Turning tool and machining method of outer nozzle ring

Abstract

The invention discloses a turning tool and a machining method of an outer nozzle ring which is reliable in clamping, and belongs to the technical field of pressurizers. The turning tool comprises a base, wherein a lug boss is formed in the base, and is embedded into an inner hole in the big end of the outer nozzle ring so as to radially position the outer nozzle ring; a plurality of detachable outer pressing plates are further arranged on the base; the plurality of the outer pressing plates are annularly arranged on the outer periphery of the lug boss, and are pressed against a step at the big end of the outer nozzle ring so as to axially position the outer nozzle ring; a detachable inner pressing plate is arranged on the lug boss, and is pressed against the end surface of the small end of the outer nozzle ring so as to axially position the outer nozzle ring.

Description

technical field [0001] The invention belongs to the technical field of superchargers, and relates to a turning tool and a processing method for the outer ring of a nozzle. Background technique [0002] The outer ring of the nozzle is an important component of the nozzle ring and an important workpiece of the supercharger. It works together with the nozzle ring and the inner ring of the nozzle to complete the inlet distribution of the turbine gas (exhaust gas) and control the flow of the airflow. The direction and flow rate directly control and affect the speed of the rotor assembly, and affect the power and performance of the supercharger. Therefore, the quality assurance of the nozzle ring is very important, especially the processing and quality assurance of the outer ring of the nozzle. , The processing quality of the nozzle outer ring has not found a good method and reliable guarantee. [0003] The structure of the outer ring of the nozzle is as follows figure 1 and f...

AI Technical Summary

Problems solved by technology

[0005] 1. When the inner hole, end face and outer circle of the 60 semi-finishing small end are used in the circular groove of the car, the clamping section is too short to clamp the workpiece if the outer circle is selected, and the wall thickness of the clamping section is too small during the turning process of the annular groove. With the continuous thinning of the processing, coupled with the force impact on the workpiece during turning, it is easy to cause the workpiece to be thrown out and cause a safety accident; if the inner hole of the support is selected to turn the annular groove, although the clamping section increases, the process will continue to increase. The wall thickness of the supporting part is constantly thinning, which will also cause the accident of the workpiece being thrown out, and the clamping jaws are forced to be processed with the maximum force, which will cause the workpiece to be clamped and deformed, and the size and size required by the process cannot be met. Accuracy requirements;

[0006] 2. When the inner hole and end face of the large end of the 30 rough turning, the actual casting is not fully considered, because the wall of the small end of the blank is thin, the flow channel of the metal liquid during the casting process is narrow and small, and it is not easy to fill, resulting in pores and pinches at the small end. Undeterminable defects such as sand, less meat, etc., which make the casting blank actually have a gap with the theoretical requirements, so the workpiece is scrapped due to small end defects and no more machining allowance, resulting in greater economic losses

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