BETC 机械加工工艺课业

Pingdingshan Industrial College ofTechnologyBTEC HND in Manufacturing Process/ Mechanical engineeringUnit27 Manufacturing ProcessAssignmentName of StudentUnit Title Unit27 Manufacturing ProcessAssignment Title Conventional & unconventional manufacturing processes Assignment No Assignment 1Name of TutorName of Internal VerifierSubmission Deadline Nov 17, 2010.Outcomes and Assessment CriteriaOutcome Assessment criteria Feedback Tutor’sdecision Internal Verification1Select suitable conventional machining processes and techniques for generating geometrical forms for a given component specification identify and selectsuitable data andprocesses for componentmanufacture using arange of conventionalmachining techniques1aidentify and describetooling requirements andwork-holding techniques1b3 Select suitable non-conventional machining techniques for a given component specification identify and selectsuitable data andprocesses for componentmanufacture using a non-conventional machiningprocess3aidentify and describe thetooling and ancillaryequipment required tomanufacture thecomponentequipmentrequired to manufacturethe component3b Merit Grade CriteriaMerit Descriptors IndicativeCharacteristicsFeedback Tutor’sdecisionInternalVerificationM1 Identify and apply strategies to find appropriate solutions The effective machingprocess have been made.M1M2 Select, design and apply appropriate methods and techniques The range of methods andtechniques have beenapplied.The design of machingprocess has been justified.M2M3 Present and communicate appropriate findings The decisions are based on understanding of the relevissues.The English used isaccuracy and fluentenough.M3Distinction Grade CriteriaDistinction Descriptors IndicativeCharacteristicsFeedback Tutor’sdecisionInternalVerificationD1 Use critical reflection to evaluate own work and justify valid conclusions The information gatheredis checked for accuracyand validity. Andthe information referencedis so complete .D1D2 Take responsibility for managing and organising activities Substantial activities,projects or investigationshave beenplanned, managed andorganized. The importanceof interdependencehas been recognized andachieved.D2D3 Demonstrate creative thinking The answers are presentedin a very standard formand show anindividual approch in thework using fluenttechnical language.And the analysis should beincluded your ownopinions.D3Internal verification of assignment brief (final agreed version) IV name DateI confirm that this is all my own work StudentsignatureProfessor’s summative feedback and commentsSignature DateStudent’s comments on professor’s feedbackSignature DateManufacturing is an old topic, spanning the entire history of modern man.* There are some recurring themes in mans manufacturing techniques.- cutting- grinding- drilling* The basic manufacturing processes generally work one material mechanically with another material.T ask 1: As is shown below, formulate the maching process and describeNo. Process Name Process contentEquipment 1 Cutting Steel 45 ¢ 60mm × 265mm Saw2 CarsJaw self centering chuck rough cylindrical workpiece flat carend see the center hole drilled to withstand the center hole withthe tailstock centerLatheC6140 U-turn, three-jaw self-centering chuck ¢ 48mm at (¢ 44mmOD) vehicle to another end, to ensure total length of 250 mmcenter hole drilling to withstand the center hole with thetailstock centerRough ¢ 52mm ¢ 54mm OD toRough ¢ 35mm OD to ¢ 37mm, length A3mmRough ¢ 30mm OD to ¢ 32mm, 36mm longRough M24mm cylindrical to ¢ 26mm, 16mm longTest3 Heat Quenching 220 ~ 240HBS4 Clamp Research at both ends of the center hole repair Lathe5 CarsDouble top half finish turning ¢ 46mm clamping cylindricalto ¢ 46.5mm, length 120mm semi-finish turning ¢ 35mm ODto ¢ 35.5mm, 68mm long cylindrical to semi-finish turningM24mm ¢ 24 - 0.1 - 0.2 mm, length 16mm semi- FinishTurning 2 ~ 3mm × 0.5mm ring recessed finish turning 3mm ×l.5mm ring groove back outer corner of 1mm × 45 °, 3 处Lathe U-turn, double top clamping cylindrical semi-finish turning ¢35mm to ¢ 35.5mm, length A5mm cylindrical semi-finishturning ¢ 30mm to 38mm semi-intensive ¢ 35.5mm long cylindrical M24mm to ¢ 24 - 0.1 - 0.2 mm mm, length 18mmsemi-finish turning ¢ 44mm to the length, 4mm car 2 ~ 3 mm ×0.5mm ring groove car 3mm × l.5mm ring groove back outercorner of lmm × 45 °, 4 Department for6 Cars Double top clamping cars M24mm × l.5mm ~ 6g to the size ofa U-turn, testingLathe7 Clamp Program and a two washers with keyway groove machiningline8 Milling With a V-shaped clamping vise, keyway milling by line to find is 12 mm × 36mm, to ensure that size 41 ~ 41.25mmKeyway milling 8mm × l6mm, to ensure that size 26 ~26.25mm slot milling washers 6mm × l6mm, 20.5mm todimensional inspection to ensureMilling9 Clamp Research at both ends of the center hole repair10 MillCylindrical grinding to the size of ¢ 35 ± 0.008mmU-turn, double-top fixture Cylindrical grinding mill axis PCylindricalMoldprocessing card Mold Name Gasket Materials 45 steel Part Name DieQuantity 1 Process Process Name Process contentProcess equipment 1CuttingCut off by size Φ 120mmX195mmSaw2ForgingTempered 170mmX130mmX29mmAir Hammer3 Annealing4 Planing (ormilling) Dig into (or milled) 170mmX130mmX24mm,to ensure their mutual perpendicularity 0.15mmPlaner or millingmachine5 Grinding Ground plane and a pair of two right anglesides, to ensure their mutual perpendicularity0.22mm Surface Grinder6 Crossed To mark surfaces as the base, draw the centerline, the centerline hole, slot milling line, red eyes of the hole center7 Fitter ①the rest of the holes drilled②Center for Φ 8mm hole8 Milling crossed milling9 HeattreatmentQuenching heat treatment process by 58 ~60HRCSalt bath furnaceor vacuumfurnace10 Wire Wire type hole Cutting Machine11 Grind ①grinding type of hole ②grinding positioningpin hole Fitter Taiwan12 Two planegrindingSurface Grinder Surface GrinderGeneral Notes to students:·Word process the report. Use 12 point Times New Roman script. The general expectation of layout is that each written assignments should be typed or computer-printed with A4 size sheets. Leave adequate space for 1.5 spaced and 3cm margins to allow space for marker's comments. Use a butterfly or treasury tag to keep the pages of your work together. Include Arabic page numbers.· A word count must be included in all assessed work, failure to do so will result in a penalty of 5% points. A penalty of 1% point will be applied for each 50 words above the specified limit. For example, if the limit is 1000 words, a penalty of 1% is applied for essay of length 1001-1050, 2% for an essay of length 1051-1100 and so on.·Complete the cover sheet and sign the statement of authenticity.·Use the Harvard referencing system. Take great care that if you use other people’s work or ideas in your assignment, you properly reference them in your text and any bibliography. (If you are caught plagiarising, you could have your grade reduced to zero, or at worst, you could be excluded from the course)·Check carefully the submission date and the instructions given with the assignment. Late assignments will not be accepted. If you are unable to hand in your assignment on time and have valid reasons such as illness, you may apply (in writing) for an extension.Added Notes:·The deadline for submitting assignment is 11/17/2010, 4 PM at Teaching Office 3420. Return date for marked work: 11/28/2010·Limit the body of the assessment to around 1500 words.。