JP3005935B2 - Turning machine tool with material cutting and feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning machine tool provided with a material cutting and feeding device capable of cutting a long material into a desired length and supplying the material to a lathe.

[0002]

2. Description of the Related Art There are various types of workpieces to be machined by a turning machine tool. In particular, a round material based on a steel material generally uses a cut material obtained by cutting a long material into a desired length. Have been. This cut material is mainly obtained by the following method and supplied to a turning machine tool. The first method is a method of purchasing and storing a cut material previously cut to a desired length, and supplying the cut material to a turning machine tool each time. The second method is a method in which a long material is purchased as it is, cut into a desired length by equipment such as a cutting device, and supplied.

[0003]

However, each of the above methods has the following problems. 1. In the first method, when automatically feeding the cut material to the turning machine tool, a special supply device that can sort and supply the cut materials individually by type is required. In addition, there is an economical problem that material costs are higher than purchasing a long material. 2. In the second method, a cutting device must be provided separately from the turning machine tool, and a large floor area is required in the facility, and a large amount of cost is required to maintain such a device. Was. Also, conventionally, a cutting step of cutting the material with a cutting device,
There has not been a line with the turning process of turning the cut material with a turning machine tool. For this reason, stock materials of various desired lengths that have been cut to various lengths in the material cutting process are stocked, and a necessary cutting material is searched for from the stock in the turning process, and the cut material is used for the turning machine tool. The method of supply was taken.

[0004] Accordingly, the long residence time of the stock material from when the material is cut until it is processed by the turning machine tool is long, and the cutting process is not linked to the turning process. There was a problem that stock was required to some extent and production efficiency was poor. The present invention has been made in order to solve the above problems,
An object of the present invention is to provide a turning machine tool provided with a material cutting and feeding device capable of continuously and efficiently processing a workpiece in a cutting process and a turning process by supplying a long material. It is in.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above problems and achieves the above object. A turning machine tool according to the present invention comprises a bed, a headstock provided on the bed, A spindle rotatably supported by the headstock, a chuck fixed to one end of the spindle and holding a workpiece, and a chuck provided on the bed and at the back of the headstock, with respect to the spindle. a relatively movable in the axial direction and the radial direction, in a lathe provided with a tool rest fitted with a tool for machining a workpiece held by the said chuck, said main shaft
It is provided on the front side of the table, and the long material is parallel to the spindle axis.
While supporting the long material with respect to the main shaft.
From the rear end side of the spindle to the chuck side in the line direction
And material stocker to deliver a predetermined amount I, the material stocker
Provided on the side where the long material in the vicinity is sent out,
A clamp device for fixing a long material, and the clamp device
Provided on the side where the long material in the vicinity is sent out,
The long material in the non-rotating state fixed by the clamp device
A cutting device for cutting with a driven blade, and near the cutting device
Is provided on the side where the long material is sent out, and the cutting is performed.
Gripping hand for gripping the long material tip during cutting by the device
Having a step and the gripping means, in an axial direction with respect to the main shaft.
The moving position of the cutting material is controllable, and the cutting material cut to a predetermined length by the cutting device is moved from the front side of the headstock to a position where the axis of the main spindle coincides with the axis of the cutting material .
A feeder that moves linearly in the radial direction with respect to the main shaft and transfers the cut material to the chuck, so that the cutting device can perform a cutting operation during turning of the cut material transferred to the chuck. It is characterized by being constituted.

[0006]

