held and rotated by a work rotation holder of a lathe. Fixed to the one side of the work, a strip-shaped abrasive that can be fed from the source and can be wound around the outer peripheral surface of the work, and a strip-shaped polishing on one end side of the support. The original material side portion of the material is fixed and held, and the abrasive material is warped in the width direction so that the abrasive surface that comes into contact with the workpiece outer peripheral surface is convex toward the workpiece side in the width direction of the abrasive material. And a cylinder capable of fixedly holding the wound end of the belt-shaped abrasive passing through the workpiece outer peripheral surface on the other end side of the support table and applying tension to the abrasive. Polishing between the machine and the outer peripheral surface of the work and the cylinder machine A guide surface that is provided in the stretched path and imparts a warp in the width direction to the polishing material so that the polishing surface that was in contact with the work outer peripheral surface of the polishing material becomes convex toward the work side in the width direction of the polishing material. And an air nozzle for blowing compressed air to each of the two wedge spaces formed by the abrasive and the workpiece outer peripheral surface on both sides of the polishing region of the strip-shaped abrasive that contacts the workpiece outer peripheral surface. It was made to become.

[0007]

According to the present invention, the following effects are obtained. The abrasive material was formed into a strip shape and wound around the outer peripheral surface of the work. Therefore, a wide area of about a half circumference of the work can be used as the polishing region, and the work efficiency and the polishing accuracy can be improved.

The tension of the polishing material can be adjusted by the fluid pressure of the cylinder device, and the contact pressure between the polishing material and the outer peripheral surface of the work can be easily linearly adjusted, and the polishing accuracy can be improved.

The holding surface of the abrasive holder provided on one end side of the abrasive wound around the outer peripheral surface of the work and the guide surface of the abrasive guide provided on the other end contact the outer peripheral surface of the work. A warp such that the polishing surface is convex toward the work side in the width direction of the abrasive is provided in the width direction of the abrasive. Therefore, the edge portion in the width direction of the polishing material does not hit the outer peripheral surface of the work to cause a flaw.

When the polishing of the work is stopped, the tension applied to the abrasive by the cylinder device is released, and at the same time, the compressed air from the air nozzle is applied to the abrasive and the work outer peripheral surface on both sides of the polishing area in contact with the work outer peripheral surface. Spray on each of the two wedge spaces formed by and. As a result, it is possible to prevent the abrasive material from levitating from the outer peripheral surface of the work, and prevent the edge portion in the width direction of the abrasive material from hitting the outer peripheral surface of the work and causing a flaw.

At the time of renewal due to the abrasion of the abrasive, after the abrasive is separated from the outer peripheral surface of the work by the operation of the air nozzle, one end of the abrasive is released from the abrasive holder and the other end is removed. Is released from the cylinder device. Then, after the wear amount of the abrasive material is fed out from the original fabric and the wear amount is removed, one end portion of the new abrasive material is fixedly held by the abrasive material holder and the other end portion is fixedly held by the cylinder device. This makes it possible to update the polishing material in a short time.
It can be done easily and surely.

[0012]

1 is a schematic diagram showing a polishing apparatus according to an embodiment of the present invention, FIG. 2 is an air circuit diagram of the polishing apparatus, and FIG. 3 is a schematic diagram showing the polishing apparatus attached to a lathe.

The polishing apparatus 10 is, as shown in FIGS. 1 and 3,
The belt-shaped abrasive material 11 arranged on the tool table 5 can be pressed against the outer peripheral surface of the work 4 such as a fiber roll which is held and rotated by the work rotation holder 2 of the lathe 1 and the tailstock 3. .

The polishing apparatus 10 includes a support base 12. The support base 12 is made of grooved steel, is fixed to the tool base 5, and is vertically arranged on one side of the work 4.

At this time, the abrasive 11 can be drawn out from the original fabric 11A and can be wound around the outer peripheral surface of the work 4 on the side opposite to the support base 12.

