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Tool device for measuring thickness of casting and method thereof
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A technology for tooling and thickness measurement, which is applied to measuring devices, instruments, and the use of wave/particle radiation, etc., can solve problems such as inaccurate measurement of hollow blades, and achieve the effects of improved application range, clear pictures, and high use intensity
Active Publication Date: 2020-10-09
AECC AVIATION POWER CO LTD
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Problems solved by technology
[0004] In order to solve the problems existing in the prior art, the present invention provides a tooling device for measuring the thickness of castings, which solves the problem of inaccurate measurement of the R position of the hollow blade in the prior art
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Embodiment 1
[0047] Example 1: Detection of the wall thickness of the inlet R of a high-pressure turbine blade of a certain machine
[0048] The blade body size of the hollow blade to be tested is less than 50mm, so only the tooling device for measuring the thickness of the casting is used. The selected size of the tooling device is:
[0053] The wall thickness of the mortise root placement board, the edge board placement board, the mortise root backing board and the strengthening tooling board is 3mm, C1=50mm, K1=31mm.
[0054] Make a thickness measuring tooling device according to the above dimensions, place the hollow blade on the tooling device, put the placed hollow blade and the tooling device...
Embodiment 2
[0055] Example 2: Detection of the wall thickness of the inlet R of the working blade of a high-pressure turbine of a certain machine
[0056] The blade body size of the hollow blade to be tested is about 126mm, and the casting thickness measuring tooling device and auxiliary tooling parts are used for detection. The dimensions of the tooling device and auxiliary tooling parts are as follows:
[0061] The wall thickness of the mortise root placement plate, edge plate placement plate, mortise root support plate and reinforced tooling plate is 3mm, C1=86mm, K1=56mm;
[0063] Make the tooling device and auxiliary tooling parts ac...
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Abstract
The invention discloses a tool device for measuring thickness of casting and a method thereof. The tool device comprises a tenon root placing plate and an edge plate placing plate, a tenon root V-shaped opening is formed in one side of the tenon root placing plate, and the opening degree of the tenon root V-shaped opening is equal to the included angle degree between the tenon root air inlet sideend face and the blade back side tenon root end face; the side edge, perpendicular to the edge provided with the tenon root V-shaped opening and close to the end face of the air inlet side of the tenon root, of the tenon root containing plate is a first reference edge. The included angle between the first reference edge and the V-shaped opening of the tenon root is beta1; the opening degree of theV-shaped opening of the tenon root is alpha 1; the beta1 and the alpha1 are complementary; the structure of the margin plate placing plate is the same as that of the tenon root placing plate; the included angle between the second reference edge and the V-shaped opening of the margin plate is beta2; the opening degree of the V-shaped opening of the margin plate is alpha 2, and the beta 2 and the alpha 2 are complementary. After the hollow blade is placed, the plane where the R part of the air inlet side of the hollow blade is located is perpendicular to the detection ray, the detection ray candetect the vertical distance of the R part, and the measured wall thickness of the R part is more accurate.
Description
technical field [0001] The invention belongs to the field of measuring devices for hollow blades, in particular to a tooling device for measuring the thickness of castings and a method thereof. Background technique [0002] Wall thickness is one of the key characteristics of hollow blades of aero-engines and gas turbines. If the wall thickness is too thin, it will affect the strength, and if the wall thickness is too thick, it will cause overweight. Accurate measurement of wall thickness has become a key point in the quality control of hollow blades. [0003] At present, the wall thickness of hollow blades is detected by ultrasonic thickness measurement or CT. The radius of curvature of the inlet R of the hollow blade is large, and the ultrasonic thickness measurement method is adopted. Since the probe of the ultrasonic thickness gauge is a plane, the contact with the inlet R of the inlet side is a point contact, and the wall thickness of the inlet R cannot be measured with ...
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