A shape and position detection device and detection evaluation method for a grid-type cylindrical ground rail

Abstract

This invention discloses a form and position detection device and method for a grid-type cylindrical ground rail, comprising: an axis detection component, a plane detection component, a level, and a measuring target; each axis detection component is an isosceles triangular plate, placed on a transverse or longitudinal cylindrical ground rail via two directional inner circular grooves on its bottom; the longitudinal or transverse levelness of the axis detection component is adjusted using a level and adjusting bolts; and the straightness, parallelism, and levelness of each transverse and longitudinal cylindrical ground rail are measured using the measuring target; each plane detection component is an octagonal plate, placed on a four-way joint via four positioning inner circular grooves on its bottom; the levelness of the four-way joint is measured using a level; and the position of the four-way joint is measured using a measuring target in conjunction with a laser tracker. This invention achieves low-cost, high-efficiency, and accurate form and position detection and evaluation of grid-type cylindrical ground rails with large size, large load, and alternating load characteristics.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of aircraft mobile assembly production technology, and particularly to a form and position detection device and detection and evaluation method for a grid-type cylindrical ground rail. Background Technology

[0002] The ground of the aircraft mobile assembly line is laid with many rails to facilitate the precise movement and relocation of large tooling and equipment. The dimensional and positional tolerances of the rails (specifically including the straightness of a single rail, the parallelism of rail alignments, and the levelness of the entire rail) have a significant impact on the safety, quality, and efficiency of the aircraft mobile assembly line, requiring timely maintenance. However, the rails of the aircraft mobile assembly line are characterized by large size, heavy load, alternating load, and significant influence from foundation settlement, making them prone to dimensional and positional deviations.

[0003] Existing ground-rail-type aircraft mobile assembly lines come in various forms, including linear reciprocating movement, herringbone reciprocating movement, and rectangular rotary movement. However, the crisscrossing grid-type ground rails are far more complex than these types, and the workload for form and position inspection is also much greater. In addition, existing ground rails in aircraft mobile assembly lines have rectangular, I-beam, and dovetail cross-sections. These cross-sections are relatively easy to level and position with fixtures, while cylindrical ground rails, with their circular cross-sections, are difficult to level and position with fixtures. Furthermore, existing ground rail inspection devices and methods typically include high-precision tape measure inspection, dial indicator (or micrometer) inspection, total station inspection, laser interferometer inspection, laser tracker inspection, and track inspection vehicle inspection. Some of these methods have low accuracy, some are too costly, and some are too cumbersome.

[0004] To address the challenges of form and position detection and evaluation of grid-type cylindrical ground rails characterized by large size, heavy loads, and alternating loads, research was conducted on related detection devices and evaluation methods. Summary of the Invention

[0005] The purpose of this invention is to provide a form and position detection device and a detection and evaluation method for grid-type cylindrical ground rails with large size, large load and alternating load characteristics in a low-cost, efficient and accurate manner.

[0006] The technical solution of the present invention: In a first aspect, the embodiments of the present invention provide a form and position detection device for a grid-type cylindrical ground rail, which is embedded in the foundation 4 of the production line. The grid-type cylindrical ground rail includes M (M≥2) rows of mutually parallel transverse cylindrical ground rails 1, N (N≥2) columns of mutually parallel longitudinal cylindrical ground rails 2, M*N four-way connectors 3 for connecting the transverse cylindrical ground rails 1 and the longitudinal cylindrical ground rails 2, and a reference coordinate system R calibrated based on multiple coordinate system marker points 5. oxyz The reference coordinate system R oxyzThe X and Y axes are parallel to the axis of the transverse cylindrical ground rail 1 and the axis of the longitudinal cylindrical ground rail 2, respectively; the four-way component 3 is provided with four centrally symmetrical inner circular grooves, and adjacent inner circular grooves form a 90° angle; the shape and position detection device of the grid-type cylindrical ground rail includes: at least one axis detection component 7 and at least one plane detection component 8, as well as a level 9 and a measuring target 10;

[0007] Each axis detection component 7 is configured as an isosceles triangular plate, which is placed on a transverse cylindrical ground rail 1 or a longitudinal cylindrical ground rail 2 by means of two directional inner circular grooves 12 coaxially set at both ends on one side of the bottom of the plate. The longitudinal or transverse level of the axis detection component 7 is adjusted by means of a level 9 set on its upper plane and an adjusting bolt 16 screwed to the apex position. The straightness, parallelism and level of each transverse cylindrical ground rail 1 and each longitudinal cylindrical ground rail 2 are measured by means of a measuring target 10 set on the axis detection component 7.

[0008] Each of the planar detection components 8 is configured as an octagonal plate, which is placed on the four-way component 3 by means of four positioning inner circular grooves 20 symmetrically arranged at the bottom center of its plate. The levelness of the four-way component 3 is measured by two levels 9 on its upper plane in the horizontal and vertical directions respectively, and the position of the four-way component 3 is measured by a measuring target 10 set on the planar detection component 8 in conjunction with a laser tracker 11.

[0009] Optionally, in the form and position detection device of the grid-type cylindrical ground rail as described above, each axis detection component 7, which is set as an isosceles triangular plate, is provided with: two directional inner circular grooves 12, a straight inner circular groove 13, a first transition plane 14, a first transition circular hole 15, and an adjusting bolt 16.

[0010] Two directional inner circular grooves 12 with the same diameter are provided on the lower surface of the axis detection component 7 and located at both ends of one side of the base of the isosceles triangular plate. A straight inner circular groove 13 is sandwiched between the two directional inner circular grooves 12, and the three inner circular grooves are coaxially arranged. The upper surface of the axis detection component 7 is the first transition plane 14, which is parallel to the axis 18 of the directional inner circular groove 12. The first transition circular hole 15 penetrates the axis detection component 7 vertically and is located in the middle of the straight inner circular groove 13. Its axis 19 intersects the axis 18 of the straight inner circular groove 13 perpendicularly and is perpendicular to the first transition plane 14. The adjusting bolt 16 is screwed into the threaded hole 17 located at the apex of the axis detection component 7 and penetrates the axis detection component 7 vertically. It is used to extend or shorten by screwing in the threaded hole 17.

[0011] When the axis detection component 7 measures each transverse cylindrical ground rail 1 and each longitudinal cylindrical ground rail 2, it forms a rotating pair by attaching with a single transverse cylindrical ground rail 1 or a single longitudinal cylindrical ground rail 2 through two directional inner circular grooves 1.

[0012] Optionally, in the form and position detection device for the grid-type cylindrical ground rail as described above,

[0013] During use, the base of a level 9 used in conjunction with the axis detection component 7 is in contact with the first transition plane 14 of the axis detection component 7; the cylindrical tail rod of the measuring target 10 of the laser tracker is inserted into its first transition hole 15, and its optical reflecting ball is located on the first transition plane 14.

[0014] When the axis detection component 7 is in contact with the transverse cylindrical ground rail 1, the level 9 is placed longitudinally on the first transition plane 14 of the axis detection component 7, and the measurement is performed by adjusting the axis detection component 7 to a longitudinally horizontal state.

[0015] When the axis detection component 7 is in contact with the longitudinal cylindrical ground rail 1, the level 9 is placed on the first transition plane 14 of the axis detection component 7 in a transverse direction, and the measurement is performed by adjusting the axis detection component 7 to a transversely horizontal state.

[0016] Optionally, in the form and position detection device for the grid-type cylindrical ground rail as described above, each plane detection component 8, which is set as an octagonal flat plate, is provided with: four positioning inner circular grooves 20, a second transition plane 21, and a second transition circular hole 22.

[0017] Four identical positioning inner circular grooves 20 are arranged on the lower surface of the planar detection component 8, and are centrally symmetrically distributed. The axes of the four positioning inner circular grooves 20 are coplanar, and the axes of two adjacent positioning inner circular grooves 20 are perpendicular. The upper surface of the planar detection component 8 is the second transition plane 21, which is parallel to the axes 23 of the four positioning inner circular grooves 20. The second transition circular hole 22 penetrates the planar detection component 8 vertically and is perpendicular to the second transition plane 21. The axis 24 of the second transition circular hole 22 intersects the axes 23 of the four positioning inner circular grooves 20 perpendicularly. The diameter of the first transition circular hole 15 of the axis detection component 7 is equal to the diameter of the second transition circular hole 21 of the planar detection component 8.

[0018] During use, the planar detection component 8 is in contact with the four cylindrical ground rails fixed by the four-way component 3 through the four positioning inner circular grooves 20.

[0019] Optionally, in the form and position detection device for the grid-type cylindrical ground rail as described above,

[0020] During use, the bases of the two levels 9 used in conjunction with the planar detection component 8 are respectively in contact with the second transition plane 21 of the planar detection component 8 in the horizontal and vertical directions; the cylindrical tail rod of the measuring target 10 of the laser tracker is inserted into its second transition hole 22, so that the optical reflecting ball is located on the second transition plane 21.

[0021] Secondly, embodiments of the present invention also provide a method for detecting and evaluating a grid-type cylindrical ground rail. The method employs a form and position detection device for the grid-type cylindrical ground rail as provided in any of the above claims to perform the detection and evaluation method on the grid-type cylindrical ground rail, specifically including the following steps:

[0022] Step 1, establish the reference coordinate system R. oxyz The coordinate system markers of all the aforementioned points were measured relative to the laser tracker coordinate system L using a laser tracker. oxyz The measured coordinates, and the coordinates of all the coordinate system markers relative to the reference coordinate system R. oxyz The calibration coordinates are matched using the least squares method to establish the aforementioned reference coordinate system R. oxyz ;

[0023] Step 2, construct a standard CAD model for geometrical position detection: import and assemble the aforementioned reference coordinate system R in the CAD software in situ. oxyz The three-dimensional models of the horizontal cylindrical ground rail, the vertical cylindrical ground rail, and the four-way connector;

[0024] Step 3: Detect and evaluate the levelness and position of the MN four-way connectors relative to the reference coordinate system;

[0025] Step 4: Inspect and evaluate the straightness, parallelism, and levelness of the M-row transverse cylindrical ground rail 1;

[0026] Step 5: Inspect and evaluate the straightness, parallelism, and levelness of the N longitudinal cylindrical ground rails 2;

[0027] Step 6: Evaluate the verticality of the M-row transverse cylindrical track 1 and the N-column longitudinal cylindrical track 2.

[0028] Optionally, in the detection and evaluation method for the grid-type cylindrical ground rail described above, step 3 includes:

[0029] Step 3-1, Inspection preparation, including: aligning at least one planar inspection component with the two transverse cylindrical rails 1 and two longitudinal cylindrical rails 2 fixed by the four-way connector 3 in the i-th (1≤i≤M) row and j-th (1≤i≤N) column of the cylindrical rail through four positioning inner circular grooves;

[0030] Step 3-2: Detect the levelness of the four-way components in the i-th row and j-th column of the cylindrical ground rail, including: Two spirit levels 9 are respectively arranged in the second transfer plane 21 of each plane detection component 8 in the transverse direction and the longitudinal direction to measure the transverse tilt angle of each plane detection component 8 and the corresponding four-way component 3 and the longitudinal tilt angle

[0031] Step 3-3: Evaluate the levelness of the four-way components set at the positions of the i-th row and j-th column on the cylindrical ground rail: When the transverse tilt angle measured in Step 3-2 and the said longitudinal tilt angle are both within the allowable levelness range, it is judged that the levelness of the measured four-way component is qualified;

[0032] Step 3-4: Detect the position accuracy of the four-way components in the i-th row and j-th column of the cylindrical ground rail, including: A measuring target 10 is inserted into the second transfer round hole 22 of each plane detection component 8, and the three-dimensional coordinates of the measuring target 10 relative to the reference coordinate system are measured by a laser tracker

[0033]

[0034] Step 3-5: Evaluate the position accuracy of the four-way components set at the positions of the i-th row and j-th column in the cylindrical ground rail: When each coordinate value in the three-dimensional coordinates measured in Step 3-4 is within the allowable position accuracy range of the said standard CAD model, it is judged that the position accuracy of the measured four-way component is qualified.