In the turning machine tool according to the present invention, the headstock
Provided on the front side to support the long material parallel to the spindle axis
The long material in the axial direction with respect to the spindle,
A material stocker that feeds a predetermined amount from the rear end side toward the chuck side is provided. The long material sent out from this material stocker by a predetermined amount is non-rotated by the clamp device.
The workpiece is fixed in a state, and is cut to a desired workpiece length by a cutting device having a driven blade . Cutting, long element
The leading end of the material is gripped by the gripping means of the feeding device.
You. The cut material (cut material), by a supply device, linearly from headstock on the front side in the radial direction with respect to the main axis
After being moved, it is supplied to a chuck provided on the spindle of the lathe, and is subjected to turning. Material stockers, clans
The cutting device, the cutting device and the feeding device are located in front of the headstock.
And they are arranged in order from the rear end side of the main shaft. And a long element
The material is connected to the spindle axis from the rear end of the spindle toward the chuck.
Move parallel and linearly. In this way, the cutting material is continuously obtained from the long material, and the cutting material is sent to the chuck of the main shaft and fixed by the supply device, and the turning process is performed. And no stock of cutting material is required. Further, since the material can be supplied to the chuck without passing through the inside of the main shaft, the long material does not rotate while the main shaft is rotated to process the workpiece. Therefore, compared with the case where the long material is supplied to the chuck through the inside of the main spindle, the vibration of the main spindle during the rotation processing is reduced, and as a result, the processing accuracy of the workpiece is increased.
Further, in the present invention, it is configured such that a cutting operation by the cutting device can be performed during turning of the cut material transferred to the chuck. As described above, by performing the cutting operation by the cutting device while performing the turning by the main spindle, the time required from the cutting of the long material to the processing of the workpiece can be largely reduced as a whole. it can.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these specific embodiments. FIG. 1 is an overall front view showing a turning machine tool provided with a material cutting and feeding device of the present invention, and FIG.
1 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a sectional view taken along the line III-III of FIG.

As shown in FIG. 1, a turning machine tool provided with a material cutting and feeding device according to the present invention comprises an NC lathe 1, a 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 constituting the main body of the NC lathe 1. A first headstock 6 is fixed to one end of the bed 5. In the first headstock 6, a first spindle 7 is rotatably supported. A first chuck 8 is fixed to one end of the first main shaft 7. The first chuck 8 is driven by a chuck cylinder 9 provided at the other end of the first main shaft 7 and holds a workpiece material. The first spindle 7 is driven to rotate by a spindle motor (not shown) provided on the first headstock 6 or the bed 5.

On the bed 5, an axis (Z) of the first spindle 7 is provided.
A Z-axis guide 13 is provided in the (axial) direction, and a first saddle 11 that is guided by the Z-axis guides 13 and is movable in the Z-axis direction is provided. This first saddle 11
The position and feed in the Z-axis direction are controlled by an NC device (not shown) via a servomotor, a ball screw, and the like. The first saddle 11 has a diameter (X
An X-axis guide 14 is provided in the (axial) direction, 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 servomotor 15, a ball screw, and the like. A first tool post 10 is fixed on the first cross slide 12. This first turret 10
A turret 16 for mounting a tool T for processing a material as a workpiece is pivotally indexable. Therefore, the processing of the material of the workpiece attached to the first spindle 7 is performed by the control movement of the first tool post in the X-axis and Z-axis directions.

A second headstock 17 and a second tool rest 1 are placed on the bed 5 so as to face the first headstock 6 and the first tool rest 10.
8 are provided. The structure of the second headstock 17 and the second tool rest 18 is the same as that of the first headstock 6 and the first tool rest except that the second headstock 17 is guided by the headstock guide 19 and is movable in the Z-axis direction. Only the symmetrical arrangement with the base 10 is substantially the same as the first headstock 6 and the first tool rest 10, respectively, and the description is 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 configuration of the NC lathe according to the embodiment has been described above. The first headstock 6 and the first tool rest 10 and the like perform the first step (surface) processing, and the second headstock 17 and the second tool rest. 18 and the like, the processing of the second step (back side) is performed by N
It is a C lathe. However, the present invention is not limited to this configuration, and may be a normal two-axis control NC lathe.

Next, the material stocker 2 will be described. Support stand 2
Reference numeral 1 denotes a base constituting 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. The support 21 is provided with a material positioning means (not shown). As the material positioning means, a known bar positioning means is used, which can feed out the material 23 in the axial direction and position the material 23 in the axial direction.

