Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN: 9781285444543
Author: Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher: Cengage Learning
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Textbook Question
Chapter 4.3, Problem 8RQ
Briefly contrast the speed and feed differences between drilling and reaming operations.
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For face milling a 2 x 3 inch surface using 1.5 in face mill tool. What is the time required to finished a cut when the depth of cut is 0.02 inch and the feed rate 0.05 inch/rev, RPM is 60.
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22
“Milling is an intermitted cutting operation”. Explain it.
Chapter 4 Solutions
Precision Machining Technology (MindTap Course List)
Ch. 4.1 - Upright drill presses are available in _______ and...Ch. 4.1 - List two general types of upright drill press...Ch. 4.1 - Explain how the size of an upright drill press is...Ch. 4.1 - Briefly describe the term sensitive drill press.Ch. 4.1 - Briefly describe a gang drill press and its...Ch. 4.1 - When would a radial-arm drill press most likely be...Ch. 4.1 - Briefly describe a micro drill press and its...Ch. 4.2 - What are the two main materials used to make...Ch. 4.2 - What two types of shanks are commonly found on...Ch. 4.2 - Name three functions of the flutes on a twist...
Ch. 4.2 - Name two types of flute styles for machine...Ch. 4.2 - Prob. 5RQCh. 4.2 - What is the major difference between counterboring...Ch. 4.2 - What must be used to secure a workpiece to an...Ch. 4.2 - What devices are used to elevate a workpiece to...Ch. 4.2 - If 50 parts measuring 1" I" 3" each needed a...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.3 - List five drill press safety guidelines.Ch. 4.3 - Briefly define the term cutting speed.Ch. 4.3 - What unit of measure is used to define cutting...Ch. 4.3 - What is feed, and how is feed stated for drill...Ch. 4.3 - Briefly describe two methods for locating hole...Ch. 4.3 - What is spotting and why is it performed?Ch. 4.3 - What is pecking, or peck drilling?Ch. 4.3 - Briefly contrast the speed and feed differences...Ch. 4.3 - What drill press component can be used to control...Ch. 4.3 - Calculate feed depth for a 90-degree countersink...Ch. 4.3 - Calculate feed depth for an 82-degree countersink...Ch. 4.3 - What benefit does tapping on the drill press offer...Ch. 4.3 - How many turns must a 1/4-20 tap be turned into a...Ch. 4.3 - Prob. 14RQ
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- What are two reasons boring may be selected to produce a hole instead of drilling and reaming?arrow_forwardWhy proper selection of cutting speed is important in machining? What is the main advantage of a turret lathe over to engine lathe? Give advantages of horizontal band saw over reciprocating power hacksaw. What is the difference in drilling operation using a drill press and lathe?arrow_forwardWhat is the function of a drill bushing? In cases where a drill bushing is not used, how is the jig treated to guide the drill?arrow_forward
- A drilling operation is to be performed with a 12.7 mm diameter twist drill in a steelwork part. The hole is a blind hole at a depth of 60 mm and the point angle is 118 ̊. The cutting speed is 25 m/min and the feed is 0.3 mm/rev. determine The cutting time to complete the drilling operation,arrow_forwardA twin-spindle drill simultaneously drills one ½-in hole and one ¾" through a 1" wide work piece. Both holes are twist drill with 118° point angles. cutting speed for material is 230 ft/min. The rotation speed of each spindle can be configured individually. The feed rate of both holes must be set to the same value, since both spindles go down at the same speed. The forward speed is set in such a way that the speed total metal removal does not exceed 1.50 in3 /min. Determine: a) the velocity maximum feedrate (in/min) that can be used, b) the individual feedrates (in/rev) that result in each hole and c) the time required to drill the holes.arrow_forwardWhat are the advantages of directional drilling?arrow_forward
- This is a machining process for producing internal straight cylindrical surface or profiles with process characteristics and tooling similar to those for turning operations.what is this machining process? (a) Boring (b)Drilling (c)Reaming (d) Millingarrow_forwardSketch and explain up milling operationarrow_forwardwhat are the disadvantages or restriction(limitation) for a automated drilling processarrow_forward
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