CN207197466U - Helicopter Main oar hoop lower plate detecting tool - Google Patents

Abstract

The utility model belongs to Helicopter Main oar hoop detection technique, and in particular to a kind of Helicopter Main oar hoop lower plate detecting tool.The Helicopter Main oar hoop lower plate detecting tool is structure as a whole, its front-end and back-end is provided with boss, middle part is a bar hole, and spring leaf clamping column is respectively arranged between bar hole both ends and front end boss and rear end boss, and bar hole on both sides of the middle is provided with two Auxiliary support posts.Pass through the actual use to detecting tool, the function and technical indicator of detecting tool comply fully with design requirement, compared with past clamping method, realize accurate positioning, clamping it is quick, it is easy to use, meet the features such as clamped one time completes all detection needs, detection efficiency is more importantly improved, meets that part volume detects needs.

Description

Helicopter main rotor hoop splint inspection tooling

technical field

The utility model belongs to the detection technology of a helicopter main propeller hoop, in particular to a detection tool for a splint under the helicopter main propeller hoop.

Background technique

As shown in Figure 1, the lower splint is a key part of the helicopter main propeller hoop, and is a complex and irregular part. In the actual processing, manufacturing and assembly, the lower splint needs to be inspected. There is no special detection tool during detection in the prior art, resulting in poor detection stability. After a period of detection, it was found that the original detection method had the following problems:

1) Due to the irregular shape of the unforged part, it is difficult to clamp. If each piece is inspected manually, it is difficult to ensure the consistency of each inspection method, and the inspection time is long. It is difficult, and it takes a long time to process the detection data, which is very cumbersome.

2) The test results found that the test data was unstable. Through retesting, we found that the two test results were quite different. After careful investigation, it was found that the reason for the difference was that the clamping deformation caused the deformation of the upper splint and caused errors. In the past, the clamping method used two 25mm measuring blocks with equal heights to be fixed with plasticine. Therefore, the original clamping method could not guarantee the testing requirements and testing stability of batch parts.

Utility model content

The purpose of the utility model is to provide a tool for detecting the splint under the main propeller hoop of a helicopter, which can realize fast clamping and precise positioning of parts.

The technical scheme of the utility model is: a detection tool for the splint under the main propeller hoop of a helicopter, which has an integral structure, and its front and rear ends are provided with bosses, the middle part is a strip hole, and the two ends of the strip hole are connected with the front boss and Spring clamping columns are respectively arranged between the bosses at the rear end, and two auxiliary supporting columns are arranged on both sides of the middle part of the strip hole.

The height of the boss at the front end is lower than the height of the boss at the rear end.

The height difference between the front end boss and the rear end boss is 25mm.

The technical effect of the utility model is: through the actual use of the detection tool, the function and technical indicators of the detection tool fully meet the design requirements. It has the characteristics of completing all the inspection needs in one clamping, and more importantly, it improves the inspection efficiency and meets the inspection needs of batch parts. It takes 2 hours to inspect one piece from the original to 0.5 hours.

Description of drawings

Fig. 1 is the schematic diagram of lower splint;

Fig. 2 is a structural schematic diagram of the splint detection tool under the main propeller hoop of the utility model helicopter;

Fig. 3 is a schematic diagram of the installation and clamping of the splint detection tool under the main propeller hoop of the utility model helicopter;

Fig. 4 is a side view of the utility model helicopter main propeller hoop splint detection tool clamping side view;

Among them, 1-spring clamping column, 2-front end boss, 3-rear end boss, 4-two auxiliary support columns.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail:

Please refer to Figure 2. The detection tooling for the splint under the main propeller hoop of the helicopter is an integrated structure. There are bosses at the front and rear ends, and a strip hole in the middle. The two ends of the strip hole are between the front boss and the rear boss. A spring sheet clamping column is arranged respectively, and two auxiliary support columns are arranged on both sides of the middle part of the strip hole.

The height of the boss at the front end is lower than that of the boss at the rear end, and the height difference between the two is 25mm.

In the support and clamping method, support and compression are adopted, and the support surface is increased to widen the support surface to 120×60 (mm). The contact area is increased to make the support more stable, which can effectively reduce shaking and improve measurement accuracy. , and the pressure plate adopts the form of spring compression, which is more convenient for compression and disassembly. When designing the testing tool to meet the needs of batch testing of upper splint parts, the method adopted is that the testing tool uses two holes for positioning, and uses the lower end faces of the two holes as a reference. Since the difference between the two planes is 25mm, it is processed on the testing tool These two height differences are made to ensure that the lower splint is kept in a parallel state during detection, which can greatly reduce the number of replacement styli and achieve the purpose of optimizing the stylus. Two auxiliary supports are designed in the middle of the tooling to prevent the parts from collapsing. Deformation, the slotting of the bottom plate not only reduces the weight but also facilitates fixing the tooling on the three-coordinate measuring machine.

The utility model realizes accurate positioning, convenient clamping, meets all testing needs in one clamping, shortens the installation and adjustment time, and meets the testing needs of batch parts. detection efficiency.

Claims (3)

1. a kind of Helicopter Main oar hoop lower plate detecting tool, it is characterised in that be structure as a whole, its front-end and back-end is respectively provided with There is boss, middle part is a bar hole, and spring leaf clamping is respectively arranged between bar hole both ends and front end boss and rear end boss Column, bar hole on both sides of the middle are provided with two Auxiliary support posts.

2. Helicopter Main oar hoop lower plate detecting tool according to claim 1, it is characterised in that front end boss height is low In rear end boss height.

3. Helicopter Main oar hoop lower plate detecting tool according to claim 2, it is characterised in that front end boss and rear end Difference in height between boss is 25mm.