Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Textbook Question
Chapter 6.4, Problem 9RQ
A workpiece requires 9 divisions. Calculate the correct direct indexing plate and number of notches to advance the plate. Plates with 24, 30, and 36 notches are available.
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Match each drawing to the term that describes it. Answers are used only once.
NOTE: I asked this question twice and received different answers from different tutors on this website. Please overlook the 2nd image provided (answers) and the text provided below (2nd set of answers) and double check for accuracy.
Drill spot - 3
Countersink - 6
Knurl - 7
Neck - 9
Spherical - 1
Keyway - 2
Spotface - 4
Blind hole - 10
Chamfer - 5
Counterbore - 8
1. If a machinist wanted to drill a % inch hole in a piece of machine steel using a high speed steel
drill. At what speed in revolutions per minute should he operate the drill press?
2. Find the revolutions per minute of an 8 mm drill if it is used to cut an aluminum workpiece using
a high carbon steel drill.
3. The rpm setting of the drill press is set to 600 rpm. What is the maximum diameter in inches of a
high speed drill if it is used to drill a tool steel material?
4. A drill press has the following rpm settings; 350, 600, 1100, & 1600. What rpm setting must be
used if a 15 mm high speed steel drill is used to cut brass workpiece?
5.
A machine operator drills a hole of a 3/8 inch diameter to a stainless steel using a carbon steel
drill. He sets the drill press rpm setting to 900 rpm. Is he operating at correct setting? If not,
then what must be the correct rpm setting considering that the machine has the following rpm
settings of 300, 600, 900, 1200, and 1800?
Write both NC program for the workpiece shown in following figure. Stock size is 150 x135 x 15 mm.
Do not share the answer on chegg. I need a different answer.
Chapter 6 Solutions
Precision Machining Technology
Ch. 6.1 - What part of the vertical milling machine allows...Ch. 6.1 - Briefly describe the direction of movement...Ch. 6.1 - When a table handle is turned clockwise the table...Ch. 6.1 - What distance does the saddle or table usually...Ch. 6.1 - Prob. 5RQCh. 6.1 - Briefly describe the function of the turret and...Ch. 6.1 - What is the name of the taper found in most modem...Ch. 6.1 - What part of the vertical mill can be raised and...Ch. 6.1 - How can power quill feed be automatically stopped...Ch. 6.1 - What is a benefit of using a DRO instead of...
Ch. 6.2 - Many of the cutters used in machining are made of...Ch. 6.2 - What is the major advantage of using...Ch. 6.2 - Prob. 3RQCh. 6.2 - What type of cutting tool would most likely be...Ch. 6.2 - Which type of cutter would most likely be used to...Ch. 6.2 - What workpiece factors might cause a four-flute...Ch. 6.2 - List three types of milling cutters that are used...Ch. 6.2 - Most manual vertical milling machine spindles are...Ch. 6.2 - A __________ is used to retain the toolholder in...Ch. 6.2 - What type of toolholder might he selected for...Ch. 6.2 - Sketch a corner-rounding endmill.Ch. 6.2 - What toolholding device uses two drive keys and a...Ch. 6.2 - Prob. 13RQCh. 6.2 - List the four basic pieces of a step clamp set: a....Ch. 6.2 - Prob. 15RQCh. 6.2 - Irregularly shaped work may be held in a custom...Ch. 6.3 - List five safety guidelines to observe when...Ch. 6.3 - Briefly describe the process of aligning a milling...Ch. 6.3 - What is chip load?Ch. 6.3 - Define IPM.Ch. 6.3 - Calculate spindle speed and feed for the two...Ch. 6.3 - Briefly describe the process of locating the...Ch. 6.3 - What are two benefits of boring over other...Ch. 6.3 - What are face milling and peripheral milling?Ch. 6.3 - When squaring a block on the vertical mill, what...Ch. 6.3 - What are the three basic methods used to mill...Ch. 6.3 - What must first be done before milling with either...Ch. 6.3 - Prob. 12RQCh. 6.3 - What diameter cutter should be used to create...Ch. 6.3 - When roughing a pocket, should you machine in a...Ch. 6.4 - What is a rotary axis?Ch. 6.4 - Define the term indexing.Ch. 6.4 - Describe the primary differences between the...Ch. 6.4 - Name three types of workpiece features that are...Ch. 6.4 - Briefly describe the two alignment steps that need...Ch. 6.4 - If the outside of a 6"-diameter disk is to be...Ch. 6.4 - What is the gear ratio found in the gear train of...Ch. 6.4 - When using the indexing head, a __________ can be...Ch. 6.4 - A workpiece requires 9 divisions. Calculate the...Ch. 6.4 - In the formula 40D=T,what do T and D represent?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Please write legible and show the complete solution.arrow_forwardWrite both NC program for the workpiece shown in following figure. Stock size is 150 x135 x 15 mm.arrow_forward3. Calculate the following indexing requirements using Brown and Sharpe milling machines: (1) 27 divisions (2) 76 divisions (3)10° 20' The index plates available with the Brown and Sharpe milling machines are: Plate – I is having 15, 16, 17, 18, 19, 20 holes. Plate – II is having 21, 23, 27, 29, 31, 33 holes. Plate – III is having 37, 39, 41, 43, 47, 49 holes. -arrow_forward
- Can someone please help me to solve this and draw using autoCAD as well as show all work for part B.arrow_forwardWrite the NC part program for the part. Holes are threaded and requires two tools; T1 is a 0.5" HSS drill bit and T2 is a 0.5" tapping bit. The rest of the features are cut using a 0.75" HSS milling tool, T3. Feed rate and spindle speed are 10 ipm and 2000 rpm. The material is low- carbon steel. Part thickness is 0.5”. Use dotted lines two show the path of tools movements. Set up proper operation conditions as discussed in the class today.arrow_forwardGiven a gear of 24 teeth, 4 diametral pitch. The addendum equals 1 in. ÷ diametral pitch, the clearance is to be one eight of the addendum, and the backlash is to be 2 per cent of the circular pitch. Calculate the following, giving results to three decimal places: a. the pitch diameter b. the diameter of the blank gear before cutting the teeth (addendum diameter) c. the depth of the teeth d. the backlash e. the width of the tooth f. the width of the spacearrow_forward
- this sheet metal selection has five sets of drilled holesarrow_forwardis this drawing metric or inch?arrow_forward-How many holes require drilling? -What is the center to center distance of the 6mm tapped holes? -What tap drill is used for holes marked Z? -How many surfaces are machine finished? -What are the dimensions of the face marked F & C? -What are the dimensions have symbols A, E &, B -In what dihedral angle is the drawing made? -What is the max and min dimensions of D -What is the tolerance of measurement D?arrow_forward
- please solve in handwritten format include fbd.arrow_forwardA lathe cross slide uses a diameter-reading micrometer collar. If the cross slide is advanced by 0.150". what depth of cut would result?arrow_forwardWhat are the various operations performed on lathe? Explain atleast 10 operations with neat sketcharrow_forward
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