JPH0626763B2 - Work loading / unloading device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a column-type turning machine tool, and more particularly to a machine tool provided with a work loading / unloading device.

[Conventional technology]

In recent years, from the viewpoint of space saving, as a correction for the defects of conventional horizontal bed type lathes and slant bed type lathes,
A column-type lathe in which a tool rest is arranged on the front surface or side surface of a vertical column so as to be vertically movable is heavily used.

3 and 4 are a front view and a side view showing an example of such a column-type lathe. In each of these figures,
In the lathe, two horizontal guide rails 2 are laid on a rectangular horizontal bed 1, and a column 4 movable in the Z-axis direction is placed on the rail 2 via a guide portion 3. A headstock 5 is attached to the operator side of the front side surface of the horizontal bed 1, and a headstock 6 is rotatably supported on the headstock 5. A workpiece to be processed is attached to the front surface of the spindle 6 via a chuck.

Similarly, on the operator side of the front side surface of the horizontal bed 1, a guide surface 7 is attached to the opposite side of the spindle 6, and a tailstock 8 is attached to the guide surface 7 in the Z-axis direction along the guide surface 7. It is movably mounted. A center 9 is attached to the tip of the tailstock 8 on the chuck side and supports the center of the end surface of the workpiece W to be processed.

On the other hand, a cross slide 10 is attached to the front surface of the column 4 on the operator side so as to be movable in the X-axis direction by a servomotor 11, and a housing 12 is attached to the front surface of the cross slide 10. On the chuck side of the housing 12, a turret tool post 13 that can be indexed around a turning axis in the Z-axis direction is attached. Turret turret 1
Reference numeral 3 denotes, for example, a decagonal shape, to which ten inner and outer diameter tools T are detachably mounted.

A control board 14 and a high-power board are arranged on the back surface of the horizontal bed 1, and each control device is built therein. In addition, a pillar 15 is erected upward at the rear of the horizontal bed 1 on the tailstock side, and a wiring and piping member 17 is flexibly mounted between the upper end of the pillar 15 and the mounting member 16 of the servomotor 11. And flexibly follow the movement of the column 4 in the Z-axis direction and the cross slide 10 in the X-axis direction.

In such a machine tool, a work transfer robot, a tool changer (ATC), etc. are not shown in the figure, but they are usually arranged on the back of the machine. It may be installed on the side.

[Problems to be solved by the invention]

In the conventional machine tool and the work loading / unloading device thereof, when the work loading / unloading device is arranged in front of the machine tool,
When it is placed on the rear side, it is difficult for the operator to perform various adjustments such as setting tools and exchanging blades, and it is difficult to repair the loading / unloading device.In addition, the loading / unloading device and the work place are far away. That is, the result is that the loading / unloading device must be upsized in order to reach this, which is contrary to the space saving. In addition, since the spindle etc. are concentrated on the front side of the machine, loading and unloading the work from the rear side will cause the machine to traverse, and it will be necessary to evacuate the turret each time, which will significantly reduce workability. I was invited.

The present invention was devised in view of the above problems, and provides a machine tool including a loading / unloading device that is easy to repair and manage, saves space, and improves productivity. To aim.

[Means for solving problems]

In the present invention, means for solving the above-mentioned problems are as follows: a headstock mounted on a bed of an NC turning machine tool and having a chuck at one end, and a headstock which is on the bed and faces the chuck and moves in the spindle axis direction. A column which is erected on a possible saddle, a turret tool post which is guided by a vertical guide surface formed on the operator side front face of the column and is movable in a direction orthogonal to the spindle axis, and a work provided on the column. In the carrying-in / out apparatus, a work feeder provided on the upper surface of the box-shaped control panel on the side opposite to the worker and capable of carrying in a loop, and the column for carrying between a pallet and a chuck of the work feeder. Of the swivel unit that is movable in a plane orthogonal to the spindle axis of the swivel unit, a drive source that drives the swivel unit, and the swivel unit that is flush with the plane. In it consists of a pivotally provided transport arm having a gripping portion at the tip, and a work loading and unloading device, characterized in that the conveying of the workpiece in combination with the movement of the machine tool and the movement of 該搬 Okuude.

[Action]

The conveying arm supported by the revolving unit revolves, and the work W is attached to and detached from the chuck C of the main shaft by the gripping portion at the tip thereof.
The revolving unit is slidably inserted into the guide bar, slides, reciprocates between the main shaft side and the opposite side by gripping the work W, and carries out the loading / unloading operation. When the work W is mounted on the spindle, the swing unit or the transport arm must also move in a direction parallel to the axis of the spindle, but the guide bar of the swing unit is attached to the column via the saddle. Since the column moves on a guide rail laid on the top surface of the horizontal bed in parallel with the axis of the main shaft, the transport arm can be moved by moving the column.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the embodiments and the drawings.

