CN112591031A - Ship axis precision control method based on digital online detection technology - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
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Abstract
The invention provides a ship axis precision control method based on a digital online detection technology. And under a block modularization building mode, a process method of a digital online detection technology is adopted to realize axis reference full-size field digital detection in a complex environment at a slipway outfitting stage. By using a laser illumination method, a high-precision measuring instrument, a digital analysis detection and other scientific and technological information technology and process combination method, shafting fore and aft datum point precision, modular construction lower shafting illumination and datum transplanting precision and shafting boring datum precision in the ship construction process are controlled, and on-site digital comprehensive measurement and quality evaluation of the shafting datum precision are guided, so that the method is an effective means for monitoring and correcting the shafting datum. Influences on repeated standard point transplantation of the modular construction shafting reference point, continuous change of the axis reference caused by continuous change of the load in the ship block outfitting process and the like are reduced. The method is suitable for being used as a ship axis precision control method.
Description
Technical Field
The invention belongs to the technical field of high-precision detection and control of ship shafting, and relates to a precision control process method, in particular to a ship axis precision control method based on a digital online detection technology.
Background
The development of the modern shipbuilding industry requires shortening of shipbuilding period, and one of important measures is that a block section of a slipway outfitting stage is constructed in a modularized mode, so that the shipbuilding period is shortened as far as possible, and the construction pressure of a wharf is relieved to the maximum extent. At present, the commonly used steel wire bracing method and the optical lighting method can not meet the control requirements on the influence of the repeated transplantation of the datum point of the modular construction shaft system, the continuous change of the axis datum caused by the continuous change of the load in the outfitting process of the ship block and the accuracy of the ship shaft system. With the wide application of the digital comprehensive measurement technology in the shipbuilding field and the deep integration of the scientific and technological information technology and the technology, the digital comprehensive measurement technology is adopted to guide the on-site digital comprehensive measurement and quality evaluation of the axis datum precision, and the method is an effective mode of the axis datum full-size on-site digital detection under the complex environment of the outfitting stage of the shipway and is also an effective means of the axis datum monitoring and the axis datum correction.
Disclosure of Invention
The invention provides a ship axis precision control method based on a digital online detection technology, aiming at solving the problems of low working efficiency and insufficient automation level of the existing ship cable matching. The method solves the technical problem of ship axis datum measurement by determining datum precision in the process of shafting center line, including shafting fore-aft datum point precision, modular construction lower shafting alignment and datum transplanting precision, and shafting boring datum precision, and controlling shafting precision by applying a digital online detection technology and process method.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a ship axis precision control method based on a digital online detection technology is characterized in that under a block modular construction mode, a process method of the digital online detection technology is adopted, and axis reference full-size field digital detection under a complex environment at a ship berth outfitting stage is achieved.
(1) Controlling the precision of a bow and stern base point:
and establishing shafting fore-aft datum points by using the total station for conversion measurement. A three-dimensional coordinate system which is the same as the ship body is established through a total station, and the allowable size deviation between the shafting fore and aft base points and the ship body reference meets +/-1 mm.
(2) Modular construction of lower axis collimation and reference transplantation precision control:
the axis is determined, the base point is transplanted to the precision control tool, the displacement measurement precision can reach 1um/m, and the resolution can reach 0.1 um;
when the theoretical center line of the shaft system is determined by shaft system illumination, the centers of all the light targets are on the axis through which the optical projector passes, and the deviation is less than or equal to 0.05 mm;
the transplanting deviation of the shafting bow base point is less than or equal to 0.05 mm;
after the module is positioned and installed in the module cabin, the deviation between the module and the theoretical center of the shafting meets +/-1 mm.
(3) Shafting boring reference precision control:
monitoring shaft hub parameters in the shaft system boring process. The radius and the roundness of the inner hole of the bored shaft hub can be detected and output at a data processing display terminal-measuring workstation, and the correction of the boring bar in the boring process is realized. Each shaft hub hole diameter precision behind the shaft hub bore hole: the roundness is not more than 0.03mm, the cylindricity is not more than 0.05mm, the surface roughness Ra is not more than 3.2 mu m, and the coaxiality of the central line of the two-section shaft hub is not more than phi 0.20 mm.
