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Robotic Arm

هذا الموضوع : Robotic Arm داخل فن التحريك وصناعة الانيميشنالتابع الي قسم 2D Programs-Video Edit : In this tutorial you will learn the basics of animating a robotic arm using Link constraints. The Link constraint causes ...

  1. #1
    الصورة الرمزية ammarkhatib
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    Robotic Arm

    In this tutorial you will learn the basics of animating a robotic arm using Link constraints. The Link constraint causes an object to inherit the position, rotation, and scale of its target object. You can start by downloading this scene already created for you. I won't go into modeling in this tutorial, but all geometry has intact modeling stack (Max version 9) so you can get an idea about how it was created. Before linking and animation you need to set the pivot points right. In this case all pieces have the pivot points in the correct position (usually the joint to the linked object) except for one for tutorial purposes. Select the piece highlighted in the image above. Go to the Hierarchy panel and, under Adjust Pivot rollout, hit Affect Pivot Only. Then move the pivot down until it fits the joint to the object below (about 140 on the Z axis). Get out of pivot editing mode by going to the Modify panel. You'd have to do this for each piece of your robotic arm, but the downloaded scene already has all other pivots set in the right place.
    As you can see, if we rotate the object, it turns around the joint to the bottom piece. The top part of the robotic arm is separated, but this is what we have to take care of over the next steps. The linking procedure is not difficult. You'll find yourself repeating a few steps for each segment of the arm. Let's start with the "claw". Select it, go to the Motion panel and open the Assign Controller rollout. Select the Transform: Position/Rotation/Scale controller (1) and then click the Assign Controller button (2).
    In the Assign Transform Controller pick Link Constraint and hit OK. Under the Link Params rollout hit Add Link and click the small cylinder under the claw. You can see the cylinder has been added to the links list below. Click Add Link again to stop adding links for the current piece.
    Now click on the small cylinder to select it and repeat the previous 4 steps. Link it to the box right under (Box03). Following the same procedure, link Box03 to Box02. And link Box02 to Box01.

    Now as we rotate the Box01 object (which is not the bottom support, but the bottom piece of the robotic arm) you can see the whole arm rotates with it. That means everything is linked as it should be. Let's animate the thing. Go into Auto Key animation mode. Select Box02. Follow these steps in order: press Set Key (1); move the current frame slider to frame 15 (2); rotate the object 45 degrees towards you (3). For added precision use angle snap (a) (shortcut: A) and set the axis to Local (b). A key will be created automatically (4).
    Next let's animate the forearm. First select it then set a key at its current position and timeline (1). Move the slider to about frame 30 (2). Rotate the forearm 45 degrees (3). A key is automatically generated at the current frame. You can now continue to create your own animation since it consists of repeating these steps for each animation segment:
    1) Select the object you want to animate
    2) Set a key to its current state at the frame where you want the animation segment to begin
    3) Move the timeline slider to the frame where you want the animation segment to end
    4) Move/rotate the object in the new position. A new key for the selected object will be set automatically at the new frame. To create a claw rotation I recommend you to rotate the small cylinder especially if you assign materials to your objects. You can preview your animation at any time by exiting the animation mode(1) and hitting the Play Animation button(2). Hope you liked this tutorial. Now that you know the basics it's up to you to create really impressive motion of your robotic arm. Later we will learn more about constraints so our objects will only be allowed to move only in the specified directions.


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    الصورة الرمزية husamdabbagh
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    الصورة الرمزية ammarkhatib
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