JP2986965B2 - Spindle of multitasking machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle in a multi-tasking machine equipped with a cutting unit and a grinding unit.

[0002]

2. Description of the Related Art Mechanical parts are often subjected to heat treatment such as quenching to improve durability. The quenched work is subjected to grinding to complete a highly accurate and durable work. When grinding a work, the work is usually processed by chucking the work with a spindle or supporting the work at a center between the spindle and a tailstock.

[0003]

In the conventional processing machine, the center of the spindle is fixed to the spindle, and when chucking a work, the spindle is equipped with a chuck. Therefore, the work was always outside the spindle. In the present invention, by configuring the work so as to be able to be drawn into the main shaft, the work of the work, particularly the grinding processing, can be automated and the precision can be improved without the need for steadying the work.

[0004]

SUMMARY OF THE INVENTION A multi-tasking machine embodying the present invention includes first and second spindles arranged opposite to each other, and a grinding unit cooperating with the first and second spindles. The first main spindle has a sliding center that can be pulled into the main spindle, and supports the workpiece between the second main spindle and performs grinding. The work drawn into the main shaft is gripped by a collet device and subjected to chucking.

[0005]

According to the above construction, the workpiece can be automatically ground without changing the work in the middle, so that the centering work and the like can be omitted, the lead time can be reduced, and high-precision processing can be performed. You.

[0006]

FIG. 1 is a plan view of a multi-tasking machine 1 according to the present invention.
FIG. 2 is a front view. The multi-tasking machine 1 includes a bed 10
And a table 20 which is guided on a first guide surface 12 provided on the bed 10 and slides in the direction of the axis Z1. On the table 20, a first headstock 30 is attached,
The first headstock 30 is equipped with a first spindle 35. First
The main shaft 35 is rotatable around the rotation axis C1, and the rotation position is controlled. On the table 20, the second
The second headstock 50 is slidably disposed along the axis Z2. The second spindle 55 mounted on the second headstock 50 is rotatable about the rotation axis C2 and the rotation position is controlled. The movement axis Z1 of the table 20 and the movement axis Z2 of the second headstock 50 are parallel. A third guide surface 14 is disposed orthogonal to the first guide surface 12 along the axis Z1 on the bed 10, and a turning mill unit 60 slides on the third guide surface 14 along the movement axis X1. Equipped with freedom of movement. The turning mill unit 60 includes a turret type tool rest 65.

On the bed 10, a fourth guide surface 16 is further provided in parallel with the third guide surface 14, and a grinding unit 70 is provided on the fourth guide surface 16 along the movement axis X2. Equipped slidably. The grinding unit 70 is movable along the axis X2, is pivotable about an axis B perpendicular to the plane formed by the axis X2 and the axis Z1, and is mounted so that the pivot position can be controlled. The grinding unit 70 includes an outer grinding unit 74 for grinding the outer diameter portion of the work, and an inner grinding unit 76 for grinding the inner diameter portion of the work. The grinding unit 70 has a fifth guide surface 71 perpendicular to the plane formed by the axis X2 and the axis Z1, and the inner grinding unit 76 is provided on the fifth guide surface.
Are slidably mounted along the movement axis Y. The multi-tasking machine 1 of the present invention includes four movement axes Z1, Z2, X1, and X2 arranged on the same plane, a movement axis Y perpendicular to the plane, and three rotation axes C1, C2, B, eight control axes in total.

FIG. 3 is a plan view showing the multi-tasking machine 1 in more detail. 4 is a front view, FIG. 5 is a view taken in the direction of arrow H in FIG. 3,
FIG. 6 is a view on arrow K in FIG. A linear guide 130 mounted on the table 20 is slidably engaged with the first guide surface 12 mounted on the bed 10. Bed 1
0 controls the rotation of the ball screw 120, and the ball screw 120 is mounted on the table 2.
Screw it to 0. Therefore, the moving speed and the moving position of the table 20 on the axis Z1 are controlled in accordance with the rotation speed and the rotation amount of the servomotor 110. The first headstock 30 fixed to one end of the table 20 rotatably supports the first spindle 35. A second servomotor built in the first headstock 30 controls the rotation speed and the rotation position of the first spindle 35 around the axis C1.

