Carbon fiber cylinder diameter parameter measuring tool, measuring method and pairing method

Abstract

The invention discloses a carbon fiber cylinder diameter parameter measurement tool, a measurement method and a pairing method, and belongs to the field of molecular pump traction cylinder measurement, and the technical key points are that a vision measurement assembly is used for obtaining the long diameter, the short diameter and the roundness of a carbon fiber cylinder; in an initial state, the four sample shape adjusting components are distributed around the carbon fiber cylinder in a circular array; the sample shape adjusting component comprises a sample placing seat and a pneumatic clamping jaw; the four sample placing seats are jointly used as a placing base of the carbon fiber cylinder; the four pneumatic clamping jaws can extrude / loosen the carbon fiber cylinder by extending / shortening, so that the roundness of the carbon fiber cylinder is adjusted; and the pneumatic pressures of the four pneumatic clamping jaws are connected in parallel, namely, the pneumatic pressures of the four pneumatic clamping jaws are the same during working. According to the technical scheme, whether the carbon fiber cylinder is qualified or not can be judged conveniently, the diameter parameter of the carbon fiber cylinder can be measured conveniently, and the carbon fiber cylinder can be matched with the turbine rotor conveniently.

Description

Technical Field

[0001] The present application relates to the field of measurement of the dynamic traction cylinder of a molecular pump. More specifically, it particularly relates to a measurement tool and method for measuring the diameter parameters of a carbon fiber cylinder, as well as a pairing method. Background Art

[0002] As Figure 1 shown, for a compound molecular pump, the dynamic traction cylinder 100 and the turbine rotor 200 are bonded together by glue, and the turbine rotor 200 drives the dynamic traction cylinder 100 to rotate when it rotates.

[0003] The clearance between the dynamic traction cylinder 100 and the turbine rotor 200 is one of the key control indicators of the compound molecular pump: if the clearance is too large, it will lead to backflow, efficiency loss, and affect key characteristics such as the ultimate vacuum and compression ratio of the molecular pump; if the clearance is too small, it will cause difficulties in assembling the turbine and the carbon cylinder after gluing, and cause friction and thermal failure after assembly; in addition, whether the clearance is too large or too small will affect the bonding reliability between the turbine and the carbon fiber cylinder.

[0004] For the clearance, it refers to the size of the clearance between the inner surface of the dynamic traction cylinder and the outer surface of the turbine rotor. For the dynamic traction cylinder and the turbine rotor, the dimensions of the products provided by the suppliers have a certain degree of discreteness (that is, the product dimensions of the same batch are not exactly the same). Therefore, the pairing of several dynamic traction cylinders and several turbine rotors is very important.

[0005] For the turbine rotor, its material is metal, and its size can be directly measured by methods such as a vernier caliper.

[0006] For the carbon fiber dynamic traction cylinder, since the carbon fiber cylinder is mainly produced by winding carbon filaments through a mold and then encapsulating with epoxy resin, after demolding, the winding stress of the carbon filaments and the curing stress of the epoxy resin will cause the carbon fiber cylinder to deform. That is, for the carbon fiber cylinder, its cross-section is a curve when it comes in. This makes it difficult to accurately measure the diameter of the carbon fiber cylinder by existing measurement methods, and it is also difficult to determine whether the carbon fiber cylinder meets the order requirements and to pair the carbon fiber cylinder with the turbine rotor. Summary of the Invention

[0007] The purpose of the present application is to provide a measurement tool for measuring the diameter parameters of a carbon fiber cylinder in view of the above-mentioned deficiencies of the prior art.

[0008] Another purpose of the present application is to provide a method for measuring the diameter parameters of a carbon fiber cylinder.

[0009] Still another purpose of the present application is to provide a pairing method for a carbon fiber cylinder and a turbine rotor.

