HTZ Holztrocknung Oberlungwitz GmbH
High-quality timber parts made in Saxony for cars made in Ingolstadt - produced on Reichenbacher Hamuel machines with Siemens automation technique.
Renewable resources for cars as the trend-setting technology
Derived timber products in automotive engineering bring up this interesting question: What is timber still (or again) used for in modern cars? The answer: For interior design elements such as instrument boards, steering wheels and door interior lining and also in areas where it makes sense to replace plastics or metals, for example as trunk floor!
The advantage for all of us: Wood is a regrowing resource and thus also contributes to climate regulation during its growth. As wood used by HTZ comes from continuous thinning of our forests, natural resources are hardly affected. In the entire production process the material covers a maximum distance of 600km: from logging via production in Oberlungwitz to final assembly on the assembly line of the automotive manufacturer. After a car’s life this trunk floor can be thermally disposed, and the circle is complete.
Working heads
The working heads are mounted to 6 slides (Z-slides), 4 are in the front and 2 in the back of the gantry.
Vertical routing heads
At the Z-axes a motor spindle with automatic tool changing system is mounted. In the topmost Z-position a tool change can be carried out, independent from the other aggregates. Each motor spindle has a separate extraction cap with a connection diameter of 160mm. The connection is mounted at a height of approx 3,000mm and is controlled by a pneumatic shut-off valve.
Aggregate group 1 and 2 (front)
2x routing head, 14 kW with clamping unit and 2x tool changer with 12 places.
Aggregate group 3 and 4 (back)
1x cardanic working head (B/C-axis) with mounted routing head, 14 kW and clamping unit, 1x tool changer with 12 places for routing spindle and 1x multi-spindle drilling unit MRB 25/T32 with vertical alignment of the individually controllable drilling spindles for tracks of punched holes and constructional drillings in T-shape.
Working area
2x 1,320 x 3,000 x 200mm
1x 2,640 x 3,000 x 200mm
4x 1,320 x 1,485 x 200mm
Table size each machining table = 850 x 3,250mm (X x Y)
Grooved area each machining table = approx 2,640 x 3,025mm (X x Y)
Table divided into four clamping areas, each 1,320 x 1,500mm (X x Y)
Multichannel processing
Machine table 1 (Y1) is assigned to group 1 and 3 units
Machine table 2 (Y2) 2 and 4 associated with aggregates group
Per channel or machine table can be different part programs completed works. Immediately after the start signal is the processing in the respective channel.
Aggregate encapsulation
The movements of the working units (lateral and vertical movement) at the portal and the movements of the surface tables run within the protective enclosure, height from about 2,200 mm (without ceiling panel). Access is from the front side. Touch the tools, crushing and shearing points between moving machine parts are prevented by the greatest possible extent. In addition, the enclosure protection against fly-away parts, noise and dust. Between the machining table a Central Scotland is installed
Processing of routing parts of any kind of wood composites on the state-of the-art machining centre ECO 2830-C
From the unmachined part to the ready-to-install trunk floor
At the production site Oberlungwitz up to 800 parts are produced per day. The vertical range of production goes from the unmachined plate via the routing process to the ready-to-install trunk floor including fabric cover, hinge and handle elements. The following quality control, packing and dispatch on site provide for smooth delivery and further processing at the automotive manufacturer. Trunk floors made of wood composites are reasonably priced, flexible in design and cause minor tool costs.
Reliable technique in wood dust environment
“You can’t make an omelette without breaking eggs!” Despite efficient modern extraction devices machine components and machine control panels in the woodworking industry as well as industry-PC based operator panels are always exposed to a high dust and chip impact.
