JPS6142006A - Numerical control method - Google Patents

Abstract

PURPOSE:To shorten the programming time by positioning a tool to prescribed points successively on a basis of NC data generated with position coordinate values of individual points and inputting composite point groups, a border line, and data specifying the inside/outside of the border line merely to select automatically points existing in a desired area. CONSTITUTION:In case that positions of point groups Pij existing in an area AS surrounded with a border line BR are subjected to a prescribed processing, several point groups Qij are set virtually on the outside of the area AR, and composite point groups consisting of point groups on the inside and the outside of the area AR are defined and are inputted from a keyboard 104 and are stored in an RAM103. Data obtained by approximation with plural lines and arcs is inputted from the keyboard to specify the border line BR, and data indicating that a desired point group is on the inside or the outside of the border line BR is inputted, and the position coordinate value of the i-th point Ri or the composite point group is obtained and is stored in the RAM103. After it is checked whether the point Ri and all points are desired points or not, the position coordinate value of the selected point group, data which is inputted separately and specifies the positioning motion, and a cycle instruction data which defines a series of motions performed at each positioning end time are used to generate NC data, and this data is stored in the RAM103 to generate an NC tape 107.

Description

[Detailed Description of the Invention] <Industrial Applicability> The present invention relates to a numerical control method, and in particular, it is possible to specify a point group existing inside or outside a region by a simple method. The present invention relates to a numerical control method for creating NC data using position coordinate values of existing points and positioning a tool based on the NC data.

<Prior art> Each part generally has several holes such as screw holes and positioning pin holes, and when these holes are machined by numerical control, it is difficult to process them. ! Define the r target value in some way, then use the defined data to find the position coordinate value of each hole, and use the W* target value at that position to create positioning NC data for linearly positioning the tool. , the tool must be positioned at the hole machining position based on the NC data.

Now, depending on the part (for example, a printed circuit board, a tube plate, etc.), it is required to perform predetermined hole processing at the position of each point that constitutes a two-dimensionally arranged point group on the part according to a certain rule. There may be cases where

FIG. 4 is an explanatory diagram showing an example of such a point group, and FIG.
A) is 7 (point H of Jl) with a pitch of Dh in the horizontal direction.
1~H? and arrange seven points V, -V in the vertical direction with a pitch of Dv, but make points H and V coincide), point l (i-1, 2, . . . ).
7) Vertical direction M! 1ILH,i-112,...
・It shows a point group consisting of the intersection points (lattice points) of 7) and the horizontal straight line LV, i = 1.2, ...) passing through point v i-1, 2, ...7) . Also, Figure 4 (B) shows H
In the direction, 6 points H2 to H1 are arranged at a pitch of , and in the direction of , 4 points V are arranged at a pitch of ,
～■4 has been changed, but point H and point ■,
), and shows a point group consisting of the intersection of a straight line in the V direction passing through each point H, and a straight line in the H direction passing through each point V. Furthermore, FIG. 4(C) shows five-value points B, (i
-1 to 5) are arranged, and four points V (1-1 to 4) are arranged at a pitch of Dv in the V direction, and each point B1
It shows a point group consisting of 20iI intersections between a straight line in the V direction passing through each point V and a circular arc in the circular arc direction passing through each point V.

The entire point group shown in Fig. 4 (A) is the point group H3 to H7, which is
,,H,,Dh, n (-6) (Represented by A-11, and the point group V, ~v7 as Gk-V,, Vfi, D,, n (-6)
(A-2), it is expressed as G,=G,,G, (A-3). However, Dh is in the horizontal direction (H, and H.

D9 is the pitch in the vertical direction (direction connecting vl and V).

n is the number of parallel translations in the horizontal and vertical directions (direction connecting the 11=1 to 7) is defined, and similarly, the starting point V is defined in the vertical direction by Gk.

Point group V obtained by translating 6 times by pitch D from
(i-values 1 to 7) are defined.

Also, the entire point group G shown in FIG. 4(B) is similarly G, the depth G,
It is expressed as G. However, GJ and G consist of point groups H1 to H6, ■, ~V, in the H direction (direction connecting H, and H6) and ■ direction (direction connecting v, and v, , respectively), and G,
=H,,H,,D,,n (=5)Gk=V,,V,
, Dv, n (m4).

Furthermore, all the points shown in FIG. 4(C) are similarly c, -c, .
a.

be expressed as However, G, , Gk are each in the arc direction (
Clockwise direction of known arc C8), point group B in direction (direction connecting V and V), ~B,, v, -v4 Yot+, GJ-C,, CW, B,, Bsp n (x4)G
Express it as k-V,,V,,Dv,n (=4). In addition, CW indicates clockwise direction (CCW direction is counterclockwise),
G shows a point group consisting of a collection of points B, i=1.2.3.4.5) that equally divide the distance between points B and Bs on a known arc C8 into four.

<Problems that the invention is trying to solve> As mentioned above,
When a point cloud is arranged two-dimensionally according to a predetermined rule, these point clouds can be easily defined using conventional methods, and each point constituting the point cloud can be easily defined using these definition data. Calculate position coordinate values, and create NC data using these position coordinate values, data that specifies the positioning movement for the point group that has been input separately, and cycle command data that defines a series of movements to be performed each time positioning is completed. It should be possible to perform hole machining by sequentially positioning the tool at the commanded hole machining position using the NC data.

By the way, as shown in FIG. 5, only a group of points belonging to an area AR separated by a predetermined boundary line BR is defined, and a tool is moved to the position of each point constituting the point group to perform a predetermined process, for example, drilling a hole. There are times when you want to do it.

However, with the conventional method, it was not possible to define the points BY within such a region as one point group.

For this reason, in the past, the position coordinate values of each point PIJ were defined independently, or points with the same characteristics among the line point group PIJ, for example, points P, ~P12, P
21'=P23, "31-23m #P41~P4°, PSl~P%?, P81~P61" 71~72 had to be defined as separate point groups. For this reason,
With conventional methods, it is not possible to easily define a point group within a region, and programming is troublesome.

From the above, it is an object of the present invention to easily define a point group within a region, and to obtain the position coordinate values of each point constituting the point group based on the definition data. It is an object of the present invention to provide a numerical control method in which NC data is created using the position coordinate values and predetermined numerical control is performed using the NC data.

Means for Solving Problems> The numerical control method of the present invention performs a composite point sharpening according to a predetermined rule so that the position coordinate values of each point constituting a composite point group including a desired point group can be calculated. a step of identifying the boundary line of the region; a step of determining the position coordinate values of each point constituting the composite point group and determining whether the chain point exists inside or outside the region; N using the position coordinate values of the desired point group existing on the specified side of the
The method includes a step of creating C data, and is configured to sequentially position the tool at a predetermined point based on the NC data.

When you want to define a point group that exists inside or outside a region (assuming a point group inside the tR region), you can create a composite consisting of a point group within the region and a point group virtually placed outside the region. If the point group is two-dimensionally arranged regularly, the composite point group can be defined as one point group as in the past.

Therefore, when it is necessary to define a point group existing on either the inside or outside of a region, when combined with the point group on the one side, it becomes one point group It! Assume a point group on the other side so that it can be used, and define the composite point δma.

Next, the boundary line of the area is specified by a combination of a plurality of line segments and arcs.

After that, the position coordinate values of each point constituting the composite point group are determined, it is determined whether the chain point exists inside or outside the area, and the position coordinate value of the point existing on the desired side is stored. do.

Once the side on which all points exist is determined, the position coordinate values of the point group existing on the desired side and the data specifying the positioning movement for the point group that has been input separately and the data that specify the positioning movement are performed every time positioning is completed. NC data is created using cycle command data that defines a series of movements. And the NC
Using the data, the tool is sequentially positioned at the commanded points and predetermined processing is executed.

<Embodiment> FIG. 1 is a schematic explanatory diagram of the present invention, FIG. 2 is a block diagram of an NC data creation device implementing the present invention, and FIG. 3 is a flowchart of processing.

If a predetermined process, for example, a hole process, must be performed at the position of the point group p (indicated by a black circle in the figure) existing in the area AR surrounded by the boundary sBR in Fig. 1, then the In the invention, a group of line points is defined as follows.

Assume several virtual point groups (indicated by white circles) Ql outside the area AR. However, the point group P in the area
A point group QIJ is assumed so that a composite point group formed by combining IJ and a point group Q outside the area can be defined as one point group.

In the example of FIG. 1, the point group PS1 to PS? in the H direction is used. sLH in the V direction passing through each of the lines.

The point group Q1 outside the area is determined to constitute a point group consisting of the intersection points (lattice points) of ~LH6, the point group p in the ■ direction, the direct @LV in the H direction passing through 4 to P74, and ~LV. reactor.

After that, the composite point group is defined using the same method as the conventional method (defined by (A-1) to (A-3) above).
. Then, by approximating and specifying the boundary IIBR of the area AR with a straight line and a circular arc, the desired point group will consist of (1) data that defines the composite point group, (2) data that specifies the boundary line of the area, and (3) Uniquely identify one area using the data that specifies the inside/outside of the area. That is, find the position coordinate values of each point that makes up the composite point group from the ill data, and use the boundary line data in (2) to check whether the chain point exists on the side specified in (3). , by selecting points existing on the side specified in (3), a desired point group can be obtained.

In FIG. 2, 101 is a processor, 102 is a ROM
, 103 is a RAM, 104 is a keyboard, 105 is a working memory, 106 is an NCC deck force device, and 107 is an NG tape.

Next, the numerical control method according to the present invention will be explained according to the flowchart of FIG.

lal First, define a composite point cloud made by combining points inside and outside the area, input it from the keyboard 104, and store it in the RAM 10.
Store in 3.

(bl) Next, the boundary line BR (see FIG. 1) is approximated by a plurality of straight lines and circular arcs, and data specifying these straight lines and circular arcs is input from the keyboard to specify the boundary @BR.

(C) After scanning, the area to which the desired point group belongs is the boundary line BR.
Enter whether it is inside or outside.

Note that if the area to which the desired point group belongs is inside the boundary line, the 7lag F stored in the working memory 105 will be 1'', and if it is outside the area, the flag Ft,'' will be ON.

(di Then, the processor changes from 1 to l.

te+ Then, the position coordinate values of the i-th point R1 in the composite point group are determined. In addition, the composite point group P-1Q,, (first
(see figure) includes suffixes (11, 12, 23, etc.)
21.2211.77), new R,, R,, R
They are numbered as ,,...艮.

tfl Once the position coordinate values of the point R1 are determined, the processor 101 checks whether the line point is inside or outside the boundary line BR.

(If it exists inside gl, the processor checks if the flag is n1''.

(If hlF-"1", the point R6 exists on the desired side, and the processor stores the position coordinate value of the point R in the RAM 103.

Note that if Fx'' is ON in step (2), the point R is not present at the desired tsuba, so the same process is not performed, and the check in step (1) is immediately performed.

(i+ On the other hand, if the point R1 exists outside the boundary line in step (fl), the processor sets the flag F to 1.
”.If F=“0”, the dot exists on the desired side, and the position coordinate value of the processor line point R1 is stored in RAMI (1:I). .

Note that if F-'1'' is determined in step (1), point 1 is not located on the desired side, so the check in step (1) is immediately performed without even asking.

fjl After checking whether the point R1 is a desired point, the processor checks whether step (el~) has been performed on all the points constituting the composite point group.

(U) If the discrimination processing for all points is not completed, the processor advances i by 1 step by O + 1 → 1, and step l
Repeat the process after al.

(-On the other hand, if the discrimination process for all points has been completed, the position coordinate values of the point group selected by the above process, the data specifying the positioning movement that has been input separately, and the data that is performed every time positioning is completed) Create NC data using cycle command data that defines a series of movements and store it in the RAM 103.
to be memorized.

Once the NC data is created as described above, the data can be
C data output device 106 and output to NC tape 1.
Create 07.

Then, input the NC tape into an NC device (not shown),
The NC device performs numerical control processing based on input NC data, sequentially positions the tool at predetermined points inside the area or outside the frequency area, and predetermined machining, such as hole machining, is performed at the points.

<Effects of the Invention> As explained above, according to the present invention, the step of specifying the composite point group according to a predetermined rule so as to calculate the position coordinate value of each point in the composite point group including the desired point group. , a step of identifying the boundary line of the frequency region, a step of determining the position coordinate values of each point constituting the composite point group, and determining whether the line point exists inside or outside the region; NC using the position coordinate values of the point group existing on the specified side
Since the configuration includes a step of creating data and sequentially positions the tool at a predetermined point W1 based on the NC data, (1) composite point group, (2) boundary line, (3) boundary line Points existing in a desired area can be selected for automatic fishing by simply inputting data specifying the inside/outside of the area, thereby shortening the programming operation and making the programming operation easier.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the present invention, FIG. 2 is a block diagram of the NG data creation equipment implementing the present invention, FIG. 3 is a flowchart of the processing of the present invention, and FIG. 4 is an explanatory diagram of the conventional method. FIG. 5 is a diagram illustrating the drawbacks of the conventional method. BR...boundary line, AR...area P14...desired point group Q11 existing inside the area...
・Virtual point cloud patent applicant existing outside the domain
Fanuc Co., Ltd. Agent Patent Attorney 1III Senkan Figure 1 Figure 2

Claims (1)

[Claims] a step of identifying the composite point group according to a predetermined rule so as to calculate the position coordinate values of each point constituting the composite point group including the desired point group; a step of identifying a boundary line of a region; a step of identifying the composite point group; a step of determining the position coordinate values of each point constituting the area and determining whether the point exists inside or outside the area; position coordinate values of the desired point group existing on the designated side of the inside or outside; 1. A numerical control method comprising the step of creating NC data using a method, and sequentially positioning a tool at a predetermined point based on the NC data.