[0010] The technical solution of the present application is as follows: A tool for measuring the diameter parameters of a carbon fiber cylinder, where the carbon fiber cylinder is the dynamic traction cylinder of a composite molecular pump, including: a vision measurement component and 4 sample shape adjustment members; Among them, the vision measurement component is used to obtain the long diameter, short diameter, and roundness of the carbon fiber cylinder; Among them, in the initial state, the 4 sample shape adjustment members are arranged in a circular array and distributed around the carbon fiber cylinder; Among them, the sample shape adjustment member includes a sample placement seat and a pneumatic gripper; the 4 sample placement seats together serve as the placement base of the carbon fiber cylinder; the 4 pneumatic grippers can squeeze / loosen the carbon fiber cylinder by extending / shortening, thereby adjusting the roundness of the carbon fiber cylinder; Among them, the pneumatic pressures of the 4 pneumatic grippers are in parallel, that is, during operation, the pneumatic pressures of the 4 pneumatic grippers are the same.

[0011] Furthermore, the moving directions of the 4 pneumatic grippers are the radial directions of the circular array.

[0012] Furthermore, it further includes: a gripper distance adjustment component, which is used to adjust the positions of the 4 sample shape adjustment members; The gripper distance adjustment component includes: a servo motor, a first horizontal plate, a second horizontal plate, a vertical connecting rod, a vertical moving block, an end bearing, a lead screw, and 4 horizontal moving seat components; the housing of the servo motor is fixedly connected to the first horizontal plate, and the first horizontal plate and the second horizontal plate are fixedly connected into one body through the vertical connecting rod; the output shaft of the servo motor is connected to the lead screw, and an end bearing is fixedly arranged on the side of the second horizontal plate facing the first horizontal plate, and the end of the lead screw is rotatably connected to the end bearing; a threaded hole is provided in the middle of the vertical moving block and is threadedly connected to the lead screw; the horizontal moving seat component includes: a horizontal moving seat and a connecting rod; both ends of the connecting rod are hingedly connected to the vertical moving block and the horizontal moving seat respectively; when the servo motor drives the lead screw to rotate, the vertical moving block can move up and down, and further make the horizontal moving seat move in the horizontal plane; The structures of the 4 horizontal moving seat components are the same and are evenly distributed around with the vertical axis of the lead screw as the reference; the inclination angles between the connecting rods of the 4 horizontal moving seat components and the lead screw are the same, so that when the vertical moving block moves, the moving distances of the 4 horizontal moving seats are the same; The relationship between the gripper distance adjustment component and the sample shape adjustment member is: the 4 sample shape adjustment members are respectively arranged on the 4 horizontal moving seat components; the moving directions of the pneumatic grippers of the 4 sample shape adjustment members are the same as the moving directions of the 4 horizontal moving seats; The vertical center line of the lead screw passes through the center of the circular array of the 4 sample shape adjustment members.

[0013] Further, the vertical moving block is disposed between the first horizontal plate and the second horizontal plate.

[0014] Further, the horizontal moving seat assembly further includes a guide rail fixed on the second horizontal plate, and the horizontal moving seat can be engaged with the guide rail.

[0015] A method for measuring the diameter parameters of a carbon fiber tube, comprising the following steps: S100, Place the carbon fiber tube on 4 sample placement seats, and the central axis of the carbon fiber tube coincides with the axis of the lead screw; S200, Obtain the theoretical circular diameter of the carbon fiber tube and determine whether the carbon fiber tube is qualified; S200 includes the following sub-steps: S201, Obtain the long diameter A and short diameter B of the carbon fiber tube in an unconstrained state through the visual measurement component; S202, Calculate the circumference L: L = Aπ / 3 + 2Bπ / 3; S203, Solve the circular diameter r of the carbon fiber tube after being extruded: d = L / π; S204, Determine whether it is qualified: If d is within (d 阈值1 , d 阈值2 ), it is qualified, and go to step S400; d 阈值1 , d 阈值2 represent the lower limit value and upper limit value of the diameter threshold of the carbon fiber tube; Otherwise, it is unqualified, and go to step S; S300, Obtain the actual circular diameter parameters of the carbon fiber tube, which includes the following sub-steps: S301, Gradually adjust the pressure P of the 4 pneumatic grippers to △P, 2△P, 3△P,..., n△P, and measure the roundness, long diameter, and short diameter parameters under the above different pressures through the visual measurement component; where, △P represents the step pneumatic pressure and n represents the number of test steps; S302, Determine whether the test is correct: As P increases, if the roundness shows a trend of decreasing first and then increasing, the test is successful, and go to step S303; Otherwise, the test is unsuccessful, return to step S100, and retest; S303, Determine the actual circular diameter parameters of the carbon fiber tube: Record the pneumatic gripper pressure, long diameter, and short diameter when the roundness is the smallest.

