Compensation method for six-sided drilling of sheet metal reference positioning

Abstract

This invention discloses a compensation method for six-sided drilling of sheet metal reference positioning, comprising the following steps: Step 1: Processing begins, and processing data is generated based on the information read from the label of the sheet metal being processed; Step 2: The control system reads the processing data to obtain the sheet metal dimensions and process flow; Step 3: The system automatically starts clamping and positioning the sheet metal, and then detects the width dimension of the sheet metal using a laser sensor; Step 4: The system determines whether the detected width dimension of the sheet metal is within the error range set by the control system; if so, the actual error value is obtained by comparing the detection result of the laser sensor with the width dimension of the sheet metal in the processing data, and then the control system automatically compensates the positioning reference on both sides of the sheet metal based on the actual error value to offset the processing data before resuming processing; if not, the sheet metal is removed and an alarm is generated; This method avoids unevenness of the exposed surface or poor assembly of the back panel, thus improving the assembly quality of the furniture.

Description

Technical Field

[0001] This invention relates to the field of woodworking six-sided CNC drilling machining centers, and in particular to a compensation method for the reference positioning of six-sided drilling on boards. Background Technology

[0002] With the emergence of the demand for six-sided processing of wood, six-sided drilling machining centers and production lines have been developed to meet the needs of drilling holes on all six sides of wood. Currently, to improve output and reduce equipment footprint, the application of dual-station six-sided CNC machining centers is increasing. For ease of operation and use, the two stations of a dual-station six-sided drilling machine are designed as mirror images, distributed on the left and right sides respectively, with the positioning and clamping mechanisms located on the outside of each station. This results in different positioning references at the two stations when processing the same board. Especially in panel furniture, if there is a slight error in the board dimensions, the different positioning references at each station will cause the processed boards to assemble with uneven surfaces or poor back panel assembly due to the references not being on the same side, seriously affecting the quality of the furniture.

[0003] Therefore, a new technical solution needs to be developed to address the above problems. Summary of the Invention

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a compensation method for the reference positioning of a six-sided drilled board. This method can achieve automatic compensation for the reference positioning of a six-sided drilled board, avoiding unevenness of the exposed surface or poor assembly of the back panel, thereby improving the assembly quality of furniture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A compensation method for reference positioning of sheet metal using a six-sided drill is provided. This method is based on a dual-station six-sided drill, which includes a first station and a second station arranged in a left-right mirror configuration. The first station is equipped with a first processing head, and the second station is equipped with a second processing head. The first and second processing heads are arranged in a left-right mirror configuration. The first processing head includes two first upper drilling packages arranged side-by-side, and the second processing head includes two second upper drilling packages arranged side-by-side. Laser sensors are installed on both the side of the first upper drilling package facing the second processing head and the side of the second upper drilling package facing the first processing head. The laser sensors are used to detect the width dimension of the sheet metal.

[0007] It includes the following steps:

[0008] Step 1: Processing begins; processing data is generated based on the information read from the labels on the workpieces.

[0009] Step 2: The control system reads the processing data to obtain the sheet metal dimensions and process flow;

[0010] Step 3: Automatically start clamping and positioning the board, and then use a laser sensor to detect the width of the board;

[0011] Step 4: Determine whether the detected board width is within the board width error range set by the control system. If so, when there is an error between the detected board width and the board width in the processing data, the actual error value is obtained by comparing the detection result of the laser sensor with the board width in the processing data. Then, the control system automatically compensates for the offset of the positioning reference on both sides of the board based on the actual error value and performs processing again. If not, the board is removed and an alarm is generated.

[0012] As a preferred embodiment, in step one, the label information of the processed board is read by a barcode scanner, and then the host computer software parses the label information and generates processing data, which is then transmitted to the control system.

[0013] As a preferred embodiment, the control system is a CNC control system. The CNC control system issues machining instructions based on machining data and receives and processes external feedback signals. The machining instructions are executed by the servo system and actuator of the dual-station six-sided drill. The laser sensor sends the displacement change signal of the workpiece to the system IO module of the CNC control system in real time. The system IO module feeds back the external laser sensor signal to the CNC control system.

[0014] As a preferred embodiment, the first machining head further includes a first upper spindle, which is disposed on the side of the first upper drill pack facing the second machining head near the second machining head, and the laser sensor is disposed on the front side of the first upper spindle;

[0015] The second machining head also includes a second upper spindle, which is located on the side of the second upper drill pack facing the first machining head near the first machining head, and the laser sensor is located on the front side of the second upper spindle.

