Stacked workpiece coaxiality non-contact measurement and correction workbench and method

Abstract

The invention discloses a stacked workpiece coaxiality non-contact measurement and correction workbench and method, and the workbench comprises a cabinet body which is internally provided with an industrial work station. The rotating table, the lifting assembly and the touch display unit are all arranged at the top end of the cabinet body and are in communication connection with the industrial workstation; wherein the rotating table is positioned in the middle of the cabinet body and is internally provided with an angle encoder; the lifting assembly is located on one side of the rotating table, the driving end of the lifting assembly is connected with a distance measuring body and an adjusting body, the distance measuring body is arranged at the top of the adjusting body and axially parallel to the adjusting body, and the measuring optical axis of the distance measuring body perpendicularly intersects with the central axis of the rotating table; the touch display unit is located on the other side of the rotating table; after the workpiece to be measured is placed on the rotating table, the rotating table drives the workpiece to be measured to rotate around the rotating table in the axial direction, and meanwhile the distance measuring body obtains the distance between the outer circle surface of the workpiece to be measured and the distance measuring body, so that the industrial work station calculates the coaxiality error vector between the workpiece to be measured and the rotating table.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of stack cylinder part coaxiality measurement and correction, and particularly relates to a stack workpiece coaxiality non-contact measurement and correction workbench and method. BACKGROUND

[0002] In the field of mechanical manufacturing and assembly, the stack assembly of cylindrical workpieces is a widely used basic process, and the assembly precision directly determines the running stability, transmission efficiency and service life of the subsequent whole machine equipment. Coaxiality, as a core index for measuring the stack assembly precision, plays a decisive role in the workpiece assembly quality. If the coaxiality error of the stacked workpiece exceeds the tolerance range, it will cause vibration, noise, accelerated wear and tear and other problems during equipment operation, and even cause equipment failure, economic loss or safety hazards in severe cases. Therefore, it is crucial to accurately detect and correct the coaxiality of the stack cylindrical workpiece.

[0003] At present, in the stack assembly process of cylindrical workpieces, the coaxiality detection mainly relies on manual operation, and the core measurement method is the dial gauge method. This method needs to use a turntable to cooperate with a special clamping tool to build a reference positioning platform, and uses a dial gauge as the core measurement tool to judge whether the coaxiality meets the requirements by obtaining the runout value of the specific position of the workpiece. The specific operation process is as follows: first, the operator needs to manually adjust the relative position of the rack and the turntable to ensure that the probe of the dial gauge can maintain continuous and stable contact with the surface of the measured workpiece during rotation. This step requires higher experience of the operator, and the adjustment accuracy directly affects the subsequent measurement results. After the position adjustment is completed, the operator manually rotates the turntable for more than one revolution, continuously observes and records the reading range of the dial gauge during the process, and judges whether the workpiece coaxiality is within the preset tolerance range according to the change range. If the reading change exceeds the tolerance range, the operator needs to manually adjust the position of the workpiece on the tooling according to experience, and then repeat the above position adjustment, turntable rotation and reading judgment process until the dial gauge reading change meets the requirements, completing the single coaxiality detection and correction.

[0004] However, the above artificial detection and correction method has many inherent defects in practical application, which is difficult to meet the requirements of modern production on efficiency, accuracy and stability: first, the measurement accuracy is highly dependent on the experience and skill of the operator, and subjective errors are easily introduced when manually adjusting the position of the turntable and the rack and judging the change of the dial gauge reading, and the uniformity of the rotation speed of the manually rotated turntable is difficult to control, which further aggravates the measurement error, resulting in poor consistency and reliability of the detection results; second, the detection and correction process is complicated, and each adjustment needs to repeat multiple rounds of operation, which seriously restricts the overall production efficiency for batch production scenes; third, the labor intensity of manual operation is large, and long-time repeated adjustment, reading and fine adjustment actions can easily make the operator tired, further reducing the detection accuracy and efficiency; fourth, this method can only indirectly reflect the coaxiality error through the change of the dial gauge reading, and cannot accurately obtain the specific value and direction of the error, resulting in lack of accurate data support for subsequent manual fine adjustment, which often needs to be adjusted several times to meet the requirements, further increasing the operation cost. SUMMARY

[0005] The present application provides a stacked workpiece coaxiality non-contact measurement and correction workbench and method to solve the technical defects raised in the above background art.

