JPH05261653A - Grinding attachment for hourglass-barrel workpiece - Google Patents

Abstract

PURPOSE:To grind a hourglass-barrel rotating workpiece accurately by grinding it with an abrasive wheel, whose turning shaft is vertical, being shiftable as rotating along a surface of the workpiece in all directions within a horizontal surface. CONSTITUTION:An abrasive wheel 6, being vertical with a shaft center 13 of an hourglass workpiece 2, and having a tuning center 12 installed in a proper distance away from the shaft center 13 of the workpiece 2 is rotated by a rotative driving means 7. In addition, this abrasive wheel 6 is traveled along a surface of the workpiece 2 in all directions within the horizontal surface in relation to the shaft center 13 of the workpiece 2. With this constitution, a contact state between the workpiece 2 and the abrasive wheel 6 is always made constant, greatly improving the extent of abrasive finishing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum-and-barrel-shaped polishing device.

[0002]

2. Description of the Related Art Conventionally, polishing of a drum-and-barrel-shaped rotating body has been performed as shown in FIG. 4A.
Alternatively, as shown in FIG. 4B, a polishing grindstone having a rotation center 16 that is parallel to the axis 13 of the object to be polished 2 and that moves in the same plane moves along a locus 15.

[0003]

However, in this method, since the grindstone has a width, the contact position with the grindstone changes near the both ends and the central part of the object to be polished 2, so that the finished state is not constant, and There is a drawback that it is difficult to control the trajectory of the grinding wheel.

[0004]

SUMMARY OF THE INVENTION Therefore, in order to solve the above-mentioned problems, the present invention has a rotation axis perpendicular to the rotation axis of an object to be polished, and the surface of the object to be polished is front, rear, left and right in a horizontal plane. It is configured such that it is polished by a polishing grindstone that is movable while rotating along.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 is a polishing apparatus body, and 2 is an object to be polished. The object to be polished 2 is supported by a pair of supporting means 3 and 4 on an axial end portion of the object to be polished 2 which is concentric with the axis 13 of the object to be polished, and the object to be polished 2 is supported by a rotational force of the rotation driving means 5. It is configured to rotate by being transmitted via.

Further, the grinding wheel 6 having a rotation center 12 which is provided perpendicularly to the axis of the object to be polished 2 and at an appropriate distance from the axis 13 of the object to be polished 2 is driven by the rotation driving means 7. It is designed to rotate. This can be moved to an arbitrary position by a linear guide 8 and a movement driving means 9 (motor or the like) installed in a direction perpendicular to the axis of the object to be polished 2, and these can be further moved to the axis of the object to be polished. The linear guide 10 and the movement driving means 11 (motor or the like) installed parallel to the direction can move to any position. Further, the movement driving means 9 and the movement driving means 11 can move the grinding wheel along an arbitrary curve by a cooperative method such as NC control.

[0007]

As shown in FIGS. 2A and 2B, the object to be polished 2
Since the contact state between the grinding wheel 6 and the polishing wheel 6 is always constant and does not change,
The polishing finish is remarkably improved as compared with the conventional example.

[Brief description of drawings]

1A and 1B are external views showing an object to be polished and a polishing state according to the present invention.

2 (A) and 2 (B) are cross-sectional views showing the movement locus of the polishing grindstone of the present invention.

FIG. 3 one embodiment of the device according to the invention

4 (A) and (B) are cross-sectional views showing an operation locus of a conventional grinding wheel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Polishing object 3, 4 Supporting means for polishing object 5 Rotation driving means for polishing object 6 Polishing grindstone 7 Rotating driving means for polishing grindstone 8 Linear guide 9 Moving drive means 10 Linear guide 11 Moving drive means 12 Rotational axis of polishing grindstone of the invention 13 Shaft axis (center axis) of object to be polished 14 Curve of polishing surface of object to be polished 15 Movement locus curve of polishing grindstone 16 Rotary axis of conventional grinding wheel

Claims (1)

[Claims] 1. Polishing in which the rotation axis is perpendicular to the rotating axis of the rotating hourglass-shaped or barrel-shaped object to be polished and is movable along the surface of the object to be polished in the front, rear, left, and right directions in a horizontal plane. A drum-and-barrel-shaped body polishing device characterized by polishing with a whetstone.