Category: Tool Clamping

MAPAL: Hydraulic Chucks with Axial and Radial Adjustment

Hydraulic Clamping Technology with Compensation Technology

The “compensation” chuck is perfectly suited to light clamping tasks with multi-bladed reamers. It builds on hydraulic clamping technology and the radial run-out can be set exactly using three adjustment elements. The radial run-out is corrected using a hex wrench depending on the direction of the error. The setting range is up to 10 μm. Wedges in the chuck align the tool, jamming of the tool is prevented. The system is self-locking, unintentional movement during fine machining is impossible. A fixed ring seals the alignment system. It is therefore low maintenance and not susceptible to dirt.

Radial Tool Length Adjustment

In the area of clamping tools with HSK connection, MAPAL offers hydraulic chucks with radial tool length adjustment.  With this setting method, radial run-out accuracy ≤ 3 μm can be ensured.

Technical Data

– Material 1600-1800 N/mm2 tensile strength
– Adjustment travel 10 mm
– Hardness 52 + 2 HRc
– DIN 1835 Form A, B, C, D
– Balanced tool holders
– DIN 6535 Form HA, HB, HE
– Laser inscription
– Coolant pressure max. 80 bar
– Max. spindle speed 40,000 min-1
(note spindle speed limit for connection, fine balancing recommended!)
– Optimum operating temperature range 20-50 °C;
higher temperatures on request, do not use above 80 °C
– Shanks suitable for clamping (tolerance h6) with and without reducing sleeves:
– DIN 1835 Form A, B, E
– DIN 6535 Form HA, HB, HE

Please contact us for more information on MAPAL Hydraulic Tool   Clamping Solutions.

 

New MAPAL Tool Holders Programme

At a Glance
  • New design concept for chucks with added value
  • Brilliant surface finish and clear handling information
  • Expansion to the entire chuck programme planned
Advantages
  • Corrosion-resistant chucks
  • Self-explanatory, straightforward handling – foolproof
  • Greatest possible stability with optimal usage of resources

Carefully considered Design taps Potential

Not only the appearance of the chucks was revised, above all added value for the customer was to be generated by means of carefully considered industrial design. Why? An ingenious design is not only a visual highlight, it also taps economic and ecological potential. Starting from this point, the product designers prepared, together with those responsible for the products at MAPAL, a new concept that is also based on function and FEM analyses.

The chucks designed according to this concept shine proverbially with a new brilliance. One of the elements in the new concept is the brilliant surface finish. This surface finish, produced by a specially developed polishing method, ensures that the chucks are more resistant to corrosion than in the past.

Easy, Self-explanatory “foolproof” Handling

A further requirement on the new design was so-called “foolproof handling”; that is the easy, self-explanatory handling of the chucks. Controls were to be identifiable as such more quickly with directly understandable handling information. These requirements were addressed, on the one hand, by the blue colour for the controls, such as the actuating screw on a hydraulic chuck and, on the other hand, by internally developed symbols that contain corresponding information, independent of the related language.

Last but not least the shape of the chucks, their weight and use of material were studied and optimised. The new shape addresses the requirements for the greatest possible stability with optimal usage of resources. Even the smallest weight savings on chucks have major effects that become apparent in use over the long term. Among other aspects, the lighter the chuck, the less energy is required during the acceleration and braking of the spindle.

Corporate design creates Recognition

Due to the new corporate design, the complete clamping technology range can be immediately identified as a MAPAL product – with a promise of quality and function.

 

MAPAL – Miniaturised Clamping Chucks

Thanks to additive manufacturing, MAPAL now offers hydraulic chucks in miniature format with HSK E25 connection, for example for the direct clamping of tools with a diameter of 3 mm. These meet all the demands on chucks for the miniature sector with respect to radial run-out accuracy, balancing value, cooling lubricant supply and handling.

In order to guarantee perfect radial run-out accuracy, innovative clamping chamber systems are integrated into the new chucks that fit tightly against the shank of the tool. They are fitted with dirt grooves as protection against micro-soiling. The demanded balancing value is ensured thanks to the internal balancing geometries and supporting structures that also aid the optimisation of weight and strength. The miniature chucks allow homogeneous acceleration and deceleration of the whole tool system of chuck and tool for less loading of the spindle.

The innovative manufacturing method has also enabled the chucks for the miniature sector to be equipped with decentralised coolant outlets. These outlets are designed using parameters such as coolant pressure, setting dimension and spindle speed so that they deliver the cooling lubricant precisely to the cutting edge. In the best case, a metered total-loss lubrication system is achieved that eliminates the need for subsequent cleaning of the parts.

The new miniature chucks from MAPAL allow quick and simple clamping of the tool. Neither training courses nor high setup costs or expensive peripherals are required for implementation of the chucks.

New possibilities – not only for Tool Clamping

The new small hydraulic chucks also offer new possibilities for the clamping of workpieces. For example, for the clamping of artificial hip joint balls. Specially formed clamping chambers inside the chuck and a special outside geometry ensure that the balls are very precisely and at the same time gently clamped. Particularly in medical technology, topics such as reproducible precision are taking on enormous importance – and this is ensured during machining thanks to the new chucks.

Please contact us for more information.