[0006] In order to achieve the above purpose, the following technical solutions are adopted: In a first aspect, a stacked workpiece coaxiality non-contact measurement and correction workbench is provided, comprising: a cabinet body, which is internally provided with an industrial workstation; a rotary table, a lifting assembly and a touch display unit, which are all arranged at the top end of the cabinet body and are in communication connection with the industrial workstation; wherein the rotary table is located in the middle part of the cabinet body and is internally provided with an angle encoder; a lifting assembly located on one side of the rotary table, which is connected with a distance measuring main body and an adjusting main body on the driving end, the distance measuring main body is arranged on the top of the adjusting main body, and the distance measuring main body and the adjusting main body are axially parallel, the measurement optical axis of the distance measuring main body is perpendicular to the central axis of the rotary table; a touch display unit located on the other side of the rotary table; wherein when the measured workpiece is placed on the rotary table, the rotary table drives the measured workpiece to rotate around the rotary table axis, at the same time, the distance measuring main body obtains the distance between the measured workpiece outer surface and the distance measuring main body, so that the industrial workstation calculates the coaxiality error vector between the measured workpiece and the rotary table, and drives the measured workpiece to displace through the adjusting main body.

[0007] Further, the cabinet body is provided with a mounting hole at the top end, and the rotary table is arranged in the mounting hole.

[0008] Further, a motor is further arranged in the rotating table, and the motor is used to drive the rotating table to rotate.

[0009] Further, the rotating table has a cross section in a ring shape.

[0010] Further, the distance measuring body is internally arranged with a laser emission light path, a receiving light path and a photoelectric detection module. After the laser emission light path emits a laser beam to the outer surface of the workpiece to be measured, the laser beam is diffusely reflected by the outer surface of the workpiece to be measured, and then enters the photoelectric detection module through the receiving light path. The photoelectric detection module is used to convert the signal into a distance signal and transmit the distance signal to the industrial workstation.

[0011] Further, the distance measuring body is a laser displacement sensor.

[0012] Further, the driving head of the adjusting body is made of polyurethane or nitrile rubber.

[0013] Further, the lifting assembly is vertically arranged at the top end of the cabinet body, and is used to drive the distance measuring body and the adjusting body to displace along a direction coinciding with the axis of the rotating table.

[0014] Further, the touch display unit is a touch display screen, and is used to display measurement parameters, coaxiality error curves and a preset measurement program.

[0015] In a second aspect, a stacked workpiece coaxiality non-contact measurement and correction method is provided, and the method is performed by using the stacked workpiece coaxiality non-contact measurement and correction workbench. When the workpiece to be measured is placed at the center of the rotating table, the industrial workstation is started, and the touch display unit is used to preset a measurement and correction program; When the rotating table rotates based on the preset measurement program, the distance measuring body synchronously collects distance data between the outer surface of the workpiece to be measured and the distance measuring body. The industrial workstation calculates a coaxiality error vector based on a model fitting algorithm, inputs the coaxiality error vector calculation result into the correction program, and controls the adjusting body to drive the workpiece to be measured to displace, so that the axis of the workpiece to be measured coincides with the axis of the rotating table.

[0016] Compared with the prior art, the present application has the following beneficial effects: Through the cooperative control of the industrial workstation and the rotating table, the lifting assembly and the touch display unit, a full-process automation system of measurement, calculation and correction is constructed, and the low-efficiency mode of traditional manual operation is completely changed: in the measurement stage, the lifting assembly can drive the distance measuring main body and the adjusting main body to realize height adjustment, and manual calibration of the contact state of the probe and the workpiece is not needed; the automatic rotation of the rotating table replaces manual rotation, and the uniformity of the rotation speed is accurately controlled by the equipment, so that the influence of the rotation speed fluctuation of manual rotation on the measurement accuracy is avoided; in the data processing and correction stage, the industrial workstation can receive the signals of the distance measuring main body and the angle encoder in real time and automatically calculate the coaxiality error vector, and then directly control the adjusting main body to drive the workpiece displacement to complete the correction, compared with the traditional mode of manual judgment, manual fine adjustment and repeated measurement, the automatic closed-loop control of error calculation and correction operation is realized, and the single detection and correction process can be completed without manual intervention, so that the processing time of a single workpiece is greatly shortened, and the overall production efficiency can be significantly improved, especially in batch production scenes, and the overall production efficiency can be significantly improved, and in addition, the setting of the touch display unit realizes the visualization and convenience of the operation process, and the operator only needs to simply set the parameters to start the equipment, and the dependence on operation skills is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 A first perspective view of a stacked workpiece coaxiality non-contact measurement and correction workbench provided by the present application; Figure 2 A distance measuring main body structure diagram of a stacked workpiece coaxiality non-contact measurement and correction workbench provided by the present application; Figure 3 An adjusting main body structure diagram of a stacked workpiece coaxiality non-contact measurement and correction workbench provided by the present application; Figure 4 A rotating table driving workpiece rotation diagram of a stacked workpiece coaxiality non-contact measurement and correction workbench provided by the present application; Figure 5 A coaxiality error judgment diagram of a stacked workpiece coaxiality non-contact measurement and correction workbench provided by the present application; Figure 6 A measured workpiece deviation angle correction diagram of a stacked workpiece coaxiality non-contact measurement and correction workbench provided by the present application; Figure 7 A self-correction schematic diagram in a stacked workpiece coaxiality non-contact measurement correction workbench provided by the present application; Figure 8 A measurement schematic diagram of two workpieces to be measured in a stacked workpiece coaxiality non-contact measurement correction workbench provided by the present application; Figure 9 A second perspective schematic diagram of a stacked workpiece coaxiality non-contact measurement correction workbench provided by the present application; Figure 10 A third perspective schematic diagram of a stacked workpiece coaxiality non-contact measurement correction workbench provided by the present application; Figure 11 A working flow schematic diagram of a stacked workpiece coaxiality non-contact measurement correction workbench provided by the present application; Wherein: 1, distance measuring main body; 2, lifting assembly; 3, rotating table; 4, adjusting main body; 5, cabinet; 6, touch display unit; 7, start-stop button; 8, first workpiece to be measured; 9, second workpiece to be measured. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0021] It should be noted that: similar numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0022] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product of the present application when it is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] To solve the technical defects proposed in the background art, the present embodiment provides a stacked workpiece coaxiality non-contact measurement and correction workbench.

[0026] The present application will be described in further detail below with reference to the accompanying drawings: Referring to Figures 1-10The embodiment of the present application provides a kind of stack workpiece coaxiality non-contact measurement correction workbench, including cabinet 5, cabinet 5 is built-in industrial workstation;Rotary table 3, lifting assembly 2 and touch display unit 6, all are set to the top of cabinet 5, and are communicated with industrial workstation;Wherein, rotary table 3 is located in the middle of cabinet 5, built-in angle encoder;Lifting assembly 2, is located in rotary table 3 side, its drive end is connected with distance measuring main body 1 and adjusting main body 4, distance measuring main body 1 is located at the top of adjusting main body 4, and the axial parallelism between distance measuring main body 1 and adjusting main body 4, the measuring optical axis of distance measuring main body 1 is perpendicular to the central axis of rotary table 3 and intersects;Touch display unit 6, is located in the other side of rotary table 3;Wherein, when the measured workpiece is placed on rotary table 3, rotary table 3 drives the measured workpiece to rotate around rotary table 3 axial, while distance measuring main body 1 obtains the distance between the measured workpiece outer surface and distance measuring main body 1, to make industrial workstation calculate the coaxiality error vector between the measured workpiece and rotary table 3, and drive the measured workpiece displacement by adjusting main body 4, to make the measured workpiece and rotary table 3 coaxiality.

[0027] By adopting distance measuring main body 1 instead of traditional dial gauge as core measuring element, through the layout design of the measuring optical axis and the central axis of rotary table 3 perpendicular intersection, in the process of rotary table 3 driving the measured workpiece to rotate, the distance data between the measured workpiece outer surface and distance measuring main body 1 can be obtained non-contact, which avoids the disadvantages caused by mechanical contact between dial gauge probe and measured workpiece surface in traditional dialing method.

[0028] On the one hand, the influence of probe wear and tear and measured workpiece surface scratch on measurement results is eliminated;On the other hand, the subjective error introduced by manual adjustment of probe contact state is avoided, and the objectivity of measurement data is ensured;At the same time, the angle encoder built-in rotary table 3 can accurately collect the rotation angle information of the measured workpiece, and the industrial workstation can directly calculate the coaxiality error vector between the measured workpiece and rotary table 3 by combining distance data and angle data, and can accurately obtain the specific value and direction of error, which provides accurate data support for subsequent correction, greatly reduces the repeated adjustment problem caused by fuzzy error judgment, and significantly improves the consistency and reliability of detection results.

[0029] In the implementation, in the measurement stage, lifting assembly 2 can drive distance measuring main body 1 and adjusting main body 4 to realize height adjustment, without manual calibration of the contact state between probe and measured workpiece;Wherein, the automatic rotation of rotary table 3 replaces manual rotation operation, and the uniformity of rotation speed is accurately controlled by equipment, which avoids the influence of manual rotation speed fluctuation on measurement accuracy.

[0030] In the data processing and correction stage, the industrial workstation can receive the signals of the distance measuring body 1 and the angle encoder in real time and automatically calculate the coaxiality error vector, then directly control the adjustment body 4 to drive the displacement of the measured workpiece to complete the correction. Compared with the traditional manual judgment, manual fine adjustment and repeated measurement cycle process, the error calculation and correction operation are automatically controlled in a closed loop, and the single detection and correction process can be completed without manual intervention, greatly shortening the processing time of a single workpiece.

[0031] In addition, the setting of the touch display unit 6 realizes the visualization and convenience of the operation process, and the operator only needs to simply set the parameters to start the equipment, reducing the dependence on operation skills.

[0032] The cabinet 5 is used as a basic carrier, and the industrial workstation is built-in. The rotating table 3, the lifting assembly 2 and the touch display unit 6 are integrated at the top end of the cabinet 5, forming a compact integrated workbench, which not only saves the space occupied by the equipment and facilitates the optimization of workshop layout, but also realizes the stability of collaborative control through the modular layout of each component.

[0033] Further, the top end of the cabinet 5 is provided with a mounting hole, and the rotating table 3 is arranged in the mounting hole. The rotating table 3 is further provided with a motor built-in, and the motor is used to drive the rotating table 3 to rotate. The cross section of the rotating table 3 is annular. The built-in motor of the rotating table 3 replaces manual rotation, and the rotation speed is uniform and controllable, avoiding the measurement error caused by the speed fluctuation of manual operation. The integrated design of the motor and the rotating table 3 makes the power transmission stable, reduces external interference, and makes the rotation process of the measured workpiece more stable.

[0034] In the present scheme, the distance measuring body 1 is built-in with a laser emitting light path, a receiving light path and a photoelectric detection module. After the laser emitting light path emits a laser beam to the outer surface of the measured workpiece, the laser beam is diffusely reflected by the outer surface of the measured workpiece and then enters the photoelectric detection module through the receiving light path. The photoelectric detection module is used to convert the signal into a distance signal and transmit it to the industrial workstation.

[0035] The laser beam has the characteristics of strong directivity and energy concentration, and cooperates with the diffuse reflection receiving design to accurately capture the position signal of the outer surface of the measured workpiece, reducing the measurement error caused by environmental interference. The photoelectric detection module directly converts the optical signal into a distance signal, avoiding the subjective error of manual reading of the dial gauge, and the measurement data is more objective and accurate, providing reliable data support for coaxiality judgment. In addition, the laser ranging can realize non-contact detection without direct contact with the surface of the measured workpiece, avoiding damage to the surface of the measured workpiece caused by contact measurement, and eliminating the positioning deviation caused by contact pressure.

[0036] In the implementation, the distance measuring main body 1 is a laser displacement sensor. The laser displacement sensor is a mature industrial device with micron-level measurement resolution, which can accurately capture the small position changes of the outer surface of the workpiece to be measured, greatly improving the measurement accuracy of the distance signal. The laser emission, receiving and photoelectric conversion modules built-in the laser displacement sensor are standardized calibrated, with strong signal conversion stability, reducing the interference of environmental light, temperature and other factors, and ensuring the consistency of the detection data.

