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Using a real case with 252 samples, we investigated the relationships among service integrators' power, service suppliers' relationship commitment, competitor network competence and service supply chain integration in service industry of South China. The empirical results revealed that service suppliers' relationship commitment mediated the relationship between service integrators' power and service...
In the spinning process, the tool trajectories is equidistant line of mold profile curve. For specific CNC spinning process, the machining toolpaths are calculatedby the principle of equidistance line. This paper presents an efficient algorithm for the calculation of two-dimensional composite curve equidistant lines. The algorithm calculates the trajectory of processing tool based on limited data...
Implementing modern design and manufacturing technologies in academic and vocational education programs is a prerequisite for successful teaching/training in the field of design and production engineering. However, these technologies are often not affordable to all educational institutions. Evolving virtual and remote laboratories allow sharing e-learning resources with distant institutions, but most...
This paper, based on the development history of Dalian GONA technology Co., Ltd., investigates enterprises' independent innovation mode established by integrating internal and external resources in face of changing demand and continuous competition. It finds that the core of enterprises' independent innovation lies in the integration of internal and external resources, and mode is the integral network...
A new sample-to-answer polymer lab-on-a-chip, which can perform immunoassay with minimum user intervention through on-chip reservoirs for reagents and single microchannel assay, has been designed, developed and successfully characterized as a point-of-care testing (POCT) cartridge for the detection of thyroid stimulating hormone (TSH). Users only need to drop a sample to the POCT cartridge to obtain...
This article has studied the floor surface concave-convex texture in antique floor with the machine-finishing automated process, has analyzed the floor surface texture distributed characteristic. Uses the CNC machine tool, through designs the cutting tool to feed reasonably the route, completes the floor surface the concave-convex texture. Take the solid wood floor as the processing object, uses the...
This research is investigated on the multi-objective performance optimization of a parallel robotic machine tool which is expected to be applied as a next generation of computer numerical control (CNC) machine. The system configuration and the kinematic model are detailed introduced. The performance maps including dexterity and workspace are generated and illustrated. The multi-objective optimal performance...
To improve the application ability of engineering student, some educational reforms based on CDIO about Computer Control Technology course are carried out. The small practice teaching system of Computer Control Technology course is designed to be corresponding with the curriculum practice teaching system. A multi-level and multi-ways practice opportunity, including experimental teaching, hobby club,...
SERCOS-III is the international standard on the third generation serial communication protocol for real-time data communication among the controller and actuators with the advantage of openness, compatibility, high speed, and reliability. Based on studying on the SERCOS-III protocol and ARM embedded control technology, presents one kind of SERCOS-III high speed communication system and discusses the...
The servo motor is widely used in the numerical control system, in order to reduce speed and increase torque, reducer with small volume and large transmission ratio is needed. Planetary gear reducer with two internal gear pairs is known as NN type reducer, it has the advantage of small volume and large transmission ratio so that it is a very suitable selection. This paper takes the reducer design...
On the basis of matter-element and extension set in extension theory, the paper use the level, evaluation indexes and characteristics value on the reliability evaluation of CNC machine tools as a matter-element. Then we can determine the classical field, controlled field and the matter to be evaluated on the subsystem of the numerically-controlled machine tools. Finally we apply the matter-element...
The thesis elaborates the solution with parameter programming that base on the SINUMERIK 802D system' N/C center, The machined big locating hole and the raw 3-625H7 cyLindriform dowel hole's distribution circle get deformed after the four over dowel holes on a kind of annular gear having been machined and given heat treatment. During the instalLing, the components unfurl them to retrieve circularity...
According to the idea of green manufacturing, this paper researChed about CNC machine tools made of recycle and reuse toward the next 5 to 10 years a large-scale NC machine tools scrap recycLing potential resources. Then it also analyses the flow chart of CNC recycLing and reusing, proposed evaluation method of CNC machine tools recycLing and reuse which based on fuzzy analytic hierarchy process....
By analyzing the training objectives of CNC technology professionals, We determine the core position of the courses in the professional. In this thesis, We introduce a new model of teaching in curriculum reform, Give the ideas and basis of project settings, Describe the teaching process of task-driven new model and the results achieved with Six-step teaching program.
Non-circular gears meshing with the characteristics of checkmark, it requires non-circular gears should meshing at the zero line accurately at the beginning of processing. So, there should be a starting point when setting cutter in the processing of non-circular gears. This point can ensure strict position relation between cutter and workpiece. To strictly ensure strict position relation, how to accurately...
The CNC cutting machine is the core of the CAD/CAM system and automation production line of clothing and textile industry. In this paper, propose an arc tangent interpolation algorithm for CNC cutting machine that realizes simultaneous angle control of the knife during the interpolation process and avoids complex calculation. The simulation of an arc interpolation proves that the proposed interpolation...
G-R scaling relations are commonly used on seism prediction. It's mainly used to estimate seism activities for different spaces and time windows and also to predict the probability of seism occurrence. The variance of b-values can reflect the seism active degree of the area. The paper uses this curve to describe the relationships of failure grades and failure rates of CNC lathes which makes an attempt...
A new motion compensation mode of TM_BMC is proposed by this paper to improve video coding efficiency. In TM_BMC, the inter-prediction efficiency is improved by combining the predictor of template matching and predictor of traditional block motion compensation, the coding cost for motion vector of traditional block motion compensation is reduced by utilizing motion vector derived by template matching...
The inherent reliability of product is determined by product design, but the traditional design method of reliability can not assure the higher requirements. In order to improve the reliability of CNC system fundamentally, the product development process of CNC system is improved and reconstructed by the idea of concurrent engineering in the article. The reliability work during its full-life-cycle...
This paper studies the time performance of CNC system based on field bus. Taking the CAN bus as an example, the time characteristics of the communication was analyzed in detail and the feasibility of synchronization of field bus for CNC control system was verified according to the results of the experiments. Meanwhile, the determining rule of the synchronization cycle was proposed and testified. The...
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