Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Chapter 8.6, Problem 4RQ
What is the purpose of a clearance plane in CNC programming and milling?
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Homework#8
Chapter 8 Solutions
Precision Machining Technology
Ch. 8.1 - What is an ATC?Ch. 8.1 - What is an MCU and what is its function?Ch. 8.1 - Briefly describe a ball screw and a linear guide.Ch. 8.1 - Explain the benefits of using the absolute...Ch. 8.1 - Explain the benefits of using the incremental...Ch. 8.1 - Which coordinate system uses an angle and a...Ch. 8.1 - What is the name for the type of motor used to...Ch. 8.1 - Supposing a programmer, using absolute mode,...Ch. 8.1 - What is a modal code?Ch. 8.1 - What is another name for the Cartesian coordinate...
Ch. 8.1 - List four G-codes and describe their functions. a....Ch. 8.1 - List four M-codes and describe their functions. a....Ch. 8.1 - What is the name of the character that ends each...Ch. 8.1 - Explain the purpose of the safe-start portion of a...Ch. 8.2 - Name the two primary machine axes on most CNC...Ch. 8.2 - Explain the difference between a turning center...Ch. 8.2 - List the three common types of live toolholders....Ch. 8.2 - Name three major collet styles used in...Ch. 8.2 - Name three types of workholding devices for...Ch. 8.2 - Name three major styles of turning machines....Ch. 8.2 - Explain why some workholding devices can be run at...Ch. 8.2 - Explain the difference between an OD grooving tool...Ch. 8.2 - When machining workpieces made from bar stock,...Ch. 8.2 - Describe how a sub-spindle can be used to increase...Ch. 8.2 - How does a Swiss turning center differ from a...Ch. 8.3 - Write the X- and Z-axis coordinates for the part...Ch. 8.3 - To perform a facing cut using a tool with a nose...Ch. 8.3 - Explain the difference between rigid tapping and...Ch. 8.3 - How must the feed rate for tapping using a...Ch. 8.3 - Describe what happens to a concave radius (fillet)...Ch. 8.3 - Describe what happens to an outside chamfer when...Ch. 8.3 - If a G1 code command is programmed partway through...Ch. 8.3 - List and briefly describe the two methods for...Ch. 8.3 - Explain in your own words the difference between...Ch. 8.3 - In your own words, describe a canned cycle.Ch. 8.3 - List two types of canned cycles besides roughing...Ch. 8.4 - What machine mode is generally used to manually...Ch. 8.4 - MDI stands for _________ ___________ ________.Ch. 8.4 - Which must be set first, the tool geometry offset...Ch. 8.4 - What is the process called where a program is sent...Ch. 8.4 - Explain the purpose of homing.Ch. 8.4 - What is the process called when a new program is...Ch. 8.4 - When setting up a machine to run a program that...Ch. 8.4 - What does MCS stand for?Ch. 8.4 - What is used to adjust the clamping pressure of...Ch. 8.4 - What does MCS stand for?Ch. 8.4 - What does WCS stand for?Ch. 8.4 - A workpiece offset is the distance from __________...Ch. 8.5 - Explain the difference between a machining center...Ch. 8.5 - Name the two major types of ATCs and briefly...Ch. 8.5 - What are the two basic types of tapping...Ch. 8.5 - What are the three most common styles of collets...Ch. 8.5 - What are the two basic types of tapping...Ch. 8.5 - Prob. 6RQCh. 8.5 - A programmable indexing fixture creates a fourth...Ch. 8.5 - A _______ ________ uses interchangeable tooling...Ch. 8.5 - Briefly describe a tombstone used for CNC...Ch. 8.5 - A custom ______ can be designed and built to hold...Ch. 8.5 - The combination of the machining operations...Ch. 8.6 - What are the three major axes used during CNC mill...Ch. 8.6 - What command would be given to turn on the spindle...Ch. 8.6 - What G-code designates IPM feed rate mode? IPR...Ch. 8.6 - What is the purpose of a clearance plane in CNC...Ch. 8.6 - What is the purpose of work coordinate systems?Ch. 8.6 - Briefly define linear interpolation.Ch. 8.6 - If during the last operation on a part, a G1 code...Ch. 8.6 - Briefly describe the use of I and J for the arc...Ch. 8.6 - Write two blocks of code that could be used to...Ch. 8.6 - Briefly explain the difference between rigid and...Ch. 8.6 - Define the initial plane for a canned drilling or...Ch. 8.6 - A G98 in a canned cycle sets the return point to...Ch. 8.6 - A _____ code is used to cancel a canned cycle.Ch. 8.6 - What two codes are used to activate automatic...Ch. 8.6 - What two codes are used to activate automatic...Ch. 8.6 - What code is used to cancel automatic cutter...Ch. 8.7 - Which must be set first, a work offset or a tool...Ch. 8.7 - What mode is used to manually enter programs into...Ch. 8.7 - What is the process called when a program is sent...Ch. 8.7 - Explain what may occur that makes it necessary to...Ch. 8.7 - Explain the purpose of homing.Ch. 8.7 - What is the process called when a new program is...Ch. 8.7 - What are two actions that can be taken during the...Ch. 8.7 - When automatic cutter radius compensation is used...Ch. 8.7 - Which machine mode allows short, temporary program...Ch. 8.7 - Which machine mode is used to run the machine...Ch. 8.7 - What are the two controls on the machine's control...Ch. 8.7 - What control panel feature can be used to slow a...Ch. 8.8 - Prob. 1RQCh. 8.8 - Prob. 2RQCh. 8.8 - What are the three primary steps in creating a CNC...Ch. 8.8 - Prob. 4RQCh. 8.8 - What is the definition of entity?Ch. 8.8 - Why should a toolpath be verified on the screen of...Ch. 8.8 - What is a post-processor used for?Ch. 8.8 - What is it called when mutiple touching entities...Ch. 8.8 - What type of cutting tool is usually used for...
