High-precision dynamic balance automatic correction machine based on laser etching process and rotor correction method

Abstract

The invention discloses a high-precision dynamic balance automatic correction machine based on a laser etching process and a rotor correction method. Comprising an installation reference large bottom plate, and a rotor clamping rotating mechanism, a measuring mechanism, a belt secondary pressing driving mechanism, a lifting profiling dust collection mechanism and a laser assembly which are arranged on the installation reference large bottom plate; the measuring mechanism is used for measuring the unbalance amount of the rotor workpiece; the laser assembly is used for performing laser correction on the rotor workpiece; the rotor clamping and rotating mechanism is used for clamping a rotor workpiece in the laser correction process or positioning the unbalance of the rotor workpiece; the belt secondary pressing driving mechanism is used for driving the rotor workpiece to rotate or positioning the unbalance of the rotor workpiece; and the lifting profiling dust collection mechanism is used for collecting dust and cooling the rotor workpiece in the laser correction process. The device and the method are good in stability and high in precision.

Description

TECHNICAL FIELD

[0001] The application relates to the field of rotor correction, in particular to a high-precision dynamic balancing automatic correction machine based on a laser etching process and a rotor correction method. BACKGROUND

[0002] In recent years, high-speed brushless motors have been widely used in various applications, from electric vehicles to industrial production equipment. The demand for brushless motors continues to grow. Brushless motors are favored for their high efficiency, high speed, low noise and other characteristics. However, as the operating speed of these motors continues to increase, the requirement for rotor dynamic balancing also increases. High-speed brushless motors require higher precision dynamic balancing to ensure that they do not produce vibrations and noise during high-speed operation, and to ensure their long-term stability and reliability. This growth has led to a strong demand for high-precision dynamic balancing machines.

[0003] In traditional dynamic balancing correction processes, the main correction methods are still milling, drilling and adding counterweights. However, for high-speed brushless motor internal rotors with rotational speeds of tens of thousands of revolutions, these balancing methods are difficult to meet the requirements of high-precision dynamic balancing. Laser high-precision etching dynamic balancing correction process has obvious advantages over traditional tool weight removal.

[0004] First, laser etching technology uses highly precise laser beams to achieve fine processing of small areas on the tool surface, so it can achieve more accurate dynamic balancing correction. This precision far exceeds that of traditional tool weight removal methods, which can more effectively reduce the impact of vibrations and imbalance on equipment and products.

[0005] Secondly, for emerging micro rotors, the thickness of the counterweight is often less than 1mm, and the correctable area is often very small. Traditional tool weight removal often requires clamps to press and then cut or process, and the limited space makes such processing very difficult, and may also cause roughness or damage to the tool surface, reducing the durability and stability of the workpiece. In contrast, laser etching process does not produce physical cutting and wear, so it does not damage the tool surface, prolonging the service life of the tool.

[0006] In addition, laser etching technology also has the characteristics of high automation and controllability, through precise program control and monitoring, it can achieve high efficiency and high quality correction. Traditional tool weight removal process may require more manual intervention and time, and efficiency and stability are not as good as laser etching.

[0007] Therefore, compared with traditional tool weight removal, laser high-precision etching dynamic balancing correction process has higher precision, longer tool life, higher degree of automation and more stable correction effect, so it has obvious advantages in improving production efficiency and product quality.

[0008] The existing laser correction balancing machine has the following problems: (1) Since the weight and the unbalance amount established by the laser processing have a deviation, the existing laser balancing machine has a low single processing qualification rate.

[0009] (2) In the process of laser etching, the molten metal jet meets the cold to form dust, which can cover the rotor and the machine surface, affect the appearance of the rotor, and cause the ceramic rod to be not smooth when the rotor is tested, the rotor to vibrate before and after, and the test data to be unstable.

[0010] (3) In the rotor dynamic balancing test process, the rotor needs to rotate at a certain speed and be pulled to the direction of the test machine stop piece through the belt oblique pull, and the height of the belt and the angle of the oblique pull are particularly important. Too much oblique pull will cause the rotor to rebound and affect the stability of the data, and too little oblique pull will cause the rotor to not be close to the stop piece, and the data is also not good. During the test process, the stability of the existing belt driving mechanism is insufficient, so the interference of the high-precision dynamic balancing test machine is mainly introduced by the belt driving mechanism.

[0011] (4) In the process of dynamic balancing correction, the angle of the unbalance amount needs to be positioned. In the general process, the driving belt is usually used for positioning, but a little slip of the belt will cause an angle difference of 20°, 30° or even more, so the positioning angle of the belt turning is not accurate, causing the equipment to be processed or not processed. SUMMARY

[0012] In view of the deficiencies of the prior art, the present application provides a high-precision dynamic balancing automatic correction machine based on a laser etching process and a rotor correction method.

[0013] The technical scheme adopted by the present application is: One, a high-precision dynamic balancing automatic correction machine based on a laser etching process The high-precision dynamic balancing automatic correction machine comprises a mounting reference large bottom plate, a rotor clamping and rotating mechanism, a measuring mechanism, a belt two-stage compression driving mechanism, a lifting profiling dust collection mechanism and a laser assembly arranged on the mounting reference large bottom plate; One side of the measuring mechanism is arranged with the rotor clamping and rotating mechanism, the upper part of the measuring mechanism clamps the rotor workpiece, and the measuring mechanism and the rotor clamping and rotating mechanism are respectively movably connected with the axial two ends of the rotor workpiece. The measuring mechanism is used for measuring the unbalance amount of the rotor workpiece, and the rotor clamping and rotating mechanism is used for rotating the rotor workpiece to position the unbalance amount or fixing the rotor workpiece in the process of laser correction. The upper part of the belt-driven two-stage clamping mechanism extends above the rotor workpiece, and the upper part of the belt-driven two-stage clamping mechanism is connected to the rotor workpiece via a belt, thereby driving the rotor workpiece to rotate around its own axis or driving the rotor workpiece to rotate to position the imbalance. The dust collection part of the lifting and contouring dust collection mechanism is located above the rotor workpiece and is used to collect dust and cool the rotor workpiece during the laser correction process. The laser emitting part of the laser assembly is located above the dust collection part of the lifting and contouring dust collection mechanism, and is used to perform laser correction on the rotor workpiece.

[0014] The measuring mechanism includes a test machine base, a vibration acquisition sensor, a speed sensor, a test machine floating platform, and a support fixture; The test machine base, test machine floating platform and support fixture are arranged in sequence from bottom to top. The support fixture can rotatably support one end of the rotor workpiece. The axis of the rotor workpiece is arranged horizontally and can be driven to rotate by a belt-driven two-stage clamping mechanism. The speed sensor is used to collect the rotational speed of the rotor workpiece, and the vibration transmission copper rod of the vibration acquisition sensor is connected to the floating platform of the testing machine to collect the vibration of the floating platform of the testing machine. The test machine base is fixedly connected to the mounting reference base plate. The test machine base is flexibly connected to the test machine floating platform through several vertically arranged spring rods. The test machine floating platform is connected to the support clamp.

[0015] The belt secondary pressing drive mechanism is located behind the measuring mechanism and includes a horizontal slide mechanism and a secondary lifting belt drive mechanism. The horizontal slide mechanism is used to adjust the horizontal position of the secondary lifting belt drive mechanism. The secondary lifting belt drive mechanism includes a vertical base and a belt, a belt horizontal drive assembly, a secondary clamping mechanism, a first damper, a motor horizontal adjustment plate, a first hard stop screw, a vertical connecting block, a lifting cylinder, a vertical base, and a vertical mounting plate. The belt is connected to the belt horizontal drive assembly. The belt can rotate the rotor workpiece by sliding drive. The belt horizontal drive assembly is used to adjust the horizontal position of the belt and drive the belt. The vertical base is installed on the sliding table mounting plate of the horizontal sliding table mechanism, the vertical base adopts an L-shaped base, the top surface of the horizontal arm of the L-shaped base is sequentially provided with a lifting cylinder and a motor horizontal adjusting plate, the lifting cylinder can drive the motor horizontal adjusting plate to vertically reciprocate, the front end of the motor horizontal adjusting plate is provided with a vertical connecting block, and the vertical connecting block is provided with a first damper and a first hard screw;

[0016] The secondary pressing mechanism comprises a secondary cylinder, a ladder structure, a secondary pressing mounting frame and a secondary cylinder mounting frame; The secondary pressing mounting frame is fixedly connected with the vertical mounting plate, one side of the secondary pressing mounting frame is provided with the secondary cylinder, and the top of the secondary pressing mounting frame is slidably provided with the ladder structure; the top surface of the ladder structure forms a first contact surface and a second contact surface, and the height of the first contact surface is greater than that of the second contact surface; the secondary cylinder can drive the ladder structure to reciprocate leftward and rightward, so that the first contact surface or the second contact surface moves to the front of the first damper and the first hard screw, and then the first damper and the first hard screw can abut against the first contact surface or the second contact surface.