In order to further solve the technical problem to be solved by the invention, in the ship axis precision control method based on the digital online detection technology, the information technology and the process are deeply fused, and the ship axis precision control process method is formed by the digital online detection technology:
(1) fore-aft base point accuracy control
The total station establishes a three-dimensional coordinate system which is the same as that of the ship body, detects fore-aft datum points when fore-aft datum points of a shafting are established, and uses an adjusting tool to ensure that the size deviation range of the fore-aft datum points and the aft-datum points is +/-1 mm.
(2) Modular construction lower axis collimation and reference transplantation precision control
Based on the laser centering measurement principle, a set of axis determination and base point transplantation precision control tool is used, and the tool mainly comprises a laser collimation measurement system (a long-distance collimation laser, a laser receiver and a tool calibration device), a laser displacement sensor, matched measurement workstation monitoring software and the like.
And (3) determining the theoretical center line of the axis by a light target (laser receiver) illumination method. And (3) realizing the central output coordinates (0, 0) of the light target, namely, the laser beam emitted by the stern end laser is superposed with the central line of the ship body, and determining the theoretical central line of the shafting. Light targets are respectively erected through a rear shaft hub of the stern shaft, a front shaft hub of the stern shaft and a specific fence, the centers of the light targets (laser receivers) are on the axis through which laser beams pass, and the deviation is less than or equal to 0.05 mm.
The light target (laser receiver) lighting method realizes the axial stem bow base point transplantation. And adjusting the position of the light target tube in the specific fence according to the condition of the axis light irradiation, so that the laser emitted by the laser passes through the center of the light target, and the center point of the light target is appointed to be used as a new bow base point of the subsequent axis light irradiation.
And (3) performing light irradiation on a light target (laser receiver) to secondarily determine the theoretical central line of the axis. A laser receiver is installed in the center of an output flange end of a main speed reducer of the module, and a laser emitter is arranged at a stern base point to emit laser to pass through the centers of a new bow base point and a stern base point light target. The installation position of the module is adjusted in the cabin, and the center of the PSD sensor of the receiver senses laser beams, so that the output axis of the module in the cabin is superposed with the theoretical center line of the shafting, and the deviation between the module and the theoretical center of the shafting is ensured to be +/-1 mm. And (3) secondarily determining the theoretical central line of the shafting by an illumination method, and erecting the deviation between the center of the light target and the laser beam to be less than or equal to 0.05 mm.
(3) Shafting boring reference precision control
Monitoring shaft hub parameters in the shaft system boring process. A high-precision laser displacement sensor is arranged behind a tool rest of the boring machine along the axis direction, and laser emitted by the laser displacement sensor is vertical to the axis of the boring rod and is provided with a wireless communication module. The laser displacement sensor rotates along with the boring rod, the radius and the roundness of the inner hole of the bored axle hub are calculated through distance data measured by the laser displacement sensor, the cylindricity of a bored hole is obtained by combining longitudinal feed of a boring machine, and the data are reflected in a data processing display terminal-measuring workstation. In the boring process, the correction of the boring bar in the boring process is realized through data output by the boring bar light target. Each shaft hub hole diameter precision behind the shaft hub bore hole: the roundness is not more than 0.03mm, the cylindricity is not more than 0.05mm, the surface roughness Ra is not more than 3.2 mu m, and the coaxiality of the central line of the two-section shaft hub is not more than phi 0.20 mm.
The invention has the advantages that a set of axis determination and base point transplantation precision control tool is adopted, advanced digital comprehensive measurement of reference precision control is realized, the shafting theoretical central line is determined by shafting light, accurate transplantation of the shafting bow base point and online accurate detection of shafting boring process parameters are carried out, the boring reference precision is controlled, and the shafting actual central line is determined. The method is suitable for being applied as a ship axis precision control method based on a digital online detection technology.
Drawings
FIG. 1 is a schematic diagram of a bow base point frame arrangement;
FIG. 2 is a schematic diagram of a structure of a base point frame;
FIG. 3 is a schematic diagram of a total station for determining a bow base point;
FIG. 4 is a schematic diagram of a total station for determining a stern datum point;
FIG. 5 is a schematic view of a shafting illumination.
