Results 101 to 110 of about 18,727 (183)

Analysis of thermal characteristics of machine tool spindle based on lion swarm optimization algorithm

open access: yesJixie qiangdu
Heat is very important to the rotation accuracy of the spindle, and the accurate calculation of the convection heat transfer coefficient is the premise of obtaining accurate results from the finite element steady-state thermal analysis.
ZHANG ZhuangZhuang   +2 more
doaj  

Effect of Acoustic Emission Sensor Location on the Detection of Grinding Wheel Deterioration in Cylindrical Grinding

open access: yesLubricants
The acoustic emission (AE) technique is an effective method for monitoring grinding wheels, and numerous studies have been published on applying an AE to monitor grinding wheels.
Tomohiko Kon   +7 more
doaj   +1 more source

Performance tests with a 4.75 inch bore tapered-roller bearings at high speeds [PDF]

open access: yes
The tapered-roller bearings were tested at speeds to 15,000 rpm which results in a cone-rib tangential velocity of 130 m/sec. (25,500 ft/min). Lubrication was applied either by jets or directly to the cone-rib, augmented with jets.
Pinel, S. I., Signer, H. R.
core   +1 more source

Thermal Error Modelling of a CNC Machine Tool Feed Drive System using FEA Method [PDF]

open access: yes, 2016
Recirculating ball screw systems are commonly used in machine tools and are one of the major heat sources which cause considerable thermal drift in CNC machine tools.
Abuaniza, Ayman   +3 more
core  

The design of a turboshaft speed governor using modern control techniques [PDF]

open access: yes
The objectives of this program were: to verify the model of off schedule compressor variable geometry in the T700 turboshaft engine nonlinear model; to evaluate the use of the pseudo-random binary noise (PRBN) technique for obtaining engine frequency ...
Delosreyes, G., Gouchoe, D. R.
core   +1 more source

Frequency response functions and modal parameters of a rotating system exhibiting rotating damping [PDF]

open access: yes, 2014
In the analysis of the stability threshold speed caused by rotating damping in rotating machinery, there is a lack of experimental data. This stability threshold speed can be found theoretically by means of a linear speed dependent model. The accuracy of
Derammelaere, Stijn   +3 more
core  

Graduation thesis Investigation of slide spindle shaft computer solid model of 5B352PF2 model semiautomatic spline-milling machine tool [PDF]

open access: yes, 2014
Анотація до дипломної роботи Мазурка В.В. "Дослідження комп’ютерної твердотілої моделі шпиндельного вала супорта шліцефрезерного напівавтомата мод. 5Б352ПФ2"Розроблено конструкцію супорта шліцефрезерного верстата та його передньої бабки з подальшим ...
Mazurok, Vitaliy   +1 more
core  

Government review of the Mod-2 wind turbine (as-built) [PDF]

open access: yes
The findings and recommendations of the Government committee formed to conduct an as-built review of the three Mod-2 wind turbine units at Goldendale, Washington are given.
Birchenough, A. G.   +7 more
core   +1 more source

Orbital tube flaring system produces tubing connectors with zero leakage [PDF]

open access: yes, 1967
An orbital tube flaring system produces tubing connectors with a zero-leak potential needed in high pressure hydraulic and pneumatic systems.
Williams, J. R.
core   +1 more source

Lubrication of high-speed, large bore tapered-roller bearings [PDF]

open access: yes
The performance of 120.65-mm- (4.75-in.-) bore tapered-roller bearings was investigated at shaft speeds up to 15,000 rpm (18,000 DN). Temperature distribution and bearing heat generation were determined as a function of shaft speed, radial and thrust ...
Parker, R. J., Signer, H. R.
core   +1 more source

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