A linear guide 230 mounted on the second headstock 50 is slidably engaged with the second guide surface 21 mounted on the table 20. A third servomotor 210 attached to the other end of the table 20 controls the rotation of the ball screw 220. The ball nut attached to the second headstock 50 is screwed into the ball screw 220,
The moving speed and the moving position of the second headstock 50 on the axis Z2 are controlled in accordance with the rotation speed and the rotation amount of the servo motor 210. The second headstock 50 rotatably supports the second spindle 55. The fourth servo motor built in the second headstock 50 controls the rotation speed and the rotation position of the second spindle 55 around the axis C2. On the multi-tasking machine 1, a cutting edge position measuring device 170 for measuring a cutting edge position of a cutting tool attached to a tool rest, and a work measuring device 180 for measuring a dimension of a work are provided.

In FIG. 5, a fifth servo motor 610 attached to the bed 10 controls the rotation of a ball screw 620. The linear guide 625 attached to the turning mill unit 60 is connected to the third guide surface 14 fixed on the bed 10.
And the ball nut 630 of the turning mill unit is screwed into the ball screw 620. Therefore, the moving speed and the moving position of the turning mill unit 60 on the axis X1 are controlled according to the rotation speed and the rotation amount of the servomotor 610. The turning mill unit 60 includes a turret type tool rest 65. The tool post 65 has, for example, twelve tools 650 exchangeably mounted around it. The tool 650 is
Turning tools and milling rotary tools can be used. Various turning tools and rotary tools 6 equipped on the tool post 65
Using the 50, various processes can be performed on the workpiece.

In FIG. 6, a sixth servo motor 710 attached to the bed 10 controls the rotation of a ball screw 712. Linear guide 7 attached to grinding unit 70
The ball nut 7 of the grinding unit 70 is engaged with the fourth guide surface 16 fixed on the bed 10.
16 is screwed into the ball screw 712. Therefore, the moving speed and the moving position of the grinding unit 70 on the axis X2 are controlled in accordance with the rotation speed and the rotation amount of the servomotor 710. The grinding unit 70 is controlled along the axis X2 and is indexable about the axis B. And
An external grinding unit 74 and an internal grinding unit 76 are provided at diagonal positions of the grinding unit 70. The external grinding unit 74 includes an outer diameter grinding wheel 750. The tip of the outer diameter grinding wheel 750 is
It turns around radius B1 about axis B. The inner grinding unit 76 includes an inner diameter grinding wheel 770. Internal grinding wheel 7
The tip of 70 pivots about axis B at radius R2.

FIG. 7 is a plan view of the grinding unit, and FIG. 8 is a view taken in the direction of arrow M in FIG. The grinding unit 70 includes a motor 74
0, and the motor 740 rotates the external grinding wheel 750 of the external grinding unit 74. The fifth guide surface 71 fixed to the outer peripheral portion of the grinding unit 70 supports the inner grinding unit 76 slidably. The seventh servo motor 760 attached to the grinding unit 70 controls the rotation of the ball screw 764 via the timing belt 762. Inner lab unit 76
The ball nut 766 attached to the
To screw. Therefore, the moving speed and moving position of the inner lab unit 76 on the axis Y are controlled according to the rotating speed and the rotating amount of the servomotor 760. The motor 775 attached to the inner grinding unit 76 drives the inner grinding wheel 770.

FIG. 9 is an explanatory view showing a turning mechanism around the axis B of the grinding unit 70, and is a sectional view half-mounted from a center line. The base 700 of the grinding unit 70 is connected to a guide surface 16 disposed on a bed via a linear guide 714.
It is slidably supported above. The base 700 rotatably supports the swivel table 720 via a cross roller bearing 724. The shaft 722 provided at the center of the swivel 720 is inserted into the hole of the bush 702 attached to the base 700,
A coupling such as cutting water is formed between the bush 702 and the shaft 722. The base 700 has an eighth (not shown)
Of the worm gear 730 is controlled by the eighth servo motor. The worm gear 730 meshes with a worm wheel 726 formed integrally with the turntable 720 to index the turntable 720. The swivel table 720 includes a brake plate 728, and clamps the swivel table at an indexing position by holding the brake plate 728 with a hydraulic cylinder. The swivel table 720 supports a motor 740 of the external grinding unit and the internal grinding unit 76, and the motor 740 drives a spindle 742 for attaching the external grinding wheel.

