A method for automatically establishing the coordinate system of precision sawed plates

Abstract

The present invention provides a method for automatically establishing a coordinate system of a precision saw board; the method includes: measuring the width of the board (3) to be sawed, and placing it at the center position of the sawing table (2); the sawing table (2) moves from the loading and unloading area to the sawing area, and the position of the sawing table (2) in the horizontal direction is measured in real time; the front end of the board (3) to be sawed triggers the laser thickness gauge (6) to measure the vertical height data and the horizontal position data; the rear end of the board (3) to be sawed triggers the vertical laser thickness gauge (6) to measure the vertical height data and the horizontal position data; the board (3) to be sawed stops at the designated position in the sawing area; and the actual position of the board (3) to be sawed in the sawing machine coordinate system is obtained. After automatically obtaining the board length and thickness data information during the transportation of the board, the present invention automatically establishes the coordinate position of the board in the sawing machine system, so that full-automatic sawing can be performed without the need for a tool setting process during sawing. The method of the present invention has accurate data, is intelligent, and has low labor costs.

Description

Technical Field

[0001] The present invention belongs to the field of metal cutting machine tools; in particular, it relates to a method for automatically establishing the coordinate system of a precision saw for plates. Background Art

[0002] Precision sawing of plates is an important link in plate processing. The usual sawing process is as follows: The plate to be sawn is fed from the loading and unloading area to the sawing area through a moving sawing table; then the sawing machine saws the plate into the specified size in the sawing area; finally, the sawn plate is sent out from the sawing area to the loading and unloading area through the moving sawing table.

[0003] The existing sawing method is as follows: Before the plate is sawn in the sawing area, it is necessary to input the measured length, width, and thickness data of the plate into the sawing machine; at the same time, it is necessary to manually confirm the actual coordinate position of the plate on the sawing table through tool setting operations before sawing operations can be carried out. Since manual measurement will cause errors, it will have a certain impact on the accuracy of sawing. In addition, manual measurement has low efficiency, reducing the production efficiency of the plate sawing machine and increasing the labor intensity of personnel. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for automatically establishing the coordinate system of a precision saw for plates.

[0005] The present invention is realized through the following technical solutions:

[0006] The present invention relates to a method for automatically establishing the coordinate system of a precision saw for plates, including the following steps:

[0007] Step 1: Measure the width of the plate 3 to be sawn, and place the plate 3 to be sawn at the center position of the sawing table 2;

[0008] Step 2: The sawing table 2 carrying the plate 3 to be sawn moves along the guide rail from the loading and unloading area to the sawing area, and the position of the sawing table 2 in the horizontal direction is measured in real time by the laser rangefinder 1;

[0009] Step 3: The front end of the plate 3 to be sawn triggers the vertical laser thickness gauge 6, measures the vertical height position data, and at the same time measures the horizontal direction position data of the sawing table 2 at this time;

[0010] Step 4: The rear end of the plate 3 to be sawn triggers the vertical laser thickness gauge 6, measures the vertical height position data, and at the same time measures the horizontal direction position data of the sawing table 2 at this time;

[0011] Step 5: When the plate 3 to be sawn reaches the specified position in the sawing area, it can stop;

[0012] Step 6: According to the above measurement data, calculate the actual position of the plate 3 to be sawn in the sawing machine coordinate system.

[0013] The laser rangefinder involved in the present invention is SICK DL100, and the laser thickness gauge is SICK OD1000.

[0014] Preferably, a laser rangefinder 1 is installed on the horizontal base of the sawing machine table 2, and its reflector is installed on the sawing table 2. The horizontal data of the object to be measured is measured by the laser rangefinder 1, which is more accurate.

[0015] Preferably, the sawing table 2 is provided with a plurality of cross beams 5 for carrying the plate 3 to be sawn.

[0016] Preferably, a plurality of groups of equally spaced stoppers 7 are welded to the cross beam 5.

[0017] Preferably, the plate 3 to be sawn is provided with a positioning edge 4.

[0018] Preferably, the positioning edge 4 is clamped between the stoppers 7 under the cross beam 5. Since the sawing table 2 is provided with a plurality of cross beams 5 and a plurality of groups of equally spaced stoppers 7 are welded under the cross beam 5, the positioning edge 4 can ensure that the plate is in the center position on the sawing table 2, laying a foundation for accurate data measurement.

