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When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)
Correct answer is '1.5'. Can you explain this answer?
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When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10...
Cutting time is given as
= feed per tooth, pre rev, = 0.01mm
Where l = length of job = 100 mm
x = Cutter approach = 
= 10 mm
= 10 mmy = Cutter over travel = 5 mm (say)
F = Table feet, mm/min
= feed per tooth, pre rev, = 0.01mmn = number of flutes = 8
N = Spindle rev./min
= 955 rev./min
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When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10...
Given data:
- Width of the slot (W) = 20 mm
- Length of the slot (L) = 10 cm = 100 mm
- Width of the rectangular plate (B) = 10 cm = 100 mm
- Length of the rectangular plate (L) = 20 cm = 200 mm
- Cutting speed (V) = 60 m/min
- Diameter of end drill (D) = 20 mm
- Number of flutes (N) = 8
- Feed (f) = 0.01 mm/flute
- Depth of cut (d) = 3 mm
Calculating the cutting time:
1. Calculate the circumference of the end drill:
- Circumference = π * D
- Circumference = 3.14 * 20 mm = 62.8 mm
2. Calculate the number of revolutions required to complete the slot:
- Number of revolutions = Length of the slot / Circumference of the end drill
- Number of revolutions = 100 mm / 62.8 mm = 1.59 revolutions
3. Calculate the feed rate per revolution:
- Feed rate per revolution = Number of flutes * Feed
- Feed rate per revolution = 8 * 0.01 mm/flute = 0.08 mm/revolution
4. Calculate the feed rate per minute:
- Feed rate per minute = Feed rate per revolution * Number of revolutions * 60 (min/hr)
- Feed rate per minute = 0.08 mm/revolution * 1.59 revolutions * 60 = 7.63 mm/min
5. Calculate the cutting time:
- Cutting time = Length of the slot / Feed rate per minute
- Cutting time = 100 mm / 7.63 mm/min ≈ 13.1 min
The cutting time for the operation to be completed in a single pass is approximately 13.1 minutes.
- Width of the slot (W) = 20 mm
- Length of the slot (L) = 10 cm = 100 mm
- Width of the rectangular plate (B) = 10 cm = 100 mm
- Length of the rectangular plate (L) = 20 cm = 200 mm
- Cutting speed (V) = 60 m/min
- Diameter of end drill (D) = 20 mm
- Number of flutes (N) = 8
- Feed (f) = 0.01 mm/flute
- Depth of cut (d) = 3 mm
Calculating the cutting time:
1. Calculate the circumference of the end drill:
- Circumference = π * D
- Circumference = 3.14 * 20 mm = 62.8 mm
2. Calculate the number of revolutions required to complete the slot:
- Number of revolutions = Length of the slot / Circumference of the end drill
- Number of revolutions = 100 mm / 62.8 mm = 1.59 revolutions
3. Calculate the feed rate per revolution:
- Feed rate per revolution = Number of flutes * Feed
- Feed rate per revolution = 8 * 0.01 mm/flute = 0.08 mm/revolution
4. Calculate the feed rate per minute:
- Feed rate per minute = Feed rate per revolution * Number of revolutions * 60 (min/hr)
- Feed rate per minute = 0.08 mm/revolution * 1.59 revolutions * 60 = 7.63 mm/min
5. Calculate the cutting time:
- Cutting time = Length of the slot / Feed rate per minute
- Cutting time = 100 mm / 7.63 mm/min ≈ 13.1 min
The cutting time for the operation to be completed in a single pass is approximately 13.1 minutes.
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When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer?
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When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer?.
When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When milling a slot 20 mm wide x 10 cm long in a rectangular plate 10 cm x 20 cm, the cutting speed = 60 m/min, diameter of end drill = 20 mm, number of flutes = 8, feed = 0.01 mm/flute and depth of cut = 3 mm. The cutting time for the operation to be completed in a single pass, is( Answer up to one decimal place)Correct answer is '1.5'. Can you explain this answer?.
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