Donald B. Cheke. TurboCAD Pro V20.1 Hub Motor

Transcription

1 TurboCAD Pro V20.1 Hub Motor Donald B. Cheke 1

2 Copyright 2013 Donald B. Cheke TurboCAD is a registered trademark of IMSI/Design. Published by: Donald B. Cheke Saskatoon, SK Canada Visit: All rights reserved No part of this document may be reproduced, copied, stored on a retrieval system or transmitted in any form without written permission from the author. The purchaser may, however, print one copy of the document to paper and may make one backup copy of the downloaded material for personal safe keeping. Limitation of Liability While every effort has been taken in the preparation and the writing of this document the author assumes no responsibility for errors and/or omissions nor for the uses of the material and the decisions based on such use. No warranties are made, express or implied with regard to either the contents of the document, its merchant ability or fitness for a particular purpose. The author should not be liable for direct, indirect, special, incidental or consequential damages arising out of the use or inability to use the contents of this document. Special Note All of the work presented within this tutorial is based on TurboCAD Pro V20.1 (64-Bit). Although users of previous versions are welcome to try the tutorial it cannot be stated what results will be achieved. Many changes, some subtle and others not so subtle, are made with each program revision. Although many steps and directions would be generic some may not be. The same can be said for tools between versions. Older versions may not have the same tools as Pro V20.1 and if the same tools are available the tools themselves may have been revised and hence, work in a different manner than they previously did. 2

3 Table of Contents Table of Contents... 3 Introduction... 4 Drawing Engine Selection... 6 Setup... 8 Front Hub Front Hub Lid Front Hub and Front Hub Lid Bearings Axel Shaft Planet Carrier Hub Planet Carrier Rim Planet Carrier Lids Planet Gear Axels, Bearings & Retainer Clips Planet Gears & Ring Gear Sun Gear Rotor Rotor Bearings Stator Holder Stator Laminate & Stator Laminate Insulator Stator Windings Rotor Magnets Rotor Backing Iron Front Hub Lid Washers and Screws Ground Plane Materials Application Named View Render Scene Luminance Render Scene Environment Saving the Rendered Image Cutaway Saving the Cutaway Rendered Image

4 Introduction In this day and age emission friendly devices have become common place and one that stands out for those partial to bicycle travel is the electric hub motor. The hub motor is a device that integrates into the front wheel (in this case) and provides locomotion to the rider when desired. While looking for resources to help understand the mechanisms involved in the construction of the hub motor I happened across Per Hassel Sørensen s GrabCAD page and his Geared Hub Motor. To make tutorial creation easier I contacted Per Hassel Sørensen and received permission to use his model as the basis for this tutorial. Check out Per Hassel Sørensen GrabCAD page and the hub motor model, if desired. I hope that you enjoy the tutorial. Best regards, Don Within the tutorial the reader will be led through each keystroke to create the hub motor that is illustrated on the cover of the tutorial. Aside from learning how to draw in TurboCAD, the user will learn how to insert standard lighting and how to utilize render scene luminance. The reader will learn how to establish a render scene environment and the reader will learn how to render their drawing and save it in a high resolution image format. Please note that the hub motor presented in this tutorial is almost certainly a patented product. It is being drawn within the tutorial only to aid in learning how to draw with the program. Please treat it as a fully patented design belonging to someone else and respect any copyright that may exist. This tutorial is in no way intended to teach mechanical design but rather it is intended to teach the use of some of the tools that TurboCAD has to offer and to introduce the new user to a drawing methodology. The author feels confident that the techniques outlined within the tutorial can help lay the foundation for future successful TurboCAD drawing and illustration for even the newest user. As with any technically advanced software, the user is generally faced with a steep learning curve. It is the hope of the author that the money and time spent working through a Textual Creations tutorial will help ease the learning and allow the reader to come away feeling confident that they made a wise decision. This tutorial will assume that the reader has the Platinum edition of TurboCAD Pro V20.1 (64-Bit). Although no platinum architectural specific tools are used a platinum mechanical specific tool is (Add Hole). Note that the author has added a brief note within the tutorial to indicate what can be done in lieu of this tool. The author does not have the 32-Bit version of TurboCAD V20, but did save the final drawing back to V18 (32-Bit version). The model opened but would not render in V18 (out of memory). There are many ways to approach a project and it is likely that each person using the program would proceed in very different ways, so be open to alternative methods as experience builds. This tutorial assumes that the beginner has studied the desktop to some degree and can locate most of the tools. Since there are endless desktop configurations that can be set up in TurboCAD the author has 4

5 opted to illustrate the required tools with the TurboCAD Classic user interface with its Office 2003 theme and the default toolbars in their undocked format. Please remember that any supplied images and files are for use within the tutorial only and may not be shared or sold to others. Place the supplied images in a permanent location on the user s hard drive. For those working through the tutorial in pre-v18 versions please note that most of the functions described in the tutorial, as being on the Modify menu, were on the Format menu in previous versions of the program. Also note that render times are much better in V18, V19 and V20 than one will see if using previous versions of TurboCAD. TurboCAD now uses Multi-Threading for renders and can make use of multiple processors. The author has a three year old, off the shelf, Acer with 6 processers and has enabled 5 for rendering. This is looked at as part of the set up further along. Lastly, the Copy in Place tool was reintroduced into TurboCAD V18 as a permanent tool. Users who don't have this new tool will need to use the Make Copy method. That is to select the object to copy in place, select the Make Copy tool to turn it on, tab into the first field on the Inspector Bar but don't change anything simply press Enter. Select the Make Copy tool again to turn it off. 5

