Please answer and show working and label each part a) Define what is meant by selective assembly" and briefly explain whyit is used and give one example.b)In setting up a precision machining operation, the following lengthmeasurements were made on a sample batch of parts, manufactured toa length of 10.000 mm +/- 0010 mm,LENGTH (mm)QUANTITY9.99410.0019,9979.99610.0032.156.7.17In order to proceed with high volume production a quality checkis made,Determine.(0)The mean length (round your answer to 3 decimal places).The standard deviation of the lengths. (Use N= 50)()Is the machine "capable"? Use 3 different measures in youranswer.(iv)be expected,(Use Statistical Table)The reject level and confirm if less than 0.1 % rejects can0.000.000.020.03 0040.050.060.070.080.090.48800.4483CT47210.45020420/04430.46810.46410.3783037450.33720.10150.38590.3483T03:070.36320.3669U上EUO0.33460.30850.274310.24100.354003156050.30500.2:09028890.2870254010291)0.258越M6T024830.10.18940.22970.203301977021480.15010.13350.9490.16850.1446TB150.13571B140.14010.12100.10950.10030.0100:49006180.08830.0908/0.06080.05480.046D.0780,0:04160.0516TOE帝T04951.80.0350DIOE地拉0.008146UTOLESI0.010724100060.0019000135000097000116OTOO09013.16.30000470.000430.00000,000W0

(a) Selective assembly Process capability = 4 ( desired tolerance ) For example 0.4 = 4 * 0.1…

Answered: a) Define what is meant by "selective…

Engineering

Mechanical Engineering

a) Define what is meant by "selective assembly" and briefly explain why it is used and give one example.

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

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 blind-hole in the shape of the letter G in a 50 mm (2.0 in) cube of steel. The overall size of the "G" is 25 by 19 mm (1.0 by 0.75 in), the depth of the hole is 3.8 mm (0.15 in), and its width is 3 mm (1/8 in).
In an orthogonal machining with a tool of 9 degree orthogonal rake angle, the uncut chip thickness is 0.2mm. The chip thickness fluctuates between 0.25 mm and 0.4 mm. The ratio of the maximum shear angle to the minimum shear angle during machining is
Find the machining time, in seconds, and the rate of material removing in mmA3;sec for a turning operation having the following information: 1- Wp diameter is 80mm, 2- the length is 0.12m, 3- the cutting speed is 80m/min, 4- feed i50.5 mm/rev and 5- the depth of cut is 0.002m.
Orthogonal cutting, in a machining process,The attacking team sawdust (α) is 10 ̊. operationchip (t0) 0.5 mm and machining beforeAfter the chip coating (tc) is 1,125 mm.Accordingly, in machining;a) Slip plane (ϕ),b) Shear strain (γ) calculator
A two-spindle drill cuts two holes at the same time, one 1/2 inch and one 3/4 inch. The workpiece is 1.0 inches thick. Both drills have point angles of 118 degrees and the cutting speed for the material is 300 ft/min. The rotational speed of each drill can be set individually but the feed rate for both holes must be set to the same value because they move together into the material. The feed rate is set so that the total metal removal rate of both drills combined does not exceed 1.50 in3/min. Determine (a) maximum feed rate (in/min) that can be used, (b) individual feeds (in/rev) for each hole, and (c) cutting time for the operation.
(a) Explain the difference between roughing and finishing operations in machining.(b) What are the parameters of a machining operation that are included within the scope of cuttingconditions?(c) What is the difference between threading and tapping?(d) A cylindrical workpiece is to be turned in a lathe. Determine the material removal rate if thecutting speed = 2.30 m/s, feed = 0.32 mm/rev, and depth of cut = 1.8 mm.(e) In a turning operation using high-speed steel tooling, the cutting speed = 110 m/min. The Taylortool life equation has parameters n = 0.140 and C = 150 (m/min) when the operation is conducteddry. When a coolant is used in the operation, the value of C is increased by 15%. Determine thepercent increase in tool life that will result if the cutting speed is maintained at 110 m/min.
In an orthogonal cutting test with a bar of 75 mm diameter is reduced to 73 mm by using a HSS tool with arake angle  = 10o, following observations were made: length of the chip, lc = 69.44 mm, cutting ratio r =0.3, the horizontal component of the cutting force, FH = 1450 N, and the vertical component of the cuttingforce, FV = 850 N. The various parameters recorded in this cutting operation are: depth of cut, d = 2 mm;feed rate, f = 0.3 mm/rev, cutting speed, V = 60 m/min. Using Merchant’s theory calculate the following:1) Friction force along rake face2) Normal force acting on rake face3) Shear force along the shear plane4) Normal force acting on shear plane5) The percentage error in shear angle predicted by Merchant’s theory6) Shear velocity7) Chip velocity8) Total work done9) The shear work proportion out of the total work done10) The friction work proportion out of the total work done
The following data were obtained in a study taken on a horizontal milling machine:Parts produced per cycle: 8.Average measured cycle time: 8.36 minutes.Average measured stress time per cycle: 4.62 minutes.Average fast traverse time: 0.08 minutes.Average cutting time with electrical power: 3.66 minutes.Performance rating: 115%.Clearance (machine time): 10%.Slack (effort time): 15%.The operator works on the task 8 hours a day and produces 380 parts. How many standard hours does the operator work? What is the operator's efficiency for the 8-hour day?
1.) On a lathe, a cylindrical work piece of 100mm diameter is being turned. The RPM is 100. The cutting speed is _________?(m/min)
22.40 Discuss the relative advantages and limitations of neardry machining. Consider all relevant technical and economic aspects.
2.15 What are the advantages to dry machining?