JPH10277817A - Machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machine tool capable of eliminating the need for a leveling head when leveling of the machine tool is performed, to reduce the number of part items, reduce cost, and improve the workability of installation. SOLUTION: In a slant bed type lathe which is provided with a turret indexing device for rotatably supporting a turret head 8 provided with plural tools K by a tool-post 5, and indexing the turret head 8 so that it can selectively use required tools, a leveling plane 8e' serving as a reference plane at the time when tools are installed on the turret head 8, is provided, and a leveling mode for indexing the turret head at a reference angular position at which the leveling plane is horizontal, is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine tool provided with a turret head having a plurality of tools, and a turret indexing device for indexing the turret head so that required tools can be selectively used. The present invention relates to an improvement of an installation method useful for a slant bed type machine tool.

[0002]

2. Description of the Related Art For example, when a slant bed type lathe is installed in a user's factory, conventionally, as shown in FIG. 4, a level table 100 having an angle α set from a bed slant angle, an index angle of a turret head, and the like is used. A leveling operation for adjusting the leveling surface 100a of the level base 100 so that the leveling surface 100a is mounted horizontally is performed. FIG. 4 is a front view of a turret head portion of the slant bed type lathe.

[0003]

However, in the above-described method for leveling a turret using a conventional level table, it is necessary to prepare a level table for each machine tool in accordance with the shape of each machine tool. There is a problem that the score increases and the cost increases. In addition, it is necessary to attach and detach the level base in the leveling operation, and there is a problem that the installation workability is low accordingly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and eliminates the need for a level table for leveling a machine tool, thereby reducing the number of parts and the cost, and installing the apparatus. It is an object to provide a machine tool capable of improving workability.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a turret head having a plurality of tools is rotatably supported by a tool stand, and the turret indexing the turret head so that a required tool can be selectively used. In a machine tool equipped with a device, a leveling surface serving as a reference surface at the time of installation on the turret head is provided, and a leveling mode for indexing the turret head to a reference angle position at which the leveling surface is horizontal is provided. It is characterized by.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views for explaining a slant bed type lathe according to an embodiment of the present invention, FIG. 1 is a perspective view of the slant bed type lathe, FIG. 2 is a cross-sectional view showing an internal structure of a turret head, FIG. 3 is a front view of the turret head.

In FIG. 1, reference numeral 1 denotes a slant bed type lathe. The lathe 1 has a tailstock 3 movably arranged on the right side of a slant type bed 2 and a headstock 4 on the left side.
This is a schematic structure in which a tool table 5 is arranged on the rear side so as to be movable left and right and forward and backward. The headstock 4 is provided at its tip with a chuck 6 for holding a workpiece (work), and the tailstock 3 is provided with a center 7 for holding the workpiece with the chuck 6. Is provided.

A turret head 8 for holding a plurality of tools K is rotatably mounted on the tool base 5. The turret head 8 and the turret head 8 are provided inside the tool base 5.
Is provided with a turret indexing device 10 for indexing a required tool so that it can be used selectively.

The turret head 8 is substantially disk-shaped, and has holder mounting portions 8d, 8e, 8f for mounting a tool holder at predetermined angular intervals (for example, at every 30 degrees).
Are formed, and are rotatably supported by a turret shaft 8c provided on the tool base 5.

In the turret indexing device 10, the indexing gear 15 is rotated by a drive mechanism (not shown) so that the turret head 8 is moved to the tool base 5 so that the cutting edge of the tool K of any one of the holder mounting portions has a predetermined processing. The rotation angle position is set so as to be positioned at the hour position.

On the left side of the index gear 15 (on the turret head 8 side), an outer peripheral movable side coupling 17A is fixed by a taper pin 15a and a bolt 15b. A fixed-side coupling 16 is coaxially arranged on the shaft center side of the outer-peripheral movable-side coupling 17A.
The facing movable side coupling 17B is disposed so as to face A. During normal processing, a gear portion 16a formed on the end surface of the fixed side coupling 16 and a gear portion 17a formed on the end surface of the outer peripheral movable side coupling 17A
The gear 17b formed on the end face of the facing movable side coupling 17B is meshed with the gear 17b. The outer peripheral movable side coupling 17A is provided with a tapered pin 8a on the turret head 8.
The index gear 15, the outer peripheral movable side coupling 17A and the turret head 8 rotate simultaneously.

The facing movable side coupling 17B functions as a piston disposed in a cylinder 8b formed inside the turret head 8 so as to be slidable left and right in the figure and non-rotatable around the turret shaft 8c. Has become
The facing movable side coupling 17B is provided with the turret head 8.
By supplying hydraulic pressure from a hydraulic pressure supply hole 19 formed inside the gear, the gear part 17b moves rightward in the figure to move the gear part 17b.
a and 16a, and by moving the gears 17b and 17a to the left as shown in FIG.
It is configured so that the engagement with 16a is released. In FIG. 2, the upper part from the turret shaft 8c shows a state where the meshing is released, and the lower part shows a state where the meshing is performed.

The fixed coupling 16 is rotatably supported by the boss 5d of the tool base 5 so as to be coaxial with the turret head 8, and is fixed by a fixing bolt (not shown). 5 is fixed.

