JPH04111701A - Numerically controlled lathe - Google Patents

Abstract

PURPOSE:To shorten a size of a lathe in the width direction and make the lathe a small scale by arranging an axial line of a spindle head vertically, and also arranging the movable direction of a column unit in parallel with the center line of a bed. CONSTITUTION:A bed 1 is symmetrical to the center line, a headstock unit 3 is arranged in the center position, a main spindle 4 is vertically arranged, and a chuck 6 is attached to the upper end part of the main spindle 4. With the headstock unit 3 between an operator and his opposite side, a column unit 7 is installed on his opposite side, movably supported in an X direction, reciprocation-driven by a feed motor 8, and a turret tool post unit 9 is movably supported in a Z direction and reciprocation-driven by a motor 10. Moreover, since an NC controlling unit and a hydraulic power unit are arranged in both side vacant spaces of the column unit 7, there is no machine operating part on both side faces that brings maintenance free. By adjoining plural numbers of NC lathes and juxtaposing workpiece transport conveyors, the total length of a manufacturing line can be shortened.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a vertical NC lathe for machine tools.

<Conventional technology> FIG. 5 shows a conventional NC lathe.

As shown in FIG. 5, a headstock unit 103 having a main shaft 102 is mounted on a flat bed 101 so that its axis is horizontal. Then, the main shaft 102
A chuck 105 having chuck claws 104 is attached to one end of the chuck.

Further, a carriage unit 106 is mounted on the bed 101 so as to be movable in the Z-axis direction, which is a direction parallel to the axis of the main shaft 102 .

On this carriage unit 106 is a lateral feed unit 107.
is attached so as to be movable in the X-axis direction perpendicular to the Z-axis direction.

The turret tool post unit 10 is installed in the horizontal feed unit 107.
A turret 110 holding a plurality of tools 109 is attached to the turret tool rest unit 108 so as to be rotatable and indexable.

Note that the carriage unit 106 and the lateral feed unit 107
Each has a positioning mechanism (not shown). Further, in FIG. 5, 111 is an NC control unit, and 112 is a hydraulic power unit.

The operator 113 grips the workpiece using the chuck 105 of the main spindle 102, and rotates the main spindle +02 to give rotational motion to the workpiece.

Then, the carriage unit 106 and the lateral feed unit 10
7 and processes the workpiece using the indexed tool +09.

However, in such conventional NC lathes, the size of the lathe itself in the width direction is determined by the distance moved by the carriage unit 106 and the cross feed unit 107, and if this distance is set large, the size of the machine increases. This may lead to

For this reason, during this period, as a solution to the problem, the Tokuko Sho 6
A vertical NC lathe has been proposed in Japanese Patent No. 2-13123.

In the vertical NC lathe disclosed in this publication, the axis of the main spindle is arranged along the vertical direction of the machine, and the feeding direction (Z-axis direction) of the tool is also arranged along the vertical direction.

Please refer to the official gazette for details.

Therefore, even if the feeding distance is set to a large value, the size of the machine does not increase, and the arrangement space can be saved.

<Problems to be Solved by the Invention> In the conventional NC lathe described above, space can be saved by configuring the tool to reciprocate along the vertical direction of the lathe itself when feeding the tool in the Z-axis direction. Although shown in the figure, the feed in the X-axis direction is configured so that the operator reciprocates along the left and right horizontal directions of the lathe.

Therefore, it is not possible to save space in the width direction of the NC lathe.
If a manufacturing line is constructed using a large number of NC lathes, the total length of the line will become long. As a result, the range of operation for the operator becomes wider, resulting in heavy labor and a great burden on the operator, as well as a reduction in work efficiency.

Further, since this NC lathe has a complicated structure, there is a problem in that thermal displacement characteristics deteriorate and machining accuracy decreases.

The present invention is intended to solve these problems, and is an NC that is miniaturized and has improved workability and machining accuracy.
The purpose is to provide lathes.

Means for Solving the Problems> To achieve the above object, an NC lathe of the present invention includes a bed, a spindle and a spindle rotation drive mechanism, a spindle head disposed on the bed, and a positioning mechanism. a column unit having a positioning mechanism and supported by the bed so as to be horizontally movable; a turret unit having a positioning mechanism and supported by the column unit so as to be vertically movable and having a turret rotatably indexable; unit and a drive unit, characterized in that the axis of the spindle head is arranged along a vertical direction, and the moving direction of the column unit is arranged parallel to the center line of the bed. It is something.

Further, the NC lathe of the present invention is characterized in that the bed is formed symmetrically with respect to the central axis of the main spindle.

