JPH033749A - Working method - Google Patents

Abstract

PURPOSE:To eliminate the need for preparing a lot of minute date in the case of a square spot facing by deciding the position by the XY coordinate date of an optional one point of input data and internal processing by a numerical control device based on the square shape data. CONSTITUTION:In case of performing the square spot facing of a longitudinal dimension H, horizontal dimension B and corner R, it is instructed by command code GOX Y B H R P D . GO expresses a square working, X Y the working start position of a square 11 by X, Y coordinates, a center coordi nate O herein, B in the B H the horizontal dimension, H the longitudinal dimension, R a corner R, P the maximum increase part and D a cutter diameter correction amount respectively and the amount subtracting D from H becomes the final peripheral round cutter locus. A control device performs the internal processing, positioning a cutter 12 at a work starting position O by X Y , descending Z axis to a designated spot facing depth, working along the cutter locus 13, calculating the number of peripheral rounds in H direction by the max. increase part P in case of H>B, setting the number of peripheral rounds the same even in B direction and working with B as the reference in case of H<B.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a processing method suitable for processing a rectangular spot in a substrate.

Hereinafter, a case will be described in which the present invention is applied to rectangular counterbore processing of a substrate.

[Conventional technology]

Electronic components such as ICs are sometimes attached to a board, such as a printed circuit board, so that they are partially or completely embedded.In such cases, a numerically controlled board processing machine is used to Conventionally, counterbore processing of the board has been carried out.

In the conventional machining method of this type, command data for all movements of the cutter is created and input into the numerical control device of the machining machine.

[Problems to be Solved by the Invention] For this reason, in the above-mentioned prior art, the creation of processing command data has become complicated. In particular, in the case of rectangular machining, first the x and y axis coordinate data representing the machining start position is created, then linear interpolation data of a predetermined dimension in a predetermined direction is created, then circular interpolation data is created, and then linear interpolation data is created. However, since the process of circular interpolation data → linear interpolation data → circular interpolation data → linear interpolation data was repeated many times to create the machining command data, it took a lot of time and effort to create the machining command data, which also led to creation errors. There are problems in that this phenomenon is easy to occur and reliability is poor.

When a corner radius is not required for a rectangular shape, circular interpolation in the above machining command data is not necessary, but in any case, in the conventional technology, it is necessary to repeat the same data many times, It took a lot of effort and time to create the command data.

An object of the present invention is to provide a machining method in which creation of machining command data is extremely easy.

[Failure to solve the problem]

Target 1 above is based on the machining shape, machining dimensions (vertical, horizontal, depth), machining start position, and tool diameter input as machining instruction data, and the tool within the specified machining area. This is achieved by determining the required number of revolutions, the amount of movement of the tool for each revolution, and the movement trajectory, and then moving the workpiece and tool relative to each other based on the results.

(Function) For example, among the input data for machining a rectangular counterbore, the rectangle to be machined on the board is positioned based on the X and Y axis coordinate data of an arbitrary point on the rectangle.Furthermore, based on the rectangle shape data and each dimension data, The numerical control device processes internally,
This determines the number of revolutions of the tool within the machining area, the amount of tool movement for each revolution, the movement trajectory, etc., and rectangular machining is performed.
In addition, there is no need to create a large amount of data, and processing command data can be created extremely easily.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram for explaining an embodiment of the processing method according to the present invention, and here, a rectangular counterbore processing will be explained.

Vertical dimension H as shown in Figure 1.

When performing rectangular counterbore machining with horizontal dimension B and corner radius R, in the method of the present invention, instructions are given using machining command code (machining command data) GQX△YΔB△H△17△P△D△. Each symbol in this coat will be explained below. Note that ◯ in the above machining command code is a predetermined value that means a square, and △ is an arbitrary command value.

First, Go is a predetermined numerical value, of which ◯ represents the rectangle 11, and represents the GO all-over rectangle processing display code. Y to X represents the machining start position of the rectangle 11 according to the X and Y axis coordinates, here the center coordinate O of the rectangle 11.

Also, B in B△H△ is the horizontal dimension (X direction) of square 11,
11 represents the vertical dimension (X direction) of the rectangle 11.

R△ represents the size of the corner radius. PΔ represents the maximum value of the increment (the amount of cut in the X and Y axis directions) during machining, that is, the maximum increment. This value is to be smaller than the diameter of the cutter 12, and the maximum possible increment PΔ is approximately equal to the cutter diameter.

Further, D△ represents the cutter diameter correction amount. The amount obtained by subtracting I] from B or II becomes the cutter locus of the last round.

When such a machining command code is manually input to the numerical control device, the device performs internal processing and first positions the cutter 12 at the machining start position 0 based on the command code of X△Y△.

Then, the Z-axis is lowered to the specified counterbore depth, and the cutter 12 cuts into the substrate. Note that the counterbore depth designation is instructed by a separate command code, and its explanation will be omitted here.

Thereafter, processing is performed along a cutter locus 13 (the entire locus of the center of the rack 12 is indicated by an arrow in the figure). X at this time,
The depth of cut in the Y-axis direction will be explained.

First, as a first example, machining is performed with the maximum increment P△ of the cutting depth until the final round, and the remaining amount is machined with the cutting depth P'△ of the final round. In the case of a rectangle (H>B), machining is carried out in the same way, and the machining in the B direction is performed on the final trajectory (the same trajectory as the trajectory of the last round) until the machining in the 1] direction is completed. A rectangular shape (H<B) is processed in the same manner.

As a second example, calculate the number of laps at the maximum increment P△,
Set the depth of cut so that the pitch is the same every round.

In either example, in the case of a rectangle (1-1>B), the number of turns in the H direction is calculated using the maximum increment PΔ, and the depth of cut is adjusted so that the number of turns in the H direction is the same in the B direction. Set. In the case of a rectangle (H>B), use B as a reference and process in the same way.

It is arbitrary to select either the first example or the second example.

In the first example above, when the cutter diameter is D and D-1), the depth of cut P' to the final round is expressed as υ.

Further, the number of cutter revolutions N in the second example is -D N-・・・・・・(2) It is expressed as

Note that this embodiment exemplifies the case where D=P, P=2P'N=4.

Now, once the machining has been completed to the machining end position 14, the Z-axis is raised and moved to the next counterbore machining section, and the machining is performed in the same manner.As shown in Fig. 2, one board 21 is , a large number of rectangular counterbore portions 22 are finally obtained.

An example of a numerically controlled board processing machine to which the method of the present invention is applied will be explained based on FIG. As shown in the figure, this type of processing machine has a machine body base including a head 31 and a cross rail 32.
The X and Y tables 34 are composed of
By moving back and forth (movement perpendicular to the drawing plane),
An axis movement is performed. Further, the saddle 36 to which the spindle 35 is attached is moved left and right by the Y-axis motor 37 (moves in the left-right direction in the figure), thereby performing Y-axis movement.
Every time the spindle 35 and saddle 36 are moved up and down by the Z-axis motor 38 (in the vertical direction in the figure), the canter 3
9 X-axis movements are performed.

The cutter positioning and rectangular cutting feed are performed by moving the X and Y axes as described above, and cutting feed to the counterbore depth is performed by moving the X axis.

At this time, the x, y, and z motors 33, 37, and 38 are driven and controlled by being supplied with a signal from the numerical control device 40 to which machining command data is input via the interface cable 41.

Here, an example of the procedure when performing the continuous dust boring process shown in FIG. 2 using the above-mentioned processing machine is shown in the flowchart of FIG. 4.

In the above-described embodiments, the present invention is applied to counterbore machining, but the present invention is not limited to this. For example, the present invention may be applied to punching by setting the X-axis movement to be greater than or equal to the thickness of the substrate. According to this, the chips (slices) are smaller and can be easily discharged compared to punching using a press. Become.

In addition, in rectangular machining, it is optional whether or not to provide a corner radius. Furthermore, it is not limited to rectangular processing.

〔Effect of the invention〕

According to the present invention, there is no need to create data for each movement of a tool, and the creation of machining command data is extremely easy.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of one embodiment of the method of the present invention, FIG. 2 is a plan view showing an example of a substrate with a large number of rectangular counterbore portions processed by the method of the present invention, and FIG. 3 is an explanatory diagram of an embodiment of the method of the present invention. FIG. 4 is a flowchart showing an example of the procedure for performing the continuous boring process shown in FIG. 2 using the same processing machine. 11... Rectangle, 12... Canter, 13... Cutter locus, 14... Machining end position, X... X axis, Y...
... Y axis, 0... Machining start position, H... Rectangle vertical dimension, B... Rectangle horizontal dimension, P... Maximum depth of cut,
D...Cutter diameter, R...Corner radius, P'...
Amount of cut to the final lap.

Claims (1)

[Claims] 1. Based on the machining shape, machining dimensions, machining start position, and tool diameter input as machining instruction data,
It is characterized by determining the required number of revolutions of the tool within a specified machining area, the amount of movement of the tool for each revolution, and the movement trajectory, and then machining by moving the workpiece and tool relative to each other based on the results. processing method.