As described above, the present multi-tasking machine 1 is provided with two headstocks which are disposed to face each other and whose movement in the axial direction is controlled independently of each other, so that the first headstock and the second headstock are provided. Headstocks can jointly handle long shafts.
In addition, the workpiece processed in the first step by the first headstock
, And the second step can be processed to transfer a work having a complicated shape in a short time and with high accuracy. Further, since the machine is equipped with a turning mill unit and a grinding unit for cutting a quenched work, it is suitable for production of parts having a high surface hardness such as a spindle and requiring high-precision machining. By preparing a unit that changes the mounting direction of the grindstone of the inner grinding unit 76 by 180 degrees, the grinding range can be further increased.

FIG. 10 is a block diagram showing the entire control device of the multi-task machine. The control device, generally indicated by reference numeral 90, includes a main control unit 900 and various control elements connected via a bus 910. As control elements, a keyboard 912, an image display device 914, the work measuring device 1
80 control device 916 and measurement data processing unit 918,
Program line controller interface 92
0, program memory 922, data memory 92
4, a parameter memory 926, an external storage device 930, and an input / output processing unit 930 for the external storage device.
The servo motor control unit includes a table position (Z1) control unit 950 of the table servo motor 110, a C1-axis control unit 952 of the first spindle servo motor 31, and a second
Position (Z2) of the headstock servo motor 210
54, a control unit 956 for the C2 axis of the servomotor 51 for the second spindle. Also, the servomotor 31 of the first spindle
And a spindle connected to the tool post, a mill axis control unit 960, and a turning unit position (X1) control unit 96 of the servomotor 610
2. The inner lab unit position (Y) control unit 970 of the servomotor 760, the spindle connected to the servomotor 51 of the second spindle and the grinding unit, the grinding wheel shaft 964, the servomotor 710
A grinding unit position (X2) control unit 966 and a grinding unit turning position (B) control unit 972. As described above, this multi-tasking machine has a total of eight control axes and executes complicated machining.

Next, the details of the grinding processing by the above-described combined processing machine will be described. FIG. 11 shows a plan view and a side view of the grinding unit 70. The inner grinding unit 76 provided in the grinding unit 70 has a guide portion 774 that engages with the guide surface 71 provided in the grinding unit 70, and moves along the axis Y. The motor 775 of the inner laboratory unit is
The inner grinding is performed by driving the inner grinding wheel 770 attached to the spindle 776. In the standard inner grinding unit 76, the direction of the inner grinding wheel 770 is changed to the outer grinding wheel 75 of the outer grinding unit 74.
It is arranged symmetrically with respect to 0. In addition to this standard internal grinding unit 76, the first exchanged internal grinding unit 76A shown in FIG.
76A is mounted 180 degrees opposite the spindle 776 of the standard inner lab unit 76. The first exchange inner labor unit 76A is connected to the guide surface 7 via the guide portion 774A.
By slidably attaching the work 1 to the inside, it is possible to perform internal grinding of a work chucked on the second spindle.

FIG. 13 shows a second exchange internal lab unit 76B. In the inner lab unit 76B, a spindle 776B for driving the grindstone 770B is disposed in a direction in which the spindle 776B rotates 90 degrees with respect to the spindle 776 of the standard unit 76.
By using the exchange inner grinding unit 76B, it becomes possible to grind a cam groove or the like provided on the surface of a work, for example. The multi-tasking machine has a first
Since the main spindle 35 and the second main spindle 55 are provided, by turning the work between the two main spindles, turning and grinding of the entire work can be accomplished in a short time without any setup.

