JPH07261818A - Cam system - Google Patents

Abstract

PURPOSE:To refer to correction information on NC data corrected by an NC machine tool when drawing data with CAM attributes are corrected on a CAM device. CONSTITUTION:The NC data corrected by the NC data correcting means 412 of the NC machine tool and NC data correction information are uploaded to a DNC device 2 and stored in an NC data storage DB 22 and an NC data correction information storage DB 23. When an NC data reference instruction is made on the CAM device 1, the data transfer means 211 of the DNC device 2 retrieves the NC data and NC data correction information in the NC data storage DB 22 and NC data correction information storage DB 23 and uploads them to the CAM device 1. The path simulation means 113 of the CAM device 1 displays the path simulation of the uploaded NC data and an NC data correction information editing and display means 114 edits and displays the uploaded NC data correction information.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a CAM (Compute
r Aided Manufacturing System, especially NC (Numerical Controller)
ol) relates to a CAM system that reflects NC data correction information on an NC machine tool in data.

[0002]

2. Description of the Related Art In a conventional CAM system, a CAD (Computer Aided) is provided in a CAM device.
CAM attributes (tool information, machine information, CAD data) created by the Design system
(Tool selection condition information, etc.) is added to create drawing data with CAM attributes, NC data is generated from the drawing data with CAM attributes, and the NC data is checked by the path simulation function.
The machine was delivered to the NC machine tool with or without an intermediary control device (for example, JP-A-2-98780 and JP-A-63-293607).
No. In the NC machine tool, in actual machining, the NC data delivered from the CAM device is individually modified to carry out the machining. Therefore, in the NC machine tool, similar NC data modification is repeated. It was

In the case of fine modification of NC data, NC
It is possible to improve efficiency by modifying and using the processed NC data on the machine tool, but if a large change in the NC data is required on the NC machine tool, the N
The modification information of the C data is transmitted to the CAM device on the design side, and the C
The AM device corrects the CAM attributed drawing data in consideration of the modification information of the NC data and regenerates the NC data.

[0004]

The above-mentioned conventional CAM
In the system, since the modification information of NC data on the NC machine tool is not systematically fed back to the CAM device, when modifying the CAM attributed drawing data on the CAM device, see the memo etc. to see the CAM. Although the drawing data with attributes was corrected and the NC data was regenerated, the correction information of the NC data corrected by the NC machine tool is not always efficiently collected in the CAM device on the design side.
There is a problem in that NC data is generated with the same correction in the C machine tool, and the CAM system cannot be operated efficiently.

Further, since it was not possible to see the path simulation of the NC data corrected by the NC machine tool when the CAM device corrected the CAM attributed drawing data, it was possible to correct the CAM attributed drawing data with few errors in a short time. There was a problem that it could not be done.

In view of the above points, an object of the present invention is CAM.
By making it possible to refer to the correction information of the NC data corrected by the NC machine tool when correcting the drawing data with CAM attribute on the device, it is possible to reduce the generation of NC data accompanied by the same correction on the NC machine tool as much as possible. To provide a CAM system.

Further, when the CAM device corrects the drawing data with the CAM attribute, the path simulation based on the NC data corrected by the NC machine tool can be referred to so that the accurate N
It is to provide a CAM system capable of efficiently generating C data.

[0008]

The CAM system of the present invention is a CAM that creates NC data based on drawing data.
CA including an apparatus, an NC machine tool that performs machining according to NC data, and a DNC apparatus that transfers the NC data created by the CAM apparatus to a specified NC machine tool
In the M system, the CAM device adds a CAM attribute to a drawing DB that stores drawing data, a CAM attribute-added drawing DB that stores CAM-attributed drawing data, and designs and inputs a machining process to add a CAM attribute to the CAM attribute. Processing step input means for writing attached drawing data to the CAM attributed drawing DB, NC data generation means for generating NC data from the CAM attributed drawing data stored in the CAM attributed drawing DB, and transfer from the DNC device NC data that includes NC data correction information edit / display means for editing and displaying the received NC data correction information and communication means for communicating with the DNC device, wherein the DNC device stores NC data. Storage DB, NC data correction information storage DB for storing NC data correction information, the CAM device and the NC machine tool And NC data storage DB and a data transfer means for transferring NC data and NC data modification information, the NC machine tool is, for storing the NC data between,
An NC data correction information storage DB for storing NC data correction information, and an NC data correction means for correcting the NC data stored in the NC data storage DB and writing the NC data correction information in the NC data correction information storage DB, And a communication means for communicating with the DNC device.

The CAM system of the present invention further comprises a CAM device for creating NC data based on drawing data, and an N
NC machine tool that performs machining according to C data, and NC data specified by the NC data created by the CAM device.
In a CAM system including a DNC device for transferring to a machine tool, the CAM device temporarily stores a drawing DB for storing drawing data, a CAM attributed drawing DB for storing CAM attributed drawing data, and NC data CA for the NC data temporary storage DB and the drawing data in the drawing DB
NC data from the CAM attribute-added drawing data stored in the CAM attribute-added drawing DB and the CAM attribute-added drawing DB for writing the CAM attribute-added drawing data into the CAM attribute-added drawing DB NC that generates
Data generation means, path simulation means for performing path simulation based on the NC data generated by the NC data generation means and the NC data transferred from the DNC device, and the NC data correction transferred from the DNC device. NC that edits and displays information
Data correction information edit / display means and communication means for communicating with the DNC device, wherein the DNC device is N
NC data storage DB for storing C data, NC data correction information storage DB for storing NC data correction information, and data transfer for transferring NC data and NC data correction information between the CAM device and the NC machine tool. Means for storing NC data, wherein the NC machine tool stores NC data.
Data storage DB and NC that stores NC data modification information
N for correcting the data correction information storage DB and NC data stored in the NC data storage DB and writing the NC data correction information in the NC data correction information storage DB N
It includes C data correction means and communication means for communicating with the DNC device.

[0010]

The present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a CAM system according to an embodiment of the present invention. CA of this embodiment
The M system includes a CAM device 1, a DNC device 2 connected to the CAM device 1 via a line, a distribution / conversion device 3 connected to the DNC device 2 via a line, and a line to the distribution / conversion device 3. A main part of the NC machine tool 4 is connected via the NC machine tool 4. In addition, NC machine tool 4 is 1
Only one unit is shown, but multiple units can be connected.

The CAM apparatus 1 includes a CAM unit 11, a drawing database (hereinafter, database is abbreviated as DB) 12 for storing drawing data, a CAM attributed drawing DB 13 for storing CAM attributed drawing data, and NC data. It is configured to include an NC data temporary storage DB 14 for temporarily storing, a display 15, and a keyboard 16.

The CAM unit 11 adds a CAM attribute to the drawing data in the drawing DB 12 to design and input a machining process, and CAM
Processing step input means 111 for writing the attributed drawing data in the CAM attributed drawing DB 13, and the CAM attributed drawing DB 1
3, NC data generation means 112 for generating NC data from the CAM attributed drawing data stored therein, and NC data and DNC generated by the NC data generation means 112.
Path simulation means 113 for performing path simulation based on the NC data transferred from the device 2.
And a communication means 1 for communicating between the NC data modification information edit display means 114 for editing and displaying the NC data modification information transferred from the DNC equipment 2 and the DNC equipment 2.
And 15 are included.

The DNC device 2 comprises a DNC unit 21, an NC data storage DB 22 for storing NC data, and an NC data correction information storage DB 23 for storing NC data correction information.

The DNC section 21 includes a CAM device 1 and an NC.
It is configured to include a data transfer means 211 for transferring NC data and NC data correction information to and from the machine tool 4.

The distribution / conversion device 3 is a device that converts parallel NC data created by the CAM device 1 into serial NC data that can be input by the NC machine tool 4 and distributes it, and vice versa. is there.

The NC machine tool 4 includes an NC controller section 41.
And an NC data storage DB 42 for storing NC data,
It is configured to include an NC data modification information storage DB 43 that stores NC data modification information, a display 44, and a keyboard 45.