[0016] As a preferred embodiment, the first machining head further includes a first Y-axis slide plate mounted on the frame of the dual-station six-sided drill and a first Y-axis slide plate drive mechanism that drives the first Y-axis slide plate to slide back and forth in the Y direction on the frame; two first Z-axis slide plates mounted on the first Y-axis slide plate and two first Z-axis slide plate drive mechanisms that respectively drive the two first Z-axis slide plates to slide back and forth in the Z direction on the first Y-axis slide plate; a second Z-axis slide plate mounted on the first Y-axis slide plate and a second Z-axis slide plate drive mechanism that drives the second Z-axis slide plate to slide back and forth in the Z direction on the first Y-axis slide plate; the second Z-axis slide plate is located on the front side of the first Y-axis slide plate near the second machining head, the first upper drill bit is mounted on the corresponding first Z-axis slide plate, and the first upper spindle is mounted on the second Z-axis slide plate.

[0017] As a preferred embodiment, the first Y-axis slide plate drive mechanism includes a first drive motor, which is mounted on the first Y-axis slide plate via a Y-axis servo mounting base. A first slider is mounted on the first Y-axis slide plate, and a first guide rail extending laterally is mounted on the frame. The first slider is slidably adapted to the first guide rail.

[0018] As a preferred embodiment, the first Z-axis slide plate drive mechanism includes a second drive motor, which is mounted on the first Y-axis slide plate via a first motor mount, and is connected to the first Z-axis slide plate via a first ball screw.

[0019] The second Z-axis slide plate drive mechanism includes a first drive cylinder, which is mounted on the first Y-axis slide plate via a first cylinder seat, and is driven by the first drive cylinder connected to the second Z-axis slide plate.

[0020] As a preferred embodiment, the second machining head further includes a second Y-axis slide plate mounted on the frame of the dual-station six-sided drill and a second Y-axis slide plate drive mechanism that drives the second Y-axis slide plate to slide back and forth in the Y direction on the frame; two third Z-axis slide plates mounted on the second Y-axis slide plate and two third Z-axis slide plate drive mechanisms that respectively drive the two third Z-axis slide plates to slide back and forth in the Z direction on the second Y-axis slide plate; a fourth Z-axis slide plate mounted on the second Y-axis slide plate and a fourth Z-axis slide plate drive mechanism that drives the fourth Z-axis slide plate to slide back and forth in the Z direction on the second Y-axis slide plate; the fourth Z-axis slide plate is located on the front side of the second Y-axis slide plate near the first machining head, the second upper drill bit is mounted on the corresponding third Z-axis slide plate, and the second upper spindle is mounted on the fourth Z-axis slide plate.

[0021] As a preferred embodiment, the second Y-axis slide plate drive mechanism includes a third drive motor, which is mounted on the second Y-axis slide plate via a Y-axis servo mount. A fourth slider is mounted on the second Y-axis slide plate, and a laterally extending fourth guide rail is mounted on the frame. The fourth slider is slidably adapted to the fourth guide rail.

[0022] As a preferred embodiment, the third Z-axis slide plate drive mechanism includes a fourth drive motor, which is mounted on the second Y-axis slide plate via a second motor mount, and is connected to the third Z-axis slide plate via a second ball screw.

[0023] The fourth Z-axis slide plate drive mechanism includes a second drive cylinder, which is mounted on the second Y-axis slide plate via a second cylinder seat, and is driven by the second drive cylinder connected to the fourth Z-axis slide plate.

[0024] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly involves installing laser sensors on both the side of the first upper drill bit facing the second processing head and the side of the second upper drill bit facing the first processing head. These laser sensors are used to detect the width dimension of the workpiece, and the detection is performed through the following steps: Step 1: Processing begins; processing data is generated based on the information read from the workpiece label. Step 2: The control system reads the processing data to obtain the workpiece dimensions and process flow. Step 3: Automatic clamping and positioning of the workpiece is initiated, and then the width dimension of the workpiece is detected by the laser sensors. Step 4: It is determined whether the detected workpiece width dimension is within the workpiece width set by the control system. Within the dimensional error range; if so, when there is an error between the detected board width dimension and the board width dimension in the processing data, the actual error value is obtained by comparing the detection result of the laser sensor with the board width dimension in the processing data. Then, the control system automatically compensates for the offset of the positioning reference on both sides of the board based on the actual error value and then executes the processing; if not, the board is removed and an alarm is generated. In this way, it can detect the width dimension of the board through the laser sensor, and can automatically compensate for the offset of the positioning reference on both sides of the board with the detection result in cooperation with the host computer software and the CNC control system. This enables automatic compensation of the six-sided drilling board reference positioning, avoiding unevenness of the exposed surface or poor back panel assembly, and improving the assembly quality of the furniture.

