JP2724062B2 - Spindle opposing lathe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the same each other two of the headstock
Are those about the spindle opposed type lathe to face the heart, in particular, attachment and detachment of the workpiece with respect to the two headstock spindle chuck
It is related to the improvement of.

[0002]

2. Description of the Related Art In a lathe , a work to be processed is provided.
Is held by the chuck of the spindle, rotated about the axis of rotation of the spindle, and rotated by the tool attached to the tool post.
Ri is processed is the place, the headstock on one lathe 2
A table may be provided. By doing so, two types of machining can be performed simultaneously in parallel, and machining efficiency is improved,
Moreover, it than can be constructed inexpensively and compactly in comparison with the case of providing two of the lathe, the conventional case of providing two headstock, Ru provided in parallel with each other on a base
In addition, Japanese Patent Application Laid-Open No. 63-84801, Japanese Utility Model Application Sho 62
-29203, etc.
It has also been practiced to provide concentrically opposed surfaces. Respectively
First and second spindles having first and second spindle chucks
The first and second headstocks rotatably supported on the base
If fixed in a state of concentrically facing each other, the rotation axis of the main shaft
When working from the side orthogonal to the first and second headstocks
To the same distance, no matter which of the first and second headstocks
The work can also be easily performed on these. Also,
The distance between the first and second spindle chucks is short and required for movement
The work time between the chucks is short.
Can be quickly carried out. Furthermore, the first and second
Use the space between the two headstocks as a common space
And secure space for maintenance, inspection, etc.
Lathe can be made more compact than
It is also possible to install and share equipment in that space.
This makes it possible to reduce costs.

[0003]

[Problems to be Solved by the Invention] In Lathes with Opposed Spindles
To transfer the work, and between the first and second spindle chucks.
It is also possible to provide a transfer device that automatically transfers the work,
As already mentioned in the publication,
I have. However, conventional spindle-turning lathes still lack machining capability.
There is room for improvement in terms of improvement of the rate and diversification of processing modes.
Therefore, the invention of claim 1 is directed to a lathe in which the spindle is opposed.
And this <br/> that enable diversification of improving and processing aspects of the machining efficiency was conceived as a problem. According to a second aspect of the present invention , in the lathe according to the first aspect of the present invention ,
The first and second holding devices must be constructed as inexpensively as possible.
It was done as a title. According to the third aspect of the present invention, in addition to the problems of the first aspect, the working environment can be improved and
It can prevent contamination of the equipment well and improve work efficiency.
SUMMARY OF THE INVENTION It is an object of the present invention to provide an opposed-spindle lathe capable of being rotated . According to a fourth aspect of the present invention, in addition to the object of the first aspect, a main shaft facing type in which only one work chip removal device is required.
It was made to provide a lathe .

[0004]

Means for Solving the Problems The main according to the invention of claim 1
In order to solve the above-mentioned problems, the shaft-facing lathe has the following requirements.
A base, (b) a first headstock fixed on the base and rotatably supporting a first spindle having a first spindle chuck at the tip, and (c) a first spindle fixed to the base and at the tip. (D) a second headstock rotatably supporting a second spindle having a second spindle chuck concentrically opposed to the chuck;
First temporary holding chuck concentrically opposed to one spindle chuck
On the base in the direction parallel to the rotation axis of the first spindle
The first spindle chuck is movable
A first holding device for delivering a workpiece, and (e) a second spindle
With a second temporary holding chuck concentrically facing the jack
Moves on the base only in the direction parallel to the axis of rotation of the second spindle
So that the workpiece can be received with the second spindle chuck.
A second holding device for transferring, and (f) transferring the workpiece to the first spindle.
While transporting in a direction parallel to the axis, the first spindle chuck
, Second spindle chuck, first temporary holding chuck and
Work can be delivered to and from the temporary holding chuck
It is intended to include a transfer device. According to a second aspect of the present invention, there is provided a main spindle opposed lathe further comprising : (g) an axis parallel to the axis of the first main spindle.
A first Z-axis slide movable in the Z-axis direction;
X-axis direction perpendicular to the axis of the first spindle on the first Z-axis slide
A first X-axis slide that is movable to
A first tool post attached to the slide, and (j) the first tool post.
Second Z-axis slider movable in the Z-axis direction parallel to the axis of the two spindles
And (k) the second spindle on its second Z-axis slide.
Second X-axis slide movable in the X-axis direction perpendicular to the axis
And (l) a second X-axis slide attached to the second X-axis slide.
A tool rest, and the first holding device and the second holding device.
Holding device is a first Z-axis slide and a second Z-axis slide, respectively.
And the Z-axis slide moves
The first spindle chuck and the second spindle chuck respectively
The main point is to be able to approach and separate from . According to a third aspect of the present invention, there is provided a spindle facing lathe further comprising a processing chamber provided with a partition wall.
And a housing partitioned into a transfer chamber and the first main body.
Headstock, the second headstock, the first holding device, and the
In second holding device processing chamber, wherein the transport apparatus it to the transfer chamber
Respectively, and between the housing partition wall
Opening and closing of the front wall and partition wall that form the transfer chamber
The gist is that a possible door is provided . Contract
Spindle opposed type lathe according to the invention of Motomeko 4, in order to solve the above problem, further, extends rearward from a lower portion of the space of the base between the first headstock and the second headstock, further diagonal
1st headstock and 2nd headstock with upwardly extending conveyor
It is an Abstract that it comprises a common processing refuse unloading device to a first headstock for unloading the swarf generated by machining and a second headstock in a.

