Archive for March 2016

Tutorial Unigraphics Creating a positioned 2D sketch

Creating a positioned sketch Unigraphics enables you to define explicitly the position of the sketch absolute axis. This offers the following advantages: When the geometry of the part evolves and the associated position of the sketch changes, the shape of the sketched profile (2D geometry of the sketch) remains unchanged (even if the sketched profile is under-constrained). Creating a positioned sketch also ensures associativity with the 3D geometry. Open the Positioned_sketch.CATPart document. You will now create a positioned sketch that will enable you to design the retaining bracket for this part. You will position the sketch absolute axis as follows: its origin will be on the axis of revolution, its horizontal (H) direction will be parallel to the flat face, its vertical (V) direction will be normal to the flat face. Make sure the Reference field is active, and select the blue surface (Shaft.1). The Sketch Positioning dialog box is updated: the Reference field now indicates the reference plane. Also, the Type fields of the Origin and Orientation areas are activated and the Implicit mode is pre-selected. Steps by steps tutorial : Open the file that will be modified. Modeling Run, application and create a layer Iayer work. Create a new sketch. - Select Sketch. - Click on the name of the sketch - Choose the face parts to be modified. By selecting the face on the top, the positive direction will lead XC pad away from the pointed end. Select OK. If our view is not visible, choose File-> Close-> Reopen Selected Parts. select Profile Make sure the list. Constraints to be set to All in Sketch On, Constraint Type is set to All, and Show Constraints set to explicit. There should be one horizontal and one vertical constraint Select Cancel. Constrained sketches. In the design, size must be controlled by determining the length of the horizontally and vertically. Select Dimensions. Select the horizontal line and place the dimension. Change the value and Enter.

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Rotate Object or Part in 3D Unigraphics

If we need to rotate our object or part in 3D Unigraphics, they are some way to rotate an object in Unigraphics, the basic principle is, point that we select will become point reference (0,0,0) than two axes selected become direction, at this video sample Y and Z, axis that does not selected will become rotation axis (at this example X axis) To rotate the object, we can use use a mouse, by press and hold the middle mouse button, then drag. or use the View Rotate Dialog Select View > Operations > Rotate. Select one option Fixed Axis. Move the cursor rotation to the view that we want. Pull the saw while you press and hold MB1. When we draw, look revolves around a particular axis and the scroll bar on the View Rotate dialog displays the values ​​corresponding to the rotation. Rotating About an Alternative Center Rotation When rotating the display using the mouse, the system usually rotates the view about the center. we can also determine the center of rotation relative to the model. Use this feature to rotate about the destination or the position of the screen that may not be near the center of the display. Turning point applies only to look at where we define it. we can determine the point of a different play for each view. The system maintains each display point in playing per session. Rotate the point set remains in effect until removed. Alternative Clearing Center Rotation To remove the center of rotation: With the cursor in the desired view, select Clear Play Point from the pop-View and the step to rotate using two axis, select object , then click OK, select rotate by two axes, select the point, select first axis, then click OK, select second axis, click ok, fill the angle that you want rotate, click copy or move.

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Autocad Tutorial The Drawing Units Setup

The drawing units setup, the metric method of measurement, known as the International System of Units or SI, was originally set up in 1960 to address the issue of a number of diverging metric systems and to coordinate and standardize those systems. Most metric drawings and/or models use kilometers, meters, and millimeters, where one kilometer = 1,000 meters, and one meter = 1,000 millimeters. 
We must determine the value of the units in meters, centimeters or millimeters.
Steps should we do in setting the size of a unit in AutoCAD is:
1. Type in the command line: Units
2. Drawing Units dialog box appears.
3. In the Drawing Units dialog box
Choose type: decimal.
Precision: 0.00,
Units to scale inserted content: millimeters
Units for specifying the intensity of lighting: International.
4. Select OK to exit the Drawing Units Setup box

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