Faculty: Engineering and Construction Course Title: HND Mechanical Engineering Instructions for the use of this cover sheet (1) A cover sheet is required for every activity including presentations (2) Please complete all sections below (3) Attach the cover sheet to your activity. Student name: Unit Name: Advanced Computer Aided Design Techniques Unit No: 69 Assessment No: 3 Title: Be able to generate a Solid model. Hand out date: 15/7/16 Hand in date: 16/9/16 LO Learning outcome (LO) AC In this assessment you will have the opportunity to present evidence that shows you are able to: Task no. Evidence (Page no) 2 3.1 Manipulate the user coordinate system (UCS) and world coordinate system (WCS) to suit construction requirements 1 3.2 create bounded geometry for extrusion and revolving 2 3.3 Produce sections from solid model 3 3.4 Demonstrate the use of construction techniques 4 3.5 Produce file containing mass, surface area, radius of gyration and centre of gravity 5 3.6 Produce a report detailing the uses of solid modelling in the manufacturing process. 6 Learner declaration I certify that the work submitted for this assignment is my own and research sources are fully acknowledged. Student signature: Date: Activity designed by Assessed by Name: Rod Kirk Name: Date: 11/07/16 Date: Internally Moderated by Internally Verified by Name: Name: Date: Date: In addition to the above PASS criteria, this assignment gives you the opportunity to submit evidence in order to achieve the following MERIT and DISTINCTION grades Grade Descriptor Indicative characteristic/s Contextualisation M1 Identify and apply strategies to find appropriate solutions Effective judgements have been made. An effective approach to study and research has been applied. Area X – The method of securing the threaded M20x 1.5 bar to the moving lower Jaw (Handle side) will need to be designed and developed so that the shaft can rotate independently of the jaw but remain attached. Note you may modify the existing component in the development of your design. M2 Select/design and apply appropriate methods/techniques Complex information/data has been synthesised and processed. Appropriate learning methods/techniques have been applied. Area Y – The method of securing the Handle to the Vice Base will need to be designed in order that the handle rotates and is fixed so that when turned the threaded M20x 1.5 bar moves horizontally in both directions. M3 Present and communicate appropriate findings The appropriate structure and approach has been used. The communication is appropriate for unfamiliar audiences and appropriate media have been used. D1 Use critical reflection to evaluate own work and justify valid conclusions Conclusions have been arrived at through synthesis of ideas and have been justified. The validity of results have been evaluated using defined criteria. For the Vice Base carry out an FEA analysis to identify areas of high stress and modify the base to reduce the maximum stress, also investigate material properties to select the most suitable Cast Iron as well as using and justifying a suitable factor of safety. D2 Take responsibility for managing and organising activities Activities have been planned. Autonomy has been demonstrated. D3 Demonstrate convergent/lateral/creative thinking Ideas have been generated and decisions taken. Problems have been solved. Creative thought has been applied. LO2 AC 3.1 Manipulate the User Coordinate System (UCS) and World co-ordinate system (WCS) to suit construction requirements. Task 1 - Design and model the upper Jaw for the vice, use multiple planes to allow the construction of features needed to produce the finished component. Include screen images of the planes used LO2 AC 3.2 Create bounded geometry for extrusion and revolving Task 2 - Detail which elements you have constructed by using both Extruded bounded geometry and Revolved bounded geometry, include screen shots of the bounded geometry in your assignment submission. LO2 AC 3.3 Produce sections from solid model. Task 3 - From the solid model assembly produce two sectioned elevations (A) End elevation of the Vice base only. (B) Stepped End elevation of the completed assembly. LO2 AC 3.4 Demonstrate the use of construction techniques Task 4 - Take screen images of the range of construction techniques used to generate a range of components and explain the process that has been used. LO2 AC 3.5 Produce file containing mass, surface area, radius of gyration and center of gravity Task 5 – (A) From the analysis evaluate the following parameters – Mass of the vice base, overall surface area of the vice base, radius of gyration and C.O.G. Discuss the purpose of these values and how are they are of benefit to engineers LO2 AC 3.6 Task 6 – Produce a report detailing the uses of solid modelling in the manufacturing process. Include in your analysis aspects such as, visualization techniques, Assembly methods, Design for manufacture, Finite Element Analysis. Computational Fluid Dynamics and Computer Aided. Manufacture. Sizes for individual bench Vice solid model   Labelled Assembly drawing Vice Base Assembly showing hidden detail Bench Vice – Sizes. Front Elevation, End Elevation and Plan. Drawn in Third Angle Projection LO2 AC 3.3 Task 3 A End elevation section D-D of the Vice base only LO2 AC 3.3 Task 3 B Stepped End Elevation E-E of the Vice Assembly ITEM Number 8 Fixed Jaw (Handle Side) ITEM Number 8 Upper Jaw Merit Criteria evidence Area X – The method of securing the threaded M20x 1.5 bar to the moving lower Jaw (Handle side) will need to be designed and developed so that the shaft can rotate independently of the jaw but remain attached. Note you may modify the existing component in the development of your design. Area Y – The method of securing the Handle to the Vice Base will need to be designed in order that the handle rotates and is fixed so that when turned the threaded M20x 1.5 bar moves horizontally in both directions. Note you may modify the existing component in the development of your design. Distinction Criteria evidence For the Vice Base carry out an FEA analysis to identify areas of high stress and modify the base to reduce the maximum stress, also investigate material properties to select the most suitable Cast Iron as well as using and justifying a suitable factor of safety The initial force to be applied is 3250 N on each face, from this redesign the vice base to reduce the von Mises stress by 10%. Justify your decisions and detail the reductions made. Achievement Summary Qualification HND in Mechanical Engineering Assessor name Rod Kirk Unit Number and title Unit 69 – Advanced Computer-aided design Techniques Student name Criteria Reference To achieve the criteria the evidence must show that the student is able to: Achieved? (tick) LO 2 3.1 Manipulate the user coordinate system (UCS) and world coordinate system (WCS) to suit construction requirements. 3.2 Create bounded geometry for extrusion and revolving. 3.3 Produce sections from solid model. 3.4 Demonstrate the use of construction techniques. 3.5 Produce file containing mass, surface area, radius of gyration and centre of gravity. 3.6 Produce a report detailing the uses of solid modelling in the manufacturing process. Higher Grade achievements (where applicable) Grade descriptor Achieved? (tick) Grade descriptor Achieved? (tick) M1: Identify and apply strategies to find appropriate solutions D1: Use critical reflection to evaluate own work and justify valid conclusions M2: Select / design and apply appropriate methods / techniques D2: Take responsibility for managing and organising activities M3: Present and communicate appropriate findings D3: Demonstrate convergent/lateral/creative thinking Assignment Feedback Formative Feedback: Assessor to Student Action Plan Summative feedback Feedback: Student to Assessor Assessor signature Date Student signature Date