Periodic Reporting for period 1 - SMARTSTAIR (Robotic Production of EPS Formwork for cost-effective Concrete Stairs)
Período documentado: 2020-03-01 hasta 2021-02-28
The SmartStair project aims to bring goals and means to converge, starting with a specific niche which has long been challenge to concrete manufacturers: Staircases. Building customized formwork for staircases is very expensive and although CNC machining of parts for assembly is now an integrated part of the process, staircase formwork continues to be characterized by time and resource intensive craftmanship. Furthermore, current methods of production waste huge amounts of wood material, whereas the SmartStair production cell is based on wire cutting of low-cost EPS (Expanded Polystyrene), most of which can be granulated and reused.
Specialized formwork based on expert knowledge relies on a close understanding between the commissioning party and the formwork producer, where details and unique features must be agreed upon. Contrarily, robots are exceedingly efficient but only insofar as they operate in predictable environments. The SmartStair cell will make use of Odico’s proprietary Sculptor software, which enables easy translation of customized input into complex robotic output. Together with Odico’s wire cutting tool and a range of easily changeable tools, the SmartStair cell is capable of highly flexible operation and will cancel the gap between special and generic. This means that pre-manufacturers can offer sought-after custom elements at a feasible price. The SmartStair cell will thus contribute to a significant increase in productivity in the construction industry and help meet the demand for better infrastructure and architecture.
In the first reporting period from 01/03/2020 to 28/02/2021, we have achieved the following results:
1. Preparation and assembly of a containerized work platform for housing the industrial robot and an automated tool changing system.
2. Development, integration and testing of a proprietary wire cutting tool
3. System design, integration and testing of a coating system
4. Development, integration and testing of a sanding tool for surface refinement
5. Development and preparation of a milling tool for edge finishing
6. Adaptation and augmentation of the Cloud-based software solution to translate the parametric formwork design input into robotic movement output through the Sculptor® robot control architecture.
7. A graphical user interface (GUI) design
8. System tests and production of formwork with different levels of detailing and end user defined typology constraints
The containerized platform consists of two standard open-sided 20-foot containers. One container houses the industrial manipulator and the associated hardware while the other container is placed parallel to the housing container and functions as a workstation on which to place the work object (i.e. EPS blocks). In this configuration, the system can perform all operations in an automated fashion – i.e. cut the EPS in a sweeping motion, apply a surface treatment, refine the surface, and perform edge-finishing for perfect encasement – based on inputs and prompts from a superintendent via a simple tablet interface.
The work envelope is designed to accommodate the majority of staircases produced by pre-manufacturers. With the motion constraints of the robot and the width of the wire tool, tests have validated that staircase designs of > 4,2 x 1,2 metres can be produced.
Surface quality is paramount to pre-manufacturers since staircases provide use surfaces. For this reason, much testing has been done to develop a custom coating solution with an surface with good release properties and good durability. As of RP1, a coating solution has been implemented and tested with a non-toxic, water-based self-crosslinking material. Since surface treatment is so essential, we have implemented the system in an open-ended way such that adjustments can be made to both application and material composition based on more extensive use case data and end user feedback during RP2.
To achieve perfect levelness, a sanding tool has been implemented and a milling tool which extends the height of the formwork has been designed to ensure perfect evenness of the sides for perfect encasement.
As of RP1, a beta version of the SmartStair production cell has been built and its primary functionality validated.
With SmartStair, the central shape-giving operation is counted in minutes instead of days. A 4-meter piece of staircase formwork takes 30-40 minutes to cut. Today, lead times can be up to four weeks or longer for specialized formwork. More importantly, the SmartStair method does not differentiate standard from specialized formwork and particularly this no-cost alternating capacity with no need for production line conversion has high breakthrough potential.
The operation of the cell does not require artisan skill since everything is entered on a simple tablet interface after which the Sculptor software translates the input into robotic movement. After that, everything takes place automatically.
The SmartStair project thus changes the benchmark for productivity in concrete staircase manufacturing by making available a user-friendly, automated approach to formwork production that will increase the viability of ambitious architecture and infrastructure by bypassing costly links in the value chain.
The target for the remaining part of the project is to successfully complete pilot testing onsite with our concrete partners and to have a marketable product ready 3 months after the project ends in 2022.