JPH01171701A - Composite working machine tool - Google Patents

Abstract

PURPOSE:To facilitate the machining of a long-size workpiece by movably providing a first tool rest in the first moving zone which is in the same direction as the moving direction of first and second headstocks and a second tool rest in the second moving zone which is superposed on the first moving zone, on a machine body. CONSTITUTION:A first tool rest 6A is moved in the same direction as the moving direction of both headstocks 3, 5 up to the common moving zone ARE 3 portion in a second moving zone ARE 2 while a second tool rest 6B is moved to the common moving zone ARE 3 portion in a first moving zone ARE 1, to carry out the machining of a workpiece 30 which is held by the chucks 3b, 5b of the first and second headstocks 3, 5 by means of their respective tools 33. At the time of delivering the workpiece 30, both headstocks 3, 5 are relatively brought close to each other and in this condition, the workpiece 30 held by the first headstock 3 is delivered to the second headstock 5. Thereby, a long-size workpiece can be easily machined while enabling the delivery of the workpiece between the mutually opposite headstocks, to facilitate end face machining, etc.

Description

[Detailed description of the invention] (a), Industrial application field The present invention has opposing headstocks.

The present invention relates to a multi-tasking machine tool having two turrets on which tools can be attached.

(b), Conventional technology Conventionally, when machining a workpiece with a multitasking machine tool, the workpiece is held in the headstock, and in that state, either the headstock or the tool rest with a tool attached is moved. As a result, the workpiece was cut using the tool.

(C) 0 Problems to be Solved by the Invention However, in this case, the relative movement distance between the tool rest (therefore, the tool 33) and the head stock is limited.

There was an inconvenience that machining of long workpieces had to be rotated.

In addition, when machining a workpiece in the first step on one headstock, and after the machining is completed, transfer the workpiece to the other headstock for further machining in the second step, A dedicated loading device for receiving and transferring the workpiece must be attached to the body of the multitasking machine tool, which inconveniences the overall size of the machine tool.

In view of the above circumstances, the present invention allows long workpieces to be processed easily and without increasing the size of a single machine.
The object of the present invention is to provide a multi-tasking machine tool capable of transferring a workpiece between opposing headstocks.

(d) Means for solving the zero problem, that is, the present invention has a machine body (2), and the machine body (2) is provided with first and second headstocks (3, 5).

The first and second headstocks (3, 5
and a workpiece holding means (3b).

5b), and furthermore, a first tool rest (6A) is provided on the machine body (2), and a first tool rest (6A) is provided in the moving direction (direction of arrows A and B).
The second tool rest (6B) is provided movably and driven within the movement area (AREI) of the movement direction (AREI), and the second tool rest (6B)
A second movement area (ARE3) that has a shared movement area (ARE3) overlapping with the first movement area (AREI) in the B direction);
It is configured to be movable and driveable within the ARE2).

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings.

This description is not limited to the description on the drawings.

The same applies to the column "r(e), Effect" below.

(e) 0 effect With the above-described configuration, the present invention provides the first tool rest (6A)
is the shared movement area (ARE2) in the second movement area (ARE2).
ARE3) is moved to the second turret (6B).
) is moved and driven to the shared movement area (ARE3) in the first movement area (AREI) to perform processing.・Also, when transferring the workpiece (3o), the first and second headstocks (3, 5) are brought relatively close to each other, and the workpiece is held in the first headstock (3) in that state. The bridge acts to transfer the workpiece (30) to the second headstock (5).

(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, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG.
A view in the direction of the m arrow in the figure.

Fig. 4 is a diagram showing the positional relationship between the two turrets of the multitasking machine tool shown in Fig. 1, Fig. 5 is a front view showing the turret of the multitasking machine tool shown in Fig. 1, and Fig. 6 7 is a diagram showing an example of a workpiece steady rest device mounted on a tool post, and FIG. 7 is a diagram showing an engaged state of the workpiece steady rest device and a workpiece.

Figures 8 to 15 are diagrams showing the process of machining a shaft work using the multi-tasking machine tool shown in Figure 1, and Figure 16 shows how a shaft work is machined while supporting the work using a face driver. Figures 17 and 20 are diagrams showing the process of machining bar work using the multi-tasking machine tool shown in Fig. 1. Figures 28 to 34 are diagrams showing an example of the process of continuously manufacturing combined parts using the multi-tasking machine tool shown in Figure 1. Figures 35 to 39 are diagrams illustrating an example of a process in which one type of workpiece is continuously chuck-worked using the multi-tasking machine tool shown in Figure 1.

FIGS. 40 to 42 are diagrams showing an example of a process of continuously chuck-working two types of workpieces using the multi-tasking machine tool shown in FIG. 1.

43 and 44 are diagrams showing another example of the process of continuously chuck-working two types of workpieces using the multi-tasking machine tool shown in FIG. 1. FIG.

FIGS. 45 and 46 are diagrams showing still another example of the process of continuously machining two types of workpieces using the multitasking machine tool shown in FIG. 1.

A multi-tasking machine tool 1 is shown in FIG.

It has a fuselage 2, and on the fuselage 2, a headstock 3.5 is installed.
Through the guide rails 2a, 2a which face each other and are shown in FIG. That is, W
, axial direction) and the arrow Δ2, B2 direction (namely, W, axial direction). Headstock 3, 5
As shown in FIG. 1, the main axes 3a and 5a are respectively indicated by arrows S.

It is provided so as to be rotatably driven in the T direction, and the main shafts 3a, 5
chucks 3b and 5b are attached to a, respectively. Note that the main shafts 3a and 5a have through holes 3c and 5, respectively.
C is formed to pass through the main shafts 3a, 5a in the direction of arrows A, B, and in the through holes 3c, 5c, as shown in FIG. It is provided so as to be movable in the directions of arrows A and B within each of the chucks 3b and 5b.

Further, on the machine body 2, as shown in FIG. 2, a carriage 7.7 constituting the tool rests 6A and 6B extends in a direction perpendicular to the plane of the paper in the figure (i.e., in the direction of arrows A and B in FIG. 3). Through the provided guide rails 2c, 2c, the direction of arrows A1, B, which are parallel to the directions of arrows A, B (i.e., the Z1 axis direction)
and the direction of arrows A and B (that is, the Z2 axis direction). Ball screws 2b and 2d, which are provided so as to extend from each other, are connected via nuts (not shown). The ball screw 2
A servo motor (not shown) is connected to each of b and 2d, and the servo motor is driven to drive each ball screw 2.
By rotating b and 2d in the forward and reverse directions, the tool rest 6
A and 6B move within their respective movement areas ARE1 and ARE2.

Here, the moving areas ARE1 and ARE2 refer to the tool rest 6A.
, 6B move along the directions of arrows A and B, which are the moving directions of the headstocks 3 and 5, respectively, along with the tools 33, the movement w! of each tool 33 in the directions of arrows A and B! In addition, the moving area AREI means the surrounding area.

The ARE2s are set to overlap with each other, and the overlapping range of the movement areas ARE1 and ARE2 is referred to as a shared movement area ARE3.

Furthermore, each carriage 7.7 has, as shown in FIG.
The turret base 9 has guide rails 2g and 2g, respectively.
Each turret base 9 has a main body 10. There is. Each main body 10 is provided with a turret 16 that can be freely rotated in the direction of arrow J in FIG.

The turret 1G has a casing 17.

By the way, inside the casing 17 and the turret base 9, there is a tool rotation drive 4! The tool rotation drive mechanism 32 includes a drive motor 11° pulley Ila, 1
3a, bearing part 12.17b, @13, belt 15. It has bevel gears 13b and 19a, a rotating shaft 19, and the like. A drive motor 11 is provided within the main body 10 of the turret base 9.

The drive motor 11 has a shaft 11b supported so as to be rotatable in the directions of arrows E and F. A pulley lla is attached to the shaft 11b.
is attached, and a bearing portion 12 is provided inside the main body 1o. The bearing part 12 has a shaft 13 which extends its axis CTI in the directions of arrows G and H, which are the up and down directions in FIG. At the lower end of the shaft 13 in the figure.

A pulley 13a is attached. Between the pulley 13a and the pulley 118 attached to the shaft 11b of the drive motor 1,
A bevel gear 13b is attached to the upper end of the shaft 13 in the figure.

Further, the main body 10 of the turret base 9 shown in FIG.
A turret 16 is provided so as to be rotatable in the direction of arrow J about the shaft 13, and the turret 16 has a casing 17.

A bearing portion 17b is provided in the casing 17, and a bevel gear 13b attached to the shaft 13 is provided in the bearing portion 17b.
is fitted so as to be rotatable in the direction of arrow J via bearings 37a, 37a. Bevel gear 13 b L
The bevel gear 19a is in mesh with the bevel gear 19a, and the bevel gear 19a is supported by the bearing portion 17b via bearings 37b, 37b so as to be freely rotatable in the direction M.

Further, a hole 19c is drilled through the bevel gear 19a in the directions of arrows P and Q, which are the left and right directions in FIG.
A keyway 19d is bored in the. Furthermore, bevel gear 1
The rotary shaft 19 is fitted into the hole 19c of the rotary shaft 19 in such a manner that the key 19e attached to the outer circumferential surface in the figure is slidably fitted into the key groove 19d so that it can move only in the direction of the arrow P-Q. The right end 19 in FIG. 6 of the rotating shaft 19 is supported.
A pressing portion 36a constituting the clutch 36 is provided at f. The suppressing portion 36a includes a screw portion 19g and a nut 19.
h, a support pin 19i, a spring 19j, etc., and a threaded portion 19g is screwed onto the right end portion 19f of the rotating shaft 19. A nut 19h is screwed into the threaded portion 19g.

A support pin 19i is provided in the casing 17 of the turret 16.
is freely rotatable in the direction of arrow M through the bearing 19k,
The nut 19h is also provided facing the nut 19h. Note that a spring 19j is provided between the nut 19h and the support pin 19i. Note that a wedge-shaped connection groove 19b forming the clutch 36 is formed at the left end of the rotation shaft 19 in FIG. 6.

Furthermore, turrets 16 and 16 that constitute the tool rests 6A and 6B
A plurality of tool mounting portions 17a are provided on the outer surface of FIG. 6, respectively.
is formed in one of these tool mounting portions 17a.

Workpiece steady rest devices 20A and 20B are respectively attached.

The workpiece steady rest devices 2OA and 20B each have a main body 21, as shown in FIG. It is provided in a rotatable form. A wedge-shaped connecting portion 22c constituting the clutch 36 is provided at the right end of the connecting shaft 22 in FIG. There is. Further, at the tip end 22a of the connecting shaft 22.

A male thread 22b is threaded on the distal end portion 22a, and an engagement member 23 is threaded on the engagement member 23.
b is screwed onto the male screw 22b.

It is provided so as to be movable only in the directions of arrows P and Q.

Note that a groove 23a is formed in the engagement member 23 in an annular shape so as to surround the distal end 22a of the connecting shaft 22.

