Inspection device and method for quickly eliminating size error and quickly clamping large lubricating oil tank

Abstract

The invention discloses an inspection device and method for quickly eliminating size errors and quickly clamping a large lubricating oil tank, and the inspection device uses four positioning pin shafts to cooperate with four fixed clamping supports to convert a positioning surface to the outer side of a semi-enclosed structure, and uses the four positioning clamping supports to quickly align an installation position, and then a detection sample plate assembly and a sample plate are pushed to realize contour dimension detection in two directions of linear translation and rotation. The problems that a large lubricating oil tank product is heavy in weight and large in size are solved, positioning is simple and reliable, the influence caused by position tolerance (errors) of mounting holes in the large lubricating oil tank is effectively eliminated, and operation is easy and convenient.

Description

technical field [0001] The invention relates to an inspection device and method for quickly clamping and clamping a large-scale lubricating oil tank product to check the contour size, which belongs to the technical field of aviation airborne equipment inspection process equipment, especially a structure for quickly eliminating the installation size error of a large-scale lubricating oil tank and quickly clamping, And linear reciprocating inspection and rotating surface inspection structure and method. Background technique [0002] The large lubricating oil tank is an important accessory of the aircraft lubricating oil system. figure 1 and figure 2 The dotted line in the figure is the outline of the large lubricating oil tank. The large lubricating oil tank is a casting of complex shape. Due to the narrow installation space, it is necessary to ensure a reasonable gap between the adjacent accessories before installation, so the outer outline must be inspected. At the same ti...

AI Technical Summary

Problems solved by technology

[0004] First, since the large lubricating oil tank is processed, there are errors in the positions of the four mounting holes on the surface, so it is impossible to ensure that the large lubricating oil tank, the fixing seat, and the screw-in fixing pin are assembled at one time. Fine-tune the position between the three;

[0005] Second, the mounting and fixing surface between the screw-in fixing pin and the fixing seat and the installation hole of the large lubricating oil tank is located inside the semi-enclosed structure, and cannot be directly observed from the outside, so we can only rely on the feeling to keep trying, so the actual assembly method is First insert the upper end of the fixing base into the semi-enclosed structure, and then repeatedly try to screw the screw-in fixing pin into the mounting hole until the screw-in fixing pin passes through the mounting hole and the fixing base at the same time. At this time, the assembly between the three is completed. Finally, adjust the connection position of the lower end of the fixed seat (equivalent to completing the fixing of the upper end of the fixed seat first, and then fine-tuning the position of the lower end of the fixed seat), but this method has two disadvantages, first of all, low efficiency, four mounting holes 1. The four fixed seats and four screw-in fixed pins need to be adjusted independently in groups, which is very time-consuming. It often happens that after three or two groups are assembled, the connection position of the lower end of the remaining group or two groups of fixed seats cannot continue to be adjusted. (beyond the scope of the error design), resulting in the need to rework and readjust; secondly, there are potential safety hazards, because the large lubricating oil tank needs to be kept in the air during the assembly and adjustment process, so that the connection position of the lower end of the fixing seat can be fine-tuned. In view of the weight of the large lubricating oil tank and volume, the operation is very dangerous

[0006] Based on the above problems, the inspection device and method that simulate the real assembly structure will seriously affect the inspection process. For example, it is impossible (or difficult to implement) to fine-tune the size of the front and rear fixing seats that fix the four mounting holes on the inspection device. Comply with the dimensional errors of the four mounting holes on the test piece, which is not only inefficient, but also difficult to meet the actual production needs if the installation time is too long. A device is needed that can quickly eliminate the assembly impact caused by dimensional errors and shorten production auxiliary time

In addition, the inspection device must complete the inspection of the length, width, height and a circular arc surface of the large lubricating oil tank at the same time. How to arrange to ensure rapid inspection, reduce labor intensity of operators, and ensure accurate inspection is a big problem

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