[0035] Optionally, in the detection and evaluation method of the grid-type cylindrical ground rail as described above, the said Step 4 includes:

[0036] Step 4-1: Detection preparation, including: Set P detection points on the i-th row transverse cylindrical ground rail 1, fit the axis detection component 7 to the position of the k-th detection point on the i-th row transverse cylindrical ground rail 1 through its two directional inner circular grooves 12 (1 ≤ i ≤ P), and one spirit level 9 is arranged on the first transfer plane 14 of the axis detection component 7 in the longitudinal direction. By rotating the feed amount of the adjusting bolt 16 in the axis detection component 7, the spirit level 9 and the axis detection component are in the longitudinal horizontal state;

[0037] Step 4-2: Detect the coordinates of the i-th row transverse cylindrical ground rail 1 at the position of the k-th detection point, including: A measuring target 10 is inserted into the first transfer round hole 15 of the axis detection component 7 set at the position of the k-th detection point on the i-th row transverse cylindrical ground rail 1, and the three-dimensional coordinates of the measuring target 10 relative to the reference coordinate system are measured by a laser tracker 11

[0038] Step 4-3, evaluate the straightness of the i-th row of transverse cylindrical ground track 1, including: the three-dimensional coordinates of P detection points on the i-th row of transverse cylindrical ground track 1. If each coordinate value in the model is within the straightness range allowed by the standard CAD model, then the straightness of the i-th row of transverse cylindrical ground rail 1 is deemed to be qualified.

[0039] Step 4-4, evaluate the parallelism of the M rows of transverse cylindrical tracks 1, including: the three-dimensional coordinates of the M*P detection points in all transverse cylindrical tracks 1. If each coordinate value in the model is within the flatness range allowed by the standard CAD model, then the parallelism of the M-row transverse cylindrical ground rail 1 is deemed acceptable.

[0040] Steps 4-5 assess the levelness of the M-row transverse cylindrical track 1, including: the three-dimensional coordinates of the M*P detection points in all transverse cylindrical tracks 1. If each coordinate value in the model is within the levelness range allowed by the standard CAD model, then the levelness of the M-row transverse cylindrical ground rail 1 is deemed acceptable.

[0041] Optionally, in the detection and evaluation method for the grid-type cylindrical ground rail described above, step 5 includes:

[0042] Step 5-1, Inspection Preparation, includes: setting Q inspection points on the j-th column longitudinal cylindrical ground rail 2, fitting the axis detection component 7 with the l-th inspection point on the j-th row longitudinal cylindrical ground rail 2 through its two directional inner circular grooves 12 (1≤l≤Q), and placing a level 9 on the first transition plane 14 of the axis detection component 7 in the transverse direction, and adjusting the feed amount of the adjusting bolt 16 in the axis detection component 7 to make the level 9 and the axis detection component in a transverse horizontal state;

[0043] Step 5-2, detecting the coordinates of the j-th column longitudinal cylindrical ground rail 2 at the l-th detection point, includes: inserting a measuring target 10 into the first transition hole 15 of the axis detection component 7 located at the l-th detection point on the j-th column longitudinal cylindrical ground rail 2, and measuring the three-dimensional coordinates of the measuring target 10 relative to the reference coordinate system using a laser tracker 11.

[0044] Step 5-3, evaluate the straightness of the j-th column longitudinal cylindrical track 2, including: the three-dimensional coordinates of Q detection points on the j-th column longitudinal cylindrical track 2. If each coordinate value in the model is within the straightness range allowed by the standard CAD model, then the straightness of the longitudinal cylindrical ground rail 2 in column j is deemed to be qualified.

[0045] Step 5-4: Evaluate the parallelism of the N longitudinal cylindrical tracks 2, including: the three-dimensional coordinates of N*Q detection points in all longitudinal cylindrical tracks 2. If each coordinate value in the model is within the flatness range allowed by the standard CAD model, then the parallelism of the N-column longitudinal cylindrical ground rail 2 is deemed acceptable.

[0046] Step 5-5: Evaluate the levelness of the N longitudinal cylindrical tracks 2, including: the three-dimensional coordinates of N*Q detection points in all longitudinal cylindrical tracks 2. If each coordinate value in the model is within the levelness range allowed by the standard CAD model, then the levelness of column N longitudinal cylindrical ground rail 2 is deemed acceptable.

[0047] Optionally, in the detection and evaluation method for the grid-type cylindrical ground rail described above, step 6 includes:

[0048] The three-dimensional coordinates of P detection points in each row of transverse cylindrical track 1 in the cylindrical track. and the three-dimensional coordinates of Q detection points in each longitudinal cylindrical ground rail 2 If each coordinate value in the model is within the verticality range allowed by the standard CAD model, then the verticality of the M-row horizontal cylindrical ground rail 1 and the N-column vertical cylindrical ground rail 2 is deemed to be qualified.

[0049] The beneficial effects of the present invention: The embodiments of the present invention provide a form and position detection device and a detection and evaluation method for a grid-type cylindrical ground rail. Based on the structural form of the grid-type cylindrical ground rail in the production line foundation 4, the form and position detection device for this grid-type cylindrical ground rail includes: at least one axis detection component 7 and at least one plane detection component 8, as well as a level 9 and a measuring target 10; wherein, the axis detection component 7, configured as an isosceles triangular plate, is used to measure the straightness, parallelism, and levelness of each transverse cylindrical ground rail 1 and each longitudinal cylindrical ground rail 2; the plane detection component 8, configured as an octagonal plate, is used to measure the position of the four-way component 3. Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following significant advantages:

[0050] (1) The types of large heavy-duty grid-type cylindrical ground rail form and position detection have been unified. The existing guide rail straightness detection based on interferometer, guide rail parallelism detection based on dial indicator, and guide rail levelness detection based on total station have been unified into coordinate detection based on reference coordinate system and laser tracker.

[0051] (2) Improved the accuracy of shape and position detection of large heavy-duty grid cylindrical ground rails. Compared with the existing overall detection based on the superposition of multiple local detections, the method of the present invention is an absolute overall detection method, which reduces a lot of data transmission errors.

[0052] (3) It improves the efficiency of shape and position detection of large heavy-duty grid cylindrical ground rails. The shape and position detection device of the present invention has fewer installation and adjustment steps, is easy to operate and convenient, and the data is easy to save. Attached Figure Description

[0053] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0054] Figure 1 This is a schematic diagram of the overall structure of the grid-type cylindrical ground rail of the aircraft mobile assembly production line in an embodiment of the present invention;

[0055] Figure 2 for Figure 1 Enlarged partial schematic diagram of the horizontal cylindrical ground rail, the longitudinal cylindrical ground rail, and the four-way connector in the embedded foundation section of the central area I (not shown).

[0056] Figure 3 for Figure 1 A partially enlarged schematic diagram of the transverse cylindrical ground rail, the longitudinal cylindrical ground rail, and the four-way connector in the central area I;

[0057] Figure 4 This is a schematic diagram showing the placement of the shape and position detection device provided in an embodiment of the present invention within a grid-type cylindrical ground track.

