CN107590331A - A kind of offline method for confirming SMT attachment programs - Google Patents

Abstract

The present invention provides a method for offline confirmation of SMT mounting program, which belongs to the technical field of mounting program production. The present invention includes the following steps: 1) Delete unused table headers from the coordinate file, then click column A, select data analysis, Use a fixed width; 2) Process the coordinate files of the two surfaces into a standard form, and then save it as a TXT file for backup; 3) Use CAM350 to import the corresponding Gerber file; 4) Import the coordinates that have been processed in step 2, the method is the same as importing For gerber, the 274x format is fixed, and a new layer will appear after importing the coordinate file, that is, the layer of the coordinate file generally imports a new layer decoded as 10; 5) The component mounting coordinates will be reflected on the Gerber file with a yellow solid circle, Manually confirm whether the yellow dot is in the geometric center of the silk screen of the part to judge whether the mounting coordinates are correct. The level of processing technology has been improved, and the work efficiency of craftsmen has been improved.

Description

A method for off-line confirmation of SMT placement program

technical field

The invention relates to a mounting program making technology, in particular to a method for offline confirmation of an SMT mounting program.

Background technique

Electronic products need to go through many links from design to product realization, among which electronic product processing is an important link. SMT is Surface Mounted Technology (abbreviation for Surface Mounted Technology), which is the most popular technology and process in the electronic assembly industry. . In order to realize the automatic placement of electronic components, craftsmen are required to compile placement programs before processing to achieve the purpose of telling the placement machine how to mount according to the design requirements.

The placement position coordinates of electronic components are obtained during the placement program production process. At present, the placement coordinates are obtained in two ways, one is obtained from the designer or the customer (the design source file has higher confidentiality requirements), The other is to export the design coordinates of the part from the original design file and match it with the Gerber file. The above two solutions have no effective way to confirm whether the coordinates are accurate before the placement program is completed. The coordinates of the parts are found to be incorrect after the program is installed, or such abnormalities can only be discovered during the adjustment process of the placement machine equipment personnel during the PCBA initial part processing process.

If the above abnormalities are not discovered in advance, it will cause the programmer to re-check and compile the placement program, which will double the workload; if it is serious, it will cause the delay of the board processing progress, and even cause the cancellation of the circuit board processing plan, which is extremely costly.

Contents of the invention

In order to solve the above technical problems, the present invention proposes a method for offline confirmation of the SMT placement program. Facing the actual needs of the factory, improve the level of processing technology and improve the work efficiency of craftsmen.

Technical scheme of the present invention is:

A method for off-line confirmation of SMT placement procedures, comprising

1) Coordinate file processing: the coordinate format must be a 7-digit integer, and the prefix number of the largest number must not be zero;

2) Import the coordinate file into the Gerber file: import gerber, and set the 274x format fixedly; after importing the coordinate file, a new layer will appear, that is, the decode of the new layer imported from the layer of the coordinate file is 10;

3) Coordinate Confirmation Confirmation: Through the above processing, the component mounting coordinates will be reflected on the Gerber file as a solid dot, and manually confirming whether the dot is in the geometric center of the part silk screen can determine whether the mounting coordinates are correct.

Specifically include the following steps:

1). Coordinate files (customer output or export using design software) delete unused table headers, then click column A, select data analysis, and use fixed width;

2). Process the coordinate files of the two surfaces into a standard form, and then save it as a TXT file for later use. The coordinate format must be a 7-digit integer, and the prefix number of the largest number must not be zero. For example, if the maximum number is 123456, X and Y must be At the same time *10, so that the largest digit is not zero.

3). Use CAM350 to import the corresponding Gerber file, only need to display the outer frame layer of the part, the general name assembly_bot(top) or comp*_bot(top); the general name of the silk screen layer is ref_a(b) or sst(ssb);

4). Import the coordinates that have been processed in step 2. The method is the same as importing gerber, and the 274x format is fixed. After importing the coordinate file, a new layer will appear, that is, the layer of the coordinate file generally imports a new layer with a decode of 10;

5). Through the above processing, the component mounting coordinates will be reflected on the Gerber file as a yellow solid dot. Manually confirm whether the yellow dot is in the geometric center of the part silk screen to judge whether the mounting coordinates are correct.

The beneficial effects of the present invention are

The present invention starts from the difficulties in the preparation of SMT processing technology, combines the characteristics of various CAD/CAM software, and proposes a method for improving the manufacturability and actual processing efficiency of SMT. The invention effectively reduces the number of on-line failures of the patch program, shortens the product development and realization cycle, and saves new product development costs.

detailed description

The content of the present invention is described in more detail below:

A kind of method of off-line confirming SMT placement program of the present invention, comprises the steps:

a. Coordinate file (customer output or use design software to export) delete unused 1~4 lines shown in the table header, then click column A, select data analysis, and use fixed width;

b. Process the coordinate files of the two surfaces into the following standard form, and then save it as a TXT file for future use;

The coordinate format must be a 7-digit integer, and the prefix number of the largest number must not be zero. For example, if the maximum number is 123456, both X and Y must be *10 at the same time, so that the largest number at the beginning is not zero;

c. Use CAM350 to import the corresponding Gerber file, only need to display the outer frame layer of the part, the general name assembly_bot(top) or comp*_bot(top); the general name of the silk screen layer is ref_a(b) or sst(ssb);

d. Import the coordinates that have been processed in step b. The method is the same as importing gerber, and the 274x format is fixed. Click the setting dialog box that appears here to set according to the drawing;

After importing the coordinate file, a new layer will appear, that is, the layer of the coordinate file generally imports a new layer whose decode is 10, and you can select Tables—Apertures to set the shape and size respectively.

e. Through the above processing, the component mounting coordinates will be reflected on the Gerber file as a yellow solid dot. Manually confirm whether the yellow dot is in the geometric center of the part silk screen to judge whether the mounting coordinates are correct.

Claims (3)

1. A method for off-line confirmation of an SMT placement program, characterized in that, comprising 1) Coordinate file processing: the coordinate format must be a 7-digit integer, and the prefix number of the largest number must not be zero; 2) Import the coordinate file into Gerber file: import gerber, and set the 274x format fixedly; after importing the coordinate file, a new layer will appear, that is, the decode of the new layer imported from the layer of the coordinate file is 10; 3) Coordinate Confirmation Confirmation: Through the above processing, the component mounting coordinates will be reflected on the Gerber file as a solid dot, and manually confirming whether the dot is in the geometric center of the part silk screen can determine whether the mounting coordinates are correct. 2. The method of claim 1, wherein, The specific steps are: 1) Delete unused table headers in the coordinate file, then click column A, select data analysis, and use fixed width; 2) Process the coordinate files of the two surfaces into a standard form, and then save it as a TXT file for future use; 3) Use CAM350 to import the corresponding Gerber file, the outer frame layer of the displayed part is named assembly_bot(top) or comp*_bot(top); the name of the silk screen layer is ref_a(b) or sst(ssb); 4) Import the coordinates that have been processed in step 2, the method is the same as importing gerber; 5) Through the above processing, manually confirm whether the solid dot is in the geometric center of the silk screen of the part to judge whether the mounting coordinates are correct. 3. The method of claim 2, wherein, Coordinate files are output for customers or exported using design software.