Surface grinding machines PROTH


All the main parts of a machine, bed, table, stand, sleds are made of high quality certified cast iron stand has a hexagonal ribs to ensure high rigidity . Casting parts are 2 brindle with emphasis on the elimination of all metallurgical stress.

Movement is limited desk accurate pretensioned stops with springs, so that inadvertent crossing sites and the subsequent damage to the machine is eliminated. Transverse and longitudinal movement of the table provide a double sliding surfaces of the V-shaped, against the surfaces are lined with special sliding material Turcite-B, this is achieved nearly zero coefficient of friction. The surface of the guide surfaces and the slide table is zaškrabán hand, it ensures high accuracy and to achieve the perfect seating pattern between the contact surfaces. High rigidity musculoskeletal, heavy-duty table and the lowest possible value of the deformation and twist - all guaranteed to achieve maximum productivity with high quality cut surface and permanent accuracy.

The definition of minimum throwing spindles are used pretensoned high precision anti-friction thrust and radial bearings. To maintain long-term durability is to use a special lubricant and extremely high-quality sealing bearings.Rigid spindle design allows withstand heavy loads during grinding. Spindle assembly takes place in a fully air-conditioned space, and each spindle is thoroughly tested at least several consecutive hour field tests. The machine is equipped with automatic pressure lubrication system, which through the dispenser with a filter supplying important machines units: sliding surfaces of the rack, vertical displacement screw, bolt lateral displacement, the longitudinal and transverse guide plochy.Stroje can of course be equipped with various accessories - there are constant and electromechanical Clamping plate with control units that allow continuous control of clamping force and demagnetisation, the different types and variations of grinding wheel dressing, cooling systems and for extraction and filtration of particulate matter and dust, etc.

Hydraulic system - extra quiet operation

Two separate hydraulic cylinders are anchored in specific locations with the piston rod, which is enhanced rigidity and stability. This creates a very stable movement of the table and eliminates the swimming table

Special construction of the hydraulic system with respect to the prevention of excessive overheating of hydraulic oil and reduce rebound century has resulted in extra smooth operation table

Hydraulic power unit and pump are separated from the main part of the machine, which provides the following benefits:
a) to prevent entry of burned oil in the machine, which causes stretching and twisting, which may affect the resulting accuracy of the workpiece.

b) prevents any vibrations and vibrations that are created by a hydraulic pump and transferred to the base of the machine and causing a flatter footprint on the workpiece.

- Hydraulic type of motion control table provides a very smooth operation and smooth shifts without shock

-Components of hydraulic system is filtering, which keeps oil free of dirt and prolongs the life of the individual components of the hydraulic circuit

Grinding spinlde
High precision spindle with high stiffness and a special design to facilitate access for maintenance and possible repairs
In order to define the minimum runout spindle used high-precision anti-friction thrust and radial bearings
Spindle runout test is better than 0.0025 mm
Remove the spindle is quiet and vibration free