6 Tab into the Inspector Bar and enter 8.5 in the Distance A field and 8.5 in the Distance B field. Press Enter. Select the horizontal line, as indicated in the picture below, to define Distance A and then select the vertical line, as indicated in the picture below, to define Distance B. In progress below. Tab into the Inspector Bar and enter 10 in the Distance A field and in the Distance B field. Press Enter. Select the horizontal line, as indicated in the picture below, to define Distance A and then select the vertical line, as indicated in the picture below, to define Distance B. In progress below. 38

7 To help create the 3D component, select the Revolve tool from the 3D Object toolbar. Select the profile as the object to revolve. Using two V SEKE snaps at the bottom two corners of the selection define the revolution axis. In progress below. Ensure that Use Compound Profile is NOT engaged or it will not work in this case. An additional object is required on the front of the hub as seen in the reference model. It will be created by extruding a new profile that will be created. 39

8 Press Ctrl + K to open the Select by Colors dialogue. Select Coral and Blue and then click OK. Assign the selection to the 2D layer. Turn off the grid for moment while a render check is performed. Right mouse click over the Suppress Hidden Line render tool icon to open the Camera Properties dialogue. Check Hidden Line and uncheck Nonrenderable objects. Click OK. 57

9 Orbit the drawing to look inside. To orbit press and hold the mouse wheel down while moving the cursor. Select the Wireframe tool from the Render toolbar. 58

10 Right mouse click and select Close from the local menu. Press Ctrl + K to open the Select by Colors dialogue. Select Steel Blue and click OK. Press Delete to remove the trace aids. To help create the 3D component, select the Revolve tool from the 3D Object toolbar. Select the closed polyline profile as the object to revolve. Using two V SEKE snaps, snap the bottom two corners of the short red line to define the revolution axis. In progress below. 101

11 Press the Space Bar to exit the tool. An additional object is required on the hub lid as seen in the reference model. It will be created by extruding a new profile that will be created. The ribs will be addressed later. Before creating the object the existing unit will be rotated. Drag the selection cursor around the revolved hub lid and its profile to select them. Release the mouse button. In progress below. 102

12 Tab into the Inspector Bar and enter 12 in the Sets field. Press Enter. Switch to Isometric NE view. Press Ctrl + A to select all visible objects. Press and hold the Shift key down. Left mouse click the lid to deselect it. Release the Shift key. With only the ribs selected, select the MultiAdd tool from Modify/Modify 3D Objects/3D Boolean Operations menu at the top of the TurboCAD desktop (it has the wrong tool icon). Select the 3D Add tool from the Boolean & Facet toolbar. Select the hub lid and then the ribs as the objects to add. In progress below. 122

13 Press the Space Bar to exit the tool. Turn on the Front Hub layer. Turn off the grid for moment while a render check is performed. Select the Suppress Hidden Line render tool icon to render the model for a render check. Switch to Isometric SE view. Select the Wireframe tool from the Render toolbar. 123

14 Tab into the Inspector Bar and enter ( ) in the Delta Y field. Press Enter. Press Esc to deselect the selection. Select Refresh at the top of the Design Director to deselect any selected layer names otherwise they will all turn off when 2D is turned off in the next step. A user can also left mouse click in a clear area below the names to deselect layer names. Turn off the 2D layer. 158

15 Planet Carrier Hub The planet carrier components will now be created beginning with the planet carrier hub. To help build the profile, select the Rectangle tool from the Line toolbar. Select Green Yellow from the color dropdown menu on the Property toolbar. C SEKE snap the first point of the rectangle to the right edge of the axel shaft. In progress below. Move the cursor in a right upwardly direction for a short distance and then Tab into the Inspector Bar and enter 13.9 in the Size A field and 18.5 in the Size B field. Press Enter. V SEKE snap the first point of the next rectangle to the upper left corner of the last rectangle. Move the cursor in a right downwardly direction for a short distance and then Tab into the Inspector Bar and enter 7.8 in the Size A field and in the Size B field. Press Enter. V SEKE snap the first point of the next rectangle to the lower left corner of the last rectangle. Move the cursor in a right upwardly direction for a short distance and then Tab into the Inspector Bar and enter 2.8 in the Size A field and 7 in the Size B field. Press Enter. 159

16 Assign the still selected lid to the Planet Carrier Rim Lid 2 layer. Select the copied lid and assign it to the Planet Carrier Rim Lid 1 layer. In progress below. Press Esc to deselect the selection. Switch to Isometric SE view. 182

