RIVTAC

01. RIVTAC_개요 및 특징

Your benefits

· Joining without pre-punching in case one-sided accessibility

· Reduction of Joining and cycle times to a minimum

· Joining of high-strength materials without distortion in the component

· Flexible application for mixed joints, multiple-layer Joints and hybrid Joints

· Optimal possibility of combining with adhesiin technology

· Environmentaly friendly workplace design : no fumes, air extraction is not necessary

· Energy saving processing

Joining

· Strength and reliability

· Suitable and visual Inspection

· Reproducible and process reliable

02. RIVTAC_설비 툴 상세

1 Compact design for optimal access to the joining location

2 Pneumatic drive with punch piston and elastic buffer

3 Spiral magazine for up to 51 tacks

4 Incl. filling level indicator and separation control

5 Robot connection via adapter plate (standard),optional media docking

Adapter plate for mechanical connection,
see 6.0 Annexes - No. 1

6 Real-time process monitoring by means of a path sensor

7 RFID chip for storing all relevant parameters

8 Compact nose piece for good one-sided accessibility

03. RIVTAC_시스템 구성도

[Proportional valve unit(PVE)(3rd axis)]

[Tack setting tool]

[Control unit]

[Loading station]

[Multi-visualization (optional)]

04. RIVTAC_Joining Process

Joining Process

What is the concept behind RIVTAC high-speed tack setting?

In this Innovative mechanical joining process, a nall-like auxiliary joining part, the tack, is accelerated to I and driven Into the joining parts which are not pre-punched. The speed can be controlled through the joining pres-sure and depends on the materials to be joined as well as on the component thicknesses.

At the beginning of the joining process, the ogival point of the tack displaces material extruding It for the tack shank. The joining part materials can flow Into the straight knurlins of the shank to result In positive locking. particularly for highter-strength materials, a trictional connection is created because the joiningparts are formed and pressed. Therefore, the joint strength results from those two principles of action.
To apply this method, the joining parts must be sufficiently strong so that they can resist the penetration Impulse of the tck without significant componet deformation

High-strenth materials, mixed joints as well as multiple-layer joint can be joined without loss of performance-providing particularly good strength characteristics.

05. RIVTAC_Material cobinations

Joints

· Aluminium(pressure cast, extruded, sheet)

· Sttels

· Plastics and flore-reinforced plastics(e.g. flore glass or carbon)

· Also material combinations with magnesium, copper, film, metal mesh, wood, sandwich materials

· Joining of mixed joints, multiple-layer joint and hybrid joints of these materials

· Adhesive as a laminate layer

Variable material combinations become increasingly important, especialy during the development of innovative autiomobile and car body concepts.

RIVTAC is particularly suitable for joints of aluminium, steel, plastics, non-ferrous metals as well as for mixed joints, multiple-layer joints and hybrid joints of these materials.

Example material combinations in cross section

[Steel sheet / Steel sheet]

[Aluminium sheet / Aluminium profile]

[Aluminium Sheet / Aluminium profile with adhesive]

High-strength joints

The following chart lilustrates the joining strength of example material combinations under sheet and cross tension load. in addition to the pure steel and aluminium joints representing the joining technology. mixed joints are shown as well.

The following figures show the load/deflection trends of similar steel/steel and aluminium/aluminium joints and also those of dissimilar aluminium/steel joints.
You can easly recognise dependencies between the material/thickness combination and the achieved joint strengths. Depending on the material combination. however,
joint strengths comparable with those of aluminium basic material can be achieved even with an effective tack shank length of only 3mm. In the cross tenstion test,
the aluminium sheet is then unbuttoned from the tack head. With respect to this component fature, the strength is rather limited through the material properties than the joint itself.
This is a rebolutionary further development in the mechanical joining technology. In addition to the one-sided accessibility of the joining point.