FIG. 14 shows an example of the work 80. The work 80 is a stepped cylindrical member having a small diameter portion 810 and a large diameter portion 820, and has an outer peripheral surface 812 of the small diameter portion 810 and a large diameter portion 820. The outer peripheral surface 822 and the inner peripheral surface 830 are subjected to grinding. In a grinding machine having a single main shaft, the large diameter portion 820 is chucked to process the outer peripheral surface 812 and the inner peripheral surface 830 of the small diameter portion 810, and then the small diameter portion 8 is processed.
It is necessary to re-chuck 10 and perform external grinding on the outer peripheral surface 822 of the large diameter portion 820. In this machine, the work can be automatically transferred between the spindles to complete the above-described steps.

FIG. 15 shows the large-diameter portion 820 of the workpiece 80 as the first portion.
2 shows a state where the main shaft 35 is chucked. The first main shaft 35 rotates the work 80 around the axis C1, and the table is traversed in the direction of the axis Z1. Since the grinding unit 70 is fed in the direction of the axis X2, the axes C1, Z
By controlling both X1 and X2 at the same time, the outer peripheral surface 812 of the small diameter portion 810 of the work 80 can be processed by the grindstone 750 of the external grinding unit. Next, the grinding unit is rotated by 180 degrees about the axis B, and the inner grinding unit 76 is moved to the work 8.
The inner peripheral surface 830 is machined so as to face the 0 side. The first of processing
When the process is completed, the work 80 is transferred to the second spindle 55 side. The second main shaft 55 moves on the table in the direction of the axis Z2 to grip the small-diameter portion 810 of the work 80. Thereafter, the chucking of the first spindle 35 is released, and the second spindle 5
5 retreats to a predetermined position.

FIG. 16 shows this state, in which the outer peripheral surface 822 of the large-diameter portion 820 of the work is machined with an external grinding wheel 750. In the case of this processing, the control axis is the feed axis Z1 of the table,
The rotation axis C2 of the second main shaft 55 and the feed axis X2 of the grinding unit 70 are used. Grinding unit 70 of this multi-tasking machine
Can perform various grinding processes since it can be turned around the axis B with respect to the base 700. FIG. 17 shows a state in which the index angle around the axis B is turned -A degrees from the reference position when the counterclockwise direction in the plan view is the positive direction. By simultaneously controlling the axes Z1 and X2 using the external grinding wheel 750 at this indexing position, the work 81
The outer surface of the tapered portion 815 can be ground. The taper angle is 2A degrees.

FIG. 18 shows a state where the turning position of the grinding unit 70 is returned to the reference position (0 degree). In this position, the straight outer peripheral surface or the inner peripheral surface of the work 82 is processed. FIG. 19 shows a grinding unit 70 as a base 70.
This shows a state where the vehicle has turned A degrees in the positive direction with respect to 0. At this position, the tapered portion 835 gripped on the second spindle side is ground by using the external grinding wheel 750. The taper angle is 2
A degree. FIG. 20 shows the grinding unit 70 as a base 700
Shows a state where the vehicle has turned 90 degrees in the positive direction with respect to. No processing is performed at this position. FIG. 21 shows a state where the grinding unit 70 is turned to an obtuse angle B degrees. The first exchange unit 76A is provided as an inner grinding unit, and the tapered surface 845 of the work 84 gripped by the second spindle is machined by the inner grinding wheel 770A. The taper angle is 2 × (180 degrees−B degrees).

FIG. 22 shows a state in which the grinding unit 70 is turned by 180 degrees. By equipping the standard unit 76, the inner peripheral surface 855 of the work 85 gripped by the first spindle is provided.
To process. By mounting the first replacement unit 76A instead of the standard unit 76, the inner peripheral surface 865 of the work 86 gripped by the second spindle is processed using the inner grinding wheel 770A. FIG. 23 shows the grinding unit 70
It shows a state where the vehicle has turned at an angle C degrees which is equal to or more than degrees. The standard unit 76 is mounted, and the tapered inner peripheral surface 875 of the work 87 gripped by the first spindle is processed by the inner grinding wheel 770. The taper angle is 2 × (C degrees−180 degrees).

