JP5439015B2 - Machining program automatic conversion program - Google Patents

Description

  The present invention relates to a program for automatically incorporating a pilot hole machining program into a machining program in drilling a printed circuit board using a drill.

  The drilling process for interlayer connection and component connection in a multilayer printed circuit board has become smaller year by year, and in recent years, the need for drilling process of 0.3 mmφ or less has increased.

  FIG. 3 is a schematic perspective view of a printed circuit board drilling machine according to the present invention. As shown in the figure, the table 1 of the printed circuit board drilling machine 100 is driven by a motor 3 and a ball screw (not shown), guided by a track 2 and a linear guide device (not shown), and on the bed 4. Can be moved in the X-axis direction. A cross rail 5 is fixed to the bed 4 so as to straddle the table 1. A track 6 is fixed to the front surface of the cross rail 5. The cross slide 7 is driven by a motor 8 and a ball screw 9 and is guided by a track 6 and a linear guide device (not shown), and is movable on the cross rail 5 in the Y-axis direction.

  A linear track 10 is fixed to the front surface of the cross slide 7. A nut (not shown) that is screwed into the ball screw 13 is fixed to the base 11. The ball screw 13 is fixed to the output shaft of the motor 12. The motor 12 is fixed to the cross slide 7. The base 11 is driven by a motor 12 and a ball screw 13 and is guided by a track 10 and a linear guide device (not shown), and is movable along the track 10 along the track 10 in the Z-axis direction. A spindle 14 as tool holding means is fixed to the base 11. A drill 15 as a tool is rotatably held at the tip of the spindle 14. The printed circuit board drilling machine 100 includes an NC device 39 as a control device that controls the printed circuit board drilling machine main body (processing apparatus main body). Then, under the control of the NC device 39, the printed circuit board W as a workpiece is processed by the drill 15.

  FIG. 4 shows the configuration of the machining program used in the NC device 39. The machining program is a number of machining conditions such as a drill diameter, a rotation speed, a cutting speed, a cutting depth, etc. according to the type of tool (drill) (usually referred to as a tool number or a machining number. .) T1, T2, T3,..., Tm,... And one or more hole position coordinates (hereinafter referred to as a hole position coordinate group) C1 corresponding to each machining condition. , C2, C3,..., Cm,.

  FIG. 5 is an explanatory diagram of a correspondence table between processing numbers and processing conditions (hereinafter referred to as processing conditions table). The NC device 39 has a separate machining condition table, in which machining conditions such as the drill diameter, rotation speed, cutting speed, and cutting depth are set and stored for each machining number. For each machining number, each drill corresponds to a number (storage number) assigned to a region (usually including a plurality of drills) of a holder (not shown) that stores the drill. It is attached.

  In order to improve positional accuracy in recent hole drilling, it is well known that drilling should be performed after first drilling, but if such drilling is necessary, the operator must first After setting the machining conditions for pilot hole machining (shown as Ta, Tb, Tc,... In FIG. 5) in the machining condition table, copy and edit the machining program, and perform another machining for pilot hole machining. Create a program or find the target machining number from the machining program, store the corresponding hole position coordinate group, and insert the machining number Ta in the order of pilot hole machining in front of the machining number When the hole position coordinate group that has been stored is inserted and another pilot hole machining is performed, the machining number Tb and the hole position coordinate group are further inserted and converted into a machining program as shown in FIG. Had to do complicated workFIG. 6 shows a machining program in which three stages of pilot hole machining of machining number Ta, machining number Tb, and machining number Tc are inserted into machining number T2 by the latter method.

  In order to eliminate such complications, for example, as in Patent Document 1, the necessity of pilot hole machining and the conditions of pilot hole machining are input to each machining number (tool number) in the machining condition table, and machining is performed twice. In the first processing, drill holes and pilot holes that do not require pilot hole processing in the first processing, record whether or not the pilot hole processing has been performed, and in the second processing only the holes that have been prepared. A method has been proposed.

Japanese Patent No. 4027023 (FIG. 2)

  In recent years, the need for drilling holes has increased in the drilling of printed circuit boards. However, if the operator has changed the machining program as described above, it is cumbersome and time consuming, and setting errors have occurred. There is a problem that it is likely to occur. In addition, even by the method of Patent Document 1 that has improved it, since it is necessary to input the necessity and conditions of pilot hole processing for all of the processing numbers normally set to about 20 to 30, there is not much change in complexity. In addition, there is a problem that stepped drilling cannot be set twice or more.

  Therefore, the purpose of the present application is to create a program conversion work procedure that has been performed manually by a conventional operator, to make it easier for the operator to input the conditions for preparing the pilot hole, and to develop an algorithm suitable for the computer. The purpose is to create a program for automatically incorporating a machining program into a machining program.

In order to achieve the above object, the machining number input to the pilot hole machining condition table by the operator and requiring the pilot hole machining and the conditions of the pilot hole machining are stored (step 1), and the machining program is stored from the storage medium. Read (step 2), read the machining number from the pilot hole machining condition table in order (step 3), determine whether or not the machining number is described, step 10 if not, step below if yes (step 4) The pilot hole machining conditions corresponding to the machining number are read from the pilot hole machining condition table (step 5), the machining number is searched from the machining program, and the position coordinate group of the corresponding machining hole is read (step 6). A prepared hole drilling program is created by using the position coordinate group of the machined hole corresponding to the machining number (step 7). Insert before the work number (step 8), advance the order of the pilot hole machining condition table by one, repeat steps 3 to 8 (step 9), and save the machining program that has been repeated in the storage medium (step 10) It has been found that a machining program automatic conversion program characterized by causing a computer to execute each step of

  According to the present invention, the machining program is automatically converted simply by inputting the machining number that requires drilling and the conditions for drilling into the pilot hole machining condition table. Since it is shortened and the input is simple, an artificial setting error is unlikely to occur.

FIG. 1 is a flowchart showing an algorithm of a machining program automatic conversion program according to the present invention. FIG. 2 is an explanatory diagram of a pilot hole machining condition table according to the present invention. FIG. 3 is a schematic perspective view of the printed circuit board drilling machine. FIG. 4 shows the configuration of the machining program before conversion. FIG. 5 is an explanatory diagram of the processing condition table. FIG. 6 shows the structure of the machining program after conversion.

  FIG. 1 is a flowchart showing an algorithm of one embodiment of the program of the present invention. FIG. 2 is an explanatory diagram of a pilot hole machining condition table according to the program of the present invention.

Each step will be described using step numbers S1 to S10 shown in FIG. Step 1: The input to the pilot hole machining condition table by the operator, a processing number required under drilling, and stored in the internal storage device conditions under drilling (S1). FIG. 2 is an example of a pilot hole machining condition table, and a machining number (examples T2, T5, T7) to be a pilot hole machining target and machining numbers (examples Ta to Tf) as pilot hole machining conditions are input. Here, the machining numbers (examples T2, T5, T7, Ta to Tf) are preset as shown in the machining condition table of FIG. 5 and stored in the internal storage device. An explanation will be given taking the pilot hole machining condition table of FIG. 2 as an example. Regarding the first machining number T2, the machining number Ta is assigned as the pilot hole 1, the machining number Tb is assigned as the pilot hole 2, and the machining number Tc is assigned as the pilot hole 3. In this case, in the hole processing related to the processing number T2, after performing stepwise prepared hole processing in the order of the processing number Ta, the processing number Tb, and the processing number Tc, the drilling is completed under the conditions of the processing number T2. Next, only the machining number Td is input as the pilot hole 1 with respect to the machining number T5. In this case, the drilling is completed under the condition of the machining number T5 only by performing the pilot hole machining with the machining number Td.

  In the following order, Step 2: The machining program is read from the storage medium and stored in the internal storage device (S2). Here, the machining program of FIG. 4 is assumed. Step 3: Processing numbers are sequentially read from the prepared hole processing condition table (S3). In the case of the pilot hole condition table of FIG. 2, the machining number T2 is read. Step 4: If the machining number is blank, the process jumps to Step 10, and if it is not blank, the following steps are performed (S4). Step 5: Read the pilot hole machining conditions corresponding to the machining number from the pilot hole machining condition table (S5). In the case of the pilot hole condition table of FIG. 2, machining conditions Ta to Tc. Step 6: The machining number is searched from the machining program, and the corresponding machining hole position coordinate group is read (S6). In the case of the machining program of FIG. 4, the hole position coordinate group corresponding to the machining number T2 is C2. Step 7: A pilot hole machining program is created using the machining hole position coordinate group corresponding to the machining number (S7). In this case, since the pilot hole machining conditions are Ta to Tc and the hole position coordinate group is C2, the program for the pilot hole machining in FIG. 6 is obtained. Step 8: The prepared pilot hole machining program is inserted before the machining number in the machining program (S8). The inserted machining program is as shown in FIG. Step 9: The order of the prepared hole machining condition table is advanced by 1, and steps 3 to 8 are repeated (S9). In the case of the pilot hole machining condition table of FIG. 2, a program for pilot hole machining is created in the order of machining number T5 and pilot hole machining condition Td, machining number T7 and pilot hole machining conditions Te and Tf, and the machining shown in FIG. Insert into the program. Step 10: The machining program that has been repeated is stored in a storage medium (S10).

  As described above, the operation of this program has been explained in the case where the pilot hole machining conditions are set for each machining number. However, when the pilot hole machining conditions are common to the drill diameter, the drill diameter is not used for each machining number. It may be set with. In this case, all the machining numbers corresponding to the drill diameter are first searched from the machining condition table, converted into machining numbers, and then programmed to perform the above steps.

1 table 4 bed 14 spindle 15 drill W work

Claims (1)

A machining program automatic conversion program for automatically inserting a program for pilot hole machining corresponding to machining conditions into a machining program for a drilling device using a drill,
Step 1: Stores the number of machining conditions (machining number), which is input to the pilot hole machining condition table by the operator and requires pilot hole machining, and the conditions of the pilot hole machining.
Step 2: Read the machining program from the storage medium,
Step 3: Read the machining number from the pilot hole machining condition table in order,
Step 4: Determine the presence or absence of the description of the processing number, if not, step 10, if yes, perform the following steps,
Step 5: Read the pilot hole machining condition corresponding to the machining number from the pilot hole machining condition table. Step 6: Find the machining number from the machining program and read the position coordinate group of the corresponding machining hole.
Step 7: Create a program for pilot hole machining using the position coordinate group of the machining hole corresponding to the machining number,
Step 8: Insert the prepared pilot hole machining program before the machining number in the machining program.
Step 9: Advance the order of the pilot hole machining condition table by 1 and repeat steps 3 to 8.
Step 10: Save the machining program that has been repeated to a storage medium.
A machining program automatic conversion program characterized by causing a computer to execute each step.

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