Structure Topology Optimization of the Spindle Box of a Machining Center

2011 ◽  
Vol 421 ◽  
pp. 225-229 ◽  
Author(s):  
Zi Liang Zhou ◽  
Jian Song ◽  
Ming Cong
Keyword(s):  
Boundary Condition ◽  
Topology Optimization ◽  
High Precision ◽  
High Speed ◽  
Box Model ◽  
High Speed Machining ◽  
Structure Topology ◽  
Machining Center ◽  
Paper Structure ◽  
Stiffness Criterion

To meet the need of high precision and speed, the movable parts of a high speed machining center should be as light as possible with high stiffness, which can be realized effectively via structure topology optimization. In this paper, structure topology optimization of the spindle box of a type of machining center was carried out based on the software of OptiStruct of HyperWorks. In the course of design, a stiffness criterion was put forward to deal with the uncertainty of cutting load on a machining center. And based on the criterion, the load boundary condition of the spindle box model was defined. And a clear structure was finaly obtained in the postprocessor of OptiStruct.

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

The Optimization Design of Arm Bracket Structure Topology Based on ANSYS

2013 ◽  
Vol 834-836 ◽  
pp. 1464-1469
Author(s):  
Sheng Mei Luo ◽  
Zhao Yang Niu ◽  
Wei Liu ◽  
Fu Fang Luo ◽  
Jun Jun Jiang
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Optimal Topology ◽  
Dimensional Model ◽  
Structure Topology ◽  
Change Mechanism ◽  
Machining Center ◽  
Automatic Tool Change ◽  
Automatic Tool ◽  
Ansys Workbench

The detail analysis proposal of the cylinder body is put forward for the automatic tool change mechanism of the QYJ-21 type horizontal machining center. It consists of three main aspects. Firstly, the dimensional model of the cylinders arm bracket portion will be created. Secondly, the topology optimization design of the arm bracket is implemented based on ANSYS Workbench. Finally, meeting the stiffness requirements, the optimal topology shape will be established, for it had the lightest weight.

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.

Sign in / Sign up

Export Citation Format

Share Document