WO2016163669A1

WO2016163669A1 - Device and method for setting machine tool coordinates

Info

Publication number: WO2016163669A1
Application number: PCT/KR2016/002927
Authority: WO
Inventors: 배종외
Original assignee: 배종외
Priority date: 2015-04-08
Filing date: 2016-03-23
Publication date: 2016-10-13
Also published as: KR101548299B1

Abstract

A device for setting machine tool coordinates, according to the present invention, comprises: a mounting bed configured so as to enable transferring in left, right, forward, and backward directions, and having a mother material mounted thereon; a camera provided on the upper side of the mounting bed so as to photograph the mother material; a monitor outputting a planar shape of the mother material photographed by the camera so as to additionally output a virtual reference line on an outputted image; a control unit for transferring the mounting bed such that a reference plane of the mother material is consistent with the virtual reference line outputted on the monitor, and then setting a center of the virtual reference line as zero point coordinates if the reference plane of the mother material is consistent with the virtual reference line; and an input unit for inputting shape information of the mother material and an operation signal of each unit. When using the device and a method for setting machine tool coordinates, according to the present invention, reference coordinates of a mother material can be set in a faster and simpler manner, the reference coordinates of the mother material can be set, even without directly touching the mother material, such that damage to the mother material or damage to equipment can be prevented, and the reference coordinates of the mother material can be set regardless of the shape of the mother material.

Description

Machine tool coordinate setting device and method

The present invention relates to an apparatus and method for setting the coordinate reference of the base material seated on the machine tool, and more specifically, to the coordinate reference point of the X-axis and Y-axis of the base material by placing the reference point of the base material on the virtual reference line of the image photographing the base material It relates to a coordinate setting apparatus and method that can be set faster and easier.

In general, a machine tool such as a machining center processes a base material mounted on a bed using a cutting device. In such a machine tool, the bed is moved in the left-right direction (X-axis direction) and the front-rear direction (Y-axis direction), and the tool is moved in the vertical direction (Z-axis direction) so as to three-dimensionally cut the base material seated on the bed. Before this processing, the work of setting the coordinate values of the X-axis and the Y-axis on the program to match the base material.

Typically, when setting these coordinate values, a separate measuring device is mounted on the bed or spindle to set the coordinates for processing the base material. In the conventional measuring device, the stylus touches the bed or spindle and the indicator needle is touched by the stylus. It consists of a dial gauge that is changed to indicate the scale value.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the conventional coordinate processing apparatus for the base material.

1 is a state diagram used in the conventional machining base material coordinate setting device.

As shown in FIG. 1, the conventional machining base material coordinate setting device 40 is a device for setting the coordinate reference of the base material seated on the bed 11 horizontally moved horizontally and horizontally from side to side in the machine tool 10. It is mounted on the lower end of the spindle 12 vertically moved up and down.

The processing base material coordinate setting device 40 is provided with a stylus 50 at the bottom, the stylus 50 is formed in a rod shape of a predetermined length, is configured to determine the position of the base material by contacting the side of the base material. .

However, the conventional workpiece coordinate setting device 40 sets the X axis coordinates by contacting the stylus 50 on the left or right side of the base material, and the Y axis coordinates by contacting the stylus 50 on the front or rear side of the base material. It is configured to set the bar, in order to set the coordinate reference point of the base material, that is, the zero point of the coordinates should be in contact with the base material at least two times the stylus (50). As described above, the stylus 50 may not only take a lot of time to contact the base material more than two times, but also has a disadvantage in that the stylus 50 or the base material may be damaged while the stylus 50 is in contact with the base material.

In addition, the conventional machining base material coordinate setting device 40 can hold a coordinate reference point when the base material is a rectangular parallelepiped, that is, when two adjacent outer surfaces form a right angle, but the outer surface of the base material does not form a right angle. There is a disadvantage in that the coordinate reference point cannot be set.

The present invention has been proposed to solve the above problems, it is possible to set the reference coordinate of the base material without directly touching the base material, can set the reference coordinate of the base material regardless of the shape of the base material, more quickly and easily An object of the present invention is to provide a machine tool coordinate setting apparatus and method capable of setting a reference coordinate.

Machine tool coordinate setting apparatus according to the present invention for achieving the above object is configured to be transported in the left and right and the front and rear direction, the mounting bed is the base material is seated; A camera mounted on an upper side of the seating bed to photograph the base material; A monitor for outputting a planar shape of the base material photographed by the camera and additionally outputting a virtual reference line to the output image; A controller configured to transfer the seating bed so that the reference plane of the base material matches the virtual reference line output to the monitor, and set the center of the virtual reference line to zero coordinates when the reference plane of the base material matches the virtual reference line; And an input unit configured to input shape information of the base material and operation signals of the respective units.

