CNC spot-facing, milling and drilling machines

ZAH 900/900L/2500 CNC with a rotating workpiece

 

 

The possibilities of workpieces clamping of internal and external clamps or using the chuck.

 

Tool heads are designed with respect to given technology and customer requirements.

 

 

 

Machining centre with centrally located mandrel for aligning, drilling and turning both ends of the workpiece onto one clamping. The overall concept of the centre is focused on minimum installation dimensions with maximum utilization of workspace. Cast iron structure of the lathe bed, slides, tool heads and headstocks is essential for the overall rigidity of the machine and permanent stability in continuous operation.
The machine is equipped with four slides with axis X1, Z1 and X2, Z2 which are designed using sliding guides. For the ZAH 650 CNC machine the linear guide is used on the longitudinal and transverse supports.
The most important design feature is the design of the central mandrel for which it has been managed to achieve very compact dimensions with hydraulic clamping, with internal additional lubrication using oil mist, and the precise positioning.
This arrangement allows very precise shaft machining with one clamping at both sides.
Machines with this principle of a central mandrel achieve the highest possible accuracy in work centre alignment and (run-out) of the turned surfaces from both sides and it cannot be achieved any other way. Therefore, the above centres are in great demand, especially in the automotive industry for the manufacture of gearbox components and related parts.

Next level of centre is integration of automatic workpiece replacement, eventually merging into multiple production lines using portal loaders or robots.

 

Technical data
  ZAH 900 ZAH 900L ZAH 2500  
Operating range
clamping diameter 5-125 mm
length of workpiece (140) 180-900 450-1300 350-2500 mm
stroke in axis X1, X2 250 250 320 mm
stroke in axis Z1, Z2 900 1300 2500 mm
fast feed in axis X1, X2, Z1, Z2 30 m/min
maximum shutting force in axis X1, X2, Z1, Z2 5 kN
Spindle
spindle end collets (1) 2x 125/100/80/65/52 Hainbuch
maximum rpm 0-4000 1/min
maximum output 16 kW
Tool head – servomotor drive
number of positions 2x 12  
diameter of the clamping pin according to DIN 69880 VDI40 mm
dimension 25x25 mm
Tool head – rotation tools
rpm range 0-3000 (6000) 1/min
maximum torque 30 Nm
Automatic loading
stock of workpieces - input / output 30/30 ks
exchange time 10 s
Standard control system: SIEMENS SINUMERIK 840 D-SL