[0005]

In the lathe according to the first aspect of the present invention, when the workpiece is supplied to the first and second headstocks ,
The chromatography click first, it is directly held in the second spindle chuck
Also, once the can first, after held in the second temporary holding chuck, first, also be held on the second spindle chuck,
When the workpiece is received from the first and second headstocks , it can be directly received from the first and second spindle chucks .
Once it is held by the first and second temporary holding chucks, it can be received from the first and second temporary holding chucks, and the efficiency of the combination of the order of holding and receiving can be improved. Improvement, diversification of processing modes, and the like can be achieved. Further
, The transport and the first workpiece, the second spindle chuck, the transfer of the workpiece with respect to the temporarily holding chuck is automatically performed by the transport device. Main shaft opposition according to the invention of claim 2
In the type lathe, the first holding device and the second holding device,
For moving the first and second turrets respectively
Attached to the first Z axis slide and the second Z axis slide
And the Z axis slide moves to
The chuck and the second spindle chuck are moved toward and away from each other.
You. In the spindle facing lathe according to the invention of claim 3 ,
Processing such as processing of workpieces and delivery of workpieces between the first and second spindle chucks and the first and second temporary holding chucks
Specification when working by a device provided in the chamber is performed
The door of the cut wall is closed, and the transfer device and the first and second spindle
Between the chuck and the first and second temporary holding chucks
Specifications if working from delivery, such as machining outdoor click is performed
The door of the cutting wall is opened. In addition, cleaning and inspection of transport equipment
Where workers work on equipment in the transfer room, such as
In this case, the doors on the front wall are opened and the first and second headstocks,
Cleaning and inspection of the second holding device, etc.
When the work is performed by a worker,
Both doors with the wall are opened. The spindle according to the invention of claim 4
In the opposed type lathe , machining chips generated by machining performed on the first and second headstocks are carried out by one common machining chip discharge device.

[0006]

