A Methodology for Generating a Variable-Pitch Rotor of Twin-Screw Vacuum Pump

Tran, Van The

doi:10.4028/www.scientific.net/amm.889.475

Cited by 6 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results indicated that a high accuracy was obtained in the machining process in cases with different rotor benchmarks with the specially designed tool. Tran [22] proposed a processing methodology for producing a screw rotor with a complex profile that had changes in the tooth pitch by CNC turning. Investigation results from simulations revealed that the proposed process method is effective in flexibly realising the manufacturing of the screw rotor by varying the production of the tooth profile.…”

Section: Traditional Cutting Processmentioning

confidence: 99%

Research Progress on the Manufacturing of Screw-Shaped Parts in Screw Compressors

Wang,

Xiong,

Feng

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Screw compressors are highly researched and developed prospects in industry because of their long service life, high transmission efficiency, low footprint and low vibration. As the key core part of the screw compressor, the screw is a typical, long-shaft, complex profile part. Its processing method, manufacturing accuracy and quality have an extremely important impact on the performance of the whole screw compressor. In this work, the research progress on the manufacturing of screw-shaped parts in screw compressors is summarised from the aspects of the cutting process, solid plastic forming, casting and additive manufacturing. The merits and demerits of these manufacturing processes are provided and discussed, which is conducive to the development of the high-efficiency, precise and high-performance forming process of screw-shaped parts. Additionally, a novel forming process is proposed to solve the problems of serious material waste and low production efficiency for the screw-shaped parts. In the proposed process, the semi-solid spherical grain is firstly prepared by radial forging and the isothermal treatment of long-shaft raw materials. The large strain energy can be stored in the bar by the radial forging of long-shaft raw materials, which is used to induce the generation of semi-solid spherical grains with the assistance of the isothermal procedure. After that, the screw is fabricated by the high-efficiency semi-solid closed extrusion process.

show abstract

Section: Traditional Cutting Processmentioning

confidence: 99%