Mechanical drawing of lifting hooks,
The drawing of the arc of the tip of the hook must be made of two auxiliary circles, and then through the contact with the center line Find the center of the circle to draw the radius of the radius 40 and the radius 23. The radius of The circular arc of 4 is completed by rounding corners or drawing circles (tangent, tangent, radius). The steps are as follows. First, the radius of A is the auxiliary circle with A radius of 60, which is the intersection point of the horizontal center line at the lower end C, and then C is the circle with a radius of 40. Let's draw the radius of B as the radius of 71 and draw the auxiliary circle The horizontal center line of the upper end is D, and then D is a circle with a radius of 23. Then choose "Tangent, tangent, radius" draw the circle of radius 4. Finally, use the pruning tool "TR" pruned the extra round to the drawing of the figure.
Draw A circle with A diameter of 40, and draw A circle with A radius of 48, and then use the rounded corners The "F" input radius is "60", and then choose a circle with a diameter of 40 and a vertical line to complete the radius The drawing of the arc of 60. Use the same method (inverted "F") to draw the arc of radius 40 Finish system. This is done in the top and middle of the hook.
Place the centerline layer on the current layer and draw the center line Use the line command "L" to draw the top part of the hook (the "38" part) and take it down The vertical lines of the two straight lines are also drawn, the length is moderate, (because of the length of the middle segment The degree can be made by the latter part of the drawing process Sure)
1, the new file, then open the layer manager (" LA ") and two new layer (layer contour line/line 5 mm wide, the center line of the layer/line width 2.5 mm/linear). Modify the default annotation style (shortcut "D") to enter the annotation style to modify the interface and click "modify" and then set the Settings for each of these: Line: the baseline spacing (8), beyond the dimension line (3), and the starting point bias Shift (0) Symbols and arrows: arrow size (3), center (no) Text: text (usually set to 3.5 depending on the size of the graph), From size offset (1), text alignment (ISO standard) Main unit: accuracy (0), decimal separator (period). The other items need not be modified.
First of all, A is A supplementary circle with A radius of 60, which is the intersection point of the horizontal center line of the lower end C, and then C is the circle with a radius of 40. Let's draw the radius of B as the radius of 71 and draw the auxiliary circle The horizontal center line of the upper end is D, and then D is a circle with a radius of 23. Then choose "Tangent, tangent, radius" draw the circle of radius 4. Finally, use the pruning tool "TR" pruned the extra round to the drawing of the figure. Note: directly using the label of the label, the line, the diameter, the arcs will be finished The graph is labeled. The position of A, B, C, and D is shown in the diagram below. I'll make the width of the line wide, and click on the image magnifying point to see clearly.
