JPH0446724A - Turning machine tool provided with material cut and supply devices - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a turning machine tool equipped with a material cutting and feeding device capable of cutting a long material into a desired length and supplying the material to a lathe. .

[Conventional technology]

There are various types of workpieces that can be machined with turning machine tools, but in particular, for round parts based on rope, cut materials obtained by cutting a long material to a desired length are generally used. This cut material is mainly obtained by the following methods and supplied to turning machine tools.

The first method is to purchase and store cutting materials that have been cut to a desired length in advance, and to supply them to a turning machine tool each time.

The second method is to purchase a long material as is, cut it into a desired length using equipment such as a cutting device, and then supply the material.

[The problem that the invention attempts to solve]

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

The first method had a problem in that a special feeding device was needed to automatically feed the cut materials into the turning machine tool, which could sort and feed the cut materials individually by type. . Additionally, there was an economical problem in that the material costs were higher compared to purchasing long materials.

In the second method, cutting equipment must be installed separately from the turning machine tool, which requires a large floor space within the facility and requires a large amount of cost to maintain such equipment. There was a problem that it took a while.

In addition, conventionally, the cutting process involves cutting the material with a cutting device;
There was no line-up with the turning process, in which the cut material is turned using a turning machine tool. For this reason, there is a method in which the material is cut into various lengths in the cutting process, cutting materials of various desired lengths are stocked, and the cutting material necessary for the turning process is searched from this stock and supplied to the turning machine tool. was taken.

Therefore, the residence time of the stock cut materials from the time the material is cut to the time it is processed by the turning machine tool is long, and since the cutting process is not linked to the turning process, a certain amount of stock of various cut materials is required. The problem was that it was inefficient.

The present invention was devised to solve the above-mentioned problems, and its purpose is to eliminate wasteful cutting and turning processes by supplying a long material. It is an object of the present invention to provide a turning machine tool equipped with a material cutting and feeding device capable of performing material cutting and feeding.

[Means to solve the problem]

In order to achieve the above object, the present invention takes the following measures.

a bed, a headstock provided on the bed, a main shaft rotatably supported on the headstock, a chuck fixed to one end of the main shaft, and a chuck provided on the bed with respect to the main shaft. A lathe comprising a tool rest that is relatively movable in the axial direction and the radial direction, and a material stocker provided near the lathe and capable of supporting and positioning a workpiece material in the axial direction, and a material stocker provided near the lathe. and a cutting device for cutting the material that is fed and positioned by the material stocker, and a supply device that is provided near the cutting device and supplies the cut material to the chuck. and a turning machine tool equipped with a supply bag 1.

[Effect]

With the material stocker, on this material stocker! ! The long material that has been cut is sent to the cutting device in the axial direction by the length of the desired workpiece.The delivered material is cut into the length of the desired workpiece by the cutting device attached to the lathe. It is severed immediately. The cut material is immediately supplied by a supply device to a chuck provided on the main shaft of the lathe, and subjected to turning processing.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front view of the material cutting and feeding apparatus of the present invention.

As shown in FIG. 1, a turning machine tool equipped with a material cutting and feeding device according to the present invention is comprised of an NC lathe 1, a material stone force 2, a cutting device 3, a feeding device 4, and the like.

First, the NC lathe 1 will be explained.

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 within the first jE spindle 6. A first chuck 8 is fixed to one end of the first main shaft 7. This first chuck 8 is driven by a chuck cylinder 9 provided at the other end of the first raw shaft 7.
It grips the 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 is provided which is guided by the Z-axis guide 13 and is movable in the Z-axis direction. It is being This first saddle 11 is operated by an NC device (not shown) via a servo motor, a pole screw, etc.
The position and feed in the Z-axis direction are controlled. The first saddle 11 is provided with an X-axis guide 14 in the radial (X-axis) direction of the first main shaft 7, and a first cross slide 12 that is guided by the X-axis guide 14 and is movable in the X-axis direction. is provided. The position and feed of the first cross slide 12 in the X-axis direction are controlled by an NC device via a servo motor 15, a pole screw, and the like. 1st
A first tool rest 10 is fixed on the cross slide 12. The first tool post 10 includes a tool T for machining the workpiece.
A turret 16 to which the turret is attached is supported so as to be pivotable and indexable. Therefore, machining of the workpiece attached to the first earth shaft 7 is performed by controlled movement of the first tool post 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 structure of the second headstock 17 and the second tool rest 18 is that the second headstock 17 is guided by the headstock guide 19 and is movable in the Z-axis direction.
They are arranged symmetrically with the tool rest 10, and are substantially the same as the first headstock 6 and the first tool rest 10, respectively, so a description thereof will be omitted. Note that the movement of the second headstock 17 in the Z-axis direction is controlled by an NCR device via a servo motor 20 and a pole screw.

