Dissertation > Excellent graduate degree dissertation topics show

Experimental Study of Friction on the Tool-Chip Contact Field in Metal Cutting Process

Author: WeiYanJie
Tutor: WangJiaChun
School: Yanshan University
Course: Mechanical Manufacturing and Automation
Keywords: Metal cutting Tool-chip contact Friction state Chip Experiment
CLC: TG501.3
Type: Master's thesis
Year: 2008
Downloads: 194
Quote: 2
Read: Download Dissertation

Abstract


It is important to describe friction conditions at the tool and chip contact area in machining, since it affect many variables such as plastic deformation of the metal. With an accurate model of the friction conditions it is also possible to determine cutting force, temperature distribution, chip formation more efficiently. Knowledge of the friction conditions at the tool and chip contact area is extremely important for achieving accurate machined work surface. There has been a significant meaning for investigating the friction conditions at the tool and chip contact area.For the friction conditions at the tool-chip contact in the metal cutting process, the author chooses high-speed steel as the tool material and C35 steel as the work piece material was studied and analyzed in this paper.Firstly, the author makes some normal shape tools and conducts cutting experiment, uses SEM、surface roughness apparatus and micro hardness measuring device to investigate and measure the parameter of tool face at different area after cutting. The result shows that microstructure, surface shape and micro hardness are found to be able to reflect the friction state at different area.In order to obtain the different friction distortion chip through different friction area, the author designed a series of experiment tools, which have different tool face in length. Used the tools, have carried out several groups cutting experiment, obtained different chips and measured cutting force at the same time. To observe and measure the surface shape、micro hardness and surface microstructure of the chip, calculated the tool-chip friction in the cutting process and make contrast with the surface shape、micro hardness and surface microstructure of the tool face, according to the similar changes of the three character on the tool face and chip surface, it can reflect the tool-chip friction state at different area.Based on experiments, a new partitioned method of the tool-chip friction area for high-speed steel cutting C35 steel is proposed. Based on the method, the tool and chip contact area have been plotted three areas:Ⅰarea(near the cutting edge) andⅡarea(adjacent toⅠ)can be distinguished accurately through microstructure image of the tool and surface profile curve;Ⅱarea andⅢarea(apart from the tool edge ) can be distinguished by compared the real measured friction with the theoretical calculated friction.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. The Design and Experimental Rearch of Disposable Catalyzer in the Process of Coal Liquefaction,TQ529.1
  3. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  4. The Design and Accomplishment of Simulition Platform for Voltage Clamp Experiment Based on Cell Electrophysiological Model,R318.0
  5. The Current Situation and Countermeasure Research on Guangzhou High School Students’ Interests in Biology Experiment,G633.91
  6. Differences in the Productivity and Stress Resistance of Double Rice Cropping System between Different Fertilization Regimes in Jiangxi Province,S511.42
  7. The Research of Ian Hacking’s Thoughts on the New Experimentalism,N02
  8. Study on the Design of Magnetic Drum Planting Machine for Tobacco,S223.2
  9. Development of Small Mobile Cyclic Drying Machinery,S226.6
  10. The Study on the Detection Technologies and Equipment of Flue-cured Tobacco Leaves Physical Performance Parameters,S572
  11. Effects of Long-Term Green Manure Application on the Productivity and Stress Resistence of Double Rice Cropping System in Jiangxi Province,S511.42
  12. Action Research on "Unconventional" Experiments Improving the Effectiveness of Physics Concept Teaching in Junior High School,G633.7
  13. Study on the Extracting Technology of Polygonatum Polysaccharides and Preparation of the Polygonatum Sibiricum Yoghurt,TQ461
  14. Research on Key Technology of Recycling Horizontal Subsea Pipe Conector,TE973
  15. Theoretical Analysis and Experiment Study on Maize Pair Seeds Thresher,S226.1
  16. Studies on the Quality Standard of Brassica Rapa L.,R284.1
  17. Rat liver regeneration and acute liver failure occurring gene transcriptional profiling studies and their significance,Q418
  18. Domestic isoflurane inhalation anesthesia effect depends on learning and memory in adult rats related research,R965
  19. The Nonlinear Optical Properties of Fuorenyl-based Chromophores,O437
  20. Microfluidics pulse drive - control microarray spotting system design and experimental study,TN402
  21. The Practice and Theory on Blended Learning by COmputer in Physical Education,G807.0

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > General issues > Cutting principle and calculation > Cutting force, power
© 2012 www.DissertationTopic.Net  Mobile