Core rod for improving sliding force of tail part of internal spline

• Main Authors: FANG FEISONG, JIANG ZUZHEN, ZHANG CHUNLING, LI GUANGBING, YANG WEI, XIAO YONG, HUANG LONGGUI, YANG KE
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2022
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a core rod for improving the sliding force of the tail part of an internal spline, which comprises a core rod body, a straight section, a taper section and a polished rod are sequentially arranged on the core rod body from front to back, external splines are arranged on the straight section and the taper section, and the major diameter of the external spline on the straight section is equal to the major diameter of the external spline on the taper section. The small diameter of the front end of the taper section is equal to the small diameter of the outer spline on the straight section, the small diameter of the rear end of the taper section is gradually increased, the diameter of the polish rod is larger than the large diameter of the taper section, and the rear end of a part is attached to the front end of the polish rod during machining. According to the internal spline machined through the core rod, the conical section with the internal spline body and the small diameter increa