Next, a description will be given of a processing method for executing the inner lab unit by controlling its movement in the direction of the axis Y. 24 and 25
Shows a case in which a key 882 protruding from the end face of the cylindrical work 88 is ground. The work 88 includes the first spindle 3
The grinding unit 70 is provided with a standard unit 76 as an inner lab unit. By shifting the inner grinding unit 76 by the distance Y10 along the axis Y, the inner grinding wheel 770 can grind both side surfaces 882A and 882B of the key 882. FIG.
FIGS. 6 and 27 show a case where a cam groove 892 is machined on the outer peripheral surface of a shaft-shaped work 89. The work 89 gripped by the first main shaft 35 is controlled around the first rotation axis C1. The width of the cam groove 892 is larger than the diameter of the inner grinding wheel 770B. As an inner laboratory unit,
Equipped with the second replacement unit 76B, the one wall surface 892A of the cam groove 892 is machined by shifting along the axis Y by the distance Y20. When processing the other wall surface 892B of the cam groove 892, the unit is shifted along the axis Y by a necessary distance.

The first spindle 35 mounted on the first headstock 30 of the multi-tasking machine described above has the configuration described below. FIG. 28 is a sectional view of the first main shaft 35. The first spindle 35 has a spindle 350 rotatably supported by the first headstock 30. Spindle 350
Are supported by bearings and driven by a servomotor. The rotational position of the spindle 350 can be determined. An adapter 38 is provided at the tip of the spindle 350.
In addition, the front surface of the adapter 380 is covered with a cover 381. A collet device 360 is provided inside the tip of the spindle 350. The collet device 360 is operated by a collet operation shaft 370. The inner peripheral part of the collet device 360 is
Supports 0. A center member 410 is attached to the front end of the sliding center 400. The sliding center 400 is a pipe-shaped member and is operated by the driving device 40. The driving device 40 includes a support pipe 420 whose one end is supported at a rear end of the main shaft. A fixed piston 430 is attached to a front end of the support pipe 420. The fixed piston 430 slidably supports the inner peripheral portion of the sliding center 400 at its outer peripheral portion. A flange member 402 is fixed to the rear end of the sliding center 400. The inner peripheral portion of the flange member 402 slides on the outer peripheral portion of the support pipe 420.

With the above configuration, a first cylinder chamber 404 is formed between the inner peripheral portion of the sliding center 400 and the fixed piston 430. A second cylinder chamber 428 is formed between the fixed piston 430 and the flange member 402. Two fluid passages 422 and 424 are provided inside the support pipe 420. The first passage 422 communicates with the first cylinder chamber 404 via a hole 426 provided in the fixed piston 430. The second passage 424 communicates with the second cylinder chamber 428. Therefore, the first passage 42
The sliding center 400 can be moved along the axis Z11 by supplying fluid pressure to the first cylinder chamber 404 or the second cylinder chamber 428 via the second or second passage 424. The collet operating member 370 provided on the outer periphery of the sliding center 400 is driven along the axis Z12 by an actuator (not shown). The collet device 360 is opened and closed by the movement of the operation member 370.

FIG. 29 shows the details of the collet device 360. The collet device 360 has a cylindrical shape and has a first tapered surface 36 on the outer peripheral portion on the side arranged on the tip end side of the spindle.
2 are provided. A second tapered surface 364 is provided on the rear end side of the collet device 360. The taper angle of the first taper surface 362 is set to an angle smaller than the taper angle of the second taper surface 364. Spindle 3
The adapter 380 attached to the distal end portion 50 has a tapered hole 382 corresponding to the first tapered surface 362 of the collet device 360 on the inner peripheral portion. Collet device 360
The collet operation shaft 370 disposed at the rear end of the
The second tapered surface 3 of the collet device 360 is provided at the tip thereof.
64 has a tapered hole 372 corresponding thereto. Therefore, when the collet operation shaft 370 is operated toward the adapter 380 along the axis Z12, the collet operation shaft 3
70 presses the collet member 360 toward the adapter member 380 side. Due to this pressing force, a force toward the inner circumferential direction is applied to the leading end and the trailing end of the collet device 360 by the action of the tapered surface. As a result, the collet device 360 grips the inner peripheral member at its inner peripheral portion.