[0017] The rotor clamping and rotating mechanism comprises a clamping and rotating mechanism mounting frame, a rotating clamping component and a positioning driving component mounted on the clamping and rotating mechanism mounting frame, and the positioning driving component is used to drive the rotating clamping component to move in the front-rear and left-right directions; The rotating clamping component comprises a claw clamp chuck, a floating air joint, an air claw, a claw base, a rotating air joint mounting plate, a stepping motor, a motor mounting plate and two groups of height adjusting assemblies; The two groups of height adjusting assemblies are arranged on the front side and the rear side of the motor mounting plate respectively, and are used to adjust the up-down position of the rotating clamping component; The motor mounting plate is provided with a stepping motor, the output shaft of the stepping motor is connected with the air claw through the floating air joint, the claw base of the air claw is provided with the claw clamp chuck, the claw clamp chuck is used to clamp a rotor workpiece, the air claw is connected with an external air path through a rotating air joint, and the rotating air joint is mounted on a rotating air joint mounting plate.

[0018] The lifting and contouring dust collection mechanism includes a vortex cooling pipe, an angled dust collection pipe mounting plate, a dust collection hood mounting plate, a dust collection hood, an air blowing transition block, a guide rod cylinder, and an L-shaped frame for mounting the lifting cylinder. The lifting cylinder mounting L-shaped frame is mounted on the mounting reference base plate. A guide rod cylinder is mounted on the lifting cylinder mounting L-shaped frame. The top end of the guide rod cylinder is a telescopic end, which is connected to the dust hood through the dust hood mounting plate. The dust hood is placed above the rotor workpiece. The guide rod cylinder can drive the dust hood mounting plate and the dust hood to achieve reciprocating motion in the vertical direction. The vortex cooling tube is used to generate cooling gas. The outlet of the vortex cooling tube is connected to the inlet of the air blowing transition block through a pipe. The outlet of the air blowing transition block is connected to the inside of the dust collection hood through a bamboo joint tube. The outlet of the bamboo joint tube is arranged corresponding to the rotor workpiece. The inside of the dust collection hood is also connected to the inlet of the dust collection tube, so that the cooling gas can blow the dust generated by laser correction into the inlet of the dust collection tube.

[0019] II. A rotor correction method using the above-mentioned high-precision dynamic balancing automatic correction machine The rotor correction method includes the following steps: Step 1) Place the rotor workpiece on the measuring mechanism, start the horizontal slide mechanism, use the second cylinder to drive the slide mounting plate to move forward on the linear guide rail, and push the secondary lifting belt drive mechanism forward until the belt on the secondary lifting belt drive mechanism moves directly above the rotor workpiece.

[0020] Step 2) Use the lifting cylinder to drive the motor horizontal adjustment plate to move downward on the linear guide rail, control the belt on the secondary lifting belt drive mechanism to descend until the belt contacts the rotor workpiece; at the same time, use the secondary cylinder in the secondary clamping mechanism to drive the secondary slider to move to the left, so that the first damper and the first hard stop screw abut against the first contact surface to achieve primary clamping. The belt is driven to slide by a belt horizontal drive assembly. The belt drives the rotor workpiece to rotate at a preset speed. The rotor workpiece is then subjected to dynamic balance testing using a measuring mechanism.

[0021] Step 3) After the test is completed, the unbalance and unbalance phase at both ends of the rotor workpiece are obtained. The unbalance is then substituted into the pre-obtained laser de-weighting curve to obtain the laser processing parameters.

[0022] The laser processing parameters include the number of laser etchings N along the axial direction of the rotor workpiece; the laser correction uses N laser etchings, each laser etching including a first layer etching and a second layer etching performed sequentially, the scanning line spacing of the first layer etching being greater than the scanning line spacing of the second layer etching.

[0023] The laser de-weighting curve is the relationship curve between laser processing parameters and the amount of imbalance. The specific process for obtaining the laser de-weighting curve is as follows: using a pre-set scan line spacing for the first and second etch layers, the rotor sample is laser-etched several times, and the amount of imbalance after each laser etching is measured. The number of laser etchings and the corresponding amount of imbalance constitute a set of data. The multiple sets of data are fitted using fitting methods such as the least squares method to obtain the laser de-weighting curve.

[0024] Step 4) Use the rotor clamping rotation mechanism or the secondary clamping function of the belt secondary clamping drive mechanism to position the rotor workpiece according to the unbalance phase; In step 4, the rotor clamping rotation mechanism or the belt-driven two-stage pressure drive mechanism is selected to locate the imbalance amount depending on whether the rotor workpiece has a clamping shaft. If the rotor workpiece has a clamping shaft, the rotor clamping rotation mechanism is used to locate the imbalance amount; if the rotor workpiece does not have a clamping shaft, the belt-driven two-stage pressure drive mechanism is used to locate the imbalance amount. The process of positioning the imbalance using a rotor clamping and rotating mechanism is as follows: Under the external pneumatic drive, the chuck on the pneumatic gripper clamps the clamping shaft of the rotor workpiece away from the support fixture. According to the imbalance phase, a stepper motor is used to drive the chuck to rotate, thereby driving the rotor workpiece to rotate, so that the imbalance area of ​​the rotor workpiece is located directly above. The process of positioning the imbalance using the belt-driven two-stage clamping mechanism is as follows: the second-stage cylinder in the two-stage clamping mechanism drives the second-stage slider to move to the right, so that the first damper and the hard stop screw abut against the top surface of the second-stage clamping block to achieve two-stage clamping; the belt horizontal drive assembly drives the belt to slide, and the belt drives the rotor workpiece to rotate, so that the imbalance area of ​​the rotor workpiece is located directly above.

[0025] Step 5) Use the guide rod cylinder to lower the dust collection hood to the height of the rotor workpiece, start the eddy current cooling pipe, start the laser in the laser assembly, use the height adjustment screw handwheel on the lifting adjustment module to adjust the focal length of the laser from the surface of the rotor workpiece, adjust the power of the laser to the target power, use the laser to perform laser correction on the rotor workpiece, and after the laser correction is completed, turn off the laser and the eddy current cooling pipe. Step 6) If the laser processing parameters include laser correction of the other end of the rotor workpiece in the axial direction, then after laser correction of the other end of the rotor workpiece in the axial direction according to steps 4 to 5, proceed to step 7). Otherwise, proceed directly to step 7); Step 7) The laser modified rotor workpiece is tested again for dynamic balance according to the step 2, and after the test is completed, the unbalance amount and unbalance phase of the axial two ends of the laser modified rotor workpiece are obtained; If the unbalance amount of the axial two ends of the laser modified rotor workpiece is greater than or equal to the preset threshold, the test is unqualified, the machining parameters of the laser are obtained according to the unbalance amount, and after positioning the unbalance amount according to the unbalance phase, the step 4 is returned to; If the unbalance amount of the axial two ends of the laser modified rotor workpiece is less than the preset threshold, the test is qualified, the horizontal adjusting plate driven by the lifting cylinder is moved upward on the linear guide rail, the belt on the secondary lifting belt driving mechanism is controlled to rise, and then the second cylinder driving slide table mounting plate is moved backward on the linear guide rail, the secondary lifting belt driving mechanism is retreated backward, and the laser modified rotor workpiece is removed.

[0026] The beneficial effects of the present application are: 1. The present application provides an automatic fitting machining curve algorithm, and designs a scheme for calculating the machining area according to the unbalance amount feedback, thereby realizing high precision and one-time machining qualification.

[0027] 2. The lifting type profiling dust collection mechanism in the present application forms a small closed space, and uses low temperature gas to blow the cut dust into the dust suction port, and the blowing and dust suction are performed simultaneously, so that the dust can be effectively sucked away, and the surface smoothness of the machining position is effectively improved.

[0028] 3. The present application provides a belt driving mechanism with good stability and convenient adjustment, which can realize two different belt pressing heights. During dynamic balance test, the first level pressing is used, the small belt pressing angle is used for pressing, and the small belt angle reduces the interference of the belt on the small rotor test data; during unbalance amount positioning, the second level pressing with large belt angle is used for turning, which improves the friction force of the belt and reduces the deviation of the machining position caused by the inaccuracy of the turning angle caused by slipping. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the structural layout of the present application; Figure 2 is the structural diagram of the rotor clamping and rotating mechanism of the present application; Figure 3 is the exploded view of the rotor clamping and rotating mechanism of the present application; Figure 4 is the structural diagram of the rotating clamping part B1 of the present application.

[0030] Figure 5 is the exploded view of the rotating clamping part B1 of the present application.

[0031] Figure 6Is the structure diagram of the measuring mechanism C0 of the application.

[0032] Figure 7 Is the structure diagram of the secondary belt compression driving mechanism D0 of the application.

[0033] Figure 8 Is the structure diagram of the horizontal sliding table mechanism D1 of the application.

[0034] Figure 9 Is the structure diagram of the secondary lifting belt driving mechanism D2 of the application.

[0035] Figure 10 Is the structure diagram of the secondary compression mechanism D2.3 of the application.

[0036] Figure 11 Is the structure diagram of the lifting profiling dust collection mechanism E0 of the application.

