Numerical control bus line angle milling machine

Abstract

The present application relates to the technical field of milling machine, specifically relates to a numerical control bus milling angle machine, including processing device, detection device and control device, processing device includes body, machine head, the body drives machine head movement, the machine head has conductive milling cutter, detection device includes electric field probe, pulse power supply, control device controls the body to drive the conductive milling cutter to carry out rough milling to bus, pulse power supply applies predetermined voltage to the conductive milling cutter and bus, the body drives the tip of conductive milling cutter and the fillet surface of bus to keep predetermined fixed gap and carry out detection tool travel, and the electric field probe is located between fixed gap and collects normal electric field intensity of each coordinate point, the present application changes through electric field formula, changes due to burr or uneven bus fillet surface, the tip of the wire milling cutter on the other side and the predetermined bus fillet surface are fixed distance, and then only need to record the coordinates that do not meet the requirements to carry out fine milling, without overall fine milling, avoid excessive processing, avoid positioning error, improve efficiency.

Description

Technical Field

[0001] This invention relates to the field of milling machine technology, and more specifically to a CNC busbar milling machine. Background Technology

[0002] High and low voltage electrical complete sets of equipment have high requirements for the chamfering of copper and aluminum busbars (busbars). Generally, busbars with rounded edges on both sides are used. However, after the busbar is cut by the busbar machine, the head is straight. In order to solve the problem of discharge at the tip of the busbar, the edge of the head must be rounded.

[0003] In existing technologies, corner milling follows a fixed program, and the material is removed from the milling machine after milling for inspection. This makes it impossible to identify burrs during the milling process, requiring disassembly and inspection. Furthermore, any defects found after inspection necessitate reprocessing. Even if the exact location is known, reloading and re-milling can easily lead to secondary positioning errors and low efficiency. Additionally, existing technologies often employ "overmilling" to achieve rounded corners, which not only wastes material and reduces the busbar's current-carrying cross-section but also severely exacerbates tool wear.

[0004] Therefore, there is a need for a CNC bus milling machine that can prevent over-processing while improving milling efficiency and accuracy. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a CNC bus milling machine that can prevent over-processing while improving milling efficiency and accuracy.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A CNC busbar milling machine includes a processing device, a detection device, and a control device; The processing device includes a machine body, a machine head, a base, and an insulating clamp. The machine head is connected to the base via the machine body, and the machine body drives the machine head to move along the XYZ axes. The machine head is provided with an airflow nozzle and a conductive milling cutter, and the conductive milling cutter is insulated and drivenly connected to the machine head. The insulating clamp is provided on the base for clamping the busbar. The detection device includes a telescopic rod, an electric field probe, and a pulse power supply. The pulse power supply is electrically connected to a conductive milling cutter. The electric field probe is connected to the machine head via the telescopic rod. The control device is electrically connected to the processing device, the electric field probe, and the pulse power supply. The control device controls the machine body to drive the conductive milling cutter to perform rough milling on the busbar. At the same time as rough milling, the control device controls the air jet nozzle to spray out a dry and cooled air jet to cool and clean the conductive milling cutter and the surface of the busbar. After the rough milling is completed, the conductive milling cutter is separated from the busbar. After rough milling, the pulse power supply is electrically connected to the busbar; the control device controls the pulse power supply to apply a predetermined voltage to the conductive milling cutter and the busbar, the control device controls the machine body to drive the tip of the conductive milling cutter to maintain a predetermined fixed gap with the rounded corner surface of the busbar for detection, and controls the telescopic rod to extend the electric field probe into the fixed gap, and the electric field probe collects the normal electric field intensity of each coordinate point in real time; The control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool feed is within the uniformity threshold range. If not, it records the coordinates of the fillet surface of the generatrix pointed to by the normal electric field intensity and sets it as the fine milling coordinate. The control device controls the machine body to drive the conductive milling cutter to perform fine milling on the rounded corner surface of the busbar according to the fine milling coordinates.

