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Method for measuring and aligning during large shell horizontal assembly

A shell, large-scale technology, used in measuring/indicating equipment, metal processing machinery parts, metal processing equipment, etc., can solve problems such as low efficiency and poor accuracy

Active Publication Date: 2019-05-17
XIAN AEROSPACEMOTOR MACHINE FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the prior art of manual metering, trial and error assembly, low efficiency, and poor precision, the present invention proposes a measurement and alignment method for horizontal assembly of large shells

Method used

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  • Method for measuring and aligning during large shell horizontal assembly
  • Method for measuring and aligning during large shell horizontal assembly
  • Method for measuring and aligning during large shell horizontal assembly

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Embodiment Construction

[0093] This embodiment is a measurement and alignment method for horizontal assembly of large housings. The large shell has a diameter of 1.8 m, a length of 6 m and a wall thickness of 5 mm. The front clamping surface of the large housing is close to one end of the machine tool head 18, and the front clamping surface is the outer circumferential surface at 50 mm from the front end of the housing; the rear clamping surface of the large housing is close to the machine tool tail box One end, and the rear clamping surface is the inner circumferential surface at a distance of 50 mm from the rear end surface of the housing. The measurement benchmarks are the reference circular line 2 at the front end of the shell and the reference circular line 5 at the rear end. Such as Figure 5 As shown, the front end reference circular line 2 is located on the outer circumferential surface of the housing, and the distance S1 between the front reference circular line and the front end surface o...

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Abstract

The invention discloses a method for measuring and aligning during large shell horizontal assembly. A circumferential scanning method that a laser sensor is fixed, and a spindle drives a shell to rotate is adopted for measuring, the laser sensor is moved to benchmark positions on the two ends of the shell fixed to a machine tool for measuring position calibration, the radial distance of the shellbenchmark positions is subjected to scanning measuring, the shell coaxiality state information can be automatically resolved, and a bolt pretightening adjusting amount is given out for allowing the shell to be aligned and adjusted. Sensing measuring, data processing, shell position state determining and graphical human-computer interaction functions are integrated, and are integrated on a controlsystem framework of a numerical control machine tool numerical control system, operation is convenient, and embedding is high. The measuring process is precise and controllable, the measuring result calculation is precise, the method is used for measuring and aligning during horizontal assembling of the shell with the diameter larger than two meters and the length being six to seven meters, the needed hour is shortened to be within one hour now from original three hours, and the coaxiality error is reduced to 0.05 mm now from original 0.5 mm.

Description

technical field [0001] The invention belongs to the technical field of mechanical assembly measurement and relates to a measurement and alignment method for horizontal clamping of a housing with a diameter greater than 2 meters and a length of 6 to 7 meters. Background technique [0002] With the rapid development of aerospace technology, as the main structural components of rockets, satellites, aircraft and other aircraft, the processing quality requirements of large shell parts are constantly improving, and the output demand is also increasing. The key process technology upgrade is imminent. Taking the shell workpiece of a certain type of rocket as an example, during the finishing process of the shell and the docking process between the shells, the two ends of the shell need to be assembled on the main shaft of the machine tool, the outer card tooling or the chuck, and the coaxiality of the axis of the shell installation Higher quality requirements are put forward. Theref...

Claims

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Application Information

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IPC IPC(8): B23Q17/00B23Q17/22B23Q17/24
Inventor 华小渝王永青李俊峰王卫玲马延枫张锦锋赵润辉闫飞宇李特吕建卫周宏军李长洪王斌
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY
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