Numerical analysis for rock cutting force prediction in the tunnel boring process

In the field of underwater emergency maintenance, submarine pipeline cutting is generally performed by a diamond wire saw. The process, in essence, involves diamond grits distributed on the surface of the beads cutting X56 pipeline steel bit by bit at high speed. To find the effect of the different parameters (cutting speed, coefficient of friction and depth of cut) on cutting force, the finite element (FEA) method and response surface method (RSM) were adopted to obtain cutting force prediction models. The former was based on 64 simulations; the latter was designed according to DoE (Design of Experiments). Confirmation experiments were executed to validate the regression models. The results indicate that most of the prediction errors were within 10%, which were acceptable in engineering. Based on variance analyses of the RSM models, it could be concluded that the depth of the cut played the most important role in determining the cutting force and coefficient the of friction was less influential. Despite making little direct contribution to the cutting force, the cutting speed is not supposed to be high for reducing the coefficient of friction. The cutting force models are instructive in manufacturing the diamond beads by determining the protrusion height of the diamond grits and the future planning of the cutting parameters.

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Optimization of cutter posture based on cutting force prediction for five-axis machining with ball-end cutters

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-014-6719-1 ◽

2015 ◽

Vol 78 (5-8) ◽

pp. 1289-1303 ◽

Cited By ~ 19

Author(s):

L. Geng ◽

P. L. Liu ◽

K. Liu

Keyword(s):

Cutting Force ◽

Cutting Force Prediction ◽

Force Prediction ◽

Five Axis

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Analysis of Cutting Force in Elastomer End-Milling

International Journal of Automation Technology ◽

10.20965/ijat.2017.p0958 ◽

2017 ◽

Vol 11 (6) ◽

pp. 958-963

Author(s):

Koji Teramoto ◽

◽

Takahiro Kunishima ◽

Hiroki Matsumoto

Keyword(s):

Parameter Identification ◽

Cutting Force ◽

Cutting Forces ◽

End Milling ◽

Process Models ◽

Force Model ◽

Cutting Force Model ◽

Cutting Force Prediction ◽

Force Prediction ◽

The Stability

Elastomer end-milling is attracting attention for its role in the small-lot production of elastomeric parts. In order to apply end-milling to the production of elastomeric parts, it is important that the workpiece be held stably to avoid deformation. To evaluate the stability of workholding, it is necessary to predict cutting forces in elastomer end-milling. Cutting force prediction for metal workpiece end-milling has been investigated for many years, and many process models for end-milling have been proposed. However, the applicability of these models to elastomer end-milling has not been discussed. In this paper, the characteristics of the cutting force in elastomer end-milling are evaluated experimentally. A standard cutting force model and its parameter identification method are introduced. By using this cutting force model, measured cutting forces are compared against the calculated results. The comparison makes it clear that the standard cutting force model for metal end-milling can be applied to down milling for a rough evaluation.

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