lecture notes introduction to cnc machines and cnc programming

... Lecture Notes: Introduction to Finite Element Method Chapter Introduction Row and Column Vectors v = [1 v v2 v3 ]  w1    w = w  w   3 Matrix Addition and Subtraction ... 2×2 and 3×3 matrices, their determinants are given by a b  det   = ad − bc c d  © 1998 Yijun Liu, University of Cincinnati Lecture Notes: Introduction to Finite Element Method Chapter Introduction ... system of equations is to found the inverse of the coefficient matrix © 1998 Yijun Liu, University of Cincinnati 11 Lecture Notes: Introduction to Finite Element Method Chapter Introduction Solution...

Ngày tải lên: 17/10/2013, 11:15

... matrix, and x and b are (column) vectors of dimension n © 1997-2003 Yijun Liu, University of Cincinnati Lecture Notes: Introduction to Finite Element Method Chapter Introduction Row and Column Vectors ... of Cincinnati iv Lecture Notes: Introduction to the Finite Element Method Preface These online lecture notes (in the form of an e-book) are intended to serve as an introduction to the finite element ... Link to CAE Software and Companies © 1997-2003 Yijun Liu, University of Cincinnati Lecture Notes: Introduction to Finite Element Method Chapter Introduction Objectives of This FEM Course Understand...

Ngày tải lên: 23/10/2013, 15:46

... oflines and angles, properties of parallel _ and perpendicular lines, and definitions of arcs, etc., are all that are needed to generate these linkages Compass, protractor, and rule are the only tools ... construction lines from point C) to C2 and from point D) to D2 Bisect line C) C2 and line D)D2 and extend the perpendicular bisectors in convenient directions The rotopole will not be used in this ... any Grashof condition and will usually require the addition of a dyad to control and limit its motion to the positions of interest Compass, protractor, and rule are the only tools needed in this...

Ngày tải lên: 08/08/2014, 12:23

... the position vectors Zl and Zz The angle corresponds to the Equations 5.31 can be solved using the approach of equations 5.27 and 5.18, by changing W to U and Z to S and using the definitions ... inserted to get the coordinates of vectors W and Z, and a second time with values from equation 5.31 in the matrix to get the coordinates of vectors U and S Equations 5.2 are then solved to find ... linkage (crankshaft, connecting rod, piston) used in every piston engine and shown in Figure 13-3 (p 601) This linkage has two toggle positions (top and bottom dead center) giving it two branches...

Ngày tải lên: 08/08/2014, 13:20

... 244) It and equation 6.6 are all that are needed to solve for everything else In this example link is the driver, and 8z and OOz are given for the "freeze frame" position shown We wish to solve ... assume friction to be negligible in this example Any force or velocity vector applied to point A can be resolved into two components along these two axes which provide a translating and rotating, ... (AA) using equations 7.4 and 7.6 by breaking AA into its normal and tangential components (Steps 1and 2) We then used the point (A) just solved for as a reference point to define the translation...

Ngày tải lên: 08/08/2014, 13:20

... applicable to the fall with slight modification To convert rise equations to fall equations, it is only necessary to subtract the rise displacement function s from the maximum lift h and to negate ... assembly machines never allow the workpiece to stop and thus are capable of higher throughput speeds All operations are performed on a moving target Any tools which operate on the product have to "chase" ... matched exactly to the conveyor, in order to carry the tools alongside for a long enough time to their job These cam driven "chaser" mechanisms must then return the tool quickly to its start position...

Ngày tải lên: 08/08/2014, 13:20

... needs to remove mass (in the right places) from parts in order to reduce the stresses and deflections due to F ma Thus the designer needs to have a good understanding of both material properties and ... stress and deflection analysis to properly shape and size parts for minimum mass while maximizing the strength and stiffness needed to withstand the dynamic forces = 10.4 MASS MOMENT AND CENTEROF ... corresponds to a center of rotation near the end of the handle, and the handle is usually contoured to encourage gripping it there The explanation of this phenomenon is quite simple To make the...

Ngày tải lên: 08/08/2014, 13:20

... than the peak torque We would like to provide some means to smooth out these oscillations in torque during the cycle This will allow us to size the motor to deliver the average torque rather ... of torque as representing energy delivered by the driver (motor) and stored temporarily in the moving links, and the negative pulses of torque as energy attempting to return from the links to ... constant speed The peak torques needed may be so high as to require an overly large motor to deliver them However, the average torque over the cycle, due mainly to losses and external work done,...

Ngày tải lên: 08/08/2014, 13:20

... than the peak torque We would like to provide some means to smooth out these oscillations in torque during the cycle This will allow us to size the motor to deliver the average torque rather ... of torque as representing energy delivered by the driver (motor) and stored temporarily in the moving links, and the negative pulses of torque as energy attempting to return from the links to ... constant speed The peak torques needed may be so high as to require an overly large motor to deliver them However, the average torque over the cycle, due mainly to losses and external work done,...

Ngày tải lên: 08/08/2014, 13:20

... text The student is encouraged to investigate these examples with program ENGINE in order to develop an understanding of and insight to the subtleties of this topic A user manual for program ... single-cylinder internal combustion engine and piston pumps We will now extend the design to multicylinder configurations Some of the problems with shaking forces and torques can be alleviated by proper ... derivations and figures in the preceding sections have shown that significant forces are developed both on the pivot pins and on the ground plane due to the gas forces and the inertia and shaking...

