JPH0755418B2 - Turning machine tool with material cutting and feeding device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a turning machine tool equipped with a material cutting and supplying device capable of cutting a long material into a desired length and supplying the material to a lathe. .

[Conventional technology]

There are various kinds of workpieces machined by a turning machine tool, and in particular, for round parts based on steel, a cut material obtained by cutting a long material into a desired length is generally used. This cutting material is mainly obtained by the following method and supplied to a turning machine tool.

The first method is a method of purchasing a cutting material that has been cut to a desired length in advance, storing it, and supplying it to the turning machine tool each time.

The second method is a method of purchasing a long material as it is, cutting it to a desired length with equipment such as a cutting device, and supplying it.

[Problems to be Solved by the Invention]

However, each of the above methods has the following problems.

The first method has a problem in that when the cutting material is automatically carried into the turning machine tool, a special feeding device capable of sorting and feeding the cutting material individually for each type is required. . In addition, there is an economic problem that the material cost becomes higher than purchasing a long material.

In the second method, a cutting device must be installed separately from the turning machine tool, a large floor area is required in the facility, and maintenance of such a device requires a large amount of cost. There was a problem of this.

Further, conventionally, a cutting step of cutting a material with a cutting device,
There was no line to the turning process of turning the cut material with a turning machine tool. Therefore, the material is cut into various lengths in the cutting process to stock cutting materials of various desired lengths, and the cutting materials required in the turning process are searched from this stock and supplied to the turning machine tool. Was taken.

Therefore, the stock cutting material stays long from the time the material is cut to the time it is processed by the turning machine tool, and the cutting process is not linked to the turning process, so stock of various cutting materials is required to some extent. There was a problem of poor efficiency.

The present invention was conceived to solve the above problems, and an object thereof is to continuously perform the cutting process and the turning process without waste by supplying a long material. It is an object of the present invention to provide a turning machine tool having a material cutting and feeding device capable of cutting.

[Means for Solving the Problems]

The present invention takes the following means in order to achieve the above object.

A bed, a first headstock provided on the bed, a first spindle rotatably supported by the first headstock, and a first spindle that is fixed to one end of the first spindle to grip a workpiece. 1 chuck, a first turret provided on the bed and relatively movable in the axial direction and the radial direction with respect to the first spindle, and supported by the first turret so as to be rotatable and indexable. A first turret to which a plurality of tools for processing the workpiece held by one chuck are attached; and the first turret on the bed.
A second headstock provided opposite to the headstock and relatively movable in the axial direction of the first headstock, a second headstock rotatably supported by the second headstock, and one end of the second headstock. A second chuck fixedly mounted on the bed for holding a workpiece, a second turret provided on the bed and movable relative to the second spindle in the axial direction and the radial direction, and the second turret. And a second turret having a plurality of tools for machining the workpiece gripped by the second chuck mounted on the second turret. A material stocker that supports a lengthy material in parallel with the main axis, a material positioning means that is provided in this material stocker, and that feeds a long material in the axial direction by a predetermined amount and positions the material in the axial direction, and the material stocker vicinity Provided in the front A clamping device for fixing the positioning has been the material feed by the material positioning means provided near the clamping device, a cutting device for cutting the positioning has been the material feeding by the material positioning means,
The cutting device is provided in the vicinity of the cutting device and has a gripping device that grips the tip of the material that has been fed out and positioned by the material positioning means, and cuts the material cut into a predetermined length by the cutting device to the axis of the first spindle. A turning machine tool provided with a material cutting and feeding device, which is provided with a feeding device which moves to a position where the axis of the material coincides with and is delivered to the first chuck.

[Action]

An opposing spindle type NC lathe is equipped with a material stocker that supports long materials parallel to the spindle axis, and the material positioning means of this material stocker feeds and positions a predetermined amount of long material, and securely fixes it with a clamping device. Cut with a cutting device. Since this cutting material can be supplied to the chuck position of the spindle by the supply device and passed to the chuck, continuous cutting of the long material, supply to the spindle, and turning of the front and back surfaces of the work piece can be performed continuously. Can be done by

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 is an overall front view showing a turning machine tool equipped with a material cutting and feeding device of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. It is a figure.