[0037] Figure 12 Is the structure diagram of the laser assembly F0 of the application.

[0038] Figure 13 Is the diagram of two laser filling intervals used by the application.

[0039] Figure 14 Is the main machining flowchart of the equipment of the application.

[0040] Figure 15 Is the schematic diagram of different belt wrap angles in the application.

[0041] Among them, A0, installation reference big bottom plate, B0, rotor clamping and rotating mechanism, C0, measuring mechanism, D0, secondary belt compression driving mechanism, E0, lifting profiling dust collection mechanism, F0, laser assembly; B1, rotating clamping part, B1.1, rotor workpiece, B1.2, claw clamp chuck, B1.3, floating air joint, B1.4, air claw, B1.5, claw seat, B1.6, rotating air joint mounting plate, B1.7, stepping motor, B1.8, motor mounting plate, B1.9, turning height adjusting cover plate, B1.10, height adjusting block L-shaped frame, B1.11, height adjusting screw; B2, left and right adjusting block cover plate, B3, left and right adjusting plate, B4, middle plate, B5, left and right adjusting block seat, B6, first floating joint, B7, linear guide rail, B8, buffer damper, B9, first air cylinder, B10, damper mounting frame, B11, clamping and turning mechanism mounting frame, B12, fourth fixed screw; C1, test machine base, C2, vibration acquisition sensor, C3, speed sensor, C4, test machine floating platform, C5, support clamp; D1, horizontal slide mechanism, D1.1, damping mounting block, D1.2, horizontal cylinder connecting plate, D1.3, second floating joint, D1.4, slide assembly bottom plate, D1.5, second cylinder, D1.6, damping block, D1.7, slide mounting plate, D1.8, linear guide rail; D2, two-stage lifting belt driving mechanism, D2.1, belt driving adjusting mechanism, D2.2, rotating adjusting plate compression locking screw, D2.3, two-stage compression mechanism, D2.3.1, two-stage cylinder, D2.3.2, first fixing screw, D2.3.3, two-stage compression block, D2.3.4, two-stage sliding block, D2.3.5, two-stage compression mounting frame, D2.3.6, two-stage cylinder mounting frame; D2.4, vertical adjusting block, D2.5, sliding block back plate, D2.6, linear guide rail, D2.7, first damper, D2.8, motor horizontal adjusting plate, D2.9, horizontal adjusting block, D2.10, first hard file screw adjusting nut, D2.11, horizontal adjusting cover plate, D2.12, first damper adjusting nut, D2.13, vertical connecting block, D2.14, third floating joint, D2.15, first hard file screw, D2.16, lifting cylinder, D2.17, second fixing screw, D2.18, vertical base, D2.19, vertical mounting plate; D2.20, driven wheel; E1, vortex cooling pipe, E2, inclined angle dust collection pipe mounting plate, E3, dust cover mounting plate, E4, dust cover, E5, T-shaped clamping seat, E6, air blowing transition block, E7, guide rod cylinder, E8, lifting cylinder mounting L-shaped frame, E9, second damper, E10, dust collection cylinder damping mounting plate, E11, second hard stop screw adjusting nut, E12, third fixing screw, E13, lifting cylinder lower protection sheet metal; F1, lifting adjusting module, F2, laser installation bottom plate, F3, laser. DETAILED DESCRIPTION

[0042] The application will be described in further detail below with reference to the drawings and specific embodiments.

[0043] The application will be described in further detail below with reference to the drawings and specific embodiments.

[0044] The first aspect of the application provides a high-precision dynamic balance automatic correction machine, which has strong compatibility for rotors and better adaptability for rotors, and can process very short shaft rotors or very small volume rotors.

[0045] The rotor clamping and rotating mechanism in the high-precision dynamic balance automatic correction machine has the characteristics of simple structure, low manufacturing cost and easy adjustment.

[0046] The belt secondary compression driving mechanism in the high-precision dynamic balance automatic correction machine can realize two different belt compression heights. During dynamic balance testing, the first compression is used to compress the belt at a small angle, and the small belt angle reduces the interference of the belt on the data during testing of the small rotor. During imbalance positioning, the second compression is used to turn at a large belt angle, which improves the friction of the belt and reduces the deviation of the machining position caused by the inaccuracy of the turning angle due to slipping.

[0047] The lifting profiling dust suction mechanism E0 in the high-precision dynamic balance automatic correction machine forms a small closed cavity in space, and the large dust suction pipeline can fully utilize the dust collection effect of the dust collector. Further, through the cooperation of the cooling vortex tube and cooling gas, the temperature of the rotor during machining can be effectively reduced to prevent demagnetization caused by high temperature. In addition, under the action of the airflow, the surface finish of the machined surface can be further improved.

[0048] The second aspect of the present application provides a rotor correction method using laser to correct the dynamic balance of the rotor. Compared with the conventional milling cutter or weighting process, the method has the characteristics of high machining precision, no need for large force to clamp the workpiece, small damage to the workpiece, low requirement for the weight removal position of the workpiece, and can correct the dynamic balance of the workpiece in positions that are difficult to process by conventional milling cutters, drills and weighting. Combined with the high-precision dynamic balance automatic correction machine, the method has better effects in machining effect, machining efficiency and adaptability to rotors.

[0049] One. A high-precision dynamic balance automatic correction machine based on laser etching process It comprises a mounting reference large bottom plate A0 and a rotor clamping and rotating mechanism B0, a measuring mechanism C0, a belt secondary compression driving mechanism D0, a lifting profiling dust suction mechanism E0 and a laser assembly F0 arranged on the top surface of the mounting reference large bottom plate A0.

[0050] The measuring mechanism C0 is used to measure the imbalance of the rotor workpiece B1.1. The laser assembly F0 is used to correct the rotor workpiece B1.1 by laser. The rotor clamping and rotating mechanism B0 is used to clamp the rotor workpiece B1.1 during laser correction, and / or position the imbalance of the rotor workpiece B1.1. The belt secondary compression driving mechanism D0 is used to drive the rotor workpiece B1.1 to rotate around its own axis at a specified speed, and / or position the imbalance of the rotor workpiece B1.1. The lifting profiling dust suction mechanism E0 is used to suction and cool the rotor workpiece B1.1 during laser correction.

[0051] In the embodiment, the positioning of the unbalance amount is selected according to whether the rotor workpiece B1.1 has a clamping shaft, i.e., the rotor clamping and rotating mechanism B0 or the belt secondary pressing driving mechanism D0 is selected. Specifically, if the rotor workpiece B1.1 has a clamping shaft, the positioning of the unbalance amount is performed by using the rotor clamping and rotating mechanism B0, and if the rotor workpiece B1.1 does not have a clamping shaft, the positioning of the unbalance amount is performed by using the belt secondary pressing driving mechanism D0.

[0052] As a preferred embodiment of the present application, the measuring mechanism C0 is installed at the central position in front of the installation reference large base plate A0, and is used for measuring the unbalance amount of the rotor workpiece B1.1. The rotor clamping and rotating mechanism B0 is installed at the right side of the measuring mechanism C0, and is used for clamping the rotor workpiece B1.1 from the right side after the measuring of the measuring mechanism C0 is completed, and positioning the unbalance amount, and fixing the workpiece during the cutting of the laser assembly F0, the lifting and profiling dust collection mechanism E0 dust collection and cooling, and preventing the rotor workpiece B1.1 from being moved in position by the cooling gas. The lifting and profiling dust collection mechanism E0 is installed at the left side of the measuring mechanism C0, and is used for cooling and dust collection of the rotor workpiece B1.1 during the cutting of the laser assembly F0; the belt secondary pressing driving mechanism D0 is installed at the rear of the measuring mechanism C0, and is used for driving the rotor workpiece B1.1 on the measuring mechanism C0 to rotate at a specified speed, and also can perform the positioning of the unbalance amount for some special rotor workpieces B1.1. The laser assembly F0 is installed at the left side of the belt secondary pressing driving mechanism D0, and the laser head is located directly above the rotor workpiece B1.1 on the measuring mechanism C0 and is aligned with the rotor workpiece B1.1, and is used for cutting to achieve the unbalance amount of the rotor workpiece B1.1.

[0053] 1. Measuring mechanism C0 As shown in Figure 1 , the measuring mechanism C0 can be arranged at the central position of the top surface of the installation reference large base plate A0.

[0054] As shown in Figure 6 , the measuring mechanism C0 includes a testing machine base C1, a vibration acquisition sensor C2, a speed sensor C3, a testing machine floating platform C4 and a support clamp C5. The testing machine base C1, the testing machine floating platform C4 and the support clamp C5 are arranged in sequence from bottom to top, the support clamp C5 rotatably supports one end of the rotor workpiece B1.1, the axis of the rotor workpiece B1.1 is horizontally arranged, and can be rotated around its own axis by the driving of the belt secondary pressing driving mechanism D0. The speed sensor C3 is used for acquiring the rotating speed of the rotor workpiece B1.1, and the vibration transmission copper rod of the vibration acquisition sensor C2 is connected with the testing machine floating platform C4, and the vibration acquisition sensor C2 is used for acquiring the vibration of the testing machine floating platform C4, i.e., the movement displacement, through the vibration transmission copper rod.