Further, the main body 2 is provided with claws 25 and 26 formed in an L-shape so as to be openable and closable in the directions of arrows R and S via pins 25a and 26a, respectively.
．． At the left end of 26 in FIG.
b, 26b are rotatably mounted via shafts 25d, 26d. Moreover, at the other end of the claw 25.26,
Balls 25c and 26c are provided respectively, and the ball 25c.

26c is slidably fitted into the groove 23a of the engaging member 23. Further, a holding roller 27 is provided on the main body 21 between the claws 25 and 26, with a portion of the holding roller 27 projecting outside the main body 21 and rotatable about a shaft 27a.

Since the multi-tasking machine tool 1 has the above configuration, in order to perform shaft work processing using the machine tool 1, first, the turrets 16 and 16 of the tool rests 6A and 6B are
As shown in FIG. 6, the workpiece steady rest device 2O
Attach A and 20B. To do this, each main body 21 of the workpiece capture device 2OA, 20B shown in FIG.
The connecting portion 22c of the rotary shaft 19 is inserted into the connecting groove 19b of the rotating shaft 19, and the tool mounting portion 17a of the turret 1G is installed. Note that at this time, since the connecting groove 19b is pressed against the connecting portion 22c by the elastic force of the spring 19j,
The connecting shaft 22 and the rotating shaft 19 are reliably connected.

In this way, when the workpiece steady rest devices 2OA and 20B are attached to the turrets 16 and 16 of the tool rests 6A and 6B, pre-processing is performed. Here, pre-processing refers to cutting the left and right end portions 30f and 30e of the long workpiece 30 held by the chucks 3b and 5b into cylindrical shapes in FIG. As shown in FIG. 10, center holes 30i and 30j are formed in the end faces 30g and 30h of the workpiece 30.
means the process of drilling.

To do this, as shown in FIG. 8, the left end 80f of the long workpiece 30 to be machined is held by the chuck 3b, and the turret 1 of the tool rest 6A is held in that state.
Rotate 6 in the direction of arrow J to secure the workpiece steady rest!
! 20A, as shown in FIG.

The tool rest 6A together with the workpiece steady rest device 5t20A.

By moving a predetermined distance in the direction of arrow C8 in FIG. 3, that is, in the direction of arrow P in FIG. 6, the restraining roller 27 of the steady rest device 2OA is brought into contact with the workpiece 30.

In this state, l! in the turret base 9 shown in FIG. The motor 11 is driven to rotate the pulley lla in the direction of arrow F. Then, the shaft 13 rotates in the direction of the arrow along with the bevel gear 13b via the pulleys lla, 13a and the belt 15, and the rotating shaft 19 rotates in the direction of the arrow via the bevel gears 13b, ], 9a. Then, the connecting shaft 22 shown in FIG. 6 rotates in the direction indicated by the arrow through the connecting groove 19b and the connecting portion 22c, and the distal end portion 22a of the connecting shaft 22 also rotates in the direction indicated by the arrow.

When the connecting shaft 22 rotates in the direction indicated by the arrow, the engaging member 23 screwed into the male screw 22b of the tip 22a via the female screw 23b is aligned with the axis CTI of the shaft 13 with respect to the tip 22a.
The robot moves in the direction of arrow Q in FIG. Then, the nail 25
．． 26 balls 25c and 26c are in the groove 2 of the engagement member 23.
While sliding within 3a, they are pulled by the engaging member 23 and rotate in the direction of arrow S about pins 25a and 26a, respectively. Then, the support rollers 25b, 26b of the claws 25, 26 rotate in the direction of arrow S and come into contact with the workpiece 30, as shown in FIG.

Further, the workpiece 30 is pressed against the holding roller 27.

In this way, the workpiece 30 is supported by the support roller 25b.

26b and the holding roller 27, and supported by the workpiece steady rest device 120A, the turret 16 of the tool rest 6B shown in FIG. 2 is rotated in the direction of the arrow J to perform center hole drilling. 6. Next, in that state, insert the ball screw 2d shown in the fourth wJ.

The tool rest 6B is rotated by driving a servo motor (not shown), and the tool rest 6B is rotated along with the tool 33 in the direction indicated by arrow A4 in FIG.
direction, and further move the tool rest 6B by a predetermined distance in the direction of arrow C2. Then, the tool 33 moves the workpiece 3
Next, the chuck 3b, which is positioned opposite the right end surface 30g in the figure, is moved along with the workpiece 30 in the direction indicated by the arrow S.
direction, and in this state, feed the tool rest 6B along with the tool 33 a predetermined distance in the direction of arrow A4, and then rotate the tool 3
3, a center hole 30i is formed on the end surface 30g of the workpiece 30.
to be drilled. At this time, the workpiece 30 is placed near the right end 30e in FIG. 8 by the workpiece steady rest device 1120AJ.
Because it is supported by c.

While drilling the center hole 30i, the work 30 does not swing (1) The center hole 30i is drilled smoothly.

After the center hole 30i has been drilled in this way, the tool rest 6B is moved in the direction of arrow C8 and the direction of arrow D2 in FIG.
The turret 16 of B is turned in the direction of the arrow J, and the tool 33 for turning the outer diameter part is positioned at a predetermined position. Next, in this state, the tool rest 6B is moved to the tool 33 for cutting the outer diameter part.
At the same time, the tool 33 is moved in the directions of arrows A4 and B and in the directions of arrows C□ and D2, and the end portion 30e of the workpiece 30 is cut into a cylindrical shape. Note that after cutting is completed, the tool rest 6B is moved and retracted in the direction of arrow B4 and the direction of arrow D2.

