JPH09174401A - Chamfering and outer periphery machining device for work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform accurate and high-precise chamfering and processing of an outer periphery rapidly and inexpensively. SOLUTION: Chamfering and outer periphery machining device for a work comprises a grinding wheel 18 inclined at an angle corresponding to a chamfering angle; a rotatable work shaft bed 5 longitudinally movable in the direction of the grinding wheel 18 and pulled in the direction of the grinding direction 18 through the force of a spring 7; and a copying plate 13 movable in a direction extending orthogonally to the longitudinal direction of the work shaft bed 5 arranged above the grinding wheel 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering / periphery processing apparatus for a work of various shapes such as glass, ceramic, silicon, quartz (excluding those having a concave portion on the grinding surface). .

[0002]

2. Description of the Related Art In the conventional chamfering / periphery processing of the above work, a work having a flat surface 21a for peripheral processing and a taper surface 21b for chamfering as shown in FIG. The chamfering process and the outer peripheral process are simultaneously performed by using the outer peripheral part of the re-shaped grindstone 21. In FIG. 4, 22 is a copying roller coaxially rotating with the grindstone 21 and 23 is a work roller, and 2 is a work roller.
Clamp shafts 4 and 25 clamp the work 23, and one clamp shaft 24 has a template 26 that abuts against the copying roller 22. The work 23 rotates and moves in the vertical direction in FIG. 4 (see FIG. 4B).

Further, an NC machining method utilizing numerical control as shown in FIG. 5 is also performed. In this case, the work 23 is fixed by vacuum suction and is stationary, and the grindstone 21 is held by the work 2.
By moving around 3 while rotating in the direction of the arrow,
Peripheral processing and chamfering processing are performed simultaneously.

[0004]

In the case of the above-mentioned conventional grinding method, the work 2 is caused by the wobbling of the grindstone 21 or the like.
No. 3 chamfer and wavy cutter-marker with abrasive grains
Claw 27 is engraved, and the flatness of the processed surface is likely to be lost (Fig. 6). In addition, since the grinding marks 28 of the abrasive grains are formed on the ground surface by the rotation of the grindstone 21, it adversely affects the mirror finishing in the next step. Further, there is a problem that since the point-contact continuous processing is performed, the processing takes time and the processing cost is inevitably high.

As described above, since the conventional chamfering / periphery processing method has many problems, the present invention does not have such a problem. It is an object of the present invention to provide a chamfering / periphery processing device for a work that can be performed at low cost.

[0006]

The present invention is directed to a grindstone inclined at an angle corresponding to a chamfering angle, and a rotation which can be moved back and forth in the grindstone direction and which is always pulled in the grindstone direction by a tension spring. A possible work headstock and a work plate which is arranged above the grindstone and is movable in a direction perpendicular to the longitudinal movement direction of the work headstock. Chamfering device, and a grindstone that rotates in a vertical direction, and a rotatable wheel that can be moved back and forth in the grindstone direction and that is always pulled in the grindstone direction by a tension spring.
Grinding headstock, a copying plate arranged below the grindstone and movable in a direction perpendicular to the longitudinal direction of the work headstock, and a grinding head mounted on the work headstock. In accordance with the above, the above-mentioned problems are solved by a work outer peripheral machining device having a template which contacts the copying plate.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings (FIGS. 1 to 3). 1 and 2
Indicates a grinding machine for chamfering, where 1 is a base.
The rail 2 is laid on it, and the LM is placed on the rail 2.
The guide 3 is installed. A head base 5a is fixed on the LM guide 3, and a work head 5 having a suction head 6 for vacuum-fixing the work 4 on the upper surface of the head base 5a is rotatable. (Ordinary motor is built in)

One end of a tension spring 7 is mounted on the base 1, and the other end of the tension spring 7 is connected from the LM guide 3 to the headstock base.
It is attached to the plate 8 installed over the space 5a. The tension spring 7 always acts to pull the work headstock 5 toward the grindstone 18. 9 is an air cylinder provided on the base 1,
Reference numeral 10 is a hydro speed regulator connected to the air cylinder 9 via a connecting plate 11.

