KR100390859B1 - A Cutting Method Using A Rotation Of Z-Map - Google Patents

Abstract

The present invention relates to a machining method in which cutting can be performed by rotating the jet-map by a predetermined angle in the X-axis or Y-axis direction in a cutting process using a jet-map of a milling machine. . To this end, a first step of cutting the upper surface of the fixed erased according to the jet-map data; A second step of rotating and fixing the cut upper surface of the erased object by a predetermined angle with respect to a horizontal direction; A third step of computing the updated jet-map of the erased rotation based on the jet-map data and the angle; And cutting the upper surface of the erased portion into a predetermined shape by substituting the updated jet-map data into the upper surface portion of the erased portion. Provided is a cutting method using a rotation of a jet-map, comprising: a.

Description

A cutting method using a rotation of z-map

The present invention relates to a machining method of a milling machine, and more particularly, in a cutting process using a jet-map (Z-Map), by rotating the jet-map by a predetermined angle in the direction of the X-axis or Y-axis The present invention relates to a processing method that enables processing.

In general, a CNC (Computer Numerical Control) milling machine is a machine that cuts the erased part. When CAD or CAM data is input, the CNC milling machine processes the erased part properly according to the input shape. One form of such input data is jet-map data.

Jet-map data refers to a format for storing height values in a Z-direction perpendicular to an erased image placed on a horizontal X-Y plane in a space defined by mutually orthogonal X-Y-Z axes. That is, each X-Y grid is paired with the height of the grid as Z value. Therefore, the X-Y plane of the deletion is defined by hundreds to tens of thousands or more of gratings, and the shape of the top surface of the deletion to be processed is defined by the height value Z of each grating. The general form of the jet-map data can be said to be a matrix of the following format.

{X, Y, Z (X, Y)}

Therefore, when such jet-map data is input, the milling machine moves to the (X, Y) point on the plane, and the cutting machine performs cutting to have the height value of Z in the grid.

Such a milling process using a jet-map may be very useful when only one surface of the erased material is to be processed. This is because the jet-map data can be input with the surface to be processed as the upper surface.

However, if it is desired to mill more than two surfaces (for example, top and side surfaces) such as mold core processing or machine parts, jet-map cannot be used conventionally. This is because the coordinates are all changed when one side of the erased part is machined and rotated to two sides. Therefore, there is an inconvenience of generating new jet-map data based on the rotated position and inputting it every time the rotated object is rotated.

Therefore, the present invention has been made to solve the above problems, the first object of the present invention is to automatically rotate a new jet-map in the rotation direction and angle when the fixed to rotate after the first milling process It is to provide a cutting method using the rotation of the jet-map to make the milling process without inputting additional data to generate.

It is a second object of the present invention to provide a cutting method using a rotation of a jet-map such that cutting is performed not only on the upper surface of the erased surface but also on a plurality of side surfaces by using the jet-map.

A third object of the present invention is to provide a cutting method using a rotation of a jet-map which allows cutting to be performed conveniently by calculating a jet-map corresponding to an angle even when rotating and fixing the erased object at an arbitrary angle. To provide.

An object of the present invention as described above, the first step of cutting the upper surface of the fixed erased in accordance with the jet-map data; A second step of rotating and fixing the cut upper surface of the erased object by a predetermined angle with respect to a horizontal direction; A third step of computing the updated jet-map of the erased rotation based on the jet-map data and the angle; And cutting the upper surface of the erased portion into a predetermined shape by substituting the updated jet-map data into the upper surface portion of the erased portion. It is achieved by a cutting method using a rotation of the jet-map characterized in that it comprises a.

In the second step, the horizontal direction is defined by a virtual X-axis and a Y-axis that are orthogonal to each other, and the predetermined angle is preferably a predetermined angle with respect to the X-axis or the Y-axis.

In addition, the angle is most preferably in the range of 1 degree to 90 degrees.

Further, in the third step, when rotating about the X-axis, the updated jet-map of the jet-map,

Where X, Y and Z represent the jet-map, Xn, Yn and Zn represent the update jet-map, and θ can represent the rotation angle.

In the third step, when the rotation is based on the Y axis, the update jet-map of the jet-map is

Where X, Y and Z represent the jet-map, Xn, Yn and Zn represent the update jet-map, and θ can represent the rotation angle.

In addition, it is preferable to further include a fifth step of repeatedly performing the second, third and fourth steps after performing the fourth step.

1 is a schematic diagram schematically showing the shape of the first to be erased for applying a cutting method using a rotation of a jet-map according to the present invention;

FIG. 2 is a schematic diagram illustrating cutting the upper surface of the erased portion shown in FIG. 1 according to a programmed shape; FIG.

FIG. 3 is a schematic view showing a state in which the cut target cut in FIG. 2 is rotated 90 degrees clockwise; FIG.

FIG. 4 is a schematic diagram schematically illustrating cutting the erased material shown in FIG. 3.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments according to the accompanying drawings.