Ngày tải lên: 08/08/2014, 13:20

... prompt you to save the data to disk and File you and The Save and Save As selections on the File menu prompt you to provide a file name and disk location to save your current model data to disk ... him at rlnorton@wpi.edu Learning Tools All the custom programs provided with this text are designed to be learning tools to aid in the understanding of the relevant subject matter and are specifically ... Clicking on this button will cause that segment's S, V,A, and J data to be calculated and stored After the Calc button has been clicked for any row, the Plot and Print buttons for that segment...

Ngày tải lên: 08/08/2014, 13:20

... Rapid Prototyping  SAMPLE CNC MACHINES CNC TURNING CNC MILLING CNC LASER CUTTING CNC PLASMA CUTTING 10 CNC PRESS 11 CNC RAPID PROTOTYPING 12 INDUSTRIES MOST AFFECTED by CNC  Aerospace  Machinery ... TOOL WITH ROTATING TOOL HORIZONT AL AXIS VERTICAL AXIS horizontal and parallel to work holding surface, (+X) to the right when viewed from spindle towards work piece horizontal and parallel to ... surface, (+X) to the right when viewed from spindle towards column X radial and parallel to cross slide, (+X) when tool goes away from the axis of spindle Y apply right hand rules parallel to and positive...

Ngày tải lên: 23/07/2015, 15:20

... Classes and Methods: Tutorial: Introduction to Visual Studio and C# Exception Handling In programming error and exception handling is very important C# has built-in and ready to use mechanism to handle ... them to the “Form”, as shown below: 2.2.5 Editors and Designers Visual Studio has different editors and design tools Graphical User Interface Designer: Tutorial: Introduction to Visual Studio and ... menu: Tutorial: Introduction to Visual Studio and C# 15 Visual Studio The most used tool is “Start Debugging” (Shortcut Key: F5) Tutorial: Introduction to Visual Studio and C# Windows Programming...

Ngày tải lên: 05/10/2013, 17:30

... inductors, and transistors They are connected to form circuits [e.g., a voltage regulator or an automatic gain control amplifier (AGC)] If such an amplifier is put into a physical enclosure and ... long but they have to be lightweight and are assumed to withstand temporary blasts of air and mud due to nearby explosions [15] Towers are not cheap items, although made of steel and bolts or often ... task to be handled by a specific RF design and subsequently try to figure out what kind of equipment is needed and how it should be organized My emphasis is on processes and phenomena, and I...

Ngày tải lên: 05/11/2013, 12:15

... Bell banded together as Telecom Canada to compete with Unitel Telecom Canada became the Stentor Group Recently many US carriers have moved into Canada to compete for long distance services and ... potential investors by lecture 1.doc Page (6) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_ 01 broadcasting the image of a dollar sign Farnsworth receives backing and applies for ... signals were also used for communication lecture 1.doc Page (6) CSN200 Introduction to Telecommunications, Winter 2000 Lecture_ 01 360 BC : Water telegraphs store detailed information transmitted...

Ngày tải lên: 10/12/2013, 08:15

... Module 1: Introduction to Exchange 2000 and the Web Storage System 11 # Introduction to the Web Storage System Topic Objective To list the topics related to Introduction to the Web Storage System ... group stores into storage groups for easier maintenance ! Storage Groups contain Multiple Stores Storage Group A Store Store Store Store Store Transaction Log Transaction Log Storage Group B Store ... up to five stores in one storage group Module 1: Introduction to Exchange 2000 and the Web Storage System Folder Trees Topic Objective To define public folder trees and their advantages, and to...

Ngày tải lên: 11/12/2013, 14:15

... data is stored in both detailed and summarized levels OLAP cubes give users the opportunity to easily drill down—that is, to double-click top -to- bottom through the summarized levels to more detailed ... as their data sources Customer_Dim Customer_Dim ShipperKey ShipperKey ShipperID ShipperID CustomerKey CustomerKey CustomerID CustomerID To facilitate data retrieval and analysis, a data warehouse ... 1: Introduction to Data Warehousing and OLAP Working with Dimensions and Hierarchies Topic Objective To present the purposes of OLAP dimensions and hierarchies ! Lead-in Dimensions Allow You to...

Ngày tải lên: 21/12/2013, 19:15

... are ways to choose a ring for the left hand and, for each such choice, there are three ways to choose a ring for the right hand Hence, there are · = 12 ways to choose a ring for each hand This ... such hands Hence, P (A) = #(A) 37 = 40 = = 0004 #(S) 2470 (c) One hand of four cards is dealt to Arlen and a second hand of four cards is dealt to Mike What is the probability that Arlen’s hand ... PROBABILITY into two sets: those who have contracted the virus and developed antibodies to it, and those who have not contracted the virus and lack antibodies to it We denote the first set by D and the...

Ngày tải lên: 16/01/2014, 16:33

... you’re talking to the right person? VPNs, PKI, and PGP - SANS ©2001 To architect and deploy a VPN, we need to understand how to apply these three tools These concepts are easy to grasp at the ... (similar to certificate storage) and you choose from that list when you are going to encrypt a message to send to that person Of course, you need to make sure that you are sending the email to the ... need to export the key, then sign it and send it to the intended user: VPNs, PKI, and PGP - SANS ©2001 39 Conversely, the person you are sending the data to has to have your public key in order to...

Ngày tải lên: 17/01/2014, 07:20