The above is the configuration of the NC lathe of the embodiment, in which the first process (surface) machining is performed by the first headstock 6, the first tool rest 10, etc., and the second headstock 17, the second tool rest 18, etc. ,
This is an NC lathe that performs the second process (back side) processing. However, the present invention is not limited to this configuration;
It may be an ordinary NC lathe with axis control, or it does not need to be an NC lathe, and may be a machine that exclusively processes workpieces.

Next, the material stocker 2 will be explained.

The support stand 21 is a base that constitutes the material stocker 2. A guide roller 22 is provided on the upper surface of the support base 21 to guide the material 23 in the axial direction.

Further, the support base 21 is provided with a material positioning means (not shown). This material positioning means uses a known bar positioning means, and is capable of feeding out the material 23 in the axial direction and positioning it in the axial direction.

The material stocker 2 configured as described above is provided on the side of the first headstock 6, supports the elongated material 23 in parallel to the axis of the first spindle 7, and supports the material 23 on the side of the chuck cylinder 9. From there, feed it to the first chuck 8 side and position it.
It supplies a material 23 to a cutting device 3, which will be described later.

Next, the cutting device 3 will be explained.

A clamp device 31 for fixing the material 23 sent out by the material stocker 2 is arranged on the bed 5. This clamping device 31 includes, for example, a 7-shaped receiver member 32, a cylinder 33, a clamper 34, etc.
By the operation of the cylinder 33, the clamper 34 presses the material 23 against the support member 32 and fixes it.

A cutting device 3 is provided at the bottom of the clamping device 31. A base 24 of this cutting device 3 is fixed to the bed 5. A guide 25 is provided on the base 24, and a saw head 26 that is guided by the guide 25 and movable in the radial direction of the material 23 is provided. This saw head 2
6 has its position and feed controlled via a servo motor 27 and a pole screw 28. The saw head 26 includes a circular saw blade 29 that is rotatably driven by a motor 30.
It is rotatably supported around an axis parallel to the axis of No. 3.

The cutting device 3 configured as described above cuts the material 23 fixed to the clamp device 31 into a desired length.

Although the cutting device 3 in this embodiment is a cutting device using a 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 explained.

The supply device 4 holds the cutting device 3 in the center and feeds the material stock 7.
It is provided below the first headstock 6 at a position opposite to the lever 2. A guide 35 is provided on the bed 5 from the bottom of the first headstock 6 to the bottom of the first chuck 8 in parallel with the first spindle 7.
A base 36 is provided which is guided by the guide 35 and is movable in the axial direction of the first main shaft 7. The movement position of this base 36 is controlled via a servo motor and a pole screw 37 (not shown).

A cylinder 38 is provided on the base 36.

A hand 40 is provided at the tip of the piston rod 39 of this cylinder 38. This hand 40 is made of material 2
3, etc., and a general hand is used, so the explanation will be omitted. In addition, the cylinder 38 and the hand 4
0, a guide 41 is installed between the hand 40 and the first
While guiding the movement of chuck 8 to the center, hand 4
0 and the material 23a cut by the cutting device 3.

With the supply device 4 configured as described above, the cutting device 3
The cut material 23a is supplied to the first chuck 8 as a workpiece. The supply device 4 of this embodiment is configured to be attached to the NC lathe 1, but the present invention is not limited to this, and the material 23a cut by the cutting device 3 is directly delivered to the first chuck 8. It may be in any form as long as it can be supplied to a company, and a commercially available robot or the like may be attached.

Below the first chuck 8 is an openable cover 4 that partitions the turning area of the NC lathe 1 from the cutting device 3 and the feeding device 4.
2 is provided. This opening/closing cover 42 prevents chips, coolant, etc. generated during turning from adhering to the cutting device 3 and the supply device 4.

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

NC lathe 1, material stocker 2, and cutting device 3 configured as above
, the supply device 4, the opening/closing cover 42, and the like are collectively controlled by a numerical control device (not shown).

