Device and method for detecting and adjusting spiral tracks on spindle of numerical control thread repairing lathe

Abstract

The invention provides a device for adjusting inherent spiral tracks of a knife point on a spindle of a numerical control thread repairing lathe. The device is characterized in that the device mainly comprises a lathe body, a lathe head box and a tail platform. The lathe head box and the tail platform are arranged on the lathe body, the spindle capable of moving in a rotary mode is horizontally installed in the lathe head box, the rear side of the lathe head box is provided with a spindle encoder with a casing capable of rotating under the driving by a servo motor, and the front end and the rear end of the spindle are respectively provided with a front chuck and a rear chuck. Bracket multi-group carrier rollers are further arranged on one side of the lathe body. One end of the tail platform facing the lathe head box is provided with a positioning cone device, and a phase detecting sensor for electronic detection and positioning of threaded phase is further arranged between the lathe head box and the tail platform. The device for adjusting the inherent spiral tracks of the knife point on the spindle of the numerical control thread repairing lathe remarkably improves the level of drill rod thread repairing technologies, the quality level and economic benefit.

Description

technical field [0001] The patent of the invention is used in the field of metal cutting and processing, and relates to the CNC pipe thread lathe for repairing and turning the old internal and external threads at both ends of long pipe workpieces such as petroleum drill pipes and drill collars, changing the inherent tool on the lathe spindle A device for sharp cutting helical trajectories. Background technique [0002] In the petroleum and geological drilling industry, the drill bits that are drilled into the ground thousands of meters deep are composed of hundreds of drill pipes and drill collars, which are screwed one by one by the threads at both ends, and connected to the ground drilling rig. The ground drilling rig passes through these The drill pipe and drill collar transmit the torque to the drill bit. These drill pipes and drill collars need to be unloaded one by one after completing the drilling work of a well, recovered, repaired, and used repeatedly. In the main...

AI Technical Summary

Problems solved by technology

The disadvantages of CNC repair turning tapered thread at this level of technology are: the radial cutting amount of the thread is large, the length and dimension of the drill pipe after turning are greatly reduced, the number of repairs of the drill pipe is reduced, and the economic benefit is not good.

This is the only reason why CNC lathes cannot be directly applied to the field of old thread repair processing at present

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