- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 1 (58.22 KiB) Viewed 89 times
- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 2 (14.36 KiB) Viewed 89 times
- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 3 (15.68 KiB) Viewed 89 times
- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 4 (45 KiB) Viewed 89 times
- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 5 (37.44 KiB) Viewed 89 times
- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 6 (32.14 KiB) Viewed 89 times
- Question 01 A Turning Operation Is Made With A Rake Angle Of 10 A Feed Of 0 010 In Rev And A Depth Of Cut 0 100 In T 7 (19.05 KiB) Viewed 89 times
QIYA turning operation is made with a tool tilted 20" from the normal, to the workpeice axis of rotation zending tool has a rake angle of 10, a width of 0.2 inch and a depth of cut - 0.100 in. The shear strength of the world material is known to be 50,000 1b/in", and the chip thickness ratio is measured after the cut to be 0.40 ut 400 pepindle speed. As a production engineer you have been asked to set a value for 1) Cutting Forces i Spindle power needed to perform the process and ii) estimate the power dissipated in shear FC
a a Q2: A drilling operation is to be performed with a 12.7 mm diameter twist drill in a steel workpiece hole is a blind hole at a depth of 60 mm and the point angle is 118°. The cutting speed is 25 m/min anu the feed is 0.30 mm/rev. Determine (a) the cutting time to complete the drilling operation, and (b) met removal rate during the operation, after the drill bit reaches full diameter. (10marks)
dup 4) Aling operation is to be performed with a 12.7 mm diameter twist drill in a steel work. The hole is a blind hole a depth of 60 and the point angles. The ing speed is 25 min and the food is 0.30 mm/rev. Asume that the le depthrow includes the tip of the tool Determine Mark) the coming time to complete the drilling operation D.17 Ni 25 440 e. VON 26 V. 25 fad 3 25 (b) metal removal rate during the operation after the drill bit reaches full diameter N HER-(**2.7"0-3X623.7 - 53737 - Seine 25x275 09 A peripheral milling operation is performed on the top surface of a rectangular workpart which is 400 m long by 60 wide. The linger, which is om in diameter and has five, overhange the width of the part on both sides. The uning speed is 90mmin, the chip food is 0.35 mooth, and the depth of cutis 5.0 mm. Determine (Maria) V. DN f Nu () the time to me pas cross the surface La N. VAD 9785 348 15.non Ic. od Dose 80x3 to 400 20 20 54815 (1) the material relate during the cut ARR 5x60x348 15 70 4445 mm 06) What are the two principal location on a cutting tool where tool wear occurs (Maria) holtip b) Tool life on the have resulted in the following data: (1) sta cutting speed of 375 fumin, the tool life was 5.5 (2) acting speed of 275 min, the tool life was 53 min. What is the expected tool life that corresponds to a cutting speed of 300 (4 Marks) 2.375 f/n Vid To 5.5 375 X 55.0 375 X 53.0 CON V. 275 flour 375x5.5 = 300 375x5.5", 275 X 53" 375 1. Clary edges (side) 2 calling edge Tel T. 63 95-03) 175 27 sun 1963)
D- 04 D 7.0 VA L JM 26. U16 1 298.5 RPM to.319 M t. 19. 16 secs when the MRRIT.DT203 636237879 Og med oc log The which we w es The 70, the Stara athews . tos DJ:20 VID UPA VE 7 .no - 20 -0.25 235.6 der 345125 348125 P2005 t. 206 miles chi the mai multe during the MRR wow • 60 * 5x 343.125 1644 37.5 36) What are the two principal location acting tool tool were Martes 1 Flank Face 2 Rake face Tool life tests on alathelverded in the following data (1) acting peod of 373, the tool life was 55 In: acting speed of 275 min, the tool life w 53 Wut is the expected to life that corresponds to ting speed of 30 (4 Maria) 1, 375H/min - 4. 5.5min 4.300 -? جو 3 م ج م / 275 مہارا ay Cc Vt & Vez * ) 300 x (ts) U3 (3) - V. (t. = 375 x(55) (13) 1.5785 = tz= 28. 06 min 5.1989 2 1301369 =n2.265
Q1: a lathe tool has to accommodate work between 25 and 300 mm in diameter. Six spindle speeds are required and the cutting speed is to be 25m/min. i) Find the six speeds a) if they are designed in geometrie progression b) if they are designed in preferred numbers. ii) For both cases find the work diameter appropriate for each spindle speed iii) Plot the relation between the work diameter and the spindle speed for both cases. (6 marks) Q2: During turning a mild steel component with an orthogonal tool a feed of 0.2 mm/rev was used at a curting speed of 80 m/min. the cutting force was 20 kg while the feed force was 8 kg. If the chip thickness was 0.4 mm and the back-rake angle of the cutting tool was 15º find the followings: Shear angle II. Work done in shear III. Horse power (HP) if the diameter is 40 mm (6 marks) Fv
ya 04: When the work material AISI H100 is machined with the cutting speed of 300 m/min the tool life for mm wear is 180 minutes. Find out the tool life for the same wear if the cutting is increased to the maximum allowable value of 600 nmin. Use Taylor's model with exponent 0.35. (3 Marks) T Thy. 300 x 180*10 110.25 54 To 6. 561 x 10 60o (9) ro SY T