[0019] Preferably, the laser thickness gauge 6 is installed between the sawing area and the loading / unloading area. The relevant data of the object to be measured is measured by the laser thickness gauge 6, which is more accurate and avoids large errors.

[0020] The present invention has the following advantages:

[0021] (1) The present invention provides a method for automatically establishing the coordinate system of precision sawed plates. During the plate sawing process, only the width dimension of the plate needs to be measured during loading, and there is no need to measure the length, thickness, etc. After automatically obtaining the length and thickness data information of the plate during the transportation process of the plate, the coordinate position of the plate in the sawing machine system is automatically established, so that full-automatic sawing can be performed without the need for a tool setting process.

[0022] (2) Compared with the traditional method, the method of the present invention has accurate data, is intelligent, has low labor costs, and high efficiency. Description of the Drawings

[0023] Figure 1 is a schematic diagram of the method for automatically establishing the coordinate system of precision sawed plates of the present invention;

[0024] Figure 2 is Figure 1 the A-A cross-sectional view of;

[0025] Figure 3 is the axonometric schematic diagram of the plate to be sawn in place on the sawing table in the present invention;

[0026] Figure 4Schematic diagram of the device status in Step 3 of the embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the device status in Step 4 of the embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the automatic establishment of the coordinate system of the plate material of the present invention;

[0029] In the figure: 1 Laser rangefinder, 2 Sawing table, 3 Plate material to be sawn, 4 Plate edge positioning block, 5 Cross beam, 6 Laser thickness gauge, 7 Stop bar. Detailed implementation method

[0030] The present invention will be described in detail below in conjunction with specific embodiments. It should be noted that the following embodiments are only further descriptions of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Embodiment

[0032] A method for automatically establishing the coordinate system of the precision saw plate material in this embodiment is as shown in Figures 1-3 shown.

[0033] Step 1: Place the plate material 3 to be sawn with the measured thickness W at the center position of the sawing table 2 (clamp the positioning edge 4 on the plate material 3 to be sawn between the blocks 7 under the cross beam 5 to ensure that the center of the plate material 3 to be sawn coincides with the center of the sawing table);

[0034] Step 2: Place a laser rangefinder 1 horizontally on the sawing table 2. The reflector of the laser rangefinder 1 is installed on the sawing table 2. The sawing table 2 runs along the guide rail from the sawing area and the loading and unloading area, and the laser rangefinder 1 measures the distance between the sawing table 2 and the laser rangefinder 1 in real time;

[0035] Step 3: When the front end of the plate material 3 to be sawn on the sawing table 2 triggers the laser thickness gauge 6 in the vertical direction, that is, when the data of the laser thickness gauge 6 changes from H0 to H1, at this time, the data of the laser rangefinder 1 in the horizontal direction is L1, as shown in Figure 4 ;

[0036] Step 4: When the rear end of the plate material 3 to be sawn on the sawing table 2 triggers the laser thickness gauge 6 in the vertical direction again, that is, when the data of the laser thickness gauge 6 changes from H1 to H0, at this time, the data of the laser rangefinder 1 in the horizontal direction is L2, as shown in Figure 5 ;

[0037] Step 5: The sawing table 2 stops after carrying the plate material 3 to be sawn to the designated fixed position in the sawing area;

[0038] Step 6: According to the 4 coordinate data of the plate material 3 to be sawn collected, as shown in Figure 6As shown in the figure, the actual position of the to-be-sawed board 3 in the sawing machine coordinate system is then calculated, and the coordinate data is automatically transmitted to the sawing machine; the data of each part of the board is recorded as follows:

[0039] (X1, Y1, Z1) = (L0 - L1, -W / 2, H0 - H1)

[0040] (X2, Y2, Z2) = (L0 - L1, W / 2, H0 - H1)

[0041] (X3, Y3, Z3) = (L0 - L2, -W / 2, H0 - H1)

[0042] (X4, Y4, Z4) = (L0 - L2, W / 2, H0 - H1)

[0043] Since the board is placed in the center after the width dimension W of the board is determined, the Y coordinate of the center line of the board in the sawing machine coordinate system is 0. Then, the Y coordinates on both sides of the board are -W / 2 on one side and W / 2 on the other side, and -W / and W are symmetric about the Y axis.

