The deep hole pulling boring machine can work on inner hole pull-boring, expand and rolling-pressing. When pull boring machine work, workpiece will static(not rotary), cutter rotary and infeeding, the cutting liquid will enter to cutting area through oil provide device, cooling and lubricating the cutting area and bring the chips away. When deep hole pull boring works, it adopts auto chips removal method, the chips will be discharged thorugh the front chips box.

Rough boring: hole diameter accuracy IT9-10. Surface roughness: Ra6.3.

Precision boring: hole diameter accuracy IT8-9. Surface roughness: Ra3.2.

Rolling-pressing: hole diameter accuracy IT8-9. Surface roughness: Ra0.2.

Holes straightness: Less than 0.15/1000mm.

Holes exit screwness: Less than 1/1000mm.

Deep hole pull boring machine processing efficient

Cutting speed: according to cutters' struction, cutters'material and workpiece material, normally speed is 50-150m/min.

Infeed speed: according the requirement, normally 5-500mm/min.

When boring, the Max.processing finish allowance: according the cutter's struction, cutters'material and workpiece condition, single side processing amount less than 10mm.