JPH0632241Y2 - Multi-tasking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a multi-tasking machine, and more particularly to a turning center.

[Conventional technology]

Conventionally, a turning center is used when performing various processes on a rod-shaped work. As shown in FIG. 4, the turning center generally includes a headstock 1 for rotatably holding a main spindle, a turret base 2 arranged laterally in the direction perpendicular to the centerline of the main spindle, and It has a tool base 3 (or a turret base) arranged so as to face two turrets.

A bar-shaped work is held on the headstock 1 by penetrating the inside of the main shaft. This work is the turret stand 2
Various processing such as balance cut processing is performed by a predetermined tool among the tools held by the tool and a tool held by the tool base 3.

[Problems to be solved by the device]

In the conventional turning center as described above, both the turret table 2 and the tool table 3 are placed on the same plane (for example, a horizontal plane) of the bed 4, the Z-axis direction along the center line of the main axis, and the bed 4 of the bed 4. It is configured to be movable in the X axis direction orthogonal to the Z axis in a plane parallel to the mounting surface. Then, the workpieces are processed by moving the respective tables 2 and 3 within this plane.

However, in the conventional turning center as described above,
The turret table 2 and the tool table 3 cannot move in the Y-axis direction (for example, the vertical direction) orthogonal to the Z-axis and the X-axis. This is because the turret table 2 and the tool table 3 are placed on the same surface of the bed 4 as described above, but the machining method is limited due to the inability to move in the Y-axis direction. Will be done. For example, in the product as shown in FIG. 5, when it is desired to process the surface A, it cannot be processed with a normal standard spindle, and it is necessary to provide a dedicated spindle.

Therefore, it has been proposed that a tool base movable in the Y-axis direction is separately installed in the vicinity of the conventional turning center as shown in FIG. 4, but this makes the workability poor. There will be problems such as In particular, at the present time when it is desired to automatically and efficiently perform high-mix low-volume production, one turning center that can move in the X-, Y-, and Z-axis directions does not require a special spindle. There is a demand for a compound processing machine that can perform various types of processing.

The present invention has been made in view of the above point, and one of two tool rests arranged so as to face each other in front of the main spindle is one that is movable in all three axial directions of X, Y, and Z. The purpose is to obtain a processing machine.

[Means for Solving the Problems]

A multi-tasking machine according to the present invention includes a headstock that rotatably holds a spindle, a bed that has a first surface and a second surface that are orthogonal to each other and are inclined with respect to a horizontal plane, and a first tool. It has a table and a second tool table. The first tool rest is arranged on one side with respect to the center line of the spindle, and in a plane parallel to the first surface of the bed, a Z-axis direction parallel to the spindle center line and an X orthogonal to the Z-axis. It is mounted on the first surface so as to be movable in the axial direction. The second tool base is arranged on the other side with respect to the center line of the main shaft, and is mounted on the second surface so as to be movable in the Z axis, the X axis, and the Y axis direction orthogonal to both of these axes. .

[Action]

In this invention, instead of mounting two tool bases on one surface of the bed as in the conventional device, each tool base is mounted on the first and second surfaces formed on the bed and orthogonal to each other. Since one tool rest can be moved in a plane orthogonal to the plane in which the other tool rest moves, the one tool rest can be moved in all three X, Y, and Z directions. It is possible to move, and it is possible to easily perform more kinds of machining as compared with the conventional multi-tasking machine.

Further, in the present invention, since the second surface is orthogonal to the first surface and the second tool rest is arranged on this second surface, it is possible to move the second tool rest in the Y-axis direction. It is easy to secure a space for arranging the mechanism.

Furthermore, since the first surface and the second surface are each formed as an inclined surface, the chips and the coolant flow down well on either surface.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a turning center as a multi-tasking machine according to an embodiment of the present invention, and FIG. 2 is a side view of the turning center viewed from the right side (hereinafter, this direction is referred to as the front) in the figure. Is. 1 and 2, the turning center is composed of a headstock 10 and a turret base 20 arranged in front of the headstock 10 so as to face each other so as to sandwich the centerline of the spindle 12.
It has a (first tool stand) and a tool stand (second tool stand) 30, and the turret stand 20 and the tool stand 30 are supported by a bed 40.

The headstock 10 is mounted and fixed on a support base 11 that is positioned and fixed on the bed 40, and a work can be inserted from the rear thereof. Also, this headstock 1
A spindle 12 is rotatably held on the spindle 0.
The work inserted from the rear penetrates through the inside of 2, and the work is held by the chuck 13 provided at the front end of the main shaft 12. Further headstock 10
A spindle motor 14 is provided at the rear of the spindle 1 and is connected to the spindle 12 by a transmission member such as a belt (not shown).
2 is rotated at high speed. Similarly, behind the headstock 10, there is provided an angle indexing motor 15 for indexing the angle of the workpiece when the workpiece is fixed and processed.

