JP2865220B2 - Numerical control information creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerically controlled lathe having two spindles opposed to each other and capable of continuously performing machining on a first spindle and machining on a second spindle. Control information creating apparatus for creating numerical control information for use.

[0002]

2. Description of the Related Art A numerically controlled lathe having two main spindles opposed to each other and having a process combination so that machining on a first spindle side and machining on a second spindle side are continuously performed has been developed. The control information creation device has also been developed with a function of creating a machining process using the first and second spindles at once. FIG. 8 is a block diagram showing an example of a function of a conventional numerical control information creating device for creating numerical control information for a numerically controlled lathe. The data input unit 2 inputs data DI from the data input device 1 and sends data DE such as material shape / part shape to the processing range determining unit 3. The processing range determining unit 3 determines the material shape /
A range DS1 to be machined on the first spindle side and a range DS2 to be machined on the second spindle side are determined based on data DE such as a part shape, and the first spindle side machining step determination unit 5 and the second spindle side machining step are respectively determined. It is sent to the decision unit 6. The first spindle-side machining process determination unit 5 determines a machining range DL1 for each process such as outer diameter rough machining and inner diameter rough machining with respect to the range DS1 to be machined on the first spindle side.
Is determined and sent to the tool-to-be-used determining unit 4. The tool-to-be-used determining unit 4 determines a tool to be used DK1 for processing the process in the processing range DL1 and sends it to the first spindle-side processing step determining unit 5. The first spindle-side machining process determination unit 5 determines each machining process by adjusting an area that can be machined by the same tool into one process based on the tool DK1 used in each process,
Further, after determining the cutting conditions and setting the process data necessary for the processing, the first spindle-side process data DP1 is stored in the first spindle-side process data storage unit 7. On the other hand, the second spindle-side machining process determining unit 6 determines the tool DK2 to be used for machining the process in the machining range DL2 via the tool-use determining unit 4 in the same manner as the first spindle-side machining process determining unit 5, 2 spindle side process data D
P2 is created and stored in the second spindle-side process data storage section 8.

Here, when it is desired to move or copy the first spindle side process data DP1 to the second spindle side, the process data exchange section 9 converts the process data DC1 such as the machining shape / material shape of the corresponding process into the first spindle. Move or copy from the side process data storage 7 to the second spindle side process data storage 8. The same applies to the movement or copying from the second spindle to the first spindle. In this way, when the required machining process is completed, the numerical control information creating unit 10 sends the first spindle side process data DM1 from the first spindle side process data storage unit 7 and the second spindle side process data storage unit 8 to the first spindle side process data DM1. The second spindle-side process data DM2 is extracted to generate numerical control information DCI, and is output as numerical control data DR via a numerical control information output unit 11 to the outside in the form of a paper tape 12, a floppy disk 13, a communication line 14, or the like. .

FIG. 9 is an example showing the movement of the first spindle side process data to the second spindle side in the prior art. FIG.
(A) is an outer diameter rough machining step (rough outer ←) created to be machined on the first spindle side (the spindle on the left side of the lathe). The processing shape is from the processing start point P0 → P1 → P2 → processing end point P3, and the hatched portion is the area of the material processed in the rough outside process. The direction of the arrow in the rough outside process indicates the cutting direction. Here, in the outer diameter / inner diameter processing, the direction of cutting toward the chuck is referred to as “forward direction”, and the tool at that time is referred to as “forward direction cutting tool”. Conversely, the direction away from the chuck side is called "reverse direction", and the tool at that time is called "reverse direction cutting tool". In the end face machining, the direction of cutting toward the central axis (X = 0) is “forward”, and the direction away from the central axis (X
The direction toward +) is called "reverse direction". In forward cutting, a force is applied to press the material against the chuck, and stable processing can be performed. Therefore, it is common to create a processing step so that forward cutting is performed as much as possible.

The rough outside process shown in FIG. 9 (A) is a process in which the outside diameter portion is processed at a time by grasping the inside diameter.
There is a possibility that the chuck will interfere with the machining end point P3. Therefore, this step is moved so as to be processed on the second spindle side (the spindle on the right side of the lathe) (FIG. 9B). With conventional technology, process data (processed shape / material shape, etc.)
Can only be moved toward the second spindle as it is.
Therefore, the direction of the Z-axis on the second spindle side is limited to a coordinate system in which the direction toward the chuck is positive in order to match with the first spindle side. As shown in FIG. 9 (B), the rough cutting process, which was forward cutting on the first spindle side, is inevitably a reverse cutting operation in which cutting is performed from the chuck side when moving to the second spindle side. Since a force is applied in the direction in which the material is separated, stable processing cannot be performed. Therefore, the operator must change the cutting direction of the rough outside ← step moved to the second spindle side to the forward cutting (change from “rough outside ←” to “rough outside →”). However,
The direction of the shape elements (the individual elements that make up the machining shape)
Since it must be the same as the cutting direction, it is necessary to correct the process data so that P3 is newly set as the processing start point and P0 is set as the processing end point.