[0058] Figure 5 for Figure 4 An enlarged schematic diagram of the form and position detection device provided in the embodiment shown;

[0059] Figure 6 To adopt Figure 5 The illustrated embodiment provides a schematic diagram of the principle of the form and position detection device performing detection on the four-way component in a grid-type cylindrical ground rail;

[0060] Figure 7 To adopt Figure 5 The illustrated embodiment provides a schematic diagram of the principle by which the form and position detection device performs detection on the cylindrical ground rail in a grid-type cylindrical ground rail.

[0061] Figure 8 for Figure 5 A front axonometric view of the planar detection component in the form and position detection device provided in the illustrated embodiment.

[0062] Figure 9 for Figure 8 Reverse axonometric view of the plane detection component in the form and position detection device provided in the embodiment shown.

[0063] Figure 10 for Figure 5 A front axonometric view of the axis detection component in the form and position detection device provided in the embodiment shown;

[0064] Figure 11 for Figure 10 Reverse axonometric view of the axis detection component in the form and position detection device provided in the embodiment shown.

[0065] Figure 12 A flowchart illustrating a detection and evaluation method for a grid-type cylindrical ground rail provided in an embodiment of the present invention.

[0066] Explanation of reference numerals in the attached figures:

[0067] 1. Horizontal cylindrical ground rail, 2. Longitudinal cylindrical ground rail, 3. Four-way connector, 4. Production line foundation, 5. Coordinate system marker, 6. Inner circular groove, 7. Axis detection assembly, 8. Plane detection assembly, 9. Level, 10. Measuring target, 11. Laser tracker, 12. Oriented inner circular groove, 13. Straight through inner circular groove, 14. First transition plane, 15. First transition hole, 16. Adjusting bolt, 17. Threaded hole, 18. Axis of the directional inner circular groove, 19. Axis of the first transition hole, 20. Positioning inner circular groove, 21. Second transition plane, 22. Second transition hole, 23. Axis of the positioning inner circular groove, 24. Axis of the second transition hole. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0069] To achieve low-cost, high-efficiency, and accurate form and position detection and evaluation of grid-type cylindrical ground rails with large size, large load, and alternating load characteristics, embodiments of the present invention provide a form and position detection device and detection and evaluation method for grid-type cylindrical ground rails.

[0070] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0071] The application of this invention is a grid-type cylindrical ground track in an aircraft mobile assembly production line, such as... Figure 1 The diagram shows the overall structure of the grid-type cylindrical ground rails in the aircraft mobile assembly production line according to an embodiment of the present invention. The grid-type cylindrical ground rails, embedded in the production line foundation 4, include 8 rows of parallel transverse cylindrical ground rails 1, 8 columns of parallel longitudinal cylindrical ground rails 2, 64 four-way connectors 3 connecting the transverse cylindrical ground rails 1 and the longitudinal cylindrical ground rails 2, and a reference coordinate system R calibrated based on 36 coordinate system marker points 5. oxyz Reference coordinate system R oxyz The X and Y axes are parallel to the axis of the transverse cylindrical ground rail 1 and the axis of the longitudinal cylindrical ground rail 2, respectively; the four-way component 3 includes four centrally symmetrical inner circular grooves 6 arranged at a 90° angle.

[0072] like Figure 4 , Figure 5 , Figure 6and Figure 7 The diagram shown is a schematic diagram of the shape and position detection device for a grid-type cylindrical ground rail provided in an embodiment of the present invention, including: at least one axis detection component 7 and at least one plane detection component 8.

[0073] See details Figure 7 , Figure 10 and Figure 11 As shown, the axis detection component 7 in this embodiment of the invention is configured as an isosceles triangular plate. The axis detection component 7 includes: two directional inner circular grooves 12, a straight inner circular groove 13, a first transition plane 14, a first transition hole 15, and an adjusting bolt 16. Specifically: the two directional inner circular grooves 12 are located at both ends of one base side of the isosceles triangle on the lower surface of the axis detection component 7, and are coaxial with equal diameters; the diameter of the straight inner circular groove 13 is larger than the diameter of the directional inner circular grooves 12, and is sandwiched between the two directional inner circular grooves 12, and is coaxial with the directional inner circular grooves 12; the first transition plane 14 is located on the upper surface of the axis detection component 7, and is coaxial with the axis of the directional inner circular grooves 12. Line 18 is parallel; the first transition hole 15 penetrates the upper and lower surfaces of the axis detection assembly 7 and is perpendicular to the upper surface. The first transition hole 15 is located in the middle of the straight inner circular groove 13, and its axis 19 intersects perpendicularly with the axis 18 of the straight inner circular groove 13 and is perpendicular to the first transition plane 14; the adjusting bolt 16 is screwed into the threaded hole 17 located at the top corner of the axis detection assembly 7 and penetrates the upper and lower surfaces of the axis detection assembly 7 vertically, for extending or shortening in the threaded hole 17.

[0074] In this embodiment of the invention, the axis detection component 7 measures the straightness, parallelism, and levelness of each transverse cylindrical ground rail 1 and each longitudinal cylindrical ground rail 2 using a level 9 and a measuring target 10. During use, the two directional inner circular grooves 12 are attached to a single transverse cylindrical ground rail 1 or a single longitudinal cylindrical ground rail 2 to form a rotating pair. The levelness of the four-way component 3 is measured by two levels 9 on its upper plane in the transverse and longitudinal directions, respectively, and the position of the four-way component 3 is measured by a measuring target 10 set on the plane detection component 8 in conjunction with a laser tracker 11.

[0075] In one specific embodiment of the present invention, the outer dimensions of the axis detection component 7 are 300mm in length, 250mm in width, and 18mm in thickness, and the material is Q235 steel. In order to reduce the weight of the axis detection component 7 for easy handling and assembly, two right-angled triangular weight-reducing holes are provided on the axis detection component 7.

[0076] See details Figure 6 , Figure 8 and Figure 9As shown, the planar detection component 8 in this embodiment of the invention is an octagonal plate. The planar detection component 8 is provided with: four positioning inner circular grooves 20, a second transition plane 21, and a second transition circular hole 22. Specifically: the four positioning inner circular grooves 20 are respectively located at the four mutually perpendicular ends of the lower surface of the planar detection component 8; the axes of the four positioning inner circular grooves 20 are coplanar, and the axes of adjacent two positioning inner circular grooves 20 are perpendicular; the four positioning inner circular grooves 20 are centrally symmetrically distributed, and their diameters are equal; the second transition plane 21 is located on the upper surface of the planar detection component 8, and the second transition plane 21 is parallel to the axes 23 of the four positioning inner circular grooves 20; the second transition circular hole 22 penetrates the upper and lower surfaces at the center of the planar detection component 8, and is perpendicular to the upper surface; the axis 24 of the second transition circular hole 22 intersects perpendicularly with the axes 23 of the four positioning inner circular grooves 20.

