Research on Tightening Torque Control and Test of Screw Joint Bolts
نویسندگان
چکیده
منابع مشابه
Loosening torque of Universal Abutment screws after cyclic loading: influence of tightening technique and screw coating
PURPOSE The purpose of this study was to evaluate the influence of tightening technique and the screw coating on the loosening torque of screws used for Universal Abutment fixation after cyclic loading. MATERIALS AND METHODS Forty implants (Titamax Ti Cortical, HE, Neodent) (n=10) were submerged in acrylic resin and four tightening techniques for Universal Abutment fixation were evaluated: A ...
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The drug making resreach has accentuated on extrusion technology for a long time. The advance of drug bioavailibility, bead manufacturing and granulation is assured by extrusion procedures. There are also diverse effects in resereches with respect to the use of process understanging as a tool in quality management. Many initiatives of FDA such as PAT and QBD are getting accepted. In this survey...
متن کاملThe effect of 3 torque delivery systems on gold screw preload at the gold cylinder-abutment screw joint.
PURPOSE This study measured the gold screw preload at the gold cylinder-abutment screw joint interface obtained by 3 torque delivery systems. MATERIALS AND METHODS Using a precalibrated, strain-gauged standard abutment as the load cell, 3 torque delivery systems tested were shown to have significant differences in gold screw preload when a gold cylinder was attached. RESULTS Mean preloads m...
متن کاملAn Automatic Screw Tightening Shaft Based on Enhanced Variable Gain PID Control
In this paper, a modular designed automatic screw tightening shaft system, which is based on enhanced variable gain PID control, is proposed. Designed for the autonomous screw tightening operation, the screw tightening shaft enjoys huge potential for industry application. The screw tightening shaft and the screw tightening process are both mathematically modeled as an uncertain feedback system ...
متن کاملEffect of repeated screw joint closing and opening cycles on implant prosthetic screw reverse torque and implant and screw thread morphology.
STATEMENT OF PROBLEM Clinicians must know if a new screw can predictably increase reverse torque after multiple screw insertion cycles. PURPOSE The purpose of this study was (1) to compare the effect of multiple implant prosthetic screw insertion and removal cycles on reverse torque, (2) to determine whether a new screw, after multiple screw insertion cycles, affects reverse torque, and (3) t...
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ژورنال
عنوان ژورنال: Mechanical Engineering and Technology
سال: 2018
ISSN: 2167-6631,2167-6623
DOI: 10.12677/met.2018.71001