Next, open the chuck 5b of the headstock 5 shown in 8th vA,
In this state, move the headstock 5 in the direction of arrow A2 and insert the right end 30e of the workpiece 30 into the chuck 5b as shown in FIG. Close chart 5b.

Furthermore, in order to release the support relationship between the workpiece steady rest device 20A and the workpiece 30, the drive motor 11 of the tool rotation drive mechanism 32 shown in FIG. 5 is driven.

axes 1] and b in the direction of arrow E. Then, the connecting shaft 22 connects the pulleys lla, 13a, the belt 15° shaft 13.
Bevel gears 13b, 19a, rotating shaft 19. The engaging member 2 shown in FIG. 6 rotates in the direction of arrow M via the clutch 36 and the like.
3 in the direction of arrow P. Then, the pawls 25 and 26 rotate in the direction of arrow R about the pins 25a and 26a, respectively, and the holding rollers 25b and 26b move away from the workpiece 30, and the supporting relationship between the workpiece steadying device 2OA and the workpiece 30 is released. . In this state, the tool rest 6A is moved in the direction of the arrow A1 in FIG. 1 to retreat from the workpiece 30.

Next, the headstock 3 is moved in the direction of arrow 81, and the headstock 5 is moved in the direction of arrow B2.

The headstock 3.5 is synchronously moved along with the workpiece 30 by a predetermined distance in the direction of arrow B. Next, rotate the turret 16 of the tool post 6B shown in FIG. 2 in the direction of arrow J,
Position the workpiece steady rest device [20B] at a predetermined position facing the workpiece 30, and furthermore, in that state, move the tool rest 6B,
Along with the workpiece steady rest device 20B, arrow A4 in FIG.
B, and in the direction of arrow 02, and in this state, the vicinity of the left end 30f of the work 30 in the figure is supported by the swing stop device 20B.

Next, the chuck 3b of the headstock 3 is opened, and in this state, the headstock 3 is moved in the direction of arrow A1, and the headstock 3 is positioned at the position shown by the solid line in Figure 1O.

Next, the turret 16 of the tool rest 6A is rotated in the direction of arrow J to position the center hole machining tool 33 at a predetermined position. Further, in this state, by driving a servo motor (not shown) to rotate the ball screw 2b shown in FIG.
It is moved by a predetermined distance in the directions of arrows A1 and B3 in the figure, and further in the direction of arrow C. Then, the center hole machining tool 33
It is positioned at a position facing the end portion 30h of the workpiece 30.

Next, the chuck 5b is rotated together with the workpiece 30 in the direction of the arrow S, and in this state, the tool post 6A is fed along with the center hole machining tool 33 by a predetermined distance in the force direction, so that the tool 33 30 end face 30h
A center hole 30j is formed in the center hole 30j. Further, the turret 16 of the tool rest 6A is turned in the direction of arrow J, the tool 33 for cutting the outer diameter portion is positioned at a predetermined position, and the end portion 30f of the workpiece 30 is cut into a cylindrical shape by the tool 33. .

When the pre-machining of the workpiece 30 is thus completed, the chuck 3b is opened, and in this state, the tool post 3 is moved together with the chuck 3b by a predetermined distance in the direction of arrow B□ force. Then, the turned end portion 30f of the workpiece 30 is inserted into the chuck 3b. In that state, chuck 3
b, and as shown in FIG.
The workpiece 30 is held between b. Next, while releasing the supporting relationship between the workpiece steady rest device 20B and the workpiece 30,
The tool rest 6A is moved and retracted in the direction of the arrow. Next, the chucks 3b and 5b are synchronously rotated in the direction of arrow S, and in this state, the workpiece 30 is subjected to main processing using the outer diameter cutting tool 33 mounted on the tool post 6A or 6B. In addition,
At this time, since the long workpiece 3o is positioned by the headstock 3.5 at a position corresponding to the common movement area ARE3 shown in FIG. By moving the workpiece 30 in the directions of arrows A3 and B3 within the movement area AREl, the workpiece 30 can be smoothly processed using the tool 33 mounted on one tool rest 6A. Further, the tool rest 6B is moved along with the tool 33 within the movement area ARE2 by the arrow A4. B, move it in the direction,
It is also possible to process the part of the workpiece 30 between the chucks 3b and 5b using only the tool 33.

Next, the part of the workpiece 30 held by the chuck 5b,
That is, the right end 30e in FIG. 12 is processed. For this purpose, the chuck 5b and the workpiece 3 shown in 12U4 are
0, release the holding relationship, and move the center 40 provided on the headstock 5 along the arrow A inside the spindle 5a and chuck 5b.
move a predetermined distance in the direction. Then, the center 40 protrudes from the chuck 5b in the direction indicated by the arrow and is inserted into the center hole 30i formed in the end surface 30g of the workpiece 30. In this state, the chuck 3b is rotated together with the work 30 in the direction of arrow S, and the right end 30e of the work 30 in FIG. 6. After machining, center 4
0 is moved and retracted in the direction of arrow B and positioned at the position shown by the broken line in FIG.

Similarly, the workpiece 30 held by the chuck 3b
In order to turn a part, a center 40 provided on the headstock 3 is made to protrude in the direction of arrow B from the position shown by the broken line in FIG. Insert it into the left center hole 30j, and
0 supports the end portion 30f of the workpiece 30. In that state.

The left end 30f of the work 30 in the figure is turned by the workpiece end processing tool 33 mounted on the tool post 6A.