Next, the present invention will be explained in detail.

The explanation will be made assuming that the numerical control device has previously stored data necessary for machining, such as the length of the workpiece and the NC nib program, and that all setups for the tool T, chuck jaws, etc. have been completed.

The operator places a long material 23 on the guide roller 22 of the material stocker 2. When the material 23 is placed, the numerical control device performs the following series of processing operations. Material 2
3 is positioned by the workpiece positioning means so that it protrudes from the position of the circular saw blade 29 toward the supply device 4 by the length of the desired workpiece. When the positioning is completed, the workpiece 23 is moved by the clamping device 31. to be fixed. At the same time, the material 23 is gripped by the hand 40 of the supply device 4, and the circular saw blade 29 of the cutting device 3 is rotated at a predetermined number of rotations,
The material 23 is cut by feeding in the direction 3. When the cutting is completed, the cutting device 3 is returned to the position shown in the figure, and the rotation of the circular saw blade 29 is stopped.

Up to this point, the cutting operation of the material 23 is performed, 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 explained in detail. The opening/closing cover 42 is opened using the eye-shaped cylinder 43. The supply device 4 is moved to the lower position 4a of the first chuck 8 using a servo motor, a pole screw 37, etc. Next, the cylinder 38 is driven to remove the material 23 held by the hand 40.
The hand 40 is moved to a position 4b where the axial center of a and the axial center of the first main shaft 7 coincide. The supply device 4 is moved in a direction approaching the first chuck 8, and the material 23a is gripped by the first chuck 8. At the same time, the hand 40 is opened and the entire supply device 4 is returned to the position shown by the solid line in FIGS. 1 and 3. Once returned 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 held by the first chuck 8 is processed in a first step by the first headstock 6, first tool rest 10, etc. During the processing of this first step, the above-described cutting operation is performed, and the next material is held by the hand 40 and is waiting.

When the machining of the first step is completed, the processed material attached to the first chuck 8 is transferred to the second chuck 45 of the second headstock 17.
The receiver is then handed over to undergo the second process. At the same time, the next material is supplied to the first chuck 8 by the material supplying operation described above.

With the above-described operation, simply by setting the long material 23 on the material stocker 2, the material 23 can be cut to the desired length.
By supplying it to an NC lathe, it is possible to consistently and automatically machine a workpiece from a long material.

In addition, in this example, the circular saw blade of the cutting device was explained on the assumption that it advances and retreats in the radial direction of the material, but depending on the shape of the workpiece, it may be possible to cut in an inclined direction, and the shape and direction of cutting are limited. It is not something that will be done.

In addition, in order to avoid adverse effects such as vibration when cutting is performed during turning, a vibration isolating means is provided between the NC lathe main body and the cutting device, and even better turning can be performed.

Furthermore, in this embodiment, the material is supplied from the rear side of the spindle, but it may also be fed 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, a long material is automatically cut to a desired length in a continuous operation and immediately fed to the lathe, so there is no need to stock cut materials and By cutting the next material in advance, processing time can be shortened and production efficiency improved. Especially the opposed spindle type N
More effective on C lathes.

Additionally, by simply supplying a long material directly, cutting and turning can be performed continuously and automatically, reducing setup time. Furthermore, since the cutting device and the feeding device are attached to the lathe and configured integrally, the cutting device is made more compact, and the required floor space is reduced compared to the case where the cutting device and the feeding device are configured independently from each other.

[Brief explanation 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.
The cross-sectional view, FIG. 3, shows the cross-sectional view taken along the line ■-■ in FIG. 1 - NC lathe 3 - Cutting device 6 - First headstock 10 - First turret 23 - Material 42 - Opening/closing cover - Material stocker - Supply device 1st chuck 6 - Turret 1 - Clamp Device diagram 2

Claims (1)

[Scope of Claims] A bed, a headstock provided on the bed, a main shaft rotatably supported by the headstock, a chuck fixed to one end of the main shaft, and a chuck provided on the bed. , a lathe comprising a tool rest movable relative to the main shaft in the axial direction and radial direction; , a cutting device provided near the lathe to cut the material fed and positioned by the material stocker; and a supply device provided near the cutting device to supply the cut material to the chuck. A turning machine tool equipped with a material cutting and feeding device featuring: