JPS62292309A - Pocket working method - Google Patents

Abstract

PURPOSE:To shorten pocket working time by drilling continuously holes with a pitch smaller than the radius of a drill in a region surrounded by a controller line to roughly work the region and then working the outline of unworked portion with an outline working tool along the contour line. CONSTITUTION:After the completion of input of pocket shape, hole diameter, hole pitch, drilling tool, working method, rotational speed of spindle. feed speed, etc. are inputted. Next, holes are drilled along an offset path OF1 offset by the radius r of tool inside the counter OL with a pitch p<=r, and then spirally drilles along offset paths OF2, OF3... offset by p inside respectively. Then, requirements for outlet working, feed speed tool used, rotational frequency of spindle, offset direction, etc. are inputted and a processor calculates the respective hole positions Pi to prepare NC data for rough working and sequentially locates the drill with quick feed and thereafter working the holes to a predetermined depth with a predetermained feed speed. Next, the outline working data are prepared by the input data to be sent to the input of a NC unit for working a pocket.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention <Industrial Application Field> The present invention relates to a pocket processing method, and particularly to a pocket processing method for processing a pocket within an area surrounded by an outline.

<Prior Art> A progressive die or a molding die is constructed by laminating a plurality of plates, and each plate is subjected to various processing. For example, as shown in Fig. 5, the escape hole HL for bending (the escape hole for the plate material bent with a bending punch) formed in the plate PL, the hole 60L for inserting the nest, etc. are formed by pocket processing. .

Normally, pocket machining is performed using the outline OL as shown in Figure 7.
Pocket machining T is performed in the area AR surrounded by . It is processed as shown in Figure 6 (see cl).

<Problems to be Solved by the Invention> However, when the area is large and the grooves are deep, high-speed cutting cannot be achieved with conventional pocket machining, and therefore machining requires a considerable amount of time.

From the above, an object of the present invention is to provide a pocket processing method that can shorten the time required for pocket processing.

〈Means for solving problems〉 FIG. 1 is a schematic explanatory diagram of the present invention.

OL is the outline line, AR is the area surrounded by the outline line, To is the drill for drilling, P, (i = 1.2...) is the center of the hole to be drilled (drill positioning point) ).

<Function> A drill T is placed in the area AR (Fig. 1(a)) surrounded by the outer shape i0L. Drill multiple holes in an orderly manner, for example, in the direction of the arrow at a pitch less than or equal to the radius of the drill to rough-machin the area. As a result of this rough machining, the shaded area shown in FIG.

<Embodiment> FIG. 2 is a block diagram of an NG data creation device for creating NC data for pocket machining according to the present invention, and FIG. 3 is a flowchart of creating NC data for pocket machining according to the present invention.

In FIG. 2, 10 is the main body of the device, 11 is a processor,
12 is ROM, 13 is RAM, 14 is keyboard, 15
1 is a graphic display device, 16 is a disk controller, and 17 is a floppy disk.

Hereinafter, a method for creating NC data for pocket machining according to the present invention will be explained with reference to FIGS. 1 to 3.

(1) Under the control of the loading program stored in the ROM 12, the system program for creating NC data stored in the floppy disk 17 is loaded into the RAM 13.

Thereafter, by operating a predetermined key on the keyboard 14, a process selection menu screen is displayed on the CRT of the graphic display device 15. There are various types of machining plates: surface machining, pocket machining, contour machining, and hole machining, so input the number from the menu and select a predetermined machining pan.

Note that if a processing plate other than pocket processing is selected, an interaction screen corresponding to the processing plate is drawn.

(2) If pocket machining is selected, the outline of the pocket (area) is input according to the dialog screen for inputting the machining shape.

In addition, in progressive die or mold die, the outer shape of the hole made by pocket machining is rectangular or circular, so in such a case, on the dialog screen for inputting the machining shape, (a) Is the pocket outer shape rectangular or circular? , (If it is a bl rectangle, the vertical and horizontal length and position,
If it is tc+circular, specify the pocket by inputting the diameter and position, and the depth of the tdl pocket.

(3) Once the input of the pocket shape is completed, the user is asked whether or not to perform rough machining by drilling holes.

If "NO", a normal dialogue screen for pocket processing is displayed.

(4) On the other hand, if “YES”, the hole diameter (drill diameter),
Enter the hole pitch p, drill tool, machining method (linear one-way, linear zigzag, spiral), spindle rotation speed, feed rate, etc.

In addition, Fig. 1 (, 1 is hole machining by straight zigzag,
Figure 4 shows spiral hole machining, with an offset passage OFI offset by a tool radius r inward from the outer diameter OL.
Holes are drilled at a pitch p (≦r) along the offset passage OF2. OF3.
The hole is drilled in a spiral along...

(5) After printing, input processing conditions for contour processing. The machining conditions include feed rate, tools used, spindle rotation speed,
such as an offset direction.

(6) Once the rough machining conditions for the drill and the machining conditions for contour machining are input as described above, the processor
Each big crying MP to create data.

(Calculate Figure 1 (see al).

Note that the region shape is rectangular as shown in FIG.
If the hole pitch is p, the first hole position P1 is the intersection of two straight lines (X, Y,
), the second point P2 becomes (X, +PP y,), and the coordinate values of each hole are found in the same manner. Note that the outermost hole has a radius r t! inward from the outline line OL. Find the hole position so that it lies on the offset line.

(7) Once each hole position is determined, the drill is positioned at each hole position sequentially in rapid traverse, and after the positioning is completed, NC data is created to drill the hole to a predetermined depth at a predetermined feed rate.

(8) Next, if NC data for contour machining is created using the data input in the fifth step, the process of generating NC data for pocket machining is completed.

(9) Thereafter, the NC data is input to the NG device, and the machining center is used to perform pocket machining.

<Effects of the Invention> According to the present invention, holes are continuously drilled in the area according to a predetermined rule to perform rough machining, and after the rough machining, contour machining is performed using a contour tool. Drills can perform rough machining at high speeds, and contour machining can also be performed at high speeds, reducing the time required for pocket machining.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of the present invention; FIG. 2 is a block diagram of an NC data creation device that creates NC data for pocket machining; FIG. 3 is a flowchart for creating NC data for pocket machining according to the present invention; FIG. 4 is an explanatory diagram of a hole machining method for machining a hole in a spiral shape, and FIGS. 5 to 7 are explanatory diagrams of a conventional example. OL...outline, AR...area surrounded by the outline, To...drill for drilling,

Claims (1)

[Claims] In a pocket machining method for pocket machining in an area surrounded by an outline, holes are continuously drilled in the area according to a predetermined rule and rough machining is performed, and a contour machining tool is used after the rough machining. A pocket machining method characterized by contour machining along the outer line.