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Ribs and slots sweep planar profiles along ceThe Ribcommand creates material and the Slotcomm

material. These commands are useful for creating stiffeners

on plastic and cast parts. Both dialogs have similar options.

Use ribs and slots when you have features in your model

same cross-section and follow a definite path. This opecommonly used to create features such as strengthening

parts or to create an assembly lip between two plastic parts.

Ribs & Slots

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Creating Ribs & Slots

Profle Control: Specifes how the profle is updated asalong the central curve. The three options available are

Pulling Direction and Reerence Surace.

Keep !ngle" Keeps the angle betweenthe profle s#etch plane and the tangento center curve constant. The ollowingfgure illustrates how sections updatewhile creating ribs.

Pulling Direction"Defnes the directionthe sweep ollows. $ou can pic# anedge, reerence line, or a plane. %oticeall the sections are parallel to thisdirection.

Reerence Surace"Keeps the anglebetween the surace and the 'a(is orthe profle s#etch constant. Theollowing fgures show how the rib twists

and turns as it ollows the suracerofle and #ee s the 'a(is an le

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)erge *nd+s

Close end gaps between theend o the rib along the

central curve- and ane(isting /eometr.

Closes end gapsbetween the rib profle

and an e(isting solidgeometr.

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Sti0ener The Sti0ener unction allows ou to create ribs to help strencast parts

Sti0eners wor# well tosti0en plastic and cast

parts b increasing therigidit o a part withoutincreasing wall thic#ness.

The also helpstrengthen bosses andside walls.

1rom Side 1rom Top

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Solid CombineCreate solid eatures where the profles intersect to adesired shape.

l i i S lid d d

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)ulti'section Solid and Removed )section solid)ulti'sections solids andremoved multi'sections solids

are solids which have varingsections or have sections sweptalong a guide curve. )ulti'sections solids ormerl 2ots-create material, while removedmulti'sections solids removematerial rom an e(isting solid.

3t is e(tremel important thatthe Closing Point in each

section is in the e5uivalent areato prevent the solid romtwisting. !s well as #eepingcontrol over the closing point,manage how the solid behavesbetween sections busing Coupling. The use o aspine curve is optional. 6sing a

spine curve helps control theorientation o the solid as thebod is created. 7hen usingspines, sections are createdperpendicular to the spine curve.

The spine curve can be computergenerated or manuall selected.

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Creating )ulti'Section Solids

Defnes the sections that the solid will pass through. *acontain planar geometr, but the number o geometric section can di0er. owever, it is e(tremel important th

Point in each section is in the e5uivalent area to prevetwisting. Tangenc constraints can be applied to the stasections. To appl such a constraint, pic# the frst or las/raphics window and then pic# a surace to which the stangent at that section.Defnes the path that the solid will ollow betweensections. !s with the start and end sections, ou canappl tangenc constraints to e(isting suraces ateach guide curve.

Defnes orientationo Solids betweensections

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Coupling8oins the sections at e5ual curve ratio points. *achsection is bro#en up into an e5ual number o segmentsthat will 9oin to their e5uivalent segments in the ne(t

section. This fgure shows two arcs and how the wouldbe 9oined using ratio.

Connects points between sections that have tangencdiscontinuit. This option re5uires the same number odiscontinuit points in each section. The ollowingfgure shows tangenc discontinuit points in a section.

Connects points between sections that have curvaturediscontinuit. This option re5uires the same number opoints in each section. The ollowing fgure showscurvature discontinuit points in a section.

Connects points between sections at their vertices. Thisoption re5uires the same number o points in eachsection.

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Relimitation

Defnes how the multi'sections solid stops. 7henone o the options is deactivated, the multi'

sections solid is limited to the length o the userspine or the guide curves. 7hen one o theoptions is deactivated and the spine is computergenerated, then the multi'sections solid is limitedto the start or end section. 3 the two options areactivated, then the multi'sections solid is limitedon the start and end section.Replace Remove Add:2ets ou replace,

remove, or add sections, guides, or couplings.

Smooth Parameters: Smoothes the o thegenerated solid per specifed limits