The virtual reference line includes a first axis and a second axis that cross each other, and the crossing angle between the first axis and the second axis is changed according to the shape of the base material.

The point where the first axis and the second axis meet each other when the seating bed is transferred so that two edges of the base material coincide with the first axis and the second axis is set to zero coordinates.

The virtual reference line is formed in a circle or ellipse shape, the size and shape is changed according to the shape of the base material.

After irradiating a laser to the upper surface of the seating bed and the upper surface of the base material, by measuring the time the laser is reflected back, further comprising a laser measuring unit for measuring the height of the base material.

A first step of seating the base material on the seating bed that can be transferred in the left and right and front and rear directions; A second step of photographing the plane of the base material with a camera located above the seating bed; A third step of outputting a plane of the base material photographed by the virtual reference line and the camera; A fourth step of transferring the seating bed such that a base material base line is aligned with the virtual base line; And a fifth step of setting the center of the virtual reference line to zero coordinates.

The virtual reference line includes a first axis and a second axis that cross each other, and the third step further includes changing a crossing angle between the first axis and the second axis according to the shape of the base material.

The virtual reference line may be formed in a circle or ellipse shape, and the third step may further include changing the size and shape of the virtual reference line according to the shape of the base material.

The second step further includes the step of measuring the height of the base material by irradiating the laser to the upper surface of the seating bed and the upper surface of the base material and measuring the time that the laser is reflected back.

In the fifth step, a point at which the center of the virtual reference line is located among the upper surfaces of the base material is set to three-dimensional zero coordinates.

Using the machine tool coordinate setting device and method according to the present invention, it is possible to quickly and easily set the reference coordinates of the base material, and to set the reference coordinates of the base material without directly touching the base material damage to the base material damage or equipment damage It can be prevented, there is an advantage that can set the reference coordinate of the base material regardless of the shape of the base material.

2 is a schematic diagram of a machine tool coordinate setting device according to the present invention.

3 is a flow chart of a machine tool coordinate setting method according to the present invention.

4 and 5 sequentially illustrate the process of setting the reference coordinate of the base material using the machine tool coordinate setting apparatus according to the present invention.

6 to 8 sequentially show a second embodiment of the process of setting the reference coordinate of the base material using the machine tool coordinate setting apparatus according to the present invention.

9 to 11 sequentially show a third embodiment of the process of setting the reference coordinate of the base material using the machine tool coordinate setting apparatus according to the present invention.

Hereinafter, an embodiment of a machine tool coordinate setting apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic diagram of a machine tool coordinate setting apparatus according to the present invention, Figure 3 is a flow chart of the machine tool coordinate setting method according to the present invention, Figures 4 and 5 using the machine tool coordinate setting apparatus according to the present invention The process of setting the reference coordinate of the base material is shown in sequence.

The machine tool coordinate setting device according to the present invention sets zero coordinates of the base material to be processed by a machine tool such as a machining center (hereinafter, abbreviated as 'base material'), that is, a coordinate point in which both X-axis coordinates and Y-axis coordinates are zero. Thus, as a device for processing the base material more precisely, to calculate the position of the base material by photographing the base material using a vision system, instead of calculating the position of the base material by directly touching the outer surface of the base material. The biggest feature is that it is composed. At this time, the machine tool coordinate setting apparatus according to the present invention by outputting a separate virtual reference line at the same time with the photographed shape of the base material, it is configured to set the zero coordinates when the outer end of the base material to match the virtual reference line There is a characteristic.

That is, the machine tool coordinate setting device according to the present invention is configured to be transportable in left and right and front and rear directions, and is mounted on the seating bed 100 on which the base material 1 is seated, and mounted on an upper side of the seating bed 100. (1) a monitor for outputting a planar shape of the camera 200 and the base material 1 photographed by the camera 200, but additionally outputs a virtual reference line 320 to the output image 310 ( 300 and the transfer bed 100 is transferred so that the reference plane of the base material 1 matches the virtual reference line 320 output to the monitor 300, and then the reference plane of the base material 1 is the virtual reference line ( If matched to 320, the control unit 400 for setting the center of the virtual reference line 320 to zero coordinates, and the input unit 500 for inputting the shape information of the base material (1) and the operation signal of each part. At this time, the seating bed 100 is configured to be horizontally moved on the X-axis and the Y-axis by a separate driving device (not shown) by the distance input through the input unit 500, as described above. Since the seating bed 100 which is horizontally moved in the X-axis and the Y-axis according to the input value is a component already commercialized in the conventional machine tool, a detailed description thereof will be omitted.

