JP2538403Y2 - Grinding equipment with a grinding wheel correction device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding machine having a tailstock with a device for correcting a grindstone.

[0002]

2. Description of the Related Art As shown in FIG. 3, a table 2 is mounted on a bed 1 so as to be movable in the left-right direction by a table feed motor 3, and a headstock 4 provided with a spindle motor 5 on the table 2. And a tailstock 6 that supports the center of the workpiece W in opposition to the headstock 4, and a grindstone shaft 9 through which the rotational force of a grindstone driving motor 10 is transmitted via a belt 11. A grindstone 12 attached to a shaft 9; and a grindstone 7 moving forward and backward by a grindstone motor 8 with respect to the workpiece W. The grindstone 7 is fed into the workpiece W for grinding. Grinding apparatuses are known.

In such a grinding machine, a grindstone correcting device 13 having a grindstone correcting tool 14 such as a diamond roll is installed on the table 2 on the headstock 4 side or on the table 2 behind the tailstock 6. ing.

[0004]

When the grindstone correcting device 13 is installed on the table 2 on the headstock 4 side, it is attached to the rear part of the headstock 4, so that the machine becomes large, and each of the grindstone head 7 and the table 2 The moving stroke becomes longer and the dressing time becomes longer. Further, when the grindstone correcting device 13 is installed on the table 2 behind the tailstock 6, there is a problem that the table stroke becomes longer than when the grindstone correcting device 13 is provided on the headstock 4.

There is also a technique in which a grinding wheel correction tool 14 is provided coaxially with the rotation axis of the headstock 4 and the rotation of the spindle motor 5 of the headstock 4 is used to rotate the grinding wheel correction tool 14.
In this case, the grindstone correction tool 14 is rotated, to rotate simultaneously the workpiece, the influence of the unbalance of the workpiece
The grinding wheel correction surface becomes uneven. In addition, for whetstone correction
Requires high-speed rotation, but the workpiece is also
If this is done, the work may jump out, which is extremely dangerous.
For these reasons, there is a problem that the work W must be removed when the grindstone 12 is corrected.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and the feature of the present invention is that the headstock and the tailstock which oppose each other are provided. In a grinding apparatus that advances a ram supported to be able to advance and retreat to a press table to support a work center, and feeds a grindstone table to the work and performs grinding with a grindstone,
The sleeve is coaxial with the ram around the outer periphery of the ram and the axis of the ram.
This sleeve is fixed to the tailstock while allowing
A grindstone correction tool is rotatably supported coaxially with the ram on the outer periphery of the ram, and a grindstone correction tool drive motor for rotating the grindstone correction tool is installed on the tailstock.

[0007]

According to the above arrangement, the grinding wheel can be corrected by a short table stroke that makes the tailstock correspond to the grinding wheel. Also, is the grindstone correction tool coaxial with the ram
Three fixed to the tailstock to allow axial movement of the ram
Rotatably supported by the grindstone correction tool drive motor to the outer periphery of the probe
The work is affected by the work even when the work is center supported between the headstock and tailstock
Enables whetstone correction without the need. Further, the sleeve
Grinding wheel correction tools supported by
To improve grinding wheel correction accuracy.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a bed on which a table 2 is mounted so as to be movable in the left-right direction by a table feed motor 3. A headstock 4 and a tailstock 6 are provided on the table 2 so as to face each other. W is a workpiece supported at the center between the headstock 4 and the tailstock 6, and 5 is a spindle motor.

Further, a wheel head 7 is mounted on the bed 1 by a wheel head motor 8 so as to be able to advance and retreat in a direction perpendicular to the axis of the workpiece W. A grinding wheel shaft 9 is rotatably supported on the grinding wheel stand 7 around an axis parallel to the axis of the workpiece W.
The other end is transmitted to the other end by a grinding wheel driving motor 10 and a belt 11 installed on a grinding wheel table 7.

The present invention is such that the tailstock 6 is provided with a grindstone correcting device 19 in the above-mentioned grinding apparatus.
A specific embodiment of this will be described below with reference to FIG.

In FIG. 2, reference numeral 15 denotes a ram, and a center 16 for supporting a workpiece W is fitted to the tip of the ram. The ram 15 is slidable in the axial direction.
A connecting member 19 is fixed to a rear end of the connecting member 19.