The NC controller section 41 includes the DNC device 2
And the communication means 411 for communicating with the NC data and the NC data stored in the NC data storage DB 42 are corrected and N
It comprises an NC data correction means 412 for writing the C data correction information into the NC data correction information storage DB 43.

Referring to FIG. 2, the process at the time of new manufacturing design of the CAM apparatus 1 is the processing step design input step S101.
An end determination step S102, an NC data generation instruction input determination step S103, an NC data generation / storing step S104, an NC data path simulation display step S105, an NC data transfer instruction input determination step S106, and an NC data transmission step. It consists of S107.

Referring to FIG. 3, the processing at the time of diversion manufacturing design of the CAM device 1 includes a step S111 of displaying drawing data with CAM attribute and a step S of judging input of NC data reference instruction.
112, NC data and NC data correction information upload request step S113, NC data and NC
Data correction information receiving step S114, NC data path simulation display step S115, NC data correction information list display step S116, CAM attribute added drawing data partial correction step S117, end determination step S118, and NC data generation instruction input determination Step S119 and NC data generation / storing step S120
And NC data path simulation display step S1
21 and NC data transfer instruction input determination step S122
And an NC data transmission step S123.

Referring to FIG. 4, the process of receiving the NC data of the DNC device 2 is the NC data receiving step S201.
And an NC data storage step S202.

Referring to FIG. 5, the processing when the DN device 2 receives the NC data download (DL) request comprises an NC data download request reception step S211, an NC data search step S212, and an NC data transfer step S213. .

Referring to FIG. 6, the process of receiving the NC data and the NC data modification information of the DNC device 2 is the NC data and NC data modification information receiving step S221.
And NC data and NC data correction information storage step S222.

Referring to FIG. 7, the process when the DN device 2 receives the NC data upload (UL) request is the NC data upload request receiving step S231 and the NC data and NC data correction information searching step S232.
And NC data and NC data correction information transfer step S233.

Referring to FIG. 8, the process of the NC machine tool 4 is the NC data download instruction input determination step S4.
01 and NC data download request transmission step S4
02, NC data reception step S403, NC data correction step S404, and end determination step S405.
NC data check test step S406, actual machining execution step S407, NC data upload instruction input determination step S408, NC data and N
C data correction information transmission step S409.

FIG. 9 shows the NC data correction information storage DB 23.
And N stored in the NC data correction information storage DB 43
It is a figure which illustrates the content of C data correction information. The NC data modification information is composed of a modification number, an NC data name, an NC data number, a drawing name, a major classification, a middle classification, a minor classification, and a modification location (before-correction image and after-correction image).

FIG. 10 is a diagram showing an example of the correction classification items of NC data. The modified classification items include a large classification, a middle classification, and a small classification.

Next, C of this embodiment having the above-mentioned configuration
The operation of the AM system will be described.

In the case of a new manufacturing design, the CAM device 1
The operator inputs the machining process input means 111 of the CAM unit 11.
The drawing data of the drawing DB 12 is displayed on the display 15 and the CAM attributes (definition of processing element, processing path, tool selection, etc.) are added to the drawing data from the keyboard 16 to perform design input of the processing process, which is created. CA
The M attributed drawing data is written in the CAM attributed drawing DB 13 (step S101).

After the design input of the machining process is completed (Yes in step S102), the operator operates the keyboard 16
When an NC data generation instruction is input from (step S10
3, the NC data generating means 112 generates NC data from the drawing data with CAM attributes in the drawing database with CAM attributes 13 and writes it in the NC data temporary storage DB 14 (step S104).

Thereafter, the operator uses the path simulation means 113 to set the N in the NC data temporary storage DB 14 to N.
Based on the C data, the path simulation of the machining tool is displayed on the display 15 so as to be superimposed on the CAM attributed drawing data to confirm the NC data (step S105).

After confirming the NC data, when the operator inputs an NC data transfer instruction from the keyboard 16 (YES in step S106), the communication means 115 transmits the NC data in the NC data temporary storage DB 14 to the DNC device 2 ( Step S107).

