JPH10124127A - Thread cutting device using nc lathe, and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thread cutting device using an NC lathe capable of removing the evil influences of a long length of chips by setting the thread cutting part of a work in plural sections in the axial direction of the thread to be worked, and dividing the thread cutting work for every section thereby making the length of the chips easy to be treated. SOLUTION: This thread cutting method is provided with a section setting process for setting the thread cutting part of a work in the plural sections in the axial direction of the thread to be worked by the pattern program of the NC lathe, a working process for cutting the thread from one tip of the axial direction of each section to the other tip by the tool 1 of the NC lathe, and separating process for suspending the work process for moving the tool 1 to separate the tool 1 from the work 2 whenever the working process of each section is finished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread cutting device using an NC lathe and a method therefor.

[0002]

2. Description of the Related Art A conventional thread cutting device using an NC lathe and a method thereof will be described below. In a conventional threading device and method using an NC lathe, the NC lathe G9
2, a thread cutting cycle program such as G76 was used. FIG. 1 is a schematic diagram showing a moving path of a tool of an NC lathe in this conventional method, for example, FANUC.

A configuration for carrying out this conventional thread cutting method using an NC lathe will be described with reference to FIG.
(1), (2), (3), (4) and (5) are points on the path for indicating the movement path of the tool, 1 is a tool, 2 is a work, 3 is a chuck, and 4 is a spindle. is there.

[0004] The above-described thread cutting device and method will be described with reference to FIG. 1 which shows a path of movement of a tool of an NC lathe. In the above method, the tool 1 is (1)-(2)-(3)-
(4) -Move the route of (5). Between (2) and (3), the robot moves while performing a thread cutting operation. By repeating this series of operations, thread cutting is performed.

As can be seen from the above description, in the conventional method, the threading operation is performed from one end to the other end in the axial direction of the portion requiring threading, and the depth of the threading is gradually reduced for each operation. Threading was performed by repeating while deepening.

[0006]

However, in the above-described threading device and the method therefor, the work material is made of a material such as low-carbon steel, stainless steel, aluminum material, resin, or the like, in which the viscosity of the work is strong and soft. In this case, the chips do not break until the thread cutting operation from one end to the other end in the axial direction of the part requiring thread cutting is completed, and the chips are wrapped around a work, a tool, a chuck, or the like. And work defects, which hindered the automation of machining.

The present invention has been made to solve the above problems, and
The part of the work that requires thread cutting is set in multiple sections in the axial direction of the screw to be created, and the thread cutting work is divided for each section, making the length of chips easier to process, It is an object of the present invention to provide a thread cutting device using an NC lathe and a method therefor that eliminate the adverse effects caused by the long cutting chips.

[0008]

In order to solve the above-mentioned problems, the present invention sets a portion requiring threading of a work in a plurality of sections in the axial direction of the work by using a pattern program of an NC lathe. A section setting step, a work step of performing a thread cutting operation from one end in the axial direction to the other end of each section by using a tool of an NC lathe, and interrupting the work step each time the work step in each section is completed And a separating step of moving the tool to separate the tool from the work.

Further, the present invention is a thread cutting method using an NC lathe in which a plurality of sections set in the section setting step partially overlap each other and are adjacent to each other.

Further, the present invention is a thread cutting method using an NC lathe adjacent to a plurality of sections to be set in the section setting step, without partially overlapping with each other and without any intervals. .

Further, in the present invention, the work process and the separation process are alternately and repeatedly performed, and the work process is performed every time the work process in one section is completed until the thread cutting work in all sections is completed. And a thread cutting method using an NC lathe, which starts the operation process in the section where the thread cutting operation is not completed.

In the present invention, the working step and the separating step are alternately and repeatedly performed, and the working step is repeatedly performed until the threading work in a predetermined section is completed. This is a thread cutting method using an NC lathe in which the work process of another section is started after the completion of.

Further, the present invention provides a spindle for supporting and rotating a workpiece, a motor for rotating the spindle, a driving device for moving a tool in the axial direction of the workpiece and in a direction orthogonal to the axial direction, and the spindle. The motor and the driving device are controlled by a signal relating to the rotation state of the main shaft from a position coder connected to, and a thread cutting operation is interrupted for each of a plurality of sections set in the axial direction of the work to move the tool. And a control device for separating the tool from the work.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) Hereinafter, a configuration for carrying out a thread cutting method using an NC lathe according to a first embodiment of the present invention will be described with reference to FIG. FIG. 3 shows the first embodiment of the present invention.
It is the schematic which shows the path | route of the tool movement of the NC lathe in the thread cutting method using the NC lathe which is the embodiment of the present invention.
(1), (2), (3), (4), (5), (6),
(7), (8), (9), (10), (11) and (1)
2) is a point on the path for indicating the movement path of the tool, 1 is a tool, 2 is a work, 3 is a chuck, and 4 is a tailstock shaft.