[0016] Further, △P = 0.05 MPa.

[0017] Further, the value range of n△P is [0.7 MPa, 1.0 MPa].

[0018] Further, step S100 further includes: adjusting the jaw distance adjustment component according to the size of the carbon fiber cylinder.

[0019] A pairing method for a carbon fiber cylinder and a turbine rotor, comprising the following steps: First, obtain the diameter parameters of the turbine rotor: long diameter d 涡轮长直径、 Short diameter d 涡轮短直径 ; Second, obtain the diameter parameters of the carbon fiber cylinder: long diameter d 碳纤维筒长直径 , short diameter d 碳纤维筒短直径 ; Third, determine whether pairing is possible: If it satisfies: d 碳纤维筒长直径 -d 涡轮短直径 < clearance threshold max , d 碳纤维筒短直径 -d 涡轮长直径 > clearance threshold min , then the pairing is successful; Otherwise, the pairing is unsuccessful; Wherein, the clearance threshold max , the clearance threshold min respectively represent the upper limit value and the lower limit value of the clearance threshold.

[0020] The beneficial effects of the present application are as follows: (1) The basic inventive concept of the present application is to provide a measuring tool for the diameter parameters of a carbon fiber cylinder, and its core idea lies in the following two points: 1.1, if the center of the carbon fiber cylinder is not consistent with the center of the circular array of 4 sample shape adjustment members, it will cause the shape of the carbon fiber cylinder not to become circular when it is squeezed. In this regard, the present application adopts "the pneumatic pressure of 4 pneumatic jaws is in parallel, that is, when working, the pneumatic pressure of 4 pneumatic jaws is the same", and when the pneumatic jaws are working, it is adjusted by the way of the air pressure sampling step, that is, △P, 2△P, 3△P,..., n△P are gradually adjusted. During measurement, through 4 pneumatic jaws, the center of the carbon fiber cylinder can be finely adjusted to make the center of the carbon fiber cylinder close to the center of the circular array of 4 sample shape adjustment members.

[0021] 1.2, the diameter of the carbon fiber cylinder is measured by the cooperation of "the visual measurement component and 4 sample shape adjustment members".

[0022] Specifically, the shape of the carbon fiber cylinder is extruded by four sample shape adjusting components evenly arranged in the circumferential direction of the carbon fiber cylinder, and the roundness of the carbon fiber cylinder is measured in real time by a visual measurement component. That is, when the pressures of the pneumatic grippers are ΔP (ΔP represents the step pneumatic pressure), 2ΔP, 3ΔP, …… nΔP respectively, the roundness of the corresponding carbon fiber cylinder is measured. The roundness will change from large to small and then to large again. Select the major diameter and minor diameter measured when the roundness is the smallest and pair them with the turbine rotor.

[0023] (2) For the carbon fiber cylinder, there are multiple models. The adjustment length of the pneumatic grippers of the sample shape adjusting components may be insufficient. Therefore, the design of the gripper distance adjusting component is added.

[0024] The key cooperation relationship between the gripper distance adjusting component and the four sample shape adjusting components is as follows: "The structures of the four horizontal moving seat components are the same and are evenly distributed around the vertical axis of the lead screw; the inclination angles between the connecting rods of the four horizontal moving seat components and the lead screw are the same, so that when the vertical moving block moves, the moving distances of the four horizontal moving seats are the same", "The vertical center line of the lead screw passes through the center of the circular array of the four sample shape adjusting components", "The four sample shape adjusting components are respectively arranged on the four horizontal moving seat components, and the moving directions of the pneumatic grippers of the four sample shape adjusting components are the same as the moving directions of the corresponding four horizontal moving seats". Based on the above common design, it is ensured that no matter how the horizontal moving seat moves, the projection point on the horizontal plane of the center of the circular array of the four sample shape adjusting components coincides with the vertical axis of the lead screw.