When the reference coordinate system of the base material 1 is to be set using the machine tool coordinate setting device configured as described above, after the base material 1 is seated on the seating bed 100 that can be transferred in the left and right directions, S10. ), Photographing the plane of the base material 1 with the camera 200 positioned on the seating bed 100 (S20), the base material (1) photographed by the virtual reference line 320 and the camera 200 ) Is output to the monitor 300 (S30).

As shown in FIG. 4, when the virtual reference line 320 and the base material 1 plane shapes are output to the monitor 300, as shown in FIG. 5, a line that is a reference among the outer surfaces of the base material 1, that is, the base material (1) by transferring the seating bed 100 so that the reference line coincides with the virtual reference line 320 (S40), that is, the center of the virtual reference line 320, that is, the first axis 322 and the second axis 324 An intersection point is set to a zero coordinate at which the X-axis coordinate value and the Y-axis coordinate value are 0 (S50). When the zero coordinate is set in this way, since the cutting position and the cutting distance of the base material 1 can be precisely controlled based on the zero coordinate, the base material 1 can be processed more precisely.

As mentioned above, using the machine tool coordinate setting device according to the present invention, since the zero coordinate of the base material 1 can be set without directly contacting the separate stylus with the base material 1, damage to the stylus or the base material 1 ) Has the advantage of preventing damage. In addition, in the case of using a separate stylus, the maintenance cost is relatively high because the stylus must be replaced periodically, but the machine tool coordinate setting device according to the present invention has an advantage that the maintenance cost is significantly reduced because there are no parts to be replaced separately.

In addition, in order to set the zero coordinate by touching the base material 1 as in the related art, by touching the left or right side (right side in the present embodiment) of the base material 1 to set the point where the X-axis coordinate value is 0 , Touch the front or rear (back in this embodiment) of the base material 1 to set the point of the Y-axis coordinate value is zero. That is, since it takes two steps to set the zero coordinate with the X-axis coordinate value and the Y-axis coordinate value to 0, it takes much time to set the zero coordinate, but it takes a vision system to photograph the base material 1 as in the present invention. In this case, since zero coordinates can be set in one step by placing the reference vertex of the base material 1 at the point where the first axis 322 and the second axis 324 intersect, the time required for setting the zero coordinates. The advantage is that it can save money.

On the other hand, in the case of using the method of contacting the stylus with the base material 1, if the stylus is excessively compressed to the base material 1, the stylus may be damaged, and if the stylus is not completely in contact with the base material 1, the zero coordinate setting is performed. Since an error may occur, the stylus should be brought into contact with the base material 1 with an appropriate magnitude of force. As such, there is a disadvantage in that a high degree of skill of the operator is required to properly maintain the contact pressure between the stylus and the base material 1. However, in the case of setting the zero coordinate of the base material 1 by the method according to the present invention, there is an advantage that even a low skilled worker can set the zero coordinate accurately because no additional skill is required.

At this time, in order for the reference vertex of the base material 1 to be located at the point where the first axis 322 and the second axis 324 intersect, the seating bed 100 should be moved a proper distance in the X-axis and Y-axis directions. The movement of the seating bed 100 may be implemented through a process in which a worker manipulates a jog shuttle provided in the input unit 500 while watching the image 310 on the monitor 300. The jog shuttle moves the seating bed 100 to the X-axis and the Y-axis to position the reference vertex of the base material 1 at the point where the first axis 322 and the second axis 324 intersect. Since the work is not high, even a skilled worker can set the zero coordinate correctly.

In addition, the operation of positioning the reference vertex of the base material 1 at the point where the first axis 322 and the second axis 324 intersect may be automatically implemented. For example, the reference bed of the base material 1 may be configured to automatically move the seating bed 100 in the X-axis and Y-axis directions using a tracking system for finding the intersection of the virtual reference line 320. Such a tracking system is implemented in various ways in the field of tracking the movement of the vehicle or the track of the missile, so a detailed description thereof will be omitted.