In the figure, 1, a laser emitter, 2, a stern base point, 3, a rear hub, 4, a front hub, 5, a fence, 6, a bow base point, 7, a receiver, 8, a light target III, 9, a light target II, 10, a light target I, 11, a bow base point frame, 12, a modular raft frame base, 13, a partition wall, 14, an adjusting frame, 15, a support frame, 16, an adjusting screw, 17, a light target frame, 18, a light target, 19, a total station, 20, a stern base point frame and 21, a marker post.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the figure, a ship axis precision control method based on a digital online detection technology is characterized in that a shafting fore-and-aft datum point selection principle is determined according to the characteristics of block modular construction, a shafting fore-and-aft datum point is determined by using an optical high-precision measurement conversion method, and the deviation between the fore-and-aft datum point and a slipway datum point is controlled;
the method adopts a set of axis determination and base point transplantation precision control tool to realize advanced digital comprehensive measurement of reference precision control, determines the theoretical center line of the shafting through shafting light alignment, carries out accurate transplantation of the shafting bow base point 6 and online accurate detection of parameters of the shafting boring process, controls the boring reference precision, and determines the actual center line of the shafting.
The method comprises the following steps:
the method comprises the following steps of (I) controlling the precision of a bow-stern base point:
(1) after the outer balance weight of the block of the main section is adjusted, the posture is adjusted to ensure that the coincidence degree requirements of the end surface of the special fence of the bulkhead, the datum line of the stern end surface of the modular raft frame, the datum plane of the ship and the central line are used for positioning;
(2) a welding shaft system bow base point frame 11 and a stern base point frame 20 are arranged at the central position near the port of the stern main section of the ship and the external rib position of the stern end, and a module base frame base 12 is limited by a partition wall 13; the stern base point frame 20 is composed of a panel, a support frame 15, an adjusting frame 14, an adjusting screw 16, a light target frame 17 and a light target 18, and is arranged on the module base frame base 12 in a sitting mode; the adjusting frame 14 can be used for roughly adjusting the positions of the light target frame 17 and the light target 18, the adjusting screw 16 is used for finely adjusting the positions of the light target frame 17 and the light target 18, the adjusting precision is 0.02mm, and the fit clearance between the light target 18 and the light target frame 17 is about 0.01 mm-0.015 mm;
(3) a marker post 21 for fixing a target beside the stern block and marking the height reference of the slipway;
(4) taking the center line direction of the ship as the X direction, the transverse direction as the Y direction and the height direction as the Z direction; defining a total station measuring coordinate system, namely a Z-direction coordinate value Z1 of the target a and a Y-direction coordinate value Y1 of a center line of a shipway on the ground; adjusting a light pipe by adjusting an adjusting screw and an adjusting screw of an adjusting frame of a bow base point 6, detecting the coordinate of the center of the light target by a total station 19, enabling the coordinate of the center of the light target to be consistent with that of a target a in the Z direction and be consistent with that of the center line of a ground slipway in the Y direction, and determining a shafting bow base point 6 by the center of the light target, wherein the allowable size deviation range is +/-1 mm;
(5) after a shafting bow base point 6 is determined, measuring and recording coordinates of the shafting bow base point; erecting a total station 19 near the stern of a stern total section, defining a measurement coordinate system of the total station, measuring a coordinate z2 of a target a on a marker post, and measuring a Y-direction coordinate value Y2 of a center line of a slipway on the ground; the total station detects the coordinate of the center of the light target, adjusts the light pipe to make the coordinate of the center of the light target consistent with the coordinate of the target a in the Z direction and consistent with the coordinate of the center line of the ground slipway in the Y direction, and the center of the light target is the shafting stern base point 2 at the moment, and the allowable size deviation range is +/-1 mm;
secondly, modularly building lower axis collimation and reference transplantation precision control:
(1) the theoretical center line of the shafting is determined for the first time:
determining a theoretical center line of a shaft system by an illumination method; arranging a laser emitter 1 on a stern base point frame 20, adjusting the position and the angle of the laser, leading the laser emitted by the laser to sequentially pass through the bow base point 6 and the receiver 7 center of the stern base point frame 20, namely the center output coordinate of a light target is (0, 0), ensuring that the laser beam emitted by the stern end laser is superposed with the center line of a ship body, and determining the theoretical center line of a shafting;