Material stocker 2 configured as described above
Is provided on the side of the first headstock 6 to support the elongated material 23 in parallel with the axis of the first spindle 7,
Is sent out from the chuck cylinder 9 side to the first chuck 8 side and positioned, 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 sent out by the material stocker 2 is disposed on the bed 5. The clamp device 31 includes, for example, a V-shaped receiving member 32, a cylinder 33, a clamper 34, and the like. The operation of the cylinder 33 causes the clamper 34 to press and fix the material 23 to the receiving member 32. 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. On the base 24,
Guide 25 is provided, guided by this guide 25,
A saw head 26 that is movable in the radial direction of the material 23 is provided. The position and feed of the saw head 26 are controlled via a servomotor 27 and a ball screw 28. A circular saw blade 29, which is rotationally driven by a motor 30, is rotatably supported on the saw head 26 around an axis parallel to the axis of the material 23. With the cutting device 3 configured as described above, the material 23 fixed to the clamp device 31 is cut to a desired length. Although the cutting device 3 of this embodiment is a cutting device using the circular saw blade 29, any cutting device that can cut the raw material 23 may be used. For example, a cutting device using a band saw blade may be used.

Next, the supply device 4 will be described. The supply device 4 is provided below the first headstock 6 at a position facing the material stocker 2 with the cutting device 3 interposed therebetween. The bed 5 is provided with a guide 35 extending from below the first headstock 6 to below the first chuck 8 in parallel with the first spindle 7, and guided by the guide 35 in the axial direction of the first spindle 7. A movable base 36 is provided. This base 36
The moving position is controlled via a servomotor (not shown) and the ball screw 37. A cylinder 38 is provided on the base 36. A hand 40 is provided at the tip of a piston 39 of the cylinder 38. The hand 40 is for gripping the material 23 and the like. Since the general hand 40 is used, the description is omitted. A guide 41 is attached between the cylinder 38 and the hand 40. The guide 41 guides the movement of the hand 40 to the center of the first chuck 8 by the driving of the cylinder 38, and also guides the hand 40 and the cutting. The material 23a cut by the device 3 is supported. The raw material 2 cut by the cutting device 3 by the feeding device 4 configured as described above.
3a is supplied to the first chuck 8 as a workpiece. In addition, the supply device 4 of this embodiment is configured to be attached to the lower part of the NC lathe 1, but is not limited to this, and the material 23 a cut by the cutting device 3 is directly supplied to the first chuck 8. Any form may be used as long as it is performed, and a commercially available robot or the like may be attached.

Below the first chuck 8, there is provided an opening / closing cover 42 for partitioning the turning area of the NC lathe 1 from the cutting device 3 and the supply device 4. This opening / closing cover 42
Prevents the chips, coolant and the like generated during the turning process 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 1, and is configured to swing and open around the hinge 44 by the operation of the eye-shaped cylinder 43. The NC lathe 1, the stocker 2, the cutting device 3, the supply device 4, the opening / closing cover 42, and the like having the above-described configuration are collectively controlled by a numerical controller (not shown).

Next, the operation of the present invention will be described. The description will be made on the assumption that data necessary for processing such as the length of the workpiece and the NC processing program are stored in advance in the numerical controller, and that the setup of the tool T and the chuck jaws are all completed. The worker is the guide roller 22 of the material stocker 2.
The long material 23 is placed on the top. When the material 23 is placed, a series of processing operations described below are performed by the numerical controller. The material 23 is moved to the circular saw blade 29 by the material positioning means.
From the position to the supply device 4 side so as to protrude by a desired length of the workpiece. When the positioning is completed, the blank 23 is fixed by the clamp device 31. At the same time, the material 23 is gripped by the hand 40 of the supply device 4.
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 is returned to the position shown in the figure, and the rotation of the circular saw blade 29 is stopped. This is material 23
, Which is usually performed during turning 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 opening / closing 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 servomotor, a ball screw 37 and the like. Next, the cylinder 40 is driven to move the hand 40 to a position 4b where the axis of the material 23a gripped by the hand 40 and the axis of the first main shaft 7 coincide. Supply device 4
The material 23a is moved toward the chuck 8 and
The chuck 8 causes the chuck 8 to hold it. At the same time, the hand 40 is released, and the entire supply device 4 is returned to the position indicated by the solid line in FIGS. After returning to the original position, the opening / closing cover 42 is closed. This completes the material supply operation of the supply device 4.

