The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform

Han Furong - One of the best experts on this subject based on the ideXlab platform.

  • novel fire hydrant valve rod feeding safety device based on plc programmable logic controller structure
    2016
    Co-Authors: Han Furong
    Abstract:

    The invention provides a novel fiber hydrant valve rod feeding safety device based on a PLC (programmable logic controller) structure. The novel fiber hydrant valve rod feeding safety device comprises a working table, a baffle plate, a fixing screw, a connecting wire, a turntable motor, the PLC structure, a sensor, a cutting motor, a cutter, a transmission shaft, a mounting plate, fixing bolts, a material rod, a slideway and a turntable, wherein the PLC structure is mounted in the middle of the working table through the fixing bolts on the mounting plate; the sensor is mounted on the left side of the baffle plate through the fixing screw; the turntable motor is arranged behind the turntable; the cutting motor is arranged behind the cutter through the transmission shaft; the material rod is arranged on the slideway. According to the novel fiber hydrant valve rod feeding safety device based on the PLC structure, a PLC structure display screen, a PLC structure main body and the sensor are arranged, so that the intelligent display effect is improved, the intelligent degree is increased, the accurate control capacity for the cutting motor and the turntable motor is further improved, accordingly, the material cutting precision is improved, the maintenance cost is reduced, and the service life is prolonged.

  • novel fire hydrant valve rod feeding safety device based on plc structure
    2015
    Co-Authors: Han Furong
    Abstract:

    The utility model provides a novel fire hydrant valve rod feeding safety device based on a PLC structure. The novel fire hydrant valve rod feeding safety device comprises a working table, a baffle, a fixing screw, a connecting wire, a turntable motor, the PLC structure, a sensor, a cutting motor, a cutting knife, a transmission shaft, a mounting plate, a fixing bolt, a material rod, a slideway and a turntable. The PLC structure is installed at the middle position of the working table through the fixing bolt positioned on the mounting plate, the sensor is installed on the left side of the baffle through the fixing screw, the turntable motor is arranged at the rear of the turntable, the cutting motor is arranged at the rear of the cutting knife through the transmission shaft, and the material rod is arranged above the slideway. Through the arrangement of a PLC structure display screen, a PLC structure main body and the sensor, the novel fire hydrant valve rod feeding safety device is favorable for improving intelligent display effect and the intelligence degree and further improves the accurate control capability of the cutting motor and the turntable motor; therefore, the accurate control capability of the cutting motor and the turntable motor is improved, the cutting accuracy is improved, the maintenance cost is reduced, and the service life is prolonged.

Ahim H Guzelbey - One of the best experts on this subject based on the ideXlab platform.

  • deformations and pressure distribution on machine tool Slideways
    International Journal of Machine Tools & Manufacture, 1997
    Co-Authors: Huseyi Fidotlidotz, Abdullah Akpola, Ahim H Guzelbey
    Abstract:

    A finite element analysis of machine tool Slideways has been carried out by using two-dimensional slideway models. Models are considered to consist of contact elements at the interface of sliding surfaces. Flat and dovetail types of Slideways are modelled, and pressure distributions and deformations are determined with the use of ANSYS Rev. 5.0A non-linear contact elements. Close correlation of the results obtained from ANSYS with the experimental results given in the literature demonstrates the validity of the models used. Ease of construction of the models and faster solution times seemed to be the advantages of this method. The existing designs can easily be modified if the requirements on the allowable pressure distribution and deformations on the contact surfaces are specified.

Miki Nakano - One of the best experts on this subject based on the ideXlab platform.

  • effects of surface texture size on the tribological properties of Slideways
    Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, 2010
    Co-Authors: H Ogawa, Shinya Sasaki, Atsushi Korenaga, Koji Miyake, Miki Nakano, T Murakami
    Abstract:

    AbstractThe effects of surface texture on the tribological properties of Slideways were investigated experimentally. The authors designed an experimental apparatus for evaluating textured surfaces using specimens of a practical size (82 mm × 82 mm) considering the Slideways used for machine tools which are one of the application fields for their research. The evaluated textures were dimple and groove textures, and their diameters and widths varied from 50 μm to 1 mm. The textures were processed by sandblasting as it is one of the alternative methods applied in industry. For comparison with the conventional textures, scraped surfaces were also evaluated. The friction coefficient and the film thickness were measured under the conditions of plane contact, and lubricating with the oil to clarify the effects of the textured pattern. The experimental results showed that the friction coefficient of the textured surfaces was smaller than that of the flat surfaces in the mixed lubrication regime. Regarding the mec...

