Structural Optimization Method of Key Part of High Speed Machining Center

2011 ◽  
pp. 203-208
Author(s):  
Liu Yu ◽  
Liu Chunshi ◽  
Mao Lieqian ◽  
Zhang Yimin
Keyword(s):  
Structural Optimization ◽  
High Speed ◽  
Optimization Method ◽  
High Speed Machining ◽  
Machining Center

An experimental investigation of spindle rotary error on high-speed machining center

2013 ◽  
Vol 70 (1-4) ◽  
pp. 327-334 ◽  
Author(s):  
Lan Jin ◽  
Zhaoyang Yan ◽  
Liming Xie ◽  
Weidong Gou ◽  
Linhu Tang
Keyword(s):  
Experimental Investigation ◽  
High Speed ◽  
High Speed Machining ◽  
Machining Center

Cutting Force and Tool Deflection Predictions for High Speed Machining of Hard to Cut Material

2010 ◽  
Vol 154-155 ◽  
pp. 1157-1164 ◽  
Author(s):  
Jinn Jong Sheu ◽  
Dong Mei Xu ◽  
Chin Wei Liu
Keyword(s):  
Cutting Force ◽  
Cutting Forces ◽  
High Speed ◽  
Force Model ◽  
Beam Model ◽  
High Speed Machining ◽  
Tool Deflection ◽  
Machining Center ◽  
Helical Angle ◽  
Cutting Experiment

The dimension accuracy and the too life are the major issues of the machining of hard-to-cut materials. To fulfill the requirements of accuracy and tool life needs not only well planning of cutting path but also the proper cutting conditions of cutters. The vibration and deflection of cutters caused by poor selection of cutting conditions can be predicted using models of cutting force and tool deflection. In this paper, a cutting force model considering the effect of tool helical angle and a cantilever beam model of tool deflection were proposed for the high speed machining of hard-to-cut material SKD11. The shearing force, the plowing forces, and the helical angle of cutters are considered in the elemental force model. The material of workpiece, SKD11, studied in this paper is commonly used for the die and mold industries. The cutting constants of the proposed force model are determined via the cutting experiments carried out on a high speed machining center. A dynamometer and a high frequency data acquisition system were used to measure the x-, y-, and z-direction cutting forces. The obtained cutting constants were used to predict the cutting forces and compared with the results obtained from the cutting experiment of verification using cutters with different helical angles. The theoretical and the experimental cutting forces in the x-, y-, and z- direction are in good agreement using flat cutters with 30 and 45 degrees of helical angle. The dimension deviations of the cut surface in the cutting experiment case of tool deflection were measured using a touch probe and an infrared receiver installed on the machining center. The measured average dimension deviation, 0.163mm, is close to the predicted tool deflection, 0.153mm, using the proposed cantilever beam model. The comparisons of the cutting forces and the average of the cut surface dimension deviation are in good agreement and verify the proposed cutting force and the tool deflection models are feasible and useful.

Measurement of Tool Unbalance on High-speed Machining Center

2000 ◽  
Vol 2000.2 (0) ◽  
pp. 151-152
Author(s):  
Fumio OBATA ◽  
Hisataka TANAKA ◽  
Kazutake UEHARA ◽  
Michio MORISHITA ◽  
Hiroyuki NISHIMOTO
Keyword(s):  
High Speed ◽  
High Speed Machining ◽  
Machining Center

Development of an Intelligent High-Speed Machining Center

CIRP Annals ◽  
2001 ◽  
Vol 50 (1) ◽  
pp. 275-280 ◽  
Author(s):  
M. Mitsuishi ◽  
S. Warisawa ◽  
R. Hanayama
Keyword(s):  
High Speed ◽  
High Speed Machining ◽  
Machining Center

Part Accuracy in High-Speed Machining: Preliminary Results

2006 ◽  
Author(s):  
Tony L. Schmitz ◽  
John C. Ziegert ◽  
Raul Zapata ◽  
J. Suzanne Canning
Keyword(s):  
High Speed ◽  
Cnc Machining ◽  
High Speed Machining ◽  
Tracking Errors ◽  
Error Sources ◽  
Preliminary Results ◽  
Machining Center ◽  
Milling Operations ◽  
Dynamic Cutting Force ◽  
Dimensional Errors

This paper provides preliminary results from a study of the relative contributions of various error sources to overall dimensional errors in parts produced by milling operations. The error sources studied include machine geometry errors, thermal errors, controller tracking errors, and errors due to cutting forces. These error sources are modeled and measured on a modern high-speed machining CNC machining center. It is found that dynamic cutting force errors can be a significant contributor to part dimensional errors in high-speed milling operations.

Experimental Verification of Dynamic Behavior of a Capsule-Type Modular Machine Tool for Multifunctional Processes

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Sungcheul Lee ◽  
Jong-Kweon Park
Keyword(s):  
Machine Tool ◽  
Frequency Response Function ◽  
High Speed ◽  
Natural Frequencies ◽  
High Speed Machining ◽  
Capsule Type ◽  
Laser Milling ◽  
Machining Center ◽  
Simulation Results ◽  
Reconfigurable Machine Tool

A capsule-type modular machine tool was developed, which was capable of multifunctional processes with a single setup. This mechanism was designed according to the concept of a reconfigurable machine tool (RMT), which can transform from a machining center to a lathe, and is capable of multiple functional processes, such as laser, milling, and grinding processes. After addressing the kinematics of the machine, a static structural analysis was performed and some ribs were added to enhance the stiffness. A frequency response function (FRF) simulation was conducted on the modified machine and natural frequencies were determined to avoid resonance in processing. Then, an FRF test was performed to find the actual natural frequencies, to confirm the simulation results. After investigating the natural frequencies, high-speed machining was performed to make 300 μm sized patterns.

Fuzzy Finite Element Optimization of High-Speed Vertical Machining Center Spindle Box

2011 ◽  
Vol 137 ◽  
pp. 414-418
Author(s):  
Ju Jiang Cao ◽  
Lei Hua Wang ◽  
Jun Lu
Keyword(s):  
Finite Element ◽  
High Speed ◽  
Fuzzy Optimization ◽  
Optimal Solution ◽  
Optimization Method ◽  
Decision Makers ◽  
Fuzzy Information ◽  
Machining Center ◽  
Fuzzy Finite Element ◽  
Favorable Conditions

The key component of the spindle box for using the fuzzy optimization method for high-speed vertical machining center was optimized. Through the analysis of the fuzzy information of the components, the membership functions of the constraint were determined, and the satisfactory results were obtained according to the characteristics of the actual problems or decision-makers intention. Through fuzzy finite element method, the optimal solution in the space was adjusted, the design of multiple choices was provided for designers, and the favorable conditions for other design of parts were created.

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