JPH01121106A - Combined machining machine tool - Google Patents

Abstract

PURPOSE:To enable the machine tool to machine a long size work without enlarging the dimensions of the machine tool by installing work spindles provided with through holes extending along their axes in Z axis direction to first and second headstocks so that the work spindles can freely rotate and are driven so as to align their axes with each other. CONSTITUTION:Work spindles 3a, 5a are provided respectively in first and second headstocks 3, 5 which are opposed and at least one of which can move in Z axis direction so that the work spindles can be freely rotated and driven so as to align their axes CT1, CT2 with each other. Through holes 3h, 5h extending along the axes CT1, CT2 in Z axis direction are formed in the work spindles 3a, 5a so that a long size work is inserted into the through holes by bar feeders 43 and held by chucks 3b, 5b, then machined. Thus, a long size work exceeding the distance between the two work spindles can be machined without enlarging the whole of the combined machining machine tool.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention provides a multi-tasking machine tool capable of machining a workpiece that is longer than the distance between two opposing workpiece spindles without increasing its size. Regarding.

(b), Prior Art Recently, a multi-tasking machine tool having two opposing workpiece spins 1 to 1 has been proposed. Accordingly, both spindles are moved relative to each other, and the workpiece is held between both spindles via a chuck or the like. In this state, both workpiece spindles are driven to rotate synchronously with the workpiece, and a predetermined cutting process is performed on the workpiece.

(C) 0 Problems to be Solved by the Invention However, with this, the length of the workpiece that can be machined is determined by the distance between the two workpiece spindles, and it is difficult to hold and process long workpieces longer than this distance. I can't. For this reason, when using a multi-tasking machine tool to process long workpieces, the movement stroke of the spindles must be adjusted so that the distance between the two workpiece spindles can be increased according to the workpiece size. Therefore, there was a problem that the entire multitasking machine tool became larger.

In view of the above circumstances, an object of the present invention is to provide a combined power U-machine tool that can process a long workpiece that is longer than the distance between two opposing workpiece spindles without increasing the size. do.

(d) Means for solving the zero problem, that is, the present invention provides
The first and second headstocks (3, 5
), and the work spindles (3a, 5a) are mounted on the first and second headstocks (3, 5), respectively, with their axes (
The work spindles (3a, 5a) are provided with through holes (3h, 5h), respectively, in the work spindles (3a, 5a).
It is configured so as to penetrate in the Z-axis direction along the axis (CTI, Cr2) of a).

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. r (e) below
The same applies to the column ``, action''.

(e) 0 action With the above configuration, the work spindles (3a, 5a)
When processing a long workpiece (31) with a distance greater than or equal to
, 5a) through hole (3h.

5h).

(f), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a front view showing an embodiment of a multi-tasking machine tool according to the present invention, and FIG. 2 is a left side view of FIG. 1.

FIG. 3 is a front view showing a loading device installed on the right side of the multi-tasking machine tool shown in FIG. 1.

Fig. 4 is a diagram showing the main parts of the loading device, Figs. 5 to 13 are process diagrams showing how a workpiece is processed using an embodiment of the present invention, and Figs. 14 to 19 are the main parts of the loading device. FIG. 20 is a process diagram showing how a long workpiece is processed using an embodiment of the invention, and FIG. 20 is a diagram showing another example of the hand of the loading device.

As shown in FIG. 1, the multitasking machine tool 1 has a machine body 2, and a headstock 3.5 is mounted on the machine body 2, and a spindle 3a provided on the headstock 3.5, which will be described later. , 5a are opposed to each other with their axes CTI and Cr2 aligned, and are movably driven in the directions of arrows A and B (ie, the Z-axis direction).

The spindles 3a and 5a are mounted on the j-axis stand 3.5, respectively, with arrows C and 5a centered on their respective axes CTI and Cr2.
The spindles 3a and 5a are provided with through holes 3h and 5h, respectively, in the direction of arrows A and B (i.e., along the axes CTI and Cr2 of the spindles 3a and 5a). , Z-axis direction). Further, chucks 3b and 5b are attached to the spindles 3a and 5a, respectively.