When the collet operating shaft 370 is pushed toward the distal end of the spindle, the pin 388 inserted into the collet device 360 is also driven via the collar 375 in the same direction. The pin 388 is connected to a rod 384 disposed in an orthogonal direction, and the rod 384 presses a spring 386. The pin 388, the rod 384, and the spring 386 are provided, for example, at three locations in the circumferential direction. When the collet operating shaft 370 is pulled back in the direction of the axis Z12, the engagement between the tapered hole 372 of the collet operating shaft 370 and the second tapered hole 364 of the collet device 360 is released, and the rear end of the collet device 360 is located on the inner peripheral side. Release the gripped member with. At the same time, the spring 38
6 pushes the collet device 360 back to the inside of the spindle 350 through the rod 384 and the pin 388 that have been pushed out to the spindle tip side by the collar 375. By this operation, the first tapered surface 362 of the collet member 360 is
Is disengaged from the tapered hole 382 of the adapter 380, and the inner periphery of the distal end of the collet member 360 releases the gripped member. As described above, the first main shaft 35 can be opened and closed freely inside the spindle 350 by the collet device 360.
And the operating shaft 370 for operating the collet device 360 and the sliding center 400 disposed inside the collet device 360 and the driving device 40 of the sliding center 400, so that various works can be handled.

FIG. 30 et seq. Show the operation of the first main shaft 35 of the present invention. FIG. 30 shows an outline of the main shaft 35. A sliding center 410 is provided inside a spindle 350 and is supported by a collet device 360. Sliding center 4
Numeral 10 is connected to a driving device generally designated by reference numeral 40 to move the sliding center along the axis Z11. Note that FIG.
In the following, a cylinder of the type in which the piston moves is shown as an embodiment of the drive device 40. The collet device 360 is operated by the operation member 370. Code 3
Reference numeral 7 denotes an actuator, and the piston 375 is connected to the operation member 370. Therefore, actuator 3
7, the collet device 360 is opened and closed by operating the driving device 40, and the sliding center 410 is operated.
Slides along the axis Z11. FIG. 30 shows the first main shaft 35.
5 shows a state where the work 45 is carried in between the second spindle 55 and the second spindle 55. The work 45 is placed on a work rest 49 provided on a table.

FIG. 31 shows that the second spindle 55 moves along the axis Z2, and the workpiece 45 is moved to the center 410 of the first spindle 35 by the tip of the chuck 552 attached to the second spindle 55.
2 shows a process of pressing the substrate. FIG. 32 shows that the second
2 shows a state in which the chuck 552 of the main shaft 55 is closed and the work 45 is gripped. The work 45 is supported by the center 410 of the second main shaft 55 and the first main shaft 35, and the second main shaft 55
Is driven to rotate. Therefore, the outer peripheral surface 45 of the work 45
1 can be subjected to necessary cutting and grinding.

FIG. 33 shows a state in which the processing of the outer peripheral surface 451 of the work 45 has been completed. The actuator 37 is driven to open the collet device 360. Therefore, the center 410 is released from the holding of the collet device 360. FIG. 34 shows an operation of pushing the work 45 into the inside of the collet device 360 by moving the second main shaft 55 forward in the axis Z2 direction. The center 410 retreats into the spindle 350 while engaging with the end of the work 45. FIG. 35 shows the second spindle 5
5 shows a state in which the pushing of the work 45 into the collet device 360 is completed and the chuck 552 of the second spindle 55 is opened. FIG. 36 shows a state in which the operating member 370 is driven by the actuator 37, the collet device 360 is closed, and the work 45 is gripped. FIG. 37 shows a state in which the second main shaft 55 that has pushed the work into the first main shaft 35 retreats along the axis Z2. In this state, the head 452 of the work 45
To the necessary cutting and grinding processes.

