Setup Options for Transfer Die
This section covers Transfer Die setup options. These are available from the process tree’s top-level node.
The following options control the addition of extra space (for various purposes) around the flattened part:
Width of Addendum Added to Blank Size [per side]: adds material for holding during stamping (or compensates for underestimation of flattened-part size).
Edge Margin Width and Part Spacing Width: adds space for cutting a part without damaging adjacent parts
The following options control the layout and orientation of blanks during offline blanking:
The following options each control both extra space and blank orientation during offline blanking:
The following options constrain stock width; parts fail to cost if they require stock that doesn’t meet these constraints:
The following options control the layout and orientation of blanks in the transfer press:
The following options affect operation assignment:
The following options control whether the sale of scrap should be assumed in material cost calculations:
A number of additional options are also provided—see below.
Evaluate Strip Nesting Layout: 1 Out
By default aPriori evaluates the cost of performing Offline Blanking with a 1-out layout only. You can override the default, and tell aPriori to evaluate the cost of other layouts as well by selecting Yes for one or more of the Evaluate Strip Nesting Layout… setup options. aPriori will choose the lowest-cost layout.
If you do not want a 1-out layout to be considered, select No for this setup option.
If you are using Rectangular Nesting (see Material Utilization and Part Nesting for Transfer Die), and you select Yes for this option, all Evaluate Strip Nesting Layout: 2 Out… setup options must be set to No (or the part will fail to cost).
Evaluate Strip Nesting Layout: 2 Out, Non-Interlocking, Mirrored
By default aPriori evaluates the cost of performing Offline Blanking with a 1-out layout only. You can override the default, and tell aPriori to evaluate the cost of other layouts as well by selecting Yes for one or more of the Evaluate Strip Nesting Layout… setup options. aPriori will choose the lowest-cost layout.
Select Yes for this setup option to include evaluation of a 2-out, non-interlocking, mirrored layout. See Interlocking and Non-interlocking Layouts.
If you are using Rectangular Nesting (see Material Utilization and Part Nesting for Transfer Die), and you select Yes for this option, Evaluate Strip Nesting Layout: 1 Out must be set to No (or the part will fail to cost).
Evaluate Strip Nesting Layout: 2 Out, Non-Interlocking, Rotated
By default aPriori evaluates the cost of performing Offline Blanking with a 1-out layout only. You can override the default, and tell aPriori to evaluate the cost of other layouts as well by selecting Yes for one or more of the Evaluate Strip Nesting Layout… setup options. aPriori will choose the lowest-cost layout.
Select Yes for this setup option to include evaluation of a 2-out, non-interlocking, rotated layout. See Interlocking and Non-interlocking Layouts.
If you are using Rectangular Nesting (see Material Utilization and Part Nesting for Transfer Die), and you select Yes for this option, Evaluate Strip Nesting Layout: 1 Out must be set to No (or the part will fail to cost).
Evaluate Strip Nesting Layout: 2 Out, Interlocking, Mirrored
By default aPriori evaluates the cost of performing Offline Blanking with a 1-out layout only. You can override the default, and tell aPriori to evaluate the cost of other layouts as well by selecting Yes for one or more of the Evaluate Strip Nesting Layout… setup options. aPriori will choose the lowest-cost layout.
Select Yes for this setup option to include evaluation of a 2-out, interlocking, mirrored layout. See Interlocking and Non-interlocking Layouts.
If you are using Rectangular Nesting (see Material Utilization and Part Nesting for Transfer Die), and you select Yes for this option, Evaluate Strip Nesting Layout: 1 Out must be set to No (or the part will fail to cost).
Evaluate Strip Nesting Layout: 2 Out, Rotated, Interlocking
By default aPriori evaluates the cost of performing Offline Blanking with a 1-out layout only. You can override the default, and tell aPriori to evaluate the cost of other layouts as well by selecting Yes for one or more of the Evaluate Strip Nesting Layout… setup options. aPriori will choose the lowest-cost layout.
Select Yes for this setup option to include evaluation of a 2-out, interlocking, rotated layout. See Interlocking and Non-interlocking Layouts.
If you are using Rectangular Nesting (see Material Utilization and Part Nesting for Transfer Die), and you select Yes for this option, Evaluate Strip Nesting Layout: 1 Out must be set to No (or the part will fail to cost).