Hereinafter, N according to the first embodiment of the present invention will be described.
A thread cutting method using a C lathe will be described with reference to FIG.
First, tool 1 is (1)-(2)-
It moves along the route of (4)-(9). (2)-
(4) Perform shallow thread cutting while moving. Next, as step 2, the robot moves along the route of (9)-(8). Next, as step 3, (8)-(3)-(6)-
It moves along the route of (11). Between (3) and (6), the threading work is performed shallowly while moving. Next, as step 4, the robot moves along the route of (11)-(10).
Next, as step 5, (10)-(5)-(7)-(1
Move along the path of 2). Between (5) and (7), shallow threading work is performed while moving. Next, as step 6, the robot moves along the route (12)-(1). At the stage where the operations in steps 1, 3 and 5 for performing the thread cutting operation in each section have been performed once, since the thread cutting in each section is performed only shallowly, the series of operations from step 1 to step 6 is performed in all sections. The operation is repeatedly performed until the operation is completed. In steps 1, 3 and 5, the threading depth is increased each time the series of operations from step 1 to step 6 is repeated.

As described above, according to the present embodiment, the thread cutting is performed in steps 1, 3, 5 for performing the thread cutting operation in each section.
And steps 2, 4, and 6 for moving between the sections where the work is performed, and threading is performed by repeating a series of steps 1 to 6. Thereby, the cutting chips generated by the thread cutting operation can be divided, the adverse effects caused by the generation of long cutting chips are eliminated, and there is no need to interrupt the processing or remove the cutting chips trapped during the processing. Therefore, the processing time is also reduced. Further, automation of the processing is also facilitated. (Embodiment 2) Hereinafter, a configuration for implementing a thread cutting method using an NC lathe according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a second embodiment of the present invention.
It is the schematic which shows the path | route of the tool movement of the NC lathe in the thread cutting method using the NC lathe which is the embodiment of the present invention.
(1), (2), (3), (4), (5), (6),
(7), (8), (9), (10), (11) and (1)
2) is a point on the path for indicating the movement path of the tool, 1 is a tool, 2 is a work, 3 is a chuck, and 4 is a tailstock shaft.

Hereinafter, N according to a second embodiment of the present invention will be described.
A thread cutting method using a C lathe will be described with reference to FIG.
First, tool 1 is (1)-(2)-
It moves along the route of (4)-(9)-(1).
Between (2) and (4), the threading work is performed shallowly while moving. Next, this step 1 is repeated until the threading operation in this section is completed, and the threading depth is increased each time step 1 is repeated. In addition, in the case of the last completed threading work, do not return to (1) from (9),
The tool 1 stays at the position (9). After the completion of the threading work in this section, the robot moves along the route of (9)-(8) as step 2. Next, as step 3, (8)-
It moves along the route of (3)-(6)-(11)-(8). Between (3) and (6), the threading work is performed shallowly while moving. Next, this step 3 is repeated until the threading operation in this section is completed, and the threading depth is increased each time step 3 is repeated. Also in this case, in the case of the last completed threading operation, (11)
Does not return to (8), the tool 1 stays at the position of (11). After the completion of the threading work in this section, the robot moves along the route of (11)-(10) as step 4. Next, as step 5, (10)-(5)-(7)-(12)-
It moves along the route of (10). Between (5) and (7), shallow threading work is performed while moving. Next, this step 5 is repeated until the threading operation in this section is completed, and the threading depth is increased each time step 5 is repeated. After the completion of the thread cutting work in this section, the robot moves along the route of (10)-(1) as step 6. Steps 1, 3 and 5 for performing thread cutting work in each section
In the stage after each operation in step 1, since the thread cutting in each section is performed only shallowly, steps 1, 3, and 5 are performed.
Are repeated until the threading operation of each section is completed. In steps 1, 3 and 5, the threading depth is increased each time each step is repeated.

