Device for measuring included angle between rudderstock central axis and rudder tail central axis of rudder part

Abstract

The utility model relates to an assembly precision detection technology of rudder parts, in particular to a device for measuring an included angle between a rudderstock central axis and a rudder tail central axis of the rudder parts. The technical problems that at present, after a rudderstock and a rudder plate are installed, no standard detection tool is available for detecting the position degrees of the rudderstock and the rudder plate, and when a three-coordinate measuring instrument is used for detecting the position degrees of the rudderstock and the rudder plate, the speed is low and the efficiency is low are solved. The utility model discloses a device for measuring an included angle between a rudderstock central axis and a rudder tail central axis of a rudder part. The device comprises a horizontal base and a vertical angle indicating end connected to the front part of the base, a rudderstock mounting position is arranged at the tail of the base; the height of the angle indicating end is consistent with the length of the rudder shaft; the top of the angle indicating end is horizontal, and angle measuring lines are engraved on the angle indicating end; and the measurement angle lines are distributed by taking the rudderstock mounting position as the center. According to the utility model, the requirement of quickly detecting the symmetry degree and the included angle deviation range of the rudder stock central axis and the rudder plate central axis of rudder parts can be met, the assembly and manufacture are quick, and the cost is low.

Description

Technical Field

[0001] The utility model relates to an assembly accuracy detection technology for rudder parts, in particular to a device for measuring the angle between a rudder stock center axis and a rudder tail center line of a rudder part. Background Art

[0002] Rudder components primarily steer and control the direction of an aircraft or ship. Typically located at the tail of an aircraft, they achieve heading changes by maneuvering the rudder blade. The machining and assembly accuracy of rudder components directly impacts the accuracy of the aircraft's navigation and control. Therefore, high precision is required in the positioning of the rudder blade and rudder stock during both machining and subsequent assembly.

[0003] Rudder components are molded using a metal rudder stock and non-metallic (fiber composite) materials. The metal rudder stock is secured within the rudder shaft mold using a positioning surface. Fiber prepreg is applied according to the relevant process methods and molded under high temperature and high pressure. Therefore, the precise alignment of the rudder stock's centerline and the rudder blade's centerline relies solely on mold precision and skilled manual operation.

[0004] Specifically, a product rudder parts (such as Figure 1-2 The rudder stock (as shown) consists of a rudder plate and a rudder plate. The rudder stock is made of metal, while the rudder plate is made of non-metallic materials such as composite materials. During the rudder plate molding process, the rudder stock is integrated into the rudder plate as an inlay. The positioning accuracy of the rudder stock and rudder plate is easily affected by the mold's positioning accuracy and assembly precision, which affects the performance of the rudder plate components. Currently, due to the lack of standardized testing tools for position accuracy, the position of the rudder stock and rudder plate is checked using a three-dimensional coordinate measuring machine (CMM). This is slow and inefficient, seriously affecting the overall assembly process.

[0005] Figure 1 In the invention, the rudder stock is composed of a cylindrical rudder shaft and a rudder stock positioning section located below the rudder shaft. The cross section of the rudder stock positioning section is generally a square structure, which is also called the rudder stock positioning surface. Utility Model Content

[0006] The utility model aims to solve the technical problems that there is a lack of standard detection tools to detect the position of the rudder stock and the rudder plate after they are installed, and the use of a three-coordinate measuring instrument for detecting the position of the rudder stock and the rudder plate has slow speed and low efficiency. A device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail of a rudder part is provided.

[0007] The utility model is realized by adopting the following technical scheme: a device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail of a rudder-type part, comprising a horizontal base and a vertical angle indicating end connected to the front of the base; a rudder stock mounting position is provided at the tail of the base; the height of the angle indicating end is consistent with the length of the rudder shaft; the top of the angle indicating end is horizontal and has measuring angle lines engraved thereon; the measuring angle lines are distributed with the rudder stock mounting position as the center.

[0008] When measuring the angle between the center axis of the rudder stock and the center line of the rudder tail of the assembled rudder parts, first place the measuring device on the horizontal test table, install and position the rudder stock positioning section of the rudder stock of the rudder parts to be measured on the rudder stock installation position, and then place the bottom of the rudder plate on the angle indicating end; observe the positional relationship between the center line of the bottom of the rudder plate and the measuring angle line and read the angle reading of the measuring angle line.

[0009] Furthermore, the tail of the base adopts an open structure, and the opening is arranged along the center line of the base, which includes a long narrow slot, a positioning hole as a rudder rod mounting position, and a short narrow slot from front to back; threaded through holes are provided on both sides of the short narrow slot and are equipped with locking screws; the positioning hole adopts a small clearance fit that is consistent with the rudder rod positioning surface structure and has the same tolerance.

[0010] Furthermore, the positioning hole is a square hole.

[0011] Furthermore, the measuring angle lines are distributed with the square hole as the center, which means that radial measuring lines are drawn horizontally with the center of the square hole as the center of the circle, and the projection of the radial measuring lines on the top plane of the angle indicating end constitutes the measuring angle line.