[0044] Appendix Figure 6 Among them, the coordinate (0, 0, 0) represents the zero points of the X, Y, and Z directions defined in the sawing machine numerical control system. All equipment operation program control commands are based on this reference point.

[0045] The sawing machine accurately calculates the actual position of the board 3 in the sawing machine coordinate system according to the coordinates at the above 4 positions.

[0046] For a method for automatically establishing the coordinate system of a precision saw board involved in this embodiment, during the board sawing process, only the width dimension of the board needs to be measured during loading, and there is no need to measure the length, thickness, etc.; after automatically obtaining the board length and thickness data information during the transportation of the board in the present invention, the coordinate position of the board in the sawing machine system is automatically established, so that the full-automatic sawing can be performed without the tool setting process. Compared with the traditional method, the method of the present invention has accurate data, is intelligent, has low labor costs, and high efficiency.

[0047] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A method for automatically establishing a coordinate system of precision sawed plates, characterized in that, It includes the following steps: Step 1: Measure the width W of the plate (3) to be sawn, and place the plate (3) to be sawn at the center position of the sawing table (2); Step 2: Place a laser rangefinder (1) horizontally on the sawing table (2). The reflector of the laser rangefinder (1) is installed on the sawing table (2). The sawing table (2) carries the plate (3) to be sawn and moves from the loading and unloading area to the sawing area. The position of the sawing table (2) in the horizontal direction is measured in real time by the laser rangefinder (1); Step 3: When the front end of the plate (3) to be sawn triggers the laser thickness gauge (6) in the vertical direction, that is, when the data of the laser thickness gauge (6) changes from H0 to H1, the data of the laser rangefinder (1) in the horizontal direction at this time is L1; Step 4: When the rear end of the plate (3) to be sawn triggers the laser thickness gauge (6) in the vertical direction, that is, when the data of the laser thickness gauge (6) changes from H1 to H0, the data of the laser rangefinder (1) in the horizontal direction at this time is L2; Step 5: The plate (3) to be sawn stops at the designated position in the sawing area; Step 6: Calculate the actual position of the plate (3) to be sawn in the sawing machine coordinate system. The calculation process is as follows: According to the 4 coordinate data of the plate (3) to be sawn collected, then calculate the actual position of the plate (3) to be sawn in the sawing machine coordinate system, and automatically transmit the coordinate data to the sawing machine; The data of each part of the plate is recorded as follows: (X1, Y1, Z1) = (L0 - L1, -W / 2, H0 - H1) (X2, Y2, Z2) = (L0 - L1, W / 2, H0 - H1) (X3, Y3, Z3) = (L0 - L2, -W / 2, H0 - H1) (X4, Y4, Z4) = (L0 - L2, W / 2, H0 - H1) Since when the width dimension W of the plate is determined and the plate is placed in the center, the Y coordinates of the center line of the plate in the sawing machine coordinate system are all 0. Then the Y coordinates on both sides of the plate are -W / 2 on one side and W / 2 on the other side, and -W / and W are symmetric about the Y axis; The coordinate (0, 0, 0) represents the zero points of the X, Y, and Z directions defined in the sawing machine numerical control system. All equipment operation program control commands are based on this reference point; L0 is the distance between the laser rangefinder (1) and the laser thickness gauge (6) in the horizontal direction; The laser thickness gauge (6) is installed between the sawing area and the loading and unloading area.

2. The method for automatically establishing the coordinate system of the precision saw board as described in claim 1, wherein The sawing table (2) is provided with a plurality of cross beams (5) for carrying the plate (3) to be sawn.

3. The method for automatically establishing the coordinate system of the precision saw board according to claim 2, wherein A plurality of groups of equally spaced stoppers (7) are welded under the cross beam (5).

4. The method for automatically establishing the coordinate system of the precision sawed board according to claim 1, characterized in that, The plate (3) to be sawn is provided with a positioning edge (4).

5. The method for automatically establishing the coordinate system of the precision saw board as described in claim 4, wherein The positioning edge (4) is clamped between the stoppers (7) under the cross beam (5).

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