[0025] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the first and second processing heads according to an embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional structural schematic diagram of the first processing head according to an embodiment of the present invention;

[0028] Figure 3 This is a three-dimensional structural schematic diagram of the second processing head according to an embodiment of the present invention;

[0029] Figure 4 This is a system control block diagram according to an embodiment of the present invention;

[0030] Figure 5 This is a flowchart of an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached diagram:

[0032] 10. First machining head; 11. First drilling kit

[0033] 12. First upper spindle 13. First Y-axis skateboard

[0034] 14. First Z-axis skateboard 15. Second Z-axis skateboard

[0035] 16. First drive motor 17. First slider

[0036] 18. Second guide rail 19. Second slider

[0037] 101. Third slider; 102. Third guide rail

[0038] 103. Second drive motor; 104. First motor mount

[0039] 105. First drive cylinder; 106. First cylinder seat

[0040] 20. Second machining head; 21. Second upper drilling bag

[0041] 22. Second Y-axis skateboard 23. Third Z-axis skateboard

[0042] 24. Third drive motor 25. Fourth slider

[0043] 26. Fifth guide rail 27. Fifth slider

[0044] 28. Fourth drive motor 29. Second motor mount

[0045] 30. Laser sensor. Detailed Implementation

[0046] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0047] A dual-station six-sided drill includes a first station and a second station arranged in a left-right mirror image configuration. The first station is equipped with a first machining head 10, and the second station is equipped with a second machining head 20. The first machining head 10 and the second machining head 20 are arranged in a left-right mirror image configuration. The first machining head 10 includes two first upper drill packs 11 arranged side-by-side, and the second machining head 20 includes two second upper drill packs 21 arranged side-by-side. The first upper drill pack 11 closer to the second machining head 20 has two sections facing the second machining head 20. Laser sensors 30 are installed on the side of the second upper drill pack 21 facing the first processing head 10. The laser sensors 30 are used to detect the width of the plate. In this way, the width of the plate is detected by the laser sensors 30, thereby realizing the real-time detection of the width of the plate. This ensures that the positioning reference of the plate can be adjusted according to the detected width of the plate. Also, the first processing head 10 includes two first upper drill packs 11 and the second processing head 20 includes two second upper drill packs 21, so that it has multiple drill packs and can meet more processing needs.

[0048] The first machining head 10 further includes a first upper spindle 12, which is disposed on the side of the first upper drill pack 11 of the second machining head 20 facing the second machining head 20, and the laser sensor 30 is disposed on the front side of the first upper spindle 12; the second machining head 20 further includes a second upper spindle, which is disposed on the side of the second upper drill pack 21 of the first machining head 10 facing the first machining head 10, and the laser sensor 30 is disposed on the front side of the second upper spindle.

[0049] The first machining head 10 further includes a first Y-axis slide plate 13 mounted on the frame of the dual-station six-sided drill and a first Y-axis slide plate 13 drive mechanism that drives the first Y-axis slide plate 13 to slide back and forth in the Y direction on the frame; two first Z-axis slide plates 14 mounted on the first Y-axis slide plate 13 and two first Z-axis slide plate 14 drive mechanisms that drive the two first Z-axis slide plates 14 to slide back and forth in the Z direction on the first Y-axis slide plate 13; a second Z-axis slide plate 15 mounted on the first Y-axis slide plate 13 and a second Z-axis slide plate 15 drive mechanism that drives the second Z-axis slide plate 15 to slide back and forth in the Z direction on the first Y-axis slide plate 13; the second Z-axis slide plate 15 is located on the front side of the first Y-axis slide plate 13 near the second machining head 20. Preferably, in this embodiment, the second Z-axis slide plate 15 is mounted on the first Z-axis slide plate 14 near the second machining head 20; the first upper drill pack 11 is mounted on the corresponding first Z-axis slide plate 14, and the first upper spindle 12 is mounted on the second Z-axis slide plate 15.