[0007] Preferably, the control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool path is within the uniformity threshold range; if so, the process is completed.

[0008] Preferably, after precision milling is completed, the tool path is re-inspected until the normal electric field intensity at each coordinate point after the tool path is within the uniformity threshold range, then the process is completed.

[0009] Preferably, the insulating clamp has two sets, dividing the base into two mirror-shaped work areas; The two sets of the aforementioned insulating clamps are mirror-mounted in the two work areas; Once one work area completes its process, the machine body moves the machine head to the next work area.

[0010] Preferably, when the machine body moves the machine head to the next work area, the pulse power supply to the busbar in the work area where the process has been completed is disconnected, and then the busbar in the work area where the process has been completed is flipped or replaced. After rough milling is completed in the next work area, the pulse power supply is connected to the busbar where rough milling was completed.

[0011] Preferably, during the detection of the feed, the ends of the conductive milling cutter, the electric field probe, and the surface of the busbar are located on the same straight line.

[0012] Preferably, the uniformity threshold range is 0.9-1.1 times the average of all normal electric field intensities collected by the electric field probe during the detection of the cutting tool.

[0013] Preferably, the machine body includes an X-axis motion component, a Y-axis motion component, and a Z-axis motion component. The X-axis motion component is connected to the base, the Y-axis motion component is connected to the X-axis motion component, the Z-axis motion component is connected to the Y-axis motion component, and the machine head is connected to the Z-axis motion component.

[0014] Preferably, the base is provided with multiple horizontal slots; The insulating clamp includes an insulating plate and at least two sets of fixing clamps. The insulating plate is fixed on the base. The fixing clamp includes a slider, a hand screw, and an insulating clamp plate. The slider is set in a horizontal slot and has a threaded hole that mates with the hand screw. The insulating clamp plate has an oblong hole. The hand screw passes through the oblong hole and mates with the threaded hole.

[0015] Preferably, after the detection tool path is completed, the telescopic rod drives the electric field probe to retract, and the pulse power supply is physically disconnected from the busbar; During precision milling, the air jet is controlled to spray out a dry and cooled air jet to cool and clean the conductive milling cutter and busbar surface.

[0016] The beneficial effects of this invention are as follows: Firstly, by using an insulated transmission connection between the conductive milling cutter and the machine head, along with an insulated clamp, and applying a predetermined voltage to the conductive milling cutter and the busbar using a pulse power supply, the conductive milling cutter and the busbar can be used as two electrodes. After applying the power, a controllable electric field is formed. According to the formula for calculating the electric field E: E=V / d, where V is the voltage, d is the distance, and E is the electric field strength, the given V is a predetermined fixed voltage (generally determined based on the working voltage of the busbar, such as a 10kV busbar). d will change due to burrs or unevenness of the busbar's rounded corner surface. The distance between the tip of the conductor milling cutter on the other side and the predetermined busbar rounded corner surface is fixed. Therefore, only the coordinates that do not meet the requirements need to be recorded for fine milling, eliminating the need for full fine milling and avoiding over-machining. At the same time, the busbar does not need to be removed for inspection, avoiding errors caused by secondary clamping and positioning. It also avoids the problems of material waste, reduced busbar current-carrying cross-section, and accelerated tool wear caused by traditional over-milling.

[0017] Secondly, a dry and cooled air jet is ejected through the airflow nozzle. Since the busbar is made of copper, aluminum, or copper-aluminum alloy, all of which are soft metals with a certain degree of stickiness, it is easy for the cutting tool to stick. The dry and cooled air jet can cool the milling cutter and the busbar, increase hardness, prevent deformation, and improve the milling effect. At the same time, the jet can wash away the metal debris (conductive impurities) that have separated from the busbar but are stuck to the busbar and the milling cutter. This prevents the metal debris stuck to the busbar and the milling cutter from being mistaken for burrs during subsequent testing. It also avoids the use of coolant (conductive impurities) which can cause distortion of the electric field generated by the pulse power supply, or even cause a short circuit, making the data collected by the electric field probe completely invalid.

