Engineering Data Pilot Assemblies

Transcription

1 Engineering Data Pilot Assemblies The New Industry Standard This product may be covered by one or more patents or patent applications. See for details. 01/17 - Rev. 11

2 Things to Consider Below are three main factors that should be considered when choosing a Pilot size/style for your design. We offer different sizes/styles in order to provide the best possible solution based on your part design and tool application. Stock Thickness / Pilot Diameter Stock Thickness in relationship to the Pilot Diameter is important for (2) main reasons. 1. To provide enough locating surface area, based on land length and diameter, between the pilot and the stock to effectively locate the stock. 2. To provide a robust assembly that reduces the potential of the Pilot assembly being damaged during common mis-hits / mis-feeds where the pilot is required to pierce and/or form the stock. The Ejector Pin style should be the preferred option whenever possible. It is more robust because the Pilot body is fully supported in the Pad/Window. Style: Ejector Pins Ejection Style OR Style: Round Stripper For Thin / Soft Stock - The Round Stripper style will provide a better stripping condition by providing more contact surface between the stripper and the stock. Style: In Pad - with Fastener(s) Mounting Configuration Style: In Window Used when mounting directly in a pad without a window. Retained with Fastener(s). OR Used when a window is mounted to the pad. Retained by a shoulder on the pilot assembly and a step in the window. Engineering Data - Pilot Assemblies - Pg. 2

3 Product Scope / Options / Pricing Heavy Duty Stock Thin / Soft Stock Stock Up to.040 (1mm) (2mm) Up to.050 (1.27mm) (3.8mm) Thick Stock Thick Stock Ejection Ejector Pins Round Stripper Mount Fastener(s) - In Pad In Window Fasteners - In Pad In Window Pictures Fasteners (1) Fastener (2) Fasteners No Fasteners (2) Fasteners No Fasteners Dia. Product # / Price.3125 PA S-P-F1 $47 PA S-P-F2 $48 PA S-P-W $47 N/A.375 PA S-P-F1 PA S-P-F2 $51 PA S-P-W PA S-R-F PA S-R-W $ PA S-P-F1 PA S-P-F2 $53 PA S-P-W PA S-R-F PA S-R-W $ PA S-P-F1 PA S-P-F2 $57 PA S-P-W PA S-R-F PA S-R-W.750 PA S-P-F1 $63 PA S-P-F2 $64 PA S-P-W $63 N/A 8mm PA-8mm-1.27mm-S-P-F1 $47 PA-8mm-1.27mm-S-P-F2 $48 PA-8mm-1.27mm-S-P-W $47 N/A 10mm PA-10mm-1.9mm-S-P-F1 PA-10mm-1.9mm-S-P-F2 $51 PA-10mm-1.9mm-S-P-W PA-10mm-1.3mm-S-R-F PA-10mm-1.3mm-S-R-W $46 13mm PA-13mm-2.5mm-S-P-F1 PA-13mm-2.5mm-S-P-F2 $53 PA-13mm-2.5mm-S-P-W PA-13mm-1.9mm-S-R-F PA-13mm-1.9mm-S-R-W $48 16mm PA-16mm-3.2mm-S-P-F1 PA-16mm-3.2mm-S-P-F2 $57 PA-16mm-3.2mm-S-P-W PA-16mm-2.5mm-S-R-F PA-16mm-2.5mm-S-R-W 20mm PA-20mm-3.8mm-S-P-F1 $63 Pilot Diameter Locating Land PA-20mm-3.8mm-S-P-F2 $64 PA-20mm-3.8mm-S-P-W $63 Product Number Structure Ejection Force (Standard or Light ) Ejection Style (Pins or Round) N/A Retention Method (Fasteners(1or2) or Window) PA S P F1 Example: PA S-P-F1 Engineering Data - Pilot Assemblies - Pg. 3

4 Pilot Dia mm 10mm 13mm 16mm 20mm Stock Thickness Range Diameter Range that will interfere with Ejectors when stock is not present Standard Receiving Hole Diameter or 9.5m or 12mm or 11mm or 13.5mm or 16mm or 21.5mm or 19mm or 24mm or 23mm or 28.5mm 0.5mm-0.8mm 0.8mm-1.27mm 0.5mm-0.8mm 0.8mm-1.9mm 0.5mm-1.3mm 1.3mm-2.5mm 0.5mm-1.6mm 1.6mm-3.2mm 0.5mm-1.9mm 1.9mm-3.8mm Usage Guidelines: Ejector Pin Style for Heavy Duty Stock Stock Thickness to Pilot Diameter 12mm - 16mm 13.5mm mm 16.5mm mm 20mm - 24mm 24mm - 28mm Pilot Dia. Clearance minimizes the forces subjected on the Pilot and tooling during a Mis-hit situation. The hole below the pilot allows the material to extrude, rather than creating a pinch trim situation. We recommend that you use our Standard recommended diameters below to keep your design and machining process simple..378 or 9.5mm.469 or 12mm.469 or 12mm.531 or 13.5mm.625 or 16mm.807 or 20.5mm.781 or 20mm.938 or 24mm.938 or 24mm or 28mm Max Stock Thickness Receiving Hole Clearance Requirement Pilot Dia. 8mm 10mm 13mm 16mm 20mm Max Stock Thickness 1.27mm 1.9mm 2.5mm 3.2mm 3.8mm Engineering Data - Pilot Assemblies - Pg. 4