Furthermore, as shown in FIG. 2, on the machine body 2, there are two carriages 6a (one carriage in FIG. (Only shown in FIG. On the carriage 6a is a turret main body 6b that constitutes the turret 6.
However, in the direction of arrows A and B, that is, in the direction of arrow E, which is perpendicular to the Z-axis direction,
They are each provided in a form that can be freely moved and driven in the F direction.

In addition, each tool rest main body 6b is provided with a turret-shaped tool mounting portion 6C that can be rotatably driven to which a plurality of tools can be mounted.

By the way, two loading devices 9A and 9B are installed on the front surface 2C of the machine body 2 in FIG.
has a body 10, an arm 17, a hand 19, etc. That is, a body 10 is attached to the front surface 2c of the fuselage 2 shown in FIG. 3, and the body 10 has a casing 11 formed in a box shape. Inside the casing 11, an arm-swivel cylinder 12 is pivotally mounted via a pin 12c, and a rod 12a is supported by the arm-swivel cylinder 12 in such a manner that it can protrude and retract in the directions of arrows G and H. There is. A connecting member 1 is attached to the tip end of the rod 12a in the figure.
2b is attached, and the arm rotation cylinder 12
A lever support portion 11a of the casing 11 is provided above the obstetric section in FIG. The lever support portion 11a includes
The lever 13 is supported via a pin 13b so as to be able to freely rotate in the directions of the arrows (■) and (J), and at the center of the lever 13 in FIG. 12b is pivotally mounted via a pin 13a. Furthermore, a roller 1 is attached to the right end of the lever 13 in the figure.
3c is provided in a rotatable manner.

Further, a bearing portion 11b of the casing 11 is provided above the arm rotation cylinder 12 in FIG.
As shown in FIG. 4, the bearing part 11b has an engagement shaft 15 with its right end 15b protruding outside the casing 11, and with the shaft center CT3 of the shaft 15 as the center, as shown by the arrow.
It is supported rotatably in the L direction. An engaging member 16 is attached to the left end 15a of the engaging shaft 15 in the drawing.
6 through the boss portion 16a, and the boss portion 16
A plate 16b constituting the engagement member 16 is provided in a manner projecting in a direction perpendicular to the axis CT3 of the engagement shaft 15. The plate 16b has an engagement groove 16c.
is bored toward the axis CT3 of the engagement shaft 15,
A roller 13c of the lever 13 is fitted into and engaged with the engagement groove 16c in a freely rolling manner.

Further, an arm 1 is attached to the right end portion 15b of the engagement shaft 15 in FIG.
A hand 19 is provided at the tip of the arm 17 in FIG.

The hand 19 has a main body 20 formed in a box shape, and the main body 20 includes claws 21a for gripping a workpiece,
21b is provided. The claw parts 21a, 21b are drive cylinders 22A, 22B and claws 25a, 25b, respectively.
Two drive cylinders 22A and 22B are provided within the main body 20. drive cylinder 22A,
22B are a support rod 22a and a piston 22b, respectively.
and a cylinder 22c, etc., and the drive cylinder 22
The support rods 22a, 2213 are provided in such a way that the upper and lower ends of the support rod 22a in FIG. 3 are connected to the upper plate 20a and lower plate 20b of the main body 2o, respectively. A piston 22b is fixed to the center of each support rod 22a, and a cylinder 22c is attached to each support rod 22a. It is provided in such a way that it can move in the vertical direction in FIG. 3 along the line 22a.

Inside the cylinders 22c, 22c, an oil chamber 22d is formed to cover the support rod 22a, and a head portion 22e and a bottom portion 22f of each cylinder 22c are connected to a hydraulic system. A pipe (not shown) is connected to the oil chamber 22d in a manner capable of supplying pressure oil. Note that the cylinder 22 of the drive cylinder 22A
A plurality of teeth 22g are located on the lower side of FIG.
, are formed at predetermined intervals in the N direction, and a rotatably provided gear 27 meshes with these teeth 22g.

