An end face runout processing apparatus and method for a turbocharged motor seat blade wheel assembly

Abstract

The application discloses a kind of end face run-out processing equipment and method of turbocharged motor seat impeller assembly, including rack, rack includes first panel, support base plate, several support columns;Motor seat impeller assembly placement seat is equipped with first support on first panel, and first support bottom is equipped with jacking mechanism, and jacking mechanism is used to jacking motor seat impeller assembly placement seat;First photoelectric distance measuring sensor, second photoelectric distance measuring sensor, for detecting the end face run-out of the bottom surface of motor seat impeller assembly and the end face run-out value of "concave letter shape" keyway position of motor driving shaft;Second panel, second panel bottom is equipped with six-degree-of-freedom platform electric cylinder unit connected with support base plate;Clamping and compacting composite mechanism arranged on second panel is used to clamp or clamp and compact motor seat impeller assembly;Third photoelectric distance measuring sensor for measuring the upper end face run-out of motor seat impeller assembly, and milling cutter disc, the equipment integrates measurement and cutting processing integration.

Description

Technical Field

[0001] This invention relates to the field of turbocharger motor component processing technology, and in particular to a processing device and method for end face runout of the impeller assembly of a turbocharger motor. Background Technology

[0002] The impeller assembly of the motor mount is a core component of the air turbocharger motor mount. Figures 1 to 4 When the impeller of the motor mount impeller assembly rotates circumferentially driven by the motor, the end face runout generated by the upper edge of its impeller casing (the impeller and the impeller casing are ultrasonically welded) must meet certain parameter values, such as within 0.20 for reference A. Figure 5 As shown), reference A is a reference plane perpendicular to the axis of the motor's main shaft (drive shaft) at the location of the "U-shaped" keyway. This reference plane serves two purposes: first, as a design reference for the motor itself, and as an assembly and inspection reference during motor manufacturing; second, as a positioning and assembly reference when assembling the drive motor with the impeller and impeller casing. Based on satisfying reference A, the upper end of the impeller casing must meet a G value, that is, the gap G between the upper end face of the impeller casing and the turbine casing opening is 0.50 ± 0.25 mm. Figure 4 (As shown at point W). When the G value relative to the A reference is less than the lower limit of 0.5-0.25mm, under high-speed rotation, the upper end face of the impeller outer cover will have the opportunity to rub against the lower end face of the turbine cover, which is the stator. This will generate continuous product noise or even howling, thereby greatly reducing the product's lifespan and user experience.

[0003] Conversely, when the G value relative to the A benchmark fails to meet the requirement and exceeds the upper limit of 0.5 + 0.25 mm, under high-speed rotation, the upper end face of the impeller outer cover may form an excessively large airflow channel with the lower end face of the turbine cover, which serves as the stator. This will affect the turbocharging effect of the design and further reduce the functional parameters of the product, thus affecting its quality.

[0004] The current practice involves measuring the initial end-face runout of a single impeller casing component using an end-face runout measuring device, and then finely machining the end-face runout using a cutting device to achieve the required specifications before further assembly with other motor housing components. The drawback is that processing through two different equipment steps introduces a secondary clamping process, leading to inaccurate positioning and further exacerbating the end-face runout cutting inaccurate issues caused by this secondary positioning. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide an end face runout machining device and method for a vortex booster motor impeller assembly. It can perform initial end face runout detection and end face runout cutting machining on the same machine in the form of an assembled component, ensuring the actual A reference parameter and the actual detected G value of the motor impeller assembly, and achieving accurate machining of the end face runout of the assembled component. This solves the problem of inaccurate end face runout cutting machining of impeller outer casing in the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution disclosed in this invention is as follows:

[0007] A machine for machining the end face runout of a vortex booster motor impeller assembly, comprising:

[0008] The frame includes a first panel, a supporting base plate disposed below the first panel, and a plurality of supporting columns disposed between the first panel and the supporting base plate;

[0009] The motor mount impeller assembly placement seat has a cutout on the first panel, a first bracket on the cutout, a first through hole in the center of the first bracket facing the bottom of the motor mount impeller assembly placement seat, and a lifting mechanism at the bottom of the first bracket for lifting the motor mount impeller assembly placement seat.

