An-Najah National University

Ahmad Ramahi


  • Bookmark and Share Email
  • Tuesday, March 24, 2009
  • Design and Construction of a Deep Drawing Machine: Experimental Investigation of Limiting Drawing Ratio
  • Published at:Not Found
  • This paper presents the work implemented in designing, constructing and operating a model of a cheep hydraulic deep during machine (DDM), which is currently utilized in the manufacturing process lab in the Industrial engineering Department (IED) at An Najah National University. The machine is being used in conducting different experiments related to the deep drawing process in general and in investigating the limiting drawing ratio(LDR) in particular.

    As known, deep drawing can be defined as a sheet- metal working process in which a punch draws a blank sheet into a die cavity to form cup-shaped or box-like parts. One of the feasibility measures of deep drawing process is the LDR, which is defined as the ratio of the maximum starting blank sheet diameter to punch diameter.

    This work was carried out in three stages; the first was the design stage, in which all design calculations of the DDM elements were based on the specifications of the product (cup) to be drawn. The second was construction stage, in which the DDM elements were fabricated   and assembled at the engineering workshops of the university. The last was operation and experimentation stage, in which the (DDM) was tested by conducting different experiments.

    As a conclusion, our experience in designing and constructing a mechanical lab equipment was found to be successful in terms of obtaining practical results that agree with those available in literature, saving money relative to the cost of a similar purchased equipment, as well as enhancing the students abilities in understanding the deep drawing process in particular and machine design concepts in general.    

  • Bookmark and Share Email
Leave a Comment


  • No Attachments Found for this Article


Ahmad Abdel-Hafeez Dawood Ramahi
Show Full ProfileEnglish CV
Please do not email me if you do not know me
Please do not e-mail me if you do not know me