Furthermore, a support rod 23 formed in an inverted U shape is provided on the upper side surface of the cylinder 22c of the drive cylinder 22A in FIG. A bent portion 23a is formed on the rod 23 so as to protrude from the main body 20 in the direction of arrow N. A claw 25a is provided at the tip of the bent portion 23a in the drawing, and a workpiece holding portion 25c is formed in the claw 25a in a V-shape perpendicular to the plane of the third drawing.

Further, a support rod 26 is provided on the upper side surface of the cylinder 22C of the movable cylinder 22B in FIG. , a claw 25b is mounted so as to protrude from the main body 20 in the direction of arrow N and to face the claw 25a.

A workpiece holding portion 25c is formed in the claw 25b in a V-shape in a direction perpendicular to the plane of FIG. Part 2
6a is provided facing the gear 27.

Note that the stepped portion 26a has a plurality of teeth 26b indicated by arrows M,
The teeth 26b are formed at predetermined intervals in the N direction.
meshes with gear 27.

Furthermore, the machine body 2 of the multitasking machine tool 1 shown in FIG.
A cover 35 is provided to cover the machine body 2, and bar feeders 43 and 43 are provided on both left and right sides of the multi-tasking machine tool in FIG. Chuck 3 through holes 3h and 5h
b, 5b.

Since the multi-tasking machine tool 1 has the above-described configuration, in order to machine a workpiece, the workpiece 31 to be machined is first mounted on the chuck 3b using the loading device 9A on the left side of FIG. Let's do it. To do this, the operator inserts the workpiece 31 between the claws 25a and 25b of the hand 19 positioned at the standby position X1 shown by the solid line in FIG. Then, pressure oil is supplied into the cylinder 22c from the bottom part 22f side of the drive cylinder 22A shown in FIG. 3, and the pressure oil in the oil chamber 22d is trained from the head part 22e side. At the same time, pressure oil is supplied into the cylinder 22c from the head portion 22e side of the drive cylinder 22B, and pressure oil in the oil chamber 22d is drained from the bottom portion 22f side. Then, the cylinder 22c of the drive cylinder 22A, together with the support rod 23, is pushed down by the supplied pressure oil and meshes with the gear 27, and its inner peripheral surface in FIG.
It moves in the direction of the arrow M along the support rod F 22 a while making it evenly contact with the support rod F 22 a. At the same time, the drive cylinder 22B
The cylinder 22C, together with the support rod 26, is pushed up by the supplied pressure oil and meshes with the gear 27, and slides along the support rod 22a with its inner peripheral surface in FIG. 3 in sliding contact with the piston 22b. and move in the direction of arrow N. Then, the claw 25a attached to the support rod 23 moves in the direction of arrow M in FIG.
The claw 25 attached to the support rod 26 moves in the direction
b moves in the direction of arrow N, and the workpiece 31 is moved by the claws 25a, 2.
5b. In addition, winter melon 2
5a and 25b move synchronously at a constant speed in the directions of arrows M and N by the action of gear 27 and teeth 22g and 26b. Therefore, the workpiece 31 is accurately gripped at the intermediate position 1a of the claws 25a and 25b in the directions of the arrows M and N.

In this way, when the workpiece 31 is gripped by the rope inking device 9A as shown in FIG. 5, the arm rotation cylinder 12 of the loading device 9A shown in FIG.
, the rod 12a is moved back together with the connecting member 12b in the direction of arrow H, and positioned at the position shown by the solid line in the figure. Then, the lever 13 is pulled by the connecting member 12b and pivots in the direction of arrow J about the pin 13b. When the lever 13 turns in the direction of arrow J, the roller 13c provided at the right end of the lever 13 in the figure also turns in the direction of arrow J while rolling in the engagement groove 16c formed in the engagement member 16. . Then, the engaging member 16 engages the roller 1
．． 3 c, the engagement shaft 1 is pressed downward in the figure.
5, the shaft 15 pivots in the direction of the arrow about the axis CT3 of the shaft 15. As a result, Han 1-19 has the workpiece 31.
While gripping the chuck 3b, the workpiece holder swings in the direction of the arrow via the arm 17, and the workpiece holder facing the chuck 3b shown in FIG. 1 is positioned at the transfer position X2.