light target pipe supports are respectively erected on a rear shaft hub 3 of a stern shaft, a front shaft hub 4 of the stern shaft and a special fence 5, two ends of each light target pipe are respectively provided with a light target II 9, a light target III 8 and a light target I10 which are sequentially numbered from stern to bow, the fit clearance between the light targets and the light target pipes is about 0.01 mm-0.015 mm, and light target pipe supporting tools are fixed in a shaft hub hole and in the special fence 5;
the postures of the light target tubes are adjusted one by one through screws on the light target tube bracket, so that the centers of the laser receivers 7 of the light targets are all on the axis through which the laser beams pass, and the deviation is less than or equal to 0.05 mm;
(2) transplanting a shafting bow base point 6:
when the theoretical center line of the shafting is determined for the first time, the bow base point 6 is located at the center of the port face of the stern main section, and subsequent cabin entering and exiting construction of a rear module of a cabin is influenced, so that the bow base point 6 needs to be transplanted to a part which does not influence the subsequent construction;
adjusting the position of a light target pipe in a specific fence of an engine room according to the condition of shafting illumination, enabling laser emitted by a laser to pass through the center of the light target, fixing the light target after the adjustment is finished, taking the center point of the light target numbered 6 as a new bow base point 6 for subsequent shafting illumination, and dismantling the original bow base point 6 after acceptance inspection is qualified;
(3) and (3) determining the theoretical center line of the shafting for the second time:
and (3) determining the theoretical center line of the ship shafting for the second time after the ship shafting enters the cabin from the rear module of the cabin:
a. the module is positioned and installed according to the axis:
installing a laser receiver 7 and a fixing tool thereof at the center of an output flange end of a main speed reducer on a module, starting a laser emitter 1 beside a stern base point 2, and enabling laser emitted by the laser emitter to sequentially pass through a new bow base point 6 and a stern base point 2 light target center in a specified bulkhead specific fence;
adjusting the installation position of the module in the cabin to enable the receiver PSD sensor center to sense the laser beam, namely the output axis of the module is superposed with the theoretical center line of the shafting, then the module is positioned and installed in the cabin, and the deviation between the detection module and the theoretical center of the shafting meets +/-1 mm;
b. shaft alignment:
determining the theoretical central line of the shafting for the second time by an illumination method; starting a laser transmitter on the stern base point frame 20, adjusting the position and the angle of a laser, and enabling the laser emitted by the laser to sequentially pass through the new bow base point 6, the center of the light target of the stern base point frame 20 and a laser receiver 7, namely the center output coordinate of the light target is (0, 0), so that the laser beam emitted by the stern end laser is ensured to be superposed with the center line of the ship body, and the light beam is the theoretical center line of a shafting;
the postures of a rear shaft hub 3 of the stern shaft, a front shaft hub 4 of the stern shaft and a light target tube in a specific fence 5 are sequentially adjusted, the centers of all light targets are detected to be on the axis through which the laser beam passes, and the deviation is less than or equal to 0.05 mm;
and (III) shaft system boring reference precision control:
(1) the boring bar is erected before the boring bar is erected, a boring bar frame plate supporting tool is temporarily welded on the structures at two ends of the front shaft hub of the stern shaft and the rear shaft hub of the stern shaft, and an internal thread is arranged at one end of the boring bar frame plate supporting tool, so that the frame plate can be conveniently fastened by bolts; the frame plate is provided with a kidney-shaped hole, so that the boring bar can be conveniently adjusted in a proper vertical or transverse direction;
a boring bar is outwards arranged at one end where the hydraulic driving mechanism is arranged; after a boring bar (with a tool rest) penetrates through a shaft hub, the boring bar is temporarily supported by a bracket, and an adjusting bolt is arranged on the bracket;
the laser device position at the stern base point 2 and the laser device position at the bearing base of the high-power elastic clutch air distributor are kept unchanged;
starting laser transmitters at the two ends of the bow and the stern, continuously adjusting the position of the boring bar in the shaft hub, monitoring the output of light targets at the two ends of the boring bar, indicating that the center line of the boring bar is superposed with the center line of the ship body when the output of the light targets at the two ends is (0, 0), and fixing the position of the boring bar at the moment; the method comprises the steps of sequentially installing a boring bar supporting bearing and a frame plate at two ends of a boring bar, fastening the frame plate on a boring bar supporting tool block, installing a hydraulic driving mechanism, beginning boring, measuring boring bar position information on a data display at any time by adjusting 4 jackscrews on the boring bar supporting bearing during boring, and accurately adjusting the position of the boring bar to ensure that the boring bar moves upwards by 0.90mm in parallel, the transverse distances are equal, and the tolerance is less than 0.01 mm.
