Semi-Automatic Riveters

Our engineers have designed, built, installed, and supported over one hundred C-Frame Riveters working for Electroimpact or previous employers.

The C-Frame Drill Rivet Machine offers a larger part processing capability and can be supplied with various options to meet your manufacturing needs. Ease of set-up and tool-changes with minimum downtime and Automatic Feed System with various tooling makes the Drill Rivet Machine a standard for rivet installation.

The C-Frame Drill Rivet Machine with proper upper and lower tooling will handle all standard aircraft-type rivets and all materials capable of being squeezed, while controlled parameters of machine operation contribute to high-order repeatability with a low rivet rejection rate.

EI C-Frame riveters are available in Portable and Stationary configurations with Nut Plate instillation capability and Leading Edge Dual Ram (Knee) style automatic fastening systems.


Portable C-Frame Riveters:
The EI - Portable Rivet Machine is an automatic drill, seal, rivet machine, utilizing an interchangeable mini-hopper rivet feed system. It is a self-contained system with associated power and control elements all mounted on a roll around cart or C-frame structure.

The EI - Portable Riveter is comes standard as a single spindle, but is offered with an optional dual spindle model. The drill spindle has a feed rate capability of 2-96 inches per minute, and is capable of drilling quality holes using various drill bits in different aluminum alloys and maintain hole quality specifications.

Models can be purchased with a 30" or 36" (inch) throat depth. All versions of the EI Portable C-Frame Rivet Machine operate on 110-volt AC power and standard shop air (85 PSI). Units can be purchased with full electrical capabilities.

Stationary C-Frame Riveters:
Stationary C-Frame Rivet Machines are available with throat depths up to 60" and 84" inches. Stationary C-Frame Riveters are available as a standard single spindle model or a dual spindle model.

Nut Plate Riveters:
Nut Plate Riveters will automatically install nut plates or dome nuts. The machine will drill and countersink the two nut plate mounting holes, install the nut plate and upset the fasteners. The machine can also be supplied with a second drill spindle for drilling the nut plate center hole.

Leading Edge Dual Ram (Knee) Style Riveters:
Leading Edge Dual Ram (Knee) style automatic fastening machines have a unique ram design, which allows the fastening of leading edges, and close clearance parts. The narrow ram can reach inside of many parts and, therefore allows automatic fastening in areas that cannot be fastened on conventional lower rams.

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Latest EI riveter running 20 FPM on a coupon

C Frame Riveter

36" Portable
C-Frame		 36" Nut Plate
C-Frame		 60" Stationary
C-Frame		 84" Stationary
C-Frame		 48" Leading Edge
Dual Knee

Model EI-12-36-P (PORTABLE DRILL/RIVET MACHINE)

EI-12-X-P (X = Throat Depth 30", 36" inch; P = Portable)

Mouse over the sections below.


Overview

EI-12-36-P (PORTABLE DRILL/RIVET MACHINE)

The EI - Portable Rivet Machine is an automatic drill, seal, rivet machine, utilizing an interchangeable mini-hopper rivet feed system. It is a self-contained system with associated power and control elements all mounted on a roll around cart or C-frame structure.

The EI - Portable Rivet machine can be used to process various parts from small sub-assemblies to medium size assemblies.

The EI - Portable Riveter is comes standard as a single spindle, but is offered with a dual spindle model. The drill spindle has a feed rate capability of 2-96 inches per minute, and is capable of drilling quality holes using various drill bits in different aluminum alloys and maintain hole quality specifications.

The EI - Portable Riveter is also offered in a floor-mounted C-frame version.

Standard Features
  • C-Frame 36 Inch Throat Depth
  • Maximum Cycle Time 4.5 Seconds Clamp to Unclamp
  • Stationary Mounted Platform Fork Lift Mounts
  • Work Height Approximately 48 Inches
  • Capable of Installing Universal, Flat Head, Modified Universal Head Rivets, and Hi Set Rivets from -5 to -6 grip diameters with Proper Tooling
  • One Upper Anvil Assembly -5 Rivet Size
  • One Pressure Foot Bushing -5 Rivet Size
  • One Straight (Stake) Lower Anvil -5 Rivet Size
Optional Features
  • Portable / Wheel Mounted Platform
  • C-Frame 30 Inch Throat Depth
Upper Head

The Upper Head Assembly consists primarily of:

  1. An electric/pneumatic drill spindle and motor for the drilling operation
  2. A pressure foot bracket and pressure foot bushing for the specific clamping operation
  3. The many, various components required for drilling the rivet hole and transfer mechanisms to inserting a rivet in the drilled hole and bucking the rivet head while the shank is upset by the lower anvil.
Standard Features
  • Three Position Head (Drill/Countersink, Sealant, and Rivet)
  • Adjustable Forced Air Chip Blowers
  • Drill Spindle Station
  • Capable of Drilling Aluminum, Steel, and Titanium Alloys
  • Drill Spindle to Accept Acura Flex Collets
  • Countersink Depth Selection in 0.0005 Inch Increments
  • Variable Drill Feed Adjustable from 2-96 IPM
  • Adjustable Drill Speed from 0 to 6000 RPM
  • Countersink Adjustment Range .75 Inches
  • DC Servo Motor Spindle Drive
  • Adjustable (software) dwell delay of 0-5 seconds
  • Laser Spot Locator
  • Sealant Insertion Station
  • Pneumatic Control Sealant Dispenser "Semco"
  • Quick Change Sealant Tips "Semco"
  • Alternate Probe Station with Options Selected
Optional Features
  • Adjustable Drill Speed from 0 to 12,000 RPM
  • Broken Drill Detector
  • Optional Four Position Head (Drill/Countersink, Sealant, Probe, Rivet) Or Dual Drill Spindles with Shave Capability
  • Drill Lubrication System
  • White Light Rivet Spot Locator
  • Work light High Intensity Halogen Lamp
  • Probe Station For Locating Pre-Drilled Holes
  • Vortex Drill Chiller with Pulse Timer
  • Resilient/Retractable Pressure Foot Bushing
  • Detentable/ Rotatable Pressure Foot Bushing
  • Shatterproof Guard Upper Head / Safety Switch Interlocks
  • Upper Tooling Pressure Foot Bushing Clearance 2.5 Inches
Lower Ram

The Lower Ram Assembly consists primarily of an air-pressurized turntable arrangement, a lower anvil configuration, and an upset cylinder. Limit switches for clamp and safety, and lower ram clamp turntable for installation and use of various lower anvil tools.

Standard Features
  • Upset Force of 12,000 (Capable of -8 (1/4" rivet installation)
  • G39 Tooling Capability
  • Adjustable Clamp Force from 50 to 300 Pounds
  • Maximum Stack Thickness .500 Inches
  • Deep Drop Daylight Opening of 6 Inches
  • Quick Change Lower Tooling Mount
  • Manual Tool Rotation of 360 degrees
  • Lower Tool Force Air Chip Blowers
  • Upset Force Air/Oil
  • Clamp Stroke 1.00 Inches (25.4mm)
  • Tipped Rivet Detection Switch
  • Clamp Safety and Over Travel Switches
  • Deep Drop Control Switch
Optional Features
  • Lower Ram Grip Sensing via Encoder, Displayed in Grip Length Increments/Inches
  • G200 Tooling Capability
Controls

Electrical power is required to run the computer logic controller as well as valves, lights and other machine accessories. Pneumatic power is used for the chip blowers, fastener feed systems and the clamping action of the machine. Pneumatic and electrical power is supplied by the user's facility.

Standard Features
  • Direct Logic Programmable Controller
  • Machine Cycle Timer
  • Machine Cycle Counter
  • Digital RPM Display
  • Set Up, Tool Change, and Run Modes
  • Front Fixed Operator Interface Terminal
  • Operators Control Panel Touch Screen
  • Operating Power 110VAC, 20AMPS
  • 120 VAC Duplex Outlets 2 Each
  • Modem For Remote Troubleshooting
  • Tandem Foot Switch Controls With Emergency Stop Button
  • Compress Air: 85-100 psi, 50 to 100 CFM
  • Pneumatic Master Air Shut Off, Air Filter and Dry Air Regulator Unit
Optional Features
  • Allen Bradley Programmable Logic Controller
  • Siemens Programmable Logic Controller
  • Soft-touch Operators Station/With Help Feature Mounted on a Multi-Link Moveable Arm
  • Camera System (one each upper and lower camera with monitors)
  • Ethernet Communication for Remote Troubleshooting
  • Safety Light Curtains
  • Operating Power 220VAC Single Phase or 220VAC 3 Phase
Feed System

The function of the rivet feed system is to provide storage space for the required rivets (type, diameter, and length) and to provide the required rivets to the drilled and/or countersunk holes when needed.

Standard Features
  • Mini-Hopper Feed Units
  • Quick Change Brackets
  • Missing Rivet Detector
Optional Features
  • Cassette Rivet Feed System
  • Bin-Hopper Feed System
  • Rivet Clear System
  • Automatic Fastening System
    Vibratory Feeder Bowls /Orientor Inject