FIG. 38 shows a state in which the second main shaft 55 advances again along the axis Z2 toward the workpiece 45 on which the processing of the head 452 has been completed. FIG. 39 shows a state where the collet device 360 is opened by operating the actuator 37. FIG.
Reference numeral 0 denotes a work 45 from which the grip of the collet device 360 is released.
Shows a state in which is gripped by the chuck 552 of the second spindle 55. FIG. 41 shows the second spindle 55 holding the work 45.
Is moved along the axis Z2 to pull out the work 45 from the first spindle 35. At this time, the center 41
The second main shaft 55 is moved in a state where the center 410 is pressed against the work 45 by operating the zero drive device 40. FIG. 42 shows a state in which the second spindle 55 that has pulled out the work 45 from the first spindle 35 has opened the chuck 552. FIG. 43 shows a state where the work 45 is supported by the work rest 49. Thus, all the processes are completed.

[0032]

As described above, the multi-tasking machine of the present invention includes the first main shaft 35 and the second main shaft 55 which are disposed opposite to each other, and the collet device 360 and the sliding center 410 are provided in the first main shaft. Is provided. The collet device 360 can chuck the slide center 410 and chuck the work. Therefore, the work 45 is moved to the center 410
The workpiece 45 can be machined while being supported by the second spindle 55 and the workpiece 45. Further, the workpiece 45 is pushed into the collet device 360 of the first spindle 35, and the workpiece is chucked by the collet device 360 for machining. Can also. With the above-described configuration, all processes of the cutting and grinding of the workpiece 45 can be performed on the same machine, and the machining of the outer peripheral surface 451 and the machining of the head 452 in the grinding can be achieved with high accuracy. In the above embodiment, the sliding center and the collet device are provided in the first main shaft, but may be provided in the second main shaft.

[Brief description of the drawings]

FIG. 1 is a plan view of a multi-tasking machine according to the present invention.

FIG. 2 is a front view.

FIG. 3 is a plan view showing a control axis.

FIG. 4 is a front view.

FIG. 5 is a view taken in the direction of the arrow H in FIG. 3;

FIG. 6 is a view as seen from the arrow K in FIG. 3;

FIG. 7 is a plan view of a grinding unit.

8 is a view as viewed in the direction of the arrow M in FIG. 7;

FIG. 9 is an explanatory view showing a turning mechanism of the grinding unit.

FIG. 10 is a block diagram of a control device.

FIG. 11 is an explanatory view showing details of a grinding unit.

FIG. 12 is an explanatory view showing a first exchange unit of the inner laboratory unit.

FIG. 13 is an explanatory view showing a second replacement unit of the inner laboratory unit.

FIG. 14 is a sectional view of a work.

FIG. 15 is an explanatory view showing a first step of grinding.

FIG. 16 is an explanatory view showing a second step of grinding.

FIG. 17 is an explanatory diagram showing a first turning position of the grinding unit.

FIG. 18 is an explanatory diagram showing a second turning position of the grinding unit.

FIG. 19 is an explanatory diagram showing a third turning position of the grinding unit.

FIG. 20 is an explanatory diagram showing a fourth turning position of the grinding unit.

FIG. 21 is an explanatory diagram showing a fifth turning position of the grinding unit.

FIG. 22 is an explanatory view showing a sixth turning position of the grinding unit.

FIG. 23 is an explanatory view showing a seventh turning position of the grinding unit.

FIG. 24 is an explanatory diagram showing movement control of the inner lab unit along the axis Y.

FIG. 25 is an explanatory view showing processing by moving the inner lab unit along the axis Y.

FIG. 26 is an explanatory diagram showing movement control of the inner lab unit along the axis Y.

FIG. 27 is an explanatory diagram showing processing by moving the inner lab unit along the axis Y.

FIG. 28 is a sectional view of a first main shaft.

FIG. 29 is a sectional view of a collet device.

FIG. 30 is an explanatory diagram showing an operation of gripping a work.

FIG. 31 is an explanatory view showing an operation of gripping a work.

FIG. 32 is an explanatory diagram showing an operation of gripping a work.

FIG. 33 is an explanatory view showing an operation of gripping a work.

FIG. 34 is an explanatory diagram showing an operation of gripping a work.