[0050] The first Y-axis slide plate 13 driving mechanism includes a first drive motor 16, which is mounted on the first Y-axis slide plate 13 via a Y-axis servo mounting base. A first slider 17 is mounted on the first Y-axis slide plate 13, and a first guide rail extending laterally is mounted on the frame. The first slider 17 is slidably adapted to the first guide rail.

[0051] A second guide rail 18 is mounted on the first Y-axis slide plate 13, and a second slider 19 is mounted on the first Z-axis slide plate 14. The second slider 19 is slidably adapted to the second guide rail 18. A third slider 101 is mounted on the front side of the first Z-axis slide plate 14 near the second machining head 20, and a third guide rail 102 is mounted on the second Z-axis slide plate 15. The third slider 101 is slidably adapted to the third guide rail 102.

[0052] The first Z-axis slide plate 14 driving mechanism includes a second drive motor 103, which is mounted on the first Y-axis slide plate 13 via a first motor mount 104. The second drive motor 103 is driven and connected to the first Z-axis slide plate 14 via a first ball screw. The second Z-axis slide plate 15 driving mechanism includes a first drive cylinder 105, which is mounted on the first Y-axis slide plate 13 via a first cylinder mount 106. Preferably, in this embodiment, the first drive cylinder 105 is mounted on the first Z-axis slide plate 14 on the side of the first Y-axis slide plate 13 near the second machining head 20 via a first cylinder mount 106. The first drive cylinder 105 is driven and connected to the second Z-axis slide plate 15.

[0053] The second machining head 20 also includes a second Y-axis slide plate 22 mounted on the frame of the dual-station six-sided drill and a second Y-axis slide plate 22 drive mechanism that drives the second Y-axis slide plate 22 to slide back and forth in the Y direction on the frame; two third Z-axis slide plates 23 mounted on the second Y-axis slide plate 22 and two third Z-axis slide plate 23 drive mechanisms that drive the two third Z-axis slide plates 23 to slide back and forth in the Z direction on the second Y-axis slide plate 22; a fourth Z-axis slide plate mounted on the second Y-axis slide plate 22 and a fourth Z-axis slide plate drive mechanism that drives the fourth Z-axis slide plate to slide back and forth in the Z direction on the second Y-axis slide plate 22; the fourth Z-axis slide plate is located on the front side of the second Y-axis slide plate 22 near the first machining head 10. Preferably, in this embodiment, the fourth Z-axis slide plate is mounted on the third Z-axis slide plate 23 near the first machining head 10; the second upper drill pack 21 is mounted on the corresponding third Z-axis slide plate 23, and the second upper spindle is mounted on the fourth Z-axis slide plate.

[0054] The second Y-axis slide plate 22 drive mechanism includes a third drive motor 24, which is mounted on the second Y-axis slide plate 22 via a Y-axis servo mounting base. A fourth slider 25 is mounted on the second Y-axis slide plate 22, and a laterally extending fourth guide rail is mounted on the frame. The fourth slider 25 is slidably adapted to the fourth guide rail.

[0055] A fifth guide rail 26 is installed on the second Y-axis slide plate 22, and a fifth slider 27 is installed on the third Z-axis slide plate 23. The fifth slider 27 is slidably adapted to the fifth guide rail 26. A sixth slider is installed on the front side of the third Z-axis slide plate 23 near the first machining head 10, and a sixth guide rail is installed on the fourth Z-axis slide plate. The sixth slider is slidably adapted to the sixth guide rail.

[0056] The third Z-axis slide plate 23 driving mechanism includes a fourth drive motor 28, which is mounted on the second Y-axis slide plate 22 via a second motor mount 29. The fourth drive motor 28 is driven and connected to the third Z-axis slide plate 23 via a second ball screw. The fourth Z-axis slide plate driving mechanism includes a second drive cylinder, which is mounted on the second Y-axis slide plate 22 via a second cylinder mount. Preferably, in this embodiment, the second drive cylinder is mounted on the third Z-axis slide plate 23 on the second Y-axis slide plate 22 on the side closest to the first machining head 10 via a second cylinder mount. The second drive cylinder is driven and connected to the fourth Z-axis slide plate.