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- Homework#8arrow_forwardBox A has a mass of 15 kilograms and is attached to the 20 kilogram Box B using the cord and pulley system shown. The coefficient of kinetic friction between the boxes and surface is 0.2 and the moment of inertia of the pulley is 0.5 kg * m^ 2. After 2 seconds, how far do the boxes move? A бро Barrow_forwardBox A has a mass of 15 kilograms and is attached to the 20 kilogram Box B using the cord and pulley system shown. The coefficient of kinetic friction between the boxes and surface is 0.2 and the moment of inertia of the pulley is 0.5 kg * m^2. Both boxes are 0.25 m long and 0.25 m high. The cord is attached to the bottom of Box A and the middle of box B. After 2 seconds, how far do the boxes move? A From бро Barrow_forward
- Homework#8arrow_forwardSign in PDF Lecture W09.pdf PDF MMB241 - Tutorial L9.pdf File C:/Users/KHULEKANI/Desktop/mmb241/MMB241%20-%20Tutorial%20L9.pdf II! Draw | I│Alla | Ask Copilot + of 4 D Topic: Kinetics of Particles: - Forces in dynamic system, Free body diagram, newton's laws of motion, and equations of motion. TQ1. The 10-kg block is subjected to the forces shown. In each case, determine its velocity when t=2s if v 0 when t=0 500 N F = (201) N 300 N (b) TQ2. The 10-kg block is subjected to the forces shown. In each case, determine its velocity at s-8 m if v = 3 m/s at s=0. Motion occurs to the right. 40 N F = (2.5 s) N 200 N 30 N (b) TQ3. Determine the initial acceleration of the 10-kg smooth collar. The spring has an unstretched length of 1 m. 1 σ Q ☆ Q 6 ا الى ☑arrow_forwardSign in PDF Lecture W09.pdf PDF MMB241 - Tutorial L9.pdf File C:/Users/KHULEKANI/Desktop/mmb241/MMB241%20-%20Tutorial%20L9.pdf II! Draw | I│Alla | Ask Copilot + 4 of 4 | D TQ9. If motor M exerts a force of F (10t 2 + 100) N determine the velocity of the 25-kg crate when t kinetic friction between the crate and the plane are μs The crate is initially at rest. on the cable, where t is in seconds, 4s. The coefficients of static and 0.3 and μk = 0.25, respectively. M 3 TQ10. The spring has a stiffness k = 200 N/m and is unstretched when the 25-kg block is at A. Determine the acceleration of the block when s = 0.4 m. The contact surface between the block and the plane is smooth. 0.3 m F= 100 N F= 100 N k = 200 N/m σ Q Q ☆ ا الى 6 ☑arrow_forwardmy ID# is 016948724 please solve this problem step by steparrow_forwardMY ID#016948724 please solve the problem step by spetarrow_forward1 8 4 For the table with 4×4 rows and columns as shown Add numbers so that the sum of any row or column equals .30 Use only these numbers: .1.2.3.4.5.6.10.11.12.12.13.14.14arrow_forwardMY ID# 016948724 please solve this problem step by steparrow_forwardThe pickup truck weighs 3220 Ib and reaches a speed of 30 mi/hr from rest in a distance of 200 ft up the 10-percent incline with constant acceleration. Calculate the normal force under each pair of wheels and the friction force under the rear driving wheels. The effective coefficient of friction between the tires and the road is known to be at least 0.8.arrow_forward1. The figure shows a car jack to support 400kg (W=400kg). In the drawing, the angle (0) varies between 15 and 70 °. The links are machined from AISI 1020 hot-rolled steel bars with a minimum yield strength of 380MPa. Each link consists of two bars, one on each side of the central bearings. The bars are 300mm in length (/) and 25 mm in width (w). The pinned ends have the buckling constant (C) of 1.4 for out of plane buckling. The design factor (nd) is 2.5. (1) Find the thickness (t) of the bars and the factor of safety (n). (2) Check if the bar is an Euler beam. Darrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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