Interlocking and Non-interlocking Layouts
Double-row blank layouts can be either interlocking or non-interlocking. With non-interlocking layouts, the rows do not overlap in the width direction, that is, there is a line along the coil pitch direction such that one row is entirely above the line and the other row is entirely below the line. The image below shows a rotated, non-Interlocking layout; the top row is entirely above the green line, and the bottom row is entirely below the green line:
With interlocking layouts, the rows can overlap in the coil width direction. The image below shows a rotated, interlocking layout; there is no line in the pitch direction such that the top row is entirely above the line and the bottom row is entirely below the line:
 
Blank XY Orientation within Part Strip
With true-part nesting (see Material Utilization and Part Nesting for Transfer Die), specifies how aPriori will determine the blank’s angle within the part strip. The first two options attempt to find the angle that optimizes material utilization; the third option allows the user to specify the angle explicitly. Select one of the following options:
Determine Angle optimizing utilization, using default increment: specifies the part rotations aPriori considers in order to optimize nesting. aPriori considers non-negative, whole number multiples of defaultIncrementAmoiunt that are less than 360 degrees. defaultIncrementAmount is a cost model variable that is set to 5 in aPriori starting point VPEs.
Determine Angle optimizing utilization, using specified increment: specifies the part rotations aPriori considers in order to optimize nesting. aPriori considers non-negative, whole number multiples of this value that are less than 360 degrees. With a value smaller than the default, costing will be slower, but utilization might increase.
Specify Angle [0 = lengthWise, 90 = widthWise]: specifies the part angle within the part strip.
Number of Concurrent Parts in Transfer Press
By default, aPriori’s strip nesting calculations determine whether 1 or 2 parts are stamped at a time. You can specify the number of concurrent parts explicitly with this setup option. Select one of the following:
1
2
Determine Transfer Pitch Based on:
By default, in order to minimize transfer pitch, aPriori orients the blank in the transfer press so that the width of the SWER (smallest-width enclosing rectangle--see Blank GCD) is parallel to the transfer pitch direction.
You can override the default, and specify that aPriori should base the transfer pitch on the SER, or specify that aPriori should base the transfer pitch on the SWER only if SER and SWER differ significantly. Select one of the following:
Blank SWER: always base transfer pitch on SWER, regardless of whether SWER and SER widths differ significantly. This is the default.
Blank SER: always base transfer pitch on SER, regardless of whether SWER and SER widths differ significantly.
Let aPriori Decide: base transfer pitch on SWER, assuming the SER and SWER differ significantly in width. If the SER and SWER don’t differ significantly in width, base transfer pitch on SER. The SWER and SER widths are considered to differ significantly if the percentage difference between them is greater than the cost model variable transferPitchSwerWidthThreshold (1% in starting point VPEs).
Blank XY Orientation within the Transfer Press
By default, the blank is oriented in the transfer press so that the MainSurface’s East direction is up (if the pitch direction is left-to-right). The MainSurface’s East direction is listed in the Geometric Cost Drivers pane under the property East Direction (if transfer pitch is SER-based) or SWER East Direction (if transfer pitch is SWER-based)—see Determine Transfer Pitch Based on:.
You can override the default, and align the MainSurface’s East direction with a different direction within the transfer press. Select one of the following from the Transfer Press Blank Orientation dropdown list:
right
up
left
down
Blank Pitch
Blank pitch is the extent of the flat pattern (with addendum, if any) along the direction of coil flow for offline blanking, supplemented by the part spacing width. By default, this is calculated using aPriori’s strip nesting algorithm. The default value is the sum of the following:
Extent of the flat pattern (with addendum, if any) in the direction of coil flow, when best nested (as determined by the aPriori strip nesting algorithm)
Part Spacing Width
You can override the default with this option, which affects both material utilization and tooling sizes and costs. It is your responsibility to ensure that the overrides have legal results, for example, that the resulting blanks do not overlap.
Select one of the following options:
Default: calculated by aPriori (as described above)
User Override: enter a value in millimeters or inches that is greater than or equal to 1.0 mm.
Coil Width
Coil width is determined by the extent of the flat pattern (with addendum, if any) in the direction perpendicular to the coil flow for offline blanking, supplemented by edge margins, as well as (for 2-out parts) part spacing width. By default, this is calculated using aPriori’s strip nesting algorithm.
