High-efficiency and high-precision detection device for circular arc roundness of cutter point of diamond cutter

The invention provides a high-efficiency and high-precision detection device for circular arc roundness of a cutter point of a diamond cutter and belongs to the technical field of cutter detection devices. A precision air flotation shafting is vertically arranged at the center of a vibration isolation platform; a fine-aligning device is fixedly arranged at the upper end part of the precision air flotation shafting; a cutter fixture is fixedly arranged at the upper part of the fine-aligning device; a stereoscopic microscope system is arranged above the cutter fixture; and an atomic force microscope (AFM) system is arranged above one side of the cutter fixture. According to the high-efficiency and high-precision detection device disclosed by the invention, the stereoscopic microscope system assists the fine-aligning device in aligning, so that the aligning precision is increased, the defect that the measurement range of the AFM is narrow is overcome, and three-dimensional measurement with high measurement precision is realized; the problem of precision measurement of the circular arc roundness of the cutter point of the diamond cutter with a circular arc edge can be solved; and measurement data of the circular arc roundness can be used for reflecting dynamic characteristic of a cutter grinding machine, evaluating the cutter grinding quality of the cutter and providing data support for cutter compensation in the numeric control single-point diamond turning.