Machining and positioning device for mounting holes in middle and rear sections of large thin-wall auxiliary oil tank

Abstract

The invention discloses a machining and positioning device for mounting holes in middle and rear sections of a large thin-wall auxiliary oil tank. The machining and positioning device for the mountingholes in the middle and rear sections of the large thin-wall auxiliary oil tank comprises a base (7), a middle-section positioning device (8), a clamping mechanism I (9), a clamping mechanism II (12)and a rear-section positioning device (14), wherein the middle-section positioning device is fixedly arranged at the front end of the base (7); the rear-section positioning device (14) is arranged atthe rear end of the base (7); positioning rings of the middle-section positioning device (8) and the rear-section positioning device (14) are coaxial; the clamping mechanism I (9) comprises an adjusting base (31), an arc-shaped supporting block (25) and a steel belt (23); the clamping mechanism II (12) is similar to the clamping mechanism I (9); and after arc-shaped supporting blocks (25) of theclamping mechanism I (9) and the clamping mechanism II (12) make surface contact with a cylinder outer wall, and then a steel belt (23) is pulled tightly and fixed, so that the accuracy in simulationpositioning and the reliability in clamping are realized, the assembly efficiency and the assembly precision are improved, and the product quality is ensured.

Description

technical field [0001] The invention relates to a processing and positioning tool for the installation hole of an auxiliary fuel tank, in particular to a processing and positioning device for the middle and rear mounting holes of a large thin-walled auxiliary fuel tank. Background technique [0002] In modern warfare, the use of auxiliary fuel tanks can greatly increase the endurance time of fighters, effectively increase the combat radius, and add chips to the victory of the war. The processing and manufacturing quality of the auxiliary fuel tank is an important link to ensure the performance of the aircraft. With the continuous improvement of the performance of the fighter, the reliability requirements for the auxiliary fuel tank are also constantly improving. The auxiliary fuel tank is a large, thin-walled, airtight variable-section box, such as Figure 11 , Figure 12 As shown, a large thin-walled auxiliary fuel tank generally includes a front cylinder 1, a middle cylin...

AI Technical Summary

Problems solved by technology

Now mainly through repairing the bolt holes of the main lifting lug 4 and the tail hook 6, it is ensured that the main lifting lug 4 and the tail hook 6 can be respectively installed in the main lifting lug mounting hole 15 and the tail hook mounting hole 16, and that the main lifting lug 4 And the tail hook 6 can compensate the offset of the two mounting holes relative to the central axis; by repairing the bolt holes of the main lifting lug 4 and the tail hook 6, not only the assembly efficiency is low, but also the two mounting holes cannot be accurately measured without a reference The offset relative to the central axis increases the difficulty of repair. After the main lifting lug 4 and the tail hook 6 are connected to the aircraft, the front end of the auxiliary fuel tank also seriously deviates from the central axis.

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