Theoretical and numerical investigation of workpiece jamming in fixture using block and palm case study

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PARVAZ HADI

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MANUFACTURING ENGINEERING Year:2019 | Volume:6 | Issue:3 Page(s): 20-27

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Information Journal Paper

Title

Theoretical and numerical investigation of workpiece jamming in fixture using block and palm case study

Author(s)

PARVAZ HADI | Issue Writer Certificate

Keywords

Adams

Block and Palm

Fixture Design

Jamming

Numerical Analysis

Abstract

Jamming is defined as sudden and unwanted immobilization of workpiece during its loading/unloading into the fixture. Investigation of workpiece Jamming in fixture and prediction of its occurrence during Fixture Design process may induce to modification of the fixturing plan, reduction of the fixture fabrication costs and decreasing of the Jamming-related consequences. The present study focuses on the numerical investigation of workpiece Jamming in fixture using Block and Palm case study and comparison of its results to the theoretical predictions. For this purpose, Numerical Analysis of Block and Palm case study is conducted using Adams® software. Results of Numerical Analysis represent that Jamming is occurred for block by traveling of distance equal to 0. 754 on the horizontal surface. Numerical results are compared to the theoretical predictions. Theories for prediction of Jamming incorporate two main methods; first, development of dynamics equation for calculation of velocity and acceleration at the contact points and second, the minimum norm principle. Agreement of the numerical results to the predictions of the first-category theoretical analyses (calculation of the velocity and acceleration at the contact points) confirmed the accuracy of the numerical results. Also, effects of the parameters including coefficient of friction between the workpiece and base plate, angular velocity of palm and mass of block are studied on the block’ s Jamming distance.

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APA: Copy

PARVAZ, HADI. (2019). Theoretical and numerical investigation of workpiece jamming in fixture using block and palm case study. IRANIAN JOURNAL OF MANUFACTURING ENGINEERING, 6(3 ), 20-27. SID. https://sid.ir/paper/268246/en

Vancouver: Copy

PARVAZ HADI. Theoretical and numerical investigation of workpiece jamming in fixture using block and palm case study. IRANIAN JOURNAL OF MANUFACTURING ENGINEERING[Internet]. 2019;6(3 ):20-27. Available from: https://sid.ir/paper/268246/en

IEEE: Copy

HADI PARVAZ, “Theoretical and numerical investigation of workpiece jamming in fixture using block and palm case study,” IRANIAN JOURNAL OF MANUFACTURING ENGINEERING, vol. 6, no. 3 , pp. 20–27, 2019, [Online]. Available: https://sid.ir/paper/268246/en

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