As shown in the side view of FIG. 2, the bed 40 has a first surface 41 inclined by a predetermined angle θ ₁ (about 60 °) with respect to a horizontal plane, and a second surface 41 orthogonal to the first surface 41. Surface 42 (inclined by θ ₂ (about 30 °) with respect to the horizontal plane). Then, the turret base 2 is attached to the first surface 41.
0 is placed, and the turret table 20 is movable along the Z-axis linear guides Z ₁ and Z ₂ in the spindle centerline direction (hereinafter, referred to as the Z-axis direction). Then, in order to move the turret table 20 in the Z-axis direction, the Z-axis motor 2
1 and a moving mechanism composed of a ball screw 22 and the like that rotates by this.

The turret base 20 is provided with a turret 23 having an axis parallel to the center line of the main shaft. The turret 23 holds various tools and is rotated by a tool indexing motor (not shown). It is possible. Also,
As shown in FIG. 1, the turret table 20 includes the first turret table 20 along the X-axis linear guides X ₁ and X ₂ .
Is movable in a direction (hereinafter, referred to as an X-axis direction) orthogonal to the Z axis in a plane parallel to the surface 41 of the X axis motor 24 and a ball screw or the like in order to drive in this direction. A moving mechanism is provided.

Further, the tool table 30 is provided on the second surface 42 of the bed 40.
Is mounted on the turret table 20.
It faces the turret 23. Like the turret table 20, the tool table 30 is movable in the Z axis direction along the Z axis linear guides Z ₃ and Z ₄ (see FIG. 2) provided between the tool table 30 and the bed 40. In order to drive in this direction, a moving mechanism including a Z-axis motor 32 (see FIG. 1) and a ball screw is provided.

Further, the tool base 30 has the same X-shape as the turret base 20.
It has linear guides for axes X ₃ , X ₄ , an X-axis motor 33, a ball screw 34, etc., and is movable in the X-axis direction. Further, as shown in FIG. 2, the tool base 30 has Y-axis linear guides Y ₁ and Y ₂ and is moved by a moving mechanism including a Y-axis motor 35, a ball screw 36, and the like to move the X-axis. , Z-axis is also movable in the Y-axis direction orthogonal to both axes. Further, the tool holding portion 31 of the tool base 30 is configured to be rotatable in a direction indicated by an arrow B in FIG. 1 (hereinafter referred to as a B-axis direction), and a B-axis motor 37 and a gear mechanism ( (Not shown) and the like are provided. The motor 38 shown in FIG. 2 is for rotating the tool held by the tool holding portion 31.

Here, as shown in FIG. 2, the turret base 20 is arranged such that its center of gravity is located inside the Z-axis linear guide Z ₂ , and thus the outer linear guide Z ₂ is not much loaded. It is taken into consideration so that it will not occur.

Next, the processing operation will be described.

As mentioned above, when machining, the work is
0 is inserted from the rear, and the work is held by the chuck 13 fixed to the main shaft 12. When performing lathe processing or the like, the spindle 12 is driven to rotate by the spindle motor 14, and the turret table 20 and the tool table 30 are moved in the respective directions along the respective linear guides by the respective moving mechanisms to move the turret 23. Also, processing is performed using the tool of the tool holding unit 31.

In addition, when machining a hole in the X-axis direction or the like for the work, the rotation of the spindle 12 is stopped, and the work is performed by a drill tool or the like mounted on the tool holding portion 31 of the tool base 30.

The operation will be described below with reference to a specific processing example.

FIG. 3 (a) shows a bite tool 20 a of the turret 23 and a bite tool 30 a of the tool head portion 31 for the work 5.
Shows the case of performing balance cut processing from the opposite sides by using. In this case, the main shaft 12 is rotated to rotate the work 5, and at the same time, the respective tables 20 and 30 are rotated.
Are moved by respective moving mechanisms and linear guides, and machining is performed while moving the respective bite tools 20a and 30a in the X-axis and Z-axis directions.

(B) to (d) of the same figure show the case where the work 5 is perforated. At the time of drilling these holes, the rotation of the main shaft 12, that is, the rotation of the work 5 is stopped to perform the drilling. The angle of the workpiece 5 at this time is indexed by the angle indexing motor 15. In the same figure (b), as described above, the work 5 is stopped at a predetermined angle by the angle indexing motor 15, the tool base 30 is moved in the Z-axis direction for positioning, and the drill tool 30b is moved to the motor 38 (second). (Refer to the drawing) and move in the X-axis direction while rotating to perforate.

