A weight removal machine based on the dynamic balancing mechanism of turbocharger rotor shaft

Abstract

The present invention discloses a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft, comprising a machine base, on the upper surface of which a clamping mechanism, a positioning mechanism, a turbine rotor shaft impeller grinding mechanism and a turbine rotor shaft port grinding mechanism are fixed; the turbine rotor shaft impeller grinding mechanism comprises a first moving unit fixed on the upper surface of the machine base, the first moving unit is used to drive the first grinding unit to reciprocate and grind the turbine rotor shaft impeller; the turbine rotor shaft port grinding mechanism comprises a second moving unit fixed on the upper surface of the machine base, the second moving unit is used to drive the second grinding unit to reciprocate and grind the turbine rotor shaft port; the present invention provides a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft, which can reduce the imbalance amount on the turbine rotor shaft port and impeller of a turbocharger by deweighting, thereby reducing the vibration value during high-speed rotation and improving the stability of the turbine rotor shaft.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic balancing equipment, and in particular to a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft. Background Art

[0002] The turbine rotor shaft is a key part of the turbocharger, and its operating speed is generally as high as tens of thousands of revolutions per minute, or even more than 200,000 revolutions per minute. Due to the unevenness of the turbine material, defects in the blank, processing and assembly errors or uneven wear, it is inevitable that the mass distribution is uneven, resulting in imbalance, the displacement of the center of mass, and the inconsistency between the main axis of inertia and the main axis of rotation, which leads to centrifugal force. Since the magnitude of the centrifugal force is proportional to the square of the angular velocity, that is, the higher the speed of the mechanical equipment, the greater the vibration caused by the same imbalance. Therefore, for the turbine rotor working at high speed, even a small imbalance may cause greater vibration and noise, accelerate the wear of bearings and sealing parts, reduce the efficiency of the supercharger, affect the working performance and accuracy of the equipment, shorten the service life, and even affect the quality of the product. In severe cases, it will cause the turbine to collide with the housing, resulting in the breakage and damage of the rotating parts of the machine. In order to ensure the reliability of the turbocharger, the turbine rotor must be dynamically balanced.

[0003] As the core component of the supercharger, the imbalance of the supercharger rotor will cause greater vibration and noise during high-speed rotation, which will directly lead to wear of the floating bearing, thrust bearing and even sealing parts, reducing the service life of the supercharger and burying hidden dangers for safe driving. High-speed dynamic balancing is a detection method and processing method that reduces the vibration value of the workpiece during high-speed rotation and vibration wear by measuring the imbalance and making corrections. At present, some small and medium-sized enterprises often measure the size and direction of the imbalance of the turbine rotor on a dynamic balancing measuring machine, and then manually use an ordinary drilling machine to remove weight and correct it. The error is very large, and it needs to be repeatedly detected and corrected. The balancing process cycle is long, the efficiency is low, and the accuracy is poor. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a deweighting machine based on the dynamic balancing mechanism of the turbocharger rotor shaft, which can perform single-piece dynamic balancing on the turbine rotor shaft port and the turbine rotor shaft impeller of a turbocharger, reduce the imbalance by deweighting the turbine rotor shaft port and the impeller, thereby reducing the vibration value during high-speed rotation, reducing the difficulty of overall dynamic balancing correction, and improving the stability of the turbine rotor shaft.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft, which is characterized by comprising:

[0007] Machine base;

[0008] The clamping and positioning mechanism comprises: a clamping mechanism fixed to the upper surface of the base and used to clamp one end of the turbine rotor shaft; a positioning mechanism fixed to the upper surface of the base and used to press against the other end of the turbine rotor shaft;

[0009] The turbine rotor shaft impeller grinding mechanism comprises a first moving unit fixed to the upper surface of the machine base, the moving direction of the first moving unit is inclined at an angle relative to the axis of the turbine rotor shaft, the moving part of the first moving unit is connected to the first grinding unit, and the first moving unit drives the first grinding unit to reciprocate between a grinding position for grinding the turbine rotor shaft impeller and a retreat position retreating from the grinding position;

[0010] The turbine rotor shaft port grinding mechanism includes a second movable unit fixed on the upper surface of the machine base, the movable part of the second movable unit is connected to the second grinding unit, and the second movable unit drives the second grinding unit to reciprocate between a grinding position for grinding the turbine rotor shaft port and a retreat position retreating from the grinding position.

