DDL Linear Boards, the integration of linear motor technology in a finished structure that allows for immediate use.
The term DDL means the direct coupling of a linear motor with the moving part of a mechanical system, in this case, a board truck.
Most transmission organs like screws, pulleys, belts, gear motors, etc. are eliminated in this configuration.
Therefore the system is more compact and less subject to mechanical wear: the only contact element between the moving part and fixed part is the guiding system.
Main advantages:
- Limited maintenance;
- Fewer applied components;
- No clearances;
- Increased shifting speed;
- Improved system response;
- Fluent and silent movements;
- High positioning precision.
Functional characteristics
The Linear boards of DDL series are a complete system consisting of a sturdy and precise mechanical structure, within which a linear motor is installed.
The magnet is secured to the base and forcer applied to the truck.
The power cables are wired and secured in their movement, by a cable-holder chain; the measurement system is also integrated inside the board (precision optical scale).
The guiding system is made with profiled guides and ball bushing pads
DDL boards are custom developed and built, keeping in consideration the main perating parameters: stroke- applied loads - thrust force - speed – positioning precision.
The complete package is supplied, which includes: driver, axis control system and installation assistance.
| Model | Nominal thrust (N) | Peak thrust (N) | Transportable load 1 G (kg) |
| DDL 1 C | 57 | 170 | 10 |
| DDL 1 L | 104 | 340 | 18 |
| DDL 2 L | 171 | 560 | 30 |
The positioning precisions and repeatabilities vary according to the type of transducer used.
- Absolute optical scale
Resolution 0.001 mm – Repeatability +/- 0.001 mm.
- Incremental Magnetic scale
Resolution 0.01 mm – Repeatability +/- 0.01 mm.
Sizes and strokes (values expressed in mm)
| Model | Stroke | Length | Width | Thickness | Truck useful area | ||
| C | A | B | B1 | H | D | D1 | |
| DDL 1 - C - 140 | 140 | 390 | 160 | 192 | 80 | 140 | 132 |
| DDL 1 - C - 270 | 270 | 520 | |||||
| DDL 1 - C - 400 | 400 | 650 | |||||
| DDL 1 - C - 530 | 530 | 780 | |||||
| DDL 1 - C - 660 | 660 | 910 | |||||
| DDL 1 - C - 760 | 760 | 1010 | |||||
| DDL 1 - L - 190 | 190 | 520 | 160 | 192 | 80 | 220 | 132 |
| DDL 1 - L - 320 | 320 | 650 | |||||
| DDL 1 - L - 450 | 450 | 780 | |||||
| DDL 1 - L - 580 | 580 | 910 | |||||
| DDL 2 - L - 320 | 320 | 650 | 200 | 232 | 80 | 220 | 172 |
| DDL 2 - L - 450 | 450 | 780 | |||||
| DDL 2 - L - 580 | 580 | 910 | |||||
| DDL 2 - L - 680 | 680 | 1010 | |||||
Examples of special applications
Linear system with Ironcore motor made with commercial extruded material.
Linear System X Y with Ironless and Ironcore motor.
Sale and Technical Assistance:
BFP S.r.l. - Via Modorati, 1- 20900 Monza (MB) - Italy
commerciale@bfpsrl.it - Tel. +39 039 2028022