[0055] The test machine base C1 is fixedly connected with the installation reference large bottom plate A0 through screws, the test machine base C1 is soft connected with the test machine floating platform C4 through a plurality of vertically arranged spring rods, and the support clamp C5 is fixedly installed on the test machine floating platform C4, so that when the rotor workpiece B1.1 rotates, the vibration excited by the unbalance amount can be transmitted to the test machine floating platform C4 through the support clamp C5.

[0056] In specific implementation, the support clamp C5 can adopt a single-side support clamp as shown in Figure 6 , to be suitable for the rotor workpiece B1.1 with a clamping shaft, or a double-side support clamp such as a V-shaped support frame, to be suitable for the rotor workpiece B1.1 without a clamping shaft.

[0057] When the rotor workpiece B1.1 rotates, the vibration excited by the unbalance amount is transmitted to the test machine floating platform C4 through the support clamp C5, and the test machine floating platform C4 transmits the motion displacement to the vibration acquisition sensor C2 again with swinging, the speed sensor C3 acquires the rotating speed of the rotor workpiece B1.1 through the mark line or other features on the rotor workpiece B1.1, and takes the signal reference of the mark line as the reference of the unbalance amount phase, through the above process, thereby measuring the unbalance amount of the rotor workpiece B1.1.

[0058] 2, the belt secondary compression driving mechanism D0 As shown in Figure 1 , the belt secondary compression driving mechanism D0 is located at the rear side of the measuring mechanism C0.

[0059] As shown in Figure 7 , the belt secondary compression driving mechanism D0 includes a horizontal sliding table mechanism D1 and a secondary lifting belt driving mechanism D2. The horizontal sliding table mechanism D1 is used to adjust the horizontal position of the secondary lifting belt driving mechanism D2, so as to move the belt on the secondary lifting belt driving mechanism D2 to the directly above of the rotor workpiece B1.1.

[0060] In specific implementation, the horizontal sliding table mechanism D1 is located at the bottom, the upper end of the horizontal sliding table mechanism D1 carries the secondary lifting belt driving mechanism D2, and the lower end bottom plate (sliding table assembly bottom plate D1.4) of the horizontal sliding table mechanism D1 is connected with the installation reference large bottom plate A0 through screws.

[0061] 2.1, horizontal sliding table mechanism D1 As shown in Figure 8As shown in the figure, the horizontal sliding table mechanism D1 includes a sliding table assembly bottom plate D1.4, and a damping mounting block D1.1, a second air cylinder D1.5, a damping block D1.6, a sliding table mounting plate D1.7 and a linear guide rail D1.8 mounted on the sliding table assembly bottom plate D1.4. The linear guide rail D1.8 is arranged in the front-back direction and is located in the center of the top surface of the sliding table assembly bottom plate D1.4. Two damping mounting blocks D1.1 are arranged on the right side of the linear guide rail D1.8, and the two damping mounting blocks D1.1 are arranged at the front and back ends of the sliding table assembly bottom plate D1.4, respectively. The second air cylinder D1.5 is arranged on the left side of the linear guide rail D1.8. The sliding table mounting plate D1.7 is arranged to slide above the linear guide rail D1.8. The sliding table mounting plate D1.7 is in transmission connection with the second air cylinder D1.5, so that the second air cylinder D1.5 can drive the sliding table mounting plate D1.7 to move back and forth along the linear guide rail D1.8 in the front-back direction. The damping block D1.6 is mounted on the right side of the sliding table mounting plate D1.7. The damping block D1.6 and the two damping mounting blocks D1.1 are arranged in a line. The damping mounting block D1.1 is provided with a buffer damper and a hard stop, so as to realize the buffering and stroke adjustment of the front-back movement of the sliding table mounting plate D1.7. The two-stage lifting belt driving mechanism D2 is mounted above the sliding table mounting plate D1.7.

[0062] The transmission connection between the sliding table mounting plate D1.7 and the second air cylinder D1.5 is as follows: The horizontal sliding table mechanism D1 further includes a horizontal air cylinder connecting plate D1.2 and a second floating joint D1.3. The telescopic end of the second air cylinder D1.5 is connected to the horizontal air cylinder connecting plate D1.2 through the second floating joint D1.3. The horizontal air cylinder connecting plate D1.2 is connected to the left rear end of the sliding table mounting plate D1.7. The right front end of the sliding table mounting plate D1.7 is connected to the damping block D1.6.

[0063] 2.2, two-stage lifting belt driving mechanism D2 As shown in the figure, Figure 9 and Figure 10 The two-stage lifting belt driving mechanism D2 includes a vertical base D2.18, and a belt, a belt horizontal driving assembly, a two-stage pressing mechanism D2.3, a linear guide rail D2.6, a first damper D2.7, a motor horizontal adjusting plate D2.8, a first hard stop screw adjusting nut D2.10, a first damper adjusting nut D2.12, a vertical connecting block D2.13, a third floating joint D2.14, a first hard stop screw D2.15, a lifting air cylinder D2.16, a vertical base D2.18 and a vertical mounting plate D2.19 mounted on the vertical base D2.18. The belt is in transmission connection with the belt horizontal driving assembly. When the belt is above the rotor workpiece B1.1 and contacts the rotor workpiece B1.1 at a certain belt wrapping angle, the belt can drive the rotor workpiece B1.1 to rotate at a preset speed or rotate at a certain angle through sliding driving. The belt horizontal driving assembly is used to adjust the horizontal position of the belt and drive the belt.

[0064] The vertical base D2.18 is installed on the sliding table mounting plate D1.7, the vertical base D2.18 adopts an L-shaped base, the top surface of the horizontal arm of the L-shaped base is sequentially arranged with a lifting cylinder D2.16 and a motor horizontal adjusting plate D2.8, the lifting cylinder D2.16 can drive the motor horizontal adjusting plate D2.8 to vertically reciprocate on the linear guide rail D2.6, the front end of the motor horizontal adjusting plate D2.8 is installed with a horizontally arranged vertical connecting block D2.13, the vertical connecting block D2.13 is installed with a first damper D2.7 and a first hard screw D2.15, the first damper D2.7 is connected with the vertical connecting block D2.13 through a first damper adjusting nut D2.12, and the first hard screw D2.15 is connected with the vertical connecting block D2.13 through a first hard screw adjusting nut D2.10; the vertical arm of the L-shaped base is fixedly installed with a vertical mounting plate D2.19, the vertical mounting plate D2.19 is installed with a secondary pressing mechanism D2.3, the secondary pressing mechanism D2.3 is located directly below the first damper D2.7 and the first hard screw D2.15, the secondary pressing mechanism D2.3 includes a stepped structure, the top surface of the stepped structure has a stepped contact surface, and the stepped structure can reciprocate in the left-right direction, so that the first damper D2.7 and the first hard screw D2.15 can abut against any step of the stepped contact surface, thereby realizing secondary height adjustment of the secondary lifting belt driving mechanism D2.

[0065] The secondary height adjustment of the secondary lifting belt driving mechanism D2 specifically refers to that when some special workpiece shafts are too short to be rotated by the rotor clamping and rotating mechanism B0, the secondary lifting belt driving mechanism D2 is used for positioning the unbalance amount. When the rotor workpiece B1.1 on the measuring mechanism C0 needs to be positioned by the secondary lifting belt driving mechanism D2, the belt drives the workpiece to rotate with a large wrap angle (such as shown in the figure) and friction. In addition, during the dynamic balance test of the measuring mechanism C0, the interference is mainly caused by the vibration of the belt, so it is necessary to adjust the belt in the left-right, up-down and inclination angles. The belt driving adjusting mechanism D2.1 is internally provided with nut adjusting structures in various directions, so as to realize high degree of freedom, high precision and convenient adjustment. Figure 15

[0066] ​The vertical base D2.18 is fixedly connected with the sliding table mounting plate D1.7, the vertical base D2.18 is fixedly connected with the fixed end of the lifting cylinder D2.16, and the telescopic end of the lifting cylinder D2.16 is connected with the motor horizontal adjusting plate D2.8 through the third floating joint D2.14. The motor horizontal adjusting plate D2.8 is slidably connected with the vertical base D2.18 through the linear guide rail D2.6, and specifically, the side surface of the motor horizontal adjusting plate D2.8 is provided with a vertically arranged sliding block supporting plate D2.5, the sliding block supporting plate D2.5 is provided with the linear guide rail D2.6, the linear guide rail D2.6 is vertically arranged, the vertical arm of the vertical base D2.18 is provided with a sliding block, and the sliding block is slidably arranged on the linear guide rail D2.6. In addition, the vertical mounting plate D2.19 is connected with the motor horizontal adjusting plate D2.8 in an L-shaped structure, and the sliding block supporting plate D2.5 functions as a reinforcing rib for the L-shaped structure.

