Multi spindle DLG

The Multispindle Drilling Machines

The high speed drilling machine with mechanical linear guides
With an ever increasing demand for a greater hole count per panel, the new high power linear motors offer a significant reduction in the drilling cycle time.

Robust, interlocked base unit

High accurate mechanical linear guides in all 3 axes

High dynamic Linear motors for the X- and Y-axes, (Z-axes as option)

The DLG series – mechanical linear guides

To maximize the advantage of the high power linear motor with it´s superior dynamic characteristics, LENZ has incorporated specially developed mechanical linear guides. With this proven machine concept, even a 6 spindle machine can achieve a drilling frequency which was previosly unattainable from a single spindle machine.

The latest Linear Guide technology
For more than one hundred years Linear Guide technology has been based on a re-circulation ball principle. Each ball within the assembly is pushed against the next creating movement. Within the latest generation of Linear Guides, used by LENZ the balls are mounted in a chain. The chain eliminates the direct re-circulation effect by creating a space between the indivdual balls. This provides very smoth movement and ultra low mechanical wear of the Linear Guides.

CNC Control Systems
For one and two spindle machines the Sieb & Meyer CNC and the associated electronics are mounted inside the machine base which can be easily pulled out from the front for service access. The monitor and keyboard can be optionally mounted on a moveable arm. For the three and more spindle machines the CNC is mounted in the back of the machine. LENZ machines are offered with either the Sieb & Meyer PC based CNC 48.00 or the CNC 84.00

The variable clamping system…
is capable of excepting pin diameters from 3 to 5 mm. The front pin is secured with the carbide prism and checked for exact positioning.

Micro drilling pressure foot
A pressure foot with the smallest opening closely encircles the drill bit to ensure the most accurate drilling of microfine holes. During toolchange sequences, this pressure foot swings away from the drilling position to the tool change position, thus permitting full access to the drill bit.

Highest dynamic – Linear motor for the Z-axis
Virtually friction free linear motor driven X– and Y-axis have been standard specification on Lenz machines for a long time. This drive concept, with all its benefits is also now available for the Z-axis. High dynamic – friction free – perfect for drilling micro holes and blind via’s. For exact depth controlled drilling and routing Lenz has developed a new pressure foot mounting. Like the spindle holder the pressure foot is also guided with linear guides. This construction provides a rigid connection of the pressure foot, which is needed for high accuracy depth controlled drilling and routing.

Constant drill breakage monitor
The drill bit is constantly monitored during the drilling cycle. As soon as the drill bit monitor detects a broken drill the programme is interrupted and the breakage is recorded. The drill is replaced and the drill programme restarts – automatically, without operator intervention.

Laser Drillcheck System
The LENZ Laser measuring system checks each drill bit for diameter, run out and length. These measurements are checked against pre-programmed tolerances. If any of the measurements lay outside of the tolerance band, the drill is replaced and a new one selected. In conjunction with the broken drill monitoring system, LENZ drilling machines offer consistently reliable operation.

Perfect drilling of Special materials…
with the CNC controlled Micro Lubrication System – MLS The systems enables a significant improvement of the drill cycle time (reduced by up to 50%) and an increase of tool life, by lubricating/cooling the tool. By injecting a controlled micro pulse of lubricant into the pressure foot exceptional hole quality is achieved, specially in plexi glass. With various types of lubricants a whole range of materials can benefit from the micro lubrication system.