Material 23a held by first chuck 8
Is processed in the first step by the first headstock 6, the first tool rest 10, and the like. During the processing in the first step, the above-described cutting operation is performed, and the next material is held by the hand 40 and is on standby. When the processing in the first step is completed, the processed material attached to the first chuck 8 is
The workpiece is transferred to the chuck 45 and subjected to a second process. At the same time, the next material is supplied to the first chuck 8 by the material supply operation described above. By setting the long material 23 on the material stocker 2 by the above operation, the material 23 is cut into a desired length and supplied to the NC lathe 1 so that the workpiece is consistently processed from the long material. Can be automatically processed continuously.

Although this embodiment has been described on the premise that the circular saw blade of the cutting device advances and retreats in the radial direction of the material, the cutting may be performed in an inclined direction depending on the shape of the workpiece. However, the present invention is not limited to this. Further, if a vibration isolator is provided between the NC lathe main body and the cutting device in order to avoid an adverse effect such as vibration when the cutting is performed during the turning, more favorable turning can be performed.

[0021]

Since the turning machine tool according to 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 into a desired length by a continuous operation and immediately supplied to a lathe, so that it is not necessary to stock the cut material. Also, without passing the spindle, the front side of the headstock
Since the workpiece can be supplied to the chuck from above , the long material does not rotate during the processing of the workpiece. Therefore,
Vibration of the main shaft during processing of the workpiece can be reduced. Further, by cutting the next material during the turning, the processing time can be reduced, and the production efficiency is improved. In particular, the present invention is more effective in an opposed spindle type NC lathe. Also, just supply the long material directly,
Cutting and turning are continuously and automatically processed, and setup time is reduced. In addition, since the cutting device and the supply device are attached to the lathe and integrally formed, the size is reduced, and the required floor area is reduced as compared with a case where the cutting device and the feeding device are conventionally separately and independently configured. And when cutting, the long material is non-rotating
Rotate long material as it is cut with a driven knife
There is no need for any supporting equipment. Also supply device
Moves axially and radially with respect to the main shaft
It is possible and the movement position can be controlled in the spindle axis direction,
Supply the cut material cut to the desired length to the chuck.
Can be.

[Brief description of the drawings]

FIG. 1 is an overall front view showing a turning machine tool provided with a material cutting and feeding device of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 ... NC lathe 2 ... Material stocker 3 ... Cutting device 4 ... Supplying device 5 ... Bed 6 ... First headstock 7 ... First spindle 8 ... First chuck 9 ... Chuck cylinder 10 ... First turret 16 ... Turret 23 ... Material 31… Clamp device 42… Open / close cover

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B23P 23/02 B23B 3/16 B23B 11/00 B23B 15/00

Claims (1)

(57) [Claims] 1. A bed, a headstock provided on the bed, a spindle rotatably supported by the headstock, a chuck fixed to one end of the spindle, and gripping a workpiece. A tool rest provided on the bed and on the back side of the headstock, which is relatively movable in the axial direction and the radial direction with respect to the spindle, and on which a tool for processing a workpiece gripped by the chuck is mounted. A lathe provided on the front side of the headstock , wherein a long material is
While supporting in parallel with the line, the long material is attached to the main shaft.
In the axial direction, the chuck is positioned from the rear end of the spindle.
A stocker for feeding a predetermined amount toward the side, and a side where the long stock near the stocker is fed out.
And a clamp device for fixing the long material, and a side near the clamp device to which the long material is sent out.
And a non-rotating state fixed by the clamp device.
A cutting device for cutting the long material with a driven blade, and a cutting device near the cutting device on the side where the long material is fed out.
The long material tip is cut during cutting by the cutting device.
And gripping means for gripping a has the gripping means, the movement in the axial direction with respect to the main axis
The position is controllable, and the cutting material cut to a predetermined length by the cutting device is moved from the front side of the headstock to a position where the axis of the spindle and the axis of the cutting material match.
A supply device that moves linearly in the radial direction with respect to the main shaft and transfers the cut material to the chuck, and performs a cutting operation by the cutting device during turning of the cut material transferred to the chuck. Turning machine tool provided with a material cutting and feeding device characterized by being performed.