[0010] Both the first photoelectric ranging sensor and the second photoelectric ranging sensor are mounted on the first bracket. The first photoelectric ranging sensor is used to detect the end face runout data of the bottom surface of the motor mount impeller assembly, and the second photoelectric ranging sensor is used to detect the end face runout data of the "U-shaped" keyway position at the lower end of the motor drive shaft of the motor mount impeller assembly.

[0011] The second panel is located above the cutout of the first panel. The second panel has clearance holes corresponding to the motor mount impeller assembly placement position. The bottom of the second panel has a six-degree-of-freedom platform electric cylinder unit connected to the support base plate.

[0012] A clamping and pressing composite mechanism is provided on the second panel and is used to clamp and press the motor seat impeller assembly.

[0013] The third photoelectric ranging sensor is used to detect the end face runout data of the upper end face of the motor mount impeller assembly;

[0014] The milling cutter is used to cut the upper surface of the motor mount impeller assembly.

[0015] Preferably, the lifting mechanism is a lifting cylinder, and an "L"-shaped mounting bracket is provided at the bottom of the first bracket to fix the lifting cylinder. The piston lifting component of the lifting cylinder passes through the first through hole and is used to move the impeller assembly placement seat of the lifting motor seat.

[0016] Preferably, the clamping and pressing composite mechanism includes a slide rail on the second panel, a first slider group and a second slider group on the slide rail, a first clamping plate on the first slider group, and a second clamping plate on the second slider group. The second panel is provided with a clamping drive unit that drives the first clamping plate and the second clamping plate to open and close horizontally. The first clamping plate and the second clamping plate are respectively provided with a first mounting port and a second mounting port penetrating the plate surface. A first pneumatic slide table and a second pneumatic slide table are vertically installed in the first mounting port and the second mounting port, respectively. The first pneumatic slide table and the second pneumatic slide table are respectively provided with a first clamping arm and a second clamping arm that clamp towards each other and move up and down.

[0017] Preferably, the clamping drive unit includes a first push cylinder and a second push cylinder. The piston rods of the first push cylinder and the second push cylinder are respectively connected to a first connecting rod and a second connecting rod. The first connecting rod is connected to a first clamping plate, and the second connecting rod is connected to a second clamping plate. The first push cylinder and the second push cylinder drive the first clamping plate and the second clamping plate to open and close horizontally.

[0018] Preferably, the first pushing cylinder and the second pushing cylinder are arranged on one side of the first clamping plate and the second clamping plate, the piston rods of the first pushing cylinder and the second pushing cylinder are parallel to the slide rail, the first connecting rod is vertically connected to the piston rod of the first pushing cylinder on the same horizontal plane, and the second connecting rod is vertically connected to the piston rod of the second pushing cylinder on the same horizontal plane.

[0019] Preferably, a first hydraulic damper and a second hydraulic damper are provided on the outer side of the first push cylinder and the second push cylinder on the second panel, and the piston rods of the first hydraulic damper and the second hydraulic damper are respectively connected to the first connecting rod and the second connecting rod.

[0020] Preferably, a plurality of stoppers are provided on the outer side of the second panel. Each stopper includes a fixed base, a recessed connector, and a roller. The bottom wall of the recessed connector has two bidirectional stepped holes. A shoulder bolt extends outward from the bidirectional stepped holes and is fitted with a compression spring. The fixed base has threaded holes for connection with the shoulder bolt. The recessed connector is connected to the roller through the shoulder bolt. The roller elastically abuts against the side wall of the second panel, providing a buffering and blocking effect.

[0021] Preferably, the bottom of the second panel is provided with a plurality of upper connecting rods evenly distributed, and the support base plate is provided with a plurality of lower connecting rods correspondingly. A tension spring is connected between each of the upper and lower connecting rods, and the tension spring plays a buffering and stabilizing role when the six-degree-of-freedom platform electric cylinder unit adjusts the displacement of the second panel.

[0022] Preferably, the first panel is provided with a column support and a linear slide mechanism that moves vertically downwards on the column support. A third photoelectric ranging sensor and a milling cutter are installed at the lower end of the linear slide mechanism. The linear slide mechanism is controlled by CNC to drive the third photoelectric ranging sensor to measure the initial value of the end face runout of the upper end face of the motor seat impeller assembly, and the milling cutter performs cutting processing on the upper end face of the motor seat impeller assembly.

