Flexodrill
Flexodrill
FLEXODRILL is a unique solution that allows angled holes to be drilled, e.g. in a valve block with a CNC controlled multi-operation machine. Valuable machining time can be saved as the number of times the part needs to be clamped is reduced.
FLEXODRILL is developed by Lalmek Hydraulics to solve its own needs while manufacturing hydraulic blocks.
FLEXODRILL can in one operation drill different holes at different angles and in both two and three dimensions.
Under the right conditions FLEXODRILL can drill a hole that is up to 20 times longer than the drill diameter.
FLEXODRILL is available in 3 different sizes: FD11, FD16 and FD20.
Sizes and measurements
| Size | FD11 | FD16 | FD20 |
| A | 16 | 20 | 20 |
| B | 60 | 92 | 118 |
| Drill diameter | 1,5-5 | 2,5-11 | 5-14 |
| Collect (Regofix) | ER11 | ER16 | ER20 |
All measurements are stated in millimetres.
Example of drilling
The following shows sections from a hydraulic block where FLEXODRILL has been used to drill several angled holes.
Figure 1:
Figure 1 shows an example where there are higher demands on precision at positions (a) (b) and (c).
Positions (b) and (c) must go through the hole wall so that they are connected to the longer hole. For (a) it is important that the hole does not breakthrough the wall or that the wall is too thin to later be damaged by the hydraulic pressure.
Figure 2:
In figure 2 the holes are drilled 15° in different directions from the same exit hole.
Figure 3:
Figure 3 shows an advanced hole, which due to the length of the drill, is difficult to drill compared with the narrow diameter of the drill.
Figure 4:
In figure 4, a 5 mm hole is drilled to a depth of 8.5 mm. The hole is then tapped with a M6 tap to a depth of 5 mm.
| Step 1: | Step 2: | Step 3: | Step 4: |
|---|---|---|---|
| Drill the pilot hole. | Lower Flexodrill in the pre-drilled hole. | Circular polar movement. | Simultaneous movement on 2 or 3 axes. |