According to the first aspect of the present invention, it is possible to improve the processing efficiency and diversify the processing mode. First,
Although it is an improvement in efficiency, the delivery and transfer of the work
Is automatically performed by the device, saving labor and work.
The time can be reduced, and the transport device can be
Efficient operation in combination with holding device
Can be. For example, if the spindle is the spindle of a lathe that rotates while holding the work, the spindle chuck
Remove the workpiece after machining from clean the reference surface of the spindle chuck to remove the machining chips, then prior to processing a workpiece
It is necessary to attach and transfer this work exchange.
If the equipment performs, during this series of operations
Be bound. In contrast, the work for the spindle chuck
If the holding device is used to attach and detach the
Will only be restrained while transferring the work between
While sharing the transfer device with the first and second headstocks,
Because the transfer device is restrained by one headstock,
Workpiece cannot be replaced on the headstock
Can avoid the occurrence of a situation like this
The machining efficiency of the entire lathe can be improved.
You. Next, as to the diversification of the processing mode, the holding posture of the workpiece on the spindle chuck can be reversed depending on which of the spindle chuck and the temporary holding chuck the workpiece is delivered first by the transfer device. Therefore , two different parts of the workpiece can be processed by one headstock,
Processing can be performed in various modes by appropriately selecting locations where the workpiece is processed on each of the two headstocks. Furthermore, word by the spindle chuck
The holding posture of the click is not limited to one kind, a work supply device, a work does not need to be supplied configured to be retained on the spindle chuck in a predetermined posture, The conveying device of a work <br/> Similarly, the configuration is no longer limited,
With the degree of freedom in designing the device is increased, the spindle opposed type-handed
The effect of increasing the degree of freedom of the configuration of the processing system including the board is obtained. In addition, the first and second holding devices are devices that move only in a direction parallel to the rotation axis of the first and second main shafts, and have a simple configuration and can be configured at low cost. According to the invention of claim 2, in order to move the tool post.
The first and second Z-axis slides of the first holding device and the second holding
The device and the first spindle chuck and the second spindle chuck respectively
Used as a moving device to approach and separate from
It is possible to reduce the cost by simplifying the configuration.
Wear. According to the invention of claim 3, since the cleaning or the like of the reference surface during machining and spindle chuck, both doors the wall and the partition wall before during operation of the apparatus provided in the processing chamber is closed,
Rutotomoni made me reduce the noise, processing chips and coolant
Do not splatter out of the housing and degrade the working environment
Of course, it is also possible to prevent the transfer device from getting into the transfer chamber and soiling the transfer device.
You. Further, removal of the work for cleaning the spindle chuck is to be performed by the holding device in the housing
It is possible, there is no need to open the door of the partition wall, follow
Open the door and remove the workpiece on the transfer device
And close the door for cleaning, then open the door again and
The number of times of opening and closing the door is smaller than when attaching
From this point, the effect of improving work efficiency can be obtained from this point as well.
According to the invention of claim 4, well only for two headstocks are provided one the processing refuse unloading device, requires less installation space compared to the case where the headstock each main
A shaft-facing lathe can be made compact and inexpensive. In particular, the processing waste removal device is
Extends from the lower part of the space between the headstock and the rear of the base,
With a conveyor that extends diagonally upward
Can be easily disposed of by throwing processing waste into the waste box from above.
However, since the waste removal device is expensive,
Can be shared by the first and second headstocks.
No.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. As shown in FIGS. 6 and 7, the lathe is provided in a housing 10. Housing 1
2 has a box shape, and the inside thereof is divided into two by a partition wall 14 erected on the edge of the base 12 as shown in FIG. The other is a transfer chamber 20 in which the work is transferred by the work transfer robot 18.

As shown in FIGS. 6 and 7, two doors 24 and 26 are attached to the front wall 22 constituting the transfer chamber 20 together with the partition wall 14 of the housing 10 so that they can be opened by pulling. A window 28 is provided and the transfer chamber 2
It is designed so that you can look inside 0. An operation panel 30 is also provided on the front wall 22. Further, a pair of side walls 32 and 34 constituting the transfer chamber 20 respectively include a work supply device 36 provided adjacent to the housing 10.
A work inlet 38 for receiving the work W from (see FIG. 3) and carrying the work W into the transfer chamber 20 and a work outlet 40 for unloading the processed work W are provided. The work W has a stepped cylindrical shape, and in the work supply device 36, a plurality of the work W are stacked with their small diameter portions facing upward.

As shown in FIG. 7, the partition wall 14 is also provided with two doors 44 and 46 which are independently provided at a short distance from each other, and are opened in opposite directions.

As shown in FIGS. 1 and 2, a column 50 is provided upright at the center in the width direction (the horizontal direction in FIG. 2) of the base 12 provided in the processing chamber 16. The column 50 has a length from the work supply device 36 side of the base 12 to the discharge side, and the first headstock 52 and the first headstock 52 are arranged below the side surface of the transfer chamber 20 side from the work supply device 36 side. The second headstock 54 is fixed.

On the first headstock 52, a first spindle 58 having a first spindle chuck 56 at the tip is rotatably supported around its axis. The first spindle chuck 56 is a three-jaw chuck that grips and releases the work W by opening and closing three jaws. A pulley 60 is provided at the rear end of the first main shaft 58.
Are attached so that they cannot rotate relative to each other, and a belt 6 is attached to a pulley 64 fixed to the output shaft of the first spindle drive motor 62.
The first spindle 58 is rotated by a first spindle drive motor 62.