[0077] In this embodiment of the invention, the planar detection component 8 measures the levelness and position of the four-way component 3 by using a level 9 and a measuring target 10 in conjunction. During use, the four positioning inner circular grooves 20 of the planar detection component 8 are all in contact with the four cylindrical ground rails fixed to the four-way component 3.

[0078] In one specific embodiment of the present invention, the outer dimensions of the planar detection component 8 are 260mm in length, 260mm in width, and 18mm in thickness, and the material is Q235 steel. In order to reduce the weight of the axis detection component 7 for easy handling and assembly, four right-angled triangular weight-reducing holes are provided on the axis detection component 7.

[0079] like Figure 6 The level 9 shown has its base fitted with the second transition plane 21 of the plane detection assembly 8, and is used to detect the levelness of the four-way connector 3. Figure 7 The level 9 shown has its base in contact with the first transition plane 14 of the axis detection component 7, which is used to make the longitudinal direction (when the axis detection component 7 is in contact with the transverse cylindrical ground rail 1) or the transverse direction (when the axis detection component 7 is in contact with the longitudinal cylindrical ground rail 1) of the axis detection component 7 horizontal.

[0080] like Figure 6 and Figure 7 The measurement target 10 of the laser tracker shown has a cylindrical tail rod on one side and an optical reflective sphere on the other side. The measurement target 10 is inserted into the first transition hole 15 of the axis detection assembly 7 with its cylindrical tail rod, so that the optical reflective sphere is located on the first transition plane 14. The measurement target 10 is also inserted into the second transition hole 22 of the plane detection assembly 8 with its cylindrical tail rod, so that the optical reflective sphere is located on the second transition plane 21.

[0081] Furthermore, in one specific embodiment, the diameter of the directional inner circular groove 12 of the axis detection component 7 and the diameter of the positioning inner circular groove 20 of the plane detection component 8 are equal, both being 50 mm. Additionally, the diameter of the first transition hole 15 of the axis detection component 7 and the diameter of the second transition hole 22 of the plane detection component 8 are equal, and they fit tightly with the cylindrical tail rod of the measuring target 10, both being 6.35 mm.

[0082] This invention also provides a method for detecting a grid-type cylindrical ground rail. The method uses the form and position detection device for the grid-type cylindrical ground rail provided in any of the above embodiments to detect the form and position tolerances of the grid-type cylindrical ground rail. Specifically, it includes the following steps:

[0083] Step 1: Establish a reference coordinate system R based on coordinate system marker point 5 in the grid-type cylindrical ground rail. oxyz This includes: using laser tracker 11 to measure the coordinate system markers 5 relative to the laser tracker coordinate system L. oxyz The measured coordinates, and the coordinates of each coordinate system marker point 5 relative to the aforementioned reference coordinate system R. oxyz The calibration coordinates are matched using the least squares method to establish the reference coordinate system R. oxyz ;

[0084] Step 2: Construct a standard CAD model for geometrical position detection, including: importing and assembling the reference coordinate system R in situ in CAD software. oxyz The three-dimensional models of the transverse cylindrical ground rail 1, the longitudinal cylindrical ground rail 2, and the four-way connector 3;

[0085] Step 3: Detect and evaluate the M*N four-way connectors 3 relative to the reference coordinate system R oxyz The levelness and position of the object; step 3 includes the following sub-steps:

[0086] Step 3-1, Inspection preparation, including: aligning at least one planar inspection component 8 with the two transverse cylindrical rails 1 and two longitudinal cylindrical rails 2 fixed by the four-way connector 3 in the i-th (1≤i≤M) row and j-th (1≤i≤N) column of the cylindrical rail through four positioning inner circular grooves 20;

[0087] Step 3-2, detecting the levelness of the four-way connectors 3 in the i-th row and j-th column of the cylindrical track, includes: placing two levels 9 on the second transition plane 21 of the plane detection device 8, which is mounted on the four-way connectors 3 in the i-th row and j-th column of the cylindrical track, respectively, in the lateral and longitudinal directions, and measuring the lateral tilt angle of the plane detection device 8 and the corresponding four-way connector 3 at the i-th row and j-th column positions of the cylindrical track. and longitudinal tilt angle

[0088] Step 3-3, evaluate the levelness of the four-way part 3 set at the i-th row and j-th column positions on the cylindrical ground rail: Only when the lateral tilt angle and the longitudinal tilt angle are both within the allowable levelness range is it considered qualified;

[0089] Step 3-4, detect the positional tolerance of the four-way part 3 in the i-th row and j-th column of the cylindrical ground rail. The detection method is as follows: Insert the measurement target 10 into the second transfer round hole 22 of the plane detection device 8 set on the four-way part at the i-th row and j-th column of the cylindrical ground rail, and measure the three-dimensional coordinates of the measurement target 10 relative to the reference coordinate system R oxyz through the laser tracker 11

[0090] Step 3-5, evaluate the positional tolerance of the four-way part 3 set at the i-th row and j-th column positions in the cylindrical ground rail: Only when each coordinate value in the three-dimensional coordinates is within the positional tolerance range allowed by the said standard CAD model is it considered qualified;

[0091] Step 4: Detect and evaluate the straightness, parallelism and levelness of the M-row horizontal cylindrical ground rail 1; This step 4 includes the following sub-steps:

[0092] Step 4-1, detection preparation: Set P detection points on the i-th row of the said horizontal cylindrical ground rail 1, fit the axis detection component 7 to the position of the k-th detection point on the i-th row of the horizontal cylindrical ground rail 1 through two directional inner circular grooves 12 (1≤i≤P), and place a level 9 longitudinally on the first transfer plane 14 of the axis detection device 7. By rotating the feed amount of the adjustment bolt 16, make the level 9 and the said axis detection component 7 in a longitudinal horizontal state;

