Tools Grasping Posture Catalog

Licensing
  The Tools Grasping Posture Catalog is only available with a product license.
This catalog contains postures that are related with the use of several tools and equipments such as grasping, pushing and pulling objects. To reduce the number of posture adjustments, several variations of the same posture are available. Those postures are useful for both beginners and advanced users to save time to posture the manikin using tools.
  For some postures, angular limitations have been changed to obtain an optimal and realistic posture. For example, in order for the manikin to kneel with the buttock against the heels, angular limitations have been edited. In that case, postures were saved with the associated angular limitations in the catalog.
  Most of the postures have been created for a specific percentile (5th, 50th and 95th for man and woman) to avoid self or object collision.
You have the Human Builder product open.

  1. Insert a tools corresponding to the desired grasping posture.

    For example, if you wish to have Hand Drill grasping posture for the right hand with the 5 percentile woman, then you have to insert the tools Hand Drill.

    1. Select Insert > Existing Component.

    2. Select the Product node.

    3. Navigate to intel_a\startup\HumanCatalogs, under the start up directory.

    4. Select the Hand Drill directory, click Open, then select Hand Drill.CATProduct, and click Open.

  2. Open the Tools_Grasping_Postures.catalog, using the steps described in Opening the Standard Human Catalog.

  3. Select right or left arm for the desired posture. For this example, select Right Arm.

  4. Select the percentile closest to the actual percentile of the manikin on to which you wish to paste the the posture.

    For this example, select 5 Percentile_Woman. The posture appears in the right column of the Catalog Browser.

  5. Select the desired posture in Large Icons or Details of the Catalog Browser. In this example, use Hand Drill posture+offset+constraint+attach.

  6. Click on the desired manikin in the specification tree, and click Apply.

  7. Depending on which action(s) you want, take the following action:

    To have the manikin’s hand move to the tool: When the Select object for attaches and constraints dialog box appears, associate the object with only the constraint:

    Click on Constraint in the dialog box and next click on the associate tools in the tree. (For this example, the tools is the Hand Drill.)
    To have the tool automatically placed in the manikin’s hand: When the Select object for attaches and constraints dialog box appears, associate the object with attach:

    Click on Attach in the dialog box and next click on the associate tools in the tree. (If you select both Constraint and Attach, the tool is also automatically placed in the manikin's hand.)
For information on manikin attributes such as attach, constraints, and offset, please see the following procedures in the Human Builder's User Guide > User Tasks:
  • Constraints Attach
  • Attaches Offset
  • Offset
It is important to avoid applying the posture and the constraint without the offset. If only the constraint is applied, the absence of the offset can create a different result from the one expected with the constraint because of the link to it.

Modifying the offset position also modifies the relative position between the segment and the object on which the constraint has been created. For example, a Fix On constraint on the manikin that has a different offset from the one established during the creation of the constraint results in a different position between the object and the segment than the one expected.
  For each tool posture, the right hand and left hand posture is available with the same characteristics. If the posture uses both hands or both arms, one posture is available for the two sides. This posture is in the right and left arm.
  It is important to apply the posture with the tools according to the posture and percentile (50 percentile man, 95 percentile man, and 5 percentile woman) to prevent an unadjusted grip or to avoid having the hand pass through the tool.
  When the user pastes the posture+attach+constraint+offset and tries to use the reach or the inverse kinematics function, you get a confirmation window:
  There is at least one active constraint on this kinematics chain.
Do you want to delete this constraint?

To delete the constraint, click Yes.
To deactivate the constraint, click No.
To keep the constraint active, click Cancel.
  By keeping the attach and clicking:
  • Yes: The selected function (reach or inverse kinematics) works with the tool as a pointer, but the constraint is removed.
  • No: The selected function (reach or inverse kinematics) with the tool as a pointer, but the constraint is deactivated. So, if you need the constraint for a following action, reactivate the constraint in the PPR tree.
    • To reactive the constraint: Double click on the constraint. The Constraint Definition dialog box appears. Select Activate.
  • Cancel: With the reach or inverse kinematics functionality, the hand moves by using the offset as a target. The tool does not follow the movement.
Easy Ergonomics: A Guide to Selecting Non-Powered Hand Tools, DHHS (NIOSH) Publication No. 2004-164, Published by the California Department of Industrial Relations and the National Institute for Occupational Safety and Health, 2004