As shown in FIG. 1, a turning machine tool provided with the material cutting and feeding device of the present invention comprises an NC lathe 1, a material stocker 2, a cutting device 3, a feeding device 4 and the like.

First, the NC lathe 1 will be described.

The bed 5 is a base that constitutes the main body of the NC lathe 1. A first headstock 6 is fixed to one end of the bed 5.
A first spindle 7 is rotatably supported in the first spindle stock 6. A first chuck 8 is fixed to one end of the first spindle 7. The first chuck 8 is driven by a chuck cylinder 9 provided at the other end of the first main shaft 7 to hold a workpiece. The first spindle 7 is rotationally driven by a spindle motor (not shown) provided on the first spindle stock 6 or the bed 5.

A Z-axis guide 13 is provided on the bed 5 in the direction of the axis (Z-axis) of the first main shaft 7, and a first saddle 11 which is guided by the Z-axis guide 13 and is movable in the Z-axis direction is provided. Has been. The position and feed of the first saddle 11 in the Z-axis direction are controlled by an NC device (not shown) via a servo motor, a ball screw and the like. In the first saddle 11,
An X-axis guide 14 is provided in the diameter (X-axis) direction of the first main shaft 7, and a first cross slide 12 which is guided by the X-axis guide 14 and is movable in the X-axis direction is provided. This first cross slide 12 is a servo motor 1 by an NC device.
5. The position and feed in the X-axis direction are controlled via a ball screw and the like. A first tool rest 10 is fixed on the first cross slide 12. On the first turret 10, a turret 16 for mounting a tool T for processing a workpiece is supported so as to be freely rotatable and indexable. Therefore, the machining of the workpiece attached to the first spindle 7 is performed by the controlled movement of the first tool rest 10 in the X-axis and Z-axis directions.

A second headstock 17 and a second tool rest 18 are provided on the bed 5 so as to face the first headstock 6 and the first tool rest 10. The structures of the second headstock 17 and the second turret 18 are the same except that the second headstock 17 is guided by the headstock guide 19 and is movable in the Z-axis direction. Since it is arranged symmetrically with 10 and is substantially the same as the first headstock 6 and the first tool rest 10, respectively, description thereof will be omitted. The movement of the second headstock 17 in the Z-axis direction is controlled by the NC device via the servomotor 20 and the ball screw.

The above is the configuration of the NC lathe of the embodiment, in which the first headstock 6 and the first tool post 10 and the like perform the first step (surface) processing, and the second headstock 17 and the second tool post 18 and the like. This is an NC lathe where the second step (back side) is processed.

Next, the material stocker 2 will be described.

The support base 21 is a base that constitutes the material stocker 2. A guide roller 22 that guides the material 23 in the axial direction is provided on the upper surface of the support base 21. Further, the support base 21 is provided with a material positioning means (not shown). This material positioning means, a known bar material positioning means is used,
The material 23 can be sent in the axial direction and positioned in the axial direction.

The material stocker 2 configured as described above is provided on the side of the first headstock 6 to support the long material 23 in parallel with the axis of the first spindle 7 and to support the material 23 on the chuck cylinder 9 side. From the first chuck 8 to the first chuck 8 side for positioning, and the material 23 is supplied to the cutting device 3 described later.

Next, the cutting device 3 will be described.

A clamp device 31 for fixing the material 23 delivered by the material stocker 2 is arranged on the bed 5. The clamp device 31 includes, for example, a V-shaped receiving member 32,
It is composed of a cylinder 33, a clamper 34, etc., and the material of the material 23 is pressed by the clamper 34 to the receiving member 32 and fixed by the operation of the cylinder 33.

The cutting device 3 is provided below the clamp device 31. The base 24 of the cutting device 3 is fixed to the bed 5. A guide 25 is provided on the base 24, and the guide 25
Guided by, the saw head is movable in the radial direction of the material 23
26 are provided. This saw head 26 is a servo motor
Position and feed are controlled via 27 and ball screw 28. A circular saw blade 29 rotatably driven by a motor 30 is supported on the saw head 26 so as to be rotatable around an axis parallel to the axis of the material 23.

