Experimental investigation on reduction of broaching forces by active external vibrations

Broaching is very efficient for machining complex-shaped slots in turbine disks made of high thermal resistant super-alloys. However, large cutting forces and high thermal flux lead to high tool wear. To reduce the broaching forces, this paper proposes a vibration assisted broaching system, includin...

Full description

Saved in:
Bibliographic Details
Published in:Machining science and technology 2021-05, Vol.25 (3), p.438-454
Main Authors: Ying, Shen-Shun, Zhang, Shun-Qi, Lin, Lv-Gao, Wang, Yang-Yu, Schmidt, Rüdiger
Format: Article
Language:English
Subjects:
Broaching machine
cutting force
electrohydraulic vibration exciter
turbine disks
vibration assisted broaching
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Broaching is very efficient for machining complex-shaped slots in turbine disks made of high thermal resistant super-alloys. However, large cutting forces and high thermal flux lead to high tool wear. To reduce the broaching forces, this paper proposes a vibration assisted broaching system, including the main components of a hydraulic horizontal internal broaching machine, an electrohydraulic vibration exciter, a 2-dimensional valve and a control unit. A force measuring structure and vibration signal acquisition module are designed and integrated into the system. By changing the frequency of the active vibration, cutting forces are obtained and analyzed by fast Fourier transformation method. The experimental results show that through the additional imposed vibration, static and dynamic broaching forces are significantly reduced.
ISSN:1091-0344
1532-2483
DOI:10.1080/10910344.2021.1903921