[0011] The first grinding unit comprises:

[0012] First grinding wheel;

[0013] The first motor has an output shaft connected to the center of the first grinding wheel and is used to drive the first grinding wheel to rotate and grind the turbine rotor shaft impeller.

[0014] The first moving unit comprises:

[0015] A first workbench, fixed on the upper surface of the machine base;

[0016] A first slide is slidably connected to the first workbench through a sliding mechanism; the first motor is fixed on the upper surface of the first slide;

[0017] The first ball screw mechanism is located in a groove opened on the first workbench. The first ball screw mechanism is used to drive the first slide and the first grinding unit fixed on the upper surface of the first slide to reciprocate along the first workbench between a grinding position for grinding the impeller of the turbine rotor shaft and a retreat position for retreating from the grinding position; the direction in which the first slide reciprocates along the first workbench is inclined at an angle relative to the axis of the turbine rotor shaft.

[0018] The second grinding unit comprises:

[0019] Second grinding wheel;

[0020] The second motor has an output shaft connected to the center of the second grinding wheel and is used to drive the second grinding wheel to rotate and grind the turbine rotor shaft port.

[0021] The second mobile unit comprises:

[0022] A second workbench, fixed to the upper surface of the machine base;

[0023] A second slide table, slidably connected to the second workbench via a sliding mechanism;

[0024] A third workbench, fixed on the upper surface of the second slide;

[0025] A third slide is slidably connected to the third workbench through a sliding mechanism; the second motor is fixed on the upper surface of the third slide;

[0026] A second ball screw mechanism is located in a groove provided on the second workbench, and the second ball screw mechanism is used to drive the second slide table to move back and forth along the second workbench;

[0027] A third ball screw mechanism is located in a groove provided on the third workbench, and the third ball screw mechanism is used to drive the third slide table to move back and forth along the third workbench;

[0028] The third ball screw mechanism cooperates with the second ball screw mechanism to drive the second grinding unit fixed on the upper surface of the third slide table to reciprocate between a grinding position for grinding the turbine rotor shaft port and a retreat position retreating from the grinding position.

[0029] The above-mentioned clamping mechanism comprises:

[0030] A first support base, fixed to the upper surface of the base;

[0031] A three-jaw chuck for clamping one end of the turbine rotor shaft;

[0032] A rotary spindle, which traverses the first support seat and one end of which is connected to the three-jaw chuck;

[0033] The driving member is fixed on the first supporting seat, and its output shaft is connected to the other end of the rotating main shaft. The driving member drives the rotating main shaft and the three-jaw chuck to rotate synchronously. The rotation of the three-jaw chuck drives the turbine rotor shaft to rotate to realize circumferential grinding of the turbine rotor shaft impeller and the turbine rotor shaft port.

[0034] The above positioning mechanism comprises:

[0035] A second support base, fixed to the upper surface of the base;

[0036] A fourth workbench, transversely fixed to the upper surface of the second support seat;

[0037] a fourth slide table, slidably connected to the fourth workbench via a sliding mechanism;

[0038] A first positioning plate, fixed to the upper surface of the fourth slide;

[0039] A second positioning plate is also fixed on the upper surface of the fourth slide;

[0040] A connecting rod, one end of which transversely passes through the first positioning plate and the second positioning plate;

[0041] A sleeve, one end of which is fixedly connected to an end of the connecting rod close to the three-jaw chuck;

[0042] A positioning top is fixed at the other end of the sleeve;

[0043] The fourth ball screw mechanism is located in the groove opened in the fourth workbench. The fourth ball screw mechanism is used to drive the fourth slide to move laterally to the left along the fourth workbench. The fourth slide moves laterally to the left to drive the positioning top to press against one end of the turbine rotor shaft. The fourth ball screw mechanism is also used to drive the fourth slide to move laterally to the right along the fourth workbench to drive the positioning top away from one end of the turbine rotor shaft.

