Precision casting blade tenon tooth machining front reference conversion clamp and using method thereof

Abstract

The invention provides a precision casting blade tenon tooth machining front reference conversion clamp and a using method thereof, and belongs to the technical field of machining of high-low-pressureturbine blades. The precision casting blade tenon tooth machining front reference conversion clamp comprises a support plate, support legs, a first hinge support, a second hinge support, a first lateral baffle, a second lateral baffle, a turnover cavity and a discharging mechanism, wherein the supporting legs are arranged below the supporting plate, the center of the support plate is provided with a square protrusion, and the first hinge support and the second hinge support are installed on the support plate. The turnover cavity comprises a turnover cover, wherein the discharging mechanism comprises a cam shaft, lifting pins and a handle, wherein the cam shaft is arranged on the supporting legs and is positioned below the supporting plate, the lifting pins are arranged in the square protrusion of the supporting plate and are in contact with the cam shaft, springs are arranged at the part, below the supporting plate, of the lifting pins in a sleeved mode, and the handle is arranged onthe cam shaft and can drive the cam shaft to rotate. The clamp is simple in operation process, the tenon teeth can be positioned stably and reliably during machining, the damage to the precision casting blades is avoided, the machining quality is guaranteed, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of processing high and low pressure turbine blades in aviation turbine parts, in particular to a reference conversion jig before tenon tooth processing of precision cast blades and a using method thereof. Background technique [0002] The high and low pressure turbine blades in the aviation turbine parts are precision cast blades. The tenon tooth processing of precision cast blades has always been a difficult point in processing. Tenon tooth processing is the first processing process of the blade, and its quality directly affects the processing quality of the subsequent process. , the raw material reference of precision casting blades is six-point positioning. At present, fixtures are often used to clamp precision casting blades when machining mortise teeth, and six positioning points are directly used to position precision casting blades, and then the tenon teeth are directly ground During the grinding proc...

AI Technical Summary

Problems solved by technology

[0002] The high and low pressure turbine blades in the aviation turbine parts are precision cast blades. The tenon tooth processing of precision cast blades has always been a difficult point in processing. Tenon tooth processing is the first processing process of the blade, and its quality directly affects the processing quality of the subsequent process. , the raw material reference of precision casting blades is six-point positioning. At present, fixtures are often used to clamp precision casting blades when machining mortise teeth, and six positioning points are directly used to position precision casting blades, and then the tenon teeth are directly ground During the grinding process, it was found that due to the irregular shape of the precision-cast blade, even if the precision-cast blade is positioned, there will still be a large vibration when grinding the mortise teeth, making the process unstable, and the blade will be in the process of processing the tenon. The teeth move during the process of toothing, which leads to a high scrap rate of blade tenon teeth processing, wasting resources, and in the process of clamping, if the clamping force is too large, the blade will be deformed, if the clamping force is too small, during the grinding process The generated vibration will be greater, therefore, the operator needs a lot of time in the process of clamping, and it is necessary to ensure the clamping force without causing deformation of the precision-cast blade, which is time-consuming and labor-intensive

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