Next, open the chuck 3b, and in that state move the upper spindle stand 3 to Z.
A drive motor (not shown) for driving in the axial direction (in the directions of arrows A and B) is driven with low torque to move the headstock 3 together with the chuck 3b in the direction of arrow B toward the hunt 19. Then, the chuck 3b comes into contact with the left end of the workpiece 31 held by the hand 19 in FIG. 6, and further presses the workpiece 31 in the direction of arrow B. At this time, since the drive motor 3 that moves the headstock 3 in the direction of arrow B is driven with low torque, the force pressing the workpiece 31 in the direction of arrow B via the headstock 3 or the chuck 3b is weak. This pressing does not cause deformation of the hunt 19 etc. due to force.

When the workpiece 31 is pressed against the chuck 3b in this manner, the chuck 3b is closed and the workpiece 31 is held by the chuck 3b. Next, in this state, from the hem 1 to 22g of the drive cylinder 22A shown in FIG.
Pressure oil is supplied into the cylinder 22c, and the oil that has been supplied into the cylinder 22c is drained through the bottom portion 22f of the drive cylinder 22A and the head portion 22g of the drive cylinder 22B. Then, the cylinder 22c of the drive cylinder 22A is pushed up together with the support rod 23 by the pressure oil supplied into the cylinder 22c, and the gear 27 is pushed up.
The piston 22a moves along the support rod 22a in the direction of the arrow N while its inner periphery in FIG. 3 is in sliding contact with the piston 22b. At the same time, the cylinder 22c of the drive cylinder 22B, together with the support rod 26, is pushed down by the supplied pressure oil and meshes with the gear 27, and its inner peripheral surface in FIG. 3 is in sliding contact with the piston 22b. , moves along the support rod 22a in the direction of arrow 1'l1M.

Then, the claws 25a and 25b synchronously move in the directions of arrows N and M, and the gripping relationship between the workpiece 31 and the claws 25a and 25b is released.

In this way, the work 31 is held by the chuck 3b shown in FIG. 6, and the work 31 and the loading device 9A
When the grip relationship with the hand 19 is released, the drive motor for moving the headstock 3 in the Z-axis direction is driven to move the headstock 3 together with the chuck 3b in a direction away from the hand 19, that is, Move it a predetermined distance in the direction of the arrow. Further, in this state, the arm rotation cylinder 12 shown in FIG. 3 is driven to move the rod 12a to the connecting member 12.
b and project in the direction of arrow G. Then lever 13
is pushed by the connecting member 12b, and the pin 13b
Turn around in the direction of the arrow. When the lever 13 rotates in the direction of the arrow (■), the roller 13c of the lever 13 also rotates in the direction of the arrow (■) while rolling within the engagement groove 16c of the engagement member 16. Then, the engagement member 16 is pushed upward in the figure by the roller 13c, and turns together with the engagement shaft 15 in the direction indicated by the arrow about the axis CT3 of the shaft 15. As a result, the hand 19 swings in the direction of the arrow via the arm 17 and is positioned at the standby position X1 shown by the solid line in FIG.

Next, the chuck 3b shown in FIG. 8 is rotated together with the workpiece 31, and in this state, the tool rest 6 corresponding to the spindle 3a is moved along with the tool 33 in the direction of arrow E in FIG. 2 and in the direction of arrows A and B in FIG. By appropriately moving and driving the tool 33 in the Z-axis direction, the workpiece 31 is processed in the first step.

During the machining, a workpiece 31 to be machined next is supplied to the hand 19 of the loading device 9A shown in FIG. 8, and the workpiece 31 is gripped.

In this way, as shown on the left side of FIG. 9, when the first process has been performed on the workpiece 31, the spindle 6-base 3 is moved along with the chuck 3b by a predetermined distance in the direction of arrow B, and the headstock 5 With the chuck 5b released, move the headstock 3. by a predetermined distance in the direction of the arrow.
5 to approach. Then, the right end in FIG. 10 of the workpiece 31 that has undergone the first process and is held by the chuck 3b is moved to the chuck 5.
inserted into b.

