Analysis of Dynamic Characteristics of Boring Tool Holder

In this paper, a torus is designed as an adding mass to modify the dynamic characteristics of the tool-holder system in free boundary condition and in fixing boundary condition. The torus is fixed on the holder of a given face milling cutter, which may change the mass distribution and the stiffness distribution of the system, to adjust the frequency and damping ratio of the tool tip. Although the dynamic characteristics of the tool tip are significantly influenced by holder-spindle interface, the influence of the tool-holder can’t be neglected. In this attempt, by adding mass on the tool holder, the first order frequency decreased by 37% in free boundary condition and 6.7% in fixing boundary condition. The first damping radio increased by 48% in free boundary condition and 4.5% in fixing boundary condition. Chatter suppression is verified in the cutting process by adding mass on the holder.

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Hydraulic Shock Mechanism for Releasing Stuck Boring Tool And Recording Dynamic Characteristics of Impact

Information systems mechanics and control ◽

10.20535/2219-380415201688790 ◽

2016 ◽

Vol 0 (15) ◽

pp. 69-76

Author(s):

Катерина Григорівна Левчук ◽

Василь Іваноович Векерик ◽

Василь Михайлович Мойсишин

Keyword(s):

Dynamic Characteristics ◽

Hydraulic Shock ◽

Boring Tool ◽

Shock Mechanism

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Enhancing the process capability of machining process of boring tool holder by application of six sigma methodology

Materials Today Proceedings ◽

10.1016/j.matpr.2021.09.043 ◽

2021 ◽

Author(s):

Sudheer D. Kulkarni ◽

N.D. Prasanna ◽

S. Mirunalini ◽

C. Akshaya ◽

Reddivari Deekshitha ◽

...

Keyword(s):

Six Sigma ◽

Process Capability ◽

Machining Process ◽

Tool Holder ◽

Boring Tool ◽

Six Sigma Methodology

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Dynamics prediction of spindle system using joint models of spindle tool holder and bearings

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406215569588 ◽

2015 ◽

Vol 229 (17) ◽

pp. 3084-3095 ◽

Cited By ~ 7

Author(s):

Chao Xu ◽

Jianfu Zhang ◽

Dingwen Yu ◽

Zhijun Wu ◽

Pingfa Feng

Keyword(s):

Dynamic Characteristics ◽

Impact Testing ◽

Hertzian Contact ◽

Distributed Model ◽

Response Analysis ◽

System Modelling ◽

Joint Models ◽

Spindle System ◽

Tool Holder ◽

Modelling Method

Spindle system design requires the simulation of dynamic characteristics with consideration of joint characteristics. A spindle system modelling method using a spindle tool holder and bearing joints was presented for the prediction of dynamic behaviours. A substructure receptance coupling method was used to model the joints of the spindle tool holder and bearings, and the identification method of joint parameters was developed. The parameters of spindle tool holder joint were identified from the experimental platform based on the distributed model, and the parameters of the bearing joints were obtained by the Hertzian contact. Timoshenko beams were used to describe the spindle system components. The modal and harmonic response analysis was performed to predict the dynamic characteristics of the spindle system. The prediction results of natural frequency and the dynamic response were validated by impact testing. The model showed a good match for predicting the dynamic characteristics of the spindle system. The presented modelling method is useful in the performance evaluation of spindle system.

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