Here, the outer surface of the holder mounting portion 8e of the turret head 8 is a leveling surface 8 serving as a reference surface when the lathe 1 of the present embodiment is installed in a user's factory or the like.
e 'is also used. Further, the turret indexing device 10 of the present embodiment employs a servomotor capable of arbitrarily selecting a rotation angle as a drive source, and furthermore, a turret head at a reference angle position where the leveling surface 8e 'is horizontal. A level setting mode for determining 8 is provided.

In this leveling mode, software is enabled or disabled by operating a key on the operation panel. At that time, an indication as to whether the leveling mode is valid or invalid is displayed on the operation screen. In this case, the leveling mode is enabled, and the turret head 8 is pressed so that the leveling surface 8e 'is horizontal by pressing the tool rest turning button.
Is determined at a predetermined position. In this state, arbitrary axis movement is possible, and starting of a program that is not necessary for level setting, rotation of the spindle, rotation of the milling tool, normal turret turning operation, and the like are all prohibited. For safety, a door interlock is provided to prohibit turning of the tool post when the door is opened. Usually, this leveling operation must be performed with the door open in order to visually check the level while moving the axis. Therefore, it is necessary to release the door interlock.

Next, a leveling operation when the lathe 1 of this embodiment is installed in a user's factory or the like will be described. When the leveling mode is selected, hydraulic pressure is supplied from the hydraulic pressure supply hole 18, the facing movable side coupling 17B moves leftward, and the engagement with the fixed side coupling 16 and the outer peripheral movable side coupling 17A is separated. , The turret head 8 can be rotated. Subsequently, the turret head 8 is indexed to the reference angle position by the servomotor via the index gear 15, and clamped by hydraulic pressure. As a result, the leveling surface 8e 'is in a levelable state. In this state, a level is placed on the leveling surface 8e ', and the level is set to be horizontal. In this case, unclamping may be performed without clamping.

In the normal indexing operation, the hydraulic pressure is supplied from the hydraulic pressure supply hole 18, and the facing movable side coupling 17B moves leftward to disengage with the fixed side coupling 16 and the outer peripheral movable side coupling 17A. , The turret head 8 can be rotated. Subsequently, the turret head 8 is indexed to a required angular position during machining by the servomotor via the index gear 15, and
8, the supply of hydraulic pressure is stopped, and hydraulic pressure is supplied from the hydraulic supply hole 19, whereby the facing movable side coupling 17B moves rightward and meshes with the fixed side coupling 16 and the outer peripheral movable side coupling 17A. The required tool is indexed and fixed.

When the indexing to the normal machining position is performed, the outer surfaces of the holder mounting portions are inclined without being horizontal (see FIG. 4), and the outer surfaces are turned to rotate. No chips are accumulated on the surface.

As described above, in this embodiment, the outer surface of the holder mounting portion 8e of the turret head 8 is also used as the leveling surface 8e ', and the turret head 8 is set so that the leveling surface 8e' is horizontal. Since the leveling mode for indexing to the reference angle position is provided, it is not necessary to provide a level base for each machine in order to perform leveling at the time of machine installation, and it is possible to reduce the number of parts and cost. In addition, in the leveling operation, it is not necessary to attach and detach the level base, so that the labor for the installation operation can be reduced, and the workability is improved.

In the above embodiment, the outer surface of the holder mounting portion 8e of the turret head 8 is used as the leveling surface 8
If there is no space to place a level with a small machine or the like, place a plate on the leveling surface 8e '
A level may be placed on the upper surface of this plate.

Further, a plate can be arranged with the lower surface of the turret head 8 as a leveling surface 8e '', and a level can be placed on the upper surface of the plate. It is also possible to form them separately.

In the above embodiment, the case of the slant bed type lathe has been described. However, the scope of the present invention is not limited to this, and the point is that the turret head and the turret head are indexed at an arbitrary angle. The present invention can be applied to any machine tool as long as it has a turret indexing device capable of performing the above operations.

[0023]

As described above, according to the machine tool of the present invention, the turret head is provided with the leveling surface serving as a reference surface at the time of installation, and the turret head is set at the reference angle at which the leveling surface is horizontal. Since a leveling mode for indexing to the position is provided, in the leveling operation, by selecting the leveling mode, the level is set using the leveling surface or using the plate placed on the leveling surface. It is possible to perform the mounting operation, and it is possible to eliminate the need for the conventional level base, to reduce the number of parts and cost, and to improve the installation workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a slant bed type lathe according to an embodiment of the present invention.

FIG. 2 is a sectional view showing an internal structure of a turret head of the lathe.

FIG. 3 is a front view of a turret head of the lathe.

FIG. 4 is a front view of a turret head for explaining a conventional leveling operation.

[Explanation of symbols]

 Reference Signs List 1 lathe (machine tool) 5 tool stand 8 turret head 8e ', 8e "leveling surface 10 turret indexing device K tool

Claims (1)

[Claims] 1. A machine tool comprising: a turret head having a plurality of tools rotatably supported by a tool table; and a turret indexing device for indexing the turret head so that required tools can be selectively used. A machine tool, comprising: a leveling surface serving as a reference surface when the turret head is installed; and a leveling mode for indexing the turret head to a reference angle position at which the leveling surface is horizontal.