Next, the chuck 5b is closed to hold the right end of the workpiece 31 in the figure, and the chuck 3b is further opened to hold the chuck 31.
The holding relationship between b and work 31 is released. In this state, the headstock 3 is moved a predetermined distance in the direction of arrow A together with the chuck 3b as shown in FIG. The workpiece 31 is transferred between the headstocks 3.5 and 3.5 by a predetermined distance in the direction.

Next, in this state, the chuck 5b is rotated together with the workpiece 31, and the tool rest 6 corresponding to the spindle 5a is moved along with the tool 33 in the direction of arrow E in FIG. 2 and arrow A in FIG.
By appropriately moving and driving in the B direction (Z-axis direction),
As shown in FIG. 12, the workpiece 31 is processed in a second step using the tool 33. As shown in FIG. During this time, the workpiece 31 is supplied to the chuck 3b of the headstock 3 using the loading device 9A, as shown in FIG.
1 is processed in the second step.

In this way, when the second process has been performed on the workpiece 31 held by the chuck 5b, the arm rotation cylinder 12 of the loading device 9B is driven to move the rod 12a backward in the direction of arrow H. Arm 1
7 together with the hand 19, the workpiece holder facing the chuck 5b shown in FIG. 13 is moved to the transfer position X4.
position. In that state, move the headstock 5 to the chuck 5.
While holding the machined workpiece 31 in b, it is driven to move in the direction of the arrow. Then, the workpiece 31 is positioned at the position inserted between the claws 25a and 25b of the hand 19. In this state, the claws 25a and 25b are closed and the workpiece 31 is gripped. Next, the holding relationship between the workpiece 31 and the chuck 5b is released, and in this state, the headstock 5 is moved together with the chuck 5b in the direction of arrow B, and the hand 19 is moved together with the processed workpiece 31 in the direction of the arrow in FIG. It is rotated and positioned at the standby position X3 shown by the solid line in FIG. In that state, the processed workpiece 31 and the loading device 9
Release the grip relationship with the hand 19 of B, and remove the workpiece 31.
from the hand 19.

In the embodiment described above, when transferring the workpiece 31 between the headstocks 3.5, the workpiece 31 is transferred between the headstocks 3.5 by moving the headstock 3 in the direction of arrow B and the headstock 5 in the direction of the arrow. , the case where the headstocks 3.5 are brought closer together has been described, but the method of bringing the headstocks 3.5 closer together is not limited to 29, and any method that allows these headstocks 3.5 to approach each other without any hindrance is possible. , by any method. For example, by moving only the headstock 5 in the direction of the arrow toward the headstock 3 without moving the headstock 3 in the two-axis directions (directions of arrows A and B), these headstocks 3.5 The workpiece 31 may be received and transferred while being brought close to each other. In addition, on the contrary, by moving only the headstock 3 in the direction of arrow B toward the spindle=19-base 5 without moving the headstock 5 in the Z-axis direction, the headstock 3.5 can be moved. You can also bring them closer together.

Note that when processing a particularly long workpiece 31, the loading devices 9A and 9B are positioned at standby positions X1 and X3, respectively, as shown in FIG.
．． Align 19. Further, the work 31 is placed on the chuck 3.
The headstock 3 is moved in the direction of arrow A, and the headstock 5 is moved in the direction of arrow B, so that the distance between chucks 3b and 5b can be adjusted to the direction of arrows A and B of the workpiece 31.
Make it wider by a predetermined distance than the length in the direction. next.

In this state, each arm 17.17 of the loading devices 9A, 9B shown in FIG. 3 is synchronously rotated in the direction of the arrow together with the hand 19.19.

Then, hand 19.19, as shown in FIG.
The workpiece 31, which is positioned opposite the chucks 3b and 5b of the headstock 3.5 and gripped by the hunt 19.1.9, is positioned so that the chucks 3b and 5b are open. In this state, the headstock 3 and the chuck 3b are moved in the direction of arrow B, and the headstock 5 is moved together with the chuck 5b in the direction of the arrow, and the workpiece 31 is held between the chucks 3b and 5b. Next, the small parts 25a and 25b of each handle 1-19 of the loading devices 9A and 9B are
is released to release the grasping relationship between the hands 19 and 19 and the workpiece 31. Further, in this state, the arms 17 and 17 of the loading devices 9A and 9B shown in FIG. 3 are rotated together with the respective hands 19 and 19 in the direction of the arrow, and returned to the standby positions X1 and X3 shown in FIG. 14. I'll let you.

