Engineering Talk - DCS's Blog on Quality and Engineering

Upcoming Webinar - Pattern Move -- Setting Patterns of Holes and Pins and Then Some

Pattern Move - Floating & Fixed Fasteners, Gravity, Partial Pin, all with Model Variants 

FREE Webinar January 31st, 2018
 
DIGITAL GD&T SERIES PART 6
 
Looking for the First 5 Parts? Look no further, here they are: https://www.3dcs.com/technical-support/dcs-webinars-on-demand
 
Digital GD&T Part 6 - Pattern Move
 
Learn from Gary Bell, Senior Variation Analyst, as he demonstrates the Pattern Move and its many applications:
 
  • Pattern Move Basics 
    • How to validate your Pattern Moves
    • Effects of using Pattern Move with Points or Features
  • Floating Fastener - Common and Multiple Pins
  • Floating using traditional moves incorporating iteration move
  • Gravity Move (Pattern Rigid)
  • Partial Pin Move

When: Thursday, January 31st at 11 am EST

Register: https://register.gotowebinar.com/register/4757837893591746561

 

-- Review on Creating a Pattern Move -- 

Excerpt from the DCS Training Manual

We will use the Pattern Rigid Move to remove the interference between the Turnlamp pins and the Bracket holes. The purpose of the Pattern Rigid Move is to assemble two rigid parts that use patterns of pins and holes as the secondary and tertiary locators. When Nominal Build is performed, the move routine will fit together the patterns of holes and pins.

Since the Pattern Rigid Move is locating only the secondary and tertiary locators, a preliminary move is first needed to move the object part primary locators to the target part primary locators. This can be done with a preliminary move such as a Step Plane Move which we already have for the Turnlamp.

  • Click the DVTI_movelist Moves button then select the Lamp_SubAsmLamp_SubAsm_Lesson8.
  • Select Pattern Rigid from the drop-down list next to [Add Analyst].

Selecting Pattern Move - 3DCS

Choosing Pattern Move -- 3DCS MC

Click [Add Analyst]. This will open the Pattern Rigid Move dialog.

Select Features - Pattern Move 3DCS CATIA

Selecting Features 3DCS MC

  • Change the Name to "Turnlamp_to_Bracket_Pattern".
  • Add the Description of "4way, 2way, and clearance hole and pin pattern."
  • Set the Type to Fixed Fastener.
  • Select the Feature tab.
  • Under Object Features, select Click to Add[ + ].

Select Add Feature - 3DCS Pattern Move

  • Select the features TurnLp_YZ, TurnLp_Y, and TurnLp_Clear in the Turnlamp.
  • Click [OK][Close] to close the Pick FeatureSelect dialog.
  • Under Target Features, select Click to Add[ + ].
  • Select the features TurnLp_YZ, TurnLp_Y, and TurnLp_Clear in the Bracket.
  • Click [OK][Close] to close the Pick FeatureSelect dialog.

 The Feature tab should look like the following image.

Feature Tab - 3DCS Pattern Move

  • Select the Direction tab.
  • Set the Dir. Type to AssocDir.
  • Select the Move Parts tab.
  • Verify the Turnlamp is in the Move Parts list.
  • Click [OK] to save the move and close the dialog.
  • Click [OK] to close the Moves dialog.
  • Select DVTI_dcsNominalBuild_SP Nominal Build then DVTI_Run_Analysis Run Analysis.
  • Set the Total Runs to 2000.
  • Check the box for Retain Failed Assemblies in Statistics.

Tips when running analysis -- 3DCS Pattern Move

Click [Start>>].

Learn more about the Pattern Move on the DCS Community at: 

https://community.3dcs.com/help_manual/v5createapatternmove_2.htm?zoom_highlightsub=pattern+move

Register FREE -- DCS Digital GD&T Series

Don't forget to register for this month's webinar to learn more about the Pattern Move in 3DCS Variation Analysis Software

Digital GD&T Series Part 6 - Pattern Move

Topics: CATIA 3DCS Tolerance Analysis CATIA V6 Webinar Siemens NX 3DCS Creo PTC Creo