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Milfab Cam Punch Units

Milfab Cam Punch Units
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Milfab Cam Punch Units

Product catalog summary
Overview: The document provides detailed specifications and features of the Milfab Pos-Z-Cam, a compact positive return cam designed to enhance die runtime and reliability. It highlights the interchangeable components, accuracy, and precision of the cam units.
Key Features:
  • Working ratings range from 5-15 Tons (44-133kN).
  • Mounting options up to 15 degrees.
  • Choice of hard inch or metric dowels, screws, and keyways.
  • Ball lock punch retainment for round and shaped punches.
Material and Construction: Milfab Cam Units use investment cast hardened steel components for consistency and long life. The slide is case-hardened with graphite inserts for self-lubrication.
Mounting and Usage:
  • Large mounting face for punch retainer or custom tooling.
  • Available in standard Inboard, Outboard, and Gas Spring Models.
  • Oil-impregnated bronze bearings are standard on all Top Mount Models.
Selection Guidelines:
  1. Material Thickness: Consult engineering for exceeding rated thickness.
  2. Part Shape: Use Pos-Z-Cams for positive stripping, Inboard Spring for flat parts, Outboard Spring for tubes, and Gas Spring for higher stripping force.
  3. Punch Stroke: Use full stroke for maximum leverage.
  4. Punching Force: Calculated as LC x t x TS ÷ 2000.
  5. Stripping Force: Influenced by metal type, punch size, and other factors.
  6. Point Size and Shape: Must fit maximum point size and shape requirements.
Ordering Information: Specify quantity, cam unit model number, and dimensions for round or shaped holes. Example: KOS125AE, P=.495", W=1.102", oblong.
Specifications and Dimensions: Detailed tables provide specifications for various models, including maximum material thickness, punch stroke, and stripping force.
Design Variations: Describes different design configurations for specific applications, such as multiple punches on common centerlines and high stripping force requirements.
Contact Information: Milwaukee Fabricators, Inc., Menomonee Falls, Wisconsin. Phone: (262) 781-3190, Email: [email protected], Website: www.milfab.com
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Catalog excerpts

Milfab Cam Punch Units -2

PIVOT PIN GREASE FITTING BODY SPRING TRIGGER STRAP BALL LOCK DRIVER Pos-Z-Cam Make long-term die reliability a reality! The Milfab Pos-Z-Cam is a powerful compact positive return cam designed to maximize die runtime. Pos-Z-Cam’s 100% interchangeable components provide unsurpassed accuracy and precision. FEATURES: • Large working ratings from 5-15 Tons (44-133kN) • Option to mount on any angle up to 15 degrees (specify angle when ordering) • Choice of hard inch or hard metric dowels, screws and keyways • Ball lock punch retainment holds round and shaped punches PIERCE CAM 2 PUNCH POSITIVE RETURN...

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Milfab Cam Punch Units -3

PIVOT PIN GRAPHITE INSERTS BODY SLIDE SPRING TRIGGER STRAP FEATURES: • Large mounting face easily accepts punch retainer or other custom tooling • Case hardened slide with graphite inserts provide long lasting self lubrication • Option to mount on any angle up to 15 degrees (specify angle when ordering) The face of the Pos-Z-Cam R-187 is soft for easy mounting of a punch retainer. Milfab Cam Units are in stock for quick delivery and are backed by outstanding service and support! RETAINER CAM 3 DRIVER POSITIVE RETURN TOP PLATE CLAMP POST PUNCH PLATE Milfact:

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Milfab Cam Punch Units -4

Use the standard trigger with a spring return cam unit mounted from horizontal to 15° and an offset trigger when mounted 15° to 60°. PIVOT PIN GREASE FITTING BODY PUNCH SPRING TRIGGER STRAP PUNCH PLATE URETHANE STRIPPER STEEL SPRING WASHER ROD INBOARD SPRING 4 FEATURES: • Urethane stripper and steel washer mounted on punch tip • Internal light-duty compression spring for unit reset • Use on flat surfaces with room for stripper displacement • Maximum point size is less than the punch diameter • Most compact size Milfab’s unique rotary trigger translates the ram’s vertical motion to horizontal...

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Milfab Cam Punch Units -5

OUTBOARD SPRING 5 FEATURES: • External heavy-duty die spring for stripping and unit reset • Use on curved surfaces or tubes • Part must be held for stripping to occur. Use horn, mandrel, etc. Keyed Cam Units have a dual flatted punch head keyed to the punch plate, which is mated to the body. PIVOT PIN GREASE FITTING BODY PUNCH SPRING TRIGGER STRAP SPRING CAGE PUNCH PLATE SPRING ROD LOCK NUT SPRING RETURN Milfact:

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Milfab Cam Punch Units -6

GAS SPRING 6 FEATURES: • Ultra-high stripping forces • External heavy-duty die spring aids stripping and resets unit • Gas spring engages at stroke’s end • Use where large holes or thick, sticky material require large stripping forces • Gas Spring Models are the same size as Outboard Spring Models PIVOT PIN GREASE FITTING BODY PUNCH SPRING TRIGGER STRAP SPRING CAGE PUNCH PLATE SPRING ROD LOCK NUT GAS CYLINDER Tight punch-to-bore tolerance on all cam units and punch-plateto- body tolerance on keyed units assure accurate motion. All Milfab Cam Units include a keyway in the mounting surface to absorb...

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Milfab Cam Punch Units -7

TOP MOUNT 7 FEATURES: • Standard Inboard, Outboard and Gas Spring Models in special Top Mount bodies • Mount to a fixed top place or spring-loaded top die plate • Oil impregnated bronze bearings are standard on all Top Mount Models All Milfab models are available with oil-impregnated bronze bearings. COMMON USES: • In progressive dies for a clear coil path between strokes • To punch from inside the part • In-die punching in forming dies after the surface is formed • Punching surface is only accessible from above • To reach over large flanges • Where a bottom die mounted cam unit interferes with...

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Milfab Cam Punch Units -8

SEVEN POINT SELECTION GUIDELINES 1. Material Thickness. Do not exceed the rated material thickness for each cam unit without consulting our engineering department. 2. Part Shape. Use the Pos-Z-Cams where positive stripping is required. Use Inboard Spring cam units on flat parts with room for urethane stripper displacement. Use Outboard Spring cam units on tubes and cured surfaces for positive die spring stripping. Use Gas Spring cam units where higher stripping force is required. 3. Punch Stroke. Select amount needed. Use full stroke for maximum leverage and stripping force. 4. Punching Force....

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Milfab Cam Punch Units -12

DESIGN A Four punches on a common horizontal centerline in an inboard cam unit. DESIGN B Outboard style cam unit with a punch point larger than the punch body. DESIGN C Only the gas spring model can generate high enough stripping force to retract the oversized point from thick, sticky aluminum. DESIGN D Two punches on a large, common vertical centerline. To assure smooth motion and prevent side loads, two triggers are used, one below and behind the other. DESIGN E Two punches on a small, common vertical centerline. Using a larger body size, one trigger can safely drive both punches. DESIGN F...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.