As described above, according to the present embodiment, the thread cutting is performed in steps 1, 3, 5 for performing the thread cutting work in each section.
And steps 2, 4, and 6 for moving between the sections where the work is performed, and repeating the steps of performing the thread cutting work for the section until the thread cutting work for the section is completed. After the completion of the step, a step of performing a threading operation in another section is started through a moving step, and the step is repeatedly performed until the threading operation in that section is completed. By repeating this operation, thread cutting is performed. This makes it possible to divide the chips generated by the thread cutting operation, eliminate the adverse effects caused by the generation of long chips, and interrupt the processing,
Alternatively, since it is not necessary to remove cuttings entangled during the processing, the processing time is also reduced. Further, automation of the processing is also facilitated. (Embodiment 3) Hereinafter, a configuration for implementing a thread cutting method using an NC lathe according to a third embodiment of the present invention will be described with reference to FIG. FIG. 2 is a view showing a third embodiment of the present invention, which is a method of cutting thread using an NC lathe.
It is the schematic which shows the path | route of the movement of the tool of C lathe.
(1), (2), (3), (4), (5), (6),
(7) and (8) are points on the path for indicating the movement path of the tool, 1 is the tool, 2 is the work, 3 is the chuck, and 4 is the tailstock shaft.

Hereinafter, N according to a third embodiment of the present invention will be described.
A thread cutting method using a C lathe will be described with reference to FIG.
In the above method, the tool 1 includes (1)-
(2)-(3)-(6)-(1) is moved.
Between (2) and (3), the threading work is performed shallowly while moving. Next, as step 2, (1)-(2)-(4)
-Move along the route of (7)-(1). Between (3) and (4), the threading work is performed shallowly while moving. Next, as step 3, (1)-(2)-(5)-(8)-(1)
Move on the route. Between (4) and (5), the threading work is performed shallowly while moving. (2)-(3), (3)-
At the stage where the thread cutting work in each section of (4), (4)-(5) has been performed once, since the thread cutting in each section is performed only shallowly, a series of work from step 1 to step 3 is performed in all sections. Until the threading of
In each step, the threading depth is increased each time a series of operations from Step 1 to Step 3 is repeated.

As described above, according to the present embodiment, the length of the swarf is suppressed to a relatively easy-to-process length, and the creation of a pattern program is relatively easy. However, when this method is used, the processing time is longer than in the first and second embodiments. (Embodiment 4) Hereinafter, a configuration for implementing a thread cutting method using an NC lathe according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 shows the first embodiment of the present invention.
It is the schematic which shows the path | route of the tool movement of the NC lathe in the thread cutting method using the NC lathe which is the embodiment of the present invention.
(1), (2), (3), (4), (5), (6),
(7) and (8) are points on the path for indicating the movement path of the tool, 1 is the tool, 2 is the work, 3 is the chuck, and 4 is the tailstock shaft.

Hereinafter, N according to a fourth embodiment of the present invention will be described.
A thread cutting method using a C lathe will be described with reference to FIG.
First, tool 1 is (1)-(2)-
It moves along the route of (3)-(8). (2)-
(3) Perform shallow thread cutting work while moving. Next, as step 2, the robot moves along the route of (8)-(3)-(4)-(7). Between (3) and (4), shallow threading work is performed while moving. Next, as step 3, the robot moves along the route of (7)-(4)-(5)-(6). Between (4) and (5), the threading work is performed shallowly while moving. Next, as step 4, the robot moves along the route of (6)-(1). At the stage where the operations in steps 1, 2 and 3 for performing the thread cutting work in each section have been performed once, since the thread cutting in each section is performed only shallowly, the series of work from step 1 to step 4 is performed in all sections. Steps 1 and 2 are repeated until the work is completed.
In steps 3 and 3, the threading depth is increased each time the series of operations from step 1 to step 4 is repeated.

As described above, according to the present embodiment, a plurality of sections of the workpiece are formed in the axial direction of the screw to be created.
The same effects as in the first embodiment can be obtained by setting the sections so that they are adjacent to each other without overlapping or leaving an interval, and performing the thread cutting work in each section in the same manner as in the first embodiment. (Embodiment 5) Hereinafter, a configuration for implementing a thread cutting method using an NC lathe according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 4 shows a fifth embodiment of the present invention.
It is the schematic which shows the path | route of the tool movement of the NC lathe in the thread cutting method using the NC lathe which is the embodiment of the present invention.
(1), (2), (3), (4), (5), (6),
(7) and (8) are points on the path for indicating the movement path of the tool, 1 is the tool, 2 is the work, 3 is the chuck, and 4 is the tailstock shaft.

