文档介绍：? UGS Corp. 2004. All rights reserved. HSM October 2005 Cutting Speed Cutting Speed Chip removing Force Critical Findings Cutting Volume Surface Quality Tool Life Chip Removing Force 4,000 rpm 20,000 rpm Cutting depth in mm Cutting depth in mm Radial load ( daN ) Radial load ( daN ) General Formulas cm 3/min ae *ap *Vf 1000 Q Rate of metal removing mm Vf nz * N fz Infeed per cutting edge mm/min N *fz *na Vf Feedrate m/min N *π*?1000 Vc Cutting speed min -1 Vc * 1000 π*? N Rotary speed Number of cutting edges Number nx Feed per cutting edge mm fz Feed per minute mm/min Vf Cutting speed m/min Vc Spindle speed per minute/rotation per minute min -1N Rate of metal removing cm 3 /min Q Effective tool diameter mm Deff Tool diameter mm ph Axial feed in mm mm ap Radial feed in mm mm ae Characteristic of HSM ? Increase of the cutting speed ? Increase of cutting zone temperature ? Reduction of friction coefficient between the tool and workpiece ? Increase of reshaping resistance ? Provokes additional tool wear ? Change in chip formation and chip run ? Higher reshaping speed ? Increase of chip bending, shearing angle and lead angle ? Reduction of surface friction between the tool and chip ? Reduction of the cutting force ? Positive influence on accuracy and surface quality ? Thin walled work-pieces and slimmer tools can be used 高速加工的主要特性?提高切削速度?切削区温度升高?***与工件之间的磨擦系数降低?改变切屑形状和形成过程?切屑卷曲度增大,剪切角及前角增大?***与切屑之间的磨擦系数降低?减低加工载荷?改善加工精度和质量?改善加工表面光洁度? UGS Corp. 2004. All rights reserved. HSM Strategy ? UGS Corp. 2004. All rights reserved. Critical Elements of HSM Tool/Holder Tool/Holder Machining Techniques Machining Techniques munications munications Toolpath Generation Toolpath Generation CAM System CAM System Machine Design Machine Design Control Control Technology Technology 1 2 3 4 5 6 7 8 9 10 11 Length/Diameter Length/Diameter Length/Diameter coefficient Length/Diameter coeffici