Calibrating device and calibrating method for contact online detection system of lathe

Abstract

The invention discloses a calibrating device and a calibrating method for a contact online detection system of a lathe. The calibrating device comprises a clamping shaft and an L-shaped device main body; the clamping shaft is a cylinder, one end of the clamping shaft is used for clamping a lathe chuck while the other end is connected to the top end of a long side of the L-shaped device main body,and the axle wire of the clamping shaft and the center line of the long side of the L-shaped device main body are collinear; a step hole and a first hole are formed in the bottom end of the L-shaped device main body; the axle wire of the first hole, the axle wire of the clamping shaft and the center line of the long side of the L-shaped device main body are collinear and are superposed with the rotating center of the main shaft of the lathe; the step hole is formed by a through hole in the upper side and a second hole in the lower side; the axle wire of the through hole and the axle wire of the second hole are collinear and are parallel to the rotating center of the main shaft of the lathe; the connecting line of hole centers of the first hole and the through hole is parallel to the transverse feeding direction of the lathe; the axle wire of the through hole is parallel to the axle wire of the first hole; and the first hole and the through hole are same in radius.

Description

technical field [0001] The invention relates to the technical field of numerical control equipment, in particular to a calibration device and a calibration method for a contact-type on-line detection system of a lathe. Background technique [0002] In order to improve the positioning accuracy and processing efficiency of the positioning reference before the process, the online detection technology of the trigger probe has been widely used in the CNC machining process. [0003] However, the principle of the trigger probe is to rely on the trigger force generated by the contact between the measuring ball and the workpiece to overcome the preload of the internal spring, thereby breaking the closed circuit inside the probe and finally sending out a trigger signal. In this way, after the measuring ball touches the workpiece to be measured, it needs a small displacement to stop. This displacement is called pre-travel error. Therefore, it is necessary to calibrate the probe before...

AI Technical Summary

Problems solved by technology

However, this method can only calculate the radial component of the installation error in the direction of the lathe’s missing movement degree of freedom, and cannot calculate all the installation errors in the direction of the movement degree of freedom, nor can it calibrate the pre-travel error of the probe

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