Hereinafter, the fifth embodiment of the present invention, N
A thread cutting method using a C lathe will be described with reference to FIG.
First, tool 1 is (1)-(2)-
It moves along the route of (3)-(8)-(1).
Between (2) and (3), shallow thread cutting work is performed while moving. Next, this step 1 is repeated until the threading operation in this section is completed, and the threading depth is increased each time step 1 is repeated. In addition, in the case of the last completed threading work, it does not return to (1) from (8),
The tool 1 stays at the position (8). After the completion of the threading work in this section, as step 2, (8)-(3)-
It moves along the route of (4)-(7)-(8).
Between (3) and (4), shallow threading work is performed while moving. Next, this step 2 is repeated until the threading operation in this section is completed, and the threading depth is increased every time step 3 is repeated. Also in this case, in the case of the last completed threading operation, (7) to (8)
The tool 1 stays at the position (7) without returning to step (7). After the completion of the threading work in this section, the next step 3 is (7)
It moves along the route of (4)-(5)-(6)-(7). Between (4) and (5), the threading work is performed shallowly while moving. Next, this step 3 is repeated until the threading operation in this section is completed, and the threading depth is increased each time step 3 is repeated. In this case, in the case of the last completed threading operation, the tool 1 does not return from (6) to (7) but stays at the position (6). After the completion of the thread cutting work in this section, the robot moves along the route of (6)-(1) as step 4. At the stage where each operation in the steps 1, 2 and 3 for performing the thread cutting operation of each section has been performed once, since the thread cutting of each section is performed only shallowly, the steps up to the steps 1, 2 and 3 are respectively performed for each section. This is repeated until the threading operation is completed, and in steps 1, 2 and 3, the threading depth is increased each time each step is repeated.

As described above, according to the present embodiment, a plurality of sections of the workpiece are formed in the axial direction of the screw to be created.
The same effect as in the second embodiment can be obtained by setting the sections so as to be adjacent to each other without overlapping or leaving an interval and performing the thread cutting operation in each section in the same manner as in the second embodiment. (Embodiment 6) Hereinafter, a configuration of a thread cutting device using an NC lathe according to a sixth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a schematic diagram showing a thread cutting device using an NC lathe according to a sixth embodiment of the present invention. 1 is a tool, 2 is a work, 3 is a chuck, 4 is a tailstock, 5 is a motor, 6 is a spindle, 7 is a position coder, 8
Is a control device, and 9 is a drive device.

Hereinafter, N according to a sixth embodiment of the present invention will be described.
The operation of the thread cutting device using the C lathe will be described with reference to FIG. The work 2 is supported by the chuck 3 and the tailstock 4, and rotates with the rotation of the main shaft 6 rotated by the motor 5. The tool 1 is driven by a driving device 9 and moves in the axial direction of the work and in a direction orthogonal to the axial direction of the work. The motor 5 and the driving device 9 are controlled by a control device 8. The control device 8 controls the tool 1 in accordance with the setting based on a signal regarding the rotation state of the spindle from a position coder 7 connected to the spindle. It is moved in the same manner as in the first embodiment.

As described above, according to the present embodiment, by moving the tool and performing the thread cutting in the same manner as in the first embodiment, the chips generated by the thread cutting operation can be divided, and long chips are generated. The adverse effect of this is eliminated, and it is not necessary to interrupt the processing or to remove the cuttings caught during the processing, so that the processing time is also reduced. Further, automation of the processing is also facilitated.

In each of the embodiments, the end of the thread cutting operation in the section means that the thread cutting operation is completed once from one end to the other end of the section, and the completion of the thread cutting operation in the section means that the thread cutting operation is completed in the section. This means that the work has been completed to the desired depth.

Further, the tool 1 according to the first and second embodiments has a section between (2) and (4), a section between (3) and (6), and a section between (5) and (5).
The operation between (7) is an example of implementation of the work process of the present invention.

In the first and second embodiments, the workpieces (2)-(4), (3)-(6), and (5)-
The interval (7) is an example of a plurality of sections of the work of the present invention set in the axial direction of the screw to be created.

Further, the tool 1 according to the first and second embodiments, between (4) and (9), between (6) and (11), and (7)-
The operation between (12) is an example of implementation of the separation step of the present invention.

Further, (2) of the tool 1 in the third embodiment
The operations between-(3), (3)-(4), and (4)-(5) are examples of implementation of the working process of the present invention.

Further, (2) of the work in the third embodiment
Between (3), (3)-(4), and (4)-(5) are examples of a plurality of sections of the work of the present invention set in the axial direction of the screw to be created. is there.

Further, (3) of the tool 1 in the third embodiment
The operations between-(6), (4)-(7) and (5)-(8) are examples of implementation of the separation step of the present invention.

