CN106294980A - A kind of method of auto arrangement silk-screen in PCB - Google Patents

Abstract

The invention belongs to field of electron design automation, a kind of method of auto arrangement silk-screen in PCB.The feature of the method is that the letter and number of silk-screen is regarded as an overall A, and follow-up operation all of to silk-screen is all to realize the auto arrangement of silk-screen in PCB based on overall A.Compared with prior art, the inventive method ensure that quick, the efficient and accuracy that silk-screen arranges, and is effectively improved layout work efficiency and work quality.

Description

A method for automatically arranging silk screen in PCB

technical field

The invention relates to the field of electronic design automation, and specifically provides a method for automatically arranging silk screens in a PCB that can be realized by using an extended Skill interface provided by Allegro software.

Background technique

At present, there are many PCB design software in the electronics industry, and Allegro software, as one of them, has very rich and powerful functions. This software uses a unique data form to store design files, and each design file has a corresponding independent database support. There are two main types of information in a database: physical information and logical information. Various functional operations of the Allegro software are edited and operated on this database. In the same situation, using the extended Skill interface provided by the software, you can also edit the database, so as to realize some functions that the program does not provide, and improve the efficiency of Layout work.

Printed circuit boards are found in almost every electronic device. In addition to fixing various small parts, the main function of the PCB is to provide electrical connections between the various parts above. As electronic devices become more and more complex, more and more parts are required, and the lines and parts on the PCB are becoming more and more dense.

When using Allegro software for PCB design, how to efficiently and quickly perform silk screen arrangement is a technical problem that those skilled in the art want to solve urgently.

Contents of the invention

The technical task of the present invention is to provide a convenient, quick and easy-to-implement method for automatically arranging silk screens in PCBs, aiming at the deficiencies of the above-mentioned prior art. By using the extended Skill interface provided by Allegro software, edit the database to improve the work efficiency of Layout.

Technical task of the present invention is realized in the following manner:

A method for automatically arranging silk screens in a PCB, which is characterized in that the letters and numbers of the silk screens are regarded as a whole A, and all subsequent operations on the silk screens are based on the whole A to realize the automatic arrangement of the silk screens in the PCB.

Write the parameter size of the commonly used fonts for silk screen printing into the Skill program, edit the templates for the silk screen placement forms of the Top and Bottom sides in the program, and stipulate that the silk screen of the Top side should be placed on a certain side of the letter as the reference, from the outside The order from inside to outside is letters + numbers; the placement basis on the Bottom side is the opposite, with letters on the other side as the basis for placement, and the order from inside to outside is numbers + letters.

As a preference, the screen printing on the Top surface can be placed on the basis of letters on the far left, and the order from left to right is letters + numbers; The sequence to the right is number + letter.

Compared with the prior art, the method for automatically arranging silk screens in PCBs of the present invention can realize the automatic arrangement of silk screens in PCBs by extending the Skill interface, and has the following outstanding beneficial effects:

(1) The method of the present invention can be realized by using the extended Skill interface provided by the Allegro software, which is easy to implement and easy to popularize and apply;

(2) Treat the letters and numbers of the silk screen as a whole A, and all subsequent operations on the silk screen are based on the whole A, which can ensure the fast, efficient and accurate silk screen arrangement, and effectively improve the layout work efficiency and work quality.

Description of drawings

Fig. 1 is a flow chart of the method of the present invention.

detailed description

The method for automatically arranging silk screens in the PCB of the present invention will be further described in detail in conjunction with the drawings and embodiments of the description below.

In the method for automatically arranging the silk screen in the PCB of the present invention, the letters and numbers of the silk screen are regarded as a whole A in the program, and all subsequent operations on the silk screen are realized based on the whole A.

The specific implementation method is:

Write the parameter size of the commonly used fonts for silk screen printing into the Skill program, edit the templates for the silk screen placement forms of the Top and Bottom sides in this program, and stipulate that the silk screen on the Top side should be placed on the leftmost side of the letter, starting from the left The order to the right is letter + number. The placement reference of the Bottom surface is the opposite. The letter is placed on the far right as the reference, and the order from left to right is number + letter.

As shown in Figure 1, when using this Skill program, you can directly choose to automatically arrange the top surface or the silk screen of the Bottom. After the selection is complete, the program starts:

①When the silk screen is detected, first change the font of the silk screen to the specified font size.

②Detect the center point of the letters of the silk screen, and select whether the silk screen needs to be rotated according to the previously edited top/bottom surface silk screen placement form template, so as to achieve the placement benchmark of the top/bottom surface edited in the program.

③ In this step, the commands on the Top/Bottom side are different. When the Top surface is selected, the program detects the midpoint of the right boundary of the component Place_Bound; when the Bottom surface is selected, the program detects the midpoint of the left boundary of the component Place_Bound, and the coordinates of the midpoint moving left 1mm in the horizontal direction are the center point of the silk screen letter position The final placement coordinate point of . So far, the automatic arrangement of the silk screen is completed.

The program will automatically repeat the command until all the silk screens on the selected layer are automatically arranged.

The above-mentioned embodiments are only one of the specific implementation modes of the present invention, and the usual changes and replacements performed by those skilled in the art within the scope of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims (3)

1. A method for automatically arranging silk screens in a PCB, characterized in that the letters and numbers of silk screens are considered as a whole A, and all subsequent operations on silk screens are based on the whole A to realize the automatic arrangement of silk screens in the PCB. 2. The method for automatically arranging silk screens in the PCB according to claim 1 is characterized in that the parameter size of the commonly used fonts for silk screens is written in the Skill program, and the respective silk screen placement forms of the Top face and the Bottom face are edited in this program. The template stipulates that the screen printing on the Top side should be based on the letters on one side, and the order from the outside to the inside is letters + numbers; the placement on the Bottom side is the opposite, and the letters are placed on the other side as the basis, from the inside to the inside. The outer order is number + letter. 3. The method for automatically arranging silk screens in PCB according to claim 2, characterized in that the silk screens on the Top surface take the letters on the leftmost as the placement reference, and the order from left to right is letters+numbers; the placement reference on the Bottom surface On the contrary, the letter is placed on the far right as the basis, and the order from left to right is number + letter.