Adjustable bolt aperture verticality measuring instrument

Abstract

The utility model belongs to the field of aviation technology aircraft assembly, and relates to an adjustable bolt aperture verticality measuring instrument, which comprises an angle ruler, a probe chuck, a vertical ruler and a probe, a scale part is arranged at one end of the bottom of the angle ruler, scale lines are arranged on the scale part, one side of the top of the angle ruler is rotatably connected with the probe chuck, and the rotary chuck is connected with the probe. The vertical ruler is L-shaped and comprises a vertical connecting part and a horizontal attaching part, the vertical connecting part is connected with the bevel protractor, the bottom surface of the bevel protractor is attached to the upper surface of the horizontal attaching part, and the lower surface of the horizontal attaching part is attached to the surface of a part to be measured. The utility model provides the adjustable bolt hole diameter perpendicularity measuring instrument which is relatively high in precision, relatively low in manufacturing cost and relatively simple to operate, and comprehensive popularization of a bolt hole perpendicularity measuring tool is facilitated.

Description

Technical Field

[0001] The invention belongs to the field of aviation technology and aircraft assembly, and relates to an adjustable bolt hole diameter verticality measuring instrument. Background Art

[0002] In the process of modern aircraft assembly, threaded connection is often involved, because this connection method has relatively high strength and simple structure, easy installation and easy disassembly, which provides great convenience for later aircraft modification and maintenance. Therefore, this connection method is widely used. However, its disadvantages are also significant. In addition to the strength of the bolt itself, the strength of the bolt is also affected by the verticality of the bolt hole. If the verticality of the bolt hole exceeds the limit requirements of the typical process operation regulations, it will cause bolt stress concentration, resulting in the risk of bolt breakage. Therefore, it is particularly important to monitor the verticality of the bolt hole during the assembly of the aircraft structure. The traditional verticality measuring instrument is costly and complicated to operate, which is not conducive to its comprehensive promotion. Utility Model Content

[0003] Technical problem solved by the utility model: The utility model is used to overcome the problems of complex measuring tools and high cost of measuring instruments in the existing bolt hole verticality measurement technology, and provides an adjustable bolt hole diameter verticality measuring instrument with relatively high accuracy, relatively low cost and relatively simple operation, which is convenient for the comprehensive promotion of bolt hole verticality measuring tools.

[0004] The technical solution of this utility model:

[0005] An adjustable bolt hole diameter verticality measuring instrument comprises an angle ruler 1, a probe clamp 2, a vertical ruler 3, and a probe 4. A scale portion is arranged at one end of the bottom of the angle ruler 1, and scale lines are arranged on the scale portion. One side of the top of the angle ruler 1 is rotatably connected to the probe clamp 2, and the rotating clamp 2 is connected to the probe 4. An observation hole is arranged on the probe 4, and the scale lines on the scale portion can be observed through the observation hole. The vertical ruler 3 is L-shaped, and comprises a vertical connecting portion and a horizontal fitting portion. The vertical connecting portion is connected to the angle ruler 1, and the bottom surface of the angle ruler 1 is fitted with the upper surface of the horizontal fitting portion, and the lower surface of the horizontal fitting portion is fitted with the surface of a part to be measured.

[0006] Furthermore, the probe card head 2 and the probe 4 are connected via threads.

[0007] Furthermore, the angle ruler 1 is provided with positioning holes arranged along the height direction.

[0008] Furthermore, a positioning pin is also provided on the vertical connection portion of the vertical ruler 3 , and the positioning pin is matched and connected with positioning holes at different positions on the angle ruler 1 to achieve the adjustment of the height of the angle ruler 1 .

[0009] Furthermore, the range of the scale lines is 0 to 0.5°.

[0010] Furthermore, one side of the top of the angle ruler 1 is rotatably connected to the probe card head 2 via a rotating shaft.

[0011] Beneficial effects of the utility model:

[0012] The utility model of the present invention overcomes the problems of complicated measuring tools and high cost of measuring instruments in the existing bolt hole verticality measurement technology, and provides a new adjustable bolt hole diameter verticality measuring instrument with relatively high accuracy, relatively low cost and relatively simple operation. The mass production can popularize the usage rate, making the bolt hole verticality measurement more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model adjustable bolt hole diameter verticality measuring instrument;

[0014] Among them, 1. Angle ruler, 2. Probe holder, 3. Vertical ruler, 4. Probe. DETAILED DESCRIPTION

[0015] In order to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1 As shown, the utility model proposes an adjustable bolt hole diameter verticality measuring instrument, including an angle ruler 1, a probe clamp 2, a vertical ruler 3, and a probe 4. A scale portion is arranged at one end of the bottom of the angle ruler 1, and scale lines are arranged on the scale portion. One side of the top of the angle ruler 1 is rotatably connected to the probe clamp 2, and the rotating clamp 2 is connected to the probe 4. An observation hole is arranged on the probe 4, and the scale lines on the scale portion can be observed through the observation hole. The vertical ruler 3 is L-shaped, including a vertical connecting portion and a horizontal fitting portion. The vertical connecting portion is connected to the angle ruler 1, and the bottom surface of the angle ruler 1 is fitted with the upper surface of the horizontal fitting portion, and the lower surface of the horizontal fitting portion is fitted with the surface of the part to be measured.

