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Before We Start

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Meet your Speakers

FEATURED SPEAKER

Mark Zanolla Gortrac Engineering Manager Dynatect Manufacturing, Inc.

FEATURED SPEAKER

Mark Cunningham Gortrac Sales Manager Dynatect Manufacturing, Inc.

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1.  Basic Carrier Design & Selection 2.  Selecting Construction 3.  Design Considerations 4.  Optimizing Accessories 5.  Value Added 6.  Planning for Installation

Topics

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•  Cable/Hose Specs

•  ODs

•  Weights

•  Minimum Bending Radius

•  Space Restrictions

•  Orientation

•  Travel

•  Velocity

•  Acceleration

•  Environment

Determine Size

Determine Length

Determine Style

Basic Carrier Design

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Determining Size

Cable/Hose Safety Factor

•  Cables: + 10%

•  Hoses: + 20%

.50”

Cable .25”

Cable 1.00”

Hose B= Cavity Height Determined by OD

of largest cable/hose

A= Cavity Width Determined by adding the

ODs of all cables/hoses and Divider Widths

Step 1: Draw a box Step 2: Add Cables/Hoses

Step 3: Determine “B” Dimension: Step 3: Determine “A” Dimension

Step 5: Check “C” & “D” Dimensions against space restrictions C = Outer Width

D = Outer Height

B ≥ 1.2” A ≥ 2.05”+ Seps

Step 4: Consult catalog for appropriate series

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R = Radius

Step 5: Determine minimum bending radius of largest cable/hose Step 6: Consult catalog to select closest standard bending radius

K = Depot

H = Curve Height

1.00” Consult cable manufacturer’s spec or

use 8 – 10 X OD

Step 7: Check K & H dimensions against space restrictions

Determining Size

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Step 1: Determine required machine travel Step 2: Determine whether carrier can be center mounted

½ Travel + K ½ Travel

Step 3: Consult Gortrac catalog for CL of selected radius

CL = (R x π) + (Pitch x 2)

Step 4: Travel/2 + Offset + CL = Carrier Length

Determining Length

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Horizontal Lower Flange Fixed

Horizontal Upper Flange Fixed

• Must be supported from underneath

• Most applications

• Lower bracket should have support

• Usually only practical on short travels

• Useful for overhead applications

Support

Support Support

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Vertical Curve Down Vertical Curve Up • Very carrier friendly application

• Cable and hoses must be clamped

• Carrier must have vertical support to avoid “light-bulb” effect

• Not recommended for long travel

• Usually seen above machine tools etc. • Vertical travels require no camber

Support

Support

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Opposed System

Nested Carriers

• For applications with width restriction

•  Reduces carrier fill weight • Support roller cannot be used

• Alternative to double ended system

• ‘H’ Outer > ‘H’ Inner + 2X outer link height.

• ‘H’ dimension of outer carrier must be larger than inner

carrier

• Width must be the same for inner and outer carrier

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Combination Horizontal and Vertical • Not recommended for long or heavy applications

• Upper bracket may need additional support

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Side Mounted

• Should be supported from beneath

• Useful in high speed applications

• For long Rotary Travels, Trough should be lined with UHMW or HDPE

• Metal carrier may need “Skid Blocks”

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Rotational

• Must be supported from beneath

• Inner or outer rotation R1

R2

• Maximum of 720° Rotation

• Required information:

•  Inner radius

•  Outer radius

•  Inner or outer drum motion

•  Angular displacement

•  Mounting location

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Selecting Construction Does the environment require an enclosed carrier?

What is the required unsupported span?

What are the commercial issues?

Are there high velocities or accelerations?

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Plastic Vs. Steel

As a general rule, plastic carriers are:

•  Lighter

•  Less Expensive

•  Easier to access

As a general rule, plastic carriers are:

•  Heavier

•  More robust

•  More expensive

•  Harder to access

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Open Vs. Enclosed

Are there chips present?

Are the chips red hot?

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Design Considerations

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Design Considerations

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Design Considerations

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• QUALITY

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QUALITY

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QUALITY

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QUALITY – KEYENCE MEASURING

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• LEAN / C.I.

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LEAN

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•  Custom design (sheet metal ; plastic part) •  NPD •  2D AutoCAD / 3D Solidworks •  FEA analysis •  Rapid prototyping •  FMEA / PFMEA •  APQP •  CNC programming •  Project management •  Research & Development •  Costing / T&M’s •  ECN’s

Capabilities to look for

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• NPD

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NPD

S1- 1992

SRC- 2004

SX- 2008

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NPD

•  NEW MA SERIES

1

2 4

3

1

1.  Locking feature utilizes proven extrude technology currently used on other AWP products (SX). Extrude allows for greater unsupported spans2.  Same “self-cleaning” feature with peanut slot located on outside of part.3.  Utilizes same bar, screw and rivet components as current GX.4.  More reliable performance (smoother rotation, etc.) due to increased link to link engagement.5.  Simpler part design allows for more robust manufacturing process.6.  Cleaner interior cavity with details eliminated or moved to outside of link.

5

6

CURRENT GX SERIES

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NPD PATENT PENDING

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• A P Q P

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APQP

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APQP

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APQP

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R & D

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R & D

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R & D

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R & D

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R & D

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R & D

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Every cable carrier has a unsupported span. This span is a condition of link construction and the fill weight of the cables and hoses being carried. As the unsupported span of the carrier is exceeded, the carrier begins to sag.

Long Travels

0

4

8

12

16

20

24

28

0 2 4 6 8 10 12 14 16 18 20 22 24Unsupported Length (FT.)

Cable

/ Hos

e Weig

ht (lb

s./ft.

)

SCSLXL

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In plastic carrier systems, sag is considered to be acceptable in most applications.

Long Travels

The most common method of support in plastic carrier applications where unsupported spans are exceeded is to install a guide trough to prevent lateral movement during travel.

When this sag reaches the point where the upper (moving) section of the carrier contacts the lower section, the application is defined as long travel and support guidance is required.

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Trough Systems

Deep Style Shallow Style

In a center mounted application, the trough consists of two Styles: Deep and Shallow.As the carrier begins to travel from the retracted position, it initially sags and rides on itself.When the gliding section passes the center point, it transitions to the shallow trough segment.

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Trough Systems

Deep Style Shallow Style

In a center mounted application, the trough consists of two Styles: Deep and Shallow.As the carrier begins to travel from the retracted position, it initially sags and rides on itself.When the gliding section passes the center point, it transitions to the shallow trough segment.

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F = (m * a) + (m * g * u)

F = Max. pulling (Towing) force (Lbs)m = Mass of system - Empty track weight plus additional cable/hose load (lb.)a = Max. Acceleration (ft/sec2)g = Acceleration due to gravity (32.20 ft/sec2)u = Coefficient of Friction

866.00 Track Length (in)5.50 Empty Track weight/ft. (lbs./ft.)9.05 Cable/Hose weight/ft. (lbs/ft.)0.03 Acceleration (G's)

32.20 Acceleration due to gravity (ft./sec2)0.20 Coefficient of Friction

241.62 Total Towing Force (Lb.)

Towing Force Calculation

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Optimizing Accessories

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NPD PATENT PENDING

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DESIGN

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DESIGN

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Value Added

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Planning for installation

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Meet your Speakers

FEATURED SPEAKER

Mark Zanolla Gortrac Engineering Manager Dynatect Manufacturing, Inc.

FEATURED SPEAKER

Mark Cunningham Gortrac Sales Manager Dynatect Manufacturing, Inc.

#DWwebinar

q  This webinar will be available at designworldonline.com & email

q  Tweet with hashtag #DWwebinar

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