[0044] A first dressing unit for dressing the first grinding wheel is fixed on the upper surface of the first slide, and the first dressing unit comprises:

[0045] A fifth workbench, longitudinally fixed on the upper surface of the first slide;

[0046] a fifth slide table, slidably connected to the fifth workbench via a sliding mechanism;

[0047] A third motor is fixed on one side of the fifth slide;

[0048] A third grinding wheel, the center of which is connected to the output shaft of the third motor, and the third motor drives the third grinding wheel to rotate at high speed;

[0049] The fifth ball screw mechanism is located in the groove opened on the fifth workbench. The fifth ball screw mechanism is used to drive the fifth slide to move downward along the fifth workbench. The downward movement of the fifth slide drives the third grinding wheel to approach the first grinding wheel to realize grinding and trimming of the first grinding wheel.

[0050] A second grinding unit for grinding a second grinding wheel is fixed on the upper surface of the third slide, and the second grinding unit includes:

[0051] Fourth grinding wheel;

[0052] The fourth motor is fixed on the upper surface of the second slide, and the output shaft of the fourth motor is connected to the center of the fourth grinding wheel to drive the fourth grinding wheel to rotate at high speed. When the second grinding wheel moves to contact the fourth grinding wheel, the fourth grinding wheel rotates at high speed to achieve grinding and dressing of the second grinding wheel.

[0053] The beneficial effects of the present invention are:

[0054] 1. The present invention provides a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft, which performs single-piece dynamic balancing on the turbine rotor shaft port and the turbine rotor shaft impeller of the turbocharger, reduces the imbalance amount by deweighting the turbine rotor shaft port and the impeller, thereby reducing the vibration value during high-speed rotation, reducing the difficulty of overall dynamic balancing correction, and improving the stability of the turbine rotor shaft.

[0055] 2. The present invention is also provided with a first dressing unit for grinding and dressing the first grinding wheel and a second dressing unit for grinding and dressing the second grinding wheel. When the first grinding wheel is worn, the third grinding wheel of the first dressing unit is used to grind and dress the first grinding wheel. When the second grinding wheel is worn, the fourth grinding wheel of the second dressing unit is used to grind and dress the second grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A three-dimensional schematic diagram of the overall structure provided by an embodiment of the present invention;

[0058] Figure 2 A schematic top view of the overall structure provided by an embodiment of the present invention;

[0059] Figure 3 A schematic front view of the overall structure provided by an embodiment of the present invention;

[0060] Figure 4 It is a schematic structural diagram of the turbine rotor shaft of the present invention.

[0061] Explanation of the accompanying drawings: 1. machine base; 2. turbine rotor shaft; 3. first grinding wheel; 4. first motor; 5. first workbench; 6. first slide; 7. second grinding wheel; 8. second motor; 9. second workbench; 10. second slide; 11. third workbench; 12. third slide; 13. first supporting seat; 14. three-jaw chuck; 15. rotating spindle; 16. driving member; 17. second supporting seat; 18. fourth workbench; 19. fourth slide; 20. first positioning plate; 21. second positioning plate; 22. connecting rod; 23. sleeve; 24. positioning center; 25. fifth workbench; 26. fifth slide; 27. third motor; 28. third grinding wheel; 29. ​​fourth grinding wheel; 30. fourth motor. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] Embodiment 1:

[0064] like Figure 1-Figure 3 As shown, a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft proposed in an embodiment of the present invention comprises a machine base 1, a clamping mechanism for clamping one end of a turbine rotor shaft 2 and driving the turbine rotor shaft 2 to rotate is fixed on the upper surface of the machine base 1, a positioning mechanism for tightening the other end of the turbine rotor shaft 2 is fixed on the upper surface of the machine base 1; a turbine rotor shaft impeller grinding mechanism is also fixed on the machine base 1, and the turbine rotor shaft impeller grinding mechanism comprises a first moving unit fixed on the upper surface of the machine base 1, the moving direction of the first moving unit is inclined at an angle relative to the axis of the turbine rotor shaft, and the first The moving part of the moving unit is connected to the first grinding unit, and the first moving unit drives the first grinding unit to reciprocate between the grinding position for grinding the turbine rotor shaft impeller and the retreat position for retreating from the grinding position; a turbine rotor shaft port grinding mechanism is also fixed on the machine base 1, and the turbine rotor shaft port grinding mechanism includes a second moving unit fixed on the upper surface of the machine base 1, and the moving part of the second moving unit is connected to the second grinding unit, and the second moving unit drives the second grinding unit to reciprocate between the grinding position for grinding the turbine rotor shaft port and the retreat position for retreating from the grinding position.

[0065] When in use, the present invention clamps one end of the turbine rotor shaft 2 with a clamping mechanism, and tightens the other end of the turbine rotor shaft 2 with a positioning mechanism. At this time, the clamping mechanism is started to drive the turbine rotor shaft 2 to rotate at a high speed, and the first moving unit is started. The first moving unit drives the first grinding unit to move to the grinding position of the turbine rotor shaft impeller to grind the impeller of the turbine rotor shaft. After grinding, the first moving unit drives the first grinding unit to retreat from the grinding position of the turbine rotor shaft impeller to the retreat position. After the impeller grinding is completed, the second moving unit is started. The second moving unit drives the second grinding unit to move to the grinding position of the turbine rotor shaft port to grind the port of the turbine rotor shaft. After grinding, the second moving unit drives the second grinding unit to retreat from the grinding position of the turbine rotor shaft port to the retreat position.

[0066] Embodiment 2:

[0067] This embodiment is based on Embodiment 1, wherein the first grinding unit includes a first grinding wheel 3, the center of the first grinding wheel 3 is connected to the output shaft of a first motor 4, and the first motor 4 is used to drive the first grinding wheel 3 to rotate at high speed to grind the turbine rotor shaft impeller.

[0068] Further, the first moving unit includes a first workbench 5 fixed to the upper surface of the machine base 1, a first slide 6 is provided on the first workbench 5 and is slidably connected to the first workbench 5 through a sliding mechanism, the upper surface of the first slide 6 is fixedly connected to the first motor 4 of the first grinding unit, the outer shell of the first motor 4 of the first grinding unit is fixed to the upper surface of the first slide 6, the first motor 4 is a high-speed motor, and the high-speed motor drives the first grinding wheel 3 to rotate at a high speed; a first ball screw mechanism is provided in the groove opened by the first workbench 5, and the first ball screw mechanism is a ball screw mechanism used for machine tool feeding in the prior art;

[0069] Among them, the first ball screw mechanism is used to drive the first slide 6 and the first grinding unit fixed on the upper surface of the first slide 6 to reciprocate along the first worktable 5 between the grinding position for grinding the turbine rotor shaft impeller and the retreat position retreating from the grinding position, the first slide 6 drives the high-speed rotating first grinding wheel 3 to move to the grinding position of the turbine rotor shaft impeller to grind the impeller of the turbine rotor shaft, and after grinding, the first slide 6 drives the high-speed rotating first grinding wheel 3 to retreat from the grinding position of the turbine rotor shaft impeller to the retreat position; in the present invention, the first slide 6 is inclined at an angle relative to the axis of the turbine rotor shaft along the direction of the horizontal reciprocating movement of the first worktable 5, and the specific inclination angle is determined according to practice. The grinding angle between the first grinding wheel 3 and the workpiece is determined according to practice, and then the inclination angle of the first worktable 5 relative to the axis of the turbine rotor shaft is determined.

[0070] Embodiment 3:

[0071] This embodiment is based on embodiment 1, wherein the second grinding unit includes a second grinding wheel 7, the center of the second grinding wheel 7 is connected to the output shaft of a second motor 8, and the second motor 8 is used to drive the second grinding wheel 7 to rotate at high speed to grind the turbine rotor shaft port.