[0025] (3) The present application also provides a method for measuring the diameter parameters of a carbon fiber cylinder, which includes the following steps: S100, Place the carbon fiber cylinder on the four sample placement seats, and the central axis of the carbon fiber cylinder coincides with the axis of the lead screw; S200, Obtain the theoretical circular diameter of the carbon fiber cylinder and determine whether the carbon fiber cylinder is qualified: If it is qualified, continue the test; if it is unqualified, directly exit the test; S300, Use the measuring tooling of the present application to obtain the actual circular diameter parameters of the carbon fiber cylinder.

[0026] For the theoretical circular diameter, it is difficult to obtain the circumference of the inner surface under unconstrained conditions. In this regard, through fitting tests, it is found that: R = b + 4(a - b)θ 2 / π 2 is a suitable expression, and its integral can obtain an analytical solution.

[0027] (4) The present application also proposes a pairing method for the carbon fiber cylinder and the turbine rotor, which measures the diameter parameters of the carbon fiber cylinder based on the diameter parameter measuring tooling of the carbon fiber cylinder of the present application.

[0028] Specifically, it includes the following steps: First, obtain the diameter parameters of the turbine rotor: the long diameter d 涡轮长直径、 the short diameter d 涡轮短直径 ; Second, obtain the diameter parameters of the carbon fiber cylinder: the long diameter d 碳纤维筒长直径 , the short diameter d 碳纤维筒短直径 ; Third, determine whether they can be paired: If it satisfies: d 碳纤维筒长直径 -d 涡轮短直径 < clearance threshold max , d 碳纤维筒短直径 -d 涡轮长直径 > clearance threshold min , then the pairing is successful; Otherwise, the pairing is unsuccessful; Among them, the clearance threshold max , the clearance threshold min respectively represent the upper limit value and the lower limit value of the clearance threshold. Description of the Drawings

[0029] The following further describes the present application in detail with reference to the embodiments in the drawings, but it does not constitute any limitation to the present application.

[0030] Figure 1 is the sectional structure diagram of the compound molecular pump.

[0031] Figure 2 is the schematic diagram of the projection trajectory line of the inner surface of the carbon fiber cylinder determined by the present application on the horizontal plane.

[0032] Figure 3 is the three-dimensional structure design schematic diagram of the carbon fiber cylinder diameter parameter measuring tooling of the present application.

[0033] Figure 4 is the three-dimensional structure design schematic diagram of the jaw distance adjustment component of the present application.

[0034] Figure 5 is the vertical structure design schematic diagram of the jaw distance adjustment component of the present application.

[0035] Figure 6 is the three-dimensional structure design schematic diagram of the horizontal moving seat component of the present application.

[0036] Figure 7 is the three-dimensional design schematic diagram of the sample shape adjustment component of the present application.

[0037] Figure 8 is the three-dimensional design schematic diagram of the sample shape adjustment component, the jaw distance adjustment component, and the carbon fiber cylinder of the present application.

[0038] The attached drawing reference numerals are as follows: Moving traction cylinder 100, turbine rotor 200; Measuring tooling 300 for the diameter parameter of the carbon fiber cylinder; Vision measuring component 310, jaw distance adjusting component 320, sample shape adjusting component 330; Servo motor 321, first horizontal plate 322, second horizontal plate 323, vertical connecting rod 324, vertical moving block 325, end bearing 326, lead screw 327, horizontal moving seat assembly 328, horizontal moving seat 3281, connecting rod 3282, guide rail 3283; Sample placing seat 331, pneumatic jaw 332. Specific implementation manners

[0039] To make the objectives, technical solutions and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding attached drawings. Apparently, the described embodiments are only a part rather than all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0040] <Research difficulties> When the carbon fiber cylinder comes in, the cross-sectional shape is a curve. During use, it needs to be extruded into a circle. The existing methods cannot measure the circular radius of the carbon fiber cylinder when it comes in.

