CMA tec presents the new

adjustment for series ball valves

The DIAMANTE ball valve grinding machines were designed for working the ball valves coated with hard material or CBN with metal to metal seals.

The grinding cup wheel can fit either diamond stones or pads and is designed for machining, with just one
All models are equipped with NC SIEMENS 840 D and with RENISHAW sensor for rapid cup/ bearing centering.

The larger version can even work spheres of ø2400 mm.

WORKING METHOD

Our machines are tailored on the Customer's requirements, which is possible thanks to our skilled and experienced Technical Department. We are also able to produce 100% of the mechanical parts internally in our Machinery Tool Department.
The complete assembly of the DIAMANTE is carried out in our workshop, then our team of qualified technicians take care of the start-up at the final Customer's Premises.

TRAINING

The course is led by our electronic technician and aims to instruct the client on the correct use of the machine. During the training machining test on spheres are carried out.

TECHNICAL SPECIFICATIONS

SPINDLES

the sphere transmission spindle was designed to provide maximum accuracy when working (roundness 0.01 ) and is powered with a 70 kW torque type motor with the DIAMANTE 64" version to guarantee maximum torque at low revolutions.
The DIAMANTE 24" and 40" versions are equipped with SIEMENS brushless motors. The spindle is equipped with a universal socket system to guarantee the machining of all types of spheres. The grinding spindle is equipped with inclined CNC axis (stroke ± 5 mm) to enable excellent cup/sphere centering.

GRINDING CUP WHEEL

the grinding tool holder cup wheel was designed for machining, using the same tool holder, the largest range of valves. The tool is assembled to an adjustable support. The cup wheel can be equipped with diamond pads or abrasive stones. It has been designed with an extremely rigid structure which during the machining, enables the achievement of roughness below 0.2 mm.

TAILSTOCK

designed to guarantee maximum rigidity and accuracy when working, it is equipped with a NC-managed hydraulic compensation system.
PARAMETERS 24" 40" 60"
TRAVEL Z-X-X1 mm 350x400x5 800x1500x5 800x2200x3
MACHINING RANGE mm Ø320/Ø950 Ø600/Ø1500 Ø700/Ø2400
SPINDLE HOLDER PIECE        
SIZE mm Ø400 Ø600 Ø600
MAX LOADING CAPACITY kg 1500 10000 20000
SPEED MAX rpm 400 200 80
ABRASIVE GRINDING SPINDLE HOLDER        
SPINDLE SPEED rpm 200/3000 150/1500 50/500
SPINDLE TAPER SIZE ASA-11 ASA-15 ASA-15
SPINDLE MOTOR kW 22,5 50 70
SPEED        
RAPID TRAVERSE SPEED (Z-X-X1) m/min 8 8 3
CUTTING FEED SPEED mm/min 0,5/1000 0,2/500 0,2/500
POSITIONING ACCURACY AXIS mm +/- 0,007 +/- 0,007 +/- 0,007
REPEATIBILITY AXIS mm +/- 0,004 +/- 0,004 +/- 0,004
OTHERS        
POWER CAPACITY kVA 70 90 190
COOLING TANK CAPACITY L 600 1500 3000
DIMENSION m2 12 35 45
MACHINE WEIGHT kg 14000 50000 75000

CMA tec - DIAMANTE