Reference numeral 17 denotes a ram advancing / retracting cylinder formed on the tailstock 6.
8 is slidably fitted in a direction parallel to the sliding direction of the ram 15. Reference numeral 18a denotes a piston rod integral with the piston 18, and one end of the piston rod
A spring 28 and a nut 27 for adjusting the repelling force of the spring 28 are screwed into the distal end of the connecting member 19.

The sleeve 20 is located outside the front end of the ram 15.
Coaxial with the ram 15 around the circumference and allows the axial movement of the ram 15
The tailstock 6 is fixed to the tailstock 6 . This sleeve 20
A rotatable member 21 is rotatably supported on the outer periphery of the rotatable member via a bearing 22, and a grindstone correcting tool 23 such as a diamond roll is supported on the rotatable member 21 so as to be rotatable coaxially with the ram.
Is held.

A driven gear 24 is formed on the rotating body 21. On the other hand, a motor 25 for driving a grinding wheel correction tool is provided on the tailstock 6, and a driven gear 26 attached to an output shaft of the motor 25 for driving the grinding wheel correction tool meshes with the driven gear 24.

Since the present invention has the structure described above, the tailstock 6 supports the workpiece W at the center with the headstock 4. At this time, the ram 1 slides in the sleeve 20 fixed to the front end face of the tailstock 6 and moves forward and backward.

When the grindstone 12 is to be corrected, the table 2 is moved so that the grindstone correction tool 23 positions the tailstock 6 at a position corresponding to the grindstone 12, and the grindstone correction tool driving motor 25 is operated. The rotating body 21 is rotated by the driving gear 26 via the driven gear 24. Thereby, the grinding wheel correction tool 2
Reference numeral 3 denotes an outer periphery of a sleeve 20 fixed to the tailstock 6, which rotates at a high speed necessary for correcting the grinding wheel around the axis of the arm 15, thereby correcting the grinding wheel 12. At this time, the headstock 4 and tailstock 6
The grinding wheel correction tool 23 rotates independently of the workpiece W even when the workpiece W is supported at the center between the workpiece W and the workpiece W.
It is not affected, so that there is no need to remove the workpiece W.

[0017]

[Effects of the Invention] As described above, according to the present invention, the sleeve
Around the outer periphery of the ram and coaxially with the ram and allowing the ram to move in the axial direction.
And fix it to the tailstock, and fix the grindstone on the outer circumference of this sleeve.
A tool is rotatably supported coaxially with the ram.
A motor to drive the grinding wheel to rotate the correction tool
Because it is a configuration installed on the press table, in correcting the grindstone of the grindstone table, the table on which the tailstock is placed can be positioned in a short stroke with the grindstone correction tool facing the grindstone of the grindstone table. In addition, the size of the grinding device can be reduced.

Also, when correcting the grinding wheel, the work
Workpiece is center supported between the headstock and tailstock to prevent rotation
Even if you go in a state where it has been
In addition, the whetstone is fixed on the sleeve fixed to the tailstock.
Since the tool is installed, the support rigidity of the grinding wheel
Large, accurate grinding wheel correction is possible.

[Brief description of the drawings]

FIG. 1 is a plan view of a grinding machine equipped with the present invention.

FIG. 2 is a sectional view of the present invention.

FIG. 3 is a plan view of a grinding device equipped with a conventional grindstone correction device.

[Explanation of symbols]

 Reference Signs List 1 bed 2 table 4 headstock 6 tailstock 7 grindstone 12 grindstone 15 ram 19 grindstone correction device 20 sleeve 21 rotating body 23 grindstone correction tool 24 driven gear 25 grindstone correction tool drive motor 26 drive gear

Claims (1)

(57) [Scope of request for utility model registration] 1. A turret having a headstock and a tailstock opposed to each other, and a ram supported so as to be able to advance and retreat on the tailstock is moved forward to support a workpiece at a center. In a grinding machine for feeding and grinding with a grindstone, the sleeve is coaxial with the ram on the outer periphery of the ram and the axis of the ram.
This sleeve is fixed to the tailstock while allowing
Equipped with a grindstone correcting device, characterized in that a grindstone correcting tool is rotatably supported on the outer periphery of the ram coaxially with the ram, and a grindstone correcting tool driving motor that rotationally drives the grindstone correcting tool is installed on the tailstock. Grinding machine.