On the other hand, the machine tool coordinate setting device according to the present invention, the laser measurement capable of measuring the height of the base material 1 so that the zero point to the height of the base material 1, that is, the point where the Z-axis coordinate value is 0 can be set. Unit 600 may be further provided. The laser measuring unit 600 is a time difference when the laser is reflected back when the laser is irradiated on the upper surface of the seating bed 100, and a time difference when the laser is reflected back when the laser is irradiated on the upper surface of the base material (1) It is configured to calculate the height of the base material through.

As such, when the laser measuring unit 600 is additionally provided, the upper surface of the base material 1 may be set to a point at which the Z-axis coordinate value is 0. Thus, the center of the virtual reference line 320 is positioned among the upper surfaces of the base material 1. This point can be set as a three-dimensional zero coordinate.

6 to 8 sequentially show a second embodiment of the process of setting the reference coordinate of the base material 1 using the machine tool coordinate setting device according to the present invention.

4 and 5, since the base material 1 reference line is bent at a right angle, the process of placing the vertices of the base material 1 reference line at the intersection of the first axis 322 and the second axis 324. It is possible to set the zero coordinate accurately.

However, as shown in FIG. 6, when the base material 1 baseline is arranged at an acute angle and the vertex portion is rounded, as shown in FIGS. 4 and 5, the first axis 322 and the second axis 324 are separated. If they are arranged at right angles, the intersection point of the base material (1) baseline cannot be accurately found.

Therefore, when setting the zero coordinate of the base material 1 using the machine tool coordinate setting device according to the present invention, before the virtual base line 320 coincides with the base material (1) reference line according to the shape of the base material (1) A process of changing the crossing angle between the first axis 322 and the second axis 324 may be added.

For example, as shown in FIG. 6, when the base material 1 reference lines are arranged at an acute angle, the first axis 322 and the second axis 324 are aligned with two neighboring base material 1 reference lines, respectively. As shown in FIG. 7, after changing the crossing angle between the first axis 322 and the second axis 324, as shown in FIG. 8, the base material 1 reference line is defined as the first axis 322 and the second axis. 324, respectively.

As such, when the base material 1 reference line coincides with the first axis 322 and the second axis 324, the intersection point between the first axis 322 and the second axis 324 is a virtual vertex of the base material 1 reference line. It is possible to precisely process the base material 1 by setting the virtual vertices of the base material 1 reference line to zero coordinates.

At this time, in the present embodiment, only two neighboring base material (1) the reference line is arranged at an acute angle, but even when the base material (1) the reference line is arranged at an obtuse angle is made according to the direction of the base material (1) reference line By changing the angle of intersection of the first axis 322 and the second axis 324, it is possible to accurately find the virtual vertex of the base material (1) reference line.

In addition, even when the base material (1) reference line is arranged at a right angle, if the base material (1) reference line is arranged to be inclined at an angle to the X axis and the Y axis, the base material as a virtual reference line 320 of the cross shape shown in Figs. (1) The virtual vertices of the baseline cannot be found accurately. In such a case, the first axis 322 and the second axis 324 are rotated to be aligned with the base material 1 reference line, and then the base material 1 reference line is aligned with the first axis 322 and the second axis ( 324), it is possible to accurately find the virtual vertex of the base material (1) baseline.

8 to 10 sequentially show a third embodiment of the process of setting the reference coordinate of the base material 1 using the machine tool coordinate setting device according to the present invention.

When the planar shape of the base material 1 is formed in a circular or oval shape, when the virtual reference line 320 forms a cross shape, the crossing angle between the first axis 322 and the second axis 324 of the virtual reference line 320 is changed. Even if it is, even if the base material (1) baseline can not match the virtual reference line (320). Therefore, the virtual reference line 320 output on the monitor 300 may be formed in a circular or elliptical shape.

For example, when the planar shape of the base material 1 is circular, as shown in FIG. 9, the virtual reference line 320 may also be configured to be circularly output. When the virtual reference line 320 is output in a circular manner as described above, the operator enlarges the size of the virtual reference line 320 according to the diameter of the base material 1 as shown in FIG. 10, and then the base material as shown in FIG. 11. By aligning the edge of (1) with the virtual reference line 320, it is possible to set the zero coordinate to the center point of the base material (1).

On the other hand, the center point of the circular base material (1) was not exactly found by the method of touching the base material (1) with a stylus as in the prior art, the virtual reference line 320 is used when using the machine tool coordinate setting apparatus according to the present invention By outputting in a circular shape, the center point of the circular base material 1 can be found accurately, and by setting the center point of the base material 1 to zero coordinates, the circular base material 1 can be processed more easily and precisely.