In the DNC device 2, the DNC unit 21 is the CA
The NC data transmitted from the M device 1 is received by the data transfer means 211 (step S201) and stored in the NC data storage DB 22 (step S202).

In the NC machine tool 4, an operator downloads NC data (D
L) Input the instruction (Yes in step S401). Then, the NC controller unit 41 transmits an NC data download request to the DNC device 2 through the communication unit 411 (step S402).

In the DNC device 2, the DNC unit 21 is
The download request for the NC data transmitted from the machine tool 4 is received (step S211), and the corresponding NC data is retrieved from the NC data storage DB 22 (step S2).
12) The data transfer means 211 downloads (transfers) to the NC machine tool 4 (step S213).

In the NC machine tool 4, the NC controller unit 4
1 receives the NC data transferred from the DNC device 2 by the communication means 411 and stores it in the NC data storage DB 42 (step S403). In most cases, the operator displays the NC data in the NC data storage DB 42 on the display 44 by the NC data correction means 412 and corrects it from the keyboard 45 (step S404). At this time, the NC data correction means 412 causes the NC data storage D
The NC data of B42 is updated and the NC data correction information is written in the NC data correction information storage DB 43.

The modification of the NC data does not simply modify the NC data at the character level, but the NC data modification means 4
12, the correction contents are registered according to the correction classification item (see FIG. 10) of the NC data. For example, "
When the finishing surface specified by the modified preceding image of 00130 G00 Z10.2 "is lowered by 0.2 mm,
First, the modified classification items are classified into the major classification "tool", the middle classification "route",
The sub-classes are sequentially selected such as "Z". Next, the cursor is moved to the 130th line to be changed, and the correction start position and the correction end position are designated. Next, the corrected image from the correction start position to the correction end position is
00130 G00 Z10.0 "to be corrected. Finally, the completion of correction is instructed.

When the end of the NC data is completed (YES in step S405), the operator of the NC machine tool 4 makes the N
A check test (empty / slow operation) of the NC data in the NC data storage DB 42 is performed by the C controller unit 41 (step S406), and actual machining is performed (step S).
407).

After the actual machining, the operator of the NC machine tool 4 inputs an NC data upload instruction from the keyboard 45 (YES in step S408), and the NC controller section 41 causes the communication means 411 to save the NC data storage DB 42. The NC data and the NC data modification information in the NC data modification information storage DB 43 are uploaded (transferred) to the DNC device 2 (step S409).

In the DNC device 2, the DNC unit 21 is
The NC data and the NC data correction information transferred from the machine tool 4 are received by the data transfer means 211 (step S221), and the NC data is stored in the NC data storage DB 22.
The NC data correction information is stored in the NC data correction information storage DB.
23 respectively (step S222).

In the case of the diversion manufacturing design, in the CAM device 1, the operator inputs the machining process input means 1 of the CAM unit 11.
11, the drawing data with CAM attributes is displayed on the display 15 from the drawing database with CAM attributes 13 (step S111).

CAM attributed drawing data is displayed on display 1
5, the operator of the CAM apparatus 1 inputs an NC data reference instruction (step S112).
Yes), the CAM unit 11 uses the communication means 115
An upload request for NC data and NC data modification information is transmitted to the NC device 2 (step S113).

In the DNC device 2, the DNC unit 21 is the CA
The data transfer means 211 sends an upload request for NC data and NC data correction information transmitted from the M device 1.
Received by (step S231), NC data storage D
The NC data is retrieved from B22, the NC data revision information is retrieved from the NC data revision information storage DB 23 (step S232), and the data transfer means 211 uploads (transfers) it to the CAM device 1 (step S233).

In the CAM device 1, the NC data and the NC data correction information transferred from the DNC device 2 are received by the communication means 115 (step S114), and the path simulation means 113 CAMs the path simulation of the NC data on the display 15. The data is displayed so as to be superimposed on the attributed drawing data (step S115). As described above, in the CAM device 1, the path simulation of the tool can be visually confirmed in the same manner whether the newly created NC data or the NC data referenced from the DNC device 2.

