Trepanning drilling method and trepanning drilling auxiliary device

• Main Authors: YANG QIN, GAN ZHENGLIN, ZHANG CONG, WAN XIAOHONG, MENG ZHAORAN
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2019
• Subjects: BORING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING; TURNING

The invention discloses a trepanning drilling method and a trepanning drilling auxiliary device, and belongs to the field of machining. When a plurality of blind holes on a cylindrical blank are machined, firstly, a trepanning drill rod is used for trepanning and drilling a blind hole with the diameter d and the length L1 in the cylindrical blank, and then the blind hole is reamed until the diameter of the blind hole is D. On the basis of the blind hole, n times of deepened trepanning and reaming operations are carried out, each time a machined blind hole with the diameter d coaxial with the blind hole is trepanned in the blind hole and is reamed until the diameter is D, and finally k blind holes are formed in the cylinder blank in the same way. The resistance encountered in the trepanningprocess of the trepanning drill pipe is small, the possibility of possible deviation is reduced, the generated deviation can also be corrected by the reaming part, the deviation generated by the trepanning drill rod as a who