[0023] A method for machining the end face runout of a scroll turbocharger motor impeller assembly, using the aforementioned end face runout machining equipment for the scroll turbocharger motor impeller assembly, includes the following steps:

[0024] Step 1: Place the motor impeller assembly on the motor impeller assembly mounting base. Connect the motor of the motor impeller assembly to the power supply. The motor impeller assembly will operate normally. The "U-shaped" keyway at the lower end of the motor drive shaft will be suspended in the air.

[0025] Step 2: The first photoelectric ranging sensor captures the end face runout characteristics of the bottom surface of the motor mount impeller assembly in real time, and the second photoelectric ranging sensor captures the end face runout characteristics of the "U-shaped" keyway position at the lower end of the motor drive shaft, i.e., the A reference surface itself, in real time, and transmits the end face runout data of these two surfaces synchronously to the controller of the six-degree-of-freedom platform electric cylinder unit.

[0026] Step 3: Compare and analyze the preset values ​​of the controller with the end face runout data of the two aforementioned surfaces to determine whether the end face runout of the motor base bottom surface of the motor base impeller assembly is a reliable reference surface relative to reference A. If so, proceed to the next step; otherwise, an alarm will be triggered indicating a defective product, and the product must exit the workstation.

[0027] Step 4: The end face runout of the motor base impeller assembly measured in Step 3 is a reliable reference surface. That is, relative to reference A, the overall surface tilt of the motor base impeller assembly is within the adjustable range. The tilt displacement of the second panel is adjusted by the six-degree-of-freedom platform electric cylinder unit to adjust the motor base impeller assembly to meet reference A.

[0028] Step 5: After meeting the A datum, the initial value of the end face runout of the upper end face of the motor mount impeller assembly is measured using the third photoelectric distance sensor. This determines the amount of machining required and transmits the information to the milling cutter control controller that controls the milling cutter head.

[0029] Step 6: Disconnect the motor power supply to the motor mount impeller assembly. Clamp and press the side of the motor mount impeller assembly using a clamping and pressing compound mechanism. The milling cutter control controller controls the milling cutter disc to cut the upper end of the motor mount impeller assembly, thereby completing the end face runout machining of the motor mount impeller assembly.

[0030] The present invention provides a machining device and solution for the end face runout of a vortex booster motor impeller assembly, the advantages of which are as follows:

[0031] Compared to existing technologies that measure the initial runout of a single component (the part whose end face is to be cut) on one machine, followed by machining on another machine, this method has several drawbacks. First, the double clamping of the two machines can lead to positioning errors. Second, since the impeller rotation is not driven by the assembly component's own motor, the measured A-datum value deviates from the actual A-datum value of the assembly component's motor, resulting in distorted measured runout values. Third, machining a single component with its end face, followed by assembly, can lead to accumulated manufacturing tolerances in other components, potentially resulting in an unacceptable G-value after assembly, causing product defects.

[0032] This invention relates to an end-face runout processing device, which integrates measurement and processing in a novel and practical design, improving processing efficiency. It incorporates a first and a second photoelectric ranging sensor at the bottom. The device measures the end-face runout of the motor impeller assembly as an assembled component rather than a separate part, and in actual operation, measures the end-face runout of the bottom of the motor impeller assembly and the end-face runout of the "U-shaped" keyway of the motor's drive shaft, establishing a reference A. A six-degree-of-freedom platform electric cylinder unit adjusts the second panel to meet the reference A. Based on this, a third photoelectric ranging sensor detects the initial end-face runout of the upper end face of the motor impeller assembly, obtaining accurate and undistorted actual end-face runout values. Furthermore, the device performs cutting after clamping and pressing on the same mounting base, avoiding the problem of positioning deviations during secondary clamping. Measurement and processing are performed on the basis of the actual assembled component, avoiding the problem of product defects caused by the accumulation of tolerances in the production process of individual components after processing a single end-face component and then assembling it with other components. Attached Figure Description

[0033] Figure 1 This is an exploded view of an air vortex turbocharger.

[0034] Figure 2 This is an exploded view of the bottom of the motor mount impeller assembly of an air vortex turbocharger.