[0072] Further, the second moving unit includes a second worktable 9 fixed on the upper surface of the machine base 1, the second worktable 9 is slidably connected to the second slide 10 through a sliding mechanism, a groove is opened inside the second worktable 9, and a second ball screw mechanism is provided in the groove opened in the second worktable 9 for driving the second slide 10 to reciprocate left and right along the second worktable 9, and the second ball screw mechanism selects the ball screw mechanism used for machine tool feeding in the prior art; a third worktable 11 is also fixed on the upper surface of the second slide 10, the third worktable 11 is connected to the third slide 12 through a sliding mechanism, and the upper surface of the third slide 12 is fixedly connected to the second motor 8 of the second grinding unit, the second motor 8 selects a high-speed motor, and the high-speed motor drives the second grinding wheel 7 to rotate at a high speed, the outer shell of the second motor 8 is fixed on the upper surface of the third slide 12, and a third ball screw mechanism is provided in the groove opened in the third worktable 11, and the third ball screw mechanism selects the ball screw mechanism used for machine tool feeding in the prior art, and the third ball screw mechanism drives the third slide 12 to reciprocate back and forth along the third worktable 11. The third ball screw mechanism cooperates with the second ball screw mechanism to drive the third slide 12 to move left and right and forward and backward at the same time. The third slide 12 drives the second motor 8 and the second grinding wheel 7 fixed on the output shaft of the second motor 8 to move to the grinding position of the turbine rotor shaft port to grind the port of the turbine rotor shaft. After grinding, the third slide 12 drives the second grinding wheel 7 to retreat from the grinding position of the turbine rotor shaft port to the retreat position.

[0073] Embodiment 4:

[0074] This embodiment is based on embodiment 1, and the clamping mechanism includes a first support seat 13 fixed on the upper surface of the machine base 1, and a rotating main shaft 15 is provided on the first support seat 13 and runs through it, and one end of the rotating main shaft 15 is connected to the three-jaw chuck 14, and the other end of the rotating main shaft 15 is connected to a driving member 16 fixed on the first support seat 13, and the output shaft of the driving member 16 is connected to the rotating main shaft 15, and the driving member 16 selects a high-speed rotating motor, and the motor drives the rotating main shaft 15 to rotate at a high speed, and the high-speed rotation of the rotating main shaft 15 drives the three-jaw chuck 14 to rotate at a high speed, and the three-jaw chuck 14 clamps a sleeve for fixing one end of the turbine rotor shaft 2, and the three-jaw chuck 14 drives the sleeve to rotate at a high speed, and the high-speed rotation of the sleeve drives the turbine rotor shaft 2 to rotate at a high speed to realize circumferential grinding of the impeller of the turbine rotor shaft 2 and the port of the turbine rotor shaft 2.

[0075] Embodiment 5:

[0076] This embodiment is based on embodiment 1, and the positioning mechanism includes a second support seat 17 fixed on the upper surface of the machine base 1, and a fourth workbench 18 is fixed on the upper surface of the second support seat 17. The fourth workbench 18 is provided with a fourth slide 19 slidably connected to it through a sliding mechanism, and the upper surface of the fourth slide 19 is also fixed with a first positioning plate 20 and a second positioning plate 21. The first positioning plate 20 and the second positioning plate 21 are provided with a connecting rod 22 that runs horizontally therethrough, one end of the connecting rod 22 is clamped between the first positioning plate 20 and the second positioning plate 21, and the other end of the connecting rod 22 is fixedly connected to the positioning top 24, and a fourth ball screw mechanism is provided in the groove opened by the fourth workbench 18. The fourth ball screw mechanism drives the fourth slide 19 to move back and forth along the fourth workbench 18, and the fourth slide 19 moves horizontally to the left along the fourth workbench 18 to drive the positioning top 24 to press against one end of the turbine rotor shaft 2, and the fourth ball screw mechanism is also used to drive the fourth slide 19 to move horizontally to the right along the fourth workbench 18 to drive the positioning top 24 away from one end of the turbine rotor shaft 2.