(2) Monitoring shaft hub parameters in a shaft system boring process:
a high-precision laser displacement sensor and a fixing seat thereof are arranged behind a tool rest of the boring machine along the axis direction, and laser emitted by the laser displacement sensor is vertical to the axis of a boring rod and is provided with a wireless communication module;
the laser displacement sensor slowly rotates along with the boring rod, the radius and the roundness of the inner hole of the currently bored axle hub are calculated through distance data measured by the laser displacement sensor, the cylindricity of the currently bored axle hub can be obtained by combining longitudinal feed of a boring machine, and the data are reflected on a data processing display terminal-measuring workstation. When the construction is finished, outputting the roundness, cylindricity and verticality of the bored hole in a report form;
in the boring process, data output by the light targets at two ends of the boring rod reflect the axis of the boring rod at that time, and the boring rod can be corrected in the boring process.
The working principle of the invention is as follows:
the installation and positioning reference of the shafting equipment and the main machine module is a shafting central line, and the shafting central line comprises a shafting theoretical central line (a connecting line between shafting fore and aft datum points determined by shafting light) and an actual central line (a connecting line between shaft hub inner hole centers after shaft boring). The shafting reference precision control refers to the reference precision in the process of determining the shafting central line, and comprises shafting fore-aft reference point precision, shafting light and reference transplanting precision and shafting boring reference precision.
And under a block modularization building mode, a process method of a digital online detection technology is adopted to realize axis reference full-size field digital detection in a complex environment at a slipway outfitting stage. By using a laser illumination method, a high-precision measuring instrument, a digital analysis detection and other scientific and technological information technology and process combination method, shafting fore and aft datum point precision, modular construction lower shafting illumination and datum transplanting precision and shafting boring datum precision in the ship construction process are controlled, and on-site digital comprehensive measurement and quality evaluation of the shafting datum precision are guided, so that the method is an effective means for monitoring and correcting the shafting datum.
The method has the advantages of reducing the influence of the repeated transplantation of the datum point of the modular construction shafting, the continuous change of the axis datum caused by the continuous change of the load in the outfitting process of the ship block and the like, improving the accuracy of the ship shafting, facilitating the realization of the modular construction and shortening the construction period of the ship berth stage.
The invention has the characteristics that:
(1) high-precision measurement and high precision. The total station can establish a three-dimensional coordinate system which is the same as the ship body, and the allowable size deviation of the shafting fore base point 6, the stern base point 2 and the ship body reference meets +/-1 mm.
(2) Light-target illumination method. The working distance is large, the efficiency is high, the intuition is strong (the visible light beam shoots) during the measurement, and the influence of the factors is avoided.
(3) The light target illumination method is convenient to adjust and high in precision. When the theoretical central line of the shaft system is determined by shaft system illumination, the centers of all the light targets are on the axis through which the optical projector passes, and the deviation is less than or equal to 0.05 mm. The transplanting deviation of a shafting bow base point 6 is less than or equal to 0.05mm, and the deviation between a module and a shafting theoretical center meets +/-1 mm.
(4) And (5) carrying out digital online detection. And the shafting precision is represented by using the exact parameters, so that the detection efficiency and the detection precision are improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (2)
1. A ship axis precision control method based on a digital online detection technology is characterized by comprising the following steps: under a block modularization construction mode, a process method of a digital online detection technology is adopted to realize axis reference full-size field digital detection under a complex environment at a ship berth outfitting stage;
1) controlling the precision of a bow and stern base point:
a total station instrument is used for converting and measuring to establish shafting fore-aft datum points; establishing a three-dimensional coordinate system which is the same as the ship body through a total station, wherein the allowable size deviation of a shafting fore base point, a stern base point and the ship body reference meets +/-1 mm;
2) modular construction of lower axis collimation and reference transplantation precision control:
the axis is determined, the base point is transplanted to the precision control tool, the displacement measurement precision can reach 1um/m, and the resolution can reach 0.1 um;
when the theoretical center line of the shaft system is determined by shaft system illumination, the centers of all the light targets are on the axis through which the optical projector passes, and the deviation is less than or equal to 0.05 mm;
the transplanting deviation of the shafting bow base point is less than or equal to 0.05 mm;
after the module is positioned and installed in the module cabin, the deviation between the module and the theoretical center of the shafting meets +/-1 mm;
1) shafting boring reference precision control:
monitoring parameters of a shaft hub in a shaft system boring process; the radius and the roundness of the inner hole of the bored shaft hub can be detected and output at a data processing display terminal-measuring workstation, so that the correction of the boring bar in the boring process is realized; the diameter precision of each hub inner hole after the hub boring is not more than 0.03mm, the roundness is not more than 0.05mm, the surface roughness Ra is not more than 3.2 mu m, and the coaxiality of the center line of the two-section hub is not more than phi 0.20 mm.
