Export file:

Format

  • RIS(for EndNote,Reference Manager,ProCite)
  • BibTex
  • Text

Content

  • Citation Only
  • Citation and Abstract

Effect of cutter tip angle on cutting characteristics of acrylic worksheet subjected to punch/die shearing

Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan

Special Issues: Interaction of Multiple Cracks in Materials -Volume 1

This paper aims to describe the effect of tool geometry on cutting characteristics of a 1.0 mm thickness acrylic worksheet subjected to a punch/die shearing. A set of side-wedge punch and side-wedge die which had the edge angle of 30°, 60° and/or 90° was prepared and used for cutting off the worksheet. A load cell and a CCD camera were installed in the cutting system to investigate the cutting load resistance and the side-view deformation of the worksheet. From experimental results, it was revealed that a cracking pattern at a sheared zone was remarkably affected by the edge angle of cutting tool. A cracking direction was almost coincident to the edge angle when considering the punch/die edge angle of 30°, while any matching of them was not observed in case of the punch/die edge angle of 60°, 90°. By using the 30° side-wedge tool, a flat-smooth sheared surface was generated. When combing the punch edge angle of 90° and the die edge angle of 60°, the cracking profile was characterized by the both edge angles for each part (die and punch). Carrying out an elasto-plastic finite element method analysis of cutter indentation with a few of symmetric and asymmetric punch/die edges, the stress distribution and deformation flow at the sheared zone were discussed with the initiation of surface cracks
  Figure/Table
  Supplementary
  Article Metrics

References

1. Crawford RJ (1999) Plastics Engineering, 3 Eds., Burlington:Elsevier Butterworth-Heinemann, 1–40.

2. Al-Rifaiy MQ (2010) The effect of mechanical and chemical polishing techniques on the surface roughness of denture base acrylic resins. Saudi Dent J 22: 13–17.    

3. Shimizu H, Tsue F, Chen Z, et al. (2008) Bonding of autopolymerizing acrylic resins to magnetic stainless steel alloys using metal conditioner. J Dent 36: 138–142.    

4. Klocke F, Sweeney K, Raedt HW (2001) Improved tool design for fine blanking through the application of numerical modeling techniques. J Mater Process Tech 115: 70–75.    

5. Chen ZH, Tang CY, Lee TC (2004) An investigation of tearing failure in fine-blanking process using coupled thermo-mechanical method. Int J Mach Tool Manu 44: 155–165.    

6. Thipprakmas S (2009) Finite-element analysis of V-ring indenter mechanism in fine-blanking process. Mater Design 30: 526–531.    

7. Mitsomwang P, Nagasawa S (2013) Cutting Behavior of Acrylic Thick Sheet Subjected to Squared Punch Shearing. J Chem Chem En 7: 653–665.

8. Nagasawa S, Masaki Y, Fujikura M, et al. (2011) Analysis of Cutting Characteristic of Polycarbonate Sheet Subjected to Wedge Indentation by Knife Edge and Grooved Plate. Mach Sci Technol 15: 110–131.    

9. MSC Software Corp (2010) In: Marc 2010 Volume A: Theory and User Information, DEACT GLUE function, 567–569.

10. MSC Software Corp (2010) In: Marc 2010 Volume A: Theory and User Information, Remeshing Techniques, 91–93.

11. MSC Software Corp (2010) In: Marc 2010 Volume C: ADAPT GLOBAL function, 263–265.

Copyright Info: © 2016, Shigeru Nagasawa, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

Download full text in PDF

Export Citation

Article outline

Show full outline
Copyright © AIMS Press All Rights Reserved