The default value for a 1-out layout is the sum of the following:
Extent of the flat pattern (with addendum, if any) in the direction perpendicular to the coil flow, when best nested (as determined by the aPriori strip nesting algorithm)
2 * Edge Margin Width
The default value for a 2-out layout is the sum of the following:
2 * Extent of the flat pattern (with addendum, if any) in the direction perpendicular to the coil flow, when best nested (as determined by the aPriori strip nesting algorithm)
2 * Edge Margin Width
Part Spacing Width
You can override the default with this option, which affects material utilization, as well as tooling sizes and costs. Note that coil width is constrained by the setup option Minimum Strip Width.
Select one of the following options:
Default: calculated by aPriori (as described above)
User Override: enter a value greater than or equal to 0.
Width of Addendum Added to Blank Size [per side]
An offset to be added all around the perimeter of the flattened part.  You can enter a non-zero value in order to do one of the following:
Add additional material for the purpose of holding the blank during the stamping process, which is subsequently trimmed away.
Compensate for cases in which aPriori underestimates flattened blank size, for example, for highly deformed parts. 
Select one of the following options:
No Addendum: this is the default.
Computed Based on Form Depth: derived from the lookup table blankAddendumWidth.
User Override: enter a value greater than or equal to 0.
Edge Margin Width
This option specifies the width of the extra space between the coil edge and the flat pattern. In aPriori starting point VPEs, the default value is 1.5 times the material thickness. VPE administrators can customize the thickness multiplier with the cost model variable defaultEdgeMarginWidthMultiplier.
Select one of the following options:
Default: in aPriori starting point VPEs, the default value is 1.5 times the material thickness. VPE administrators can customize the thickness multiplier with the cost model variable defaultEdgeMarginMultiplier.
User Override: enter a value greater than or equal to 0.
Part Spacing Width
Width of extra space between adjacent blanks. This value specifies both the distance between blanks in the coil pitch direction, as well as the distance in the coil width direction between rows of a 2-out layout. In aPriori starting point VPEs, the default value is 1.5 times the material thickness. VPE administrators can customize the thickness multiplier with the cost model variable defaultPartSpacingWidthMultiplier
Select one of the following options:
Default: in aPriori starting point VPEs, the default value is 1.5 times the material thickness. VPE administrators can customize the thickness multiplier with the cost model variable defaultPartSpacingMultiplier.
User Override: enter a value greater than or equal to 0.
Heat Treat of Die Components
Die components are heat treated by default. This option provides a dropdown list with the following items:
Yes: perform heat treatment.
No: do not perform heat treatment.
To override heat treatment, select No from the dropdown list.
Plating of Die Components
By default, the material used for die plating depends on the base tool material (see Base Tool Material). High-strength materials use the plating specified by the cost model variable highStrengthMatlToolingCoatingType (DuplexVariantic in starting point VPEs). Base material S7 uses Nitride plating. Base material D2 uses CVD plating. Any other base material uses the plating specified by the cost model variable defaultToolingCoatingType (Nitride in starting point VPEs).
High-strength material is defined as material with a tensile yield strength of 344.74 Mpa in starting point VPEs. VPE administrators can customize this threshold with the cost model variable highStrengthMatlThreshold.
To specify plating material explicitly, select one of the following options:
None
Nickel
Chrome
Nitride
Teflon
Tribo-Coating
DuplexVariantic
CVD
Base Tool Material
This is used to determine tool plating costs. By default, base tool material is S7. To specify base tool material explicitly, select one of the following options:
D2
A2
S7
Stamp Assembly Qty
Select one of the following options:
Default: specified by the cost model variable defaultStampAssemblyQty.
User Override: enter a value greater than or equal to 0.
Number of 150, 300, 600, 800, 1000, 1200 Series Cam Units
Select one of the following options:
Default
User Override: enter a value greater than or equal to 0.
Freight Cost
Freight cost applied to tooling defaults to 0. To explicitly specify a tooling freight charge, enter a value greater than or equal to 0.
Total Carrying Cost
This is the cost for holding the completed tool in inventory prior to shipping. Total carrying cost applied to tooling defaults to 0. To explicitly specify a tooling carrying cost, enter a value greater than or equal to 0.
Total Gage Cost
Total gage cost applied to tooling defaults to 0. To explicitly specify a tooling gage cost, enter a value greater than or equal to 0.
Total Welding Cost
Total welding cost applied to tooling defaults to 0. To explicitly specify a tooling welding cost, enter a vale greater than or equal to 0.
