Department of Mechanical Engineering ME EN 4000 - Engineering Design I Engineering Lab 2 Assigned: Thursday, September 15, 2005 Due: Friday, September 23, 2005, 1pm, to the ME4000 basket in 2110 MEB Introduction This second lab teaches the creation of an assembly, and the modeling of parts within an assembly. The exercise introduces modeling according to assembly requirements and manufacturing constraints (part files are available in ProE Wildfire, SolidWorks, and iges format). Task 1. Download the part files of all components and create an assembly (see attached drawing – the spindle nut is not shown). 2. Create a solid model of a spindle that assembles inside the hub shown on the next page. The complete assembly consists of the spindle, two deep-groove bearings (40x68x15 and 30x55x13), the hub, a pressure ring, and a spindle nut for the fixed bearing. 3. Create an engineering drawing of the spindle showing all details and dimensions that are relevant to the manufacturing of the part. Do not concern yourself with tolerances - just display the nominal dimensions. 4. Create an engineering drawing of the assembly with a cut through the assembly (no dimensions). Print out both engineering drawings, and write your name on it. Hints • The smaller of the two bearings serves as the fixed bearing, the larger bearing is allowed to slide. • The pressure ring has a center bore with clearance for the spindle and locates the fixed bearing using 4 M12 bolts. • Corners are never perfectly sharp because the edge of every cutting tool has a radius. • It is good practice to avoid sharp edges. Use chamfers to ease assembly and avoid injuries. • Dimensions provided in drawings should reflect both manufacturing and measuring aspects. Name: ID #:2SECTION A-ASCALE