JPH03131410A - Method for drilling hole in printed board - Google Patents

Abstract

PURPOSE:To shorten a time for drilling by changing a drilling order through drilling position information so as to shorten the moving distance of a drill corresponding to a computer program, and inputting the changed order to a drill machine with numetrical control. CONSTITUTION:Drilling position information is extracted according to the sorts of drilling holes, e.g. in a system of X coordinates, data having the minimum coordinate value and drilling hole data contained in a coordinate value added a fixed added value to a certain coordinate value are extracted. These data are sorted in the order of X coordinate and Y coordinate, in the sorted data, in distances to the next drilling position in a coordinate axis direction, the longer distances are totaled, if there is data which are not extracted, data having the smallest coordinate value of a system of X coordinates is searched therein, and the abovementioned process is carried out. The process is carried out by changing the fixed added value to be added, NC machining information by the sorts of the holes is made in the machining order according to an added value with which the total value of a moving component becomes the smallest.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a processing method for drilling holes in printed circuit boards, and particularly relates to drilling holes in printed circuit boards that are performed by inputting numerical control information to a drill machine with numerical control. relates to improvements in processing methods.

(Prior Art) Holes have traditionally been drilled in printed circuit boards by inputting numerical control information (NC data) into a numerically controlled drill machine (NC drill machine).

The time it takes to complete drilling a single printed circuit board depends on the number of holes and types of holes included in the numerical control information (NC data) created in advance, and when all holes are completed. varies depending on the distance the drill travels.

Table 1 below shows the types of holes currently being processed, the number of holes, and the distance traveled by the drill.

(Leaving space below) Table-1 In Table-1 above, the travel distance is the sum of the longer X and Y components of the distance between the two machined holes because the drill machine with numerical control moves at the same time in X and Y. I asked.

(Problem to be solved by the invention) By the way, the method for drilling the holes in the double printed circuit board is as follows.
Because the numerically controlled drill machine has a long travel distance, drilling takes a long time and the efficiency of drilling is low.

SUMMARY OF THE INVENTION Therefore, the present invention provides a method for drilling holes in a printed circuit board, which can improve drilling efficiency.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the method for drilling holes in printed circuit boards according to the present invention is performed by inputting numerical control information into a drill machine with numerical control. In the machining method, numerical control information or hole machining position information created by CAD is stored in a computer file for each tool number, and the computer program changes the machining order for drilling so that the distance traveled by the drill is shortened. This is characterized in that the information is input into a numerically controlled drill machine as numerical control information.

(Function) As mentioned above, the method for drilling holes in the printed circuit board of the present invention is as follows:
Hole drilling position information is stored in a computer file by tool number, and the computer program changes the drilling order so that the distance the drill moves is shortened.
This is input as numerical control information into a numerically controlled drill machine to drill holes in the printed circuit board, so the moving distance of the numerically controlled drill machine is short (therefore, the drilling time is short, Light has high processing efficiency.

(Example) An example of a method for drilling a printed circuit board according to the present invention will be described.

First, in order to extract hole machining position information for each type of machined hole, the following processing is performed for each extracted type of machined hole.

1) Select either the X coordinate or the X coordinate as the reference coordinate system for rearranging.

2) Search for data with the smallest coordinate value in the selected reference coordinate system.

3) Extract the machined hole data included in the coordinate values of the reference coordinate system of the searched data and the coordinate values obtained by adding a fixed value to the coordinate values.

4) If the reference coordinate system selected in 1) is the X coordinate, rearrange the extracted machining hole data in the order of the X coordinate and the X coordinate, and in the case of the X coordinate, rearrange the extracted machining hole data in the order of the X coordinate and the X coordinate. However, the immediately preceding 4
) Compare the longer distance in the coordinate axis direction between the last data sorted in the process and the data having the maximum value and the data having the minimum value in coordinates other than the reference coordinate system of the data to be sorted this time, If the distance between the final data and the data with the maximum value is small, if the reference coordinate system is the X coordinate, the order is in the order of the largest X coordinate, then in the order of the smallest X coordinate, and if the reference coordinate system is the X coordinate, in the order of the largest X coordinate. , sort in ascending order of X coordinate.

5) Sum up the longer distance in the coordinate axis direction from the next machining position for the classified data.

6) If there is unextracted data in 4) above, search for data having the smallest coordinate value in the selected reference coordinate system from the unextracted data, and perform the processes 3) to 5) above.

7) Execute the processes 1) to 6) by changing the fixed addition value to be added, and create NC machining information for each hole type based on the machining order based on the addition value that gives the smallest total value of moving components.

In the actual computer program, the movement distance before order change is also subject to selection evaluation, and the fixed addition value and number of additions are limited (for example, 2 at a pitch of 10.16 mm to 2.54 mm).
5.54mm).

When the same type and number of holes as in the conventional example were drilled on a printed circuit board using the method of the above embodiment, the distance traveled by the drill was as shown in the right column of Table 2 below. Obtained.

(Leaving space below) Table 2 Comparing the drilling distance of the conventional example shown in Table ■ above with the drilling distance of the processing method, and the drilling distance of the drilling example of the embodiment shown in Table 2 with the drilling distance of the processing method. It can be seen that while the total distance traveled by the drill in the conventional example was 49.90 m, the total distance traveled by the drill in the example was 34.70 m, which is a reduction of about 30%.

(Effects of the Invention) As can be seen from the above explanation, according to the processing method for drilling holes in printed circuit boards of the present invention, the moving distance of the numerically controlled drill machine can be shortened, so the processing time for drilling holes can be shortened. Drilling has the effect of improving processing efficiency.

Claims (1)

[Claims] 1) In a printed circuit board drilling method performed by inputting numerical control information into a drill machine with numerical control, the numerical control information or hole machining position information created by CAD is stored in a computer file by tool number. A method for drilling holes in a printed circuit board, characterized in that the drilling order is changed by a computer program so that the distance traveled by the drill is shortened, and this is inputted as numerical control information into a numerically controlled drill machine. .