Maximum Strip Width
If aPriori calculates a required width (see Coil Width) that is greater than this value, the part fails to cost. In aPriori starting point VPEs, the maximum allowable strip width is 1828.8mm, by default. VPE administrators can customize the default with the cost model variable maximumStripWidth. You can override the default for the current part with this setup option. Select one of the following:
Default
User Override
Minimum Strip Width
This value constrains the choice of material stock. If aPriori calculates a required width (see Coil Width) that is less than this value, this value is used instead of the calculated value in order to determine material and tooling costs.
By default, the minimum allowable strip width is the calculated required strip width. You can override the default for the current part with this setup option. Select one of the following:
Default
User Override
Blank Cutting Method
Do not use this setup option with starting point VPEs. The starting point model assumes that blanking is done offline, on a separate machine. The VPE can be configured for inline blanking—please contact aPriori Support or your aPriori Account Manager. A future release will add out-of-the-box support for inline blanking.
Enable SCORING Operations for Bends
In aPriori Starting Point VPEs, bends are not scored by default. VPE administrators can customize the default with the cost model variable defaultEnableScoringSetting. You can override the default with this PSO. Select one of the following options:
Default: specified by the cost model variable defaultEnableScoringSetting (No in aPriori Starting Point VPEs).
User Override: select Yes or No.
Direct Trim Angle Threshold
Do not use this setup option.
Enable In Die TAPPING operations
In aPriori starting point VPEs, in-die tapping is not enabled by default. VPE administrators can customize the default with the cost model variables defaultEnableInDieTapping. You can override the default with this PSO. Select one of the following options:
Default: specified by the cost model variables defaultEnableInDieTapping (No in aPriori starting point VPEs).
User Override: select either Yes or No.
Enable COINING Operations for SimpleHoles
In aPriori Starting Point VPEs, flanged, threaded holes are not coined, by default. VPE administrators can customize the default with the cost model variable defaultEnableCoiningSetting. You can override the default on a per-part basis with this PSO. Select one of the following options:
Default: specified by the cost model variable defaultEnableCoiningSetting (No in aPriori Starting Point VPEs).
User Override: select Yes or No.
Enable SHAVING Operations for SimpleHoles
In aPriori Starting Point VPEs, flanged, threaded holes are not shaved, by default. VPE administrators can customize the default with the cost model variable defaultEnableShavingSetting. You can override the default with this PSO. Select one of the following options:
Default: specified by the cost model variable defaultEnableShavingSetting (No in aPriori starting point VPEs).
User Override: select Yes or No.
High Strength Material Derate Percentage
This setup option can affect the number of occurrences of the Draw operation required to produce a given form. Use this to override the default behavior for parts that use high-strength material. Increasing this value can increase the number of draws.
The number of draws required for deep, primary forms or curved bends is calculated based on the form width reduction produced by each draw. The lookup table drawReductionPrecentage lists the percentage of the pre-draw width that remains after a given draw (that is, initial draw, first subsequent draw, second subsequent draw, or third subsequent draw) for a given material thickness. For example, for the second subsequent draw of 1-inch-thick material, the table lists 81%. This means that the second subsequent draw (for 1-inch-thick material) results in a width that is 81% of the form’s width immediately prior to that occurrence of the draw operation.
For high-strength materials, the percentage listed in the lookup table is itself increased by 10 percent, by default in starting point VPEs. For example, for the second subsequent draw of 1-inch-thick material, the table value of 81% is increased by 10 percent to 81.8%, for high-strength material. VPE administrators can customize the 10 percent default with the cost model variable highStrengthMatlDeratePercent. You can override the default on a per-part basis with this PSO.
High-strength material is defined as material with a tensile yield strength of 344.74 Mpa in starting point VPEs. VPE administrators can customize this threshold with the cost model variable highStrengthMatlThreshold.
Select one of the following options:
Default: specified by the cost model variable highStrengthMatlDeratePercent (10% in aPriori starting point VPEs).
User Override: enter a value between 0 and 100.
Part Height Allowance
This setup option specifies the difference between the part height and the height of the post component of the die. The default Part Height Allowance is specified by the cost model variable partHeightAllowance (12.7mm in starting point VPEs). Note that the post height is constrained by the value of Minimum Part Height Plus Allowance. That is, the post height is either the sum of the part height and Part Height Allowance, or the value specified by Minimum Part Height Plus Allowance, whichever is greater.
