GISS 3000

- clamping time: approx. 5   secondes
- controlled, energy-saving heating   of the shrink fit chuck
- no heating of taper
- incorporated, electronically   controlled length adjustment to   +/- 0,02 mm during heating
- concentrated cooling within 30   seconds
- water-cooled, integrated cooling   element
- good mobility as well as   workshop suitable

For the first time GISS 3000 offers the operations shrinking, cooling, and high precision length adjustment in one device. GISS 3000 is developed to shrink solid carbide tools (dia. 3...32mm) and HSS-tools (dia. 6...32) into Guhring GM300 shrink chucks using only one induction coil. This is possible thanks to a controlled heating, fast cooling of the tool, is simple to operate thanks to highly advanced software and incorporates an extremely precise length adjustment. GISS 3000 is especially suitable for the automated production in multi spindle machines and transfer lines in the automotive industry, aerospace industry as well as in large batch production.

GISS 2000

- clamping time: approx. 5   secondes
- no heating of taper
- simple operation
- superb cost-efficiency
- tool room suitable
- optimal protection against burns

- cooling down time (with SpeedCooler): appr. 30   seconds
- simple adapter systems makes it possible to fit   all taper sizes and HSK
- insignificant heating of tool
- efficient energy consumption as energy supply is   regulated
- very short shrink fit times and
- minimal heating through manual operation
- concentrated and very fast cooling capacity   through contact cooling
- water cooled coolant body
- no cooling adaptors necessary

- compressed air is not required,   therefore cost saving
- the technique can be applied at   any location with mains power   supply
- internal cooling is fan operated
- low energy consumption
- problem-free tool length   adjustment (dia. 3...200 mm)
- uncomplicated operation

The hot-air shrink fit technique is exceptionally suitable to shrink fit for the insertion and the withdrawal of tools with carbide shanks. Air is the only element applied - in hot and cold form. Created by a fan blower, the incoming hot air causes the expansion of the shrink fit chuck. The lower area in the bore of the holder expands and the shank tool can be inserted. The following cold air then contracts the bore and the tool is securely clamped. Once the shrink fit chuck has been heated up again, the solid carbide tool can be withdrawn. Heating and cooling is performed solely with surrounding air.
Important: HSS tools shanks should not be shrink fitted because they produce similar expansion coefficients. Hereby the hot-air shrink fit technique has numerous application possibilities because it is suitable for all current shrink fit chucks with HSK, ISO taper or MAS BT interface, a 3 to 20 mm clamping diameter and an overall dimension of 200 mm, including shrink fit extensions with a shank diameter from 16 to 20 mm. The shrink fit time is approximately 1 to 3 minutes according to the configuration.

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Our modular tooling system G 300 has been developed for the application of rotating and stationary tools. 1987 we developed the GM 300 coupling. Standardization (DIN69893) of this interface was obtained in 1991. Next step will be the ISO-standard, which is already prepared. The unique design of the clamping method offers not only an ideal interface for manual clamping within the tooling system, but also an ideal interface for automatic clamping directly to the machine spindle or tool holder.
Characteristic feature: tapered hollow shank (HSK) with axial plane clamping mechanism according to DIN 69893.

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The most important advantages are as follows:

The axial and radial forces generated in the tool shank provide the necessary clamping force. General values for GM 300 module for manual clamping.

The wedging effect between the hollow taper shank and the holder or spindle causes a friction contact over the full taper surface and the plane supporting face. Two keys engage with the shank end of tool holder and provide form-closed radial positioning, thereby excluding any possible setting errors.

The circular form engagement of the clamping claws within the hollow tool shank provides a totally tight connection between the shank and spindle or holder.

The higher number of revolutions the better, as this increases both the power and effectiveness of the locking of the clamping mechanism. The direct initial stress between the hollow shank and the spindle holder compensates for the spindle expansion generated by thw centrifugal force so that there is absolutely no radial play. The plane clamping position prevents any slipping in the axial direction

Rational tool change due to a short shank length (approx. 1/3 of the conventional ISO taper) and light weigth (approx. 50% of the ISO taper).

The uninterrupted design of the ring-shaped axial plane clamping simplifies the cleaning of the coupling. During an automatic tool change compressed air provides ideal cleaning in the interface.

To allow for the attachment of common identification systems, a hole of 10 mm diameter and 4,5 mm depth is provided for the data media (coding chips) in the vicinity of collar.

The geometry of the GM 300 corresponds to DIN 69893.

The tools for automatic clamping are designed for a central coolant feed by means of a duct. Tools with manual change behind the GM 300 interface also operate with a central coolant feed. The clamping elements are entirely sealed against the entry of coolant so that fouling is prevented.

Coolant supply sets are to be ordered separately for all GM 300 modules.

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Drill and chamfer tool system FS 300

If we analyse the multiple of tasks in the cutting world, the proportion of drill and chamfer operations lies above 25% - a good reason to always strive to combine these two operations. Up to approx. 8 mm diameter, and for large batches, we generally recommend the conventional step or multi-step drill as the most economical solution. If larger diameters with varying drilling depths are to be produced in small bathches then we no longer regard the single step drill as economical. Considerably more economic than conventional tools is our combined drill/chamfer tooltype FS 300, a high-tech-tool, with hydraulic chuck, developed for high accuracy requirements and for modern machining centers. Play-free, concentric clamping of drill and chamfer collar in hydraulic chuck, therefore suitable for HSC.
A further advantage is the minimum danger of collision because the external diameter of the chamfer collar is only marginally larger than that of a standard hydraulic chuck.

- application with standard drills, with or without   internal coolant ducts
- drilling depth infinetely variable and precisely   adjustable
- reduction in tool cost, i.e. only one tool required   for various drilling depths
- simple operation
- especially suitable for the machining of cast iron,   AlSi-alloys, but also structural and heat-treatable   steels
- for standard 90° chamfer. Application of DIN-ISO   indexable inserts with mino modification. Further   chamfer angles or designs including additional   indexable inserts (i.e. facing) on request
- optimal positioning of indexable chamfer insert to   the drill body, as radial adjustment is provided by   the clamp and the rotating chamfer collar
- extreme rigidity of whole system
 .high concentricity accuracy of drill and chamfer   tool
- vibration absorbing cutting edge through hydraulic   system

- Drilling - countersinking - facing tool for one   machining cycle

- Drill/countersink combination for mass production   of brake cylinders, carbide-, cermet- and PCD-   tipped inserts

- Drill/chamfer combination for the machining of con   rods. Core drilling and circular advance and return   chamfering operations with one tool

- Solid step drills with interchangeable insert for   drilling - countersinking - facing operations in   brake cylinders, with adjustment facility for finish   machining