The work headstock 5 is pressed by an air cylinder 9 and along the rail 2 via the LM guide 3 as shown in FIG.
Move to the right at. Then, when the air cylinder 9 moves backward, the work head 5 is pulled by the tension spring 7,
Following the retracting cylinder head, it moves to the left in FIG. 1 and approaches the grindstone 18. The hydro speed regulator 10 acts to suppress the retreat speed of the air cylinder 9 immediately before the work 4 comes into contact with the grindstone 18 as the work head 5 moves, and thus the work speed is reduced. 4 makes it possible to gently contact the grindstone 18 (cushion action).

Reference numeral 13 is a copying plate, and L is formed on the upper surface thereof.
An LM ball 15 that moves along the M guide 14 is installed. The LM guide 14 is fixed to a frame 16 provided upright on the base 1. The work 4 comes into contact with the copying plate 13 to complete the grinding, and then the work 4 is completed.
When the is rotated, the copying plate 13 receives the contact pressure from the work 4 and moves laterally (leftward in FIG. 2) along the LM guide 14 via the LM ball 15. Therefore, since no unreasonable force is applied to the work 4, there is no inconvenience that the work 4 is scratched or the copying plate 13 is worn and accurate machining cannot be performed. The moved copying plate 13 is returned to its original position by the returning cylinder 17 installed in the frame 16.

The grindstone 18 is installed on the base 1 and is inclined according to the chamfering angle (the angle is adjustable). Further, the grindstone 18 is rockingly driven during grinding by a rocking motor having an eccentric shaft arranged on the base 1.

The chamfering process for the square work 4 will be described (see FIG. 2). After the work 4 is vacuum-sucked by the suction head 6 at the set position (the position of the virtual line), the work 4 Due to the backward movement of the cylinder 9 and the tensile force of the tension spring 7, the pulling force is pulled toward the grindstone 18 side, and the lower side of one side surface contacts the surface of the rotating grindstone 18. From the state shown in FIG. 2, first, the straight line portion a is ground over the entire length at once, and the straight line portion a comes into contact with the copying plate 13.

Next, when the work 4 rotates in the direction of the arrow, the corner portion b is ground, but the corner portion b continues to be in contact with the copying plate 13 and the work 4 2, the copying plate 13 is to be moved in the direction of the arrow. Here, if the copying plate 13 is fixed as in the conventional case, the work 4 moves while strongly rubbing the copying plate 13, so that the work 4 is easily scratched and copied. Plate 13 is easily worn.

Therefore, the copying plate 13 according to the present invention.
Is movable, the copying plate 13 moves in the rotation direction of the work 4 as the work 4 rotates. Therefore,
Since an unreasonable force is not applied to the contact portions of both the work 4 and the copying plate 13, both are less likely to be damaged.

Next, the straight portion c is ground until it comes into contact with the grindstone 18 until it comes into contact with the copying plate 13, and then the work 4
Is rotated to grind the corner portion d. Copy pre
When the boot 13 has a length corresponding to the entire circumference of the work 4, the remaining portion can be continuously ground in the same manner as above. However, in the illustrated example, the copying plate 1 is used in consideration of downsizing of the device, ease of maintenance, and the like.
The length of 3 is set to a length corresponding to half of the entire circumference of the work 4, and after the corner portion d has been ground, the work of the air cylinder 9 causes the work 4 to retreat once and, in the meantime, the return cylinder. The means 17 is used to return the copying plate 13 to its original position.

After the copying plate 13 is returned to the original position as described above, the straight line portion e, the corner portion f, the straight line portion g and the corner portion h are ground in the same manner as above. When this is done, the work 4 moves backward and the chamfering process is completed. Since the grindstone 18 is rockably driven by the rocking motor, the surface roughness of the machined surface can be extremely improved and the life of the grindstone 18 can be extended.

After the chamfering work of the lower side of the work 4 is completed, the work 4 is turned upside down by a reversing device (not shown) at the work set position, and the chamfering work is performed again in the same manner as described above. Become.

