Dissertation > Excellent graduate degree dissertation topics show

Studying for Cutting Performance of Supper-Hard Milling Cutter Based on Multi-Scale Effect

Author: LiKai
Tutor: BaiQingShun
School: Harbin Institute of Technology
Course: Mechanical Manufacturing and Automation
Keywords: polycrystalline diamond micro milling cutter scale effect finite element analysis wear characteristic surface roughness
CLC: TG54
Type: Master's thesis
Year: 2011
Downloads: 114
Quote: 0
Read: Download Dissertation

Abstract


With miro miniaturization being the core impetus of modern aviation and military affairs, micro-milling is recognized the most fit for machining micro parts, because of its unique advantages suitable for various materials of high precision processing in mesoscopic scales. Due to the decrease of the cutter and its cutting parameters, micro-milling has to face the special phenomenon caused by various scale effects, which is different from conventional cutting. Therefore, research on the wear mechanism of the cutter and the processing quality of the workpiece in scale effect, is important to promote the development of micro-milling technology and the equipment miniaturized in the national defense and civil field practicably. The research content of the subject includes the following three aspects:Firstly, the structure of the polycrystalline diamond micro milling cutter is designed, meanwhile the corresponding micro-milling finite element analysis also is completed. Through the calculation of the minimum thickness of cutting, the influence of micro-milling arose from the cutting edges obtuse radius and minimum cutting thickness in scale effect is analysed. Under the action of the scale effect, the unit cutting force of the micro-milling cutter increases nonlinearly with the decrease of the cutting depth. And the numerical simulation of the micro-milling cutter wear reaches the influence law of the cutting parameters to the cutter wear.Secondly, alclad is machined in micro-milling experiment. Wear morphology and damaged form of the polycrystalline diamond micro cutter is researched in micro-milling process with the SEM and EDS. According to it, five kinds of micro cutter wear characteristic is analysed.Finally, by detecting the surface roughness of the workpiece, the influence of the milling way to the surface quality is researched, and meanwhile the influence law of the cutting parameters to the roughness is analysed by the orthogonal experiment design. The experimental data is dealt with in regression analysis, and the numerical experience formula of the surface roughness is obtained, then getting a significant test.

Related Dissertations

  1. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  2. EDM Electrode Wear Mechanism and Control Research,TG661
  3. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  4. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  5. Design of Testing Equipment for Electronic Products,TN06
  6. Scale Effect on Spatial Expressions of Paddy Soil Organic Carbon in Tai Lake Region,S158
  7. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  8. The magnetorheological damper mechanical properties and Gun Recoil,TB535.1
  9. Nonlinear Structural Dynamics Analysis and Optimization Design on Naval Gun Driver,TJ391
  10. Study on Virtual Simulation Technology of Safety Valves Based on SolidWorks,TH134
  11. Analysis on Static-dynamic and Fatigue Characteristics of Metallurgical Overhead Traveling Crane,TH215
  12. The Effect of Different Microwave Polymerizations on Accuracy and Physical Properties of Denture Base Resin,R783.6
  13. Simulation of the Clinching Process Using FEA Method with Steel and Aluminum Alloy Sheets for Automotive Sunroof Frame,U463.83
  14. Dynamic Designanalysis and Optimization of Gantry Crane Girder Truss,TH213.5
  15. Comparison of the Physical and Mechanical Properties Among Four Kinds of Die Stone Casts,TQ177.3
  16. M1 of CRH2-300 Train Finite Element Analysis and Travelling Comfort,U266
  17. Influence of Surface Physical and Chemical Properties on Heat Transfer Characteristics of Steam Condensation,TK124
  18. The Structure Design of 2000kN Servo Press for Hot Forming,TG385
  19. Al Wire Bonding Failure and Automatic Optical Inspection on Power Device Leadframe,TG441
  20. The Finite Element Analysis and Structural Optimization of Aluminum Tank Semi-Trailer,U469.53
  21. The Research on Experiment and Theoretical Analysis of Insulation Composite Wallboard,TU551

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Milling and milling machine
© 2012 www.DissertationTopic.Net  Mobile