Next, NC data correction information edit display means 1
14 edits the NC data correction information transferred from the DNC device 2 and displays a list of the NC data correction information on the display 15 (step S116).

The operator of the CAM apparatus 1 can confirm the NC data correction location on the NC machine tool 4 by looking at the list of NC data correction information displayed on the display 15. If the correction location is, for example, an NC data generation error or a material part is larger than expected, the machining step input means 111 partially corrects the CAM attributed drawing data (step S117). As a result, it is possible to shorten the NC data correction work time in the NC machine tool 4 and the occupation time of the NC machine tool 4.

After the partial modification of the drawing data with CAM attribute is completed (YES in step S118), the operator
When the NC data generation instruction is input from the keyboard 16 (YES in step S119), the NC data generation means 1
Reference numeral 12 is an NC data temporary storage DB for generating NC data from the CAM attributed drawing data in the CAM attributed drawing DB 13.
14 (step S120).

Thereafter, the operator uses the path simulation means 113 to set the N in the NC data temporary storage DB 14 to N.
Based on the C data, the path simulation of the machining tool is displayed on the display 15 so as to be superimposed on the CAM attributed drawing data and the NC data is confirmed (step S121).

After confirming the NC data, when the operator inputs an NC data transfer instruction from the keyboard 16 (YES in step S122), the communication means 115 transmits the NC data in the NC data temporary storage DB 14 to the DNC device 2 ( Step S123).

As described above, when the NC data is redesigned by using the CAM attributed drawing data for which NC data has already been generated, the CAM device 1 corrects the NC machine tool 4 corrected N data.
It is possible to perform design input of a machining process in which the path simulation of C data and the NC data modification information (NC data before modification image and modification data after NC data) are confirmed.

In the above embodiment, the NC data corrected by the NC machine tool 4 and the NC data correction information are stored in the CAM.
Although it is described that the feedback is given to the device 1, even if only the NC data correction information is fed back,
Since the purpose of facilitating the correction of the CAM attributed drawing data can be achieved easily, a CAM system that feeds back only NC data correction information is also included in the scope of the present invention.

[0052]

As described above, according to the present invention, the CAM device includes a drawing DB, a CAM attributed drawing DB, an NC data temporary storage DB, a machining step input means, an NC data generation means, and an N data generation means.
C data correction information edit display means and communication means are provided,
An NC data storage DB, an NC data correction information storage DB, and a data transfer means are provided in the DNC device, and NC machine tools are
C data storage DB, NC data correction information storage DB, NC
By providing the data correction means and the communication means so that the correction information of the NC data corrected by the NC machine tool is fed back to the CAM device on the design side, the NC machine tool can correct the CAM attributed drawing data by the CAM device. It is possible to refer to the correction information of the corrected NC data, and it is possible to reduce the creation of NC data that involves the same correction in the NC machine tool as much as possible. The present invention has a remarkable effect particularly on the manufacturing design of a new part or a drastic change in specifications, but the range of diversion of the drawing data with CAM attribute is expanded, and the NC machine tool is conventionally used for similar parts or small changes. At N
Even if the correction of C data was more efficient,
There is an advantage that the design and input of the machining process can be performed in a centralized manner in a shorter time.

Further, by providing the CAM device with path simulation means for performing path simulation based on the NC data transferred from the DNC device,
When the CAM device corrects the CAM attributed drawing data, the path simulation based on the NC data corrected by the NC machine tool can be referred to, and there is an effect that the CAM attributed drawing data can be corrected more accurately and efficiently.

[0054]

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a CAM system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a process at the time of new manufacturing design of the CAM device in FIG.

FIG. 3 is a flowchart showing a process at the time of diversion manufacturing design of the CAM device in FIG.

FIG. 4 is a flowchart showing a process of the DNC device in FIG. 1 when receiving NC data.

5 is a flowchart showing a process when the DNC device in FIG. 1 receives an NC data download request.

FIG. 6 is a flowchart showing a process of the DNC device in FIG. 1 when receiving NC data and NC data correction information.

FIG. 7 is a flowchart showing a process of the DNC device in FIG. 1 when receiving an NC data upload request.