Further, the tool 1 according to the fourth and fifth embodiments, between (2)-(3), between (3)-(4), and (4)-
The operation between (5) is an example of implementation of the work process of the present invention.

Further, the workpieces (2)-(3), (3)-(4), and (4)-
(5) is an example of a plurality of sections of the work of the present invention set in the axial direction of the screw to be created.

Further, the tool 1 according to the fourth and fifth embodiments is (3)-(8) in step 1; (4)-(7) in step 3; and (5)-in step 5; (6)
The operation in between is an example of the implementation of the separation step of the present invention.

Further, according to the present embodiment, by changing the pattern program of the NC lathe, not only the outer diameter straight screw but also the inner diameter screw and the end face screw including the tapered screw and the multi-threaded screw are created. be able to.

In FANUC, the machining pattern in the threading apparatus and method according to the present invention is written into a macro executor so that the threading method using the NC lathe according to the present invention can be used with a simple program. You may.

The thread cutting operation according to the present invention is performed by NC
Not only the function G32 of the lathe but also other threading functions of the NC lathe may be used.

In the sixth embodiment, the manner of moving the tool 1 is the same as that of the first embodiment. However, by rewriting the pattern program, the same manner as that of the second, third, fourth, and fifth embodiments is obtained. Can also.

[0041]

As is clear from the above, according to the present invention, chips generated by screw cutting can be divided, and the harmful effects such as chip loss and defective work due to generation of long chips are eliminated. , Interrupt the processing,
Alternatively, since it is not necessary to remove cuttings entangled during the processing, the processing time is also reduced. Further, automation of the processing is also facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a moving path of a tool when a conventional thread cutting method using an NC lathe is performed.

FIG. 2 is a schematic diagram showing a moving path of a tool when a thread cutting method using an NC lathe according to a third embodiment of the present invention is performed.

FIG. 3 is a schematic diagram showing a moving path of a tool when a thread cutting method using an NC lathe according to the first and second embodiments of the present invention is performed.

FIG. 4 is a schematic diagram showing a moving path of a tool when a thread cutting method using an NC lathe according to the fourth and fifth embodiments of the present invention is performed.

FIG. 5 is a schematic diagram showing a thread cutting device using an NC lathe according to a sixth embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 tool 2 work 3 chuck 4 tailstock 5 motor 6 spindle 7 position coder 8 control device 9 drive device

Claims (10)

[Claims] 1. A pattern program of an NC lathe,
A section setting step of setting a portion of the work that requires thread cutting into a plurality of sections in the axial direction of the work, and a thread cutting operation from one end in the axial direction of each section to the other end by using a tool of an NC lathe. An NC lathe comprising: an operation step to be performed; and a separation step of interrupting the operation step each time the operation step of each section is completed, moving the tool and separating the tool from the work. Screw cutting method. 2. The thread cutting method using an NC lathe according to claim 1, wherein in the section setting step, a plurality of sections to be set partially overlap each other and are adjacent to each other. 3. A plurality of sections to be set in the section setting step are adjacent to each other without being partially overlapped with each other or spaced from each other.
A thread cutting method using the described NC lathe. 4. The work process and the separation process are alternately and repeatedly performed, and the work process is performed every time the work process in one section is completed until the thread work in all sections is completed. 4. The method according to claim 1, further comprising: starting the work process of the section that has not been completed.
A thread cutting method using any of the NC lathes. 5. The thread cutting method using an NC lathe according to claim 4, wherein the section in which the operation process is started is the section at the tip of the screw to be created. 6. The work process of the section at the tip of the screw to be created is started again after the work process of the section at the end of the screw to be created is completed. A thread cutting method using the NC lathe according to claim 5. 7. The working process and the separating process are alternately and repeatedly performed, and the working process is repeated until the threading work in a predetermined section is completed, and after the threading work in the section is completed. 4. A thread cutting method using an NC lathe according to claim 1, wherein a work process in another section is started. 8. The work process is performed by using a function G32 of an NC lathe.
A thread cutting method using any of the NC lathes. 9. The thread cutting method using an NC lathe according to claim 1, wherein a machining pattern according to a pattern program of the NC lathe is written in a macro executor. 10. A spindle for supporting and rotating a workpiece, a motor for rotating the spindle, a driving device for moving a tool in an axial direction of the workpiece and in a direction perpendicular to the axial direction, and connected to the spindle. The motor and the drive unit are controlled by a signal relating to the rotation state of the main shaft from a position coder, the threading operation is interrupted for each of a plurality of sections set in the axial direction of the work, and the tool is moved to move the tool. A threading device using an NC lathe, comprising a control device for releasing the tool.