Please use formulas attached (b)During a certain machining experiment at the UCSI workshop, it is observedthat temperature at the tool workpiece interface is 1200 °C at a cutting speed of300 mm/min with a feed rate of 0.002 mm/rev.(1)Analyse how the temperature will be affected if the cutting speed isincreased by 100 %.(ii)Detemine the cutting speed necessary to achieve a maximum cuttingtemperature of 900 °C. Formula SheetA = 2RD14 + DLF, = F. coso - F, singy= tan(6- a) - cot øV= TD*L/4tan ¢ = r cos a/[1-r sin a]r= (4. - ANA,Trs = C.(VIA)?.d= t, - tfN= waD, F. = F. sino + F.cosI= VIRRRAR = vfd27 DADLI=7 duax = µ Rnc = vwCA = r Dh +TmRMR = VwwdI = VDd HP.V = nD*/433,000Min no of passes = (t, - ta/duaxø = 45+.a BF,S =tow,Vo = tW¡V1 =t,w2V2A,T= CIDFA, =sinøHm = UmV, V= TD*d/4H=FRtT= (C/v)'nU/nv = TDNA = 1 D² +2r D² /4Tm = V/MRRA, – Ad = D, - DA.={(D – 0.9382 p)²A.o = Yje = 7, InAf-Y,(1+%3Dtanga= InF = Aja4 = A,V; (1+Je InA = T(R1 + R2){ + (R1 - R),05tan a.Ahị +V*/2g = b; +V2gN= F. cosa - F, sina=(» - )0.9743s = (V - V)/VrA = a(R, + R;){h* + (R; – R3);"M.R.R = wdv%3D-7,-D. - D,2 sin otan ¢ = r cos a[1-r sin )t,w,Vo = TWNEV=A.d:(1 + s)v, = Vfs = (V - V,)/v,1+nE = InrxA,A.In-AfF = V/NnD$ = 0.88 + 0.12-Af= Y; In rxG= Y/(1 + p/tan a)e(n A/4)F = F. sina + F, cosaF.=F,cos (B - a)/cos(o +B - a)F.=F,sin (B- a)/cos(o - B-a)

(i). In a metal cutting process, Maximum heat is carried out by chip then tool and lastly by the…

(b) During a certain machining experiment at the UCSI workshop, it is observed that temperature at the tool workpiece interface is 1200 °C at a cutting speed of 300 mm/min with a feed rate of 0.002 mm/rev. (1) Analyse how the temperature will be affected if the cutting speed is increased by 100 %. (ii) Determine the cutting speed necessary to achieve a maximum cutting temperature of 900 °C."

(b) During a certain machining experiment at the UCSI workshop, it is observed that temperature at the tool workpiece interface is 1200 °C at a cutting speed of 300 mm/min with a feed rate of 0.002 mm/rev. (1) Analyse how the temperature will be affected if the cutting speed is increased by 100 %. (ii) Determine the cutting speed necessary to achieve a maximum cutting temperature of 900 °C."

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

a) It has been stated that it is generally undesirable to allow temperatures to riseexcessively in machining operations. Explain why?b) List out the cutting parameters which is influenced the rises of cuttingtemperature during turning process.c) Evaluate the relationship of these cutting parameters to the cutting temperaturewith graph.d) Propose the solution of how to reduce the temperature during the cuttingprocess.
Discuss the effects of cutting speed, feed rate, and depth of cut on the tool wear rate during a turning operation. How does each parameter influence the surface finish of the workpiece? Provide a detailed explanation based on the principles of metal cutting mechanics.
In a turning operation, cutting speed =200 m/min; feed = 0.25mm mm/rev, and depth of cut = 4.00mm Thermal diffusivity of the work material = 20m mm^2/s and volumetric specific heat =3.5(10^ -3 )J/mm^ 3 -C If the temperature increase above ambient temperature (20degreesC) is the angle measured by a tool-chip thermocouple to be 700degreesC, determine the specific energy for the work material in this operation.
Draw the forces and angles involved in the cutting process and calculate shear angle (0), friction coefficient and tangential force if ,cutting force = 80 kN, resultant of forces =100kN, friction force=75kN, rake angle =20° undeformed chip thickness = 0.65mm and deformed chip thickness = 0.72mm
A flat milling operation will be carried out with a horizontal milling machine, in a piece of 250 mm in length and 50 mm in width, using a felicoidal bur with a diameter of 75 mm, with 10 teeth. If the feed per tooth is 0.2mm, and the cutting speed is 0.75 m / s, how would you determine the speed of metal removal to remove 6 mm from the surface of this piece?
What is difference in turning and boring processes? Explain the difference if any in the equations for cutting speed, material removal rate, and machining time
A slab milling operation is performed on the top surface of a tool-steel workpiece 450 mm long by 7.5 cm wide. The helical milling cutter, which has an 80 mm diameter and seven teeth, is set up to overhang the width of the part on both sides. Cutting speed is 4000 mm/min, feed is 0.015 cm/tooth, and depth of cut = 0.60 cm. Determine (a) the actual machining time to make one pass across the surface and (b) the maximum metal removal rate during the cut. (c) If an additional approach distance of 0.05 m is added at the beginning of the pass, and an overtravel distance at the end of the pass equal to the cutter radius plus 0.0115 cm, what is the duration of the feed motion
In an orthogonal cutting test, the cutting force and thrust force were observed to be 1000N and 500 N respectively. If the rake angle of tool is zero, What is the coefficient of friction in chip-tool interface ?
A student is using a lathe with 80-hp and 80% efficiency to fabricate a copper alloy with Sy = 1200ksi If the width of cut is 0.30 inand the student set a rake angle of 0and a cutting speed of 200fl / min while she assumed a coefficient of friction to be 0.5. What is the maximum depth of cut the student can achieve?
A 78 mm thick plate is to be milled down to a thickness of 60 mm using an 80 mm face milling cutter. Calculate the processing time if the cutting depth is 6 mm, the feed/rev is 1.1 mm and the cutting speed is 15 m/min, and if the over run for a 620 mm long plate is 10 mm.
For the following application, identify one or more nontraditional machining processes that might be used, and present arguments to support your selection. Assume that either the part geometry or the work material (or both) preclude the use of conventional machining. The application is a matrix of 0.1 mm (0.004 in) diameter holes in a plate of 3.2 mm (0.125 in) thick hardened tool steel. The matrix is rectangular, 75 by 125 mm (3.0 by 5.0 in) with the separation between holes in each direction = 1.6 mm ( 0.0625 in).
For the following application, identify one or more nontraditional machining processes that might be used, and present arguments to support your selection. Assume that either the part geometry or the work material (or both) preclude the use of conventional machining. The application is a through-hole in the shape of the letter L in a 12.5 mm (0.5 in) thick plate of glass. The size of the "L" is 25 by 15 mm (1.0 by 0.6 in) and the width of the hole is 3 mm (1/8 in).