[0041] <I. Solution> (1) Theoretical circular diameter of the carbon fiber cylinder When the carbon fiber cylinder comes in, its cross-sectional shape is not circular. During the use stage, it needs to be extruded into a circle. In this process, the length of the inner surface of the carbon fiber cylinder remains basically unchanged. Based on this idea, analyze the inner surface trajectory line of the horizontal cross-section of the carbon fiber cylinder to determine its expression. When actually determining the theoretical circular radius r, first measure the parameters of the incoming carbon fiber cylinder, then obtain the perimeter of the trajectory line, and finally, use the invariant perimeter to obtain the theoretical circular diameter.

[0042] The inner surface trajectory line of the horizontal cross-section of the carbon fiber cylinder can adopt the following expression (as shown in Figure 2 where b = 200 mm and a = 205 mm): In the first quadrant, it can be expressed as: ; The curve lengths in the second quadrant, third quadrant, and fourth quadrant are the same as that in the first quadrant.

[0043] The above can be expressed in polar coordinate form as: In the first quadrant, it can be expressed as: R = b + 4(a - b)θ2 / π 2 (0 ≤ θ ≤ π / 2)。

[0044] Thus, it can be known that the curve length L is: 。

[0045] That is to say, the method for solving the theoretical circular radius of the carbon fiber cylinder is: First, measure the long radius a and short radius b of the inner surface of the incoming carbon fiber cylinder; Then, obtain the perimeter L of the curve: L = 2aπ / 3 + 4bπ / 3.

[0046] Again, solve the circular diameter d of the carbon fiber cylinder after being extruded: d = L / π.

[0047] (2) The actual circular diameter of the carbon fiber cylinder The carbon fiber cylinder needs to be extruded to become circular, that is, two sets of XY components are set on the carbon fiber cylinder for extrusion, and then the measurement is carried out in this way.

[0048] <II. A Measuring Tool for the Diameter Parameters of a Carbon Fiber Cylinder> As Figure 3 shown, a measuring tool 300 for the diameter parameters of a carbon fiber cylinder, which is used to measure the diameter of the carbon fiber cylinder, includes: a, a vision measurement component 310, which is used to measure the roundness of the carbon fiber cylinder in real time (the roundness is the difference between the long diameter and the short diameter); b, a jaw distance adjustment component 320, which is used to adjust the position of the sample shape adjustment component 330.

[0049] c, a sample shape adjustment component 330, which is used to extrude the carbon fiber cylinder into a circular shape.

[0050] Figure 4 Schematically shows the 3D design drawing of the jaw distance adjustment component 320. Figure 5 Schematically shows the vertical schematic diagram of the jaw distance adjustment component 320. The jaw distance adjustment component 320 includes: a servo motor 321, a first horizontal plate 322, a second horizontal plate 323, a vertical connecting rod 324, a vertical moving block 325, an end bearing 326, a lead screw 327, and 4 horizontal moving seat components 328; The housing of the servo motor 321 is fixedly connected to the first horizontal plate 322, and the first horizontal plate 322 and the second horizontal plate 323 are fixedly connected into one body through the vertical connecting rod 324; The output shaft of the servo motor 321 is connected to the lead screw 327. On the side of the second horizontal plate 323 facing the first horizontal plate 322, an end bearing 326 is fixedly arranged, and the end of the lead screw 327 is rotatably connected in the end bearing 326; A threaded hole is provided in the middle of the vertical moving block 325 and is threadedly connected to the lead screw 327; the vertical moving block 325 is arranged between the first horizontal plate 322 and the second horizontal plate 323.

[0051] Figure 6 The three-dimensional structure of the horizontal moving seat assembly is shown. Each horizontal moving seat assembly 328 includes: a horizontal moving seat 3281, a connecting rod 3282, and a guide rail 3283; the guide rail 3283 is fixed on the second horizontal plate 323, and the horizontal moving seat 3281 can be engaged with the guide rail 3283; both ends of the connecting rod 3282 are hingedly connected to the vertical moving block 325 and the horizontal moving seat 3281 respectively. When the servo motor 321 drives the lead screw 327 to rotate, the vertical moving block 325 can move up and down, so that the horizontal moving seat 3281 moves along the guide rail 3283.

