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26) Based on the expected operational parameters given during the lathe operation of a cylindrical part...
02: A bar of 60 mm diameter and length of 3 meter is used to produce 500 pieces on a center lathe having the follow...
02: A bar of 60 mm diameter and length of 3 meter is used to produce 500 pieces on a center lathe having the following characteristics: . Maximum rotational speed .Minimum rotational speed .Number of speeds Lathe overall efficiency The turning process is performed at 40 m/min cutting velocity. 0.5 mm/rev longitudinal feed, 0.25 mm/rev transverse feed and 2 mm depth of cut REQUIRED 1. Calculate the TWELVE rotational speeds in rpm. 2. What rotational speed would you choose? 3....
A lathe turning operation has the following parameters: Depth of cut = 2 mm Feed per...
A lathe turning operation has the following parameters: Depth of cut = 2 mm Feed per revolution = 0.2 mm Cutting speed = 2.5 m/s Rake angle = 10 degree Fc/Ft = 1.5 Compute the following: (a) Cutting ratio (b) Shear Angle (c) Friction angle
Fundamentals of Mechanical Manufacturing Technology: Exercise5 Material-removal Rate The rate (MRR) in turning is the volume...
Fundamentals of Mechanical Manufacturing Technology: Exercise5 Material-removal Rate The rate (MRR) in turning is the volume of material removed per unit time, with the units of m/min De + D t also can be written as MRR = drv Do: Orignal diameter of workpiece,mm Dr: Final diameter of workpiece, mm Davg: Average diameter of workpiece, mm d: Depth of cut, mm f: Feed, mm/rev 4feed rate ofdf-㈢ )-mm, the distance traveled is l mn, the cutting time is Eq. (2)...
b) The end of a large tubular work part is faced on a vertical boring mill....
b) The end of a large tubular work part is faced on a vertical boring mill. The part outside diameter 38.0 in, inside diameter-200 in, and height 18.0 in. İf the facing operation is performed at a rotational speed to rev min. feed 0.015 in rev, and depth of cut = 0.180 in, determine (a) cutting time to complete the facing operation and (b) cutting speeds and metal removal rates at the beginning and end of the cut.
t) A lathe performs a tuning operation on a workpiece with diameter o in sh in...
t) A lathe performs a tuning operation on a workpiece with diameter o in sh in Shear of the work 40,000 Ib/in2 and tensile strength 60,000 Ib/in. Rake angle o ng speed 700 t/min, feed o.015 inv/rev, and depth 0090 in. The chip thickew peent s the tool 6 he ter t 0.025 in. Determine (a) the horsepower required in aterial under these conditions、( 40 the operation, (b) unit horsepower for this As
1115 LU ULJU III 18.3 A tapered surface is turned on an automatic lathe. The workpiece...
1115 LU ULJU III 18.3 A tapered surface is turned on an automatic lathe. The workpiece is 550 mm long with mini- mum and maximum diameters of 100 mm and 200 mm at opposite ends. Automatic controls on the lathe permit the surface speed to be maintained at a constant value of 200 m/min by adjusting the rotational speed as a function of workpiece diameter. Feed = 0.25 mm/rev, and depth of cut = 3.0 mm. The rough geom- etry...
During a turning operation on a lathe using a grooved tool, the following forces were recorded:...
During a turning operation on a lathe using a grooved tool, the
following forces were recorded:
Group
1
2
3
4
5
6
Feed force, Fx (kN)
1.70
1.68
1.59
1.75
1.67
1.64
Radial force, Fy (kN)
1.32
1.39
1.44
1.42
1.45
1.38
Tangential force, Fz (kN)
2.18
2.37
2.38
2.32
2.29
2.33
The machine set-up includes a feed (s) of 0.24 mm/rev. and the
depth of cut (d) of 2.5 mm.
Tool rake angle ()
= - 6 deg....
A drilling operation is to be performed on a cast iron workpiece to form a through hole that wifl be subsequently tapped. The hole diameter is 0.40 in., and the material thickness is 1.25 in. The poi...
A drilling operation is to be performed on a cast iron workpiece to form a through hole that wifl be subsequently tapped. The hole diameter is 0.40 in., and the material thickness is 1.25 in. The point angle of the drill is 118°. Cutting conditions are as follows: cutting speed = 50 ft/min and feed 0.003 in/rev. How long will the drilling operation take? Assume process time begins when the drill bit makes initial contact with the work surface
A...
A 3.00 inch diameter workpiece that is 25 in long is to be turned down to...