[0012] The utility model can meet the requirements of quickly detecting the symmetry and angle deviation range of the rudder stock center axis and the rudder plate center axis of rudder parts, is very convenient to use, has a simple structure, and is quick to assemble and manufacture at low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure after rudder parts are assembled.

[0014] Figure 2 for Figure 1 Top view of .

[0015] Figure 3 A schematic diagram of the main structure of the utility model during detection.

[0016] Figure 4 A schematic top view of the structure of the present invention.

[0017] 1-base, 2-angle indicator, 3-measuring angle line, 4-positioning hole, 5-locking screw, 6-measured part, 7-rudder plate, 8-rudder stock. DETAILED DESCRIPTION

[0018] The present invention relates to a measuring device for detecting the angle between the central axes of two parts after two parts that cooperate with each other are assembled or integrally formed.

[0019] Example 1 A device for measuring the angle between the center axis of a rudder stock and the center line of a rudder tail, comprising a horizontal base 1 and a vertical angle indicating end 2 connected to the front of the base 1; a rudder stock mounting position is provided at the tail of the base 1; the height L1 of the angle indicating end 2 is consistent with the length of the rudder axis; the top of the angle indicating end 2 is horizontal, and a measuring angle line 3 is engraved thereon; the measuring angle line 3 is distributed with the rudder stock mounting position as the center; the tail of the base 1 adopts an open structure, and the opening is arranged along the center line of the base, and from front to back, they are a long narrow slot, a positioning hole 4 as a rudder stock mounting position, and a short narrow slot; threaded through holes are provided on both sides of the short narrow slot and are equipped with locking screws 5; the positioning hole 4 adopts a small clearance fit that is consistent with the structure of the rudder stock positioning surface and has the same tolerance.

[0020] Example 2 The positioning hole 4 is a square hole; the measuring angle line 3 is distributed with the square hole as the center, which means that radial measuring lines are drawn horizontally with the center of the square hole as the center of the circle, and the projection of the radial measuring lines on the top plane of the angle indicating end 2 constitutes the measuring angle line 3.

[0021] The structure and use method of the present invention are further described below with reference to the accompanying drawings.

[0022] A device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail of a rudder part mainly includes a detection body and a locking screw. (1) The detection body is designed to be 90°L-shaped (such as Figure 3 As shown in the figure), the design height L1 of the angle indicating end is consistent with the length of the rudder shaft. On the end face of the angle indicating end, with the positioning hole at the base end (taking the square hole as an example) as the center, a measuring angle line is engraved ( Figure 4 shown).

[0023] (2) In order to facilitate the assembly and matching of the measuring device and the rudder parts to be tested, the tail of the base adopts an open design and is locked with screws to ensure the matching accuracy of the rudder stock assembled to the positioning hole of the base to measure the centerline angle of the rudder.

[0024] (3) The bottom surface of the base end must be ensured to be level with the test platform. A positioning hole is machined on the center line of the base. The positioning hole and the rudder stock positioning surface structure are consistent and have a small gap fit with the same tolerance.

[0025] The method of using the utility model is as follows:

[0026] (1) The base of the designed device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail is placed horizontally on a horizontal test bench.

[0027] (2) Install the square axis of the rudder shaft of the rudder part to be measured on the square hole of the measuring device.

[0028] (3) Use the locking screw to lock the rudder shaft of the rudder parts to ensure a tight fit.

[0029] (4) Check the rudder shaft parts, the fit between the rudder plate surface and the angle indicator end.

[0030] (5) Find the angle reading between the centerline of the rudder plate and the angle measuring line on the measuring device.

Claims

1. A device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail, characterized in that: The invention comprises a horizontal base (1) and a vertical angle indicating end (2) connected to the front of the base (1); a rudder stock mounting position is provided at the rear of the base (1); the height of the angle indicating end (2) is consistent with the length of the rudder shaft; the top of the angle indicating end (2) is horizontal and has a measuring angle line (3) engraved thereon; the measuring angle line (3) is distributed with the rudder stock mounting position as the center.

2. A device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail as claimed in claim 1, characterized in that: The tail of the base (1) adopts an open structure, and the opening is arranged along the center line of the base, and from front to back, it comprises a long narrow slot, a positioning hole (4) as a rudder stock mounting position, and a short narrow slot; threaded through holes are provided on both sides of the short narrow slot and are equipped with locking screws (5); the positioning hole (4) adopts a small clearance fit with the same structure and tolerance as the rudder stock positioning surface.

3. A device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail as claimed in claim 2, characterized in that: The positioning hole (4) is a square hole.

4. A device for measuring the angle between the center axis of the rudder stock and the center line of the rudder tail as claimed in claim 3, characterized in that: The measuring angle lines (3) are distributed with the square hole as the center, which means that radial measuring lines are horizontally drawn with the center of the square hole as the center of the circle, and the projection of the radial measuring lines on the top plane of the angle indicating end (2) constitutes the measuring angle lines (3).

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