[0052] The 4 horizontal moving seat assemblies are divided into 2 groups of horizontal moving seat assemblies. The moving directions of the horizontal moving seats of each group of horizontal moving seat assemblies are the same, and the moving directions of the horizontal moving seats of the 2 groups of horizontal moving seat assemblies are perpendicular to each other.

[0053] Figure 7 The structural design of the sample shape adjustment assembly is shown. The sample shape adjustment assembly 330 includes: 4 sample shape adjustment members, which are respectively arranged on the 4 horizontal moving seat assemblies; the sample shape adjustment member includes: a sample placement seat 331 and a pneumatic gripper 332; the sample placement seat 331 is placed on the upper surface of the horizontal moving seat, and the pneumatic gripper 332 is arranged on the sample placement seat 331. The 4 sample shape adjustment members are divided into 2 groups. The moving directions of the grippers of each group of sample shape adjustment members are the same and corresponding; and the moving directions of the 2 groups of sample shape adjustment members are perpendicular to each other.

[0054] The above-mentioned examples are the preferred embodiments of the present application, which are only used to facilitate the description of the present application and do not impose any form of limitation on the present application. Any person with ordinary knowledge in the technical field can, without departing from the technical features of the present application, make equivalent embodiments with partial changes or modifications using the technical content disclosed in the present application, and without departing from the technical feature content of the present application, still fall within the scope of the technical features of the present application.

Claims

1. A measuring tool for the diameter parameter of a carbon fiber cylinder, where the carbon fiber cylinder is the dynamic traction cylinder of a composite molecular pump, and is characterized in that, Including: A visual measurement component and 4 sample shape adjustment members; Wherein, the visual measurement component is used to obtain the long diameter, short diameter, and roundness of the carbon fiber cylinder; Wherein, in the initial state, the 4 sample shape adjustment members are arranged in a circular array and distributed around the carbon fiber cylinder; Wherein, the sample shape adjustment member includes a sample placement seat and a pneumatic gripper; the 4 sample placement seats together serve as the placement base of the carbon fiber cylinder; the 4 pneumatic grippers can extrude / loosen the carbon fiber cylinder by extending / shortening, thereby adjusting the roundness of the carbon fiber cylinder; Wherein, the pneumatic pressures of the 4 pneumatic grippers are in parallel, that is, during operation, the pneumatic pressures of the 4 pneumatic grippers are the same.

2. The diameter parameter measuring tooling for a carbon fiber cylinder according to claim 1, wherein The moving directions of the 4 pneumatic grippers are the radial directions of the circular array.

3. A measuring tool for the diameter parameter of a carbon fiber cylinder according to claim 1, characterized in that, Further including: Further including a gripper distance adjustment component, which is used to adjust the positions of the 4 sample shape adjustment members; The gripper distance adjustment component includes: a servo motor, a first horizontal plate, a second horizontal plate, a vertical connecting rod, a vertical moving block, an end bearing, a lead screw, and 4 horizontal moving seat components; the outer shell of the servo motor is fixedly connected to the first horizontal plate, and the first horizontal plate and the second horizontal plate are fixedly connected into one body through the vertical connecting rod; the output shaft of the servo motor is connected to the lead screw, and an end bearing is fixedly arranged on the side of the second horizontal plate facing the first horizontal plate, and the end of the lead screw is rotatably connected in the end bearing; a threaded hole is provided in the middle of the vertical moving block and is threadedly connected to the lead screw; the horizontal moving seat component includes: a horizontal moving seat and a connecting rod; both ends of the connecting rod are respectively hinged to the vertical moving block and the horizontal moving seat; when the servo motor drives the lead screw to rotate, the vertical moving block can move up and down, and further make the horizontal moving seat move in the horizontal plane; The structures of the 4 horizontal moving seat components are the same and are evenly distributed around with the vertical axis of the lead screw as the reference; the inclination angles between the connecting rods of the 4 horizontal moving seat components and the lead screw are the same, so that when the vertical moving block moves, the moving distances of the 4 horizontal moving seats are the same; The relationship between the gripper distance adjustment component and the sample shape adjustment member is: the 4 sample shape adjustment members are respectively arranged on the 4 horizontal moving seat components; the moving directions of the pneumatic grippers of the 4 sample shape adjustment members are the same as the moving directions of the 4 horizontal moving seats; The vertical center line of the lead screw passes through the center of the circular array of the 4 sample shape adjustment members.