[0077] Embodiment 6:

[0078] This embodiment is based on Embodiment 1, wherein a first dressing unit for dressing the first grinding wheel 3 is fixed on the upper surface of the first slide 6, and the first dressing unit includes a fifth worktable 25 longitudinally fixed on the upper surface of the first slide 6, the fifth worktable 25 and the fifth slide 26 are longitudinally slidably connected by a sliding mechanism, the fifth slide 26 slides up and down along the fifth worktable 25, one side of the fifth slide 26 is fixedly connected to the outer shell of the third motor 27, the output shaft of the third motor 27 is connected to the center of the third grinding wheel 28, the third motor 27 selects a high-speed rotating motor to drive the third grinding wheel 28 to rotate at a high speed, and a fifth ball screw mechanism is provided in the groove opened by the fifth worktable 25, the fifth ball screw mechanism is used to drive the fifth slide 26 to move up and down along the fifth worktable 25, when the fifth slide 26 moves downward along the fifth worktable 25, it drives the third grinding wheel 28 close to the first grinding wheel 3 to realize grinding and dressing of the first grinding wheel 3, when the grinding of the first grinding wheel 3 is completed, the fifth slide 26 moves upward along the fifth worktable 25, drives the third grinding wheel 28 away from the first grinding wheel 3.

[0079] Furthermore, a second dressing unit for grinding the second grinding wheel 7 is fixed on the upper surface of the third slide 12, and the second dressing unit includes a fourth motor 30 fixed on the upper surface of the second slide 10. The fourth motor 30 is a high-speed motor, and the output shaft of the fourth motor 30 is connected to the center of the fourth grinding wheel 29 to drive the fourth grinding wheel 29 to rotate at high speed; wherein the second dressing unit reciprocates left and right along the second workbench 9 with the second slide 10, and when the third slide 12 drives the second motor 8 and the second grinding wheel 7 fixed on the upper surface of the third slide 12 to approach the fourth grinding wheel 29, the fourth grinding wheel 29 grinds and dresses the second grinding wheel 7, and after the grinding and dressing is completed, the third slide 12 drives the second motor 8 and the second grinding wheel 7 fixed on the upper surface of the third slide 12 away from the fourth grinding wheel 29.

[0080] Working principle of the present invention:

[0081] The present invention provides a deweighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft, which performs single-piece dynamic balancing on a turbine rotor shaft port and a turbine rotor shaft impeller of a turbocharger, and reduces the unbalance amount by deweighting the turbine rotor shaft port and the impeller.

[0082] When in use, one end of the turbine rotor shaft 2 is first clamped by the three-claw chuck 14 of the clamping mechanism, and then the fourth ball screw mechanism of the positioning mechanism is started, and the fourth ball screw mechanism drives the fourth slide 19 to move laterally along the fourth workbench 18. The lateral movement of the fourth slide 19 drives the positioning top 24 fixed on its upper surface to move laterally to tighten the other end of the turbine rotor shaft 2.

[0083] After the position of the turbine rotor shaft 2 is fixed, the driving member 16 of the clamping mechanism is started, and the driving member 16 selects a high-speed rotating motor, and the motor drives the three-jaw chuck 14 and the turbine rotor shaft 2 to rotate at a high speed. At this time, the first ball screw mechanism of the first moving unit is started, and the first ball screw mechanism drives the first slide 6 and the first grinding unit fixed on the upper surface of the first slide 6 to reciprocate along the first workbench 5 between the grinding position for grinding the turbine rotor shaft impeller and the retreat position for retreating from the grinding position. The first slide 6 drives the high-speed rotating first grinding wheel 3 to move to the grinding position of the turbine rotor shaft impeller to grind the impeller of the turbine rotor shaft. After grinding, the first slide 6 drives the high-speed rotating first grinding wheel 3 to retreat from the grinding position of the turbine rotor shaft impeller to the retreat position; in the present invention, the first slide 6 is inclined at an angle relative to the axis of the turbine rotor shaft along the direction of the horizontal reciprocating movement of the first workbench 5. The specific inclination angle is determined according to practice. The grinding angle between the first grinding wheel 3 and the workpiece is determined according to practice, and then the inclination angle of the first workbench 5 relative to the axis of the turbine rotor shaft is determined.