[0057] like Figure 5 As shown, a compensation method for datum positioning of a six-sided drill plate includes the following steps:

[0058] Step 1: Processing begins. Processing data is generated based on the information read from the labels on the workpieces. Specifically, the label information on the workpieces is read by a barcode scanner, and then the host computer software parses the label information and generates processing data, which is then transmitted to the control system.

[0059] Step 2: The control system reads the processing data to obtain the sheet metal dimensions and process flow;

[0060] Step 3: Automatically start clamping and positioning the board, and then use laser sensor 30 to detect the width dimension of the board;

[0061] Step 4: Determine whether the detected board width is within the board width error range set by the control system. If yes, when there is an error between the detected board width and the board width in the processing data, the detection result of the laser sensor 30 is compared with the board width in the processing data to obtain the actual error value. Then, the control system automatically compensates the offset of the positioning reference on both sides of the board according to the actual error value and performs processing again. If no, the board is removed and an alarm is generated.

[0062] like Figure 4 As shown, the control system is a CNC control system. The CNC control system issues processing instructions and receives and processes external feedback signals based on the processing data. The processing instructions are executed by the servo system and actuator of the dual-station six-sided drill. The laser sensor 30 sends the displacement change signal of the board to the system IO module of the CNC control system in real time. The system IO module feeds back the external laser sensor signal to the CNC control system.

[0063] In summary, the key design feature of this invention lies in the installation of laser sensors on both the side of the first upper drill bit facing the second machining head and the side of the second upper drill bit facing the first machining head. These laser sensors are used to detect the width of the workpiece, specifically through the following steps: Step 1: Processing begins; processing data is generated based on the information from the workpiece label. Step 2: The control system reads the processing data to obtain the workpiece dimensions and process flow. Step 3: Automatic clamping and positioning of the workpiece is initiated, and then the width of the workpiece is detected using the laser sensors. Step 4: It is determined whether the detected width of the workpiece is within the error range set by the control system. If so, When there is an error between the detected width of the board and the width in the processing data, the actual error value is obtained by comparing the detection result of the laser sensor with the width of the board in the processing data. Then, the control system automatically compensates for the offset of the positioning reference on both sides of the board based on the actual error value and then executes the processing data. If not, the board is removed and an alarm is generated. In this way, the width of the board can be detected by the laser sensor, and the detection result can be used to automatically compensate for the offset of the positioning reference on both sides of the board with the cooperation of the host computer software and the CNC control system. This enables automatic compensation of the six-sided drilling board reference positioning, avoids unevenness of the exposed surface or poor back panel assembly, and improves the assembly quality of the furniture.

[0064] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A compensation method for datum positioning of a six-sided drill bit on a sheet metal, characterized in that: It is based on a dual-station six-sided drill, which includes a first station and a second station arranged in a left-right mirror image. The first station is equipped with a first processing head, and the second station is equipped with a second processing head. The first processing head and the second processing head are arranged in a left-right mirror image. The first processing head includes two first upper drilling packages arranged side by side, and the second processing head includes two second upper drilling packages arranged side by side. Laser sensors are installed on the side of the first upper drilling package facing the second processing head and the side of the second upper drilling package facing the first processing head. The laser sensors are used to detect the width dimension of the plate. The first machining head further includes a first upper spindle, which is disposed on the side of the first upper drill pack facing the second machining head near the second machining head, and the laser sensor is disposed on the front side of the first upper spindle; The second machining head also includes a second upper spindle, which is disposed on the side of the second upper drill pack facing the first machining head near the first machining head, and the laser sensor is disposed on the front side of the second upper spindle; It includes the following steps: Step 1: Processing begins; processing data is generated based on the information read from the labels on the workpieces. Step 2: The control system reads the processing data to obtain the sheet metal dimensions and process flow; Step 3: Automatically start clamping and positioning the board, and then use a laser sensor to detect the width of the board; Step 4: Determine whether the detected board width is within the board width error range set by the control system. If so, when there is an error between the detected board width and the board width in the processing data, the actual error value is obtained by comparing the detection result of the laser sensor with the board width in the processing data. Then, the control system automatically compensates for the offset of the positioning reference on both sides of the board based on the actual error value and then executes the processing. If not, the board is removed and an alarm is generated. The control system is a CNC control system. The CNC control system issues processing instructions and receives and processes external feedback signals based on the processing data. The processing instructions are executed by the servo system and actuator of the dual-station six-sided drill. The laser sensor sends the displacement change signal of the board to the system IO module of the CNC control system in real time. The system IO module feeds back the external laser sensor signal to the CNC control system.