[0093] Step 4-2, detect the coordinates of the i-th row of the horizontal cylindrical ground rail 1 at the position of the k-th detection point. The detection method is as follows: Insert the measurement target 10 into the first transfer round hole 15 of the axis detection component 7 set at the position of the k-th detection point on the i-th row of the horizontal cylindrical ground rail 1, and measure the three-dimensional coordinates of the said measurement target 10 relative to the reference coordinate system R oxyz through the laser tracker 11

[0094] Step 4-3, evaluate the straightness of the i-th row of the horizontal cylindrical ground rail 1: Only when each coordinate value in the three-dimensional coordinates of the P detection points on the i-th row of the horizontal cylindrical ground rail 1 is within the straightness range allowed by the said standard CAD model, the straightness of the i-th row of the horizontal cylindrical ground rail 1 is considered qualified;

[0095] Step 4-4, evaluate the parallelism of the transverse cylindrical track 1 described in line M: only when the three-dimensional coordinates of the M*P (MP = M×P) detection points in all transverse cylindrical tracks 1 are... For the parallelism of the M-row transverse cylindrical ground rail 1 to be considered acceptable, each coordinate value must be within the flatness range allowed by the standard CAD model.

[0096] Steps 4-5: Evaluate the levelness of the transverse cylindrical track 1 described in line M: Only when the three-dimensional coordinates of the M*P detection points in all transverse cylindrical tracks 1 are... The horizontal level of the M-row transverse cylindrical ground rail 1 is considered acceptable only if each coordinate value in the model is within the levelness range allowed by the standard CAD model.

[0097] Step 5: Inspect and evaluate the straightness, parallelism, and levelness of the N columns of longitudinal cylindrical rails 2; this step 5 includes the following sub-steps:

[0098] Step 5-1, Inspection Preparation: Assume that there are Q inspection points on the j-th column longitudinal cylindrical rail 2. Place the axis inspection component 7 with the l-th inspection point (1≤l≤Q) on the j-th row longitudinal cylindrical rail 2 through its two directional inner circular grooves 12. Place a level 9 in the first transition plane 14 of the axis inspection component 7 in the horizontal direction. Adjust the feed amount by rotating the adjusting bolt 16 to make the level 9 and the axis inspection component 7 in a horizontally horizontal state.

[0099] Step 5-2, detecting the coordinates of the j-th column longitudinal cylindrical track 2 at the l-th detection point, includes: inserting the measuring target 10 into the first adapter hole 15 of the axis detection assembly 7 at the l-th detection point on the j-th column longitudinal cylindrical track 2, and measuring the coordinates of the measuring target 10 relative to the reference coordinate system R using the laser tracker 11. oxyz 3D coordinates

[0100]

[0101] Step 5-3, evaluate the straightness of the j-th column longitudinal cylindrical track 2: only when the three-dimensional coordinates of the Q detection points on the j-th column longitudinal cylindrical track 2 are... The straightness of the longitudinal cylindrical ground rail 2 in column j is considered acceptable only if each coordinate value is within the straightness range allowed by the standard CAD model.

[0102] Step 5-4, evaluate the parallelism of the N columns of longitudinal cylindrical tracks: only when the three-dimensional coordinates of the N*Q detection points in all longitudinal cylindrical tracks 2 are... The parallelism of the N-column longitudinal cylindrical ground rail 2 is considered acceptable only if each coordinate value is within the flatness range allowed by the standard CAD model.

[0103] Step 5-5, evaluate the levelness of the N columns of longitudinal cylindrical tracks: only when the three-dimensional coordinates of the N*Q detection points in all longitudinal cylindrical tracks 2 are... The horizontality of column N longitudinal cylindrical ground rail 2 is considered acceptable only if each coordinate value is within the horizontality range allowed by the standard CAD model.

[0104] Step 6: Evaluate the perpendicularity of the transverse cylindrical track 1 in row M and the longitudinal cylindrical track 2 in column N: Only when the three-dimensional coordinates of P detection points in any row i of the transverse cylindrical track 1 are... and the three-dimensional coordinates of Q detection points in any j-th row of the longitudinal cylindrical ground track 2 For the verticality of the M-row horizontal cylindrical ground rail 1 and the N-column vertical cylindrical ground rail 2 to be considered acceptable, each coordinate value must be within the verticality range allowed by the standard CAD model.

[0105] This invention provides a form and position detection device and method for a grid-type cylindrical floor rail. Based on the structural form of the grid-type cylindrical floor rail in the production line foundation 4, the form and position detection device for this grid-type cylindrical floor rail includes: at least one axis detection component 7 and at least one plane detection component 8, as well as a level 9 and a measuring target 10. The axis detection component 7, configured as an isosceles triangular plate, is used to measure the straightness, parallelism, and levelness of each transverse cylindrical floor rail 1 and each longitudinal cylindrical floor rail 2. The plane detection component 8, configured as an octagonal plate, is used to measure the position of the four-way connector 3. Compared with the prior art, the technical solution provided by this invention has the following significant advantages:

[0106] (1) The types of large heavy-duty grid-type cylindrical ground rail form and position detection have been unified. The existing guide rail straightness detection based on interferometer, guide rail parallelism detection based on dial indicator, and guide rail levelness detection based on total station have been unified into coordinate detection based on reference coordinate system and laser tracker.

[0107] (2) Improved the accuracy of shape and position detection of large heavy-duty grid cylindrical ground rails. Compared with the existing overall detection based on the superposition of multiple local detections, the method of the present invention is an absolute overall detection method, which reduces a lot of data transmission errors.

[0108] (3) It improves the efficiency of shape and position detection of large heavy-duty grid cylindrical ground rails. The shape and position detection device of the present invention has fewer installation and adjustment steps, is easy to operate and convenient, and the data is easy to save.

