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Numerical modelling of ground surface topography: effect of traverse and helical superabrasive grinding with touch dressing

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Abstract

Grinding processes are often used for final finishing of components because of their ability to satisfy stringent requirements of surface roughness and dimensional tolerance. Surface topography generated during grinding depends upon many parameters like wheel parameters, wheel velocity, downfeed, grit density etc. and it also depends upon the type of grinding procedures (viz. plunge grinding, traverse grinding, helical grinding, touch dressing etc.) employed. Therefore, a correct examination of the parameters and type of process employed to carry out grinding are necessary. This paper is an attempt to develop the relation between the different grinding parameters and the grinding procedures like plunge, traverse and helical superabrasive grinding with touch dressing and the average surface roughness. For this purpose, a numerical simulation technique has been implemented to generate the grinding wheel topography. The ground workpiece surface has also been generated by simulating removal of work material depending upon the trajectory of the abrasive grits on the grinding wheel without taking rubbing and ploughing into consideration.

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Abbreviations

α :

Semi apex angle of the square pyramidal grit

θ :

Rotational angle of any grit

a :

Infeed or downfeed

b :

Base dimension of the grit

c :

Grit density per unit area

d g :

Average grit diameter

d s :

Diameter of the grinding wheels

h :

Height of the grit

h a :

Average grit depth of cut

x, z :

Coordinate of the grit tip

v g :

Grinding speed

v w :

Table speed in surface grinding

R a :

CLA surface roughness

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Authors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur, West Bengal, 721302, India

    Shubham Kumar & S. Paul

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  1. Shubham Kumar
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  2. S. Paul
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Correspondence to Shubham Kumar.

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Kumar, S., Paul, S. Numerical modelling of ground surface topography: effect of traverse and helical superabrasive grinding with touch dressing. Prod. Eng. Res. Devel. 6, 199–204 (2012). https://doi.org/10.1007/s11740-012-0370-1

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  • DOI: https://doi.org/10.1007/s11740-012-0370-1

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