Turning method for inner hole deep grooves

[0032] Example one:

[0033] This embodiment provides a method for turning a gas seal. The specific structure of the gas seal is as follows: Figure 4 As shown, there is an inner hole penetrating through the middle part, and a plurality of deep grooves are continuously arranged in the inner hole, and there are grooves with a slope. The machining process includes a rough turning process and a finishing turning process. The process, which is set between the rough turning process and the finishing turning process, can further reduce the amount of finishing machining, thereby reducing the force of the cutting force on the part itself, effectively reducing the amount of deformation and improving the machining accuracy. Specifically, in the half In the finishing and finishing processes, a step-by-step method is adopted, that is, the inclined wall surface of the deep groove is processed first, and the straight wall surface of the deep groove is processed later, such as Figure 8 As shown,

[0038] Embodiment two:

[0039] This embodiment provides a method for turning a variant air seal, and its specific structure is as follows Figure 7 As shown, the difference from the first embodiment is that the multiple deep grooves are all straight grooves, and the difference in processing is that this embodiment adopts a sequential processing method, and the margin of the semi-finished turning is set to 0.05mm-0.15mm.

[0040] The invention divides the whole deep groove processing in detail through the program, unifies the turning method, forms a deep groove turning processing system method, minimizes the extrusion deformation between the tool and the inner wall during turning, and ensures the deep groove The accuracy of the inner wall of the groove solves the problem that the accuracy of the deep groove of the variable material is not up to the standard. It avoids the unreasonable tool selection and turning methods in the past in the process of product accuracy that is not up to s