1 and 2 are a side view and a front view showing the configuration of a column type lathe equipped with a work loading / unloading device according to an embodiment of the present invention. 1 and 2, the column-type lathe is composed of a rectangular horizontal bed 1, a headstock 5 projectingly arranged on the operator-side front side of the horizontal bed 1, and a headstock 5 thereof. A chuck C rotatably supported on the main shaft end and a column 4 movable in the Z-axis direction on guide rails 2 and 2 arranged on the upper surface of the horizontal bed 1 in parallel with the main shaft axis. , A cross slide 10 movable on a guide rail that is vertically disposed on the operator-side side surface of the column 4 orthogonally to the spindle axis, and a housing 1 on the cross slide 10.
Turret tool post 13 attached to the headstock side of 2
And a control panel 14 for them also serves as a switchboard and is arranged on the back side of the horizontal bed 1.

In such a column-type lathe, the guide bar 22 is provided on the side surface of the saddle 21 on the headstock side in a direction orthogonal to the axis of the spindle 6.
Is horizontally installed, a guide bar 22 is slidably fitted with a moving member 23 that is a turning unit, and is driven by a hydraulic or pneumatic cylinder 24 that is a drive source for driving the moving member 23, Sliding between the front operator side and the control panel 14 on the opposite side of the horizontal bed 1 to the operator side. A robot arm 25, which is a transfer arm having a gripping claw at its tip, is pivotally supported by the moving member 23.

The present invention has an advantage that the upper surface of the control panel 14 can also serve as a track portion of a work feeder for pooling a plurality of works. For example, a circular or elliptical track is laid and shown in FIG. 1 or 2. As described above, the work feeder 26 having the work W mounted thereon can be made to travel on its orbit.

As the robot arm 25, a well-known one is used. When the moving member 23 moves to the main shaft side, the upright state shown by the chain double-dashed line in FIG. By moving the column 4 in the Z direction shown in the figure, the workpiece W held by the chuck C is approached to the chuck C, and the workpiece W is held from the chuck C by the column C moving again in the Z direction. The arm 25 is separated, the arm 25 is rotated to the upright state, and the moving member 23 slides on the guide bar 22 while holding the work W, and moves to the control panel 14 side. Then, the arm 25 rotates counterclockwise in FIG. 1 to load the work W into the work feeder 2
Lower on 6. At this time, the gripping claws are usually formed so as to be able to twist 90 degrees, so that the work W can be lowered in the most stable state. As shown in FIG. 2, a double hand is usually used as the robot arm 25, and when the robot arm 25 is rotated to the carry-in / out position on the control panel 14, the work W is fed to the empty work feeder 26.
At the same time as lowering _one hand from the hand 25J ₁ , the other hand 25J ₂ grabs the next work.

In the apparatus of this embodiment, the front side of the worker who performs processing and the back side of the bed that carries in and out can be partitioned by the automatic shutter 27 of the coding type, and the above-mentioned carrying in and out. When the operation is completed, the front and back surfaces are isolated, and preventive measures are taken so as not to interfere with each other.

Thus, in the machine tool of the present invention, by attaching a simple robot to the machine itself, it is possible to clearly classify the functions of the front surface for work and the rear surface for loading / unloading, and the robot mechanism is separately provided on the back surface. It is much simpler and less expensive than the complexity of installing the robot.

〔The invention's effect〕

As described above, according to the present invention, it is possible to provide a machine tool including a loading / unloading device that is easy to repair and manage, saves space, and improves workability and productivity.

Further, since the upper surface of the control panel can be used as a transport path (track) for the work feeder, a compact structure can be achieved without newly installing a work feeder dedicated stand, and space can be saved.

[Brief description of drawings]

1 and 2 are a side view and a front view of one embodiment of the present invention, and FIGS. 3 and 4 are a front view and a side view of a conventional example. 1; horizontal bed, 2; guide rail, 4; column, 5; headstock, 6; spindle, 13; turret tool post, 14; control board, 21; saddle, 22; guide bar, 23; moving member (swivel unit) ), 24; Cylinder, 25; Robot arm (transport arm), 26; Work feeder.

Claims (1)

[Claims] 1. A headstock mounted on a bed of an NC turning machine tool and having a chuck at one end, and a column standing on a saddle that is on the bed and faces the chuck and is movable in the spindle axis direction. A turret tool post that is guided by a vertical guide surface formed on the operator-side front face of the column and is movable in a direction orthogonal to the spindle axis, and a work loading / unloading device provided in the column, which is an anti-worker of the bed. And a work feeder provided on the upper surface of a box-shaped control panel so as to be conveyed in a loop shape, and orthogonal to a spindle axis facing the chuck side of the column for conveyance between a pallet and a chuck of the work feeder. A swivel unit that is movable in a plane, a drive source that drives the swivel unit, and a swivel unit that is swivelable in the same plane as the plane and has a grip portion at the tip. Consists of a transport arm, the workpiece loading and unloading apparatus, characterized in that the conveying of the workpiece in combination with the movement of the machine tool and the movement of 該搬 Okuude.