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Throat size detection device and detection method for multi-connected blade casting

A dimensional detection and throat technology, which is applied to measuring devices, mechanical measuring devices, and mechanical devices, etc., can solve the problems of loss of measurement accuracy, lack of versatility, and impact on detection accuracy, so as to eliminate measurement errors and facilitate measurement. Operation, the effect of improving detection accuracy

Pending Publication Date: 2022-05-13
安徽应流航源动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing throat detection devices generally need to be tested by customizing special "go and stop gauges". For blades of the same specification and different sizes, multiple sets of "go and stop gauges" need to be customized, which is not universal; at the same time , in the mass production of castings, with the wear of the inspection tool, the original measurement accuracy of the dimension is easy to be lost, resulting in measurement errors and affecting the quality, and the throat size of the blade is generally located between two blades, and it is difficult to measure directly. Large, and prone to large errors, affecting the detection accuracy

Method used

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  • Throat size detection device and detection method for multi-connected blade casting
  • Throat size detection device and detection method for multi-connected blade casting
  • Throat size detection device and detection method for multi-connected blade casting

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Experimental program
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Embodiment 1

[0024] Such as Figure 1-3 As shown, a throat size detection device for multi-blade castings includes an outer casing 1, the two sides of the outer casing 1 are fixedly connected to hollow tubes 2, and the inner edges of the two hollow tubes 2 can be adjusted to connect with each other. The board top 3 and the outer edge board top 4, the other two sides of the outer casing 1 are respectively provided with two rotationally symmetrical throat sliders 5, and the throat slider 5 is slidably connected with the outer casing 1;

[0025] Also includes a long rod 6, the long rod 6 passes through the outer shell 1 and is movably connected with the outer shell 1, the long rod 6 is provided with a short rod 7, and the outer shell 1 is fixed with a The nut 8 connected by limit rotation, the diameter of the long rod 6 is larger than the diameter of the short rod 7, and the short rod 7 is located on the outer side of the outer shell 1 and is connected to the two throat sliders 5 to drive the...

Embodiment 2

[0030] A method for detecting the throat size of a multi-vane casting, comprising the following steps:

[0031] Step 1. Fix the multi-blade casting on the workbench, and use the two throat sliders in the throat size detection device to measure the throat distance as L;

[0032] Step 2: Measure the length of the throat distance L in the throat size detection device in step 1 with a vernier caliper to obtain the value of the throat size.

[0033] The specific detection method is to fix the multi-blade casting on the workbench, slide the inner edge plate top 3 and the outer edge plate top 4 in the hollow tube 2, so that the two ejector rods are respectively located at the end of the multi-blade channel with the casting. The two side walls are clamped to realize the fixing of the entire throat size detection device, and then the long rod 6 is rotated, and the short rod 7 on the long rod 6 rotates horizontally with the upper and lower limit of the bolt, and drives the gear 71 to ro...

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Abstract

The invention discloses a throat size detection device for multi-connected blade castings, which comprises an outer shell, two side surfaces of the outer shell are fixedly connected with hollow pipes, the hollow pipes are adjustably connected with an inner edge plate top and an outer edge plate top respectively, the other two sides of the outer shell are respectively provided with two rotationally symmetrical throat slide blocks, a long rod is provided with a short rod, and the long rod is provided with a rotating shaft. The short rod is rotationally connected with the outer shell, and the outer side of the short rod is in transmission connection with the two throat sliding blocks to drive the two throat sliding blocks to move in the opposite direction or the back direction at the same time. The invention further discloses a detection method which comprises the following steps: measuring the throat distance L by adopting the throat size detection device; measuring the length of the throat distance L through a vernier caliper; according to the invention, the throat sizes of multi-connected blades with different sizes can be detected, the applicability is greatly improved, the adjustable characteristic enables the measurement size to be controlled, the measurement error caused by the wear of the detection tool is completely eradicated, and the product quality of multi-connected blade castings is ensured; measurement operation is facilitated, measurement errors are reduced, and the detection precision is improved.

Description

technical field [0001] The invention relates to the technical field of investment precision casting, in particular to a throat size detection device and detection method for multi-blade castings. Background technique [0002] Multi-blade parts such as gas turbines and aero-engines are generally cast by investment casting. The size of multi-blade parts requires high precision, and the throat size is one of them. The throat size of the engine blade is an important parameter for engine assembly and debugging. The control of the throat size is the key to the blade assembly. The blade channel is composed of multiple The size of the space surface channel formed between the upper and lower edge plates of each blade and the airfoil profile of each two blades is related to the thrust of the engine and is an important factor affecting the performance of the engine. Existing throat detection devices generally need to be tested by customizing special "go and stop gauges". For blades of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/00G01B5/02
CPCG01B5/003G01B5/02
Inventor 罗钢杜应流程善良李林周永芳程建
Owner 安徽应流航源动力科技有限公司