OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
TO ELIMINATE BIG END OVER SIZE REJECTION BY SIZING PLUG
GAUGE ON CONNECTING ROD HONING MACHINE: A CASE
STUDY
Aditya Singh 1 and Rajeev Saha 2*
1 Manager, Hero Honda, Dharuhera, Haryana, India.
2 Asst. Prof., Department of Mechanical Engg., YMCA UST, Faridabad
2* Email: rajeevsaha@ymcaust.ac.in
Abstract
Connecting Rod or conrod used in a reciprocating piston engine connects the piston to the crank or crankshaft.
Together with the crank, they form a simple mechanism that converts linear motion into rotating motion. It was
observed that rejection rate of connecting rod being used in a two-wheeler industry was high. Identifying the
root cause of rejection and finding a solution to reduce or rather eliminate the rejection of connecting rod has
been dealt with in this case study.
Keywords: Connecting Rod, Reciprocating Engine, Crankshaft.
1. Introduction
Connecting rod is an important part of a two wheeler which converts linear motion of piston into rotating motion
of crank. As such it undergoes stringent checks of quality to ensure its proper functioning during actual
workload. The connecting rod machining process is shown in Fig 1.
Fig 1. Machining process of Connecting Rod
Mukai and Komatsu (1989) developed a method for manufacturing of conrod and got it patented. A new
technology known as the fracture splitting technology was developed in the beginning of the 1990s for
manufacturing conrods as described in Shuqin et al (2001) and Gu et al (2005).
Fig 2. Actual photograph of a Connecting Rod
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