On the second headstock 54, a second spindle 72 having a second spindle chuck 70 at the tip is rotatably supported around its axis. The second spindle chuck 70 is also a three-jaw chuck similar to the first spindle chuck 56,
The second spindle 72 is supported such that the second spindle chuck 70 is concentrically opposed to the first spindle chuck 56. The rotation of the second main shaft driving motor 76 is transmitted to the second main shaft 72 by a fixed pulley 74 at the rear end thereof, a fixed pulley 78 to the output shaft of the second main shaft driving motor 76, and a belt 80 to rotate the second main shaft 72. Can be

The first and second headstocks 52, 54 of the column 50
A first Z-axis slide 82 and a second Z-axis slide 84 are provided on the upper side of the side surface on which the first and second main shafts 58 and 72 are fixed.
Are provided so as to be movable in the Z-axis direction parallel to the rotation axis. The first and second Z-axis slides 82 and 84
And a pair of guide rails 8 fixed in the Z-axis direction
6,88 and slidably fitted to the column 50.
Nuts 94, 96 on screw shafts 90, 92 attached to
Are screwed together. The screw shaft 90 is rotated by a pulley 98, a belt 100, a pulley (not shown), and a first Z-axis slide driving motor 102, so that the first Z-axis slide 82 and the first headstock 52 and the second spindle of the column 50 are rotated. It can be moved between an intermediate position with the table 54 and an end on the first headstock 52 side. Further, the screw shaft 92 includes the pulley 104, the belt 106, and the pulley 108.
(See FIG. 2) and the second Z-axis slide drive motor 11
By being rotated by zero, the second Z-axis slide 84 is moved between the intermediate position of the column 50 and the end on the second headstock 54 side.

On the first and second Z-axis slides 82 and 84, first and second X-axis slides 116 and 118 are mounted so as to be movable in the X-axis direction (vertical direction). first,
The second X-axis slides 116 and 118 are slidably fitted to a pair of guide rails 120 and 121 provided on the first and second Z-axis slides 116 and 118, respectively. Second Z-axis slide 110, 112
Are screwed into screw shafts (not shown) supported by the first and second pulleys via pulleys 122 and 124, belts 126 and 128, and a pulley (not shown), respectively.
The first and second X-axis slides 1 are rotated by the second X-axis slide drive motors 130 and 132.
16, 118 are raised and lowered.

The first and second turret tool rests 134 and 136 are attached to the first and second X-axis slides 116 and 118, respectively, on the surfaces facing the first and second headstocks 52 and 54, respectively. I have. These turret tool rests 134 and 136
Have the same configuration, and the second turret tool rest 136 will be representatively described. 2nd turret tool post 136
As shown in FIG. 2, is mounted on the second X-axis slide 118 so as to be rotatable about a rotation axis parallel to the rotation axis of the second main shaft 72 and located in the same vertical plane. Four cutting tools 138 and 139 are attached to the second turret tool post 136 at regular intervals.
The total of eight cutting tools 138 and 139 are sequentially positioned at the use position (the position immediately below), and the second Z-axis slide 8
The workpiece W is processed by being moved in the Z-axis direction and the X-axis direction by the movement of the fourth and second X-axis slides 118.

Also, first and second Z-axis slides 82 and 84
As shown in FIG.
46, 148, the first and second temporary holding chucks 15
0 and 152 are fixed. As typically shown in FIGS. 4 and 5 for the first Z-axis slide 82, the bracket 146
The first temporary holding chuck 150 is attached to a protruding end of the first temporary holding chuck 150 so as to face the first spindle chuck 56 concentrically. This chuck 150
Is a three-jaw chuck similar to the first spindle chuck 56, and three jaws 154 are opened and closed to grip the workpiece W,
release. The first Z-axis slide 82 is movably attached to the column 50 and is a slide that moves only in the Z-axis direction. The first temporary holding chuck 150 moves the first main shaft 58 by moving the first Z-axis slide 82. The workpiece W is moved on the rotation axis and approaches and separates from the first spindle chuck 56 to transfer the workpiece W. The first Z-axis slide 82, the bracket 146, and the first temporary holding chuck 150 are the first holding device 1
56, the second Z-axis slide 84, the bracket 14
8. The second temporary holding chuck 152 is the second holding device 158.
It constitutes.