[0067] The belt horizontal driving assembly comprises a belt driving adjusting mechanism D2.1, a rotating adjusting plate pressing and locking screw D2.2, a vertical adjusting block D2.4, a sliding block supporting plate D2.5, a horizontal adjusting block D2.9, a horizontal adjusting cover plate D2.11 and a driven wheel D2.20. In the belt driving adjusting mechanism D2.1, the vertical adjusting block D2.4 is provided with a pin structure in the contact surface of the motor horizontal adjusting plate D2.8, the vertical adjusting block D2.4 can rotate around the pin to adjust the inclination angle, and the rotating adjusting plate pressing and locking screw D2.2 is used for locking when the inclination angle is adjusted to the right position; the horizontal adjusting block D2.9 is installed at the right end of the motor horizontal adjusting plate D2.8, a push-pull screw is arranged between the horizontal adjusting cover plate D2.11 and the horizontal adjusting block D2.9, and the left and right positions of the belt driving adjusting mechanism D2.1 are accurately adjusted. The driven wheel D2.20 is used for installing a driving belt to drive the high-speed rotation of the rotor workpiece B1.1 during dynamic balance testing.

[0068] The secondary pressing mechanism D2.3 The secondary pressing mechanism D2.3 comprises a secondary cylinder D2.3.1, a stepped structure, a secondary pressing mounting frame D2.3.5, and a secondary cylinder mounting frame D2.3.6. The secondary pressing mounting frame D2.3.5 is fixedly connected with the vertical mounting plate D2.19, the secondary cylinder D2.3.1 is mounted on the secondary cylinder mounting frame D2.3.6 at one side of the secondary pressing mounting frame D2.3.5, a stepped structure is slidably arranged on the top of the secondary pressing mounting frame D2.3.5, the top surface of the stepped structure forms a first contact surface and a second contact surface, the height of the first contact surface is greater than that of the second contact surface, and the secondary cylinder D2.3.1 can drive the stepped structure to reciprocate along the left-right direction on the secondary pressing mounting frame D2.3.5, so that the first contact surface or the second contact surface moves to the front of the first damper D2.7 and the first hard screw D2.15, and then the first damper D2.7 and the first hard screw D2.15 can abut against the first contact surface or the second contact surface.

[0069] As an optional embodiment of the present application, as shown in Figure 9 and Figure 10 The stepped structure mainly comprises a first fixing screw D2.3.2, a second fixing screw D2.17, a secondary pressing block D2.3.3, and a secondary sliding block D2.3.4. The secondary sliding block D2.3.4 adopts an L-shaped structure, the vertical arm of the L-shaped structure is arranged towards the side of the secondary cylinder D2.3.1, the secondary pressing block D2.3.3 is arranged at the corner of the top of the secondary sliding block D2.3.4 (i.e. the connecting point of the vertical arm and the horizontal arm), the width of the secondary pressing block D2.3.3 in the left-right direction is smaller than that of the secondary sliding block D2.3.4, so that the top surface of the secondary pressing block D2.3.3 and the top surface of the secondary sliding block D2.3.4 form the first contact surface and the second contact surface respectively. The secondary pressing block D2.3.3 and the secondary sliding block D2.3.4 are fixedly connected through the first fixing screw D2.3.2 and the second fixing screw D2.17.

[0070] Further, the secondary cylinder D2.3.1 in the secondary pressing mechanism D2.3 can also be replaced by a motor or other driver.

[0071] 3, rotor clamping and rotating mechanism B0 The support clamp C5 and the rotor clamping and rotating mechanism B0 are respectively used for clamping the two ends of the rotor workpiece B1.1 in the axial direction. Therefore, as shown in Figure 1 The rotor clamping and rotating mechanism B0 can be arranged on the left side or the right side of the measuring mechanism C0. The rotor clamping and rotating mechanism B0 can clamp the workpiece to rotate by a certain angle, and rotate the position of imbalance to the uppermost position for etching by laser. This method can immediately position the amount of imbalance and etch by laser after the dynamic balance test is completed, and has higher processing efficiency.

[0072] AsFigure 2 、 Figure 3 The rotor clamping and rotating mechanism B0 includes a clamping and rotating mechanism mounting frame B11, and a rotating clamping component B1 and a positioning driving component mounted on the clamping and rotating mechanism mounting frame B11, which is used to drive the rotating clamping component B1 to move in the front-rear and left-right directions.

[0073] 3.1, rotating clamping component B1 As shown in Figure 3 、 Figure 4 、 Figure 5 The rotating clamping component B1 includes a claw clamp chuck B1.2, a floating air joint B1.3, an air claw B1.4, a claw seat B1.5, a rotating air joint mounting plate B1.6, a stepping motor B1.7, a motor mounting plate B1.8, and a height adjustment assembly. The motor mounting plate B1.8 is fixedly connected with the left-right adjustment plate B3 in the positioning driving component through screws.

[0074] The front side and the rear side of the motor mounting plate B1.8 are each arranged with a set of height adjustment assemblies, which are used to realize the movement of the rotating clamping component B1 in the up-down direction, and through fine adjustment, the claw clamp chuck B1.2 is directly opposite to the rotor workpiece B1.1.

[0075] The height adjustment assembly includes a height adjustment block L-shaped frame B1.10 and a height adjustment screw B1.11. The vertical arm of the height adjustment block L-shaped frame B1.10 is mounted on the side surface of the motor mounting plate B1.8, the height adjustment screw B1.11 is arranged on the horizontal arm of the height adjustment block L-shaped frame B1.10, the bottom surface of the height adjustment screw B1.11 abuts against the top surface of the positioning driving component, i.e. the top surface of the left-right adjustment plate B3, and the height adjustment assembly further includes a rotating height adjustment cover plate B1.9, which is horizontally arranged above the height adjustment screw B1.11 and is slidably connected with the vertical arm of the height adjustment block L-shaped frame B1.10, so that the rotating height adjustment cover plate B1.9 can cover the top of the height adjustment screw B1.11. When it is necessary to adjust the height of the rotating clamping component B1, the push-pull force generated by rotating the height adjustment screw B1.11 is used to realize the height adjustment of the rotating clamping component B1 in the up-down direction.

[0076] ​​​The motor mounting plate B1.8 is provided with a stepping motor B1.7 and a floating air joint B1.3, and the stepping motor B1.7 is drivingly connected with the floating air joint B1.3. Specifically, the stepping motor B1.7 is mounted on the side surface of the motor mounting plate B1.8 away from the measuring mechanism C0, one end of the floating air joint B1.3 is mounted on the side surface of the motor mounting plate B1.8 close to the measuring mechanism C0, and the output shaft of the stepping motor B1.7 is connected with the motor shaft in the floating air joint B1.3. The floating air joint B1.3 is connected with the claw clamp chuck B1.2 through the air claw B1.4 and the claw base B1.5, and the claw clamp chuck B1.2 is used to clamp the clamping shaft of the rotor workpiece B1.1 away from the support clamp C5. The air claw B1.4 is connected with the external air path through a rotary air joint, and the rotary air joint is mounted on the rotary air joint mounting plate B1.6. The rotary shaft of the stepping motor B1.7 is parallel to the left-right direction, so that the stepping motor B1.7 can drive the claw clamp chuck B1.2 and the rotor workpiece B1.1 clamped on the claw clamp chuck B1.2 to rotate.

[0077] 3.2, positioning driving part As shown in Figure 3 , Figure 4 , Figure 5 , the positioning driving part includes a left-right adjusting block cover plate B2, a left-right adjusting plate B3, an intermediate plate B4, a left-right adjusting block base B5, a first floating joint B6, a linear guide rail B7, a buffer damper B8, a first air cylinder B9, a damper mounting frame B10, a clamping steering mechanism mounting frame B11, and a fourth fixed screw B12. The damper mounting frame B10 is located below the middle of the clamping steering mechanism mounting frame B11, and when the first air cylinder B9 is retracted, it is in contact with the intermediate plate B4 through the buffer damper B8; the left-right adjusting block cover plate B2, the left-right adjusting plate B3, the intermediate plate B4, and the left-right adjusting block base B5 together form a left-right adjustable structure. When adjusting, the left-right adjusting plate B3 is pushed and pulled through the screw inside the left-right adjusting block base B5, thereby realizing the left-right adjustment of the rotary clamping part B1. The first air cylinder B9 is nestedly mounted at the right end of the clamping steering mechanism mounting frame B11, and the first air cylinder B9 is connected with the left-right adjusting plate B3 through the first floating joint B6. When the air cylinder acts, it realizes the forward and backward movement of pushing the rotary clamping part B1.

[0078] 4, lifting profiling dust collection mechanism E0 As shown in Figure 11As shown, the lifting profiling dust collection mechanism E0 includes a vortex cooling pipe E1, an inclined angle dust collection pipe mounting plate E2, a dust cover mounting plate E3, a dust cover E4, a T-shaped clamping seat E5, a blowing transition block E6, a guide rod air cylinder E7, and a lifting air cylinder mounting L-shaped frame E8. The lifting profiling dust collection mechanism forms a small closed space, and uses low-temperature gas to blow the cut dust into the dust collection port, and blowing and dust collection are performed simultaneously, which can effectively suck away the dust and effectively improve the smoothness of the machining position surface.

