Design method of high-strength reverse boring cutter

The invention relates to a high-strength reverse boring cutter design method which is used for machining a reverse counter bore of a workpiece. The diameter of the workpiece through hole is D1, and the depth of the through hole is L2; the diameter of the counter bore is D2, and the depth of the counter bore is L1; the reverse boring cutter comprises a cutter bar and a blade mounted on the cutter bar; the cutter bar comprises a cutter clamping part provided with a side fixing position, a connecting rod fixedly connected with the cutter clamping part and an eccentric cylinder fixedly connected with the connecting rod; the diameter D4 of the connecting rod is determined according to the diameter D1 of the through hole, and D1-D4 = 0.1-0.2 mm; the diameter D5 of the eccentric cylinder meets the condition that D2-D5-2H is equal to 0.1-0.2 mm; the point of the blade is located on a connecting line of the circle center of the connecting rod and the circle center of the eccentric cylinder, and R = H + D5/2 + h = D2/2