[0018] Third, the XYZ axis motion of the machine tool is not only used for cutting, but also for driving the probe to perform three-dimensional electric field detection and scanning. It utilizes the positioning accuracy of the machine tool itself, and the tool does not need to be replaced or tool setting is required. The detection coordinate system and the machining coordinate system are completely homogeneous, realizing the homogeneous superposition of "machining accuracy" and "detection accuracy". It avoids further decrease in accuracy caused by detection from different sources and secondary tool setting, and realizes the integration of machining and detection of the machining device.

[0019] Fourth, the telescopic rod can extend during inspection, preventing damage from air jet impact during processing. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a CNC busbar milling machine according to a specific embodiment of the present invention; Figure 2 This is a side view of a CNC busbar milling machine according to a specific embodiment of the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 This is a schematic diagram of the fillet surface detection tool path of a CNC busbar milling machine according to a specific embodiment of the present invention (the dashed line represents the tip formation path of the conductive milling cutter during the detection tool path). Figure 5 This is a schematic diagram illustrating the workflow of a CNC busbar milling machine according to a specific embodiment of the present invention. Labeling Explanation: 1. Machining Device; 11. Machine Body; 111. X-axis Moving Part; 112. Y-axis Moving Part; 113. Z-axis Moving Part; 12. Machine Head; 13. Base; 131. Slot; 14. Insulating Clamp; 141. Insulating Plate; 142. Slider; 143. Hand-tightening Screw; 144. Insulating Clamp Plate; 145. Oval Hole; 15. Airflow Nozzle; 16. Conductive Milling Cutter; 2. Detection Device; 21. Telescopic Rod; 22. Electric Field Probe; 3. Busbar; 31. Rounded Corner Surface; 4. Detection Feed; 5. Fixed Gap. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figures 1 to 5 A CNC busbar 3 milling machine includes a processing device 1, a detection device 2 and a control device; The processing device 1 includes a machine body 11, a machine head 12, a base 13, and an insulating clamp 14. The machine head 12 is connected to the base 13 via the machine body 11, and the machine body 11 drives the machine head 12 to move along the XYZ axes. The machine head 12 is provided with an airflow nozzle 15 and a conductive milling cutter 16, and the conductive milling cutter 16 is insulated and drivenly connected to the machine head 12. The insulating clamp 14 is provided on the base 13 for clamping the busbar 3. The detection device 2 includes a telescopic rod 21, an electric field probe 22, and a pulse power supply. The pulse power supply is electrically connected to the conductive milling cutter 16. The electric field probe 22 is connected to the machine head 12 via the telescopic rod 21. The control device is electrically connected to the processing device 1, the electric field probe 22, and the pulse power supply. The control device controls the machine body 11 to drive the conductive milling cutter 16 to perform rough milling on the busbar 3. At the same time as rough milling, the air jet nozzle 15 sprays out a dry and cooled air jet to cool and clean the surface of the conductive milling cutter 16 and the busbar 3. After the rough milling is completed, the conductive milling cutter 16 is separated from the busbar 3. After rough milling, the pulse power supply is electrically connected to the busbar 3; the control device controls the pulse power supply to apply a predetermined voltage to the conductive milling cutter 16 and the busbar 3, the control device controls the machine body 11 to drive the tip of the conductive milling cutter 16 to maintain a predetermined fixed gap 5 with the rounded corner surface 31 of the busbar 3 for detection of the cutting tool 4, and controls the telescopic rod 21 to extend the electric field probe 22 into the fixed gap 5, and the electric field probe 22 collects the normal electric field intensity of each coordinate point in real time; The control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool feed 4 is within the uniformity threshold range. If not, it records the coordinates of the fillet surface 31 of the generatrix 3 pointed to by the normal electric field intensity and sets it as the fine milling coordinate. The control device controls the machine body 11 to drive the conductive milling cutter 16 to perform fine milling on the rounded corner surface 31 of the busbar 3 according to the fine milling coordinates.