Further, the polishing apparatus 10 includes an abrasive holder 13
Is provided on the lower end side of the support base 12. Abrasive holder 13
The raw material side portion of the abrasive material 11 is fixedly held on the lower end side of the support table 12, and the polishing surface that comes into contact with the outer peripheral surface of the workpiece 4 of the abrasive material 11 is projected toward the workpiece 4 side in the width direction of the abrasive material 11. Therefore, the holding surface 13A is provided so as to give the abrasive 11 a warp in the width direction. A groove-shaped holding surface 12A is provided on the lower end surface of the support 12 along the holding surface 13A of the abrasive holder 13. The groove width of the holding surface 12A is the abrasive material 11
Is almost the same as the width of.

The polishing apparatus 10 also includes an air cylinder device 14 on the back surface of the support 12. Air cylinder device 1
4 is fixed to the support base 12, and the wound end of the abrasive material 11 passing through the outer peripheral surface of the work 4 is fixedly held by the stopper 15 on the back side of the support base 12 to apply tension to the abrasive material 11. . The air cylinder device 14 contracts due to air pressure and expands due to the spring force around the piston rod.

The polishing apparatus 10 also includes a groove-shaped abrasive guide 16 and an abrasive guide roller 17 at the upper end of the support 12. Abrasive guide 16, abrasive guide roller 17
Is provided in the abrasive material 11 extending path between the outer peripheral surface of the work 4 and the air cylinder device 14, and the polishing surface of the abrasive material 11 in contact with the outer peripheral surface of the work 4 is the work 4 in the width direction of the abrasive material 11. It is provided with guide surfaces 16A and 17A that give the abrasive 11 a warp in the width direction so as to be convex toward the side. The groove width of the abrasive guide 16 and the distance between both end flanges of the abrasive guide roller 17 are substantially the same as the width of the abrasive 11.

Further, the polishing apparatus 10 is provided with upper and lower air nozzles 18 and 19 at two upper and lower positions on the front surface of the support 12.
The air nozzles 18 and 19 have two wedge spaces 20A and 20B formed by the polishing material 11 and the outer peripheral surface of the work 4 on both sides of the polishing region of the polishing material 11 which is in contact with the outer peripheral surface of the work 4.
Blow compressed air to each of.

Further, the polishing apparatus 10 is provided with a suction device 21 on the front upper part of the support 12. The suction device 21 has the above-mentioned 2
Of the two wedge spaces 20A and 20B, a suction action is exerted on the wedge space 20A on the side where the polishing dust is sent out.

The air cylinder device 14 and the air nozzle 18,
As shown in FIG. 2, the numeral 19 shares the same compressed air source via a single switching valve 31. In FIG. 2, 32 is a relief valve, and the relief valve 32
The tension applied to the abrasive 11 can be adjusted by operating the decompression adjusting knob 33. Further, 34 is a speed control valve, which makes it possible to adjust the contraction speed of the air cylinder device 14. The switching valve 31 described above is mounted on the side portion of the support base 12.

Next, the function and effect of this embodiment will be described. The abrasive material 11 was formed into a strip shape and was wound around the outer peripheral surface of the work 4. Therefore, a wide area of about a half circumference of the work 4 can be used as the polishing region, and the work efficiency and the polishing accuracy can be improved.

The tension of the abrasive 11 is adjusted by the fluid pressure of the cylinder device 14, and by extension, the abrasive 11 and the work 4 are
The contact pressure with the outer peripheral surface can be easily linearly adjusted, and the polishing accuracy can be improved.

Abrasive material 1 wound around the outer peripheral surface of the work 4.
Holding surface 13A of the abrasive material holder 13 provided on one end side of
And the polishing material guide 16 and the guide surfaces 16A, 17A of the polishing material guide roller 17 provided on the other end side, the polishing surface contacting the outer peripheral surface of the workpiece 4 of the polishing material 11 is the work 4 side in the width direction of the polishing material 11. The abrasive 1
1 was applied in the width direction. Therefore, the edge portion in the width direction of the abrasive material 11 does not hit the outer peripheral surface of the work 4 to cause a flaw.