As shown in FIG. 1, the column 50 further includes first and second blowers for blowing off the processing powder attached to the reference surface for positioning the work W of the first and second spindles 58 and 72 by air. Devices 160 and 162 are provided. These first and second blowing devices 160 and 162
The first and second spindles 58,
An operating position which faces the workpiece 72 and blows off the processing powder;
The workpiece W is retracted from a position facing the first and second main shafts 58 and 72 and is moved to a retracted position that does not hinder processing of the work W.

Further, between the first headstock 52 and the second headstock 54, there is provided a work chip unloading device 170. As shown in FIG. 1, the portion of the base 12 between the first and second headstocks 52 and 54 is inclined from the position directly below the first and second headstock chucks 56 and 70 so as to approach each other. A processing waste collecting hole 172 having a wall surface is provided, and one end of a belt conveyor 174 of the processing waste discharging device 170 is provided in the collecting hole 172 as shown in FIG. Is to be placed. The belt conveyor 174 is pulled out obliquely upward from the rear end of the base 12, and is driven by a conveyor driving motor 175 at the upper end thereof.
On the lower side, a waste box 176 is provided, and a belt conveyor 174 is provided.
For accommodating the processing waste conveyed by the.

The doors 44 and 46 of the partition wall 14 for partitioning the housing 10 are respectively provided with the first spindle chuck 5.
6 and the first temporary holding chuck 150, and the second spindle chuck 70 and the second temporary holding chuck 152 are provided at corresponding positions.

A work transfer robot 18 provided in the transfer chamber 20 is slidably fitted on a guide rail 180 mounted on the front surface of the base 12 in the Z-axis direction, and is moved by a moving device (not shown) in the Z-axis direction. It is moved to. The work transfer robot 18 includes a rotation board 182 that can rotate around a vertical axis, a rotation arm 184 that can rotate around a horizontal axis, and first and second rotation arms 184 that are provided at the ends of the rotation arm 184. Transport chucks 186, 188. These transport chucks 186 and 188 are three-jaw chucks, which are provided back to back on the wrist 190 at the tip of the rotating arm 184, and the first spindle chuck 56 and the first temporary chuck 56 are rotated by the rotation of the rotating arm 184. Holding chuck 15
0, or between the second spindle chuck 70 and the second temporary holding chuck 152, and the first spindle chuck 56 or the second spindle chuck 56 is rotated by 180 degrees around the rotation arm axis of the wrist 190. Twin spindle chuck 70 and first temporary holding chuck 150 or second temporary holding chuck 1
The workpiece W is selectively delivered to the workpiece 52 and delivered. The work transfer robot 18 constitutes a transfer device. The wrist 190 can rotate intermittently by 90 degrees in both the forward and reverse directions.

Next, the operation will be described. When processing the work W, the processing sequence and the location to be processed change depending on whether the work transfer robot 18 transfers the work W to the spindle chuck or the temporary holding chuck. The case where the processing of the part and the large diameter part are sequentially performed will be described. In FIG. 8, the work W is illustrated in a T shape, and the horizontal bar of the T shape indicates a large diameter portion, and the vertical bar indicates a small diameter portion. The transfer of the work W is performed in a predetermined order by moving the work transfer robot 18 in the Z-axis direction, turning the turntable 182, the turning arm 184 and the wrist 190 of the work transfer robot 18, and opening and closing each chuck. Each of these actions is already known,
Detailed description is omitted.

At the start of processing, the workpiece transfer robot 18
Goes to the work supply device 36 to pick up the work W, grips the work W with the first transfer chuck 186, and moves to the first headstock 52. At this time, the turning arm 184 projects out of the housing 10 from the work loading port 38 to grip the work W, and after the work transfer robot 18 moves to the vicinity of the first headstock 52, the door 44 is opened and the turning arm 184 is rotated to enter the processing chamber 16 and the first transport chuck 1
The axis 86 stops at a position where the axis coincides with the axis of the first spindle chuck 56. Then, the first transfer chuck 186
After the workpiece W is transferred from the first spindle chuck 56 to the first spindle chuck 56, the rotating arm 184 is withdrawn from the processing chamber 16 and
Is closed, and processing is started.