1 is a schematic diagram schematically showing the shape of the first erased to apply the cutting method using the rotation of the jet-map in accordance with the present invention. As illustrated in FIG. 1, an X-Y axis (Y axis is not shown) perpendicular to each other is defined on a horizontal plane, and a vertical direction perpendicular thereto is defined as a Z axis. The first to-be-deleted 10, which has not yet been processed, is set in a milling machine (not shown) and placed in the coordinate direction as shown in FIG. In addition, the first erased 10 may be defined by a plurality of grids 12 parallel to the Z direction.

FIG. 2 is a schematic diagram showing cutting of the upper surface of the first to-be-deleted 10 shown in FIG. 1 according to a programmed shape. As shown in Fig. 2, the cutting tool 1 of the milling machine (not shown) moves in the XYZ direction, respectively, on the basis of the data of the appearance and the jet-map of the first to-be-deleted 10 already programmed. Perform cutting.

The deletion to which such primary cutting is completed is defined as primary deletion 20, the solid line 14 in the grid represents the appearance of the deletion after processing, and the dotted line shows the portion which has been cut off.

3 is a schematic diagram illustrating a state in which the primary to-be-cut 20 cut in FIG. 2 is rotated 90 degrees in a clockwise direction. As shown in FIG. 3, the erased object rotated after the first cutting is defined as the rotated eraser 30. The rotation eraser 30 can rotate at any angle about the X axis or the Y axis, and after rotating, the grid 12 is redefined in a direction parallel to the Z axis.

After rotating and setting the rotation elimination 30, a new jet-map, that is, an update jet-map for the rotation elimination 30 is calculated. Hereinafter, a method of calculating the update jet-map will be described in detail.

First, when the primary to-be-deleted 20 is rotated by θ degree in the X-axis direction, the calculation of the update jet-map is based on the following equation. In other words,

Here, X, Y and Z represent the jet-map of the primary to-be-deleted 20 before rotation, Xn, Yn and Zn represent the update jet-map of the rotation to-be-deleted 30 as shown in FIG. Represents the rotation angle.

For example, if one of the jet-maps (X, Y, Z) of the primary delete target 20 is (10, 20, 15) and rotates 90 degrees about the X axis, the update jet-map is (10 , -15, 20).

In the same manner, when the primary to-be-deleted 20 is rotated by θ degrees in the Y-axis direction, the calculation of the update jet-map is based on the following equation. In other words,

Here, X, Y, and Z represent the jet-map of the primary to-be-deleted 20 before rotation, Xn, Yn and Zn represent the updated jet-map of the rotational to-be-deleted 30 as shown in FIG. Represents the rotation angle.

For example, if one of the jet-maps (X, Y, Z) of the primary delete target 20 is (10, 20, 15) and rotates 45 degrees about the Y axis, the update jet-map is (17.38). , 20, -3.53). The update jet-map calculated in this way is input into the new appearance data of the rotation elimination 30.

FIG. 4 is a schematic diagram schematically illustrating a secondary cutting process of the rotation elimination 30 shown in FIG. 3. As shown in FIG. 4, the milling machine (not shown) can be recognized by substituting the updated jet-map into the new shape of the rotation elimination 30, and then cutting is performed on a predetermined shape. do. In this way, the second to be cut is defined as the second to be erased 40, and a new machining surface is generated on the upper surface 42 of the second to be erased 40.

In the above, the method of reprocessing after the first cutting and rotating the erased once is described. However, if the processing of the other side is required, the above steps may be repeated again to process the other side. According to this method, not only all surfaces of the hexahedron can be cut, but also the rotatable can be rotated at an arbitrary angle. In particular, when simulating the cutting process, the jet-map rotation method according to the present invention can be easily implemented in software, thereby obtaining a particularly effective effect.

According to the machining method using the rotation of the jet-map of the present invention as described above, when the fixed to rotate after the first milling process, the new jet-map automatically generated by the rotation direction and rotation angle to separate The advantage is that milling can be done without data entry.

In addition, the cutting process may be performed using a jet-map on a plurality of side surfaces as well as an upper surface of the erased surface. In addition, even when the to-be-removed object is rotated and fixed at an arbitrary angle, the jet-map corresponding to the angle can be calculated, thereby effectively cutting.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Claims (6)

A first step of cutting the upper surface of the fixed erased according to the jet-map data; The upper surface of the cut to be removed is fixed by rotating a predetermined angle within a range of 1 ° to 90 ° with respect to a horizontal direction, and the horizontal direction is defined by imaginary X and Y axes that are orthogonal to each other. Is a second angle at a predetermined angle with respect to the X axis or the Y axis; A third step of computing the updated jet-map of the erased rotation based on the jet-map data and the angle; And A fourth step of cutting the upper surface of the erased portion into a predetermined shape by substituting the updated jet-map data into the upper surface portion of the erased portion; Including, In the third step, when the rotation is based on the X-axis, the update jet-map of the jet-map, Is calculated by In the third step, when the rotation is based on the Y axis, the update jet-map of the jet-map, Is calculated by Wherein X, Y, Z represent the jet-map, Xn, Yn, Zn represent an updated jet-map, and θ represents a rotation angle. delete delete delete delete The cutting process according to claim 1, further comprising a fifth step of repeatedly performing the second, third and fourth steps after performing the fourth step. Way.