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A processing method for a medium-sized beam of a helicopter

A processing method and helicopter technology, applied in the field of mechanical processing, can solve problems such as poor contact, poor thickness of medium beams, and poor product quality, and achieve the effect of improving product quality and solving firmness.

Inactive Publication Date: 2016-12-07
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: due to the complex structure of the lower surface 3 of the medium-sized beam, the contact between the vacuum fixture and the lower surface 3 is not good, and the adsorption is not firm, resulting in the thickness of the upper and lower surfaces of the medium-sized beam being too poor, and the product quality is poor

Method used

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  • A processing method for a medium-sized beam of a helicopter
  • A processing method for a medium-sized beam of a helicopter
  • A processing method for a medium-sized beam of a helicopter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Cutting: use a band saw to cut the cuboid wool 4, the length of the wool 4 is L=500+80=580mm, 500 is the maximum length of the medium-sized beam, the width of the wool 4 is W=300+80=380mm, and 300 is the length of the medium-sized beam The maximum width, the thickness of wool 4 H=60+10=70mm, 60 is the highest height of the medium-sized beam; see image 3 .

[0033] 2. Machining positioning holes: place the wool material 4 horizontally on the workbench of the CNC machine tool, process two positioning holes 4a on the wool material 4, the center of the positioning hole 4a is on the center line of the wide side of the wool material 4, and the center of the positioning hole 4a reaches the The distance of woolen 4 wide sides is 0.25x(580-500)=20mm; Refer to image 3 .

[0034] 3. Machining the lower surface 3: place the upper surface of the wool 4 downward on the workbench of the CNC machine tool, align it through the positioning hole 4a, press the four corners of the wo...

Embodiment 2

[0041] 1. Cutting: use a band saw to cut the cuboid wool 4, the length of the wool 4 is L=600+90=690mm, 600 is the maximum length of the medium-sized beam, the width of the wool 4 is W=300+80=380mm, and 300 is the length of the medium-sized beam The maximum width, the thickness of wool 4 H = 100 + 15 = 115mm, 100 is the highest height of the medium-sized beam; see image 3 .

[0042] 2. Machining positioning holes: place the wool material 4 horizontally on the workbench of the CNC machine tool, process two positioning holes 4a on the wool material 4, the center of the positioning hole 4a is on the center line of the wide side of the wool material 4, and the center of the positioning hole 4a reaches the The distance of woolen 4 wide sides is 0.25x(690-600)=22.5mm; Refer to image 3 .

[0043]3. Machining the lower surface 3: place the upper surface of the wool 4 downward on the workbench of the CNC machine tool, align it through the positioning hole 4a, press the four corners...

Embodiment 3

[0050] 1. Cutting: use a band saw to cut the cuboid wool 4, the length of the wool 4 is L=1000+100=1100mm, 1000 is the maximum length of the medium-sized beam, the width of the wool 4 is W=400+80=480mm, and 400 is the length of the medium-sized beam The maximum width, the thickness of wool 4 H = 120 + 15 = 135mm, 120 is the highest height of the medium-sized beam; see image 3 .

[0051] 2. Machining positioning holes: place the wool material 4 horizontally on the workbench of the CNC machine tool, process two positioning holes 4a on the wool material 4, the center of the positioning hole 4a is on the center line of the wide side of the wool material 4, and the center of the positioning hole 4a reaches the The distance of woolen 4 wide sides is 0.25x(1100-1000)=25mm; Refer to image 3 .

[0052] 3. Machining the lower surface 3: place the upper surface of the wool 4 downward on the workbench of the CNC machine tool, align it through the positioning hole 4a, press the four co...

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Abstract

The invention belongs to the machining technology and relates to an improvement in a helicopter middle-sized beam machining method. The method is characterized in that a numerically-controlled machine tool is adopted for machining according to the following steps of blanking, machining of locating holes, machining of a lower surface (3), machining of a skirt (5), rough machining of an upper surface (1) and side faces (2) of a middle-sized beam, aging, finish machining of the upper surface (1) and the side faces (2) of the middle-sized beam and cutting of redundant stock. By means of the improved helicopter middle-sized beam machining method, the stock clamping firmness is enhanced, it is guaranteed that the thickness of the upper surface and the thickness of the lower surface of the middle-sized beam meet the requirements of a drawing, and the product quality is improved.

Description

technical field [0001] The invention belongs to the mechanical processing technology, and relates to the improvement of the processing method of the medium beam of the helicopter. Background technique [0002] The medium-sized beam is a load-bearing beam at the tail of the helicopter. For the structure of the medium-sized beam of a certain type of helicopter, see figure 1 , 2 . The upper surface 1 of the medium-sized beam is a complex profile with many vertical ribs and through holes, the lower surface 3 of the medium-sized beam is a complex profile with an arc surface, and the side 2 of the medium-sized beam is composed of a plane and an arc surface complex profile. The medium beam is made of aluminum. The current processing method is: first process the lower surface 3 on the wool, then turn over the wool, use a vacuum fixture to absorb the lower surface 3, and process the upper surface 1 and the side 2. Its disadvantages are: due to the complex structure of the lower ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 丁文君
Owner HARBIN
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