Eastec Demonstration Walkthru

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Eastec DemonstrationWalkthru
Martin Hardwick David Loffredo info_at_steptools.com
STEP-NC Manufacturing Center Watervliet
Arsenal, Building 20 Metal Processing
Manufacturing Division Watervliet, New York
12189 [phone] / [phone]
fax http//www.steptools.com
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Eastec demonstration walkthru

• Stage 0
• Export Part model from UGS NX
• Stage 1
• Roughing operation from UGS NX
• Stage 2
• Probing operation from Mastercam
• Stage 3
• Probing results from DMG
• Stage 4
• CNC Tool diameter compensation
• Stage 5
• Finish operation from Mastercam

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Stage 0 Export part model

• Export model as STEP AP-203 CAD file
• Read model into compositor

AP-203
testpiece.stp
AP-203
UGS
Compositor
Compose data for CNC
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Model in UGS (Pratt and Whitney test part)
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Header of STEP File
testpiece.stp
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STEP File in compositor
We are going to machine this boss
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Stage 1 Export Roughing operation

• Tool paths in UGS NX
• AP-238 CC1 file containing the tool paths
• AP-238 CC1 added to AP-203 in Compositor
• AP-238 CC2 sent to the Converter for machining

AP-203
AP-238 CC1
AP-238 CC2
Converter on CNC
UGS
Compositor
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Toolpaths in UGS NX
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Header of AP-238 CC1 STEP File
stage 1.stp
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AP-238 CC1 file added to Compositor
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Siemens codes generated by the converter
stage1.mpf
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Stage 2 Export probing operation

• Probing operation in Mastercam
• AP-238 CC1 file exported from Mastercam
• AP-238 CC1 file in Compositor
• Siemens codes

AP-203
AP-238 CC1
AP-238 CC2
Converter on CNC
Mastercam
Compositor
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Probe data in Mastercam
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AP-238 CC1 Probe file
stage 2.stp
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Probe data in compositor
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Siemens code generated by converter
stage2.mpf
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Stage 3 Read probe results into compositor

• Probe results as produced on DMG machine
• Probe results merged into the AP-238 CC2 file

AP-238 CC2
AP-238 CC2
Converter on CNC
Compositor
probelog.txt
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Probe results produced on the DMG
probelog.txt

• DMG machine uses metric units
• Pratt and Whitney test part uses inches
• Converter converts between the units

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AP-238 CC1 probe results
stage 3.stp

• In stage 2.stp entity 177 has a NULL initial
  value

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Stage 4

• Set value of compensation register
• We could decide this in a CAM and send new
  toolpaths
• We could decide this in the converter using a
  STEP-NC expression
• Instead we let the operator set the value using a
  window in the compositor
• Value sent as a STEP-NC register assignment

Operator
AP-238 CC1
Converter on CNC
Compositor
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AP-238 CC1 file sent to the converter
stage 4.stp
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Stage 5 Final finish using compensation

• Mastercam with cutter compensation
• AP-238 CC1 data with cutter compensation
• Siemens codes generated by converter

AP-238 CC1
AP-238 CC1
Converter on CNC
Mastercam
Compositor
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Mastercam data
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AP-238 CC1 file with cutter compensation
stage 5.stp

• Surface normal describes left or right

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CC1 tool path in compositor
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Siemens codes
stage5.mpf
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Final assembly

• We can assemble a STEP file to record all the
  operations executed on the machine
• UGS NX data for the roughing
• Mastercam data for the probing
• DMG probe results
• Cutter compensation assignment
• Mastercam data for the final finish

AP-238 CC2
Compositor
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Final assembly data in compositor
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AP-238 CC2 data for final assembly
final assembly.stp
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More information

• See