JP2751184B2 - Mounting method of press seating blade - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a mounting seat formed on a press die for mounting a plurality of processing blades, and in particular, cutting the mounting seat using a rotary cutter such as a milling cutter. How to do it.

2. Description of the Related Art When attaching a processing blade such as a cutting blade or a curved blade made of a steel material block to a press die, machining is performed on the press die to form a mounting seat so as to conform to the shape of each processing blade. In particular, when a plurality of processing blades are mounted adjacent to each other, it is necessary to machine the mounting seat of the processing blade so that the side surfaces of each processing blade are in contact with each other without any gap. In such a case, as a method of machining the mounting seat, the boundary wall between the upper mounting seat and the lower mounting seat in the mounting seat adjacent in a step-like manner is attached to the lower processing blade of the upper processing blade. This is a method of forming the recess at a position retracted to the lower side of the processing blade on the upper stage side than the side surface to be contacted (Japanese Patent Application No. 61-21869). According to this method, when the processing blade is attached, the side surface on the side adjacent to the upper processing blade is positioned outside the boundary wall, and the two processing blades are adjacent to each other without any gap. Can be, but NC
In the case of processing, as shown in FIGS. 8 to 11, even when a plurality of mounting seats are adjacent to each other, they are generally processed individually as independent mounting seats.

This general processing method is generally used when two mounting seats 2 and 3 are adjacent to each other and the heights of the seating surfaces 2a and 3a of the mounting seats 2 and 4 are different from each other as in the press die 1. According to the dimensions of the manufacturing drawing of the press die 1, the upper mounting seat 2 (see FIG. 9) is first processed among the mounting seats 2 and 3 in accordance with each processing blade. After machining the bearing surface 2a by controlling the rotating cutter C of the machine tool to draw a locus L ₁ (see FIG. 10), control the same cutter C to draw a locus L ₂ (see FIG. 11). And three sides of the wall
2b, and then the seating surface of the lower mounting seat 3
Processing of 3a and wall surface 3b was performed.

Problems to be Solved by the Invention However, when a plurality of processing blades are mounted adjacent to a press die, it is necessary to mount the processing blades in a state where the side surfaces of adjacent processing blades are in contact with no gap. In the case of processing the mounting seats 2 and 3 individually as in the conventional processing method, a thin plate-like shape is attached to the boundary wall between the adjacent mounting seats 2 and 3 due to processing errors such as tolerance during cutting. There is a problem that a fan-shaped machining residue 5 (a hatched portion in FIG. 12) is generated at the radius of the rotating cutter C at the machining residue 4 and the corner portion of the adjacent side wall. And
If these machining residues 4 and 5 occur, there are inconveniences, such as the inability to fit the machining blade to the mounting seats 2 and 3 and the formation of a gap between the machining blades.
A repair process was needed to cut and remove 4,5.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a press-type machining blade mounting seat machining method capable of preventing machining residue at a boundary portion between two attachment seats for mounting adjacent machining blades. .

Means for Solving the Problems As means for solving the above problems, the present invention provides
When forming a plurality of mounting seats formed in a press die to mount a plurality of processing blades by moving a rotary cutter according to the shape of the mounting seat, the height of the seating surface is determined by an adjacent mounting seat. Of the two mounting seats with different
The machining process of the seat surface of the upper mounting seat is performed by moving the rotating cutter so that the processing range of the rotating cutter is extended by a predetermined amount in the direction of the lower mounting seat. Of these, the cutting is performed by continuously moving a rotary cutter with a single cutting surface using these portions as a single cutting surface at the same height above the seating surface of the upper mounting seat and continuous with each mounting seat. And a process.