[0084] At the same time, the third ball screw mechanism and the second ball screw mechanism are also started, and the third ball screw mechanism drives the third slide 12 to move back and forth along the third workbench 11, and the third ball screw mechanism cooperates with the second ball screw mechanism to drive the third slide 12 to move left and right while also moving back and forth, and the third slide 12 drives the second motor 8 and the second grinding wheel 7 fixed on the output shaft of the second motor 8 to move to the grinding position of the turbine rotor shaft port to grind the port of the turbine rotor shaft, and after grinding, the third slide 12 drives the second grinding wheel 7 to retreat from the grinding position of the turbine rotor shaft port to the retreat position.

[0085] In summary, the present invention provides a deweighting machine based on the dynamic balancing mechanism of the turbocharger rotor shaft, which performs single-piece dynamic balancing on the turbine rotor shaft port and the turbine rotor shaft impeller of a turbocharger, reduces the imbalance by deweighting the turbine rotor shaft port and the impeller, thereby reducing the vibration value during high-speed rotation, reducing the difficulty of overall dynamic balancing correction, and improving the stability of the turbine rotor shaft.

[0086] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A de-weighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft, characterized in that: include: Machine base (1); The clamping and positioning mechanism comprises: a clamping mechanism fixed to the upper surface of the machine base (1) and used to clamp one end of the turbine rotor shaft (2); a positioning mechanism fixed to the upper surface of the machine base (1) and used to press against the other end of the turbine rotor shaft (2), the clamping mechanism comprising: A first support base (13) fixed on the upper surface of the machine base (1); A three-jaw chuck (14) for clamping one end of the turbine rotor shaft (2); A rotary spindle (15) that traverses the first support seat (13) and has one end connected to the three-jaw chuck (14); A driving member (16) is fixed on the first support seat (13), and its output shaft is connected to the other end of the rotating main shaft (15), the driving member (16) drives the rotating main shaft (15) and the three-jaw chuck (14) to rotate synchronously, and the rotation of the three-jaw chuck (14) drives the turbine rotor shaft (2) to rotate to achieve circumferential grinding of the impeller of the turbine rotor shaft (2) and the port of the turbine rotor shaft (2); A turbine rotor shaft impeller grinding mechanism comprises a first moving unit fixed to the upper surface of the machine base (1), the moving direction of the first moving unit being inclined at an angle relative to the axis of the turbine rotor shaft, the moving portion of the first moving unit being connected to the first grinding unit, the first moving unit driving the first grinding unit to move back and forth between a grinding position for grinding the turbine rotor shaft impeller and a retreat position for retreating from the grinding position, the first grinding unit comprising: a first grinding wheel (3) and a first motor (4), the output shaft of the first motor (4) being connected to the center of the first grinding wheel (3) for driving the first grinding wheel (3) to rotate and grind the turbine rotor shaft impeller; A turbine rotor shaft end grinding mechanism comprises a second moving unit fixed to the upper surface of the machine base (1), the moving part of the second moving unit being connected to the second grinding unit, the second moving unit driving the second grinding unit to move back and forth between a grinding position for grinding the turbine rotor shaft end and a retreat position retreating from the grinding position, the second grinding unit comprising: a second grinding wheel (7) and a second motor (8), the output shaft of the second motor (8) being connected to the center of the second grinding wheel (7) for driving the second grinding wheel (7) to rotate and grind the turbine rotor shaft end.

2. A de-weighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft as claimed in claim 1, characterized in that: The first mobile unit comprises: A first workbench (5) fixed on the upper surface of the machine base (1); A first slide (6) is slidably connected to the first workbench (5) via a sliding mechanism; the first motor (4) is fixed on the upper surface of the first slide (6); The first ball screw mechanism is located in a groove formed in the first worktable (5), and is used to drive the first slide table (6) and the first grinding unit fixed on the upper surface of the first slide table (6) to move back and forth along the first worktable (5) between a grinding position for grinding the turbine rotor shaft impeller and a retreat position for retreating from the grinding position; the first slide table (6) is tilted at an angle relative to the axis of the turbine rotor shaft in the direction of the reciprocating movement of the first worktable (5).