2. The ship axis precision control method based on the digital online detection technology as claimed in claim 1, wherein: the information technology and the process are deeply fused, and the ship axis precision control process method is formed by the digital online detection technology:
controlling the precision of a bow and stern base point:
the total station establishes a three-dimensional coordinate system which is the same as the ship body, detects fore-aft datum points when a shafting fore-aft datum point is established, and uses an adjusting tool to ensure that the size deviation range of the fore-aft datum point and the aft-datum point is +/-1 mm;
(2) modular construction of lower axis collimation and reference transplantation precision control:
based on a laser centering measurement principle, a set of axis determination and base point transplantation precision control tool is used, and the tool mainly comprises a laser collimation measurement system (a long-distance collimation laser, a laser receiver and a tool calibration device), a laser displacement sensor, matched measurement workstation monitoring software and the like;
determining a theoretical center line of a shaft system by a light target (laser receiver) illumination method; realizing the central output coordinates (0, 0) of the light target, namely, the laser beam emitted by the stern end laser is superposed with the central line of the ship body, and determining the theoretical central line of the shafting; light targets are respectively erected through a rear shaft hub of the stern shaft, a front shaft hub of the stern shaft and a specific fence, the centers of the light targets (laser receivers) are on the axis through which laser beams pass, and the deviation is less than or equal to 0.05 mm;
a light target (laser receiver) illumination method is adopted to realize shafting bow base point transplantation; adjusting the position of a light target tube in a specific fence according to the condition of axis light irradiation, enabling laser emitted by a laser to pass through the center of the light target, and designating the center point of the light target as a new bow base point of subsequent axis light irradiation;
determining the theoretical central line of the axis for the second time by a light target (laser receiver) illumination method; a laser receiver is arranged in the center of an output flange end of a main speed reducer of the module, and a laser emitter is arranged at a stern base point to emit laser to pass through the centers of a new bow base point and a stern base point light target; adjusting the installation position of the module in the cabin, and sensing a laser beam by the center of a PSD (phase-sensitive detector) sensor of a receiver to ensure that the output axis of the module in the cabin is superposed with the theoretical center line of the shafting, so as to ensure that the deviation between the module and the theoretical center of the shafting is +/-1 mm; determining the theoretical central line of the shafting by the irradiation method for the second time, and setting the deviation between the center of the light target and the laser beam to be less than or equal to 0.05 mm;
(3) shafting boring reference precision control:
monitoring parameters of a shaft hub in a shaft system boring process; a high-precision laser displacement sensor is arranged behind a tool rest of the boring machine along the axis direction, laser emitted by the laser displacement sensor is vertical to the axis of a boring rod, a wireless communication module is arranged, the laser displacement sensor rotates along with the boring rod, the radius and the roundness of an inner hole of a boring shaft hub are calculated through distance data measured by the laser displacement sensor, the cylindricity of a boring hole is obtained by combining longitudinal feed of the boring machine, and the data is reflected in a data processing display terminal-a measuring work station; in the boring process, the correction of the boring bar in the boring process is realized through data output by the boring bar light target; each shaft hub hole diameter precision behind the shaft hub bore hole: the roundness is not more than 0.03mm, the cylindricity is not more than 0.05mm, the surface roughness Ra is not more than 3.2 mu m, and the coaxiality of the central line of the two-section shaft hub is not more than phi 0.20 mm.
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| CN113210663A (en) * | 2021-05-20 | 2021-08-06 | 中石化石油工程技术服务有限公司 | Boring device, boring method and stern shaft mounting method |
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| CN114701618A (en) * | 2022-03-10 | 2022-07-05 | 江南造船(集团)有限责任公司 | Ship precision control method based on block construction |
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