According to the above method, when machining the upper side seating surface,
Since the rotary cutter moves and cuts the seating surface so as to extend in the direction of the lower mounting seat, the remaining processing is likely to occur when processing each mounting seat individually using the conventional processing method. Does not occur. Also, the same height portions on the side walls of these mounting seats are machined as a single cutting surface. That is, the rotary cutter continuously moves and cuts the side wall portions of these mounting seats. Therefore, even if the mounting seats are independent from each other, the side wall portion of the same height above the seat surface of the upper mounting seat does not have a discontinuous portion of the cutting area by the rotary cutter, so that the boundary portion between the two mounting seats. No fan-shaped machining residue is generated at the corners.

Embodiment Hereinafter, an embodiment of a method of machining a mounting seat for a press-type machining blade according to the present invention will be described with reference to FIGS.

On the shaping surface 11a of the press die 11, a concave mounting seat 12 and a mounting seat 13 for fitting and mounting two processing blades A and B, such as a curved blade made of a steel block, respectively, are provided with both processing blades A and B.
The mounting seat 12 on which the machining blade A is mounted has a height of a seat surface 12a, and the other mounting seat 12 on which the machining blade B is mounted. The mounting seat 13 is formed to be higher than the seating surface 13a, and vertical side walls 12b, 13b are formed around the two seating surfaces 12a, 13a to form one side surface (the front surface in FIG. 1). It is open and formed in a step shape.

The machining of the two mounting seats 12 and 13 is performed based on NC data, and the NC data is created from machining data obtained by performing computer processing on the design data of the press die 11, and is adjacent to the NC. The machining area of the seat surface 12a of the upper mounting seat 12 of the two mounting seats 12 and 13 having different heights,
Extends a fixed amount α in the direction of the lower mounting seat 13
Create processing data as a '. In addition, lower seat 1
The design data of the bearing surface 13a of No. 3 is used as it is as the processing data (see FIGS. 4 and 5). Also, both mounting seats 12, 13
The wall surfaces 12b and 13b of the upper mounting seat 12 and the wall surface 1b of the lower mounting seat 13 continuous to the same height as the wall surface 12b.
In addition to creating machining data as a series of wall surfaces 12b 'with the upper part of 3b, machining data is created as a wall surface 13b' except for the wall surface 12 'of the wall 13b of the lower mounting seat 13. (See FIG. 6). Then, NC data is created based on the processing data, and the shape is processed by the NC milling machine to form both mounting seats 12 and 13.

Therefore, the seat surface 12a of the upper mounting seat 12 is
After overcutting by a certain amount α in the direction of the lower mounting seat 13, in order to machine the seat surface 13 a of the lower mounting seat 13 with regular dimensions, There is no plate-like processing residue due to processing errors. Further, since the upper portion of the wall surface 13b of the mounting seat 13 is continuously processed as a series of wall surfaces 12b 'that are continuous with the mounting seats 12, the mounting seats 12, 13
When processing is performed separately, there is no fan-shaped processing residue at the corner on the adjacent side, which is left as a processing residue on the wall surface. Therefore, it is possible to reduce the number of places where re-cutting is performed to remove unprocessed portions.

FIG. 7 is a flowchart showing an example of a routine for creating NC data. In this routine, after processing data input based on design data is read, first, in step 1, both processing blades A and B are horizontally moved. It is checked whether or not they are adjacent to each other in the direction. If they are not adjacent to each other, the process proceeds to step 5, where each of the seats 12 and 13 for individually cutting the mounting seats 12 and 13 on which the machining blades A and B are mounted. The trajectory of the cutter is calculated for the surfaces 12a and 13a and the wall surfaces 12b and 13b, and NC data based on the trajectory calculation result is output to give a command to the servo mechanism. If the two processing blades A and B are adjacent to each other in the horizontal direction, the process proceeds to step S2.

In step 2, it is checked whether or not the two processing blades A and B are adjacent to each other in the vertical direction. If not, the process proceeds to step 5; Goes to step 3.

In step 3, based on the results of steps 1 and 2, assuming that both mounting seats 12 and 13 are adjacent to each other in the horizontal and vertical directions, first, the seating surface 12a of the mounting seat 12 and the mounting seat 13 Is extended outward by a fixed amount α, the machining data for the seating surface 12a is changed to the seating surface 12a '(see FIGS. 5 and 6), and the routine proceeds to step 4.

