Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Chapter 8.2, Problem 1RQ
Name the two primary machine axes on most CNC turning machines.
- a. ________________
- b. ________________
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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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- Consider the bar, shown in Figure 1 that undergoes axial displacement due to both a distributed load and a point force. The bar is of cross-sectional area A = 1.10-3 m², and has a modulus of elasticity E = 100 GPa. 1(x) = 5 kN/m x=0.0 x=2.0 2.0m 10 kN Figure 1: Bar domain with varying distributed forces. a) The general form of the governing equations describing the bar's displacement, u(x), is given by, d (AE du(x)) -) +1(x) = 0. d.x dx What are the accompanying boundary conditions for this bar? b) Using the mesh in Figure 2, form the basis functions associated with element 2 and write the FEM approximation over the element. 1 2 3 1 2 1m 1m Figure 2: Mesh of 2 elements. Elements are numbered with underlines. c) The general form of the element stiffness matrix system, with nodes indexed by i and j, is, AE Uj N;(x)l(x)dx – Ng(0)f(0) ¥ [4]}]{{}}={{{}\(\\+} + {N(2)f(2) = N (0)5() }, (1) 0, respectively. L = (2) where f(2) and f(0) denote the boundary forces at positions x 2 and x Evaluate…arrow_forwardanswer pleasearrow_forwardamination) Question 1 Consider the bar, shown in Figure 1, that undergoes axial displacement due to both a distributed load and a point force. The bar is of cross-sectional area A = 1.103 m2, and has a modulus of elasticity E = 100 GPa. 1(x) = 5 kN/m 10 kN X x=0.0 x=2.0 2.0m Figure 1: Bar domain with varying distributed forces. a) The general form of the governing equations describing the bar's displacement, u(x), is given by, d (AE du(x)) + 1(x) = 0. dx dx What are the accompanying boundary conditions for this bar? MacBook Air a 会 DII F5 F6 F7 F8 80 F3 F4 0/ 20 [8 marksl 8 FOarrow_forward
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