At this time, since the workpiece 30 between the headstocks 3.5 is positioned at a position corresponding to the shared movement area ARE3 shown in FIG. 4, the end portion 30f of the workpiece 30 is also machined by the tool rest 6B. Is possible. That is, the tool rest 6
A is moved and retracted in the direction of the arrow A3, and in this state, the tool post 6B is moved in the direction of the arrow A4 within the movement area ARE2 together with the tool 33 used for machining the end portion 30e of the workpiece 30. The tool 33 is a workpiece 30 shown in FIG.
facing the end 30f of. In that state.

By feeding the tool rest 6B along with the tool 33 a predetermined distance in the direction of arrow C2 and further moving it in the directions of arrows A4 and B4, the tool 33 cuts the end 30f of the workpiece 30.
Cut into a cylindrical shape. In addition.

When processing the end portion 30f of the workpiece 30 using the tool rest 6B, processing of both end portions 30e and 30f of the workpiece 30 is performed using one tool rest (that is, in this embodiment, the tool rest 6B).
), and the other tool rest (in this embodiment, the tool rest 6A)
There is no need to attach the tool 33 for machining the ends 30e, 30f of the workpiece 30.

In addition, when boring the end faces 30e and 30f of the workpiece 30, finish the pre-processing shown in FIGS. 8 to 10,
Furthermore, after the outer peripheral part of the work 30 has been turned as shown in FIG. 11, the right end 30e of the work 30 shown in FIG. Support the tool rest 6B in that state.
The end portion 30e of the workpiece 30 is machined to a predetermined same diameter portion using a tool 33 for cutting the inner diameter portion, such as a drill or a boring rebit. Similarly, the left end 30f of the workpiece 30 in the figure is attached to the tool 33 mounted on the tool rest 6A.
Machining the same diameter part using

In addition, in the above-mentioned embodiment, a case was described in which the workpiece 3o was supported by the center 40. Any type of support may be used as long as it can rotatably support 30e and 30f.

For example, as workpiece supporting means, face drivers 3d, 3d shown in FIG. 16 are mounted on each spindle 3a, 5a of the headstock 3.5, and
The workpiece 30 may be supported in between, and the main processing may be performed on the workpiece 30 in this state.

When machining a bar work, as shown in FIG. 17, a bar feeder (not shown) is used to feed the bar work 30 through the through hole 3C of the main shaft 3a and the chuck 3b. Set so that the tip protrudes from the chuck 3b by a predetermined distance in the direction of arrow B.

Next, the chuck 3b is rotated together with the bar work 30 in the direction of arrow S, and the tip of the bar work 30 is processed in this state. Next, the chuck 5b is opened, and in this state, the headstock 5 is moved a predetermined distance in the direction of arrow A2 toward the headstock 3, and the chuck 5b is positioned at the position shown by the imaginary line in FIG. In that state.

By closing the chuck 5b, the bar work 30 is
It is held by chucks 3b and 5b.

Next, the holding relationship between the chuck 3b and the workpiece 30 is released, and in that state, the headstock 5 is moved along with the chuck 5b to the arrow B2.
move a predetermined distance in the direction.

Then, the bar work 30 moves in the direction of arrow B while being pulled by the chuck 5b, and the unprocessed part of the bar work 3o is pulled out by a predetermined length from the chuck 3b as shown in FIG. Shared movement area ARE3 shown in Figure 4
and is positioned at the corresponding position. Next, chuck 3b
is closed, and the bar work 30 is held by the chucks 3b and 5b.

In this state, the chucks 3b, 51. is rotated in the direction of arrow S synchronously with the bar work 30. Next, the tool rest 6
A or 6B with the tool 33, respectively, with the arrows A3 and B.
, direction, or arrow A, , B4 direction, etc.
The tool 33 performs a predetermined processing on the bar work 30 between the chucks 3b and 5b.

Next, the holding relationship between the chuck 5b and the bar work 30 is released, and in that state, the headstock 5 is moved to the first position along with the chuck 5b.
Move a predetermined distance in the direction of arrow A2 in Figure 8. Next, in this state, the chuck 5b is closed to hold the processed part of the bar work 30, and the chuck 3b and the bar work 30 are
Cancel the relationship with. In this state, the headstock 5 is moved along with the chuck 5b by a predetermined distance in the direction of arrow B2. Then, the bar work 30 moves in the direction of arrow B,
The machined part of the bar work 30 is the through hole 5c of the headstock 5.
At the same time, the unprocessed portion of the bar work 30 is pulled out from the chuck 3b.

Next, a predetermined portion of the bar work 30 between the chucks 3b and 5b is cut off, and the headstock 5 is cut off in that state.

It is moved together with the chuck 5b in the direction of arrow B2 in FIG. Next, the work piece 30c held by the chuck 5b (
That is, the bar work 3 cut and separated from the bar work 30
At the same time, the left end of the bar workpiece 30 held by the chuck 3b is machined.
As shown in FIG. 17, through holes 3c and 5 are provided in the
c is provided to extend in the directions of arrows A and B, so that the long workpiece 30 is held by the chucks 3b and 5b through the through holes 3c and 5c, and further mounted on the headstock 3.5.
By performing the workpiece pulling-out operations shown in FIGS. 17 to 19 (however, the cutting-off operation shown in FIG. 19 is not included), the unprocessed portion of the workpiece 30 is pulled out in the direction of arrow B. By processing the unprocessed portion of the workpiece 30 each time, the outer diameter portion of the workpiece 30 can be continuously processed.

Furthermore, in order to process the bar work and manufacture the joint parts, the bar work 30 is transferred to the main @ 3a and the chuck 3b by the bar feeder 41 installed on the left side of the second figure.
is set so that the tip end 30d of the bar work 30 protrudes from the chuck 3b by a predetermined distance in the direction of arrow B.

