MKT 3821 Machine Elements Gr.1 and Gr.2
Fall 2023-24 Project – 1
The figure above shows a screw press. In accordance with the provided elements below and by
employing the design parameters presented in the design parameters file, design the system.
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Determine the required preload force and torque for each screw.
Size the threaded screws
Design gears (determine the sizes and number of teeth)
Select the motor (determine the power and the torque at the required speed)
Perform strength analysis for columns and the ram (with necessary simplifications).
Select the bearings and calculate the life.
Convey your design on a 2D assembly (technical) drawing with a bill of materials.
Instructions
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The report should be submitted in pdf format.
File name must be: “StudendID _Gr_Name-Surname”
Format (20 pts): The format and organization of the system design will be assessed, accounting for 20
points. This includes how well the information is presented and structured.
Powerscrew Efficiency (10 pts): The efficiency of the powerscrew within the system will be evaluated, and
up to 10 points can be awarded for its performance.
Powerscrew Selection, Force, Torque, Metric (20 pts): The selection and utilization of the powerscrew,
considering aspects such as force, torque, and adherence to metric standards, will be assessed, with a
maximum of 20 points available.
Motor Selection, Power, Torque, Speed (10 pts): The choice of motor, taking into account factors like
power, torque, and speed, will be evaluated, and up to 10 points can be assigned based on the appropriateness
of the selection.
Strength, Column, Ram, Screw (10 pts): The strength of components such as columns, rams, and screws
in the system will be examined, and a maximum of 10 points can be awarded for their durability and
suitability.
Bearings, Life, Bearing Type, Diameters (10 pts): The bearings used in the design, their expected lifespan,
bearing types, and diameters will be considered, with a potential score of up to 10 points for this aspect.
Technical Drawing Clarity (10 pts): The clarity and completeness of the 2D assembly technical drawing
will be evaluated. Up to 10 points will be awarded for a drawing that effectively communicates the design,
including dimensions, labels, part placement, and any necessary details.
Bill of Materials Accuracy (10 pts): The accuracy and completeness of the bill of materials (BOM) will be
reviewed. Up to 10 points will be awarded for a BOM that clearly lists all components, materials, quantities,
and relevant specifications.