Help in drawing this two figures

[KharizzaJeh]

i draw the fig. 7.67 again,

Figure 7.67 Locating Finger.dwg

[JD Mather]

When you save a file AutoCAD creates a tiny thumbnail image, that image is not evidence of the vector or solid geometry still existant in the file.

[KharizzaJeh]

Sir, is my drawing correct?

[JD Mather]

Sir, is my drawing correct?

 

Type -dwgunits and then hit Enter.

What does the command line say?

[KharizzaJeh]

Command: -DWGUNITS

Drawing units:

1. Inches

2. Feet

3. Millimeters

4. Centimeters

5. Decimeters

6. Meters

[ReMark]

KharizzaJeh.

 

You need to tell JDM what the last line reads where it says "Unit for length ". If it is 1 or 2 then your drawing was done in imperial units. If it says 3, 4, 5 or 6 it was done in metric units.

[JD Mather]

You didn't post what the command line says (the last line).

 

 

You started from the wrong template and your part is too big.

You will need to scale the part, but

 

the part is also incorrect.

 

 

The center of the R54 is in wrong location.

[JD Mather]

I recommend that you start learning Parametric constraints - a bit clunky in AutoCAD (compared to a modern program like Autodesk Inventor), but will help solve geometry problems like this with more certainty.

(see attached file)

Locating Finger.dwg

[JD Mather]

I thought these would automatically be visable, you will have to Show All on the Parameters tab.

 

Not that you really need parametric geometry constraints.

A trick to and an unknown centerpoint is to draw circle with center at point each point where your desired arc will end (with the desired radius). Where these two circles intersect will be the location of the center of your desired arc (there will actually be two intersections - but it will be obvious which one to use).

Edited March 7, 2013 by JD Mather

[KharizzaJeh]

I learned the constraints its very helpful