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Die Design for Shape Drawing to Improve the Dimensional Accuracy of a Hollow LM-Guide Rail

중공형 LM-Guide Rail의 치수정밀도 향상을 위한 형상인발 금형 설계

Park, J.H.;Lee, K.H.;Kim, S.M.;Kim, H.J.;Kim, S.J.;Kim, B.M.
박정현;이경훈;김성민;김희중;김성진;김병민

  • Received : 2015.05.11
  • Accepted : 2015.06.15
  • Published : 2015.10.01

Abstract

Multi-pass shape drawing is used to manufacture long products of arbitrary cross-sectional shapes. This process allows smooth surface finishes and closely controlled dimensions of the cross-sectional shape. Tube shape drawing for hollow type products provides material savings and weight reduction. The intermediate die shapes are very important in multi-pass tube shape drawing. In the current paper, the design method for the intermediate dies in a tube shape drawing process is developed using a die offset for corner filling (DOCF) method. Underfill defects are related to the radial velocity distribution of each divided section in the deformation zone. The developed intermediate die shape design was applied to the two-pass tube shape drawing with fixed mandrel for manufacturing a hollow linear motion (LM) guide rail. The proposed design method led to uniform and steady metal flow at each divided section. FE-simulations and experiments were conducted to validate the effectiveness of the proposed method in multi-pass tube shape drawing process.

Keywords

Intermediate Die Shape Design;Die Offset;Tube Shape Drawing;Fixed Mandrel

Cited by

  1. Roll design method using virtual flow line for multi-stage profile rolling process vol.32, pp.10, 2018, https://doi.org/10.1007/s12206-018-0928-8

Acknowledgement

Grant : 첨단 기계부품소재 인력양성사업단