Portal milling machine in special design for battery boxes (high-voltage storage) in the automotive industry

01/24/2020

Customer industry:
Large-scale production of battery boxes for high-voltage storage systems in the German automotive industry

Project specification:
The customer wants a machine for measuring (probing) and milling raised weld seams on battery boxes for high-voltage storage devices. Two different types of these battery frames are processed. The machine is integrated into a production line and equipped using robot technology.

Solution from SIRtec:
Manufacture of a portal milling machine in a special design. It is carried out with two clamping stations (1 x top, 1 x bottom).
The profile height of the battery box is measured by an optical triangulation sensor. A motor spindle carries out the machining of the MIG weld seams.
The machine is loaded parallel to machining in order to reduce non-productive times.

Customer benefits:
The customer integrates the portal milling machine into the processing line so that battery boxes can be processed in 3-shift, fully automatic operation with a technical availability of 98% for a German automobile manufacturer.

Two clamping stations for processing the top and bottom sides
Pick-up tool change station with Blum laser for tool length and wear measurement
Laser for measuring the battery box profile height

 

Technical data Portal milling machine in special design for battery boxes in the automotive industry

Travels
X = 5,800 mm
Y = 2,000 mm
Z = 300 mm

Machine power
Feed speed axes X- Y 30,000 mm / min.
Z axis feed rate 25,000 mm / min.
Max. Working speed 25,000 mm / min.

Laser measuring system
Optical triangulation sensor, make Keyence

Main spindle
Motor spindle, manufactured by Jäger
Max. Spindle speed 24,000 rpm.
Tool holder HSK 50 E

automatic tool changer
Pick-up tool changer, tool storage capacity 6 tools (optionally expandable to 10 places)

Furnishing
Minimum quantity lubrication through the milling spindle
Tool length control (tool breakage control)
Chip conveyor
automatic central lubrication of all axes including collecting tray for collecting old fluid grease
Work area cover to contain the flow of chips and the noise
Interface on the Y-axis for attaching a digital camera

control
Siemens 840 D