High-accuracy cutter deviation online measuring device and method

Abstract

The invention discloses a high-accuracy cutter deviation online measuring device which comprises a clamping mechanism fixedly installed on a main shaft head of a machine tool. A laser displacement measurement device is installed on the clamping mechanism, a data acquisition processing device for receiving and processing signals sent by the laser displacement measurement device are connected onto the laser displacement measurement device, and the laser displacement measurement device comprises more than two laser measuring heads. The laser measuring heads are installed on the clamping mechanism, and a laser transmitter and a laser receiver are arranged on each laser measuring head. The cutter deviation in the cutting process is measured by means of the laser displacement measurement device, the signal acquisition frequency is high, and the measurement accuracy is high. The deviation of a cutter in the X-axis direction and Y-axis direction can be measured simultaneously by means of at least two laser measuring heads, a geometric relationship equation is established to perform error compensation, the external disturbing influence is small, and the measurement accuracy is high.

Description

technical field [0001] The invention relates to the field of tool measuring devices, in particular to a high-precision online tool deviation measurement device and method. Background technique [0002] Five-axis CNC machining can make the reachable space of the tool wider by changing the relative position of the tool and the workpiece, so that the interference or collision between the tool, the workpiece and the process system can be effectively avoided through tool position planning. Therefore, five-axis CNC machining has been widely used in complex surface machining in the fields of aerospace, energy, automobile and national defense. [0003] However, the deviation of the tool from the theoretical position will reduce the machining accuracy, which cannot be ignored. Especially for ultra-high-strength and ultra-high-hardness material workpieces, such as aircraft landing gear, engine impeller and other aviation parts are difficult-to-machine materials with high strength and...

AI Technical Summary

Problems solved by technology

However, due to the many factors affecting the tool deviation in the actual machining process, such as the eccentric beating of the tool, the anisotropy of the processing material, the instability of the process environment, etc., the actual tool deviation often does not meet the prediction

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