Furthermore, the NC lathe of the present invention is characterized in that no mechanical operation parts are formed on both side surfaces, and that a plurality of machine operation parts can be arranged adjacently.

By arranging the axis of the spindle head along the vertical direction and arranging the moving direction of the column unit parallel to the center line of the bed, the length of the device itself in the width direction is shortened, making the device compact. be converted into

Furthermore, by forming the bed symmetrically with respect to the central axis of the main shaft, thermal deformation of the machine is simplified.

In addition, line arrangement is possible by not forming mechanical operation parts on both side parts and by making it possible to arrange multiple parts adjacent to each other.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIGS. 1 to 3 show an NC lathe according to an embodiment of the present invention,
Figure 4 shows the NC lathe line.

As shown in FIGS. 1 to 3, the bed 1 has a left-right symmetrical shape with respect to the center line where the worker 2 is located, and a headstock unit 3 having a spindle head is arranged at the center position. There is.

This headstock unit 3 has a main shaft 4 and a main shaft rotation drive mechanism (not shown), and the axis of the main shaft 4 is arranged along the vertical direction. A main shaft chuck 6 having a plurality of chuck claws 5 is attached to the upper end of the main shaft 4.

On bed l, worker 2
A column unit 7 is provided on the opposite side and is supported so as to be movable in the front-rear direction parallel to the center line of the bed 1, that is, in the X direction. The feed motor 8 is capable of reciprocating the drive.

A turret tool rest unit 9 is supported on the front surface of the column unit 7 so as to be movable in the vertical direction, that is, in the Z direction. And, it can be driven back and forth by the feeding motor 10.

Further, a turret 11 is rotatably attached to the turret tool post unit 9 by a horizontal shaft (not shown).

This turret 11 can be attached with a plurality of cutting tools 12, and can be selectively indexed according to the cutting process.

In addition, the column unit 7 and the turret turret unit 9
Each has a positioning mechanism (not shown).

Furthermore, an NC control unit 13 and a hydraulic power unit 14 are provided on both sides of the bed 1, respectively.

In the NC lathe of this embodiment, the bed 1 has a symmetrical shape due to this arrangement structure, and the NC control unit 13 and the hydraulic power unit 1 are installed in the empty space on both sides of the column unit 7.
4, the entire structure is symmetrical.

In addition, the NC lathe of this embodiment has no mechanical operation parts on both sides, making it maintenance-free. As shown in FIG. By arranging them, the entire length of the production line can be shortened.

<Effects of the Invention> As described above in detail with reference to Examples, the N of the present invention
According to the C lathe, the axis of the spindle head is arranged vertically, and the moving direction of the column unit is arranged parallel to the center line of the bed, so the length in the width direction of the machine itself is shortened, and the machine can be downsized.

Furthermore, since the bed is formed symmetrically with respect to the central axis of the main spindle, thermal deformation of the machine is simplified, and the correction method for the deformation is simplified, thereby improving machining accuracy.

Furthermore, since there are no mechanical operation parts on either side of the machine, it is maintenance-free, and multiple lathes can be placed next to each other, making it possible to arrange lines with short lengths, shortening the distance that workers have to travel, and making work easier. Efficiency and workability can be improved.

[Brief explanation of drawings]

Fig. 1 is a side view of an NC lathe according to an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a front view, Fig. 4 is a plan view of an NC lathe line formed into a line, and Fig. 5 is a plan view of a conventional NC lathe. In the drawings, 1 is a bed, 2 is a worker, 3 is a headstock unit, 4 is a spindle, 7 is a column unit, 9 is a turret tool rest unit, 11 is a turret, 12 is a cutting tool, 13 is an NC control unit, 14 is a hydraulic power unit. Mitsubishi Patent Attorney Application Industrial Stock Figure 4 Figure 5

Claims (3)

[Claims] (1) a bed, a spindle head having a spindle and a spindle rotation drive mechanism and disposed on the bed, and a column unit having a positioning mechanism and supported by the bed so as to be horizontally movable;
In an NC lathe comprising a tool post unit having a positioning mechanism and vertically movably supported by the column unit, and a turret supported rotatably and indexably, an NC control unit, and a drive unit, the spindle head An NC lathe characterized in that the axis of the column unit is arranged along a vertical direction, and the moving direction of the column unit is arranged parallel to the center line of the bed. (2) The NC lathe according to claim (1), wherein the bed is formed symmetrically with respect to the central axis of the main shaft. (3) The NC lathe according to claim (1), characterized in that no mechanical operation parts are formed on both side surfaces, and a plurality of mechanical operation parts can be arranged adjacently.