[0035] Figure 3 This is a schematic diagram of the motor mount impeller assembly structure of an air vortex turbocharger.

[0036] Figure 4 This is a cross-sectional view of the air vortex turbocharger structure.

[0037] Figure 5 This is a reference schematic diagram of motor mount impeller assembly A.

[0038] Figure 6 for Figure 4 A magnified schematic diagram of the G value of the impeller casing and turbine casing at point W.

[0039] Figure 7 This is a three-dimensional schematic diagram of the overall structure of the processing equipment of the present invention.

[0040] Figure 8 This is a schematic diagram of the frame and motor mount impeller assembly placement structure of the present invention.

[0041] Figure 9 This is a schematic diagram of the frame and motor mount impeller assembly placement seat, the first photoelectric ranging sensor, and the lifting cylinder of the present invention.

[0042] Figure 10 This is an exploded view of the structure of the first bracket, the motor seat impeller assembly placement seat, the first photoelectric ranging sensor, the second photoelectric ranging sensor, and the lifting cylinder of the present invention.

[0043] Figure 11 This is a schematic diagram of the frame, motor mount impeller assembly placement seat, second panel, and six-degree-of-freedom platform electric cylinder unit structure of the present invention.

[0044] Figure 12 This is a schematic diagram of the six-degree-of-freedom platform electric cylinder unit structure of the present invention.

[0045] Figure 13 This is a schematic diagram of the first panel, the second panel, and the clamping and pressing composite mechanism of the present invention.

[0046] Figure 14 This is an exploded view of the blocker structure of the present invention.

[0047] Figure 15 This is a schematic diagram of another embodiment of the blocker of the present invention.

[0048] Figure 16 This is a flowchart of the processing method of the present invention. Detailed Implementation

[0049] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0050] Figures 1 to 6This is a schematic diagram of an air vortex turbocharger, intended to help illustrate the processing equipment and method for processing the end face runout of the impeller assembly of the vortex turbocharger motor seat disclosed in this technical solution, and is limited to the specific shape of the motor seat impeller assembly of the aforementioned air vortex turbocharger.

[0051] Reference Figure 1 The air vortex turbocharger includes a turbine cover 01, a motor mount upper cover 02, an impeller 03, an impeller outer cover 04, a motor mount chassis 05, a motor 06, a motor mount rear cover 07, and a motor mount lower cover 08.

[0052] Reference Figure 2 , Figure 3 Impeller 03 is ultrasonically welded to impeller cover 04, motor 06 is fixed to motor base back cover 07, and the drive shaft of motor 06 is inserted into impeller 03 and locked with nut to form motor base impeller assembly as described in this solution.

[0053] Please refer to Figures 7 to 15 This technical solution discloses a machine for machining the end face runout of a turbocharger motor impeller assembly, which includes:

[0054] The frame includes a first panel 1, a supporting base plate 2 located below the first panel 1, and a plurality of supporting columns 3 located between the first panel 1 and the supporting base plate 2.

[0055] The motor mount impeller assembly placement seat 12 has a cutout on the first panel 1, and a first bracket 11 is provided on the cutout. The center of the first bracket 11 has a first through hole directly below the motor mount impeller assembly placement seat 12. The bottom of the first bracket 11 is provided with a lifting mechanism, which is used to lift the motor mount impeller assembly placement seat 12.

[0056] The first photoelectric ranging sensor 13 and the second photoelectric ranging sensor 14 are both mounted on the first bracket 11. The first photoelectric ranging sensor 13 is used to detect the end face runout data of the bottom surface of the motor seat impeller assembly 100, and the second photoelectric ranging sensor 14 is used to detect the end face runout data of the "U-shaped" keyway 061 position at the lower end of the drive shaft of the motor of the motor seat impeller assembly 100.

[0057] The second panel 4 is located above the cutout of the first panel 1. The second panel 4 has clearance holes corresponding to the position of the motor seat impeller assembly placement seat 12. The bottom of the second panel 4 is provided with a six-degree-of-freedom platform electric cylinder unit 5 connected to the support base plate 2.

[0058] A clamping and pressing composite mechanism is provided on the second panel 4 and is used to clamp and press the motor seat impeller assembly 100.

