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  • Parallel Grinding Scientific.Net

    Abstract: Parallel grinding is an effective method of aspheric moulds machining which is usually made of industrial ceramic such as silicon carbide (SiC) or tungsten carbide (WC), but if the spherical grinding wheel is not being with precision truing and dressing, the roughness and form accuracy of the ground aspheric surface should get worse, for this reason, in this paper, the influence

  • Machining of Aspherical Opto-Device Utilizing Parallel

    the parallel grinding method is remarkably better than the conventional method. Development of Axisymmetric asph eric parallel grinding system Based on the findings in the previous section, an ultra-precision axisymmetric aspheric grinding machine was manufactured for a parallel grinding method. Figure 6 shows a whole system and a

  • Wheel curve generation error of aspheric

    2006-12-1 · In the parallel grinding method, the wheel contact area in the grinding process is changed and wheel wear is scattered on the wheel surface,. Thus, truing accuracy of the wheel radius significantly affects the profile accuracy of ground surface. Wheel curve generation in the truing process is based on the Curve Generation (CG) method

  • Research 厨川・水谷研究室

    Parallel grinding method and arc-envelope grinding method Nano-topography generation theory and grinding condition optimization High efficiency aspherical grinding of large-scale fused quartz optics Development of noncontact aspheric measurement

  • Machining of Aspherical Molding Dies Utilizing

    This stone deals with truing/dressing of a high accuracy spherical wheel to be used by the Parallel Grinding Method. The parallel grinding method is an arc-envelope grinding method in which a grinding wheel with an arc-shaped cross-section is used to generate an aspherical profile.

  • Machining of Aspherical Opto-Device Utilizing Parallel

    To machine a noncoaxial nonaxisymmetric aspheric lens, a new parallel grinding method that employs a fixture with an adjustable gradient (AGF) is proposed. The AGF is developed for a three-axis

  • An investigation into parallel and cross grinding of

    Grinding tests were conducted on a Holroyd Edgetek SAM 5-axis surface grinder to assess parallel and cross grinding operations. The two modes, including the feed rate directions and grinding tracks/zones, are depicted in Fig. 1.Test 1 was referred to as parallel grinding, in which the side surface of the grinding wheel is positioned parallel to the circumferential direction of the workpiece.

  • Machining of Aspherical Molding Dies Utilizing Parallel

    The parallel grinding method is an arc-envelope grinding method in which a grinding wheel with an arc-shaped cross-section is used to generate an aspherical profile. The property of the ground surface by the parallel grinding method and

  • Grinding SINUMERIK machining technologies

    Depending on the type of grinding wheel, a new wheel must be profiled. Or an already profiled washer has to be provided with a new grinding profile. Contour parallel dressing is the efficient method for resharpening, since the original profile is retained.

  • 王振忠-厦门大学机电工程系

    2020-4-5 · Research on an optimized machining method for parallel grinding of f-θ optics. International Journal of Advanced Manufacturing Technology, 2015. 80:1411–1419. [7] Wang ZZ,Xie YH,Jiang T,Pan R,Guo YB. Control Strategy Study of Precession Mechanism

  • 王振忠-厦门大学机电工程系

    2020-4-5 · Research on an optimized machining method for parallel grinding of f-θ optics. International Journal of Advanced Manufacturing Technology, 2015. 80:1411–1419. [7] Wang ZZ,Xie YH,Jiang T,Pan R,Guo YB. Control Strategy Study of Precession Mechanism

  • Research on an optimized machining method for

    Abstract. Parallel grinding method has been widely used for advanced optics machining, especially f-θ optics. In order to reduce the dependence on high-precision machine tool with many degrees of freedom (DOF) and obtain high machining accuracy, in this paper, we propose a simultaneous 2-axis method to replace the conventional simultaneous 3-axis method in parallel grinding.

  • Surface Quality Improvement of Aspheric Pressing

    Surface Quality Improvement of Aspheric Pressing Mould Using Parallel Grinding Method. Article Preview. Abstract: It is a cost-effective technology to obtain aspheric optics made from optical glass and other brittle materials using pressing mould. The optical quality of molded optics is determined mostly by the surface quality of the mould

  • Back grinding method for wafer Disco Corporation

    2011-9-27 · The method of grinding a back-side surface of a wafer according to this embodiment includes, as shown in FIGS. 2A to 2C, covering the face-side surface 1a of the wafer 1 with a resin film 5, then cutting the surface 5a of the resin film 5 to make the surface 5a parallel to the face-side surface 1a of the wafer 1, and thereafter grinding a back

  • parallel grinding definition English

    A method of truing a grinding wheel capable of accurately truing the wheel surface of the grinding wheel in a short time in a grinding device having the conductive grinding wheel, comprising the steps of, when the flat annular grinding wheel surfaces (10a, 10a) of a pair of grinding wheels (1, 2) disposed opposedly to each other are trued simultaneously, for example, disposing a discharge

  • Assessment of grinding weld treatment methods using

    2020-5-29 · grinding is used for modifying the weld shape and removing defects and undercuts of the weld. This method is more eco-nomicalthanburrgrinding.However,testresultsshowedlarg-er scatter in the fatigue lifetimes, and burr grinding is more favourable because the fabrication scratches of burr grinding are parallel to the direction of fatigue loads.

  • US10286520B2 Grinding apparatus and grinding

    Grinding Method. Next, a grinding method using the double-head grinding machine 1 will be described. The grinding method will be exemplarily described in an instance where the inclination angle θ of the spindle 31 is zero when the to-be-measured surface 35A is in parallel to the XY plane SA, in other words, when the spindle 31 is perpendicular

  • 王振忠-航空航天学院 Xiamen University

    2020-5-19 · Research on an optimized machining method for parallel grinding of f-θ optics. International Journal of Advanced Manufacturing Technology, 2015. 80:1411–1419. [8] Wang ZZ, Xie YH, et al. Control Strategy Study of Precession Mechanism for Bonnet Polishing Curved Optical Surface[J].

  • Grinding SINUMERIK machining technologies

    Depending on the type of grinding wheel, a new wheel must be profiled. Or an already profiled washer has to be provided with a new grinding profile. Contour parallel dressing is the efficient method for resharpening, since the original profile is retained.

  • KLi(HC3N3O3)·2H2O: Solvent-drop Grinding Method

    2019-5-25 · A novel mixed alkali hydro-isocyanurate, KLi(HC3N3O3)·2H2O was first prepared in AOH-BOH-H3C3N3O3 (A/B = Li/Na/K/Rb/Cs) system via a solvent-drop grinding method. KLi(HC3N3O3)·2H2O shows a large second harmonic generation response (5.3 × KH2PO4) with an ultraviolet cutoff edge of 237 nm. More importantly, the bulk single crystal can be readily grown