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The CNC controlled automatic riveting work cell represents the latest State-Of-The-Art in automatic fastening machines and support hardware. ...The knee style machine was developed for fabricating tubular assemblies which are fed into the throat of the machine over an eight inch square lower knee. A CNC controlled four axis positioning system presents the part to the machine for riveting. Support systems include an automatic fastener feed system and a vacuum chip collection system. ...The work cell is controlled by an Allen Bradley series 9/290 enhanced CNC processor. The paper presents each individual system and it's role as part of the total CNC duct riveting work cell.

New controller and drill spindle designs made it possible to redesign the AFDE as a self-contained unit with on-board CNC, custom operator interface, RF network and more compact drill spindles for increased robustness and versatility.

Very large multi-axis CNC machines offer a special challenge for efficient and accurate machine compensation. Aerospace applications demand tight tolerances, but conventional compensation methods become expensive for large machines.

A piezoelectric tool actuator system is presented for precision turning of turbine shafts on conventional CNC turning centers. The actuator system provides precise motion in the radial direction to accurately set the depth of cut in finish turning.

CNC technology is slowly finding its way into the manufacturing mainstream. Though the manufacturer often lacks the capital to invest in technically advanced equipment; there is a less expensive route to achieving this critical competitive edge. ...Rebuilding and retrofitting existing machine tools with the latest in CNC parts and accessories can reduce the burden of capital asset investment by 40% or more. The aerospace industry has been retrofitting riveters with the most innovative technological advancements in CNC controls and instrumentation to date. ...The aerospace industry has been retrofitting riveters with the most innovative technological advancements in CNC controls and instrumentation to date. Innovations in wing riveting have improved overall process simplicity, operability and part quality.

On CNC Machines, drilling holes under perfect condition is possible. For drilling holes into titanium, composite and aluminum stacked materials the specific cutting condition can be selected. ...When drilling holes in the final assembly, CNC machine tools cannot be employed due to sizes and accessibility. Power Feed Units or Automated Drill Units ADUs are very handy, flexible and depending upon the jig extremely rigid. ...In the mind-set of the fourth industrial revolution, this article presents a completely new approach in the ADU Technology, while the benefits in the capability of CNC machine tools are now available on ADUs likewise. The benefits of using individual cutting condition for every layer in composite/metal stacked material, the worldwide online-process and -data monitoring, the improved tool-management and traceability, the remote diagnostic and improved cutting tool development functions will show a variety of extremely useful and new features.

It provides full CNC control, quick reconfiguration of hole patterns, fast drilling of up to 3000 holes in one 8-hour shift, drills both titanium and aluminum and works inside the fuselage.

A new Electronic Gantry Applied Drilling System has been developed and demonstrated which provides a CNC controlled, multi-axis drilling system to replace hand drilling and countersinking operations at Assembly Jig Stations.

Many of the large CNC controlled riveting systems that were purchased in the late 1970s and 1980s are beginning to show signs of dated technology.

Machining and turning centers take center stage Makers of CNC machining equipment are incorporating more and better functionality into their products so users cope better with processing challenges such as those posed by tough new grades of aerospace materials.

This equipment is considered new technology for it's combination of features which include: CNC positioning, sealant installation, drilling of multiple hole diameters in a single cycle, domenut installation, as well as the capability of varying hole spacing for alternate domenut needs.

To realize autonomous CNC machining, accumulation and representation of such know-how in a reusable way is needed. In this paper, an autonomous machining process analyzer for hole machining is studied.

A feasibility verification of the system is conducted on an actual CNC machining center. It is found that the new control method could improve the motion trajectory accuracy of the axes greatly.

This method of assembly (prior to automatic fastening) uses a new generation, accurate CNC machine tool in conjunction with reconfigurable part fixturing techniques and specialized end-of-arm tools (end effectors).

Use of today’s advance 3-Dimensional CAD systems coupled with the high accuracy of CNC machines enables the success of the determinate assembly approach for aircraft tooling. This approach provides the aircraft manufacturer significant lead-time reductions while at the same time it supports enhanced system flexibility.

In larger machines larger robots or CNC positioners can be used to scale up the use of the machine.

TOPASE today has a series of identical C.N.C. machines each capable of complete panel assembly in one operation. This includes installation of rivets, double headed slug rivets and two piece fasteners.

Traditionally, this required the use of Computerised Numerical Control (CNC) systems to achieve such tight tolerances. However, with the increasing popularity of robotic arms in machining applications, as well as their relatively lower cost compared to CNC systems, it becomes necessary to assess the ability of robotic arms to achieve such tolerances. ...However, with the increasing popularity of robotic arms in machining applications, as well as their relatively lower cost compared to CNC systems, it becomes necessary to assess the ability of robotic arms to achieve such tolerances.

Cutting experiments were conducted on a CNC milling machine for edge trimming of a 9-mm thick multi-layered carbon fiber-reinforced epoxy laminate in a climb cutting configuration.

A single PLC acts as the main overall control, localized motion controllers provide positioning intelligence, and CNC’s control drilling and fastening operations. A best-of-breed approach was used to select the components.