[0023] As can be seen from the above description, First, by using the conductive milling cutter 16 and the machine head 12 insulated transmission connection and the insulating clamp 14, combined with the pulse power supply to apply a predetermined voltage to the conductive milling cutter 16 and the busbar 3, the conductive milling cutter 16 and the busbar 3 can be used as two electrodes. After the power is applied, a controllable electric field is formed. According to the electric field E calculation formula: E=V / d, V is the voltage, d is the distance, and E is the electric field strength. Since the given V is a predetermined fixed voltage (generally determined according to the working voltage of the busbar 3, such as 10kV busbar 3), d will change due to the presence of burrs or unevenness of the rounded corner surface 31 of the busbar 3. The distance between the tip of the conductor milling cutter on the other side and the predetermined rounded corner surface 31 of the busbar 3 is fixed. Therefore, only the coordinates that do not meet the requirements need to be recorded for fine milling, without the need for full fine milling, avoiding over-processing. At the same time, the busbar 3 does not need to be removed for inspection, avoiding errors caused by secondary clamping and positioning. It also avoids the problems of material waste, reduced busbar current-carrying cross-section, and accelerated tool wear caused by traditional over-milling.

[0024] Secondly, the air jet, after being dried and cooled, is ejected through the air jet nozzle 15. Since the busbar is made of copper, aluminum, or copper-aluminum alloy, which are all soft metals with a certain degree of stickiness, it is easy for the cutting tool to stick. The dried and cooled air jet can cool the milling cutter and the busbar, increase the hardness, prevent deformation, and improve the milling effect. At the same time, the jet can wash away the metal debris (conductive impurities) that have separated from the busbar but are stuck to the busbar and the milling cutter. This prevents the metal debris stuck to the busbar and the milling cutter from being mistaken for burrs during subsequent testing. It also avoids the use of coolant (conductive impurities) which can cause distortion of the electric field generated by the pulse power supply, or even cause a short circuit, making the data collected by the electric field probe 22 completely invalid.

[0025] Third, the XYZ axis motion of the machine tool is not only used for cutting, but also for driving the probe to perform three-dimensional electric field detection and scanning. It utilizes the positioning accuracy of the machine tool itself, and the tool does not need to be replaced or tool setting is required. The detection coordinate system and the machining coordinate system are completely homogeneous, realizing the homogeneous superposition of "machining accuracy" and "detection accuracy". It avoids further decrease in accuracy caused by detection from different sources and secondary tool setting, and realizes the integration of machining and detection of machining device 1.

[0026] Fourth, the telescopic rod 21 can extend during inspection, preventing damage caused by air jet impact during processing.

[0027] Furthermore, the control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool path 4 is within the uniformity threshold range; if so, the process is completed.

[0028] Furthermore, after the precision milling is completed, the feed rate 4 is retested until the normal electric field intensity at each coordinate point after the feed rate is within the uniformity threshold range, then the process is completed.

[0029] As can be seen from the above description, after the precision milling is completed, the tool path 4 is re-inspected until the requirements are met. For some specific busbars 3, due to the accuracy requirements, multiple precision milling operations are required to achieve the required accuracy.

[0030] Furthermore, there are two sets of insulating clamps 14, which divide the base 13 into two mirror-shaped work areas; The two sets of the aforementioned insulating clamps 14 are mirror-mounted in the two work areas; Once one work area completes its process, the machine body 11 drives the machine head 12 to move to the next work area.

[0031] As can be seen from the above description, by setting up two mirrored work areas, since the rounded corners at the ends of the busbar are also symmetrical in the middle, the two mirrored work areas do not affect the use of the same path for rough milling, inspection of the tool path 4, and finish milling, thereby improving efficiency.

[0032] Furthermore, when the machine body 11 moves the machine head 12 to the next work area, the pulse power supply to the busbar in the work area where the process has been completed is disconnected, and then the busbar in the work area where the process has been completed is flipped or replaced. After rough milling is completed in the next work area, the pulse power supply is connected to the busbar 3 that has completed rough milling.

[0033] As can be seen from the above description, the busbars on the work area where the process is completed are flipped or replaced because the busbars need to be milled into rounded corners on both sides before they can be used; when the machine head 12 moves to the next work area, the original work area is empty and can be flipped or replaced, which shortens the idle time of the equipment and improves efficiency.

[0034] Furthermore, during the detection of the feed 4, the ends of the conductive milling cutter 16, the electric field probe 22, and the surface of the busbar 3 are located on the same straight line.

[0035] As can be seen from the above description, by ensuring that the ends of the conductive milling cutter 16, the electric field probe 22, and the surface of the busbar 3 are on the same straight line, the accuracy of the detection can be guaranteed.

[0036] Furthermore, the uniformity threshold range is 0.9-1.1 times the average value of all normal electric field intensities collected by the electric field probe 22 during the detection of the cutting tool path 4.

[0037] As can be seen from the above description, by setting a range, since the situations corresponding to busbar 3 with different materials, different requirements, and different sizes are all different, directly using 0.9-1.1 times the average value of all normal electric field strength is because after rough milling, the approximate electric field strength meets the requirements, but there are burrs, etc., that is, only some coordinate points have processing problems. Therefore, using the range value to judge is fast and simple.

[0038] Furthermore, the machine body 11 includes an X-axis moving component 111, a Y-axis moving component 112, and a Z-axis moving component 113. The X-axis moving component 111 is connected to the base 13, the Y-axis moving component 112 is connected to the X-axis moving component 111, the Z-axis moving component 113 is connected to the Y-axis moving component 112, and the machine head 12 is connected to the Z-axis moving component 113.

[0039] Furthermore, the base 13 is provided with a plurality of horizontal slots 131; The insulating clamp 14 includes an insulating plate 141 and at least two sets of fixing clamps. The insulating plate 141 is fixed on the base 13. The fixing clamp includes a slider 142, a hand screw 143, and an insulating clamp 144. The slider 142 is disposed in a horizontal slot 131 and has a threaded hole that mates with the hand screw 143. The insulating clamp 144 has an oblong hole 145. The hand screw 143 passes through the oblong hole 145 and mates with the threaded hole.

[0040] As can be seen from the above description, by using manual fixing clips, different models of busbars 3 can be adapted, thus improving versatility.

[0041] Furthermore, after the detection of the cutting tool 4 is completed, the telescopic rod 21 drives the electric field probe 22 to retract, and the pulse power supply is physically disconnected from the bus 3; While performing precision milling, the air jet 15 is controlled to spray out a dry and cooled air jet to cool and clean the surfaces of the conductive milling cutter 16 and the busbar 3.

[0042] As can be seen from the above description, the electric field probe 22 is retracted by the telescopic rod 21 to prevent the airflow from impacting the electric field probe 22. At the same time, the pulse power supply and the bus 3 are physically disconnected to avoid forming a loop and causing a short circuit. Since a loop cannot be formed, there is no need to disconnect the pulse power supply and the conductive milling cutter 16, thus improving efficiency.

[0043] Example 1 A CNC busbar 3 milling machine includes a processing device 1, a detection device 2 and a control device; The processing device 1 includes a machine body 11, a machine head 12, a base 13, and an insulating clamp 14. The machine head 12 is connected to the base 13 via the machine body 11, and the machine body 11 drives the machine head 12 to move along the XYZ axes. The machine head 12 is provided with an airflow nozzle 15 and a conductive milling cutter 16, and the conductive milling cutter 16 is insulated and drivenly connected to the machine head 12. The insulating clamp 14 is provided on the base 13 for clamping the busbar 3. The machine body 11 includes an X-axis moving component 111, a Y-axis moving component 112, and a Z-axis moving component 113. The X-axis moving component 111 is connected to the base 13, the Y-axis moving component 112 is connected to the X-axis moving component 111, the Z-axis moving component 113 is connected to the Y-axis moving component 112, and the machine head 12 is connected to the Z-axis moving component 113.