[0037] In the scheme, the adjusting main body 4 is an electric push rod. The driving head of the electric push rod is made of polyurethane or nitrile rubber. Both polyurethane and nitrile rubber are flexible materials with moderate hardness, which will not cause scratches or indentations when contacting the outer circle of the workpiece to be measured, avoiding damaging the surface precision or appearance of the workpiece during the correction process and ensuring the assembly quality of the workpiece to be measured.

[0038] In the scheme, the lifting assembly 2 is vertically arranged at the top end of the cabinet 5 and is used to drive the distance measuring main body 1 and the adjusting main body 4 to displace along the direction coinciding with the axis of the rotary table 3. In a specific operation, the lifting assembly 2 can be a linear module in one implementation, or a linear motor in another implementation.

[0039] In the scheme, the touch display unit 6 is a touch display screen, which is used to display measurement parameters, coaxiality error curves and preset measurement programs.

[0040] In the scheme, the cabinet 5 is also provided with a start-stop button 7, which is electrically connected to the industrial workstation host through a control circuit and is used for overall power control and software start of the system. When the start-stop button 7 is pressed, the system automatically completes the power-on, self-checking and initialization process, and starts the overall control software in the workstation, realizing the power-on activation and communication connection establishment of each actuator. When the start-stop button 7 is pressed again, the system executes the orderly shutdown instruction, safely closes each power supply and program, realizes the centralized start-stop control of the whole machine, simplifies the operation process, and improves the safety and convenience of the system.

[0041] In the specific operation, as shown in the figure, Figure 11 the measured workpiece includes a first workpiece to be measured 8 and a second workpiece to be measured 9. The start-stop button 7 is pressed, the entire workbench power is turned on, the system is self-checked and initialized, and the overall control program in the workstation is started, and each actuator is activated. Then the first workpiece to be measured 8 is placed on the circular table surface of the rotary table 3 by manual or mechanical arm, Figure 4 as shown.

[0042] Next, the single measurement button in the overall control program is pressed through the touch display unit 6, and the host computer starts to control the rotating table 3 to rotate the first workpiece 8 on it continuously and uniformly by 360°. At the same time, the distance measuring main body 1 is controlled to sample and record the distance value L(θ) of the outer surface of the first workpiece 8 at the set angle interval, form a complete measurement data sequence of one circle, and read to the overall control program of the host computer; Then, the overall control program of the host computer contains data processing and coaxiality calculation fitting algorithms, which perform least square circle fitting on each circle of measurement data to calculate the coaxiality error D and the corresponding included angle θ. If the coaxiality error D is within the error range preset in the overall control program (initially defaulting to 0.1 mm), the coaxiality error D is corrected by adjusting the rotating angle of the rotating table 3 through the overall control program, so that the center of the current cross section is on the axis of the adjusting main body 4 (realizing Figure 5 ).

[0043] The angle correction button in the overall control program is pressed, and the host computer adjusts the rotating angle of the rotating table 3 through the overall control program, so that the center of the current cross section is on the axis of the adjusting main body 4 (realizing θ ~ 0 ), and is closer to the adjusting main body 4 than the center of the rotating table 3.

[0044] Finally, the automatic correction button in the overall control program is pressed, and the host computer controls the electric push rod through the overall control program to automatically push the workpiece to correct the coaxiality error (realizing D ≈0; θ ~ 0 ). Subsequently, the above operation steps are repeated to measure and correct the second workpiece 9, as shown in Figure 8 .

[0045] It is worth noting that the structure of the stacked workpiece coaxiality non-contact measurement and correction workbench can also be adjusted according to Figure 9 and Figure 10 .

[0046] In the second aspect, a stacked workpiece coaxiality non-contact measurement and correction method is provided, which is performed by using the stacked workpiece coaxiality non-contact measurement and correction workbench as described above, and includes: Placing the workpiece to be measured at the center of the rotating table, starting the industrial workstation, and pre-setting the measurement and correction program by using the touch display unit; When the rotating table is controlled to rotate based on the preset measurement program, the distance data between the outer surface of the workpiece to be measured and the distance measuring main body is synchronously collected by the distance measuring main body; The industrial workstation calculates a coaxiality error vector based on a model fitting algorithm, inputs the coaxiality error vector calculation result into the correction program, and controls the adjusting main body to drive the workpiece to be measured to displace, so that the axis of the workpiece to be measured coincides with the axis of the rotating table.