2. The compensation method for plate reference positioning using a six-sided drill as described in claim 1, characterized in that: In step one, the label information of the processed board is read by a barcode scanner, and then the host computer software parses the label information and generates processing data, which is then transmitted to the control system.

3. The compensation method for plate reference positioning using a six-sided drill as described in claim 1, characterized in that: The first machining head also includes a first Y-axis slide plate mounted on the frame of the dual-station six-sided drill and a first Y-axis slide plate drive mechanism that drives the first Y-axis slide plate to slide back and forth in the Y direction on the frame; two first Z-axis slide plates mounted on the first Y-axis slide plate and two first Z-axis slide plate drive mechanisms that respectively drive the two first Z-axis slide plates to slide back and forth in the Z direction on the first Y-axis slide plate; a second Z-axis slide plate mounted on the first Y-axis slide plate and a second Z-axis slide plate drive mechanism that drives the second Z-axis slide plate to slide back and forth in the Z direction on the first Y-axis slide plate; the second Z-axis slide plate is located on the front side of the first Y-axis slide plate near the second machining head, the first upper drill bit is mounted on the corresponding first Z-axis slide plate, and the first upper spindle is mounted on the second Z-axis slide plate.

4. The compensation method for plate reference positioning using a six-sided drill as described in claim 3, characterized in that: The first Y-axis slide plate drive mechanism includes a first drive motor, which is mounted on the first Y-axis slide plate via a Y-axis servo mounting base. A first slider is mounted on the first Y-axis slide plate, and a first guide rail extending laterally is mounted on the frame. The first slider is slidably adapted to the first guide rail.

5. The compensation method for plate reference positioning using a six-sided drill as described in claim 3, characterized in that: The first Z-axis slide plate drive mechanism includes a second drive motor, which is mounted on the first Y-axis slide plate via a first motor mount, and is connected to the first Z-axis slide plate via a first ball screw. The second Z-axis slide plate drive mechanism includes a first drive cylinder, which is mounted on the first Y-axis slide plate via a first cylinder seat, and is driven by the first drive cylinder connected to the second Z-axis slide plate.

6. The compensation method for plate reference positioning using a six-sided drill as described in claim 1, characterized in that: The second machining head also includes a second Y-axis slide plate mounted on the frame of the dual-station six-sided drill and a second Y-axis slide plate drive mechanism that drives the second Y-axis slide plate to slide back and forth in the Y direction on the frame; two third Z-axis slide plates mounted on the second Y-axis slide plate and two third Z-axis slide plate drive mechanisms that respectively drive the two third Z-axis slide plates to slide back and forth in the Z direction on the second Y-axis slide plate; a fourth Z-axis slide plate mounted on the second Y-axis slide plate and a fourth Z-axis slide plate drive mechanism that drives the fourth Z-axis slide plate to slide back and forth in the Z direction on the second Y-axis slide plate; the fourth Z-axis slide plate is located on the front side of the second Y-axis slide plate near the first machining head, the second upper drill bit is mounted on the corresponding third Z-axis slide plate, and the second upper spindle is mounted on the fourth Z-axis slide plate.

7. The compensation method for plate datum positioning using a six-sided drill as described in claim 6, characterized in that: The second Y-axis slide plate drive mechanism includes a third drive motor, which is mounted on the second Y-axis slide plate via a Y-axis servo mount. A fourth slider is mounted on the second Y-axis slide plate, and a laterally extending fourth guide rail is mounted on the frame. The fourth slider is slidably adapted to the fourth guide rail.

8. The compensation method for plate reference positioning using a six-sided drill as described in claim 6, characterized in that: The third Z-axis slide plate drive mechanism includes a fourth drive motor, which is mounted on the second Y-axis slide plate via a second motor mount and is connected to the third Z-axis slide plate via a second ball screw. The fourth Z-axis slide plate drive mechanism includes a second drive cylinder, which is mounted on the second Y-axis slide plate via a second cylinder seat, and is driven by the second drive cylinder connected to the fourth Z-axis slide plate.

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