Next, the chuck 3b shown in FIG.
At the same time, the tool 3 for cutting the outer diameter section is rotated in the direction of the arrow S at a predetermined rotation speed, and in this state is mounted on the tool post 6A.
3, the tip end 30d of the bar work 30 is cut, and a male thread is formed on the tip end 30d using a thread cutting tool 33.

Next, the headstock 3 is attached to the bar work 3 via the chuck 3b.
While holding 0, move arrow B□ in the force direction,
The headstock 5 is moved along with the chuck 5b toward the headstock 3 by a predetermined distance in the direction of arrow A2. Then, the tip 30d of the bar work 3o is inserted into the chuck 5b as shown in FIG. 23. In this state, the chuck 5b is closed to hold the tip 30d of the bar work 30. In this state, the chucks 3b and 5b are synchronously moved to the bar work 3.
0 and rotate it in the direction of arrow S, and in that state, chuck 3
A predetermined portion of the bar work 30 between b and 5b is moved to the tool rest 6A.
Alternatively, it is cut by a cut-off tool 33 attached to 6B.

Next, the headstock 3 is moved by a predetermined distance in the direction of arrow A1, and the headstock 5 is cut and separated from the parts 30 r
It is then moved in the direction of arrow B2 and positioned at the position shown in FIG. Next, the bar work 30 held on the headstock 3 was attached to the tool rest 6A. Using a tool 33 for cutting the inner diameter part such as a drill or a boring tool 33, and a tool 33 for forming a female thread, the tip 30 of the bar work 30 is cut.
Drill and form a female thread in d. On the other hand, a male screw is formed on the unprocessed part of the part 30r passed to the headstock 5 by a male screw forming tool 33 mounted on the tool post 6B.

In this way, a male thread is formed on the part 30r, and
After the female thread is formed on the tip 30d of the bar work 30, attach the chuck 5b shown in FIG. 24 to the part 30r.
At the same time, it is rotated in the direction of arrow S or T at a predetermined rotational speed, and in this state, the headstock 5 is moved in the direction of arrow A2, and the headstock 3 is moved together with the bar work 30 in the direction of arrow 81. Then, the male thread of part 30r is also aligned with the arrow S.
Alternatively, it moves in the direction of arrow A while rotating in the T direction, and is screwed into the female screw of the bar work 30, so that the part 30r' and the bar work 30 are connected. Next, in that state, the tool rest 6B
The chuck 3 is cut off by the cut-off tool 33 attached to the
A predetermined portion of the bar work 30 between b and 5b is cut.

Next, the headstocks 3 and 5 are moved in the directions of arrow A, force direction, and arrow B2, respectively, to position the headstock 3.5 at the position shown by the solid line in FIG. 26. In this state, drive the bar work 30 shown on the left side in Figure 1, and move the bar work 30 to the arrow B.
direction, and the tip end 30d of the bar work 30 in the figure is made to protrude from the chuck 3b by a predetermined length in the direction of arrow B. In this state, a male screw is formed on the tip end 30d of the bar work 30 using the tool 33 attached to the tool rest 6A. On the other hand, the left end surface in FIG. 26 of the part 30s screwed together with the part 30r held on the headstock 5 is machined using the tool 33 mounted on the tool rest 6B.

In this way, the part 30s is processed in a screwed state with the part 30r, and a combined part 30T consisting of the parts 30s and 30r is manufactured.

The parts catcher 42 mounted on the tool rest 6B is positioned at a position separated from the chuck 5b by a predetermined distance in the direction of arrow A. In this state, while opening the chuck 5b,
A known workpiece discharging device 45 provided in the main shaft 5a dispenses the combined parts 30T from the chuck 5b in the direction of the arrow, and the discharged combined parts 30T are caught by the parts catcher 42 and carried out of the machine.

In addition, in the Example mentioned above, the case where the joint part 30T was manufactured continuously from the bar work 30 was described. However, the manufacturing method of the joint part 30T is not limited to this, and the method of manufacturing the joint part 30T is not limited to this, but the method of manufacturing the joint part 30T is not limited to this.
It is also possible to manufacture For example, as shown in FIG. 28, a workpiece handling device 4 (described later) is attached to the headstock 3
3 to the supplied workpiece 30A.
3, the workpiece 30 is processed in a predetermined manner by the headstock 3, and the workpiece 30 is transferred to the headstock 5.
Predetermined machining is performed on B using the tool 33. Next, the chuck 3b is rotated together with the workpiece 30A, and the headstock 3 is rotated in this state.

It is moved along with the chuck 3b in the direction of arrow 81.

At the same time, move the headstock 5 along with the chuck 5b to arrow A.
Move in two directions. Then, as shown in Figure 29,
Workpiece 30A and workpiece 30B approach each other, and workpiece 3
The tip of the workpiece 30A fits into the hole formed in 0B.

In this way, when the work 30A and the work 30B are combined, the holding relationship between the work 30A and the chuck 3b is released, and in this state, the headstock 3.5 is moved by a predetermined distance in the direction of arrow A1 and the direction of arrow B2, respectively. Then, position the headstock 3.5 at the position shown in FIG.

Next, in that state, move to the headstock 3 shown in FIG.

The workpiece 30B is supplied using the workpiece handling device M43, and the supplied workpiece 30B is subjected to a predetermined processing as shown in FIG. The left end in the figure is processed into a predetermined shape. Next, using the workpiece handling device 43 shown in FIG. 32, the combined works 30A, 30
B is carried out of the machine from the headstock 5. Next, the headstock 3,
5 is moved by a predetermined distance in the 33rd direction of arrow B□ and in the direction of arrow A, respectively, and the workpiece 30B held on the headstock 3 is transferred to the headstock 5.