[0006]

As described above, in the conventional numerical control information generating apparatus for a process coupling machine, the outer diameter machining step / inner diameter machining step on the first spindle is moved or copied to the second spindle. Then, since the process that was forward cutting on the first spindle side is changed to reverse cutting, the operator corrects the process data that has been moved or copied to the desired cutting direction each time. There was a disadvantage that it had to be done. The same applies when moving or copying from the second spindle to the first spindle. The present invention has been made in view of the above points, and an object of the present invention is to move or copy a machining process on one spindle to the other spindle,
It is an object of the present invention to provide a numerical control information creation device that can move or copy regardless of a coordinate system and can arbitrarily specify a cutting direction of a process that can be moved or copied.

[0007]

According to the present invention, there are provided two opposing elements.
The present invention relates to a numerical control information creating apparatus for a lathe having two spindles, and the object of the present invention is to move or copy when a machining process on one spindle is moved or copied to the other spindle. Designation means for arbitrarily designating the cutting direction of the machining step; determining the coordinate system of the original machining step and the coordinate system of the movement or copy destination; Conversion means for converting the coordinate values of the shape elements, the cutting direction of the original processing step and the specified cutting direction are determined, and the order of the shape elements constituting the original processing step and the orientation of each element are determined. This is achieved by providing a means for inverting and exchanging the positions of the processing start point and the processing end point to automatically generate process data after movement or copying.

[0008]

According to the numerical control information creating apparatus of the present invention, it is possible to arbitrarily designate the cutting direction in the process of moving or copying, and it is necessary to make the coordinate system on the first / second spindle side the same. Is eliminated, so that a coordinate system which can be arbitrarily input easily can be selected.

[0009]

FIG. 1 is a block diagram showing an example of a numerical control information generating apparatus according to the present invention in correspondence with FIG. 8, and the same components as those of a conventional numerical control information generating apparatus are denoted by the same reference numerals. Is omitted. The process data DC1 stored in the first spindle-side process data storage unit 7 and the process data DC2 stored in the second spindle-side process data storage unit 8 are read out to the process data exchange unit 9, and the first spindle side It is determined whether or not the coordinate system on the second spindle side is the same as that on the second spindle side. If they are different, the coordinate conversion of the machining shape / material shape in the corresponding process is performed by the coordinate conversion unit 15, and if the cutting direction of the process data is specified to be different at the movement or copy destination, the direction of the shape element row is changed. The reversal is performed by the machining shape regeneration unit 16. The process data DCF in which the coordinate transformation and the processed shape have been regenerated are transferred via the process data exchange unit 9 to the first spindle-side process data storage unit 7 or the second spindle-side process data storage unit 8 to which the process data is copied or copied.
Sent to and stored.

FIG. 2 is a flowchart showing an operation example of the apparatus of the present invention. FIG. 3 shows an example of an outer diameter rough machining step (rough outside ←) created so as to machine on the first spindle side. The operation of the apparatus of the present invention will be described based on this example. In FIG. 3, the rough shape ← the processing shape is the processing start point P0 → P1 → P2 →
It is up to the processing end point P3, which is a step of forward cutting.
By operating this step, rough machining is performed on the illustrated machining range by using a forward cutting tool. This step is moved to the second spindle side.

First, the operator moves the cursor to an arbitrary position in the process name display field on the input screen as shown in FIG. Specify (step S1). In this example, since it is desired to move to the first process of the A tool post, the A in the process chart of FIG.
(A: A tool post, B: B tool post) Place the cursor just below. Next, when [Move] of the function key is pressed, a message indicating that the cutting direction of the process after the movement is designated is displayed, and the input line is displayed as ">MV"(>: prompt, MV: move instruction). Command).
Here, based on an example of the process name display column when the machining process is moved as shown in FIG.
A process to be moved is selected by inputting "1" which is a process number (in this example, rough process ← process) on the main spindle side (step S2). Further, in accordance with the message, a cutting direction (“1” for forward cutting and “2” for reverse cutting) of the process after the movement is designated (step S3). If it is desired to perform forward cutting, "1" is input after the number of the process to be moved and designated as shown in the input line of FIG.

When the input of the necessary data is completed, the command is executed, and the process data exchange unit 9 extracts the process data of the rough process from the first spindle side process data storage unit 7 (step S4), and the second process data. It is determined whether the coordinate system on the spindle side is the same as that on the first spindle side (step S5). In general, the coordinate system on the second spindle side has a case where the positive direction of the Z-axis is set to the side toward the chuck on the second spindle side as shown in FIG. 9 and a side which moves away from the chuck as shown in FIG. 4 or FIG. May be taken. If the first spindle side and the second spindle side have the same coordinate system,
The coordinate values of the processed shape / material shape in the corresponding step may be left as they are. If the first spindle side and the second spindle side have different coordinate systems as shown in FIGS. 4 and 5, the coordinate system conversion unit 15 reverses the sign of the Z coordinate value (step S6). Here, the origin of the coordinates may be set arbitrarily. The first spindle side is the left end of the material, but in FIGS. 4 and 5, it is at the right end of the material. Of course, if the position of the origin moves, it is necessary to take into account the amount of displacement (in the example, the material length), and the coordinate system conversion unit 15 adjusts the amount of displacement. Since the coordinate system here is a coordinate system for creating process data, the operator may use a coordinate system that is easy for the operator to input.