Further, in the same figure (c), the work 5 is fixed at a predetermined angular position in the same manner as described above, and the tool holding portion 31 of the tool base 30 is
From the angular position of FIG. 3 (b) by the shaft motor 37, 90
° Rotate. In this state, the drill tool 30b is moved for positioning in the X-axis direction, and is moved in the Z-axis direction while rotating the drill tool 30b to perform the drilling process.

Further, FIG. 3D shows a case where slant hole processing is performed on the fixed work 5. Also in this case, similarly to the above, the drill tool 30b of the tool base 30 is rotated by a predetermined angle in the B-axis direction to perform positioning, and the drill tool 30b is rotated and simultaneously drilled while moving in the X-axis and Z-axis directions. Perform processing.

Further, FIG. 7E shows a case where the work 5 is square grooved. In this case, the work 5 is fixed at a predetermined angular position in the same manner as described above, and the groove cutting tool 3 of the tool base 30 is fixed.
Positioning is performed by moving 0c in the X-axis and Z-axis directions.
Then, the groove cutting tool 30c is rotated and moved in the Y-axis direction to process the square groove.

In this embodiment, since the bed 40 is formed with the first and second surfaces 41 and 42 which are orthogonal to each other, a space is formed in the direction orthogonal to the first surface, and the space is utilized. The tool base 30 placed on the second surface 42 can be moved in the Y-axis direction. Therefore, the tool base 30 provided so as to face the turret base 20 can be moved in all directions of three axes of X, Y, and Z, and more types can be provided as compared with the conventional processing machine. Can be easily processed.

Further, a dovetail groove is used as the movement guide of the conventional processing machine, but the present invention does not require much machining accuracy as compared with the conventional dovetail groove, and the linear guide for light load has a simple structure. The bed 40 is formed so as to be used. That is, the turret table 20 is about 60 degrees above the horizontal plane.
While being placed on the inclined surface 41, the center of gravity is set so that its weight does not bear on the outer Z-axis linear guide Z ₂ , and the heavy tool base 30 has a relatively gentle inclination ( Since it is placed on the surface 42 (about 30 ° with respect to the horizontal plane), it is possible to use the above-mentioned linear guide that does not require precision machining as a guide means for movement.

Further, due to the bed shape as described above, the discharge property of chips due to processing is good, and the chips accumulated on each tool base can be reduced.

Further, since the tool holder 30 of the tool base 30 is configured to be rotatable, the range of machining methods that can be performed by this turning center is extremely wide, and the efficiency of machining and production is remarkably higher than that of the conventional apparatus. improves.

Although not particularly described in the above embodiment, a tool changing device for automatically changing the tool of the tool base 30 may be provided, and by doing so, various kinds of processing can be further performed. Further, a sub-headstock may be provided on the side facing the headstock 10 to allow back surface processing.

Further, although the headstock is fixed in the above embodiment, it is of course possible to move the headstock in the Z-axis direction.

[Effect of device]

As described above, according to the present invention, the bed is formed with the first surface and the second surface orthogonal to the first surface, and the first surface is formed.
Since the first tool rest and the second tool rest are placed on the surfaces of and, respectively, one of the two tool rests is in the X-, Y-, and Z-axis directions. You can move to all,
This has the effect of improving the efficiency of processing and production.

Further, for the same reason, it is easy to secure a space for disposing the mechanism for moving the second tool base in the Y-axis direction.

Further, since the first surface and the second surface are each formed as an inclined surface, the chips and the coolant can flow well on either surface.

[Brief description of drawings]

FIG. 1 is a perspective view of a turning center as a multi-tasking machine according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a view for explaining various processing operations by the turning center. FIG. 4 is a diagram showing the moving direction of the conventional turning center, and FIG. 5 is a diagram for explaining the problems of the conventional turning center. 5 ... Workpiece, 10 ... Spindle base, 12 ... Spindle, 20 ...
... Turret stand, 30 ... Tool stand, 40 ... Bed, 41
...... First surface, 42 ...... Second surface.

Claims (1)

[Scope of utility model registration request] 1. A headstock that rotatably holds a spindle, a bed that has a first surface and a second surface that are orthogonal to each other and that are inclined with respect to a horizontal plane, and a centerline of the spindle. The first surface movably in the Z-axis direction parallel to the main axis center line and in the X-axis direction orthogonal to the Z-axis in a plane parallel to the first surface of the bed. A first tool rest mounted on the Z axis, and the Z axis is arranged on the other side with respect to the center line of the spindle.
An X-axis, an X-axis, and a second tool base mounted on the second surface so as to be movable in a Y-axis direction orthogonal to both of these axes, and a multi-tasking machine.