Next, the workpiece 3 transferred to the headstock 5 shown in FIG.
A predetermined process is performed on 0B, and a workpiece 30A is supplied to the chuck 3b of the headstock 3 using a workpiece handling device 43.

Furthermore, when machining a chuck workpiece using the multitasking machine tool 1, the workpiece 30 to be machined is fed to the chuck 3b of the headstock 3 shown in FIG.
, the tool 33 attached to the tool rest 6A is used to
Perform processing of the process.

Next, the headstock 3 is moved around the workpiece 30 as shown in FIG.
At the same time, move the headstock 5 in the direction of arrow B in the force direction, and move the headstock 5 in the direction of arrow A2 with the chuck 5b open.
In this state, the chuck 5b is closed and the workpiece 30 is placed in the chuck 3b.

5b. Next, chuck 3b and workpiece 3
0, and in that state move the headstock 3 in the direction of arrow A.
□Move the headstock 5 along with the workpiece 30 in the force direction, and move the headstock 3, 5 to the 37th direction.
Position it at the position shown by the solid line in the figure.

Next, the workpiece 3 transferred to the headstock 5 shown in FIG.
0 is processed in the second step.

On the other hand, an unprocessed workpiece 30 is supplied to the headstock 3, and as shown in FIG.
Perform the second process similar to that on the side.

Then, on the headstock 3.5 side, similar machining (
In other words, the second step (machining) will be performed, and the finishing times of the machining will be approximately the same. For this reason.

After unloading the processed workpiece 30 from the chuck 5b,
Workpiece 3 that has been processed in the second process and immediately held on the headstock 3
0 to the headstock 5.

Next, the workpiece 3 transferred to the headstock 5 shown in FIG.
0, performs the first process machining, and the headstock 3
, an unprocessed workpiece 30 is supplied, and the workpiece 30 is subjected to the same first step processing as that on the headstock S side. When the workpiece 30 held on the headstock 3.5 has been processed in the first process, the first and second workpieces on the headstock S side are
The processed workpiece 30 is carried out of the machine, and the workpiece 30 on the headstock 3 side is transferred to the headstock 5.

By doing this, the machining time for each headstock 3.5 can be made equal, so there is no need for one headstock that has finished machining first to wait for the machining of the other headstock that is still being processed to be completed. , efficient processing can be performed.

In the above-mentioned embodiment, a case was described in which the first and second steps were continuously performed on one type of workpiece 30, but as described below, two types of workpieces 30D and 30E were processed. However, the first and second steps can also be performed continuously. That is, as shown in FIG. 40, a work 30D is supplied to the headstock 3, and the work 30D is
0D is machined in the first step 6 Next, the workpiece 30D that has been processed in the first step is transferred from the headstock 3 to the headstock 5 as shown in FIG. performs the second process processing on the passed workpiece 30D.

On the other hand, a workpiece 30E different in type from the workpiece 30D is supplied to the headstock 3 shown in FIG. 41, and the first process is performed on the workpiece 30E.

At this time, since the time required for machining the second process of the workpiece 30D and the time required for machining the first process of the workpiece 30E are set approximately equal, the time required for machining the workpiece 30D, 3
The machining end times of 0E are approximately the same, and immediately after the machined work 300 is carried out from the headstock 5, the work 30E that has undergone the first process is transferred.

As shown in FIG. 42, the bridge can be passed from the headstock 3 to the headstock 5. Next, the workpiece 3 passed to the headstock 5
At the same time, the second process is performed on the 0E, and the workpiece 30D is supplied to the headstock 3, and the first process is performed on the workpiece 30D.

In addition, in the embodiment described above, two types of workpieces 30
A case has been described where D and 30E are transferred between the headstocks 3 and 5, and the first and second processes are performed on the workpieces 30L) and 30E, but as described below, The first and second steps can be performed on two types of workpieces 30F and 30G without transferring the workpieces between the headstocks 3 and 5. That is, the workpiece 30F fed to the headstock 3 shown in FIG. 43 is processed in the first step, and the workpiece 30G fed to the headstock 5 is processed in the first step.

Next, after releasing the holding relationship between the headstocks 3, 5 and each of the workpieces 30F, 30G, the workpieces 30F, 30G are each reversed, and in this state, the headstock 3, 5 is again shown in FIG.
．． Attach it to 5. Next, in that state, workpieces 30F and 30
The second process is performed on G. Note that by providing a partition plate 46 between the headstocks 3.5 and 5 as shown in FIGS. 45 and 46, the workpiece 30F on the headstock 3 side and the workpiece 30G on the headstock 5 side are When processing the process and the second process, the workpieces 30, F, 3
The 0G chips and the cutting oil used for machining the workpieces 30F and 30G are not mixed together, and the chips can be disposed of smoothly. This is work 30F,
This is particularly effective when the 30G materials are different.

In the above-mentioned embodiment, as shown in FIG. 6, in the tool rests 6A and 6B which can be rotatably driven by mounting a rotary tool on one of the tool mounting parts 17a, the rotation Work rest device 20A instead of a tool,
A case has been described in which the workpiece gripping operation is performed by attaching the 20B.

