Question

It is desired to drill a 350 mm diameter hole to a certain depth in a...

It is desired to drill a 350 mm diameter hole to a certain depth in a workpiece with a diameter of 500 mm and a diameter of 1000 mm by deep drilling. It takes 4.5 minutes to perform the drilling process by spraying high pressure liquid into the drilling point. Current spindle speed = 4000 rpm and feed = 0.004 cm / rev. In order to increase the surface quality in the hole, it was decided to reduce the feed by 25% and increase the speed by 20%. How long does it take to perform the process in new cutting conditions?

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Deep hole drilling is a family of drilling processes used when the ratio of hole depth...
Deep hole drilling is a family of drilling processes used when the ratio of hole depth to hole diameter exceeds 10. Successful deep hole drilling depends on the satisfactory discharge of the drill chip. An experiment was conducted to investigate the performance of deep hole drilling when chip congestion exists. The length (in mm) of 50 drill chi8ps resulted in the following summary statistics: x = 81.2 mm, s = 50.2 mm . Conduct a test to determine whether the...
Suppose you wanted to drill a 1.5-in.-diameter hole through a piece of 1020 coldrolled steel that...
Suppose you wanted to drill a 1.5-in.-diameter hole through a piece of 1020 coldrolled steel that is 2 in. thick, using HSS twist drill. What values of feed and cutting speed will you specify? What is the metal removal rate? What is the cutting time?
A conical surface will open on an automatic lathe. The workpiece is 1000 mm long and...
A conical surface will open on an automatic lathe. The workpiece is 1000 mm long and the minimum and maximum diameter at opposite ends is 150 mm and 250 mm. Automatic controls on the lathe set the rotation speed as a function of the workpiece diameter, allowing the surface speed to be kept at a constant value of 200 m / min. Feed 0.5 mm / revolution and cutting depth 4.0 mm. The rough geometry of the part has been...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT