Manufacturing Engineering - Lab Report Example

Engineering Design report Design of an electrically-powered device to lift an increasing load vertically up a copper pipe. of Boston Date Team Members TABLE OF CONTENTS 1.0 Executive Summary …………………………………………………….3 2.0 Introduction ……………………………………………………………….3 3.0 Engineering Analysis…………………………………………………….4 4.0 Project Description ……………………………………………………….5 5.0 Bill of Materials …………………………………………………………….6 6.0 Conclusion ………………………………………………………………………..6 1.

0 Executive Summary This report elaborates an engineering design project carried out by First year Mechanical Engineering Students from the University of Bolton. The aim of the project is to design, build and test an electrically powered device to lift an increasing load vertically up a copper pipe. The device should be compact, use minimum resources and usable in different applications. In the modern engineering world, there is a need for practitioners to understand the basic concepts of lifting, lowering, moving and stabilizing loads in relation to gravitational force.

This ability enables an engineer design effective machinery in confined spaces. The design process is highlighted in this report; including methodology, procedures, analysis and the end result. The report documents the full design process up to the manufacturing plan; the measures taken to ensure that all established consumer requirements and engineering specifications have been authenticated in the final prototype. 2.0 Introduction The aim of the project is to design and manufacture an electrically powered device that can be used in a variety of engineering applications such as lifting hoists, cranes, ski lifts etc.

Table 1 Engineering competition requirements to correspond with engineering specifications Requirement Metric scale for Importance(3 high, 1 low) Engineering Specification Compact 3 Supports weight effectively Safety 3 Lifting device falls within allocated space envelope Durability 2 Service Lifetime in months Lifting of a Load 3 Upward Support force 2.1 Safety Since the device may be improperly used and safety of a machinery is the key concern during its functionality; a safety factor of 1.

5 was factored in all the calculations. 2.2 Inexpensive The device must be produced within a strict budget by sourcing for cheap local materials according to the bill of quantities. 2.3 Design Evolution The first concept generation was accomplished by creating an itemization of the design into the following functional and movable elements; pipes, chains and the support system. The team had a brainstorming session, whereby it was agreed that only the top rated materials will be considered for each functional component in order to develop an alpha design.

The criteria for selecting components were based on the cost of the material and its manufacturability. 3.0 Engineering Analysis The engineering fields that are applicable to the design process are statics, dynamics and materials. The appropriate basics and ideas from statics and dynamics are Newton’s law, bending moments, torque and friction. For materials mostly on the pipes and chains, the applicable properties are: fracture toughness, Young’s modulus, corrosion, yield strength and ultimate tensile strength.

Newton’s Second law, was necessary to calculate the forces that will be applied to the support while the chain moves up and down while lifting an object. The bending moments, of the motor was calculated to ensure the mechanism does not degrade rapidly and maintain the factor of safety. Force = mass * acceleration Moment/Torque = force * moment arm Friction was also considered for the design process because it affects the torques required to lift loads vertically. The joints will need minimal lubrication to meet joint wear/lifetime requirements.

The engineering basics mentioned above directly influenced material selection for the device. The following material properties were considered: fracture toughness, fatigue strength, yield strength, Young’s modulus, corrosion resistance and porosity. 4.0 Project Description Fig 1: Alpha Design 5.0 Bill of Materials Conclusion The aim of this project was to manufacture an electric powered device for lifting loads. The mechanism was fabricated and tested satisfactorily in lifting weights. The final design specifications were based on comparisons with current machinery employing the same application e.g. cranes and wrenches.

All of the engineering analysis was used to determine the material and the assembly of the device based on a factor of safety of 1.5.