When the polishing of the workpiece 4 is stopped, the tension applied by the cylinder device 14 to the abrasive material 11 is released, and at the same time, the compressed air from the air nozzles 18 and 19 is applied to the abrasive material 1.
Spraying is performed on each of the two wedge spaces 20A and 20B formed by the abrasive 11 and the outer peripheral surface of the work 4 on both sides of the polishing region in contact with the outer peripheral surface of the first work 4. This makes it possible to prevent the abrasive material 11 from levitating from the outer peripheral surface of the work 4 and prevent the edge portion in the width direction of the abrasive material 11 from hitting the outer peripheral surface of the work 4 and causing a flaw.

At the time of renewal due to wear of the abrasive material 11,
By the operation of the air nozzles 18 and 19, the abrasive 1
After separating 1 from the outer peripheral surface of the work 4, one end of the abrasive 11 is released from the abrasive holder 13 and the other end is released from the cylinder device 14. Then, the wear amount of the abrasive material 11 is fed out from the original fabric, and after the wear amount is cut off, one end portion of the new abrasive material 11 is fixedly held to the abrasive material holder 13 and the other end portion is fixed to the cylinder device 14. Hold.
This makes it possible to update the polishing material 11 within a short time.
It can be done easily and surely.

When the polishing with the polishing material 11 is started or stopped, the switching valve 31 on the side of the support base 12 is operated by one hand only, so that the other hand can be operated while the lathe 1 is being operated. Cylinder device 14 and air nozzle 18, 1
By operating 9 and 9, the abrasive 11 can be brought into contact with and separated from the outer peripheral surface of the work 4, and the operability is good.

During the polishing operation of the work 4 in which the cooling liquid cannot be poured into the polishing region of the work 4, polishing dust can be sequentially sucked by the suction device 21.
As described above, the high-performance polishing apparatus 10 can be realized extremely simply and inexpensively.

In the practice of the present invention, the strip-shaped abrasive 1
1 may be wound around the outer peripheral surface of the work 4 facing the support base 12 (see FIG. 4).

[0030]

As described above, according to the present invention, it is possible to improve the work efficiency of the polishing work and the polishing accuracy, and to prevent unnecessary scratches on the polishing surface due to the edge portion of the abrasive material.

[Brief description of drawings]

FIG. 1 is a schematic view showing a polishing apparatus according to an embodiment of the present invention.

FIG. 2 is an air circuit diagram of the polishing apparatus.

FIG. 3 is a schematic view showing a polishing device attached to a lathe.

FIG. 4 is a schematic view showing a polishing apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lathe 4 Work 5 Tool stand 10 Polishing device 11 Strip abrasive 12 Supporting table 13 Abrasive holder 14 Air cylinder device 16 Abrasive guide 18, 19 Air nozzle

Claims (1)

[Claims] 1. A polishing device that allows an abrasive material arranged on a tool table to be pressed against an outer peripheral surface of a workpiece that is held and rotated by a work rotation holder of a lathe. The support stand placed on one side, the strip-shaped abrasive that can be fed from the source and can be wound around the outer peripheral surface of the work, and the source side of the strip-shaped abrasive is fixed at one end of the support. Polishing provided with a holding surface for holding the polishing material so that the polishing surface that comes into contact with the outer peripheral surface of the workpiece becomes convex toward the workpiece side in the width direction of the polishing material A material holder, a cylinder device for fixing and holding a wound end portion of a strip-shaped abrasive that has passed through the workpiece outer peripheral surface on the other end side of the support table, and is capable of applying tension to the abrasive, a workpiece outer peripheral surface and a cylinder. It is installed in the abrasive tension path between the equipment and An abrasive guide having a guide surface for imparting a widthwise warp to the abrasive so that the abrasive surface of the abrasive that was in contact with the outer peripheral surface of the workpiece becomes convex toward the workpiece in the width direction of the abrasive; A polishing apparatus comprising: an air nozzle that blows compressed air to each of two wedge spaces formed by the abrasive and the workpiece outer peripheral surface on both sides of a polishing region of the abrasive that contacts the workpiece outer peripheral surface. .