We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byEvan Carrier
Modified over 2 years ago
WWW.LUDECA.COM UNDERSTANDING SPACER SHAFT ALIGNMENT Applying Tolerances the Right Way Alan Luedeking
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Suppose you had this misalignment. [please click] The light blue dotted line that will appear shows you how much offset you have between the shafts at the coupling. [please click, and watch the graphic] The green bracket shows you how much offset is the most you can have, high or low. This is your offset tolerance, when short coupled (with the shafts close together.)
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM These green lines show you what the worst angle is that you can have. This is your angularity tolerance. Now suppose you were to pull the angled shaft on the right away from the stationary shaft on the left. You still keep exactly the same offset that you had before, and angle too.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Now you need something to connect the ends of your two shafts together. This is called your spacer shaft. (This spacer shaft is also called a jackshaft if it is long, or a spoolpiece if it is short.) This is the angle needed on the left side between the spacer shaft and the stationary shaft, in order for the spacer shaft to rise up enough to connect to the shaft on the right. This angle is defined by the offset on the right, over the length of the spacer.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM This is the angle needed on the right side, between the spacer shaft and the shaft on the right, in order for the spacer shaft to connect to the stationary shaft on the left. This angle is exactly the same as the offset projected to the left side, between the two shafts centerlines, over the length of the spacer.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM These green lines represent the maximum angles that your spacer shaft is allowed to have, with respect to your stationary shaft on the left. This means that the offset between the machine on the right and the stationary machine on the left can not be more than what will be shown by the vertical green line which will appear on the right.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM These new green lines from the right represent the maximum angles that your spacer shaft is allowed to have with respect to your machine shaft on the right. This in turn means that the projected offset between your machine on the right and your stationary machine on the left is not allowed to be more than what will be shown by the vertical green line which will appear on the left.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM These projected offsets mean that your tolerance envelope for a spacer shaft is in fact a rectangular box. What this means is that the projected centerlines of both machines must always fall somewhere inside the box, for you to be well aligned.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM The machine on the right needs to come down to achieve a perfect alignment with the machine on the left. But is this really necessary? What if you are base-bound, or bolt-bound? Do you have to make this exact correction to get aligned?
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM The answer is NO. All you need to do is get the projected centerline into the box. Suppose that instead of coming down, you were to raise the back feet instead: You just raised the back feet, without moving the front feet.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Look what this did to your projected offset over on the left side: You got the projected centerline from the right machine into the box! Youre aligned!
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Even though the projected offsets on the right and left sides may seem big, theyre just a reflection of the angle between spacer shaft and each machine shaft at the opposite end, and these angles are acceptably small.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Looking at the values of the projected offsets and comparing these to the permissible values in the tolerance table is called the offset-offset method. Looking at the values of the angles and comparing these to the permissible values in the tolerance table is called the angle-angle method.
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM
© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM RPMEXCELLENT 6001.8 9001.2 12000.9 18000.6 36000.3 72000.15 48 Suppose your spacer shaft is 48 long. Your machine spins 1800 RPM. What is your tolerance for projected offset? 48 inches × 0.6 mils per inch = 28.8 mils. This value represents the boundaries of your tolerance envelope: the green box. The red offset on the right is 21 mils. The blue offset on the left is 24 mils. You are aligned, in the box! 28.8 mils 21 mils 24 mils SHAFT ALIGNMENT TOLERANCES (SPACER COUPLINGS)
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM RPMEXCELLENT 6001.8 9001.2 12000.9 18000.6 36000.3 72000.15 48 The angular- ity tolerance for spacer shafts at 1800 RPM is 0.6 mils per inch. The red angle on the left is: 21 mils ÷ 48 inches = 0.4375 mils per inch. The blue angle on the right is: 24 mils ÷ 48 inches = 0.5 mils per inch. Each of the angles is less than 0.6 mils per inch. You are aligned, in the box! 21 mils 24 mils SHAFT ALIGNMENT TOLERANCES (SPACER COUPLINGS) 0.4375 mils/inch 0.5 mils/inch
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Knowing how to align spacer shafts to the right tolerance will save you time!
WWW.LUDECA.COM© 2012 LUDECA, INC. All rights reservedWWW.LUDECA.COM Thank you!
©2005 LUDECA, INC. Understanding Standard Deviation.
FASEP Presents How Toe is measured on the FASEP wheel alignment system.
© 2012 Graphic Art System, all rights reservedwww.thefoilexperts.com Sample Job, Hot foil stamping.
Drawing In One-Point Perspective. The Horizon Line The red line is the Horizon Line. It represents the viewer's eye level. You can see the top of an object.
Here, we’ll show you how to draw a ray diagram for a convex mirror.
1 SheetCourse: Engineering Graphics 1504Memorial University of Newfoundland Engi 1504 – Graphics Lecture 5: Sectioning and Dimensioning l Sectioning an.
CHOCOLATE MOLD If there is anything missing from this PowerPoint beyond what is acknowledged, please tell Grant Dunbar. Thanks!!!