[0079] The lifting air cylinder mounting L-shaped frame E8 is installed on the installation reference large bottom plate A0, the guide rod air cylinder E7 is installed on the side of the lifting air cylinder mounting L-shaped frame E8 close to the measuring mechanism C0, the bottom end of the guide rod air cylinder E7 is provided with a lifting air cylinder lower protection sheet metal E13, the top end of the guide rod air cylinder E7 is a telescopic end, and the guide rod air cylinder E7 is connected with the dust cover E4 through the dust cover mounting plate E3. The guide rod air cylinder E7 can drive the dust cover mounting plate E3 and the dust cover E4 to realize vertical reciprocating motion, the dust cover E4 is arranged above the rotor workpiece B1.1 and directly below the laser F3. The T-shaped clamping seat E5 is used for clamping and fixing the vortex cooling pipe E1.

[0080] In specific implementation, the edge of the bottom end of the dust cover E4 extends inward, and a profiling design is adopted to wrap the rotor and the test fixture in a closed cavity, that is, the dust cover E4 forms a sealed cavity around the rotor workpiece B1.1, and the dust collection effect of the rotor laser machining position on the dust can be improved by dust collection in the closed cavity.

[0081] In specific implementation, the top end face of the dust cover E4 is made of light-transmitting material, so that the laser emitted by the laser F3 passes through the dust cover E4 and irradiates the surface of the rotor workpiece B1.1.

[0082] The vortex cooling pipe E1 is used for generating low-temperature cooling gas, the low-temperature outlet of the vortex cooling pipe E1 is communicated with the inlet of the blowing transition block E6 through a pipeline, the outlet of the blowing transition block E6 is communicated with the inside of the dust cover E4 through a bamboo joint pipe, the outlet of the bamboo joint pipe is arranged corresponding to the rotor workpiece B1.1, and the inside of the dust cover E4 is also communicated with the inlet of the dust collection pipe, so that the cooling gas can blow the dust generated by laser modification into the inlet of the dust collection pipe.

[0083] Further, in specific implementation, a cooling gas injection port can be arranged at the front end of the dust cover E4, the outlet of the bamboo joint pipe is connected with the cooling gas injection port, and the cooling gas is used to remove the dust generated by laser processing in time and play a cooling function.

[0084] The lifting profiling dust collection mechanism E0 further comprises a damping component and a protection component arranged outside the bottom of the lifting cylinder mounting L-shaped frame E8. The damping component is used to realize the buffering of the lifting profiling dust collection mechanism E0, and comprises a second damper E9, a dust collection cylinder damping mounting plate E10, a second hard stop screw adjusting nut E11 and a third fixing screw E12. The dust collection cylinder damping mounting plate E10 is fixedly connected with the lifting cylinder mounting L-shaped frame E8 through the third fixing screw E12, and the second damper E9 and the second hard stop screw are mounted on the dust collection cylinder damping mounting plate E10. The second hard stop screw is connected with the dust collection cylinder damping mounting plate E10 through the second hard stop screw adjusting nut E11. The protection component is used to reduce the impact and vibration, and comprises a lifting cylinder lower protection sheet metal E13.

[0085] Further, in the lifting profiling dust collection mechanism E0, a horizontal driving device can be used to push the dust collection cover E4 forward.

[0086] As an optional embodiment of the present application, the lifting cylinder mounting L-shaped frame E8 is located at the bottom, and a guide rod cylinder E7 is mounted on the right side. The lower end of the guide rod cylinder E7 is provided with the lifting cylinder lower protection sheet metal E13, and the upper end is connected with the dust collection cover E4 through the dust collection cover mounting plate E3. The thick pipe at the rear end of the dust collection cover E4 is used to connect the dust collection pipe, and the opening at the front end is used to spray the cooling gas from the blowing transition block E6 to the surface of the laser processed rotor through the bamboo joint pipe. The low-temperature gas generated by the eddy current cooling pipe E1 enters the blowing transition block E6 through the pipeline, further reducing the temperature of the gas, and realizing the low-temperature cooling effect. The dust collection cylinder damping mounting plate E10 is mounted on the upper part of the left end of the lifting cylinder mounting L-shaped frame E8. When the guide rod cylinder E7 is lowered, the second damper E9 mounted on the dust collection cylinder damping mounting plate E10 is in contact with the dust collection cover mounting plate E3, thereby realizing the buffering and height adjustment of the lifting profiling dust collection mechanism E0.

[0087] 5. Laser assembly F0 As shown in Figure 12 , the laser assembly F0 comprises a lifting adjustment module F1, a laser mounting bottom plate F2 and a laser F3. The lifting adjustment module F1 is located at the bottom and is connected with the mounting reference large bottom plate A0 through a screw. The right side of the lifting adjustment module F1 is a lifting platform, and the upper end is a height adjustment lead screw hand wheel. When the hand wheel is rotated, the lifting platform can be adjusted up and down. The laser F3 is mounted on the lifting platform on the right side of the lifting adjustment module F1 through the laser mounting bottom plate F2, so as to realize the adjustment of the focal length of the laser F3 from the surface of the rotor workpiece B1.1 through the hand wheel of the lifting adjustment module F1.

[0088] II. A rotor correction method The application provides a laser processing method suitable for processing a surface without oxidation blackening, dust and burr, and with high surface finish. Figure 13 The second layer etching is shown in the left drawing, and the second layer etching is shown in the right drawing. Figure 13 The second layer etching is shown in the right drawing.

[0089] The rotor correction method comprises the following steps: 1) The rotor workpiece B1.1 is placed on the measuring mechanism C0, the horizontal sliding table mechanism D1 is started, the second cylinder D1.5 is used to drive the sliding table mounting plate D1.7 to move forward on the linear guide rail D1.8, and the second lifting belt driving mechanism D2 is pushed forward until the belt on the second lifting belt driving mechanism D2 is above the rotor workpiece B1.1; 2) The motor horizontal adjustment plate D2.8 is driven to move downward on the linear guide rail D2.6 by using the lifting cylinder D2.16, the belt on the second lifting belt driving mechanism D2 is controlled to descend until the belt contacts the rotor workpiece B1.1, and the first damper D2.7 and the first hard screw D2.15 contact the first contact surface (i.e. the top surface of the second sliding block D2.3.4) by using the second cylinder D2.3.1 in the second pressing mechanism D2.3 to drive the second sliding block D2.3.4 to move left, so as to realize the first pressing; the belt is driven to slide by using the belt horizontal driving assembly, the rotor workpiece B1.1 is rotated at a preset speed by the belt, and the rotor workpiece B1.1 is dynamically balanced by using the measuring mechanism C0; In the first pressing state, the workpiece is driven to rotate at a small belt wrap angle (as shown in Figure 15 ), so as to reduce the influence of the belt on the test data and realize high-precision measurement; 3) After the test is completed, the unbalance amount and the unbalance phase of the two sides of the rotor workpiece B1.1 in the axial direction are obtained, the unbalance amount is substituted into the laser weight removal curve obtained in advance, and the laser processing parameter is obtained; the laser weight removal curve is a relationship curve between the laser processing parameter and the unbalance amount; 4) The rotor clamping and rotating mechanism B0 or the second pressing function of the belt second pressing driving mechanism D0 is used to position the unbalance amount of the rotor workpiece B1.1 according to the unbalance phase. In step 4), the positioning of the unbalance amount is selected according to whether the rotor workpiece B1.1 has a clamping shaft, the rotor clamping and rotating mechanism B0 or the belt secondary compression driving mechanism D0; if the rotor workpiece B1.1 has a clamping shaft, the support clamp C5 can be a single-sided support clamp, rotatably supporting one end of the rotor workpiece B1.1, using the rotor clamping and rotating mechanism B0 to fix the other end of the rotor workpiece B1.1 and drive the rotor workpiece B1.1 to rotate, to position the unbalance amount, and if the rotor workpiece B1.1 does not have a clamping shaft, the support clamp C5 can be a V-shaped support frame, using the belt secondary compression driving mechanism D0 to position the unbalance amount, and then using the air claw B1.4 in the rotor clamping and rotating mechanism B0, the claw clamp chuck B1.2 is passed around the V-shaped support frame by the long stroke of the air claw B1.4 itself, to clamp the middle part of the rotor workpiece B1.1, thereby achieving fixation.

