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(31) On this paper, all experiments were accomplished on the numerical control machine.

(32) The numerical control machine is controlled by the numerical control program, and a series of special CNC instruction code Constitute the numerical control program.

(33) In view of the spherical surface numerical control milling question, the paper has analyzed the advantage and disadvantage of automatic programming and the manual programming by contrast.

(34) By the model, the contour error vectors were computed with tool position points from the interpolator of Computer Numerical Control(CNC) and position tracking errors of servo systems.

(35) In this paper a fluidics device of continuous-path numerical control system for electrical spark machine tool is presented.

(36) The traditional positioning accuracy detection method of feed shaft for numerical control(NC) machine tool exists low accuracy, method obsolete and poor measurement repeatability.

(37) It is meaningful and valuable in engineering practice to develop special postprocessor aimed at numerical control machine with special structure or special numerical control system.

(38) However, students should be made aware of the basics of NC before being exposed to the more recent developments of computerized numerical control(CNC) and direct numerical control(DNC).

(39) II Data acquisition is an important function of Distributed Numerical Control ( DNC ) systems.

(40) Through adopting the concept of time error, a sort of characteristics of numerical control of accurate voltage controlled oscillator and its time error are analyzed.

(41) In the dissertation, it gaves the software programming of numerical control basic circuit element, carried on the hardware debugging result analysis of numerical control basic circuit element.

(42) Familiar faults about numerical control system of grinding machine were pointed, and the methods to get rid of faults on two parts of numerical control device and servo mechanism were introduced.

(43) Based on the characteristics of numerical control program and compiler, a means was presented for the structure and design of NC code translator module and the implement technology was described.

(44) The wien bridge trap filter and its application in the distortion measurement are introduced, the kind of intelligent numerical control tuning Wien bridge trap filter circuit is proposed.sentencedict.com

(45) In order to machine steep-lead multiple- trapeziform screw thread of large diameter parts, CQ5250 vertical lathe is modified to suit siemens numerical control system lathe.

(46) The paper analyses the software structure and realize the net function of this numerical control system.

(47) Adopted modern means of embedded system such as microprocessors, FPGA/CPLD, general-purpose computer and DSP, numerical control system is rapidly developed.

(48) Taring national conditions into consideration, seven development tendencies of the numerical control system are summed up.

(49) By combining the technologies of USB with that of Computer Numerical Control (CNC) of Wire Cut Electric Discharge Machining (WEDM), a system of PC for WEDM based on USB are designed.

(50) In direct numerical control (DNC), as originally conceived and developed in the 1960's, several machines are directly controlled step by step by a central mainframe computer.

(51) Aiming at improving the interpolation efficiency without lowering the path accuracy, the velocity look- ahead control in CNC (computerized numerical control) was introduced.

(52) Adopting the computerized Numerical Control Technique to machine the breakage groove of torshear type bolts can improve the machining precision of groove, guarantee the assembled quality.

(53) Thermadyne and Hypertherm USA and Kjellberg Germany are three major imported brands which are first choice as accessories for quality blanking of plasma cutting of numerical control lathe.

(54) With NC cutting plate machine, CNC punch, CNC bending machines, CNC machine circle round, NC thermal machine, CNC laser cutting machine and a series of advanced numerical control equipment.

(55) The concave and convex of face gear tooth surface benefits gear strength, and the grinding process can be conducted on the general wheel and numerical control machine.

(56) It describes how to realize efficient application of CAD/CAM software platform, discusses the different type components numerical control programming with the processing graph method.

(57) In numerical control machining, it is becoming more and more important to machine the composite surface with high efficiency.

(58) The computer numerical control technique is one of the most rapid developing techniques in the modern manufacturing industry, also one of the necessary means in the advanced Manufacturing techniques.

(59) The numerical control turret is the important component and key function part of the CNC tool machine.

(60) Therefore, numerical control machine tools on the general demand for reform even more robust.