The work transfer robot 18 is a new work W
To the work supply device 36, and after the processing in the first headstock 52 is completed, the work is replaced with the processed work W.
In the first headstock 52, the work W is transferred from the first spindle chuck 56 to the first temporary holding chuck 150 after the processing is completed. After the first temporary holding chuck 150 moves in the Z-axis direction and grips the workpiece W, and the gripping of the workpiece W by the first spindle chuck 56 is released, the first spindle chuck 56
After the delivery, the first blowing device 160 cleans the reference surface of the first spindle chuck 56. After the cleaning is completed, the door 44 is opened, the rotating arm 184 is rotated into the processing chamber 16, and the transport chucks 186, 188 are aligned with the axes of the first spindle chuck 56 and the temporary holding chuck 150. Then, a new work W is transferred to the first spindle chuck 56, and the processed work W is transferred from the first temporary holding chuck 150 to the second transport chuck 188. Second transfer chuck 1
Delivery of the workpiece W between the first temporary holding chuck 88 and the first temporary holding chuck 150 is performed by moving one of the workpiece transfer robot 18 and the first temporary holding chuck 150 in the Z-axis direction. After the delivery is completed, the rotating arm 184 is withdrawn from the processing chamber 16, the door 44 is closed, processing is started on the first headstock 52, and the work transfer robot 18 transfers the work W to the second headstock 54. Transport.

The work transfer robot 18 is connected to the second headstock 54.
When it reaches the vicinity, the door 46 is opened, the rotation arm 184 is rotated into the processing chamber 16, the work W is transferred to the second spindle chuck 70, and after the rotation arm 184 retreats, the door 46 is closed. Processing starts. Then, the work transfer robot 18 is moved in parallel with the processing performed on the first and second headstocks 52 and 54, and the work supply device 36 is provided.
To the first headstock 52 to receive a new workpiece W.
After the processing and cleaning are completed, the workpiece W is transferred into the processing chamber 16.

The processed work W received by the first headstock 52 is transferred by the work transfer robot 18, and after the processing and cleaning is completed in the second headstock 54, the processed work W Although the workpiece W is exchanged, the workpiece W processed in the second headstock 54 is held by the second temporary holding chuck 152 for cleaning the second spindle chuck 70 by the second blowing device 162. The work transfer robot 18 transfers the work W that has been processed in the first headstock 52 to the second spindle chuck 70 and the second temporary holding chuck 15.
After receiving the processed work W from 2 and receiving it, the work W exits from the processing chamber 16 and moves to the work discharge position, and the rotating arm 184 projects outside from the work discharge port to release the work W. At this time, the work W is discharged in the same posture as when supplying. After the discharge, the work transfer robot 18 goes to the work supply device 36 to pick up the work, and then moves sequentially to the first and second headstocks 52 and 54 to transfer the work W as described above.

As described above, in the first and second headstocks 52 and 54, after the processing of the work W is completed, the reference surfaces of the first and second spindle chucks 56 and 70 are moved to the first and second blowing devices 16 and 70.
At this time, the work W that has been processed is first and second temporary holding chucks 150 and 15.
The processing efficiency is improved as compared with the case where the work transfer robot 18 receives the work W for cleaning. First and second temporary holding chucks 15
If there is no 0, 152, the doors 44, 46 are opened after the processing is completed, and the work transfer robot 18 receives the work W,
After exiting from the processing chamber 16, the door 44 is closed and cleaning is performed. After the cleaning is completed, the door 44 is opened again and the work transfer robot 18 enters the processing chamber 16 and the new work W is transferred to the first spindle. It is necessary to attach to the chuck 56, open and close the door 44 twice, and wait for the work transfer robot 18 to finish cleaning. In contrast, if the first and second temporary holding chucks 150 and 152 are provided, the first and second spindle chucks 56 and 70 can be cleaned by temporarily holding the processed work W. The work transfer robot 18 may be moved to the first and second headstocks 52 and 54 so as to transfer the work W at the end of the cleaning, and the opening and closing of the door 44 may be performed when the work W is cleaned. Only one delivery is required, and the delivery of the processed work W and the unprocessed work W by the work transfer robot 18 can be performed at one time. Further, the work transfer robot 18 does not need to wait for the completion of cleaning, and during that time, can perform other operations such as receiving a new work W and discharging the processed work W, so that the processing can be performed efficiently. it can. For example, without providing the temporary holding chuck, 45 minutes are required between the receiving of the workpiece W from the workpiece supply device 36 and the discharging of the processed workpiece W.
If the processing requires seconds, it can be reduced to 30 seconds.

