Good Quality Deephole Drilling - TSK21200 CNC Heavy Type Deep Hole Drilling And Boring Machine, cylinder boring machine – Premach

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Function Description

The machine tool is suitable for processing large hydraulic cylinders, high-pressure boiler tubes, pipe molds, wind turbine shafts, ship transmission shafts and nuclear power tubes.

According to the characteristics of trepanning process, the machine tool is designed to be equipped with relevant parts, special cutter rods, cutters and special trepanning parts, so that the machine tool is more suitable for deep hole trepanning process.

There are two process forms during processing:

A. workpiece rotate, cutting tool reverse rotating and feed;

B. the workpiece rotates and the cutting tool does not rotate but only feeds.

Drilling or boring diameter less than Φ 210, the BTA internal mental chip removal process of oil pressure head supplying cutting fluid, discharging chips and cutting fluid in the inner hole of drilling/boring rod is adopted.

During boring and rolling, the boring rod is provided with cutting fluid to discharge cutting fluid and metal chips forward (at the head of the machine).

During trepanning bigger holes, the process of external chip removal is adopted, the trepanning rod does not rotate and the workpiece rotates. During trepanning smaller holes, adopting the internal chip removal process, both the trepanning rod and workpiece can be rotated.

Technical parameter

Machining Accuracy

Machining Accuracy of machine (related to workpiece material, heat treatment condition, cutting parameters and cutting oil):

When drilling: aperture accuracy IT9 ~ 10, surface roughness Ra6.3 ~ 12.5;

During trepanning: aperture accuracy IT9 ~ 10, surface roughness Ra6.3 ~ 12.5;

During rough boring: aperture accuracy IT9 ~ 10, surface roughness Ra3.2 ~ 6.3;

During fine boring: aperture accuracy IT8 ~ 9, surface roughness Ra1.6 ~ 3.2;

During rolling: aperture accuracy IT8 ~ 9, surface roughness Ra0.4 ~ 0.8;

Straightness of machined hole (after finishing): less than 0.15/1000mm;

Deflection of machined hole (after finishing): less than 0.3/1000mm.