JP4514310B2 - Horizontal machine tool column device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a column apparatus that horizontally supports a spindle head on one side of a column and moves it in a vertical Y-axis direction and a longitudinal Z-axis direction in a horizontal machine tool.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a horizontal machine tool, a column apparatus that horizontally supports a main spindle head on one side of a column is configured as shown in FIG. That is, two X-axis guide rails 3 and 4 are laid on the upper surface of the bed 1, and a column 5 is mounted on the bed movably in the left and right X-axis directions and is moved by an X-axis feed motor (not shown). The On one side surface 5A of the column 5, two Y-axis guide rails 6 and 7 are laid in the vertical Y-axis direction, and the saddle 8 is supported so as to be movable up and down, and a Y-axis feed motor YM and a feed screw are supported. 9, the vertical position is controlled. The saddle 8 is provided with two Z-axis guide rails 10 and 11 laid in the front-rear Z-axis direction, and a main spindle head 15 having a main spindle 17 is supported in a horizontal posture. The position of the spindle head is controlled in the front-rear Z-axis direction by a Z-axis feed motor (not shown). With the above configuration, the column device 30 of the horizontal machine tool 20 is formed. A Y-axis center of gravity G acts at an intermediate position between the saddle 8 and the spindle head 15.
[0003]
According to the column device 30 of the horizontal machine tool 20, the spindle head 15 protrudes largely in the X-axis lateral direction (left side in the figure) from the column side surface 5A. For this reason, the spindle center position OO has a large offset amount (deviation amount) S from the column center position O1, and the mounting position of the jig or workpiece is changed from the center position of the bed 1 to the position greatly moved to the left side. Must. Therefore, (1) the width dimension in the X-axis direction of the bed becomes long, which is not suitable as a line-compatible machine for arranging a plurality of machine tools. {Circle around (2)} Since the Y-axis center of gravity G of the spindle head is displaced to one side (spindle side) of the column and the column weight is large, the column cannot be moved at high speed. There are many problems.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the problems found in the column device of the conventional horizontal machine tool. An object of the present invention is to provide a column device for a horizontal machine tool in which the column is made compact and the machine width is reduced by minimizing the offset amount of the spindle from the column.
[0005]
[Means for Solving the Problems]
In the column machine for a horizontal machine tool according to the first aspect of the present invention, a hollow box-shaped column is mounted on the upper surface of the bed, and the saddle is moved up and down on a guide rail in the vertical Y-axis direction laid on one side of the column. The spindle head is supported on the saddle on a guide rail laid in the front-rear Z-axis direction in a horizontal posture, and the spindle head is arranged such that the tip end side of the spindle protrudes from the opening to the outside. The position is controlled in the front-rear and up-down directions.
[0006]
The column device for a horizontal machine tool according to claim 2 is the column device for a horizontal machine tool according to claim 1, wherein the column is mounted on a guide rail laid on the upper surface of the bed so as to be movable in the X-axis direction. It is characterized by.
[0007]
[Action]
According to the first aspect, a hollow box-shaped column is mounted on the upper surface of the bed, and the saddle can be moved up and down on a guide rail in the vertical Y-axis direction laid on one side surface (inner wall surface) of the column. The spindle head is supported in a horizontal posture on the guide rails in the front-rear Z-axis direction laid on the saddle.
[0008]
As a result, the distance (offset amount) from the center position of the column left-right width to the rotation center position of the main shaft is narrowed to about a quarter of that of the conventional column. Thus, the width of the bed in the X-axis direction can be reduced, and the bed is suitable as a line-compatible machine for arranging a plurality of machine tools. Further, since the Y-axis center of gravity G of the spindle head almost coincides with the vicinity of the center position of the column, and the column weight is light with a box-type structure, the column can be moved at high speed. Furthermore, the space facing the outer surface of the spindle head is wide, and this portion is excellent in maintainability.
[0009]
According to claim 2, in the column device of the horizontal machine tool according to claim 1, the column is mounted on the guide rail laid on the upper surface of the bed so as to be movable in the X-axis direction. It can move to the maximum in the X-axis direction and can process large workpieces.
[0010]
Thus, machining of large workpieces can be performed efficiently with a horizontal machine tool that is smaller than a conventional horizontal machine tool.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to embodiments shown in the drawings. 1 and 2, the horizontal machine tool 40 has two X-axis guide rails 3 and 4 laid on the upper surface of the bed 1. A hollow box-shaped column 51 is mounted on the X-axis guide rails 3 and 4 so as to be movable in the left and right X-axis directions, and is moved by an X-axis feed motor (not shown). The column 51 includes a main wall column 51B, a sub-wall column 51C, a base 51E that connects the bases of the wall columns 51B and 51C, and a top plate that connects the tops of the wall columns 51B and 51C. It consists of a portion 51D and a front window 51F and a rear window 51G formed by opening the front wall and the rear wall. On one side 51A of the main wall column 51B in the column 51, two Y-axis guide rails 6 and 7 are laid in the vertical Y-axis direction, and the saddle 8 is supported so as to move up and down. The vertical position is controlled by the motor YM and the feed screw 9. The saddle 8 is provided with two Z-axis guide rails 10 and 11 laid in the front-rear Z-axis direction, and a main spindle head 15 having a main spindle 17 is supported in a horizontal posture. The position of the spindle head is controlled in the front-rear Z-axis direction by a Z-axis feed motor (not shown). With the above configuration, the column device 50 of the horizontal machine tool 40 is formed.