FIG. 8 is a flowchart showing a process of the NC machine tool in FIG.

9 is an NC data correction information storage DB and N in FIG.
It is a figure which illustrates the content of NC data correction information stored in C data correction information storage DB.

FIG. 10 is a diagram showing an example of a modification classification item of NC data modified by NC data modification means in FIG. 1;

[Explanation of symbols]

 1 CAM Device 2 DNC Device 3 Distribution / Conversion Device 4 NC Machine Tool 11 CAM Section 12 Drawing DB 13 Drawing DB with CAM Attributes 14 NC Data Temporary Storage DB 15 Display 16 Keyboard 21 DNC Section 22 NC Data Storage DB 23 NC Data Correction Information Storage DB 41 NC controller section 42 NC data storage DB 43 NC data correction information storage DB 44 Display 45 Keyboard 111 Machining process input means 112 NC data generation means 113 Path simulation means 114 NC data correction information edit display means 115 Communication means 211 Data transfer Means 411 Communication means 412 NC data correction means

Claims (4)

[Claims] 1. A CAM device that creates NC data based on drawing data, an NC machine tool that performs machining according to the NC data, and an NC machine tool that specifies the NC data created by the CAM device. In a CAM system including a DNC device for transferring, the CAM device includes a drawing DB that stores drawing data,
Drawing D with CAM attribute that stores drawing data with CAM attribute
B, a processing step input means for designing and inputting a processing step by adding a CAM attribute to the drawing data and writing the CAM attributed drawing data in the CAM attributed drawing DB, and a CAM attribute stored in the CAM attributed drawing DB From attached drawing data N
NC data generating means for generating C data, said DNC
NC data correction information edit / display means for editing and displaying the NC data correction information transferred from the device;
A communication unit that communicates with the C device, wherein the DNC device stores an NC data storage DB that stores NC data, an NC data correction information storage DB that stores NC data correction information, the CAM device, and Data transfer means for transferring NC data and NC data correction information to and from the NC machine tool, wherein the NC machine tool stores an NC data storage DB for storing NC data and an NC data store for storing NC data modification information. Communication between the data correction information storage DB, the NC data correction means for correcting the NC data stored in the NC data storage DB and writing the NC data correction information in the NC data correction information storage DB, and the DNC device A CAM system comprising: 2. A CAM device that creates NC data based on drawing data, an NC machine tool that performs machining according to the NC data, and an NC machine tool that specifies the NC data created by the CAM device. In a CAM system including a DNC device for transferring, the CAM device includes a drawing DB that stores drawing data,
Drawing D with CAM attribute that stores drawing data with CAM attribute
B, an NC data temporary storage DB for temporarily storing NC data, a CAM attribute is added to the drawing data of the drawing DB, a machining process is designed and input, and the CAM attributed drawing data is stored in the CAM attributed drawing DB. Processing step input means for writing, NC data generating means for generating NC data from the CAM attributed drawing data stored in the CAM attributed drawing DB, and NC generated by this NC data generating means.
Path simulation means for performing path simulation based on the data and NC data transferred from the DNC device; and NC data correction information edit display means for editing and displaying the NC data correction information transferred from the DNC device. And a communication unit that communicates with the DNC device, wherein the DNC device stores an NC data storage DB for storing NC data, an NC data correction information storage DB for storing NC data correction information, and the CAM. Data transfer means for transferring NC data and NC data correction information between the apparatus and the NC machine tool, wherein the NC machine tool stores an NC data storage DB storing NC data and NC data correction information. The NC data correction information storage DB and the NC data stored in the NC data storage DB are modified. CAM system which comprises said NC data modification information NC data modification means for writing the NC data correction information storage DB, and communication means for communicating with the DNC device while. 3. The NC data correcting means according to claim 1, wherein the NC data correction means corrects the NC data of the NC machine tool according to the correction classification items classified into a large classification, a middle classification and a small classification. CAM system. 4. The path simulation means is a CA
The CAM system according to claim 2, wherein the drawing data with M attribute and the path simulation by NC data can be displayed in an overlapping manner.