In this way, when the long workpiece 31 is held by the chucks 3b and 5b, the chucks 3b and 5b are rotated synchronously with the workpiece 31. Next, in this state, the tool rest 6.6 shown in FIG. 2 is moved and driven in the directions of arrows E and F and in the directions of arrows A and B in FIG. The workpiece 3 is
1 into a predetermined shape.

In this way, when the long workpiece 31 is machined into a predetermined shape as shown in FIG. 17, the machined workpiece 31
As shown in FIG. 18, the loading devices 9A, 9
B is gripped by each hand 19.19, and in this state, the headstock 3 is moved in the direction of the arrow and the headstock 5 is moved in the direction of the arrow B, so that the headstock 3.5 is retracted from the workpiece 31. Next, each hand 19. of the loading devices 9A, 9B.
19 is rotated synchronously with the workpiece 31 in the direction of the arrow in FIG. 3, and positioned at standby positions X1 and X3 shown in FIG. 14. In this state, the grasping relationship between each hand 19, 19 and the processed workpiece 31 is released, the workpiece 31 is removed, and the workpiece 31 is carried out to a predetermined location.

In addition, in the above-mentioned embodiment, the hand 1≦] is replaced by the work holding part 2 formed in a figure 7 shape, as shown in FIG.
5c, 25c are provided so that the claws 25a and 25b can be driven to open and close freely, and the workpiece 31 is held between the workpiece holding parts 25c of the claws 25a and 25b. 19 is limited to this
Of course, any configuration may be used as long as it can securely grip the workpiece 3. For example, hand 19
Alternatively, as shown in FIG. 20, a roller may be rotatably provided at the tip of the claw. Hereinafter, the hand 19 having the roller will be explained based on FIG. 20.

As shown in FIG. 20, the hunt 19 has a main body 37 provided at the tip of the arm 17 shown in FIG.
A drive cylinder 39 is provided within the main body 37 .

A rod 39a is supported by the drive cylinder 39 so as to be able to protrude and retract in the directions of arrows i-' and Q, which are left and right directions in the figure, and an engagement member 40 is attached to the tip of the rod 39a.

A groove 40a is formed in the engagement member 40.
Rollers 41k and 41rn, which are rotatably supported by claws 41a and 41b, which will be described later, are slidably engaged with a. The claws 41a and 41b are connected to the main body 37 by pins 41c and 4.
．． The rollers 4.1e and 4.1f are provided at the tips of the claws 4.1e and 41b, respectively, through pins 41h and 41i. It is provided so that it can be rotated freely. Also, in Figure 20, 7
The main body 37 is rotatable via a roller 41g or a pin 41j, and the left end in the figure is connected to the main body 17 by an arrow P.
It is provided in a shape that protrudes in the direction.

Rope ink device 9A having the above-mentioned handles 1 to 9,
9B and the bar feeders 43 and 43 installed on both left and right sides of the multitasking machine tool 1 in FIG. That is, to perform bar feeder processing, the headstock 3.5 shown in Fig. 1 is moved and driven in the directions of arrows A and B, respectively, and the chuck 3b is moved by the hand 19 of the loading device 9A.
In addition, the chuck 5b is positioned a predetermined distance away from the hunt 19 of the loading device 9-3 in the direction of arrow B. In this state, the bar feeder 43 shown in FIG.
．． 43 to send out the workpieces 31 and 31 through the spindles 3a and 5a toward the chucks 3b and 5b, respectively.

These tips are set so that they protrude by predetermined lengths from the chuck 3b in the direction of arrow B and from the chuck 5b in the direction of the arrow.

Next, by rotationally driving the spindles 3a and 5a, the workpiece 31.
31, and move each tool rest 6 shown in FIG. 2 along with the tools 3;
The outer diameter portion of the workpiece 31, 31 shown in FIG. 1 is machined by moving in the direction shown in FIG.

In this way, when the machining of the workpieces 31 and 31 is completed, the workpieces 31 and 31 are cut out and the workpieces 31 and 31 are cut out.
．． 31 processed parts are separated from other unprocessed parts. To do this, first move the headstock 3 shown in FIG. 1 together with the workpiece 31 in the directions of arrows A and B, and move the headstock 5 together with the workpiece 31 in the directions of arrows A and B. The portions are positioned to face each of the handles 1 to 19, 19 (see FIG. 20) of the loading devices 9A, 9B, respectively. In addition, each tool rest 6 shown in FIG.
3 and the direction perpendicular to the plane of the paper in the figure, that is, arrows A and B in Figure 1.
Each tool 33 is positioned at a position facing the portion of the workpiece 31.31 to be cut.

Next, the drive cylinder of each hand 19 shown in FIG.
9 to project the rods 39a, 39a together with the engagement members 4υ, 40 in the direction of arrow P.

Then, the claws 41a, 4lb of each hunt]9 are pushed by the rod 39a through the rollers 41k, 4-1m and the groove 40a of the engaging member 40, and the bins 41c, 41
It is opened by turning in the direction of arrow S around d.

In this state, the arms 17 of the loading devices a9A and 9B are rotated together with the hands 19 and 19 in the direction of the arrow, and the workpieces 31 and 4 shown in FIG. Each processed i'a+ of 31 is engaged with an adult. In this state, by moving the drive cylinder 39 of each hand 19 shown in FIG.
9a, 39a are retreated in the direction of arrow Q together with the engaging member 40.40. Then, the claws 41a, 41b are pulled by the rollers 1-39a through the rollers 41k, 41m and the groove 40a of the engaging member 40, and the pins 41c, 41b are pulled by the rollers 1-39a.
．． Turn around Ld in the direction of arrow R. Then, the claw 41
a, 41b, each roller 41e, 41f, or the workpiece 31.
31, and further each workpiece 31 is moved to the roller 41.
By pressing in the g direction, the work 31 is moved to the rollers 41a, 41.
Attach it between f and 41g.

In this way, each machined part of the workpiece 31 or each hand 19
1, the spindles 3a and 5a shown in FIG. 1 are rotated together with the workpiece 31.31, and the tool rest 6.6 is rotated along with the yellow cutting tool 33.33 in the direction of the arrow E in FIG. Works 3J, 31
and separate each processed portion of the workpiece 31.31 from other unprocessed portions. At this time, the workpieces 31 and 31 are attached to the rollers 4 of each hunt 19 shown in FIG.
Since the spindles 1e, 41 and 41g are rotatably supported, the rotation of the spindles 3a and 5a is caused by the hand 19.
The cutting off of each workpiece 31 is carried out without any problem. Moreover, at this time, the processed parts of each workpiece 31 are supported by handles 19 to 19 in such a manner that movement in the directions of arrows A and B is restrained, so that the processed parts may fall off from the handle 19. There is no such thing.

After the processed parts of each workpiece 31 are separated, the loading devices 9A and 9B shown in FIG.
Each arm 17.17 of the work 3 to the hunt 19.19
1. With the machined part 1.31 supported, the hands 19 are rotated in the direction of the arrow to position each hand 19 at the standby positions X1 and X3 shown in FIG. Next, the claws 41a and 4-1b of the hands 19 of the loading devices 9A and 9B are released to release the supporting relationship between the hands 19.19 and the processed portion of the workpiece 31.31, and the processed portion is removed. are removed from each hunt 19 and carried out to a predetermined location.

When the processed portion of each workpiece 31 has been carried out, the bar feeder 43.43 shown in FIG.
a to the chucks 3b and 5b, respectively, to continue the predetermined hafida caroe.

Next, the addition of the elongated workpiece 31 will be explained. That is, in order to process the long workpiece 31, the bar feeder 43 shown in FIG.
Send it out toward the chuck 3b through the through hole 3h,
The tip is set so as to protrude from the chuck 3b by a predetermined length in the direction of arrow B. In that state, chuck 3
A predetermined process is performed on the tip of the workpiece 31 protruding from b.

