Laser pre-guiding and mechanical drilling machining method

• Main Authors: LI QINYUAN, HUANG XIN, TIAN LING, ZHONG GENDAI, ZENG HONG, LIU YUXIANG
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2024
• Subjects: BORING; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TURNING; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

The invention discloses a laser pre-guiding and mechanical drilling machining method. The laser pre-guiding and mechanical drilling machining method comprises the steps that a machined plate is subjected to laser pre-drilling; on the basis of the pre-drilling hole, secondary drilling is conducted through the drilling tool, and a target hole is formed; the depth h of the pre-drilled hole meets the condition that h is greater than or equal to D/2tan (a/2); wherein a is the drill point angle, h is the depth of the pre-drilled hole, and D is the diameter of the drill bit during secondary drilling. According to the method, the relation between the depth of the pre-drilled hole and the depth of the target hole is defined, it can be ensured that the drill tip of the secondary drilled hole is completely wrapped by the pre-drilled hole by limiting the depth of the pre-drilled hole, and then the guiding effect of the pre-drilled hole on the secondary drilled hole is achieved. 本申请公开了一种激光预导和机械钻孔加工方法，包括：对被加工板进行激光预钻孔；在预钻孔基