5 Usage Guidelines: Round Stripper Style for Thin/Soft Stock Stock Thickness to Pilot Diameter Pilot Dia. Max Stock Thickness Pilot Dia. 10mm 13mm 16mm Max Stock Thickness 1.0mm 1.5mm 2.0mm Receiving Hole Clearance Requirement Clearance minimizes the forces subjected on the Pilot and tooling during a Mis-hit situation. The hole below the pilot allows the material to extrude, rather than creating a pinch trim situation. Due to thin stock, we recommend that the clearance per side is equal to the stock thickness. This allows for adequate clearance during a mis-hit while still supporting the stock during normal running conditions. Clearance Hole Diameter Formula: Pilot Diameter + (Stock Thickness x 2) Testing was done to ensure each pilot diameter could handle the worst case scenario that was still within our recommendations. This was done using high strength stock at the max thickness with a mis-hit of a half of a hole, thus subjecting all of the forces against the pilot in one direction. Clearance for Stripper and Spring The Round Stripper Style Pilot Assembly is for use with Thin / Soft Stock only. Due to its Body not being supported adjacent to the Pilot Tip, it is less robust than the fully supported Ejector Pin Style Pilot Assembly. Fully Supported Body Engineering Data - Pilot Assemblies - Pg. 5

6 Pilot Installation Instructions Pad Locating / Fastener Retaining 1. Insert Pilot Assembly into pocket or Reamed Hole - Ensure the assembly is seated on the shoulder prior to installing the fasteners - If installation requires a heavy press fit, stop installation, remove pilot, and check that the pocket/ream is within proper machining tolerances *Do Not Use the Fastener to Pull the Pilot Down Into the Bore or Ream F1 & F2 Pilot Assemblies The Hardened Tapered Washer & Patched Fastener must be used with the F1 & F2 Pilot Assemblies 2. Install Fastener(s) / Tapered Washer(s) / Flange *Torque to Screw Mfg. Specifications Replacements Available E = PA-E-F1-F2-Fastener M = PA-M-F1-F2-Fastener Pilot Assembly Parts Kit Available Machining Gages Available To ensure your Pilot Locating Bore is machined within proper tolerance, use Go/NoGo Machining Gages available from Standard Lifters. Cost is around $14-$20 per gage, and is an inexpensive investment to ensure your machining department is able to measure and hold proper locating bore tolerances. These Kits include all of the components needed to refurbish a Pilot Assembly. Call Standard Lifters to order the kit for your Pilot Assembly Engineering Data - Pilot Assemblies - Pg. 6

7 Design Improvements: April 2016 In an effort to offer the most robust and highest quality products possible, we have made the following improvements to the design of the Pad Mounted/Ejector Pin Pilot Assembly. Greater Robustness achieved by increasing thickness of the cross section between the hold down feature and the internal groove Old - 90 Deg. Step on Pilot with Straight Washer New - Angled Surface on Pilot Body with Angled Washer - Proven 2-3X Stronger in Static Testing Now offering two hold-down options for Pad Mounted Ejector Pin Pilots - F1 with a single (1) hold down or F2 with dual (2) hold downs Old - PA-XXX-XXX-S-P-F All Pilot Bodies have (2) hold down features New - PA-XXX-XXX-S-P-F1 PA-XXX-XXX-S-P-F2 (1) hold down (2) hold downs Additional clearance added to the pilot body to better accommodate pad machining issues occasionally found at the bottom of the Pocket Old - Bearing/ Locating Surface.001 per side of clearance.030 Radius New - The body lead-in profile was changed slightly to ensure the bottom of the pilot is seated in the pocket. NOTE: The overall envelope and required machining for the product did not change from the prior design. The improved design is a drop-in replacement for the older Pilot design. *CAD Model & Part Number Update Required Bearing/ Locating Surface.003 taper per side of clearance.060 Radius Engineering Data - Pilot Assemblies - Pg. 7

8 For New and Updated Information