Description of the hall and technological line

The Aristo Eco Home production hall with an area of ​​3,000 m 2 was built in 2021. The location of the hall is not accidental. The hall was built in the Łódź Special Economic Zone in the industrial district of Skierniewice, in the central part of Poland, from where there are very good transport connections. The close proximity of highways favors good logistic organization in cooperation with contractors.

There is a numerically controlled line set up in the hall, starting from cutting wood for prefabrication, assembling the structure, covering the structure with boards, then cutting holes and cutting off the board protruding beyond the outline of the structure. 

Dietrich's design program is used to design and later translate the completed project into the language of numerically controlled machining centers. 

The prefabrication production line consists of: 

A. Cutting and milling center

The cutting and milling center consists of a STROMAB CT600F cutting and milling device, also known as a cutting optimizer. The capacity of the machine is from 6 to 10 m³ of raw material / 8 man-hours. The loading beds and the area behind the cutting chamber enable loading and unloading of raw material with a length corresponding to the length of the production line work tables - in this case about 13 m. 

Raw material processed in the cutting line area:

KVH® wood (wedge-jointed wood) C24 - four-sided planed construction wood, dried in drying chambers to 15% humidity and sorted according to strength. KVH® is a coniferous wood product with bevelled edges and a length of up to 13 m, which was defect-free and re-glued during the processing process. 
Solid graded wood - each of the above types of wood is graded high-quality wood 
BSH wood - KVH wood, glued in layers
Trio and Duo glued timber - as above with a certain number of layers - two or three
Highly processed wood in the form of I-beams 
LVL wood - glued wood from veneers
Each of the above types of wood is certified wood, sorted in terms of quality. 
The Riedex DM-350 extraction unit with a capacity of 8,000 m³/h is dedicated to removing chips resulting from wood processing. The extractor is built in accordance with European and national regulations and is fully compliant with Atex 114 and 153 guidelines, ensuring safety in terms of explosive dust and air mixtures.

B. Line for prefabrication of partitions

The manufacturer of the line is MBA (Modular Building Automation). The MBA is a “joint venture” between J J Smith & Co (Woodworking Machinery) Ltd & H&M Houtbewerkingssystemen BV The line consists of 6 positions:

Station No. 1 for formatting the partition

The formatting station consists of a work table combined with a traveling bridge, equipped with two nailing modules - BeA pneumatic nailers. The previously prepared wooden structure elements are joined together in a semi-automatic system. The table operator moves between the left and right rails of the track, following the driving bridge, manually placing posts between the foundation and the cap - the left and right beams closing the partition. 

A numerically controlled sewing and milling bridge can move freely above the wall formatting table.


Work table No. 2 - internal partition covering

The final inner layer is formed in the area of ​​the second table. Covering layers are applied to the surface of the prefabricated element using vacuum lifters. Construction and finishing boards are sewn to the structure using modular staplers. At the same time, a numerically controlled saw and end mill cut the boards appropriately. Work table No. 2 also serves as a rotary table. This table allows you to vertically align the prefabricated element and throw it onto the receiving table no. 3

Sewing and milling bridge - Bridge "M1":

The sewing and milling bridge is a numerically controlled machine tool in the form of a mobile gantry moving above the table 1 and 2. The beam connecting the transport trolleys is the basis for sewing modules, heads guiding saws and cutters. The feed of the bridge along the table 1 and 2, with the simultaneous feed of the sewing or milling and cutting tools, is carried out automatically, and the bridge operator, who monitors the work on the work desk, is responsible for the progress and pace of work.

The following tools are located on the bridge beam:

Cutting saw
Upper spindle end mill 
BeA R130 modular nailer
Modular screwdriver
Modular staplers 
The task of sewing and milling bridges is to process pre-formed panels - wall partitions, roof panels and ceiling panels. Formatting is done using nailers and pneumatic staplers, joining the sheathing boards with the wooden frame. After completing the mechanical joining process, the raw material is formatted using both saws and upper-spindle milling machines. Post-production dust appears in the machining process. The sewing and milling bridge is equipped with a Riedex DM-350 drillings removal system from cut and milled surfaces with a capacity of 8,000 m³/h. The extractor is built in accordance with European and national regulations and is fully compliant with Atex 114 and 153 guidelines, ensuring safety in terms of explosive dust and air mixtures. The air from the entire dedusting system is filtered to the extent that it can be returned to the production hall.   
Receiving table - table no. 3.
Receiving table No. 3 is a transport table allowing the collection of a vertical building partition and its rotation, revealing the unfinished external side of the element.
Work table no. 4
Working table No. 4 is a table analogous to table No. 2. As in the case of table No. 2, above the tables 4 and 5 (plumbing table) there is a traveling bridge "B" with equipment similar to that of the bridge "A".
Sewing and milling bridge - "M2" bridge:
Analogous to the "M1" bridge
Work table no. 5
Work table no. 5 is an extension of the production line - it allows long-term works related to the façade to be performed there. An additional task of table no. 5 is to verticalize the building partition before transporting it using an overhead crane.
Work table no. 6
Work table no. 6 is used for formatting ceiling structures. After assembling the frame, the prefabricated element is moved to table no. 2 of the line in order to cover the OSB board using a CNC bridge.