[0044] The base 13 is provided with a plurality of horizontal slots 131; The insulating clamp 14 includes an insulating plate 141 and at least two sets of fixing clamps. The insulating plate 141 is fixed on the base 13. The fixing clamp includes a slider 142, a hand screw 143, and an insulating clamp 144. The slider 142 is disposed in a horizontal slot 131 and has a threaded hole that mates with the hand screw 143. The insulating clamp 144 has an oblong hole 145. The hand screw 143 passes through the oblong hole 145 and mates with the threaded hole.

[0045] The detection device 2 includes a telescopic rod 21, an electric field probe 22, and a pulse power supply. The pulse power supply is electrically connected to the conductive milling cutter 16. The electric field probe 22 is connected to the machine head 12 via the telescopic rod 21. The control device is electrically connected to the processing device 1, the electric field probe 22, and the pulse power supply. The control device controls the machine body 11 to drive the conductive milling cutter 16 to perform rough milling on the busbar 3. At the same time as rough milling, the air jet nozzle 15 sprays out a dry and cooled air jet to cool and clean the surface of the conductive milling cutter 16 and the busbar 3. After the rough milling is completed, the conductive milling cutter 16 is separated from the busbar 3. After rough milling, the pulse power supply is electrically connected to the busbar 3. The control device controls the pulse power supply to apply a predetermined voltage to the conductive milling cutter 16 and the busbar 3. The control device controls the machine body 11 to move the tip of the conductive milling cutter 16 and the rounded corner surface 31 of the busbar 3 to maintain a predetermined fixed gap 5 for the detection feed 4. The control device controls the telescopic rod 21 to extend the electric field probe 22 into the fixed gap 5. The electric field probe 22 collects the normal electric field intensity at each coordinate point in real time. During the detection feed 4, the ends of the conductive milling cutter 16 and the electric field probe 22, and the surface of the busbar 3 are on the same straight line. After the detection feed 4 is completed, the telescopic rod 21 moves the electric field probe 22 back, and the pulse power supply is physically disconnected from the busbar 3. The control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool feed 4 is within the uniformity threshold range. If it is, the process is completed; otherwise, it records the coordinates of the fillet surface 31 of the generatrix 3 pointed to by the normal electric field intensity and sets it as the fine milling coordinate. The control device controls the machine body 11 to drive the conductive milling cutter 16 to perform fine milling on the rounded corner surface 31 of the busbar 3 according to the fine milling coordinates. Simultaneously, the airflow nozzle 15 sprays a dried and cooled air jet to cool and clean the conductive milling cutter 16 and the surface of the busbar 3. After fine milling, the tool path 4 is re-tested until the normal electric field intensity at each coordinate point after the tool path is within the uniformity threshold range, thus completing the process. The uniformity threshold range is 0.9-1.1 times the average of all normal electric field intensities collected by the electric field probe 22 during the tool path 4 test.

[0046] Example 2 A CNC busbar 3-corner milling machine, the similarities with Embodiment 1 will not be repeated, the difference being: There are two sets of insulating clamps 14, which divide the base 13 into two mirrored work areas; The two sets of the aforementioned insulating clamps 14 are mirror-mounted in the two work areas; Once one work area completes its process, the machine body 11 drives the machine head 12 to move to the next work area.

[0047] When the machine body 11 moves the machine head 12 to the next work area, the pulse power supply to the busbar in the work area where the process has been completed is disconnected, and then the busbar in the work area where the process has been completed is flipped or replaced. After rough milling is completed in the next work area, the pulse power supply is connected to the busbar 3 that has completed rough milling.