FIG. 35 is an explanatory diagram showing an operation of gripping a work.

FIG. 36 is an explanatory view showing an operation of gripping a work.

FIG. 37 is an explanatory view showing an operation of gripping a work.

FIG. 38 is an explanatory diagram showing an operation of gripping a work.

FIG. 39 is an explanatory diagram showing an operation of gripping a work.

FIG. 40 is an explanatory diagram showing an operation of gripping a work.

FIG. 41 is an explanatory diagram showing an operation of gripping a work.

FIG. 42 is an explanatory diagram showing an operation of gripping a work.

FIG. 43 is an explanatory view showing an operation of gripping a work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multi-task machine 10 Bed 12 First guide surface 14 Third guide surface 16 Fourth guide surface 20 Table 30 First headstock 35 First spindle 37 Actuator 40 Driving device 45 Workpiece 50 Second headstock 55 Second spindle 60 Turning mill unit 65 Turret type tool rest 70 Grinding unit 71 Fifth guide surface 74 External lab unit 76 Inner lab unit 90 Control device 350 Spindle 360 Collet device 370 Operating member 400 Sliding center 410 Center 700 Grinding Unit base 720 Turning table 750 External grinding wheel 770 Internal grinding wheel

Continuation of front page (56) References JP-A-1-210256 (JP, A) JP-A-64-40204 (JP, A) JP-B-51-14186 (JP, B2) (58) Fields investigated (Int) .Cl. ⁶ , DB name) B23B 31/00-31/20 B24B 5/02

Claims (3)

(57) [Claims] 1. A bed, a table slidably supported and controlled by a first linear guide surface provided on the bed, a first headstock mounted on the table, and a first headstock mounted on the table.
Slidable on a first spindle mounted on the headstock and controlled around a first rotation axis, and a second linear guide surface disposed on the table in parallel with the first linear guide surface. A second headstock supported and controlled, a second headstock mounted on the second headstock and controlled about a second rotation axis concentric with the first rotation axis, and a second headstock on the bed. A turning mill unit slidably supported on and controlled by a third linear guide surface disposed orthogonal to the first linear guide surface; and a turning mill unit disposed parallel to the third linear guide surface on the bed. A grinding unit slidably supported on and controlled by a fourth linear guide surface, wherein the first spindle is rotatably supported by the first headstock. A sliding center disposed inside the spindle and sliding along the axis of the spindle;
A sliding center and a collet device for gripping the outer periphery of the member are provided .
A fixed piston supporting a cylinder member and a cylinder member;
And is defined between the cylinder member and the fixed piston.
Supplying fluid pressure to the cylinder chamber
The main shaft of the multi-tasking machine where the material is driven. 2. A bed and a first bed disposed on the bed.
A table slidably supported and controlled on a linear guide surface
A first headstock mounted on a table;
Installed around the headstock and controlled around the first rotation axis
First spindle and on the table parallel to the first linear guide surface
The second linear guide surface is slidably supported by the
A second headstock controlled and a second headstock mounted on the second headstock.
A second axis of rotation controlled about a second axis of rotation concentric with the first axis of rotation;
And two spindles, and are arranged on the bed at right angles to the first linear guide surface.
Controlled by being slidably supported by the third linear guide surface provided
Turning mill unit and third linear guide on bed
Slidably supports a fourth linear guide surface disposed in parallel with the surface.
Multi-tasking machine with a grinding unit held and controlled
Machine, wherein the first spindle is rotatably mounted on the first headstock.
A spindle supported and disposed inside the spindle
A sliding center that slides along the spindle axis,
A collet device that grips the sliding center and the outer periphery of the member
Includes, Kore Tsu winding device, before and after being inserted into the spindle
A collet member having a tapered surface in the
Front taper of collet member attached to front end
An adapter having a tapered hole engaging the surface, and a collet
A collet operating member that engages the tapered surface at the rear of the member;
The main shaft of a multi-tasking machine comprising: 3. The adapter is between the collet member and the adapter.
The collet member in the direction to release the taper engagement of
3. The multi-tasking machine according to claim 2, further comprising:
axis.