[0109] While the embodiments disclosed in this invention are as described above, they are merely illustrative of the embodiments to facilitate understanding of the invention and are not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A shape and position detection device for a grid-type cylindrical ground rail, characterized in that, The grid-type cylindrical ground rail embedded in the production line foundation (4) includes: M (M≥2) rows of parallel transverse cylindrical ground rails (1), N (N≥2) columns of parallel longitudinal cylindrical ground rails (2), M*N four-way connectors (3) for connecting the transverse cylindrical ground rails (1) and the longitudinal cylindrical ground rails (2), and a reference coordinate system R based on multiple coordinate system marker points (5). oxyz The reference coordinate system R oxyz The X and Y axes are parallel to the axis of the transverse cylindrical ground rail (1) and the axis of the longitudinal cylindrical ground rail (2), respectively; the four-way component (3) is provided with four centrally symmetrical inner circular grooves, and the adjacent inner circular grooves form a 90° angle; the shape and position detection device of the grid-type cylindrical ground rail includes: at least one axis detection component (7) and at least one plane detection component (8), as well as a level (9) and a measuring target (10); Each axis detection component (7) is configured as an isosceles triangular plate, which is placed on a transverse cylindrical ground rail (1) or a longitudinal cylindrical ground rail (2) by means of two directional inner circular grooves (12) coaxially set at both ends of the bottom edge of the plate. The longitudinal or transverse level of the axis detection component (7) is adjusted by means of a level (9) set on its upper plane and an adjusting bolt (16) screwed to the top corner. The straightness, parallelism and levelness of each transverse cylindrical ground rail (1) and each longitudinal cylindrical ground rail (2) are measured by means of a measuring target (10) set on the axis detection component (7). Each of the planar detection components (8) is configured as an octagonal plate, which is placed on the four-way component (3) by four positioning inner circular grooves (20) symmetrically arranged at the bottom center of its plate. The levelness of the four-way component (3) is measured by two levels (9) on its upper plane in the horizontal and vertical directions respectively, and the position of the four-way component (3) is measured by a measuring target (10) set on the planar detection component (8) in conjunction with a laser tracker (11).

2. The form and position detection device for the grid-type cylindrical ground rail according to claim 1, characterized in that, Each axis detection assembly (7) configured as an isosceles triangular plate is provided with: two directional inner circular grooves (12), a through inner circular groove (13), a first transition plane (14), a first transition circular hole (15), and an adjusting bolt (16); Two directional inner circular grooves (12) with the same diameter are provided on the lower surface of the axis detection component (7) and located at both ends of the base side of the isosceles triangular plate. A straight inner circular groove (13) is sandwiched between the two directional inner circular grooves (12), and the three inner circular grooves are coaxially arranged. The upper surface of the axis detection component (7) is the first transition plane (14), which is parallel to the axis (18) of the directional inner circular groove (12). The first transition circular hole (15) penetrates the axis detection component (7) vertically and is located in the middle of the straight inner circular groove (13). Its axis (19) intersects the axis (18) of the straight inner circular groove (13) perpendicularly and is perpendicular to the first transition plane (14). The adjusting bolt (16) is screwed into the threaded hole (17) located at the apex of the axis detection component (7) and penetrates the axis detection component (7) vertically. It is used to extend or shorten by screwing in the threaded hole (17). When the axis detection component (7) measures each transverse cylindrical ground rail (1) and each longitudinal cylindrical ground rail (2), it forms a rotating pair by attaching with a single transverse cylindrical ground rail (1) or a single longitudinal cylindrical ground rail (2) through two directional inner circular grooves 1.

3. The form and position detection device for the grid-type cylindrical ground rail according to claim 2, characterized in that, During use, the base of a level (9) used in conjunction with the axis detection assembly (7) is in contact with the first transition plane (14) of the axis detection assembly (7); the cylindrical tail rod of the measuring target (10) of the laser tracker is inserted into its first transition hole (15), and its optical reflection ball is located on the first transition plane (14); When the axis detection component (7) is in contact with the transverse cylindrical ground rail (1), the level (9) is placed longitudinally on the first transition plane (14) of the axis detection component (7) and the measurement is performed by adjusting the axis detection component (7) to a longitudinally horizontal state. When the axis detection component (7) is in contact with the longitudinal cylindrical ground rail (1), the level (9) is placed on the first transition plane (14) of the axis detection component (7) in a transverse direction, and the measurement is performed by adjusting the axis detection component (7) to a transverse horizontal state.

4. The form and position detection device for the grid-type cylindrical ground rail according to claim 2, characterized in that, Each plane detection component (8) configured as an octagonal plate is provided with: four positioning inner circular grooves (20), a second transition plane (21), and a second transition circular hole (22); Four positioning inner circular grooves (20) with the same diameter are arranged on the lower surface of the planar detection component (8) and are centrally symmetrically distributed. The axes of the four positioning inner circular grooves (20) are coplanar and the axes of two adjacent positioning inner circular grooves (20) are perpendicular. The upper surface of the planar detection component (8) is the second transition plane (21), which is parallel to the axes (23) of the four positioning inner circular grooves (20). The second transition circular hole (22) penetrates the planar detection component (8) vertically and is perpendicular to the second transition plane (21). The axis (24) of the second transition circular hole (22) intersects the axes (23) of the four positioning inner circular grooves (20) perpendicularly. The diameter of the first transition circular hole (15) of the axis detection component (7) is equal to the diameter of the second transition circular hole (21) of the planar detection component (8). During use, the planar detection component (8) fits into the four cylindrical ground rails fixed by the four positioning inner circular grooves (20) and the four-way component (3).

5. The form and position detection device for the grid-type cylindrical ground rail according to claim 4, characterized in that, During use, the bases of the two level instruments (9) used in conjunction with the plane detection component (8) are respectively in contact with the second transition plane (21) of the plane detection component (8) in the horizontal and vertical directions; the cylindrical tail rod of the measuring target (10) of the laser tracker is inserted into its second transition hole (22), so that the optical reflecting ball is located on the second transition plane (21).

6. A method for detecting and evaluating a grid-type cylindrical ground rail, characterized in that, The method for detecting and evaluating a grid-type cylindrical ground rail using the form and position detection device provided in any one of claims 1 to 5 specifically includes the following steps: Step 1, establish the reference coordinate system R. oxyz The coordinate system markers of all the aforementioned points were measured relative to the laser tracker coordinate system L using a laser tracker. oxyz The measured coordinates, and the coordinates of all the coordinate system markers relative to the reference coordinate system R. oxyz The calibration coordinates are matched using the least squares method to establish the aforementioned reference coordinate system R. oxyz ; Step 2, construct a standard CAD model for geometrical position detection: import and assemble the aforementioned reference coordinate system R in the CAD software in situ. oxyz The three-dimensional models of the horizontal cylindrical ground rail, the vertical cylindrical ground rail, and the four-way connector; Step 3: Detect and evaluate the levelness and position of the M*N four-way connectors relative to the reference coordinate system; Step 4: Inspect and evaluate the straightness, parallelism and levelness of the M-row transverse cylindrical ground rails (1); Step 5: Inspect and evaluate the straightness, parallelism, and levelness of the N longitudinal cylindrical ground rails (2); Step 6: Evaluate the verticality of the M-row transverse cylindrical track (1) and the N-column longitudinal cylindrical track (2).