[0059] The third photoelectric ranging sensor 200 is used to detect the end face runout data of the upper end face a of the motor mount impeller assembly 100;

[0060] The milling cutter 300 is used to cut the upper end face a of the motor mount impeller assembly 100.

[0061] Reference Figure 10 In a preferred embodiment, the lifting mechanism adopts a lifting cylinder 15. An "L"-shaped mounting bracket is provided at the bottom of the first bracket 11 to fix the lifting cylinder 15. The piston lifting component of the lifting cylinder 15 passes through the first through hole and is used to move the impeller assembly placement seat 12 of the lifting motor seat.

[0062] Reference Figure 7 , Figure 11 Furthermore, the clamping and pressing composite mechanism includes a slide rail 6 on the second panel 4, a first slider group 7 and a second slider group 8 on the slide rail 6, a first clamping plate 9 and a second clamping plate 10 respectively on the first slider group 7 and the second slider group 8, and a clamping drive unit on the second panel 4 for driving the first clamping plate 9 and the second clamping plate 10 to open and close horizontally; the first clamping plate 9 and the second clamping plate 70 are respectively provided with a first mounting port and a second mounting port penetrating the plate surface, and a first pneumatic slide table 16 and a second pneumatic slide table 17 are respectively vertically installed in the first mounting port and the second mounting port, and a first clamping arm 161 and a second clamping arm 171 that move up and down are respectively provided on the first pneumatic slide table 16 and the second pneumatic slide table 17.

[0063] Reference Figure 7 , Figure 13 In a preferred embodiment, the clamping drive unit includes a first push cylinder 18 and a second push cylinder 19. The piston rods of the first push cylinder 18 and the second push cylinder 19 are respectively connected to a first connecting rod 181 and a second connecting rod 191. The first connecting rod 181 is connected to a first clamping plate 9, and the second connecting rod 191 is connected to a second clamping plate 10. The first push cylinder 18 and the second push cylinder 19 drive the first clamping plate 9 and the second clamping plate 10 to perform horizontal opening and closing movements.

[0064] Furthermore, the first pushing cylinder 18 and the second pushing cylinder 19 are arranged on one side of the first clamping plate 9 and the second clamping plate 10. The piston rods of the first pushing cylinder 18 and the second pushing cylinder 19 are parallel to the slide rail 6. The first connecting rod 181 is vertically connected to the piston rod of the first pushing cylinder 18 on the same horizontal plane, and the second connecting rod 191 is vertically connected to the piston rod of the second pushing cylinder 19 on the same horizontal plane.

[0065] Reference Figure 7 , Figure 13Preferably, a first hydraulic buffer 20 and a second hydraulic buffer 21 are provided on the outer side of the first push cylinder 18 and the second push cylinder 19 on the second panel 4, parallel to each other. The piston rods of the first hydraulic buffer 20 and the second hydraulic buffer 21 are respectively connected to the first connecting rod 181 and the second connecting rod 191.

[0066] Reference Figure 1 , Figure 14 In a preferred embodiment, a plurality of stoppers 22 are provided on the outer side of the second panel 4. Each stopper 22 includes a fixed base 221, a recessed connector 222, and a roller 223. The bottom wall of the recess of the recessed connector 222 is provided with two bidirectional stepped holes. A first shoulder bolt 224 extends outward from the bidirectional stepped holes and is fitted with a compression spring 225. The fixed base 221 is provided with threaded holes that connect to the first shoulder bolt 224. The recess of the recessed connector 222 is connected to the roller 223 through a second shoulder bolt 226. The roller 223 elastically abuts against the side wall of the second panel 4, playing a buffering and blocking role.

[0067] Reference Figure 1 , Figure 15 The fixing seat 221 of the blocker 22 is a rectangular block structure, designed as an "L"-shaped right-angle fixing seat 221', forming a right-angle blocker. This right-angle blocker can be used at one corner of the second panel 4. Using a right-angle blocker can reduce the number of blockers 22.

[0068] Reference Figure 7 In a preferred embodiment, a plurality of upper connecting rods are evenly provided at the bottom of the second panel 4, and a plurality of lower connecting rods are correspondingly provided on the support base plate. A tension spring 23 is connected between each of the upper and lower connecting rods. The tension spring 23 plays a buffering and stabilizing role when the six-degree-of-freedom platform electric cylinder unit 5 adjusts the displacement of the second panel 4.