A 3.00 inch diameter workpiece that is 25 in long is to be turned down to n2.384 inches. Process Specifications: a) Cutting Speed (V) = 300 ft/min, b) Feed (f) = 0.015 in/rev c) Depth of cut (d) = 0.044 in The bar will be held in a chuck and supported on the opposite end in a live center. With this work-holding setup, one end (15 inches) must be turned to diameter; then the bar must be reversed to turn...
• 23.44 Calculate the same quantities as in Example 23.1 for high-strength titanium alloy and at...
• 23.44 Calculate the same quantities as in Example 23.1 for high-strength titanium alloy and at N=700 rpm. Use units from Ex 23.1, specify units of each term. (20%) Format Tools Table Window Help 28th ed Chapter 23 - Saved to my Mac Mailings Review View Shape Format ut References ABC Astboeddte AaBb Abd A 2 Example 23.1 Material-removal Rate and Cutting Force in Turning Given: A 150-mm-long, 10-mm-diameter, 304 stainless-steel rod is being reduced in diameter to 8 mm...
02: A bar of 60 mm diameter and length of 3 meter is used to produce 500 pieces on a center lathe having the following characteristics: . Maximum rotational speed .Minimum rotational speed .Number of speeds Lathe overall efficiency The turning process is performed at 40 m/min cutting velocity. 0.5 mm/rev longitudinal feed, 0.25 mm/rev transverse feed and 2 mm depth of cut REQUIRED 1. Calculate the TWELVE rotational speeds in rpm. 2. What rotational speed would you choose? 3....
Fundamentals of Mechanical Manufacturing Technology: Exercise5 Material-removal Rate The rate (MRR) in turning is the volume of material removed per unit time, with the units of m/min De + D t also can be written as MRR = drv Do: Orignal diameter of workpiece,mm Dr: Final diameter of workpiece, mm Davg: Average diameter of workpiece, mm d: Depth of cut, mm f: Feed, mm/rev 4feed rate ofdf-㈢ )-mm, the distance traveled is l mn, the cutting time is Eq. (2)...
b) The end of a large tubular work part is faced on a vertical boring mill. The part outside diameter 38.0 in, inside diameter-200 in, and height 18.0 in. İf the facing operation is performed at a rotational speed to rev min. feed 0.015 in rev, and depth of cut = 0.180 in, determine (a) cutting time to complete the facing operation and (b) cutting speeds and metal removal rates at the beginning and end of the cut.
t) A lathe performs a tuning operation on a workpiece with diameter o in sh in Shear of the work 40,000 Ib/in2 and tensile strength 60,000 Ib/in. Rake angle o ng speed 700 t/min, feed o.015 inv/rev, and depth 0090 in. The chip thickew peent s the tool 6 he ter t 0.025 in. Determine (a) the horsepower required in aterial under these conditions、( 40 the operation, (b) unit horsepower for this As
1115 LU ULJU III 18.3 A tapered surface is turned on an automatic lathe. The workpiece is 550 mm long with mini- mum and maximum diameters of 100 mm and 200 mm at opposite ends. Automatic controls on the lathe permit the surface speed to be maintained at a constant value of 200 m/min by adjusting the rotational speed as a function of workpiece diameter. Feed = 0.25 mm/rev, and depth of cut = 3.0 mm. The rough geom- etry...
During a turning operation on a lathe using a grooved tool, the
following forces were recorded:
Group
1
2
3
4
5
6
Feed force, Fx (kN)
1.70
1.68
1.59
1.75
1.67
1.64
Radial force, Fy (kN)
1.32
1.39
1.44
1.42
1.45
1.38
Tangential force, Fz (kN)
2.18
2.37
2.38
2.32
2.29
2.33
The machine set-up includes a feed (s) of 0.24 mm/rev. and the
depth of cut (d) of 2.5 mm.
Tool rake angle ()
= - 6 deg....
A drilling operation is to be performed on a cast iron workpiece to form a through hole that wifl be subsequently tapped. The hole diameter is 0.40 in., and the material thickness is 1.25 in. The point angle of the drill is 118°. Cutting conditions are as follows: cutting speed = 50 ft/min and feed 0.003 in/rev. How long will the drilling operation take? Assume process time begins when the drill bit makes initial contact with the work surface
A...
• 23.44 Calculate the same quantities as in Example 23.1 for high-strength titanium alloy and at N=700 rpm. Use units from Ex 23.1, specify units of each term. (20%) Format Tools Table Window Help 28th ed Chapter 23 - Saved to my Mac Mailings Review View Shape Format ut References ABC Astboeddte AaBb Abd A 2 Example 23.1 Material-removal Rate and Cutting Force in Turning Given: A 150-mm-long, 10-mm-diameter, 304 stainless-steel rod is being reduced in diameter to 8 mm...
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