[0012]
A Y-axis center of gravity G acts at an intermediate position between the saddle 8 and the spindle head 15. In the spindle head 15 of the horizontal machine tool 40, the spindle center position O approaches the column center position O1, and the Y-axis center of gravity G overlaps with one. Thereby, the offset amount (deviation amount) S of both members becomes very small, the column and the spindle head 15 are balanced, and the mounting position of the jig and the workpiece can be arranged near the center of the bed.
[0013]
The embodiment of the present invention is configured as described above, and operates as follows. According to the head device 50 of the horizontal machine tool 40, a hollow box-shaped column 51 is mounted on the upper surface of the bed, and guide rails 6 in the vertical Y-axis direction are laid on one side (inner wall surface) 51A of this column. 7, the saddle 8 is supported so as to be movable up and down, and the spindle head 15 is supported in a horizontal posture on the front and rear Z-axis guide rails 10 and 11 laid on the saddle.
[0014]
As a result, the distance (offset amount) S from the center position 01 of the column left-right width to the rotation center position 0 of the main shaft 17 is narrowed to about a quarter of that of the conventional column. Therefore, the width dimension in the X-axis direction of the bed 1 can be reduced, which is suitable as a line-compatible machine in which a plurality of machine tools are arranged. In addition, the Y-axis center of gravity G of the spindle head 15 substantially coincides with the vicinity of the center position 01 of the column 51, and the column weight is light due to the box structure, so that the column can be moved at high speed. Furthermore, the space facing the outer surface of the spindle head 15 is wide, and this portion is also excellent in maintainability.
[0015]
The column 51 is mounted on the guide rails 3 and 4 laid on the upper surface of the bed so as to be movable in the X-axis direction, so that the column can be moved to the maximum in the X-axis direction near both ends of the bed width, Capable of machining large workpieces.
[0016]
The present invention is not limited to the above-described embodiment. For example, the column 51 may be a machine tool of a type in which the guide rails 3 and 4 laid on the upper surface of the bed are omitted and fixed directly on the bed and are immovably mounted in the X-axis direction. In this embodiment, since the column 51 is stationary, the machine width and the column width can be compressed to the minimum, and it is optimal as a line-compatible machine for arranging a plurality of machine tools.
[0017]
【The invention's effect】
According to claim 1, a hollow box-shaped column is mounted on the upper surface of the bed, and the saddle is supported on the upper and lower Y-axis guide rails laid on one side surface (inner wall surface) of the column so as to be movable up and down. At the same time, the spindle head is supported in a horizontal position on the front and rear Z-axis guide rails laid on this saddle, so the distance (offset amount) from the center position of the column left and right width to the rotation center position of the spindle is the conventional type. It can be narrowed to about a quarter of this column.
[0018]
Thus, the width dimension in the X-axis direction of the bed can be reduced, and it is suitable as a line-compatible machine for arranging a plurality of machine tools, and the Y-axis center of gravity of the spindle head is almost coincident with the column near the center position. In addition, the column weight is light with a box-type structure, and the column can be moved at high speed. Furthermore, since the space facing the outer surface of the spindle head is wide, this portion is excellent in maintainability.
[0019]
According to the second aspect, since the column is mounted on the guide rail laid on the upper surface of the bed so as to be movable in the X-axis direction, the column can be moved to the maximum in the X-axis direction close to the bed width. Large workpieces can be processed efficiently with a horizontal machine tool that is smaller than horizontal machine tools.
[Brief description of the drawings]
FIG. 1 is a front view of a horizontal machine tool according to the present invention.
FIG. 2 is a perspective view of a column as a main part of the present invention.
FIG. 3 is a front view of a conventional horizontal machine tool.
[Explanation of symbols]
1 Bed 3, 4 X-axis guide rail 6, 7 Y-axis guide rail 8 Saddle 9 Feed screw 10, 11 Z-axis guide rail 15 Spindle head 17 Spindle 40 Horizontal machine tool 50 Column device 51 Column 51A Single side 51B Main wall pillar 51C Sub-wall column 51D Top plate part 51E Base part 51F Front window 51G Rear window G Y-axis center of gravity O Spindle center position O1 Column center position S Offset amount (deviation amount)

Claims (2)

A hollow box-shaped column is mounted on the upper surface of the bed, and a saddle is supported on a vertical Y-axis guide rail laid on one side of the column so that the saddle can be moved up and down. A horizontal type characterized in that the spindle head is supported in a horizontal posture on the laid guide rail, and further, the spindle head is arranged such that the tip end side of the spindle protrudes from the opening to the outside, and the position is controlled in the front-rear and vertical directions. Column device for machine tools. The column apparatus for a horizontal machine tool according to claim 1, wherein the column is mounted on a guide rail laid on the upper surface of the bed so as to be movable in the X-axis direction.

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