FIG. 3 shows the structure of an outer peripheral grinding device for grinding the outer peripheral side surface of the work 4, in which the same reference numerals as those in FIGS. 1 and 2 indicate the components in FIGS. Since they refer to the same or substantially the same components, detailed description thereof will be omitted. The template 19 shown in FIG. 3 is a template attached to the work head 5, and is in contact with the copying plate 13a arranged below the grindstone 18a.

An LM ball 15a, which freely moves along the LM guide 14a, is fixed to the lower side of the copying plate 13a. The LM guide 14a is fixed to a frame 16a provided on the base 1. In this case, the grindstone shaft is arranged horizontally, and the grindstone 18a rotates in the vertical direction. In addition,
Although not shown, in this case as well, a cylinder for returning the copying plate 13a to the original position is installed.

The work processing sequence in this peripheral grinding device is the same as in the chamfering device. Grinding in this case is also
Since the grindstone 18a makes surface contact with the outer peripheral surface of each linear portion of the work 4 at a time, the processing time can be significantly shortened and the surface accuracy and surface roughness of the processed surface can be improved. . Further, it is also possible to perform mirror polishing by selecting the grindstone 18a. It is also possible to prevent clogging of the grindstone and improve the surface roughness of the ground surface by mounting the electric discharge grinding device.

Generally, the chamfering apparatus and the outer peripheral processing apparatus are arranged in parallel on the same base, and the chamfering processing and the outer peripheral processing (whichever comes first) are automatically and continuously performed. To be done. Although the illustrated work is square,
The work to be processed by the present apparatus is not limited to this, and can be applied to work of any shape except those having concave portions on the grinding surface.

[0022]

The present invention is as described above. According to the present invention, the chamfering process and the outer peripheral process of a work having any shape except for those having a concave portion on the grinding surface are performed on the grinding surface. A work surface with a compact structure that can be performed with high accuracy without generating a cutter mark or grinding marks, and that grinding is performed by surface contact so that grinding efficiency is high and processing costs can be reduced. There is an effect that a picking / periphery processing device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of a chamfering device for a work according to the present invention.

FIG. 2 is an explanatory diagram of the operation of the apparatus shown in FIG.

FIG. 3 is a configuration diagram of an outer circumference processing apparatus for a work according to the present invention.

FIG. 4 is a configuration diagram of a conventional work chamfering / periphery processing apparatus.

FIG. 5 is another configuration diagram of a conventional work chamfering / periphery processing apparatus.

FIG. 6 is a view showing a cutter mark and a grinding mark generated in a work in the case of a conventional work chamfering / periphery processing device.

[Explanation of symbols]

 1 Base 2 Rail 3 LM Guide 4 Work 5 Work Axle 6 Adsorption Head 7 Tension Spring 8 Contact Plate 9 Air Cylinder 10 Hydro Speed Regulator 11 Connecting Plate 13 Copy Plate 14 LM Guide 15 LM Ball 16 Frame 17 Return Cylinder 18 Grindstone 19 Template

Claims (4)

[Claims] 1. A grindstone tilted at an angle corresponding to a chamfering angle, and a rotatable wheel which can be moved back and forth in the grindstone direction and which is always pulled in the grindstone direction by a tension spring.
Chamfering work, characterized by having a work head and a copying plate which is arranged above the grindstone and is movable in a direction perpendicular to the longitudinal direction of the work head. apparatus. 2. A grindstone which rotates in a vertical direction, a rotatable work head which can be moved back and forth in the grindstone direction and which is always pulled in the grindstone direction by a tension spring, and below the grindstone. A copying plate which is arranged and is movable in the direction perpendicular to the longitudinal direction of the work headstock, and a copying plate which is attached to the work headstock and abuts on the copying plate as the grinding progresses. An outer peripheral processing device for a work, which has a template in contact with the work. 3. A work vacuum-adsorbed on the work shaft base.
3. The chamfering / periphery processing apparatus for a work according to claim 1, further comprising means for returning the copying plate that moves with the rotation of the work to the original position. 4. A work in which the work chamfering device according to claim 1 and the work peripheral device according to claim 2 are arranged in parallel.
Chamfering / periphery processing device.