Tham khảo tài liệu 'mcgraw-hill build a remote controlled robot part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER TWO BODY FRAMEWORK Questor s body is made from five 8-foot X 1-inch X 1-inch X 1 8-inch strips of aluminum angle. I chose this material over wood or plastic because while slightly more expensive it is stronger and more lightweight. Also if care is taken aluminum is relatively easy to work with. The aluminum angle is used to form two boxes. These boxes are called the upper framework and the lower framework. Once joined they make up Questor s body. Before the boxes are constructed each section of aluminum angle used to make up that portion of the body is marked and drilled with holes to be used later in the robot s construction. These predrilled holes are best made when the framework is in pieces rather than when assembled. A chart will list how to assemble each box so all the predrilled holes are in their proper locations when the framework is complete. Remember to take your time and not to cut or drill the aluminum angle until you have checked your measurements or hole locations against the book. CUTTING ALUMINUM Figure 2-1 shows how to cut each of the five aluminum strips into the pieces that make up Questor s framework. Cut the strips with a hack saw and use a miter box to achieve straight cuts. Be careful not to cut the aluminum before you have checked your measurements. Copyright 2002 The McGraw-Hill Companies Inc. Click Here for Terms of Use. 13 FIGURE 2-1. Aluminum angle cutting guide. Body Framework 15 Table 2-1. Parts List Amount Item 5 8-foot X 1-inch X 1-inch X 1 8-inch angle aluminum 50 1 8-inch pop rivet and rivet gun 8 1-inch X 5 32-inch-diameter bolt nut and lockwasher set 6 1-inch X 1 4-inch-diameter bolt nut and lockwasher set 1 Vacuum cleaner kit Once you have cut the strips into pieces separate them so that you have four 36-inch four 6-inch six 10-inch and ten 20-inch pieces. Keep all the extra aluminum for use later. Now that you have the various pieces grouped together check to see if they are all the same length. If the pieces are .