[0090] The process of positioning the unbalance amount using the rotor clamping and rotating mechanism B0 is as follows: the position of the rotating clamping part B1 in the horizontal direction is adjusted using the positioning driving part, and the vertical height of the rotating clamping part B1 is adjusted using the height adjustment screw B1.11 in the height adjustment assembly, so that the claw clamp chuck B1.2 is directly opposite the rotor workpiece B1.1; under the driving of the external air circuit, the claw clamp chuck B1.2 on the air claw B1.4 clamps the clamping shaft of the rotor workpiece B1.1 away from the support clamp C5, according to the unbalance phase, the claw clamp chuck B1.2 is driven to rotate using the stepping motor B1.7, thereby driving the rotor workpiece B1.1 to rotate, so that the unbalanced area of the rotor workpiece B1.1 is located directly above; The process of positioning the unbalance amount using the belt secondary compression driving mechanism D0 is as follows: the secondary slide D2.3.4 is driven to move to the right using the secondary cylinder D2.3.1 in the secondary compression mechanism D2.3, so that the bottom surface of the first damper D2.7 and the bottom surface of the first hard screw D2.15 are in contact with the top surface of the secondary compression block D2.3.3 at the same time, to achieve secondary compression; the belt is driven to slide using the belt horizontal driving assembly, and the belt drives the rotor workpiece B1.1 to rotate, so that the unbalanced area of the rotor workpiece B1.1 is located directly above. When positioning the unbalance amount, large belt wrap angle secondary compression is used for turning (as shown in Figure 15 The process of positioning the unbalance amount using the belt secondary compression driving mechanism D0 is as follows: the secondary slide D2.3.4 is driven to move to the right using the secondary cylinder D2.3.1 in the secondary compression mechanism D2.3, so that the bottom surface of the first damper D2.7 and the bottom surface of the first hard screw D2.15 are in contact with the top surface of the secondary compression block D2.3.3 at the same time, to achieve secondary compression; the belt is driven to slide using the belt horizontal driving assembly, and the belt drives the rotor workpiece B1.1 to rotate, so that the unbalanced area of the rotor workpiece B1.1 is located directly above. When positioning the unbalance amount, large belt wrap angle secondary compression is used for turning (as shown in

[0091] 5) using the guide rod cylinder E7 to drive the dust cover E4 to descend to the height of the rotor workpiece B1.1, starting the eddy current cooling pipe E1, starting the laser F3, and adjusting the focal length of the laser F3 from the surface of the rotor workpiece B1.1 using the height adjustment lead screw hand wheel on the lifting adjustment module F1, adjusting the power of the laser F3 to the target power, using the laser F3 to perform laser modification on the surface of one side of the rotor workpiece B1.1 in the axial direction, after the laser modification is completed, the laser F3 and the eddy current cooling pipe E1 are turned off; 6) if the laser processing parameters include laser modification parameters for the other end of the rotor workpiece B1.1 in the axial direction, after the other side of the rotor workpiece B1.1 is processed according to steps 4) to 5), step 7) is entered; Otherwise, step 7) is directly entered; 7) the laser modified rotor workpiece is tested for dynamic balance again according to step 2), after the test is completed, the unbalance amount and the unbalance phase of the laser modified rotor workpiece on both sides in the axial direction are obtained, if the unbalance amount of the laser modified rotor workpiece on both sides in the axial direction is less than a preset threshold, the test is qualified, the motor horizontal adjustment plate D2.8 is moved upward on the linear guide rail D2.6 using the lifting cylinder D2.16, the belt on the two-stage lifting belt drive mechanism D2 is raised, and the second cylinder D1.5 is used to drive the slide table mounting plate D1.7 to move backward on the linear guide rail D1.8, the two-stage lifting belt drive mechanism D2 is retreated backward, and the laser modified rotor workpiece is removed; If the unbalance amount of the laser modified rotor workpiece on both sides in the axial direction is greater than or equal to the preset threshold, the test is unqualified, the laser processing parameters are obtained according to the unbalance amount, and the positioning of the unbalance amount is performed according to the unbalance phase, and then step 4) is returned to.

[0092] The laser processing parameters include the number of laser etching N; the laser modification adopts N times of laser etching, each laser etching includes first layer etching and second layer etching performed in sequence, and the scanning line spacing of the first layer etching is greater than the scanning line spacing of the second layer etching; The process of obtaining the laser weight removal curve is specifically: the scanning line spacing of the first layer etching and the scanning line spacing of the second layer etching are obtained in advance through a limited number of experiments; the rotor sample is etched several times using the scanning line spacing of the first layer etching and the scanning line spacing of the second layer etching, and the unbalance amount after each laser etching is tested, the number of laser etching and the corresponding unbalance amount constitute a group of data, and the least square method or other fitting method is used to fit the collected multiple groups of data to obtain the laser weight removal curve.

[0093] In specific implementation, the fitting of the laser weight removal curve is not limited to the least square method.

[0094] It should be noted that the above-mentioned content is not specifically directed to the form of the present application, and equivalent changes made in accordance with the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-precision dynamic balance automatic correction machine based on a laser etching process, characterized in that: The installation reference large base plate (A0) and the rotor clamping rotating mechanism (B0), the measuring mechanism (C0), the belt secondary compression driving mechanism (D0), the lifting profiling dust collection mechanism (E0) and the laser assembly (F0) arranged on the installation reference large base plate (A0); The rotor clamping rotating mechanism (B0) is arranged on one side of the measuring mechanism (C0), and the measuring mechanism (C0) and the rotor clamping rotating mechanism (B0) are respectively movably connected with the axial two ends of the rotor workpiece (B1.1); the measuring mechanism (C0) is used for measuring the unbalance of the rotor workpiece (B1.1), and the rotor clamping rotating mechanism (B0) is used for rotating the rotor workpiece (B1.1) to position the unbalance or fix the rotor workpiece (B1.1) in the process of laser correction; The upper part of the belt secondary compression driving mechanism (D0) extends above the rotor workpiece (B1.1) and is drivingly connected with the rotor workpiece (B1.1) through a belt, thereby driving the rotor workpiece (B1.1) to rotate or rotating the rotor workpiece (B1.1) to position the unbalance; The dust collection part of the lifting profiling dust collection mechanism (E0) is located above the rotor workpiece (B1.1) and is used for dust collection and cooling the rotor workpiece (B1.1) in the process of laser correction; The laser emission part of the laser assembly (F0) is located above the dust collection part of the lifting profiling dust collection mechanism (E0) and is used for laser correction of the rotor workpiece (B1.1).

2. The high-precision automatic balancing machine based on a laser etching process according to claim 1, characterized in that: The measuring mechanism (C0) comprises a tester base (C1), a vibration acquisition sensor (C2), a speed sensor (C3), a tester floating platform (C4) and a support clamp (C5); The tester base (C1), the tester floating platform (C4) and the support clamp (C5) are arranged in sequence from bottom to top, the support clamp (C5) rotatably supports one end of the rotor workpiece (B1.1), the axis of the rotor workpiece (B1.1) is horizontally arranged and can be driven to rotate by the belt secondary compression driving mechanism (D0); The speed sensor (C3) is used for acquiring the rotating speed of the rotor workpiece (B1.1), and the vibration transmission copper rod of the vibration acquisition sensor (C2) is connected with the tester floating platform (C4) and is used for acquiring the vibration of the tester floating platform (C4); The tester base (C1) is fixedly connected with the installation reference large base plate (A0), the tester base (C1) is soft-connected with the tester floating platform (C4) through a plurality of vertically arranged spring rods, and the tester floating platform (C4) is connected with the support clamp (C5).

3. The high-precision automatic balancing machine based on a laser etching process according to claim 1, characterized in that: The belt secondary compression driving mechanism (D0) is located at the rear side of the measuring mechanism (C0) and comprises a horizontal sliding table mechanism (D1) and a secondary lifting belt driving mechanism (D2), the horizontal sliding table mechanism (D1) is used for adjusting the horizontal position of the secondary lifting belt driving mechanism (D2); The secondary lifting belt driving mechanism (D2) comprises a vertical base (D2.18), a belt, a belt horizontal driving assembly, a secondary compression mechanism (D2.3), a first damper (D2.7), a motor horizontal adjusting plate (D2.8), a first hard screw (D2.15), a vertical connecting block (D2.13), a lifting cylinder (D2.16), the vertical base (D2.18) and a vertical mounting plate (D2.19); The belt is in transmission connection with the belt horizontal driving assembly, the belt can rotate the rotor workpiece (B1.1) through sliding driving, and the belt horizontal driving assembly is used for adjusting the horizontal position of the belt and driving the belt; The vertical base (D2.18) is installed on the slide mounting plate (D1.7) of the horizontal slide table mechanism (D1), the vertical base (D2.18) adopts an L-shaped base, the lifting cylinder (D2.16) and the motor horizontal adjusting plate (D2.8) are sequentially arranged on the horizontal arm of the L-shaped base, the lifting cylinder (D2.16) can drive the motor horizontal adjusting plate (D2.8) to vertically reciprocate, the front end of the motor horizontal adjusting plate (D2.8) is provided with the vertical connecting block (D2.13), the vertical connecting block (D2.13) is provided with the first damper (D2.7) and the first hard screw (D2.15); the vertical mounting plate (D2.19) is fixedly installed on the vertical arm of the L-shaped base, the secondary compression mechanism (D2.3) is installed on the vertical mounting plate (D2.19), the secondary compression mechanism (D2.3) is located below the first damper (D2.7) and the first hard screw (D2.15), the secondary compression mechanism (D2.3) comprises a stepped structure, the top surface of the stepped structure has a stepped contact surface, and the stepped structure can reciprocate in the left-right direction, so that the first damper (D2.7) and the first hard screw (D2.15) can abut against any one step of the stepped contact surface.