[0069] Furthermore, the first panel 1 is provided with a column support 400 and a linear slide mechanism that moves vertically downwards on the column support 400. A third photoelectric distance sensor 200 and a milling cutter 300 are installed at the lower end of the linear slide mechanism. The linear slide mechanism is controlled by CNC to drive the third photoelectric distance sensor 200 to measure the initial value of the end face runout of the upper end face a of the motor seat impeller assembly 100, and the milling cutter 300 to cut the upper end face a of the motor seat impeller assembly 100.

[0070] Reference Figure 7 , Figure 16 Another embodiment of this solution discloses a method for machining the end face runout of a scroll turbocharger motor impeller assembly. Using the aforementioned machining equipment for the end face runout of the scroll turbocharger motor impeller assembly, the method includes the following steps:

[0071] Step 1: Place the motor impeller assembly 100 on the motor impeller assembly placement seat 12. Connect the motor 6 of the motor impeller assembly 100 to the power supply. The motor impeller assembly 100 operates normally. The "U-shaped" keyway 601 at the lower end of the drive shaft of the motor 6 is suspended.

[0072] Step 2: The first photoelectric ranging sensor 13 captures the end face runout characteristics of the bottom surface of the motor seat impeller assembly in real time, and the second photoelectric ranging sensor 14 captures the end face runout characteristics of the "U-shaped" keyway 601 position at the lower end of the motor drive shaft, i.e., the A reference surface itself, in real time, and transmits the end face runout data of these two surfaces synchronously to the controller of the six-degree-of-freedom platform electric cylinder unit 5.

[0073] Step 3: Compare and analyze the preset values ​​of the controller with the end face runout data of the two aforementioned surfaces to determine whether the end face runout of the bottom surface of the motor seat 05 of the motor seat impeller assembly 100 is a reliable reference surface relative to reference A. If so, proceed to the next step; otherwise, an alarm will be triggered indicating a defective product, and the workstation must be exited.

[0074] Step 4: The end face runout of the bottom surface of the motor seat 05 of the motor seat impeller assembly 100 measured in Step 3 is a reliable reference surface. That is, relative to the A reference, the overall surface tilt of the motor seat impeller assembly 100 is within the adjustable range. The tilt displacement of the second panel 4 is adjusted by the six-degree-of-freedom platform electric cylinder unit 5 to achieve the adjustment of the motor seat impeller assembly 100 to meet the A reference.

[0075] Step 5: After the upper end face a of the motor mount impeller assembly 100 meets the A reference, the third photoelectric distance sensor 200 measures the initial value of the end face runout, thereby determining the amount of machining required, and transmits the information to the milling cutter control controller of the milling cutter head 300.

[0076] Step 6: Disconnect the motor power supply to the motor impeller assembly 100. Clamp and press the side of the motor impeller assembly 100 through the clamping and pressing compound mechanism. The milling cutter control controller controls the milling cutter disk 300 to cut the upper end face a of the motor impeller assembly 100, thereby completing the end face runout machining of the motor impeller assembly 100.

[0077] The end face runout processing equipment of this invention realizes the integrated design of measurement and processing. In the same equipment, the end face runout value of the motor seat impeller assembly 100 is measured in actual operation "movement". After the value is measured, it is clamped and pressed into a "static" state for cutting processing. The structural design is novel and practical, the processing is accurate and the yield rate is high, and it is also conducive to improving processing efficiency. A first photoelectric ranging sensor 13 and a second photoelectric ranging sensor 14 are installed at the bottom of the motor impeller assembly 100. These sensors are used to measure the end face runout of the bottom of the motor impeller assembly 100 and the end face runout of the "U-shaped" keyway 601 of the drive shaft of the motor 6 in the motor impeller assembly 100, as well as the A-reference. The second panel 4 is adjusted by the six-degree-of-freedom platform electric cylinder unit 5 to ensure that the motor impeller assembly 100 meets the A-reference. Based on this, a third photoelectric ranging sensor 200 detects the initial end face runout value of the upper end face a of the motor impeller assembly 100, obtaining accurate and undistorted actual end face runout values. Furthermore, the assembly is clamped and pressed on the same motor impeller assembly mounting seat 12 before machining, avoiding the problem of secondary clamping and positioning deviations. Measurement and processing are performed based on the actual assembled components, avoiding the problem of product defects caused by the accumulation of tolerances in the production process of each component of the assembly assembly after machining a single end face component to be cut and then assembling it with other components.