However, the tool rest to which the workpiece steady rest devices 20A and 20B can be mounted is not limited to this, and any tool rest having a mechanism for rotationally driving a tool, such as the tool rotation drive mechanism 32 shown in FIG. , the tool rest may have any configuration. For example, as in the tool rest shown in Japanese Patent Application Laid-Open No. 59-30604, a plurality of rotating tools are mounted and the tools are selectively connected to a main shaft drive mechanism for rotating the tools via a clutch plate or the like and driven to rotate. It is of course possible to configure the obtained tool rest so that the workpiece steady rest devices 20A and 20B can be mounted at any position where the rotary tool is mounted so that the workpiece gripping operation can be performed.6(g)3 Effects of the Invention As explained above, according to the present invention, the aircraft body 2 is provided,
First and second headstocks such as headstocks 3 and 5 are provided in the machine body 2 so as to face each other and to be freely movable and driveable in a predetermined movement direction (for example, in the directions of arrows A and B in FIG. 1), Work holding means such as chucks 3b and 5b are provided on the first and second headstocks, respectively, and a first tool rest such as a tool rest 6, A is provided on the machine body 2 in the moving direction, Moving area AREI
It is provided so as to be freely movable and driven within the first movement area such as,
A second tool rest such as the tool rest 6B is provided so as to be movably driven in the movement direction within a second movement area such as a movement area ARE2 having a shared movement area ARE3 overlapping with the first movement area. °C configuration, the first and second tool rests can be moved to the shared movement area ARE3 of the first and second movement areas, respectively. For this reason,
The machining part of the long workpiece 30 is positioned at a position corresponding to the shared movement area ARE3, and in that state, the machining part of the long workpiece 30 is positioned at a position corresponding to the shared movement area ARE3, and in that state, the workpiece is The workpiece 30 can be machined, and the long workpiece 30 can be easily machined. In addition, since the first and second headstocks facing each other are provided so that they can be freely moved and driven in a predetermined movement direction, the first and second headstocks can be moved relatively without using a dedicated loading device. Move them closer to each other by moving them in the direction.

In this state, the workpiece 30 can be directly transferred between the headstocks. As a result, the workpiece 30 can be received and transferred between the opposing headstocks without increasing the size of the machine body 2. Note that the part of the workpiece 30 positioned within the shared movement area ARE3 can be processed using either the first or second tool rest. It is no longer necessary to mount the same tool 33 on each turret, and it becomes possible to mount the tools 33 on these turrets efficiently.Also, machining control only needs to be performed on one turret. , it is possible to easily create a Canadian program.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a multi-tasking machine tool according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG.
Figure 4 is a diagram showing the positional relationship between two turrets of the multitasking machine tool shown in Figure 1. Fig. 5 is a front view showing the turret of the multitasking machine tool shown in Fig. 1, Fig. 6 is a diagram showing an example of a workpiece steady rest device attached to the tool post, and Fig. 7 is a diagram showing the workpiece steady rest device and the workpiece steady rest device. FIG. 3 is a diagram showing a state of engagement with a workpiece. 8 to 15 are diagrams showing the steps of machining a shaft work using the multi-tasking machine tool shown in FIG. 1. Figure 16 is a diagram showing how a shaft work is machined while supporting a workpiece using a face driver, and Figures 17 and 20 are diagrams showing the process of machining a bar work using the multi-tasking machine tool shown in Figure 1. figure. 21 to 27 are diagrams showing an example of the process of continuously manufacturing combined parts using the multi-tasking machine tool shown in FIG. Figures 35 to 39 are diagrams showing another example of the process of continuously manufacturing joined parts using a processing machine tool. Figures 40 to 42 are diagrams showing an example of the process of continuously machining chuck workpieces, and FIGS. 40 to 42 show an example of the process of continuously machining two types of workpieces using the multi-tasking machine tool shown in FIG. 1. Figures 43 and 44 are diagrams showing another example of the process of continuously machining two types of workpieces using the multi-tasking machine tool shown in Figure 1, and Figures 45 and 44 are FIG. 46 is a diagram showing still another example of the process of continuously chuck-working two types of workpieces using the multi-tasking machine tool shown in FIG. 1. 1...Multi-processing machine tool -2...
・Airframe 3...First headstock (headstock) 3b, 5b...
...Work holding means (chuck) 5...Second headstock (headstock) 6A...First tool rest (
turret) 6B... Second turret (turret) AR
EI...First moving area (moving area) A RE
2...Second moving area (moving area) ARE3.
...Shared Transfer Area Applicant Yamazaki Masac Co., Ltd. Agent Patent Attorney Phase 1) Shinji (and 2 others) -B J(, Ir Figure 31 Figure 32* 331ffl 3?. 0B Figure 36 37 Figure 38 A←B Figure 39 Figure 40 A←→B -B Figure 42 33b 5.b Figure 43 Figure 44-B Figure 45 A +4-B Figure 46-B Showa April 26, 1963 1 Display of the case Patent Application No. 327652 of 1988 2 Name of the invention Composite processing machine tool 3 Relationship with the case by the person making the amendment Patent applicant address Oaza Koro, Oro-cho, Niwa-gun, Aichi Prefecture Boarding number 1 name (
Name) Yamazaki Mazak Co., Ltd. Representative Teruyuki Yamazaki 4 Agent Address 1-9-6 Iwamoto-cho, Chiyoda-ku, Tokyo 101 (Delivery Port: March 29, 1988) 6. Subject to Amendment (1) 2 Plaintiffs ``and'' in the first line of page 44 of the book is corrected to ``to''. that's all

Claims (1)

[Scope of Claims] A machine body, wherein first and second headstocks are provided on the machine body to face each other and to be freely movable and driven in a predetermined movement direction, and the first and second headstocks a workpiece holding means is provided on each of the machine body, and a first tool rest is provided on the machine body in the moving direction;
A second tool rest is provided so as to be freely movable and drivable within the first movement area, and a second tool rest is provided in the second movement area having a shared movement area that overlaps with the first movement area in the movement direction,
A multi-tasking machine tool configured to be freely movable and driveable.