[0017] In the present invention, the probe card head 2 and the probe 4 are connected by threads, which is convenient for installation and disassembly.

[0018] In the present invention, the angle ruler 1 is provided with positioning holes arranged in the height direction, and the vertical connection part of the vertical ruler 3 is also provided with positioning pins, which are matched and connected with the positioning holes at different positions on the angle ruler 1 to adjust the height of the angle ruler 1. According to the height of the bolt hole of the part to be measured, the height of the angle ruler 1 on the vertical ruler 3 can be adjusted accordingly to measure the verticality of bolt holes at different heights.

[0019] In the present invention, the range of the scale lines is 0 to 0.5°.

[0020] After the bolt mounting hole is reamed, according to the requirements of a certain technical document, the verticality of the bolt hole and the part must be controlled at 90°±0.5°; this design uses a vertical ruler 3 to fit the surface of the part, and the probe 4 is inserted into the bolt hole to be measured. The angle of the probe 4 deviating from the angle ruler 1 is observed through the observation hole at the front end of the probe 4. At the zero scale position, the verticality of the bolt hole is the best, and the zero scale mark can be observed through the observation hole at the front end of the probe 4. As the verticality of the bolt hole deteriorates, the probe will gradually deviate from the zero scale line. When the small hole at the front end of the probe observes the maximum range of the scale line, it is considered that the verticality of the bolt hole exceeds the requirements of a certain technical document for the preparation of the bolt hole.

[0021] In order to solve the problem of measuring the verticality of holes of bolts with different diameters, the utility model is designed to add a probe card head 2. The probe card head 2 and the probe 4 rotate around the angle ruler 1 together, and the probe card head 2 and the probe 4 are connected by threads. When measuring the verticality of bolt holes with different diameters, the probe 4 can be replaced according to the bolt diameter, thereby achieving the purpose of matching the probe 4 with the bolt hole diameter.

[0022] When working, firstly fit the lower surface of the horizontal fitting part of the vertical ruler 3 with the surface of the part to be measured, then extend the probe 4 into the bolt hole to be measured, and finally observe the angle of the probe deviating from the angle ruler 1 through the observation hole at the front end of the probe 4. The problem of complex measuring tools and high cost of measuring instruments in the existing bolt hole verticality measurement technology is overcome, and a new bolt hole verticality measuring instrument with relatively high accuracy, relatively low cost and relatively simple operation is provided, which saves time and production costs and improves production efficiency.

Claims

1. An adjustable bolt hole diameter verticality measuring instrument, characterized in that: It includes an angle ruler, a probe card head, a vertical ruler, and a probe. A scale part is arranged at one end of the bottom of the angle ruler, and scale lines are arranged on the scale part. One side of the top of the angle ruler is rotatably connected with the probe card head, and the probe card head is connected to the probe. An observation hole is arranged on the probe, and the scale lines on the scale part can be observed through the observation hole. The vertical ruler is L-shaped, including a vertical connecting part and a horizontal fitting part. The vertical connecting part is connected to the angle ruler, and the bottom surface of the angle ruler is fitted with the upper surface of the horizontal fitting part, and the lower surface of the horizontal fitting part is fitted with the surface of the part to be measured.

2. The adjustable bolt hole diameter verticality measuring instrument according to claim 1, characterized in that: The probe card head is connected to the probe through threads.

3. The adjustable bolt hole diameter verticality measuring instrument according to claim 1, characterized in that: The angle ruler is provided with positioning holes arranged along the height direction.

4. The adjustable bolt hole diameter verticality measuring instrument according to claim 3 is characterized in that: A positioning pin is also provided on the vertical connection part of the vertical ruler, and the positioning pin is matched and connected with positioning holes at different positions on the angle ruler to achieve the adjustment of the height of the angle ruler.

5. The adjustable bolt hole diameter verticality measuring instrument according to claim 1, characterized in that: The range of the scale lines is 0 to 0.5°.

6. The adjustable bolt hole diameter verticality measuring instrument according to claim 1, characterized in that: One side of the top of the angle ruler is rotatably connected to the probe card head via a rotating shaft.

Images