Monday, August 25, 2014

Berg Clamping systems Tool Clamping - HSH

For HSC workpiece machining the clamping forces according to DIN 69893 are frequently no longer sufficient. The idea to create an extremely rigid connection between the tool and spindle by placing the clamping element directly against the internal spindle contour, reached its design limits, due to the cross sections and surfaces available for the force transmission. With their HSH-gripper, BERG-Spanntechnik have met the requirements for clamping forces notably exceeding the values specified in DIN 69893. HSH-gripper are intended for the clamping of hollow shank tooling with central cooling lubricant supply.

Design features
HSH-gripper consist of six sturdy clamping claws, which, held by means of an annular spring, execute a tilting movement when the hollow shank tooling is changed and removed. During clamping, the centrally arranged draw-bolt transfers the actuation force onto the clamping segments, where it acts as a direct clamping force without further force deviation. The generously dimensioned face of the draw-bolt has been provided for tool ejection. The constructive design of the clamping element offers a large clamping reserve. The internal spindle contour is easy to manufacture.


Sunday, August 10, 2014

Berg clamping systems SK-Steep Taper Tooling

TOOL Clamping systems and release systems
Depending on the selected clamping set type and the machine requirements complete clamping and chucking systems are available in combination with the various actuation elements.
The following chart is provided for the purpose of allocation and selection. The actuation devices are described and depicted in detail in the specific data sheets. Please contact us for more information for clamping and release systems which are not detailed.
Gripper Clamping cylinder, rotating Multi-energy supply, stationary
Spindle speed nmax. <4000 rpm <15000 rpm > 15000 rpm
Features / Type ESK OHLK OHL SEK SE
Clamping Electrical Hydraulic Hydraulic Mechanic Mechanic
Releasing Electrical Hydraulic Hydraulic Mechanic Mechanic
Spindle bearing relieved
Position control
Compressed air supply
Cooling lubricant supply
Gripper Clamping cylinder, rotating
Spindle speed nmax. > 15 000 rpm
Features / Type HDZ HLZ HLZE
Clamping Mechanic Mechanic Mechanic
Releasing Hydraulic Hydraulic Hydraulic
Spindle bearing relieved
Position control Optional Optional Optional
Cooling lubricant supply Optional Optional Optional

Sunday, August 3, 2014

GMT Electro-Mechanical Actuators – U

Electro-Mechanical Actuators – U are meant primarily for use on rotating work spindles where there are restrictions on the use of pneumatic or hydraulic rotating cylinders for the actuation of power chucks, expanding mandrels, collets etc.

It can rotate maximum upto 3000 rpm.

Friday, August 1, 2014

GMT - Electro Mechanical Actuator - UF

Electro Mechanical Actuator - UF have been developed as a time saver for quick and efficient clamping and de-clamping of arbors on machines (milling machines, boring machines etc.) which have steep, self-releasing taper on the spindle. 

Where a number of tools are to be used for an operation, GMT EMA enables the work to be completed in a single set-up. Use of this Electro Mechanical Actuator ensures fast and quick change of tool and cuts non-productive time drastically. Since the operation on the work piece is finished in one set-up, in process inventory is reduced.