A processing and detection device and method for engine oil supply support plate casing

Abstract

The invention discloses a machining and detection device and method of an engine oil supply support plate case. A plurality of support plate blades in the oil supply support plate case are arranged nonuniformly in the circumferential direction. At least one supporting plate blade is internally provided with a lubricating oil pipe. An outer case body is provided with an angular original point reference standard as a reference marker for machining and engine component assembling. An inner case body and the outer case body of the oil supply support plate case and the support plate blades between the inner case body and the outer case body are machined in a monoblock casting method. A support plate case blank is finally formed through machining. The support plate case prepared through the machining method conducts detection through a detection device and a standard measuring bar. By means of the device and method, the redesigned engine oil supply support plate case can be effectively guaranteed; it is guaranteed that parts of the manufactured oil supply support plate case meet the design requirements; meanwhile, the casting difficulty is reduced, the qualified rate of products is increased, and the cost is lowered.

Description

technical field [0001] The invention relates to the field of ground gas turbines, especially the high-temperature components of aero-engine turbines, and more specifically relates to a processing and testing device and method for the fuel supply support plate casing of the engine, so as to ensure that the fuel supply support plate machine manufactured by processing The casing parts meet the design requirements, ensuring the position of the support plate and the accuracy of the airfoil, as well as the assembly accuracy between the casing and the target parts, while reducing the difficulty of casting, improving the product qualification rate, and reducing costs. Background technique [0002] In ground gas turbines and aero engines, in order to provide lubricating oil to the high pressure and low pressure rear bearings of the engine, a lubricating oil system needs to be arranged. To this end, a strut plate is formed in the transition between the high-pressure turbine and the lo...

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Problems solved by technology

However, this design brings the following problems: (1) the straight-leaf strut cannot adapt to the upstream airflow angle, resulting in a large aerodynamic loss; (2) the straight-blade strut cannot provide a suitable airflow angle for the downstream turbine stage, It is unfavorable to the aerodynamic performance of the downstream turbine, and increases the difficulty of additional low-pressure turbine design; (3) The straight-blade strut plate produces a very large disturbance to the flow field, which brings a large aerodynamic excitation force, which is easy to cause the downstream low-pressure turbine Low-cycle fatigue threatens the operation of the engine; (4) In order to ensure sufficient strength in the transition section, multiple support plates are generally designed, and evenly distributed support plates are likely to cause engine resonance problems, which is not conducive to the safe operation of the engine

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