[0048] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A CNC busbar milling machine, characterized in that, Includes processing equipment, testing equipment, and control equipment; The processing device includes a machine body, a machine head, a base, and an insulating clamp. The machine head is connected to the base via the machine body, and the machine body drives the machine head to move along the XYZ axes. The machine head is provided with an airflow nozzle and a conductive milling cutter, and the conductive milling cutter is insulated and drivenly connected to the machine head. The insulating clamp is provided on the base for clamping the busbar. The detection device includes a telescopic rod, an electric field probe, and a pulse power supply. The pulse power supply is electrically connected to a conductive milling cutter. The electric field probe is connected to the machine head via the telescopic rod. The control device is electrically connected to the processing device, the electric field probe, and the pulse power supply. The control device controls the machine body to drive the conductive milling cutter to perform rough milling on the busbar. At the same time as rough milling, the control device controls the air jet nozzle to spray out a dry and cooled air jet to cool and clean the conductive milling cutter and the surface of the busbar. After the rough milling is completed, the conductive milling cutter is separated from the busbar. After rough milling, the pulse power supply is electrically connected to the busbar; the control device controls the pulse power supply to apply a predetermined voltage to the conductive milling cutter and the busbar, the control device controls the machine body to drive the tip of the conductive milling cutter to maintain a predetermined fixed gap with the rounded corner surface of the busbar for detection, and controls the telescopic rod to extend the electric field probe into the fixed gap, and the electric field probe collects the normal electric field intensity of each coordinate point in real time; The control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool feed is within the uniformity threshold range. If not, it records the coordinates of the fillet surface of the generatrix pointed to by the normal electric field intensity and sets it as the fine milling coordinate. The control device controls the machine body to drive the conductive milling cutter to perform fine milling on the rounded corner surface of the busbar according to the fine milling coordinates.

2. The CNC busbar milling machine according to claim 1, characterized in that, The control device records whether the normal electric field intensity at each coordinate point after the complete detection of the tool path is within the uniformity threshold range; if so, the process is completed.

3. The CNC busbar milling machine according to claim 2, characterized in that, After precision milling is completed, the tool path is re-inspected until the normal electric field intensity at each coordinate point after the tool path is within the uniformity threshold range, then the process is completed.

4. The CNC busbar milling machine according to claim 3, characterized in that, The insulating clamp has two sets, dividing the base into two mirrored work areas; The two sets of the aforementioned insulating clamps are mirror-mounted in the two work areas; Once one work area completes its process, the machine body moves the machine head to the next work area.

5. The CNC busbar milling machine according to claim 4, characterized in that, When the machine body moves the machine head to the next work area, the pulse power supply to the busbar in the work area where the process has been completed is disconnected, and then the busbar in the work area where the process has been completed is flipped or replaced. After rough milling is completed in the next work area, the pulse power supply is connected to the busbar where rough milling was completed.

6. The CNC busbar milling machine according to claim 1, characterized in that, During the tool feed test, the ends of the conductive milling cutter, the electric field probe, and the busbar surface are on the same straight line.

7. The CNC busbar milling machine according to claim 1, characterized in that, The uniformity threshold range is 0.9-1.1 times the average of all normal electric field intensities collected by the electric field probe during the detection of the cutting tool.

8. The CNC busbar milling machine according to claim 1, characterized in that, The machine body includes an X-axis motion component, a Y-axis motion component, and a Z-axis motion component. The X-axis motion component is connected to the base, the Y-axis motion component is connected to the X-axis motion component, the Z-axis motion component is connected to the Y-axis motion component, and the machine head is connected to the Z-axis motion component.

9. The CNC busbar milling machine according to claim 1, characterized in that, The base is provided with multiple horizontal slots; The insulating clamp includes an insulating plate and at least two sets of fixing clamps. The insulating plate is fixed on the base. The fixing clamp includes a slider, a hand screw, and an insulating clamp plate. The slider is set in a horizontal slot and has a threaded hole that mates with the hand screw. The insulating clamp plate has an oblong hole. The hand screw passes through the oblong hole and mates with the threaded hole.

10. The CNC busbar milling machine according to claim 1, characterized in that, After the detection tool path is completed, the telescopic rod drives the electric field probe to retract, and the pulse power supply is physically disconnected from the bus. During precision milling, the air jet is controlled to spray out a dry and cooled air jet to cool and clean the conductive milling cutter and busbar surface.

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