  • SPECIAL ISSUE PAPER 885 Effects of surface texture size on the tribological properties of Slideways
    2009
    Co-Authors: Shinya Sasaki, Atsushi Korenaga, Miki Nakano
    Abstract:

    Abstract: The effects of surface texture on the tribological properties of Slideways were investi-gated experimentally. The authors designed an experimental apparatus for evaluating textured surfaces using specimens of a practical size (82mm × 82mm) considering the Slideways used for machine tools which are one of the application fields for their research. The evaluated textures were dimple and groove textures, and their diameters and widths varied from 50µm to 1mm. The textures were processed by sandblasting as it is one of the alternative methods applied in industry. For comparison with the conventional textures, scraped surfaces were also evaluated. The friction coefficient and the film thickness were measured under the conditions of plane con-tact, and lubricating with the oil to clarify the effects of the textured pattern. The experimental results showed that the friction coefficient of the textured surfaces was smaller than that of the flat surfaces in the mixed lubrication regime. Regarding the mechanisms of friction reduction by texture types, the authors think that the dimples played the role of oil reservoir, and the parallel grooves prevented side leakage of the lubricating oil

Karl Iagnemma - One of the best experts on this subject based on the ideXlab platform.

  • basic running test of the cylindrical tracked vehicle with sideways mobility
    Intelligent Robots and Systems, 2009
    Co-Authors: Kenjiro Tadakuma, Riichiro Tadakuma, Keiji Nagatani, Kazuya Yoshida, Aigo Ming, Makoto Shimojo, Karl Iagnemma
    Abstract:

    In this paper, the basic running performance of the cylindrical tracked vehicle with sideways mobility is presented. The crawler mechanism is of circular cross-section and has active rolling axes at the center of the circles. Conventional crawler mechanisms can support massive loads, but cannot produce sideways motion. Additionally, previous crawler edges sink undesirably on soft ground, particularly when the vehicle body is subject to a sideways tilt. The proposed design solves these drawbacks by adopting a circular cross-section crawler. A prototype. Basic motion experiments with confirm the novel properties of this mechanism: sideways motion and robustness against edge-sink.

  • tracked vehicle with circular cross section to realize sideways motion
    International Conference on Robotics and Automation, 2009
    Co-Authors: Kenjiro Tadakuma, Steve Peters, Martin Udengaard, Riichiro Tadakuma, Keiji Nagatani, Kazuya Yoshida, Karl Iagnemma
    Abstract:

    In this video, a novel tracked mechanism for sideways motion is presented. The tracked mechanism is of circular cross-section and has active rolling axes at the center of the circles. Conventional tracked mechanisms can support massive loads, but cannot produce sideways motion. Additionally, previous crawler edges sink undesirably on soft ground, particularly when the vehicle body is subject to a sideways tilt. The proposed design solves these drawbacks by adopting a circular cross-section crawler. A prototype has been developed to illustrate the concept. Motion experiments confirm the novel properties of this mechanism: sideways motion and robustness against edge-sink. Motion experiments, with a test vehicle are also presented.

  • crawler vehicle with circular cross section unit to realize sideways motion
    Intelligent Robots and Systems, 2008
    Co-Authors: Kenjiro Tadakuma, Martin Udengaard, Steven C Peters, Riichiro Tadakuma, Keiji Nagatani, Kazuya Yoshida, Karl Iagnemma
    Abstract:

    In this paper, a novel crawler mechanism for sideways motion is presented. The crawler mechanism is of circular cross-section and has active rolling axes at the center of the circles. Conventional crawler mechanisms can support massive loads, but cannot produce sideways motion. Additionally, previous crawler edges sink undesirably on soft ground, particularly when the vehicle body is subject to a sideways tilt. The proposed design solves these drawbacks by adopting a circular cross-section crawler. A prototype has been developed to illustrate the concept. Motion experiments confirm the novel properties of this mechanism: sideways motion and robustness against edge-sink. Motion experiments, with a test vehicle are also presented.

Kazuya Naoi - One of the best experts on this subject based on the ideXlab platform.

  • development and characterization of a new instrument for the traceable measurement of areal surface texture
    Measurement Science and Technology, 2009
    Co-Authors: Richard Leach, Claudiu L Giusca, Kazuya Naoi
    Abstract:

    Modern manufacturing industry is beginning to benefit greatly from the ability to control the three-dimensional, or areal, structure of a surface. To underpin areal surface manufacturing, a traceable measurement infrastructure is required. In this paper, the development of a new traceable instrument for the measurement of areal surface texture is presented. The instrument uses a two-axis coplanar air-bearing slideway to move the measured surface beneath a stylus probe. The motion of the slideway is measured using linear and angular interferometers. The key to the new instrument is a novel probing system incorporating a cylindrical air-bearing guideway and an electromagnetic system to maintain a constant stylus force on the surface. The deflection of the stylus is measured using a differential plane mirror interferometer thereby minimizing the effect of any error motion in the metrology frame. The uncertainties of the instrument are calculated using a Monte Carlo approach and are evaluated to be 5 nm in the z axis and 16 nm in the x and y axes (all at k = 2). The results are given for the instrument and are compared to results from a traceable profile measuring instrument and a coherence scanning interferometer.