7. The detection and evaluation method for a grid-type cylindrical ground rail according to claim 6, characterized in that, Step 3 includes: Step 3-1, Inspection preparation, including: fitting at least one planar inspection component with the two transverse cylindrical rails (1) and two longitudinal cylindrical rails (2) fixed by the four-way component (3) in the i-th (1≤i≤M) row and j-th (1≤i≤N) column of the cylindrical rail through four positioning inner circular grooves; Step 3-2, detecting the levelness of the four-way components in the i-th row and j-th column of the cylindrical ground rail, including: two levels (9) are set in the second transition plane (21) of each plane detection component (8) in the lateral and longitudinal directions respectively, to measure the lateral tilt angle of each plane detection component (8) and the corresponding four-way component (3). and longitudinal tilt angle Step 3-3, evaluate the levelness of the four-way piece set at the i-th row and j-th column positions on the cylindrical floor rail: When the lateral tilt angle and the longitudinal tilt angle are both within the allowable levelness range, it is judged that the levelness of the measured four-way piece is qualified; Steps 3-4 involve detecting the position of the four-way components in the i-th row and j-th column of the cylindrical ground rail, including: inserting a measuring target (10) into the second transition hole (22) of each planar detection component (8), and measuring the three-dimensional coordinates of the measuring target (10) relative to the reference coordinate system using a laser tracker. Step 3-5, evaluate the positional accuracy of the four-way connectors located at the i-th row and j-th column positions in the cylindrical ground rail: when the three-dimensional coordinates measured in step 3-4... If each coordinate value is within the positional tolerance range allowed by the standard CAD model, the positional tolerance of the measured four-way component is deemed acceptable.

8. The detection and evaluation method for a grid-type cylindrical ground rail according to claim 6, characterized in that, Step 4 includes: Step 4-1, detection preparation, including: setting P detection points on the i-th row of transverse cylindrical ground rail (1), fitting the axis detection component (7) with the k-th detection point on the i-th row of transverse cylindrical ground rail (1) through its two directional inner circular grooves (12) (1≤i≤P), and placing a level (9) on the first transition plane (14) of the axis detection component (7) along the longitudinal direction, and adjusting the feed amount of the adjusting bolt (16) in the axis detection component (7) to make the level (9) and the axis detection component in a longitudinal horizontal state; Step 4-2, detecting the coordinates of the i-th row of transverse cylindrical ground rails (1) at the k-th detection point, including: inserting a measuring target (10) into the first transition hole (15) of the axis detection component (7) at the k-th detection point on the i-th row of transverse cylindrical ground rails (1), and measuring the three-dimensional coordinates of the measuring target (10) relative to the reference coordinate system using a laser tracker (11). Step 4-3, evaluate the straightness of the i-th row of transverse cylindrical ground track (1), including: the three-dimensional coordinates of P detection points on the i-th row of transverse cylindrical ground track (1). If each coordinate value in the model is within the straightness range allowed by the standard CAD model, then the straightness of the i-th row of transverse cylindrical ground rail (1) is deemed to be qualified. Step 4-4: Evaluate the parallelism of the M rows of transverse cylindrical tracks (1), including: the three-dimensional coordinates of the M*P detection points in all transverse cylindrical tracks (1). If each coordinate value in the model is within the flatness range allowed by the standard CAD model, then the parallelism of the M-row transverse cylindrical ground rail (1) is deemed to be qualified. Steps 4-5: Evaluate the levelness of the M rows of transverse cylindrical tracks (1), including: the three-dimensional coordinates of the M*P detection points in all transverse cylindrical tracks (1). If each coordinate value in the model is within the level range allowed by the standard CAD model, then the level of the M-row transverse cylindrical ground rail (1) is deemed to be qualified.

9. The detection and evaluation method for a grid-type cylindrical ground rail according to claim 6, characterized in that, Step 5 includes: Step 5-1, detection preparation, including: setting Q detection points on the j-th column longitudinal cylindrical ground rail (2), fitting the axis detection component (7) with the l-th detection point on the j-th row longitudinal cylindrical ground rail (2) through its two directional inner circular grooves (12) 1≤l≤Q, and placing a level (9) on the first transition plane (14) of the axis detection component (7) in the transverse direction, and adjusting the feed amount of the adjusting bolt (16) in the axis detection component (7) by rotating it so that the level (9) and the axis detection component are in a transverse horizontal state; Step 5-2, detecting the coordinates of the j-th column longitudinal cylindrical ground rail (2) at the l-th detection point, including: inserting a measuring target (10) into the first transition hole (15) of the axis detection component (7) set at the l-th detection point on the j-th column longitudinal cylindrical ground rail (2), and measuring the three-dimensional coordinates of the measuring target (10) relative to the reference coordinate system by the laser tracker (11). Step 5-3, evaluate the straightness of the j-th column longitudinal cylindrical track (2), including: the three-dimensional coordinates of Q detection points on the j-th column longitudinal cylindrical track (2). If each coordinate value in the model is within the straightness range allowed by the standard CAD model, then the straightness of the j-th column longitudinal cylindrical ground rail (2) is deemed to be qualified. Step 5-4: Evaluate the parallelism of the N columns of longitudinal cylindrical tracks (2), including: the three-dimensional coordinates of the N*Q detection points in all longitudinal cylindrical tracks (2). If each coordinate value in the model is within the flatness range allowed by the standard CAD model, then the parallelism of the N-column longitudinal cylindrical ground rails (2) is deemed to be qualified. Step 5-5: Evaluate the levelness of the N columns of longitudinal cylindrical tracks (2), including: the three-dimensional coordinates of the N*Q detection points in all longitudinal cylindrical tracks (2). If each coordinate value in the model is within the levelness range allowed by the standard CAD model, then the levelness of the N-column longitudinal cylindrical ground rail (2) is deemed to be qualified.

10. The detection and evaluation method for a grid-type cylindrical ground rail according to claim 6, characterized in that, Step 6 includes: The three-dimensional coordinates of P detection points in each row of transverse cylindrical rails (1) of the cylindrical rails. and the three-dimensional coordinates of Q detection points in each longitudinal cylindrical ground rail (2) If each coordinate value in the model is within the verticality range allowed by the standard CAD model, then the verticality of the M-row horizontal cylindrical ground rail (1) and the N-column vertical cylindrical ground rail (2) is deemed to be qualified.

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