During the processing of the work W and the cleaning of the first and second spindle chucks 56 and 70, the doors 44 and 4 are provided.
6 is closed, and the processing and cleaning are performed in the processing chamber 16, so that the coolant and the processing debris are not scattered and fallen on the workers, and the air in the factory is not polluted. The effect of reducing the noise and improving the working environment is obtained. Even if the doors 44 and 46 are open, the transfer chamber 2
If the doors 24 and 26 are closed, the coolant and the processing waste do not scatter, but in that case, the coolant and the processing waste accumulate in the transfer chamber 20 and the work transfer robot 18 travels. Undesirably hindering. Processing and cleaning are desirably performed with the doors 44 and 46 closed as described above, and the effect of improving the working environment without lowering the processing efficiency can be obtained by the holding devices 156 and 1.
This is because the work W is temporarily held.

Further, doors 24, 26 and doors 44, 46
Are closed, the first and second headstocks 52, 54
Are double-covered, noise and the like are extremely reduced, and if the doors 44 and 46 are closed, work can be performed in the transfer chamber 20 during processing or cleaning. .

In this lathe, since the column 50 is erected vertically on the base 10, the first and second Z-axis slides 82 and 84 and the X-axis slide 116 are provided even if the processing chips are scattered. , 118 do not accumulate on the running surface, and their running is not hindered.

Further, the first and second turret tool rests 1
Reference numerals 34 and 136 denote first and second X-axis slides 11 provided on the front surface of a column 50 vertically erected on the base 10.
6, 118, it is close to the doors 44, 46, and the operator can easily change tools.

Next, based on FIGS. 9 to 11, the work W
Next, another delivery and processing mode will be described. According to the order shown in FIG. 9, the work W received by the work transfer robot 18 from the work supply device 36 includes a first temporary holding chuck 150, a first spindle chuck 56, a work transfer robot 18, and a second temporary holding chuck. 152, the second spindle chuck 70, and the workpiece transfer robot 18 are delivered in this order. First, the large diameter portion is processed, and then the small diameter portion is processed.

In addition, according to the order shown in FIG. 10, the work W includes the first spindle chuck 56 and the first temporarily holding chuck 1.
50, work transfer robot 18, second temporary holding chuck 152, second spindle chuck 70, work transfer robot 1
8 and two types of processing are performed on the small diameter portion of the work W. Further, according to the order shown in FIG. 11, the work W includes the first temporary holding chuck 150, the first spindle chuck 56, the work transfer robot 18, and the second spindle chuck 7.
0, the second temporary holding chuck 152, and the work transfer robot 18 in this order, and the large diameter portion of the work W is subjected to two types of processing.

In the examples shown in FIGS. 9 to 11, the workpiece W is transferred to the spindle chuck 56 or 70 before being transferred.
In this case, the doors 44 and 46 are opened before the reference surface is cleaned after the processing is completed, and the work transfer robot 18 has been processed. After receiving the workpiece W from the spindle chucks 56 and 70 and passing the unprocessed workpiece W to the temporary holding chucks 150 and 152, the door 44,
The cleaning is performed by closing 46, and after the cleaning is completed, the workpiece W is transferred from the temporary holding chucks 150 and 152 to the spindle chucks 56 and 70 to perform processing. The door 44,
46 only needs to be opened and closed once.
8 does not need to wait for the completion of cleaning, and the effect of improving the working environment can be obtained without lowering the processing efficiency.

Further, as shown in FIG. 12, if the work W is not held by the first temporary holding chuck 150, the large-diameter portion and the small-diameter portion of the work W are processed, and the work W It can be discharged in the posture of.

Further, the workpiece W is processed in the first headstock 52, then processed in the second headstock 54, and processed again in the first headstock 52. Processing can also be performed. The delivery order of the work W may be set according to the place where the work W is processed and the order in which the work is performed, and the processing may be performed while being held in a predetermined posture on a predetermined headstock.

In addition, without departing from the scope of the claims, the present invention can be implemented in various modified and improved forms based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a front view showing a lathe according to an embodiment of the present invention without a housing.

FIG. 2 is a side sectional view of the lathe.

FIG. 3 is a perspective view of the lathe.

FIG. 4 is a front view showing a holding device provided on the lathe.

FIG. 5 is a side view of the holding device.

FIG. 6 is a perspective view showing an appearance of the lathe.