[0047] The preferred embodiments of the present application have been described above with the intent to enable those skilled in the art to make and use it. Various modifications to the preferred embodiments will be obvious to those skilled in the art and the principles and applications disclosed can be used together with other applications and as components in undreamed of applications. The present application should not be limited to the embodiments described above, but can be practiced with modification and alteration within the scope and spirit of the present application. Accordingly, the disclosure of the preferred embodiments of the present application are intended to be illustrative only and not limiting of the scope of the present application, which is set forth in the following claims.

Claims

1. A stacked workpiece coaxiality non-contact measurement correction station, characterized by, The application relates to a workbench for non-contact measurement and correction of coaxiality of stacked workpieces. The workbench comprises: a cabinet body in which an industrial workstation is arranged; a rotating table, a lifting assembly and a touch display unit which are arranged at the top end of the cabinet body and are in communication connection with the industrial workstation; wherein the rotating table is arranged in the middle of the cabinet body and is internally provided with an angle encoder; the lifting assembly is arranged on one side of the rotating table, and a distance measuring main body and an adjusting main body are connected to the driving end of the lifting assembly; the distance measuring main body is arranged on the top of the adjusting main body, and the distance measuring main body and the adjusting main body are axially parallel to each other; the measuring optical axis of the distance measuring main body is perpendicular to the central axis of the rotating table; the touch display unit is arranged on the other side of the rotating table; 2. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 1, wherein, when a workpiece to be measured is placed on the rotating table, the rotating table drives the workpiece to rotate around the rotating table, and the distance measuring main body obtains the distance between the outer circumferential surface of the workpiece to be measured and the distance measuring main body, so that the industrial workstation calculates the coaxiality error vector between the workpiece to be measured and the rotating table, and drives the workpiece to be measured to displace through the adjusting main body.

3. A stacked workpiece coaxiality non-contact measurement and correction worktable according to claim 1 or 2, characterized in that, An installation hole is formed in the top end of the cabinet body, and the rotating table is arranged in the installation hole.

4. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 3, wherein, A motor is arranged in the rotating table, and the motor is used for driving the rotating table to rotate.

5. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 1, wherein, The cross section of the rotating table is annular. A laser emitting light path, a receiving light path and a photoelectric detection module are arranged in the distance measuring main body; 6. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 5, wherein, after the laser emitting light path emits a laser beam to the outer circumferential surface of the workpiece to be measured, the laser beam is diffusely reflected by the outer circumferential surface of the workpiece to be measured, enters the photoelectric detection module through the receiving light path, and the photoelectric detection module is used for converting the signal into a distance signal and transmitting the distance signal to the industrial workstation.

7. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 1, wherein, The distance measuring main body is a laser displacement sensor.

8. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 1, wherein, The driving head of the adjusting main body is made of polyurethane or nitrile rubber.

9. A stacked workpiece coaxiality non-contact measurement and correction station according to claim 1, wherein, The lifting assembly is vertically arranged at the top end of the cabinet body and is used for driving the distance measuring main body and the adjusting main body to displace along the direction which is coincident with the axial direction of the rotating table.

10. A method of stack workpiece coaxiality non-contact measurement correction, characterized in that, The touch display unit is a touch display screen which is used for displaying measurement parameters, a coaxiality error curve and a preset measurement program. The method is performed by using the workbench for non-contact measurement and correction of coaxiality of stacked workpieces which is described in any one of claims 1-9, and the method comprises the following steps: placing the workpiece to be measured at the center of the rotating table, starting the industrial workstation and presetting the measurement and correction program by using the touch display unit; controlling the rotating table to rotate based on the preset measurement program, so that the distance data between the outer circumferential surface of the workpiece to be measured and the distance measuring main body are synchronously collected by the distance measuring main body; the industrial workstation calculates the coaxiality error vector based on a model fitting algorithm, inputs the coaxiality error vector calculation result into the correction program, controls the adjusting main body to drive the workpiece to be measured to displace by using the correction program, and makes the axis of the workpiece to be measured coincide with the axis of the rotating table.

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