After the tip of the long workpiece 31 has been machined in this way, the workpiece receiver explained based on FIG. Pull it out in the direction and process the part. To do this, the headstock 3 shown in FIG. 1 is moved along with the chuck 3b by a predetermined distance in the direction of arrow B, and the headstock 5 is moved a fixed distance 19" in the direction of arrow A with the chuck 5b opened. The headstock 3.5 is moved closer to the tip M of the workpiece 31 held by the chuck 3b.
Insert IS into Nayak 5b. Next, the chuck 5b is closed to hold the tip of the workpiece 31, and the chuck 3b is opened. In that state, move the headstock 3 to the chuck 3.
While moving it a predetermined distance in the direction of the arrow with b,
The headstock 5 is moved a predetermined distance in the direction of arrow B with the workpiece 31 held by the chuck 5b. Then, the unprocessed part of the workpiece 31 is pulled out from the chuck 3b by a certain distance in the direction B. In this state, the work 31 is held by the chucks 3b and 5b, and the portion of the work 31 pulled out from the chuck 3b is processed.

Furthermore, in order to process the unprocessed part of the long workpiece 31, open the chuck 5b shown in FIG.
．． 5, the machined part of the workpiece 31 is inserted into the through hole 5h of the spindle 5a-Q 7")r.Then, the chuck 5b is closed and the machined part of the workpiece 31 is held. At the same time, the chuck 3b is released.

In this state, the headstocks 3.5 are separated from each other, and the unprocessed portion of the work 31 is pulled out from the chuck 3b by a predetermined distance in the B direction, and the unprocessed portion of the work 31 is processed.

By repeating the above-described workpiece processing operation, it is possible to continuously process a long workpiece 31 that is longer than the distance between the spindles 3a and 5a.

(g) 0 Effects of the Invention As explained above, according to the present invention, the headstock 3 faces each other and is capable of moving and driving at least one of them in the Z-axis direction.
．． 5 or the like, and the work spindles such as spindles 3a, 5a, etc. are rotated on the first and second headstocks, respectively, in such a manner that their axes CTI, CT2 are aligned. The works bin is provided with through holes 3h and 5h, respectively, so as to penetrate in the Z-axis direction along the axes CTI and C'1''2 of the works bin. Therefore, the platform for processing the long workpiece 31 can hold and process the processed part of the workpiece 31 by inserting it into the through holes 3h and 5h of the workpiece bintle. It is no longer necessary to take a large movement stroke of the first and second headstocks in the Z-axis direction, and the long workpiece 3 can be moved at a distance greater than the distance between two opposing workpiece spindles without increasing the size of the entire multitasking machine tool 1.
You can add 1 to 2.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of a multi-tasking machine tool according to the present invention, Fig. 2 is a left side view of Fig. 1, and Fig. 3 is a single machining machine with a combined force of 71<T in Fig. 1. FIG. 4 is a front view showing the rope ink device installed in the machine, FIG. 4 is a view showing the main parts of the loading device, and FIGS. 5 to 13 are views showing how a workpiece is processed using an embodiment of the present invention. 14 to 19 are process diagrams showing how a long workpiece is processed using an embodiment of the present invention, and FIG. 20 is a process diagram showing another example of the handle 1- of the loading device. FIG. 1... Multi-tasking machine tool 3... First headstock (headstock) 3a...
・Work spindle (1 spin) 3 hours...
Through hole 5... Second headstock (headstock) 5a...
・Work spindle (1 spin) 5 hours...
Through holes CT1, CT2... Axial center Applicant Yamazaki Masac Co., Ltd. Agent Patent attorney Souji Shinji (Idiot 2 years old ~ Figure 5-461)

Claims (1)

[Scope of Claims] First and second headstocks are provided which face each other and at least one of which can be moved and driven in the Z-axis direction, and a work spindle is mounted on the first and second headstocks, respectively. , which are rotatably driven with their axes coincident with each other, and each of the work spindles is provided with through holes extending in the Z-axis direction along the axes of the work spindles. .