The material 23 fixed to the clamp device 31 is cut into a desired length by the cutting device 3 configured as described above. Although the cutting device 3 of the present embodiment is a cutting device using the circular saw blade 29, any cutting device that can cut the material 23 may be used, for example, a device that cuts with a band saw blade.

Next, the supply device 4 will be described.

The feeding device 4 is provided below the first headstock 6 at a position facing the material stocker 2 with the cutting device 3 in the center. A guide 35 is provided on the bed 5 from below the first headstock 6 to below the first chuck 8 in parallel with the first spindle 7. The guide 35 guides the first spindle 7 to guide the same.
A base 36 that is movable in the axial direction is provided. This base 36 includes a servo motor and a ball screw 37 (not shown).
The movement position is controlled via. A cylinder 38 is provided on the base 36. A hand 40 is provided at the tip of the piston rod 39 of the cylinder 38. The hand 40 holds the material 23 and the like, and since a general hand is used, the description thereof will be omitted. Also, the cylinder
A guide 41 is attached between the 38 and the hand 40. The guide 41 guides the movement of the hand 40 to the center of the first chuck 8 by driving the cylinder 38, and the hand 40 and the cutting device 3 operate. It supports the cut material 23a.

The cutting device 3 is constituted by the supply device 4 configured as described above.
The first chuck 8 using the material 23a cut by
Supply to. The feeding device 4 of this embodiment is the NC lathe 1.
However, the present invention is not limited to this, and the material 23a cut by the cutting device 3 is directly attached to the first
Any form may be used as long as it is supplied to the chuck 8, and a commercially available robot or the like may be attached.

Below the first chuck 8, an opening / closing cover 42 that partitions the turning area of the NC lathe 1 from the cutting device 3 and the supply device 4 is provided. The opening / closing cover 42 is provided with a cutting device 3 and a supply device 4 for removing chips, coolant, etc. generated during turning.
To adhere to.

The opening / closing cover 42 is attached to a cover 46 that covers the entire NC lathe via a hinge 44, and is configured to swing and open around the hinge 44 by the operation of the eye-shaped cylinder 43.

NC lathe 1, material stocker 2, cutting device 3 having the above configuration
The supply device 4, the open / close cover 42, and the like are integrally controlled by a numerical control device (not shown).

Next, the operation of the present invention will be described.

It is assumed that the numerical control device stores in advance data necessary for machining, such as the length of the workpiece and the NC machining program, and that the setup of the tool T, the chuck claws, etc. is all completed.

The operator places the long material 23 on the guide roller 22 of the material stocker 2. When the material 23 is placed, the following series of processing operations are performed by the numerical controller. The material 23 is fed from the position of the circular saw blade 29 by the material positioning means to the feeding device 4
It is positioned on the side so as to project by the length of the desired workpiece. When the positioning is completed, the material 23 is fixed by the clamp device 31. At the same time, the hand of the feeder 4
The material 23 is gripped at 40. Next, the circular saw blade 29 of the cutting device 3 is rotated at a predetermined number of revolutions and fed in the direction of the material 23 to cut the material 23. When the cutting is completed, the cutting device 3
To the position shown in the figure and stop the rotation of the circular saw blade 29. The operation up to this point is the cutting operation of the material 23, which is normally performed during the turning process of the NC lathe 1.

The cut material 23a is supplied to the first chuck 8 by the supply device 4. Next, the operation of the supply device 4 will be described in detail. The open / close cover 42 is opened by the eye-shaped cylinder 43. The supply device 4 is moved to a position 4a below the first chuck 8 by a servo motor, a servo screw 37, and the like. Next, the cylinder 38 is driven to move the hand 40 to the position 4b where the axis of the material 23a gripped by the hand 40 and the axis of the first main shaft 7 coincide with each other.
By moving the feeding device 4 in a direction approaching the first chuck 8,
The material 23a is held by the first chuck 8. At the same time, the hand 40 is opened to return the entire supply device 4 to the position indicated by the solid line in FIGS. 1 and 3. After returning to the original position, the opening / closing cover 42 is closed. This completes the material supply operation of the supply device 4.