17 Select the red 95 mm circle. Tab into the Inspector Bar and enter 103 in the Size X and Size Y fields and 90 in the Z Rotation field. Press Enter. If rotating to 90 failed, do 90 rotation step on its own again. Select the 36 tooth gear contour. Select the Radial Copy tool from the Copy toolbar. Place the cursor by the edge of the inner circle and C SEKE snap to define the center of the arc. In progress below. 199

18 Tab into the Inspector Bar and enter 3 in the Sets field. Press Enter. To help place the profiles in the correct location, switch to Right view. Select Plane by Active View from the Workplane toolbar. Turn on the Front Hub layer and select the front hub. Press D SEKE and relocate (V SEKE) the reference point to the upper left corner of the ring gear recess, as indicated in the picture below. Shadowed image shows corner prior to relocation of the reference point. Note the Y Position field. 200

19 Tab into the Inspector Bar and enter 2.5 in the Start Radius field. Press Enter. Select the stator holder as the object to fillet. Double click the upper outer circle to select it as the edge to fillet and to perform the operation. In progress below. Press the Space Bar to exit the tool. A 4.5 mm deep tapered groove is required on the stator holder, as well as three rib like objects. Before creating those objects the rotor will be rotated and placed into position. Select the rotor. Press D SEKE and relocate (C SEKE) the reference point to the upper inner circular edge. In progress below. 254

20 Tab into the Inspector Bar and enter 270 in the X Rotation field. Press Enter. Turn on the Axel Shaft layer. Left mouse click on the reference point of the selection to pick it up. Move the cursor to the edge of the circle at the right end of the shaft, as indicated in the picture below, and C SEKE snap to place the selection. In progress below. Switch to Right view. Tab into the Inspector Bar and enter in the Delta Y field. Press Enter. Press Esc to deselect the selection. 255

21 Stator Laminate & Stator Laminate Insulator The stator laminate and stator laminate insulator are the same shape, the stator laminate insulator is just a bit thicker. Both will be created by extruding a 2D profile that will now be addressed. Below is what will be worked towards. It will be created by making one segment and radial copying the balance. Switch to Front view. Select Plane by Active View from the Workplane toolbar. Select the Circle Center & Point tool from the Circle/Ellipse toolbar. If need be, select Green Yellow from the color dropdown menu on the Property toolbar. C SEKE snap the outer circle of the stator holder to place the first point of the first circle. Tab into the Inspector Bar and enter 53.8 in the Diameter field. Press Enter. C SEKE snap the outer circle of the stator holder again to place the first point of the second circle. Tab into the Inspector Bar and enter 90 in the Diameter field. Press Enter. 275

22 Turn off the Stator Holder layer. To help determine segments, select the Line tool from the Line toolbar. Select Green Yellow from the color dropdown menu on the Property toolbar. Place the cursor by the edge of the inner circle and C SEKE snap to place the first point of the line. Tab into the Inspector Bar and enter 50 in the Length field and 90 in the Angle field. Press enter. Press the Space Bar to exit the tool. Select the new line. Select the Radial Copy tool from the Copy toolbar. Place the cursor by the edge of the inner circle and C SEKE snap to define the center of the arc. In progress below. 276

23 Select the stator winding as the object to fillet. Double click the top node edge, as indicated in the picture below, to select it as the edge to fillet and to perform the operation. In progress below. Tab into the Inspector Bar and enter 2 in the Start Radius field. Press Enter. Select the stator winding as the object to fillet. Double click the bottom node edge, as indicated in the picture below, to select it as the edge to fillet and to perform the operation. In progress below. Press Ctrl + K to open the Select by Colors dialogue. Select Blue and click OK. 307

24 Assign the selection to the 2D layer. Before radial copying, the winding will be made into a block. Select the stator winding. Left mouse click on the yellow reference point of the selection and hold down the mouse button. Drag the cursor to the Blocks palette tab and when the palette opens continue dragging the cursor to the main window of the palette. When the move cursor is over the window release the mouse button. Type Stator Winding in the Block Name field of the Create Block dialogue that opens and then click OK. Create a new layer called Stator Windings. Assign the selection to the Stator Windings layer. Switch to Front view. With the winding still selected, select the Radial Copy tool from the Copy toolbar. Place the cursor by the edge of the inner circle and C SEKE snap to define the center of the arc. In progress below. Tab into the Inspector Bar and enter 18 in the Sets field. Press Enter. 308

25 Select the facet on the front hub, as indicated in the picture below, as one of the facets to change. Press and hold the Shift key down. Left mouse click the five other sliced facets on the front hub, as indicated in the picture below, to select them. Release the Shift key. Orbit if need be to find facets. Open the Materials palette. Locate the Metals Category and then double click on the Cutaway Edge Paint A thumbnail to apply the material to the selected facets. 383

26 Press Esc to deselect the selection. Turn off the Front Hub layer and turn on the Front Hub Lid layer. Select the facet on the front hub lid, as indicated in the picture below, as one of the facets to change. Press and hold the Shift key down. Left mouse click the two other sliced facets on the front hub lid, as indicated in the picture below, to select them. Release the Shift key. Open the Materials palette. Locate the Metals Category and then double click on the Cutaway Edge Paint A thumbnail to apply the material to the selected facets. 384