Dissertation > Excellent graduate degree dissertation topics show

Milling Limit Depth Prediction of Hardened Die Steel

Author: MaJing
Tutor: WangYiWen
School: Harbin University of Science and Technology
Course: Mechanical Engineering
Keywords: hard milling mold machining tool edge tool deformation limitcutting depth
CLC: TG54
Type: Master's thesis
Year: 2014
Downloads: 8
Quote: 0
Read: Download Dissertation

Abstract


In our country, automobile manufacturing industry occupies an importantposition in manufacturing, at present, in order to improve die quality smallamount of cutting parameters are used, and the influence of tool edge radius onthe processing quality which can not be ignored. The minimum cutting thicknessis existence in plastic materials machining progressing as the existence of tooledge radius, when the actual cutting thickness is less than the minimum cuttingthickness, cutting the surface of workpiece will enable. And the seriousdeformation of tool appeared in hardened steel mold machining processing. Asthe improper selection of allowance, the sliding phenomenon often appearsbetween tool and workpiece, and reducing the accuracy of mold machining.Therefore, to determine the minimum cutting thickness of mold material, moldsteel milling limit cutting depth prediction model under the condition ofconsidering the tool deformation which has an important significance to improvethe quality of mold finishing machining.Through the finite element simulation, theoretical analysis and experimentalmethods, and taking Cr12MoV which is common die material used in automobilepanel producing as research object, limit cutting depth in the finishing process isresearched in this study. Through the finite element simulation softwareABAQUS, this paper makes research on the minimum cutting thickness of moldsteel materials under different tool edge radius conditions, and then therelationship between mold steel materials minimum cutting thickness and radiusis determined.A new test method is designed by which the millingtrace can be observed,through this method, the minimum cutting thickness of the workpiece materialcan be researched by experiment, the minimum cutting thickness of mold steel isdetermined, the accuracy of the simulation model is verified, and the influence ofspeed effect on minimum cutting thickness of mold steel materials is studied. Established milling depth limit prediction of die steel model whichconsidering cutting parameters, tool radius, curvature radius of workpiece andtool deformation on the ultimate impact of the depth.Hardened steel milling testswere conducted with different radius of curvature of workpiece, and the influenceof spindle speed, feed rate and radius of curvature of the workpiece to the depthof cut. Study verified the accuracy of the milling limit depth model of cuttingtool which considering tool deformation, and provided basis for the selection andoptimization of mold finish cutting allowance.

Related Dissertations

  1. The Calculation of the Friction Factors on the Tool Edge Based on Theory of Slip Line Field,TG506.2
  2. Theory and Application of Finishing Turning 45 Hardened Steel,TG506
  3. Precision cutting tool edge titanium alloy Ti6Al4V Mechanism and Application Research,TG501
  4. Research on Mechanism of Super-Thin Precision Cutting and Machined Surface Quality,TG501.1
  5. Research on Processing Technology of Pet Bottle Blow Mold Cavity Parts,TQ320.52
  6. Mechanism Study of Micro-cutting Based on Dislocations and Strain Gradient Theory,TG501.1
  7. Research on Edge Preparation and Flank Wear Modeling of Milling Cutting Insert,TH117
  8. Experimental Study of Influences of Drill Edge Preparation on its Cutting Performance,TG713.1
  9. Experimental Study of Multi-signal Monitoring Based on Hard Milling,TG54
  10. Tool Wear and Its Effect on Surface Integrity in Hard Milling H13Steel,TG54
  11. Research on the Expert System for Optimizing Hard-milling Process,TG54
  12. PC motion control card Engraving and milling system development based on simulation studies,TG54
  13. Research on the Milling Performance and Parameters Optimization with Large Parts of Heavy Machine,TG54
  14. Study on Influencing Factors of Thin-walled Workpiece’s Surface Quality during Peripheral Milling,TG54
  15. Experimental Study on Machining Ultra-High Strength Steel 30Cr3SiNiMoVA by Milling Instead of Grinding,TG54
  16. Research on Processing Parameter Optimization of High-speed Milling Ultra-high Strength Steel 30Cr3SiNiMoVA,TG54
  17. Nuclear Power Plant Steel Milling Surface Integrity Study,TG54
  18. Downhole drilling motor stator helical surface milling technology,TG54
  19. Keyway milling of ultrafine pole,TG54
  20. Stitching hardened steel ball head milling force modeling and simulation and experimental study,TG54
  21. ABS -based high-speed milling of aluminum hydraulic valve Processing Research,TG54

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