The material 23a gripped by the first chuck 8 is processed in the first step by the first headstock 6, the first tool rest 10, and the like.
The cutting operation described above is performed during the processing in the first step, and the next material is held by the hand 40 and stands by. When the processing of the first step is completed, the processed material attached to the first chuck 8 is delivered to the second chuck 45 of the second headstock 17, and the processing of the second step is performed. At the same time, the next material is supplied to the first chuck 8 by the material supply operation described above.

With the above operation, simply setting the long material 23 on the material stocker 2 cuts the material 23 into a desired length and supplies it to the NC lathe to consistently produce a work piece from the long material. It can be automatically processed continuously.

In the present embodiment, the circular saw blade of the cutting device has been described on the premise of advancing and retracting in the radial direction of the material, but depending on the shape of the workpiece, the cutting may be performed in the inclined direction, and the cutting shape and direction are limited. It is not something that will be done.

Further, in order to avoid adverse effects such as vibration when cutting is performed during turning, if a vibration-proof means is provided between the NC lathe body and the cutting device, even better turning can be performed.

Furthermore, in this embodiment, the material is supplied from the rear side of the spindle, but it may be supplied from the front side of the spindle toward the spindle.

〔effect〕

Since the present invention is configured as described above, the following effects can be expected.

That is, according to the present invention, in the opposed main spindle type NC lathe, the long material supplied from the material stocker is automatically cut into a desired length in a continuous operation, and immediately supplied to the first main spindle. After processing with one spindle, the second spindle is used continuously, so there is no need for a space for stocking the cutting material cut by the cutting device, and no setup is required. By cutting the next material in advance, processing time can be shortened and production efficiency is improved.

In addition, cutting and turning can be automatically processed continuously by simply supplying a long material, which shortens the setup time. Further, the cutting device and the feeding device are attached to the lathe and are integrally configured, so that the required floor area is reduced as compared with the case where the device is made compact and is conventionally configured separately.

[Brief description of drawings]

FIG. 1 is a front view of a turning machine tool equipped with a material cutting and feeding device according to an embodiment of the present invention, and FIG. 2 is II-II of FIG.
A sectional view and FIG. 3 are sectional views taken along the line III-III in FIG. 1 ... NC lathe, 2 ... material stocker 3 ... cutting device, 4 ... feeding device 6 ... first headstock, 8 ... first chuck 10 ... first tool rest, 16 ... turret 23 ... Material, 31 Clamping device 42 Open / close cover

Claims (1)

[Claims] 1. A bed, and a first provided on the bed.
A headstock and a first rotatably supported by the first headstock.
A main shaft, a first chuck fixed to one end of the first main shaft, for holding a workpiece, and a first chuck provided on the bed and movable relative to the first main shaft in an axial direction and a radial direction. A turret, a first turret, which is supported by the first turret so as to be freely turnable and indexable, and is provided with a plurality of tools for processing a workpiece gripped by the first chuck, and the first turret on the bed. A second headstock provided opposite to the headstock and relatively movable in the axial direction of the first headstock, a second headstock rotatably supported by the second headstock, and one end of the second headstock. A second chuck fixedly mounted on the bed for holding a workpiece, a second turret provided on the bed and movable relative to the second spindle in the axial direction and the radial direction, and the second turret. Is supported by the second chuck so that it can be freely swiveled and indexed by the second chuck. A lathe consisting of a second turret to which a plurality of tools for machining a workpiece are attached, and a material stocker which is provided in the vicinity of the lathe and which supports a long material of a workpiece in parallel with the spindle axis, and the material stocker. And a material positioning unit that feeds a long material in the axial direction by a predetermined amount and positions the material in the axial direction, and a material that is provided near the material stocker and is fed and positioned by the material positioning unit to fix the material. A clamping device, a cutting device which is provided in the vicinity of the clamping device and cuts the material fed out and positioned by the material positioning means, and a material tip which is provided in the vicinity of the cutting device and is fed out and positioned by the material positioning means Which has a gripping means for cutting the material cut into a predetermined length by the cutting device, A turning machine tool provided with a material cutting and supplying device, comprising: a supply device that moves to a position where an axis of a main shaft and an axis of a material coincide with each other and delivers the material to the first chuck.