[0078] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A machining device for the end face runout of a turbocharger motor impeller assembly, characterized in that, include: The frame includes a first panel (1), a support base plate (2) located below the first panel (1), and a plurality of support columns (3) located between the first panel (1) and the support base plate (2). The motor mount impeller assembly placement seat (12) has a cutout on the first panel (1) and a first bracket (11) on the cutout. The center of the first bracket (11) is a first through hole directly below the motor mount impeller assembly placement seat (12). The bottom of the first bracket (11) is provided with a lifting mechanism for lifting the motor mount impeller assembly placement seat (12). The first photoelectric ranging sensor (13) and the second photoelectric ranging sensor (14) are both mounted on the first bracket (11). The first photoelectric ranging sensor (13) is used to detect the end face runout data of the bottom surface of the motor seat impeller assembly (100), and the second photoelectric ranging sensor (14) is used to detect the end face runout data of the "U-shaped" keyway (061) at the lower end of the drive shaft of the motor of the motor seat impeller assembly (100). The second panel (4) is located above the cutout of the first panel (1). The second panel (4) has clearance holes corresponding to the position of the motor seat impeller assembly placement seat (12). The bottom of the second panel (4) is provided with a six-degree-of-freedom platform electric cylinder unit (5) connected to the support base plate (2). A clamping and pressing composite mechanism is provided on the second panel (4) for clamping and pressing the motor seat impeller assembly (100); The third photoelectric ranging sensor (200) is used to detect the end face runout data of the upper end face (a) of the motor mount impeller assembly (100); A milling cutter (300) is used to cut the upper end face (a) of the motor mount impeller assembly (100).

2. The end face runout machining apparatus for a turbocharged motor vane assembly as set forth in claim 1, wherein The lifting mechanism adopts a lifting cylinder (15). An "L"-shaped mounting bracket is provided at the bottom of the first bracket (11) to fix the lifting cylinder (15). The piston lifting part of the lifting cylinder (15) passes through the first through hole and is used to move the impeller assembly placement seat (12) of the lifting motor seat.

3. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 1, characterized in that, The clamping and pressing composite mechanism includes a slide rail (6) on the second panel (4), a first slider group (7) and a second slider group (8) on the slide rail (6), a first clamping plate (9) on the first slider group (7), and a second clamping plate (10) on the second slider group (8). The second panel (4) is provided with a clamping drive unit that drives the first clamping plate (9) and the second clamping plate (10) to open and close horizontally. The first clamping plate (9) and the second clamping plate (10) are respectively provided with a first mounting port and a second mounting port that penetrate the plate surface. The first mounting port and the second mounting port are respectively vertically installed with a first pneumatic slide table (16) and a second pneumatic slide table (17). The first pneumatic slide table (16) and the second pneumatic slide table (17) are respectively provided with a first clamping arm (161) and a second clamping arm (171) that move up and down.

4. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 3, characterized in that, The clamping drive unit includes a first push cylinder (18) and a second push cylinder (19). The piston rods of the first push cylinder (18) and the second push cylinder (19) are respectively connected to a first connecting rod (181) and a second connecting rod (191). The first connecting rod (181) is connected to the first clamping plate (9), and the second connecting rod (191) is connected to the second clamping plate (10). The first push cylinder (18) and the second push cylinder (19) drive the first clamping plate (9) and the second clamping plate (10) to open and close horizontally.

5. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 4, characterized in that, The first push cylinder (18) and the second push cylinder (19) are arranged on one side of the first clamping plate (9) and the second clamping plate (10). The piston rods of the first push cylinder (18) and the second push cylinder (19) are parallel to the slide rail (6). The first connecting rod (181) is vertically connected to the piston rod of the first push cylinder (18) on the same horizontal plane. The second connecting rod (191) is vertically connected to the piston rod of the second push cylinder (19) on the same horizontal plane.

6. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 5, characterized in that, A first hydraulic buffer (20) and a second hydraulic buffer (21) are provided on the outer side of the first push cylinder (18) and the second push cylinder (19) on the second panel (4), and the piston rods of the first hydraulic buffer (20) and the second hydraulic buffer (21) are respectively connected to the first connecting rod (181) and the second connecting rod (191).

7. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 1, characterized in that, Multiple stoppers (22) are provided on the outer side of the second panel (4). The stoppers (22) include a fixed base (221), a recessed connector (222), and a roller (223). The recessed bottom wall of the recessed connector (222) is provided with two bidirectional stepped holes. A first shoulder bolt (224) is passed out from the bidirectional stepped holes and a compression spring (225) is sleeved on it. The fixed base (221) is provided with a threaded hole that is connected to the first shoulder bolt (224). The recessed part of the recessed connector (222) is connected to the roller (223) through a second shoulder bolt (226). The roller (223) elastically abuts against the side wall of the second panel (4) and plays a buffering and blocking role.

8. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 1, characterized in that, The bottom of the second panel (4) is provided with multiple upper connecting rods, and the support base plate is provided with multiple lower connecting rods. A tension spring (23) is connected between each of the upper and lower connecting rods. The tension spring (23) plays a buffering and stabilizing role when the six-degree-of-freedom platform electric cylinder unit (5) adjusts the displacement of the second panel (4).

9. The end face runout machining equipment for the turbocharger motor impeller assembly according to claim 1, characterized in that, The first panel (1) is provided with a column support (400) and a linear slide mechanism that moves vertically downwards on the column support (400). A third photoelectric distance sensor (200) and a milling cutter (300) are installed at the lower end of the linear slide mechanism. The linear slide mechanism is controlled by CNC to drive the third photoelectric distance sensor (200) to measure the initial value of the end face runout of the upper end face (a) of the motor seat impeller assembly (100), and the milling cutter (300) performs cutting processing on the upper end face (a) of the motor seat impeller assembly (100).

10. A method for machining the end face runout of a scroll turbocharger motor impeller assembly, using the end face runout machining equipment for the scroll turbocharger motor impeller assembly as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: Place the motor impeller assembly (100) on the motor impeller assembly placement seat (12). Connect the motor (06) of the motor impeller assembly (100) to the power supply. The motor impeller assembly (100) is running normally. The "U-shaped" keyway (601) at the lower end of the drive shaft of the motor (06) is suspended. Step 2: The first photoelectric ranging sensor (13) captures the end face runout characteristics of the bottom surface of the motor seat impeller assembly in real time, and the second photoelectric ranging sensor (14) captures the end face runout characteristics of the "U-shaped" keyway (601) at the lower end of the motor drive shaft, i.e., the A reference surface itself, in real time, and transmits the end face runout data of these two surfaces synchronously to the controller of the six-degree-of-freedom platform electric cylinder unit (5). Step 3: Compare and analyze the preset values ​​of the controller with the end face runout data of the two aforementioned surfaces to determine whether the end face runout of the bottom surface of the motor seat (05) of the motor seat impeller assembly (100) is a reliable reference surface relative to reference A. If so, proceed to the next step; otherwise, an alarm will be triggered indicating that the product is defective and the worker must exit the workstation. Step 4: The end face runout of the bottom surface of the motor seat (05) of the motor seat impeller assembly (100) measured in Step 3 is a reliable reference surface. That is, relative to the A reference, the overall surface tilt of the motor seat impeller assembly (100) is within the adjustable range. The tilt displacement of the second panel (4) is adjusted by the six-degree-of-freedom platform electric cylinder unit (5) to adjust the motor seat impeller assembly (100) to meet the A reference. Step 5: The initial value of the end face runout of the upper end face (a) of the motor mount impeller assembly (100) after meeting the A datum is measured by the third photoelectric distance sensor (200), thereby obtaining the machining amount to be cut, and transmitting the information to the milling cutter machining controller that controls the milling cutter head (300). Step 6: Disconnect the motor power supply of the motor impeller assembly (100), clamp and press the side of the motor impeller assembly (100) through the clamping and pressing compound mechanism, and control the milling cutter disk (300) to cut the upper end face (a) of the motor impeller assembly (100) to complete the end face runout machining of the motor impeller assembly (100).

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