CNC honing machine for flat-topped honing of cylinder blocks of internal combustion engines.

The "Honmaster HM20" is a modern honing machine designed for honing cylinders of internal combustion engines in both inline and V-configurations in automatic mode. The machine can also be used in various sectors of mechanical engineering where there are tasks related to honing round-section holes.

In creating the machine, the experience and developments of flagship companies in honing, such as Rottler (USA) and Sunnen (USA), were taken into account. This is reflected in the similarity of the external layout. However, in many aspects of the implemented functionality, the machine already surpasses foreign models.

The machine's column can automatically move along the X and Y axes, which has increased the working area and allowed for the processing of larger workpieces. The Z-axis drive is equipped with a servo drive, enabling high precision in movement and preventing collisions between the honing head and the cylinder block at the lowest point.

The machine features an automatic impact protection system against errors by the operator or unrecognized obstacles in any part of the cylinder. When starting a cycle, the machine checks the hole for obstacles, helping to preserve the cutting tool, stone holders, and the workpiece from damage.

The radial feed (expansion) of the honing stones during honing occurs automatically. The degree of expansion is programmed through the CNC system. Thanks to this feature, the processing of the workpiece occurs precisely to the specified dimensions with high accuracy.

At the end of the cycle, the machine automatically retracts the honing stones during the last stroke to prevent scratches or marks in the hole from tool withdrawal.

The built-in active control and shape correction system monitors the geometry of the cylinder during processing. In case of deviation from the specified shape, the system identifies the problematic area and automatically performs short strokes in that location. Additionally, the system displays a graph on the monitor screen showing cylinder processing relative to loads and phantom movements of the tool, allowing visual tracking of the active control process.

The Hontronik ACNC v2.0 CNC system, developed in-house, allows for flexible management of the technological process and adaptation to customer requirements.

The machine is equipped with an integrated coolant supply system with automatic activation. The coolant undergoes several stages of filtration. For rough filtration, the machine is equipped with a magnetic separator to remove metallic chips from the liquid, while fine filtration is conducted using full-flow fine filters. The capacity of the coolant tank is 200 liters. The tank is located at the bottom of the machine and can be rolled out for maintenance along built-in guides.

The machine is equipped with an automatic lubrication system for ball screws and linear guides. The lubrication station is linked to the CNC system. This system extends the service life of linear guides and ball screws, thereby increasing the overall reliability of the machine.

The "Honmaster HM20" honing machine meets all modern standards and allows for a wide range of honing operations with high precision and specified surface roughness requirements.