4. The high-precision automatic balancing machine based on laser etching process according to claim 3, characterized in that: The secondary compression mechanism (D2.3) comprises a secondary cylinder (D2.3.1), a stepped structure, a secondary compression mounting rack (D2.3.5) and a secondary cylinder mounting rack (D2.3.6); The secondary compression mounting rack (D2.3.5) is fixedly connected with the vertical mounting plate (D2.19), one side of the secondary compression mounting rack (D2.3.5) is provided with the secondary cylinder (D2.3.1), the top of the secondary compression mounting rack (D2.3.5) is slidably provided with the stepped structure, the top surface of the stepped structure forms a first contact surface and a second contact surface, the height of the first contact surface is greater than that of the second contact surface, and the secondary cylinder (D2.3.1) can drive the stepped structure to reciprocate leftward and rightward, so that the first contact surface or the second contact surface moves to the position directly below the first damper (D2.7) and the first hard screw (D2.15).

5. The high-precision automatic balancing machine based on laser etching process according to claim 1, characterized in that: The rotor clamping rotating mechanism (B0) comprises a clamping rotating mechanism mounting frame (B11), a rotating clamping component (B1) mounted on the clamping rotating mechanism mounting frame (B11), and a positioning driving component for driving the rotating clamping component (B1) to move in the front-rear and left-right directions; the rotating clamping component (B1) comprises a claw clamp chuck (B1.2), a floating air joint (B1.3), an air claw (B1.4), a claw seat (B1.5), a rotating air joint mounting plate (B1.6), a stepping motor (B1.7), a motor mounting plate (B1.8), and two groups of height adjusting assemblies; The two groups of height adjusting assemblies are arranged on the front side and the rear side of the motor mounting plate (B1.8) respectively, and are used for adjusting the up-down position of the rotating clamping component (B1); the motor mounting plate (B1.8) is provided with the stepping motor (B1.7), the output shaft of the stepping motor (B1.7) is connected with the air claw (B1.4) through the floating air joint (B1.3), the claw seat (B1.5) of the air claw (B1.4) is provided with the claw clamp chuck (B1.2), the claw clamp chuck (B1.2) is used for clamping the rotor workpiece (B1.1), the air claw (B1.4) is connected with the external air path through a rotating air joint, and the rotating air joint is mounted on the rotating air joint mounting plate (B1.6).

6. The high-precision automatic balancing machine based on a laser etching process according to claim 1, characterized in that: The lifting profiled dust collection mechanism (E0) comprises an eddy current cooling pipe (E1), an inclined angle dust collection pipe mounting plate (E2), a dust collection cover mounting plate (E3), a dust collection cover (E4), a blowing transition block (E6), a guide rod air cylinder (E7), and a lifting air cylinder mounting L-shaped frame (E8); The lifting air cylinder mounting L-shaped frame (E8) is mounted on the mounting reference large bottom plate (A0), the guide rod air cylinder (E7) is mounted on the lifting air cylinder mounting L-shaped frame (E8), the top end of the guide rod air cylinder (E7) is a telescopic end, the guide rod air cylinder (E7) is connected with the dust collection cover (E4) through the dust collection cover mounting plate (E3), the dust collection cover (E4) is arranged above the rotor workpiece (B1.1), and the guide rod air cylinder (E7) can drive the dust collection cover mounting plate (E3) and the dust collection cover (E4) to realize vertical reciprocating movement. The eddy current cooling pipe (E1) is used for generating cooling gas, the outlet of the eddy current cooling pipe (E1) is communicated with the inlet of the blowing transition block (E6) through a pipeline, the outlet of the blowing transition block (E6) is communicated with the inside of the dust collection cover (E4) through a bamboo joint pipe, the outlet of the bamboo joint pipe corresponds to the arrangement of the rotor workpiece (B1.1), and the inside of the dust collection cover (E4) is also communicated with the inlet of a dust collection pipe, so that the cooling gas can blow the dust generated by laser modification into the inlet of the dust collection pipe.

7. A rotor correction method using the high-precision automatic balancing correction machine according to any one of claims 1 to 6, characterized by: The method comprises the following steps: Step 1) The rotor workpiece (B1.1) is placed on the measuring mechanism (C0), the horizontal sliding table mechanism (D1) is started, and the secondary lifting belt driving mechanism (D2) is pushed forward until the belt on the secondary lifting belt driving mechanism (D2) moves to the top of the rotor workpiece (B1.1); Step 2) control the belt on the secondary lifting belt drive mechanism (D2) to descend until the belt is in contact with the rotor workpiece (B1.1); make the first damper (D2.7) and the first hard gear screw (D2.15) abut on the first contact surface to realize primary pressing; use the belt horizontal drive assembly to drive the belt to slide, and the belt drives the rotor workpiece (B1.1) to rotate at a preset speed; use the measuring mechanism (C0) to perform dynamic balance test on the rotor workpiece (B1.1); Step 3) after the test is completed, the unbalance amount and the unbalance phase of the two ends of the rotor workpiece (B1.1) are obtained, the unbalance amount is substituted into the pre-obtained laser unbalancing curve to obtain the laser processing parameter; the laser unbalancing curve is a curve of the relationship between the laser processing parameter and the unbalance amount; Step 4) use the rotor clamping and rotating mechanism (B0) or the secondary pressing function of the secondary pressing belt drive mechanism (D0) to position the rotor workpiece (B1.1) according to the unbalance phase; Step 5) lower the dust cover (E4) to the height of the rotor workpiece (B1.1), start the eddy current cooling pipe (E1), adjust the power of the laser (F3) to the target power, and use the laser (F3) to perform laser correction on the rotor workpiece (B1.1); after the laser correction is completed, the laser (F3) and the eddy current cooling pipe (E1) are turned off; Step 6) if the laser processing parameter includes laser correction on the other end of the rotor workpiece (B1.1) in the axial direction, then after the laser correction on the other end of the rotor workpiece (B1.1) in the axial direction is completed according to steps 4-5, step 7 is entered; Otherwise, step 7 is directly entered; Step 7) perform dynamic balance test on the laser-corrected rotor workpiece again according to the step 2; after the test is completed, the unbalance amount and the unbalance phase of the two ends of the laser-corrected rotor workpiece are obtained; If the unbalance amount of the two ends of the laser-corrected rotor workpiece is greater than or equal to a preset threshold, the test is unqualified, the laser processing parameter is obtained according to the unbalance amount, and after positioning the unbalance amount according to the unbalance phase, step 4 is returned to; If the unbalance amount of the two ends of the laser-corrected rotor workpiece is less than the preset threshold, the test is qualified, the belt on the secondary lifting belt drive mechanism (D2) is controlled to rise, and then the secondary lifting belt drive mechanism (D2) is retreated to take out the laser-corrected rotor workpiece.

8. The rotor revision method of claim 7, wherein: The laser processing parameter includes the number of laser etching N; the laser correction adopts N times of laser etching, each laser etching includes first layer etching and second layer etching performed in sequence, and the scanning line spacing of the first layer etching is greater than the scanning line spacing of the second layer etching; The process of obtaining the laser unbalancing curve is as follows: using the pre-set scanning line spacing of the first layer etching and the scanning line spacing of the second layer etching, a rotor sample is etched for several times, and the unbalance amount after each laser etching is tested; a group of data of the number of laser etching and the corresponding unbalance amount is obtained; the collected multiple groups of data are fitted to obtain the laser unbalancing curve.

9. The rotor revision method of claim 7, wherein: In step 4, the rotor clamping rotation mechanism (B0) or the belt-driven two-stage clamping drive mechanism (D0) is selected to locate the imbalance amount depending on whether the rotor workpiece (B1.1) has a clamping shaft. If the rotor workpiece (B1.1) has a clamping shaft, the rotor clamping rotation mechanism (B0) is used to locate the imbalance amount; if the rotor workpiece (B1.1) does not have a clamping shaft, the belt-driven two-stage clamping drive mechanism (D0) is used to locate the imbalance amount. The process of positioning the unbalance using the rotor clamping rotation mechanism (B0) is as follows: Under the drive of the external air circuit, the jaw chuck (B1.2) on the air gripper (B1.4) clamps the clamping shaft of the rotor workpiece (B1.1) away from the support fixture (C5). According to the unbalance phase, the stepper motor (B1.7) drives the jaw chuck (B1.2) to rotate, thereby driving the rotor workpiece (B1.1) to rotate, so that the unbalanced area of ​​the rotor workpiece (B1.1) is located at the top. The process of positioning the imbalance using the belt-driven two-stage clamping mechanism (D0) is as follows: the second-stage cylinder (D2.3.1) in the two-stage clamping mechanism (D2.3) drives the second-stage slider (D2.3.4) to move, so that the first damper (D2.7) and the first hard stop screw (D2.15) abut against the top surface of the second-stage clamping block (D2.3.3) to achieve two-stage clamping; the belt horizontal drive assembly drives the belt to slide, and the belt drives the rotor workpiece (B1.1) to rotate, so that the imbalance area of ​​the rotor workpiece (B1.1) is located at the top.

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