Course 3 Points, Lines, Planes, and Angles The measures of angles that fit together to form a straight line, such as FKG, GKH, and HKJ, add to 180°.
Making the Chassis (1/4) Create Chassis: 1.Use the Xacto knife, metal straight edge, wood and cardboard to cut your pieces (Sides & Tops) for the chassis.
Pre-alignment: How 15 Minutes Can Save You $$$$$$
Polygons Mr Red is going to walk around the outside of the polygon. The black arrow shows the way he is facing as he walks.
ENGINEERING ADVENTUREwww.BLOODHOUNDSSC.com BLOODHOUND SSC AMAD GEARBOX MOUNTING PLATE ASSEMBLY ABH:E0011 The following explains the AMAD gearbox mount.
How do you measure?. What is a foot? A foot is 12 inches long. It can be used to measure books, tables, doors, etc
Observing Seasons. What patterns did you notice yesterday in the graphs we looked at? Do the Northern and Southern Hemispheres have the same seasons?
Square Folds For each of these challenges, start with a square of paper. 1.Fold the square so that you have a square that has a quarter of the original.
Shaft Alignment Nizwa College of Technology. Shaft Alignment Shaft alignment is the process to align two or more shafts withalignshafts each other to.
This is what we want to produce Import sketch dimensions Label angles Set the scale Add linear dimensions.
Soft Foot Diagnosis & The Soft Foot Wizard. Detection vs. Correction The amount of Soft Foot detected does not equate to the required Soft Foot correction!
2-POINT PERSPECTIVE. Exercise: Follow the next steps in order to create a box in a 2-point perspective.
Plans for the 2015 Invention Challenge Target Paul MacNeal August 9,
PLANE MIRROR REFLECTION Law of Reflection – the angle of the incident light ray is equal to the angle of the reflected light ray.
How much cardboard does it take to make a cereal box? Have you ever wondered?
Dimensioning. Overview: Graphical entities on engineering drawings describe shape and position. Dimensions and notes describe size and necessary manufacturing.
ASSIGNED WHEEL HUB – GD&T A STEP BY STEP WALKTHROUGH.
Dimensioning. The Ames Lettering Guide is a transparent plastic device composed of a frame holding a disc containing columns of holes. The vertical distances.
Dimensioning. Why do we use Dimensions? Size and Location of all features Engineers, designers, and engineering technologists need to know.
List #3 3 rd hundred most commonly used words Directions: 1. Please read through this list with a partner 2. Time each other reading the words 3. Start.
FASEP Presents Is FASEP a 6-sensors or an 8-sensors type Measuring Device?
Doing an Assembly – Catia’s Answer IE 1225 Introduction to Design & Manufacturing Dr. Richard Lindeke, Ph.D.
Addition and Subtraction of Integers In this tutorial, we will learn how to add and subtract signed numbers with the help of a toy car. The line the car.
EXAMPLE 3 Find side lengths SOLUTION First, write and solve an equation to find the value of x. Use the fact that the sides of a regular hexagon are congruent.
SOLIDWORKS: Lesson II – Revolutions, Fillets, & Chamfers UCF Engineering.
Targeting Grade C Angles SSM1 GCSE Mathematics. Practice 1:: To recognise vertically opposite, alternate (Z), corresponding (F) and interior angles Practice.
DIMENSIONING Why do we need to dimension drawings? Dimensions and notes define the size, location, finish and other requirements to fully define what you.
Symmetry & Congruence Congruence This is where shapes are identical in size and only differ in their presentation. (may be rotated) All angles must be.
9-7:Congruent and Similar Figures Congruent Figures Similar Figures.
Video Game Rendering Mathematics Zack Booth Simpson.
WEIGHT TRAINING LIFT EXECUTION TUTORIAL Click anywhere to advance to next slide POWER CLEANS.
Step1 Insert an ‘oval’ AutoShape on your slide and resize and recolor it to your liking. (click to continue) step2 To make sure that it is a perfect circle,
SE 313 – Computer Graphics Lecture 14: Armatures Lecturer: Gazihan Alankuş 1.
First things first – open SketchUp. You may be asked to choose a ‘Template’ For everyday use, choose the Simple Template – Meters Do not choose the Template.
Project FUNDA Hear it Learn it Lets make engineering more easy engineering108.com.
Click mouse. EQUATIONS The important thing to remember about equations is that both sides must balance (both sides must equal each other). This means.
Trigonometry: Part 1 Similarity ReviewMenu This is the type of problem from 1 st semester.. We used the measurements in one triangle to find the measurements.
AREA OF A TRIANGLE. Given two sides and an included angle:
Getting Started With AutoCAD ENGR 2 Week #1 Laboratory.
1. Rotate the top view of the hood using the green (or red) Protractor, and the front view using the blue tool.
Long and Short Term Goals To develop a responsible and positive attitude we chose Respect for Self, Others and Learning for the long term goal. Our students.
© 2017 SlidePlayer.com Inc. All rights reserved.