Many of those early systems are still in service today — a testament to their design and high quality components.
A standard system is configured with a hydraulic power-pack delivering oil via flexible hydraulic hoses to a tool consisting of a C-frame mounted rivet setter and upsetting die. Activation is by either a switch handle (mounted on the back of the C-frame) or a foot switch.
Typical configurations include:
Spring balance-supported tool, suspended from an overhead gantry or track
Fixed pedestal tool (may be used in conjunction with robot manipulation of the component through the tool)
Three basic hydraulic models are available. All are capable of setting the full range of Henrob rivets:
Hydraulic Single Acting (SA) – a cost-effective solution for low volume applications. This single-phase 115/220/240 VAC unit can be readily moved around a workshop. The high-pressure rivet setter is compact and lightweight, affording good mobility.
Hydraulic Double Acting (DA) - for fast cycle times and long hose runs, commonly up to 25 metres. This is a true workhorse capable of continuous production in the most arduous environments. The rugged and simplistic construction lends itself to minimal and basic maintenance, well within the capabilities of most workshop personnel.
Hydraulic Double Acting Pre-Clamping (DAC) - incorporates high force clamping prior to rivet insertion. This technology was initially developed for the automotive industry where superior joint quality is required. These systems have proven their reliability in service for many years.
Options and upgrades for DA and DAC systems include:
Operation of single or twin rivet setters from one power-pack
"Category 3" two-handed safety control
Partial retract positioning of the rivet setter nose
Complete compatibility with all of Henrob's rivet feed options
Rivmon™ - Henrob's proprietary process monitoring system
Henrob | Self Pierce Riveting
Henrob is committed to pushing the boundaries of HSPR technology to new levels. Its philosophy - "an innovator not an imitator" - is realised in a corporate culture based on entrepreneurial and creative flair. We are extremely proud of having in our Henrob family the largest and most talented group of people solely dedicated to self-pierce riveting technology.
Henrob’s philosophy is to design reliable, robust solutions for production. This is achieved with the aid of 3D computer-aided design (CAD) software allowing in-depth modeling of tools and product access studies. Finite Element Analysis (FEA) software is used to ensure adequate life expectancy of components. Design data can be exchanged via the web, e-mail or FTP servers, offering rapid turnaround of rivet joint designs and equipment proposals.
Henrob applications engineers add fastening and assembly expertise to your technical team. After a careful review of your joint and installation needs, they will propose a complete fastener and tool specification suited to your application requirements and production environment. They may even suggest product design changes to allow more efficient assembly.
Whether developing a new product or streamlining assembly of an existing one, you can rely on Henrob's experience and innovation in fastening technology. From standard tools to customised systems, from rivet joint design assistance to automated assembly cells, Henrob can find your optimal solution.
Henrob fastening systems have benefited applications in a wide variety of industries around the world. View our case studies to see how we have helped customers cut in-place costs while improving their assemblies and finished products.
Henrob Self-Pierce Riveting (HSPR) is a cold joining process used to fasten two or more sheets of material by driving a rivet through the top sheet(s) and upsetting the rivet, under the influence of a die, into the lower sheet without piercing it.