The control unit as an interface between the CAD software and the CNC controlled lathe.

The CNC control unit is located in a solid aluminium casing and contains a micro processor and the output stages for the step motors.

   It controls the step motors of both the axles drives and the drive for the main spindle using the PC data and, with two freely useable output relays, additionally offers the possibility to control an automatic cooling unit or signal display, for example.
The installed mains supply circuit makes it possible to connect directly to the 220 - 240 V mains voltage. The data transfer from the PC to the control unit is effected via an RS 232 interface. All connecting cables required to control the main spindle, the step motors and the limit switches are pre-assembled and equipped with suitable connectors, and are part of the scope of delivery.

CNC simulation     If requested, the travel distances of the tool are simulated in the graphic window. In this way, faults in the programming can be recognised in time.

Manual work     With the PD 400/CNC, the handwheels are replaced with high-precision step motors. Manual machining is possible with the help of the cursor buttons, since the step motors can be operated manually.

Software installation    The PC software is supplied on a CD ROM. The problem-free installation is effected automatically under Windows®.

        Simple creation of workpiece geometry

   When the program is started, the CAD window initially appears on the screen. The contour of the workpiece is created in the usual Windows® environment.
In the graphic, colour elements help to show the difference between lathe chuck, blank and designed workpiece.
Comprehensive aids make it easier for the user to operate the program; in addition to use of the mouse, it also supports entry of co-ordinates (absolute and relative). It is possible to import existing files in the current data formats (e.g. dxf or hpgl). 

   Technology information is allocated to each character element. Various processing speeds and manual tool replacement are, for example, possible when machining the workpiece.

   Automatic generation of CAM data

   The finished drawing of the tool is converted, by a mouse click, into the instruction set for the machine. So, machining can be started immediately. The instruction set generated in this way is in accordance with DIN/ISO 66025 and can be manually edited and exported. Conversely, the system also permits importing or complete self writing of data sets.

   Note:

   PC or laptop are not part of the scope of delivery. Minimum requirements for the hardware: Pentium processor with 400 MHz frequency (or comparable), high-quality graphic card (64 MB RAM) and at least 40 MB free hard disc storage.

Lathe System PD 400/CNC - Technical Data:

Centre distance		400 mm
Height of centres		85 mm
Spindle take-up		MK 3
Spindle aperture		20.5 mm
Spindle rotation precision		5/1,000 mm
Lathe chuck		Precise RÖHM 3-jaw chuck, centrically tensioning (up to 100 mm)
Sleeve		MK 2, with scale
Steel holder		Multiple steel holder with height-adjustable holder elements
Spindle revolutions		Selectable with switch (two-stage) and by placing drive belt: 80 - 160 - 330 - 660 - 1,400 - 2,800 rpm
Drive		Induction motor with 550 W
Spindle drive Z axis		Recirculating ball spindle with 4mm inclination, flank diameter 12 mm. Step motor with 1.8 A and 50 Ncm dwell moment; travel distance: 300 mm
Spindle drive X axis		Recirculating ball spindle with 2.0 mm inclination, flank diameter 8 mm.Step motor with 1.8 A and 50 Ncm dwell moment; travel distance: 70 mm
Control of the step motors		via CNC control unit (included in scope of delivery)
Power supply		220 - 240 V / 50 Hz-mains voltage
Software		on CD ROM, installation under Windows®
Size (L x D x H)		PD 400/CNC: 900 x 460 x 300 mm Control unit: 450 x 270 x 60 mm
Total weight		PD 400/CNC: approx. 45 kg Control unit: approx. 4 kg