Post height affects die height. Die height (which affects tooling cost and machine selection) is the sum of the following:
Product of post height and Post Height Multiplier
Die allowance gap (specified by the cost model variable dieAllowanceGap—25.4mm in starting point VPEs)
Lower die shoe height (selected from standard shoe sizes based on blank and addendum size, as well as on whether the part has a drawn primary form, in addition to )
Upper die shoe height (selected from standard shoe sizes based on blank and addendum size, as well as on whether the part has a drawn primary form)
Select one of the following:
Default: specified by the cost model variable partHeightAllowance (12.7mm in starting point VPEs)
User Override: enter a value.
Minimum Part Height Plus Allowance
This setup option constrains the height of the die post. The post height is either the sum of part height and Part Height Allowance, or the value specified by this option, whichever is greater. Select one of the following:
Default: specified by the cost model variable minimumPartHeightPlusAllowance (50.8mm in starting point VPEs)
User Override: Enter a value greater than or equal to 0.
Post Height Multiplier
Specifies the number of posts that contribute to the die height. Die height, which affects tooling cost and machine selection, is the sum of the following:
Product of post height (see Part Height Allowance) and Post Height Multiplier
Die allowance gap (specified by the cost model variable dieAllowanceGap—25.4mm in starting point VPEs)
Lower die shoe height (selected from standard shoe sizes based on blank and addendum size, as well as on whether the part has a drawn primary form, in addition to )
Upper die shoe height (selected from standard shoe sizes based on blank and addendum size, as well as on whether the part has a drawn primary form)
Select one of the following:
Default: specified by the cost model variable postHeightMultiplier (1 in starting point VPEs)
User Override: enter a value greater than or equal to 1.
Enable Auto-Inclusion of IDLE Stations
By default, aPriori never includes IDLE stations in Transfer Die routings. With this setup option, you can enable the inclusion of die stations when aPriori deems them necessary.
With auto-inclusion enabled, aPriori may insert one or more IDLE stations to make room for cams. For example, an idle station may follow a cam trimming station if the trimmed edges require cams that are on the side of the part. Without auto-inclusion, aPriori assumes that the cams can be situated within the extent of the transfer pitch.
When an idle station is included, it compensates for the fact that a cam station’s die shoe width (plus inter-die spacing) exceeds the transfer pitch. The idle station die shoe width (plus inter-die spacing) is the transfer pitch minus the extra width required for the cams. Transfer pitch is the blank pitch—see Blank Pitch—plus twice the value of the cost model variable dieShoeWidthAllowance (203.2mm in starting point VPEs), plus the value of the cost model variable interDieSpacing (25mm in starting point VPEs).
Idle stations have no associated operations, and so are not expandable/collapsible in the Process Manufacturing pane; they are recognizable by the absence of a plus sign, , or minus sign, .
Select one of the following options:
Default: No (IDLE stations never included)
User Override: select Yes or No from the dropdown list. (Yes enables auto-inclusion.)
Number of Shear Planes
By default in starting point VPEs, shear force is calculated on the assumption that cluster punching is not used (that is, on the assumption of a single shear plane, with all GCDs pressed at the same time). VPE administrators can customize the default number of shear planes with the cost model variable numShearPlanes. In addition, users can override the default on a per-part basis with this setup option.
Multiple shear planes indicate the use of cluster punching, with different groups of GCDs pressed in a staggered fashion, rather than simultaneously. Required press force decreases as the number of shear planes increases. A decrease in required press force can sometimes lower costs due to selection of a lower-overhead machine.
Enable Scrap Material Credit
By default in starting point VPEs, the cost model assumes that material scrap (such as trim scrap) is not sold for credit. Administrators can customize the default with the cost model variable enableScrapMaterialCredit (false in starting point VPEs). With this setup option, users can override the default on a per-part basis.
Enabling scrap material credit increases material utilization and decreases material cost. The credit rate is specified as a percentage of the material rate by the material property Scrap Cost Percent.
Enable Scrap Part Credit
By default in starting point VPEs, the cost model assumes that the material from scrapped parts is not sold for credit. Administrators can customize the default with the cost model variable enableScrapPartCredit (false in starting point VPEs). With this setup option, users can override the default on a per-part basis.
Enabling scrap part credit increases material utilization and decreases material cost. This includes credit for parts scrapped by this process as well as by downstream processes. The credit rate is specified as a percentage of the material rate by the material property Scrap Cost Percent.
Coating of Tooling
Default tool coating is Nitrided Steel. With this setup option, users can override the default on a per part basis, and choose from among the materials defined in the lookup table tblToolCoating.
Tooling Material
Default tool material is specified by the tool shop variable Default Tool Material. With this setup option, users can override the default on a per part basis, and choose from among the materials defined in the tool shop.