FIG. 7 is a front view showing the appearance of the lathe.

FIG. 8 is a diagram for explaining the transfer of a workpiece between a spindle chuck of two headstocks provided on the lathe and a temporary holding chuck provided corresponding to the spindle chuck and a workpiece transfer robot.

FIG. 9 is a view for explaining another mode of delivery of the work.

FIG. 10 is a diagram illustrating still another mode of delivery of the work.

FIG. 11 is a diagram illustrating still another mode of delivery of the work.

FIG. 12 is a diagram illustrating still another mode of delivery of the work.

[Explanation of symbols]

 Reference Signs List 10 housing 12 base 14 partition wall 16 processing chamber 18 work transfer robot 20 transfer chamber 44, 46 door 52 first spindle head 54 second spindle head 56 first spindle chuck 58 first spindle 70 second spindle chuck 72 second spindle 82 First Z-axis slide 84 Second Z-axis slide 146 Bracket 148 Bracket 150 First temporary holding chuck 152 Second temporary holding chuck 156 First holding device 158 Second holding device 170 Processing waste unloading device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Gen Ogawa 19, Chausan Yamamachi, Chiryu-shi, Aichi Prefecture Inside Fuji Machinery Manufacturing Co., Ltd. Address Fuji Machine Manufacturing Co., Ltd. (72) Inventor Hiroya Ishikawa 19, Chamachi, Yamamachi, Chiryu-shi, Aichi Prefecture Fuji Machine Manufacturing Co., Ltd. 1 (72) Inventor Nobuo Kogishi 161-53, Higashishinmachi, Iwata-shi, Shizuoka (56) References JP-A-63-84801 (JP, A) Japanese Utility Model Application 62-29203 (JP, U)

Claims (4)

(57) [Claims] 1. A base, a first headstock fixed on the base and rotatably supporting a first spindle having a first spindle chuck at a tip, and a first headstock fixed on the base and a tip at the tip. A second spindle head rotatably supporting a second spindle having a second spindle chuck concentrically opposed to the spindle chuck, and a first temporary holding chuck concentrically opposed to the first spindle chuck.
The axis of rotation of the first spindle on the base with a jack
Is provided so as to be movable only in a direction parallel to
A first holding device for transferring a work to and from the chuck, and a second temporary holding chuck concentrically opposed to the second spindle chuck.
The axis of rotation of the second spindle on the base with a jack
The second spindle is provided so as to be movable only in a direction parallel to the second spindle.
Second holding device that transfers work to and from the chuck
When, to convey the workpiece in a direction parallel to the axis of the first spindle
And the first spindle chuck and the second spindle chuck
The first temporary holding chuck and the second temporary holding chuck.
Transfer device that can transfer work to and from the holding chuck
And a lathe opposed to the spindle. 2. Further, The first movable in the Z-axis direction parallel to the axis of the first main shaft.
Z-axis slide, On the first Z-axis slide, the axis perpendicular to the axis of the first spindle
A first X-axis slide movable in the X-axis direction, A first turret attached to the first X-axis slide, The second movable in the Z-axis direction parallel to the axis of the second main shaft.
Z-axis slide, On the second Z-axis slide, the axis perpendicular to the axis of the second spindle
A second X-axis slide movable in the X-axis direction, A second turret attached to the second X-axis slide, Comprising, and the first holding device and the second holding device
Are respectively the first Z-axis slide and the second Z-axis slide.
And the Z-axis slide moves
The first spindle chuck and the second spindle chuck respectively
2. The method according to claim 1, wherein
The spindle facing lathe described. 3. The process chamber is further transported by a partition wall.
A housing separated from the first headstock,
The second headstock, the first holding device, and the second holding
The device is in the processing chamber, and the transfer device is in the transfer chamber.
And the partition of the housing is arranged respectively.
A front wall forming the transfer chamber between the partition wall and the front wall;
And it is characterized by the fact that each door can be opened and closed
The main spindle facing type lathe according to claim 1 or 2, wherein: 4. Additionally, extending from the lower portion of the space between the second headstock and said first headstock to the base of the rear, is
And a conveyor that extends diagonally upwards.
A common machining waste removal device for the first and second headstocks that carries out machining waste generated by machining with the two headstocks
Spindle opposed type lathe according to any one of 請 Motomeko 1 to 3, characterized in that it comprises.