Meanwhile, in the present embodiment, only the case where the planar shape of the base material 1 is illustrated is illustrated, but the center of the base material 1 can be accurately found even when the planar shape of the base material 1 is elliptical. That is, the virtual reference line 320 is output in an elliptical shape, the long axis length and the short length of the base material 1 are input to the input unit 500, and the virtual reference line 320 is of the same size and shape as the base material 1. By changing, the outer end of the base material 1 can be exactly matched to the virtual reference line 320. As such, when the outer end of the base material 1 and the virtual reference line 320 exactly match, the center of the virtual reference line 320 becomes the center of the base material 1, so that the center of the base material 1 can be set to zero coordinates. do. As mentioned above, since the technology of forming the same line as the plane shape of the base material 1 by inputting the planar shape value of the base material 1 is already commercially available in various fields, detailed description thereof will be omitted.

On the other hand, after the processing of the base material 1 is completed, by moving the base material 1 so that the center of the virtual reference line 320 is located at each vertex of the base material 1, the X-axis standard and Y-axis standard of the base material 1 Can be calculated at one time. Thus, even when calculating the X-axis standard and the Y-axis standard of the base material (1), the standard of the base material (1) can be accurately calculated only by the operation of matching the vertices of the virtual reference line 320 and the base material (1). 1) There is an advantage that the measurement work becomes easy. In addition, the Z-axis specification of the base material 1 can also be calculated by measuring the height of each part of the base material 1 using the laser measuring unit 600.

As described above, the coordinate setting device according to the present invention can not only set the zero coordinate of the base material 1, but also measure the size of each direction of the finished base material 1, which has the advantage of excellent usability. .

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to a specific Example and should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

Claims

A seating bed 100 configured to be transportable in left and right and front and rear directions, in which the base material 1 is seated;

A camera 200 mounted on an upper side of the seating bed 100 to photograph the base material 1;

A monitor 300 for outputting a planar shape of the base material 1 photographed by the camera 200 but additionally outputting a virtual reference line 320 to the output image 310;

After transporting the seating bed 100 such that the reference plane of the base material 1 matches the virtual reference line 320 output to the monitor 300, the reference plane of the base material 1 is placed on the virtual reference line 320. A control unit 400 for setting a center of the virtual reference line 320 to zero coordinates if they match;

An input unit 500 for inputting shape information of the base material 1 and operation signals of the respective units;

Machine tool coordinate setting apparatus comprising a.
The method according to claim 1,

The virtual reference line 320 is composed of a first axis 322 and a second axis 324 intersecting with each other, the first axis 322 and the second axis 324 according to the shape of the base material (1). The intersection angle between

When the seating bed 100 is transported such that two edges of the base material 1 coincide with the first axis 322 and the second axis 324, the first axis 322 and the second axis 324. The machine tool coordinate setting device, characterized in that the point where the) meet with each other is set to the zero coordinate.
The method according to claim 1,

The virtual reference line 320 is formed in a circle or ellipse shape, the machine tool coordinate setting device, characterized in that the size and shape is changed according to the shape of the base material (1).
The method according to claim 1,

And a laser measuring unit measuring the height of the base material by measuring a time when the laser is reflected and returned to the top surface of the seating bed and the top surface of the base material. Device.
A first step of seating the base material (1) on the seating bed 100 that can be transported in the left and right and front and rear directions;

A second step of photographing the plane of the base material (1) with a camera (200) located above the seating bed (100);

A third step of outputting a plane of the base material 1 photographed by the virtual reference line 320 and the camera 200;

A fourth step of transferring the seating bed 100 such that a base material (1) reference line is aligned with the virtual reference line (320);

A fifth step of setting a center of the virtual reference line 320 to zero coordinates;

Machine tool coordinate setting method comprising a.
The method according to claim 5,

The virtual reference line 320 is composed of a first axis 322 and a second axis 324 that cross each other,

The third step further comprises the step of changing the crossing angle between the first axis (322) and the second axis (324) according to the shape of the base material (1).
The method according to claim 5,

The virtual reference line 320 is formed in a circle or ellipse shape,

The third step, the machine tool coordinate setting method further comprising the step of changing the size and shape of the virtual reference line 320 according to the shape of the base material (1).
The method according to claim 5,

In the second step, the height of the base material 1 is measured by irradiating a laser onto the top surface of the seating bed 100 and the top surface of the base material 1 and measuring the time when the laser is reflected back. More,

The fifth step is a machine tool coordinate setting method, characterized in that for setting the point in which the center of the virtual reference line 320 of the upper surface of the base material (1) is located in three-dimensional zero coordinates.