When the coordinate value conversion is completed, the process data exchange unit 9 determines whether or not the post-movement cutting direction is the same as the moving process (step S7), and as shown in FIG. If there is, the process data is stored in the second spindle-side process data storage unit 8 as it is. If the cutting direction on the first spindle side is “← (forward direction)” and the cutting direction on the second spindle side is “← (reverse direction)”, the cutting direction is the same.
(Forward direction) "is a different direction. If the first spindle side is" → (reverse direction) "and the second spindle side is" ← (reverse direction) ", the direction is different and the second spindle side is" → (reverse direction). " (Forward direction) "is the same direction. If the machining process is end face machining, the first and second spindle sides are the same direction if" ↓ (forward direction) "or" ↑ (reverse direction) ". ↓ (forward) and “↑ (reverse)” are different directions.

If the cutting directions are different, the machined shape regenerating section 16 sets the process name of the changed cutting direction (rough outside ← step if rough outside → step), and reverses the direction of the shape element row (individual individual). The start point / end point of the element is exchanged) (step S8).
That is, as shown in FIG. 5, the processing shape is “processing start point P3 → P2 → P1 → processing end point P0”, the start point / end point of the linear element is exchanged, and the start point / end point of the arc element is exchanged and rotated. The processing shape is regenerated by reversing the direction (clockwise or counterclockwise). The process data for which the machining shape has been regenerated is stored in the process data storage unit (in this example, the second spindle-side process data storage unit 8) via the process data exchange unit 9 (step S9), and the coordinate system conversion and The processing shape regeneration processing ends. FIG. 5 shows that the process is moved so as to perform forward cutting on the second spindle side in this manner.

In the process name display column on the second spindle side, if the reverse direction cutting is designated, as shown in FIG.
If the cutting in the forward direction is designated, it is displayed as shown in FIG.
Since the process number is the movement of the process, the process number remains “1” before the movement. When copying a processing step, a step number “3” is given as a new step. In this way,
The process is moved from the first spindle to the second spindle. In the above-described embodiment, the movement of the processing step has been described as an example, but the same applies to the copying of the processing step. The same applies to the movement or copying of a process in which the cutting direction can be arbitrarily specified even if the movement or copying of a process is performed within the same spindle. Further, the outer diameter processing step is described as an example, but the same applies to the inner diameter processing step / end face processing step.

[0016]

As described above, according to the numerical control information generating apparatus of the present invention, when the machining process on one spindle is moved or copied to the other spindle, the cutting direction of the process of the movement or the copy destination is changed. The process data can be arbitrarily specified and the process data is automatically regenerated so that the specified cutting direction is obtained, so the operator corrects the process data such as the shape element row so that the desired cutting direction is obtained after moving or copying. This eliminates the necessity of inputting data, reducing input errors and the amount of operation, and making it possible to easily move or copy the machining process. Further, it is not necessary to make the first / second main spindle side the same coordinate system, and the operator can select a coordinate system which is easy to input arbitrarily.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a numerical control information creation device according to the present invention.

FIG. 2 is a flowchart showing an operation example of the apparatus of the present invention.

FIG. 3 is a diagram showing an example of a general processing step on a first spindle side.

FIG. 4 is a view showing a first example of a machining process when the machining process of FIG. 3 is moved to a second spindle side.

FIG. 5 is a view showing a second example of the processing step when the processing step in FIG. 3 is moved to the second spindle side.

FIG. 6 is a diagram showing an example of a move / copy input screen in the apparatus of the present invention.

FIG. 7 is a diagram showing an example of a process name display column when a processing process is moved in the apparatus of the present invention.

FIG. 8 is a block diagram showing an example of a conventional numerical control information creation device.

FIG. 9 is a diagram showing an example of movement / copy of a processing step in a conventional apparatus.

[Explanation of symbols]

 15 Coordinate system conversion unit 16 Machining shape regeneration unit

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code FI G05B 19/403 P (56) References JP-A-60-246406 (JP, A) JP-A-1-82202 (JP, A) JP-A-4-131909 (JP, A) JP-B-61-48722 (JP, B2) JP-B-62-35123 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23Q 15/00 B23B 3/30 G05B 19/18 G05B 19/403

Claims (1)

(57) [Claims] In a numerical control information generating apparatus for a lathe having two main spindles opposed to each other, when a processing step on one main spindle is moved or copied to the other main spindle, machining performed by moving or copying is performed. Specifying means for arbitrarily specifying the cutting direction of the process, and discriminating the coordinate system of the original processing step and the coordinate system of the movement or copy destination, and adjusting the coordinate system of the movement or copy destination to the original processing step. Conversion means for converting the coordinate values of the shape elements, the cutting direction of the original processing step and the specified cutting direction are determined, and the order of the shape elements constituting the original processing step and the orientation of each element are determined. A numerical control information creating apparatus, comprising: a generating unit that reverses the position of a processing start point and a processing end point to generate a processed shape after movement or copying.