4. The measuring tool for the diameter parameter of a carbon fiber cylinder according to claim 3, characterized in that, The vertical moving block is arranged between the first horizontal plate and the second horizontal plate.

5. A carbon fiber cylinder diameter parameter measuring tooling according to claim 3, characterized in that, The horizontal moving seat component further includes a guide rail, the guide rail is fixed on the second horizontal plate, and the horizontal moving seat can be engaged with the guide rail.

6. A method for measuring the diameter parameter of a carbon fiber cylinder, characterized in that, Using the carbon fiber cylinder diameter parameter measuring tooling described in claim 1 to measure the diameter parameters of the carbon fiber cylinder, it includes the following steps: S100, Place the carbon fiber cylinder on the 4 sample placement seats, and the central axis of the carbon fiber cylinder coincides with the axis of the lead screw; S200, Obtain the theoretical circular diameter of the carbon fiber cylinder and determine whether the carbon fiber cylinder is qualified; S200 includes the following sub-steps: S201. Obtain the long diameter A and short diameter B of the carbon fiber cylinder in an unconstrained state through the vision measurement component; S202. Calculate the perimeter L: L = Aπ / 3 + 2Bπ / 3; S203. Solve for the circular diameter r of the carbon fiber cylinder after being extruded: d = L / π; S204. Determine whether it is qualified: If d is within (d 阈值1 , d 阈值2 ), it is qualified and go to step S400; d 阈值1 , d 阈值2 represent the lower limit value and the upper limit value of the diameter threshold of the carbon fiber cylinder; Otherwise, it is unqualified and go to step S; S300. Obtain the actual circular diameter parameters of the carbon fiber cylinder, which includes the following sub-steps: S301. Gradually adjust the pressures P of the 4 pneumatic grippers to △P, 2△P, 3△P,..., n△P, and measure the roundness, long diameter, and short diameter parameters under the above different pressures through the vision measurement component; where △P represents the step pneumatic pressure and n represents the number of test steps; S302. Determine whether the test is correct: As P increases, if the roundness shows a trend of first decreasing and then increasing, the test is successful and go to step S303; Otherwise, the test is unsuccessful, return to step S100, and retest; S303. Determine the actual circular diameter parameters of the carbon fiber cylinder: Record the pneumatic gripper pressure, long diameter, and short diameter when the roundness is the smallest.

7. A method for measuring the diameter parameter of a carbon fiber tube according to claim 6, characterized in that, △P = 0.05 MPa.

8. A method for measuring the diameter parameter of a carbon fiber tube according to claim 7, characterized in that, The value range of n△P is [0.7 MPa, 1.0 MPa].

9. A pairing method for a carbon fiber cylinder and a turbine rotor, characterized in that, It includes the following steps: First, obtain the diameter parameters of the turbine rotor: long diameter d 涡轮长直径、 short diameter d 涡轮短直径 ; Secondly, obtain the diameter parameters of the carbon fiber cylinder by using the measurement method as claimed in claim 6: major diameter d 碳纤维筒长直径 , minor diameter d 碳纤维筒短直径 ; Again, determine whether pairing is possible: If the following is satisfied: d 碳纤维筒长直径 -d 涡轮短直径 <Gap threshold max ,d 碳纤维筒短直径 -d 涡轮长直径 >Gap threshold min ,then the pairing is successful; Otherwise, the pairing is unsuccessful; Among them, the gap threshold max and the gap threshold min respectively represent the upper limit value and the lower limit value of the gap threshold.

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