In an orthogonal cutting test on mild steel, the following data were obtained Cutting speed Depth of cut Tool rake angle 40 m/min 0.3 mm + 5° Chip thickness Cutting force 1.5 mm 900 N Thrust force 450 N Using Merchant's analysis, the friction angle during the machining will be

In an orthogonal cutting test on mild steel, the following data were obtained Cutting speed Depth of cut Tool rake angle 40 m/min 0.3 mm + 5° Chip thickness Cutting force 1.5 mm 900 N Thrust force 450 N Using Merchant's analysis, the friction angle during the machining will be

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

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The following data was obtained from an orthogonal cutting test. Rake angle = 20° Depth of cut = 6 mm Feed rate = 0.25 mm/rev Cutting speed = 0.6 m/s Chip length before cutting = 29.4 mm Vertical cutting force = 1050 N Horizontal cutting force = 630 N Chip length after cutting = 12.9 mm Using Merchant's analysis, calculate (a) Magnitude of resultant force, (b) shear plane angle, (c) friction force and friction angle, and (d) various energies consumed.
Q2:- Tool life tests in turning yield the following data: (1) v = 100 m/min, T = 10 min; (2) v = 75 m/min, T = 30 min. (a) Determine the n and C values in the Taylor tool life equation. Based on your equation, compute (b) the tool life for a speed of 90 m/min, and (c) the speed corresponding to a tool life of 20 min Q3:- In an orthogonal cutting operation, the tool has a rake angle = 15°. The chip thickness before the cut = 0.30 mm and the cut yields a deformed chip thickness = 0.65s mm. Calculate (a) the shear plane angle and (b) the shear strain for the operation. Suppose the rake angle were changed to a= 0°. Assuming that the friction angle remains the same, determine (a) the shear plane angle, (b) the chip thickness, and (c) the shear strain for the operation.
We have a rectangular piece. We wish to manufacture a parallel slot along thepiece in a vertical milling machine and 50 cm from the edge. The width of the slot is 40 mm. TheDepth of the slot is 25 mm. For this, several rough cutting steps and aFine cut with a depth of 0.20 mm. The depth for each of the steps ofrough cut is limited to 1.75 mmAditional information:What is the number of blades used for the rough cutting steps?What is the number of blades used for the fine cutting step?
2) In an orthogonal cutting operation, the cutting tool has a rake angle = 20°. The chip thickness before the cut = 0.25 mm. If the cutting force and thrust force are measured during an orthogonal cutting operation with values, Fc = 1450 N and Ft = 1990 N. The width of the orthogonal cutting operation w = 2.5 mm. the friction angle B is = 79.91° Determine: The Shear Angle The Shear Strain The Shear Strength of the material The Force of Friction
• Part A Draw the shear diagram for the baam. Folow the sign convention. Fig.m 1) Clok on "add Vertioal line off to add dicoontinulty linec. Then ollok on "add cagment" button to add funotions between the lines. Note 1- You chould not draw an "extra" vertical line at the looation of appled moment. Note 2- Be cure to Indicate the oorreot types of the funotione between the linec, eg. fin your ancwer the type of a funotion Ie "Ilnsar inoressing ciope" for the funotion that actually has linear deoreacing clopa, the ancwer wll be graded as Incorrect Uce the button "ohange cagment" f nsoeccary. 0000 15 kN 10 kN/m 20 kN m 2m 1m No cloments selected v N) 30 20 Im) 20 Add discontinulty ines and seloct segments to add to the canvas Submit dg Aer • Part B Draw the momant diagram for the baam. Follow the sign convention. Cliok on "add vertioal line off to add dicoontinulty linec. Then ollok on "add cagment" button to add funotions between the lines. Note 1- The ourve you chooce from the drop-down…
2. The following data was obtained from an orthogonal cutting test: Rake angle = 20° Cutting speed = 100 m/min Chip length before cutting = 29.4 mm Chip length after cutting = 12.9 mm Vertical cutting force 1050 N Horizontal cutting force = 630 N Using Merchant's analysis, calculate (a) resultant force (c) friction force and friction angle (b) shear plane angle (d) total work done
1) Orthogonal Cutting: In an orthogonal cutting test on mild steel, the following results are obtained: to = 0.3 mm tc = 0.7 mm w = 3 mm Fc = 1000 N FN = 500 N (Fp in your book) Tool rake y = 0 Calculate: a. Mean angle of friction ß on tool face b. Mean shear stress Ts
A mild steel specimen of Initial diameter of 51.5 mm is turned to final diameter of 48 mm for an initial length of 151 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.1 mm/rev & Depth of cut is 0.5 mm (ii) During machining the tool's approach length is 7 mm, over run length is 2mm (iii) Total time required to complete the turning operation is 48.8 minutes (a) Find number of passes to finish the entire turning operation (b) The actual length of the turning operation in mm ( (c)The time required to complete one single turning operation in minutes (d) Spindle speed in rpm
Q1. The part shown below will be turned in two machining steps. In the first step a length of (50 + 50) = 100 mm will be reduced from Ø100 mm to Ø80 mm and in the second step a length of 50 mm will be reduced from Ø80 mm to Ø60 mm. Calculate the required total machining time T with the following cutting conditions: Cutting speed V=80 m/min, Feed is f=0.8 mm/rev, Depth of cut 3 mm per pass. Ø100 Ø80 Ø60 50 50
A mild steel specimen of Initial diameter of 53.5 mm is turned to final diameter of 47 mm for an initial length of 154 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm (ii) During machining the tool's approach length is 5 mm, over run length is 2mm (iii) Total time required to complete the turning operation is 59.6 minutes
A mild steel specimen of Initial diameter of 53.5 mm is turned to final diameter of 47 mm for an initial length of 154 mm on a lathe machine. Using the given data find the following. (i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm (ii) During machining the tool's approach length is 5 mm, over run length is 2mm (iii) Total time required to complete the turning operation is 59.6 minutes (a) Find number of passes to finish the entire turning operation ( (b) The actual length of the turning operation in mm ('
1. Most common instrument used in the mechanical gages is the dial indicator, which of the following applications cannot be measured by the dial indicator? (a) All of them (b) Perpendicularity (c) Runout (d) Circularity (e) Roughness 2. The main mechanism for the flank wear on the single point cutting tool is: (a) Oxidation wear (b) Adhesion wear (c) None of them (d) Diffusion wear (e) Plastic deformation 3. Higher cutting speeds and temperatures are the main mechanism of the following tool wear mechanism: (a) Diffusion wear (b) Abrasion wear (c) None of them (d) Adhesion wear (e) Plastic Deformation