The automation solutions expert Schmalz announced the release of two innovative vacuum blocks, the VCBL-R and VCBL-N, for grid and nesting-based computer numerical control (CNC) wood processing applications. Depending on the desired use case, both vacuum blocks can be used interchangeably between grid and nesting tables. Adding or removing a nesting insert reduces time and manual labor when switching between applications. The flexibility offered by this functionality is intended to save woodworkers valuable time, reduce material waste, and improve production.
According to Schmalz, the laborious and time-consuming task of modifying setups when switching from grid tables to nesting tables during CNC wood processing is over. Image used courtesy of Schmalz
Switching from Grid Mode to Nesting Tables
Over the last twenty years, there has been a significant advancement in CNC wood processing in terms of automation, accuracy, and productivity. Modern CNC machines are outfitted with advanced software for automating toolpath planning and execution, integrating with CAD/CAM systems (Computer-Aided Design/Computer-Aided Manufacturing), performing multi-axis operations, and optimizing design-to-production processes.
In contrast to earlier systems, which mainly relied on manual setup and calibration, today's CNC machines are highly automated. Technological advancements like multipurpose vacuum tables, interchangeable suction systems, and intelligent sensors have significantly reduced setup times, improved adaptability, and facilitated faster project changes.
The key draw of Schmalz’s upgraded vacuum block series is the ability to switch from grid to nesting table via adding or removing a nesting insert. Tedious manual intervention must be performed to switch between suction cup-based grid clamping and sheet-vacuuming nesting fastening. To maintain pressure, technicians have to remove and reinstall suction cups when transferring between processes, position them for particular product layouts, and seal any unneeded vacuum zones. The complexity and time needed for setup modifications may increase if the CNC machine needs to be reset due to variations in elevation and flatness between grid and nested setups.
Schmalz’s VCBL-R and VCBL-N vacuum blocks provide a membrane-coated suction plate to protect parts. Image used courtesy of Schmalz
Using vacuum blocks that can fluidly transition between grid and nesting tables can increase productivity by minimizing the need for human interaction. Operators can transition between grid fastening and nesting more rapidly because of these blocks' quick repositioning and adjustment capabilities, eliminating the requirement for complete removal and reconfiguration. These blocks simplify setup, remove the need to seal unneeded zones, and reduce downtime by automating vacuum zone control and sustaining suction in all necessary places. As a result, the process becomes more effective, enabling faster transitions and increased throughput for CNC operations.
Features and Benefits
First in the lineup is the VCBL-R, designed to accommodate grid-based CNC wood applications and nesting table-based applications via an optional nesting insert. This insert allows customers to adhere the suction cup to the nesting plate. This flexible tool is ideal for conventional grid setups with dimensions 30 and 40 mm, groove widths between 6 to 7.5 mm, and groove depths of 6 to 7 mm.
Along with the VCBL-N, the VCBL-R features height (25 to 132 mm) and dimensional flexibility to suit specific workpiece requirements and an optional accessory hose connection for grid table positioning, even if the suction cup is without a suction point. Both vacuum blocks are designed for 3-axis and more intricate 5-axis machining.
The VCBL-R and VCBL-N incorporate a membrane covering the suction plate to protect from the ingress of dirt, ensure maximal frictional forces, optimal sealing, and improved workpiece protection.
The VCBL-N accommodates working heights between 32 to 132 mm and, like the VCBL-R, facilitates sensitive unloading and loading of heavy, extensive parts via an optional lifting system. This system also helps to protect the suction plate’s sealing edge from wear and tear.