In step 4, each of the wall surfaces 12b, 1
3b is integrated once, and the processing data is changed to a series of wall surfaces 12b 'at the upper part of both walls 12b and 13b which are continuous at the same height, and the remaining lower part of the wall surface 13b is changed to 13b'. Change and go to step 5.

In step 5, the cutter trajectory is calculated for each seat surface 12a ', 13a and each wall surface 12b', 13b ', and the calculation result is output as NC data. The movement of the table and the cutter of the NC milling machine is controlled by the NC data to perform the processing, and the processing is performed so that no processing remains at the boundary portion, and the two mounting seats 12 and 13 are formed.

As described above, the data for processing the mounting seat
By incorporating the fact that the upper seating surface of the adjacent mounting seat is extended to the adjacent side, no processing residue occurs at the boundary between the two mounting seats, so that reworking can be omitted and NC processing time can be reduced. Can be shortened.

In the above embodiment, two mounting seats 12, 13 are provided.
Has been described in the form of steps, but the present invention can be similarly implemented when three or more mounting seats are formed adjacent to different heights on a press die.

As described above, according to the method of the present invention, a plurality of mounting seats formed in a press die for mounting a plurality of processing blades are formed by moving a rotary cutter according to the shape of the mounting seat. In forming, the mounting surface of the upper mounting seat of the two mounting seats having different heights on the adjacent mounting seats is such that the processing range is extended by a predetermined amount in the direction of the lower mounting seat. The rotary cutter is moved and processed, and of the side walls of the adjacent mounting seats, the processing of the portion at the same height above the seating surface of the upper mounting seat and continuous with each mounting seat is performed by these Since the rotating cutter is continuously moved with the part as a single cutting surface, even if there is a processing error, it is possible to perform processing so that there is no residual processing in the adjacent part by one processing, and the processing time is greatly reduced be able to .

[Brief description of the drawings]

1 to 7 show an embodiment of the method of the present invention, wherein FIG. 1 is a perspective view showing a mounting seat portion of a press die, FIG. 2 is a sectional plan view of the mounting seat portion, FIG. 3 is a cross-sectional front view of the mounting seat, FIG. 4 is an explanatory diagram showing a state where the seat surface is expanded, FIG. 5 is an explanatory diagram showing a processed state of the expanded seat surface, and FIG. FIG. 7 is an example of a flow chart for creating NC data from machining data, FIGS. 8 to 12 show a conventional example, and FIG. 8 is an installation of a press die. FIG. 9 is a perspective view showing a mounting seat to be formed first, FIG. 10 is a plan view showing a locus of a cutter when machining a seat surface, and FIG. 11 is machining a wall surface. FIG. 12 is a plan view showing the trajectory of the cutter at that time, and FIG. 12 is a perspective view showing the mounting seat in a state where the unprocessed portion has occurred. 11 …… Press mold, 11a …… Shaping surface, 12,13 …… Mounting seat,
12a, 13a …… Seat surface, 12a ′ …… Extended seat surface, 12b, 13b…
... wall, 12b ', 13b' ... changed wall, A, B ... machining blade.

Claims (1)

(57) [Claims] When a plurality of mounting seats formed in a press die for mounting a plurality of processing blades are formed by moving a rotary cutter in accordance with the shape of the mounting seat, adjacent mounting seats are used. Of the two mounting seats with different heights of the seating surfaces, the rotary cutter is moved so that the machining range of the seating surface of the upper mounting seat is extended by a predetermined amount in the direction of the lower mounting seat. The cutting process to be performed and the processing of the portion of each side wall of the adjacent mounting seat at the same height above the seating surface of the upper mounting seat and continuous with each mounting seat are simply performed. And a cutting step of continuously moving a rotary cutter as one cutting surface.