3. A de-weighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft as claimed in claim 1, characterized in that: The second mobile unit comprises: A second workbench (9) fixed on the upper surface of the machine base (1); A second slide table (10) is slidably connected to the second workbench (9) via a sliding mechanism; a third workbench (11), fixed on the upper surface of the second slide table (10); A third slide table (12) is slidably connected to the third workbench (11) via a sliding mechanism; the second motor (8) is fixed on an upper surface of the third slide table (12); A second ball screw mechanism is located in a groove formed in the second workbench (9), the second ball screw mechanism being used to drive the second slide table (10) to move back and forth along the second workbench (9); A third ball screw mechanism is located in a groove provided in the third workbench (11), and the third ball screw mechanism is used to drive the third slide table (12) to move back and forth along the third workbench (11); The third ball screw mechanism cooperates with the second ball screw mechanism to drive the second grinding unit fixed on the upper surface of the third slide (12) to move back and forth between a grinding position for grinding the turbine rotor shaft port and a retreat position retreating from the grinding position.

4. A de-weighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft as claimed in claim 1, characterized in that: The positioning mechanism comprises: A second support base (17) fixed to the upper surface of the machine base (1); A fourth workbench (18) is transversely fixed on the upper surface of the second support seat (17); a fourth slide table (19) slidably connected to the fourth workbench (18) via a sliding mechanism; A first positioning plate (20) fixed on the upper surface of the fourth slide table (19); A second positioning plate (21) is also fixed on the upper surface of the fourth slide table (19); A connecting rod (22), one end of which transversely passes through the first positioning plate (20) and the second positioning plate (21); A sleeve (23), one end of which is fixedly connected to an end of the connecting rod (22) close to the three-jaw chuck (14); A positioning tip (24) fixed to the other end of the sleeve (23); The fourth ball screw mechanism is located in a groove formed in the fourth worktable (18). The fourth ball screw mechanism is used to drive the fourth slide table (19) to move laterally to the left along the fourth worktable (18). The fourth slide table (19) moves laterally to the left to drive the positioning top (24) to press against one end of the turbine rotor shaft (2). The fourth ball screw mechanism is also used to drive the fourth slide table (19) to move laterally to the right along the fourth worktable (18) to drive the positioning top (24) away from one end of the turbine rotor shaft (2).

5. A de-weighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft as claimed in claim 1, characterized in that: A first dressing unit for dressing the first grinding wheel (3) is fixed on the upper surface of the first slide (6), wherein the first dressing unit comprises: A fifth workbench (25) is longitudinally fixed to the upper surface of the first slide table (6); a fifth sliding table (26) slidably connected to the fifth working table (25) via a sliding mechanism; A third motor (27) fixed on one side of the fifth slide table (26); A third grinding wheel (28), the center of which is connected to the output shaft of the third motor (27), and the third motor (27) drives the third grinding wheel (28) to rotate at a high speed; A fifth ball screw mechanism is located in a groove formed in the fifth workbench (25). The fifth ball screw mechanism is used to drive the fifth slide table (26) to move downward along the fifth workbench (25). The fifth slide table (26) moves downward to drive the third grinding wheel (28) to approach the first grinding wheel (3) to achieve grinding and trimming of the first grinding wheel (3).

6. A de-weighting machine based on the dynamic balancing mechanism of a turbocharger rotor shaft as claimed in claim 3, characterized in that: A second dressing unit for grinding the second grinding wheel (7) is fixed on the upper surface of the third slide (12), and the second dressing unit comprises: Fourth grinding wheel (29); A fourth motor (30) is fixed on the upper surface of the second slide (10), and an output shaft of the fourth motor (30) is connected to the center of the fourth grinding wheel (29) to drive the fourth grinding wheel (29) to rotate at a high speed. When the second grinding wheel (7) moves to contact the fourth grinding wheel (29), the fourth grinding wheel (29) rotates at a high speed to grind and trim the second grinding wheel (7).

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