Patent
Tool setting method, proper circle processing method and Fresnel lens processing method
Li Yong,Xing Gao,Li Chaojiang,Yang Jinrong +3 more
- 22 Jan 2014
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TL;DR: In this article, a tool-set method for tool rotation is described, where a tool is installed on a shaft B, the shaft B rotates to enable the tool nose to rotate by the angle alpha and move from the first position to the second position, and the relative distance between the first and second positions in the direction parallel to the Z direction is marked as y2, wherein alpha is larger than or equal to 108 degrees but smaller than or unequal to 110 degrees; a point (a,b) is set to be a coordinate, in a coordinate system treating any
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Abstract: The invention relates to a tool setting method. The tool setting method comprises the steps that an X-direction fine-adjustment platform, a Z-direction fine-adjustment platform and a tool are installed on a shaft B, the shaft B rotates to enable the tool nose to rotate by the angle alpha and move from the first position to the second position, and the relative distance between the first position and the second position in the direction parallel to the Z direction is marked as y2; the shaft B rotates again to enable the tool nose to rotate by the angle alpha and move from the second position to the third position, and the relative distance between the first position and the third position in the direction parallel to the Z direction is marked as y3, wherein alpha is larger than or equal to 108 degrees but smaller than or equal to 110 degrees; a point (a,b) is set to be a coordinate, in a coordinate system treating any point on a rotation center line as the original point, of the tool nose, the coordinate direction of a is the same as the X direction, and the coordinate direction of b is the same as the Z direction; the perpendicular distance r between the tool nose and the rotation center line is calculated according to the formula (1) of , the formula (2) of and the formula (3) of , the perpendicular distance r between the tool nose and the rotation center line is compared with the machining radius R, and if r is not equal to R, the coordinate (a,b) is adjusted until r is equal to R.
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Citations
Patent
Eccentricity extraction method for micro-milling cutter
Zhou Yudong,Tian Yanling,Yanjie Yuan,Jing Xiubing,Zhang Dawei +4 more
- 25 Jan 2017
TL;DR: In this paper, an eccentricity extraction method for a micro-milling cutter was proposed, which comprises the following steps: 1) obtaining holder outer contour play eccentricity data of a micro milling cutter through a laser displacement sensor I, and 2) collecting the bottom outer contours play eccentricities data of the milling cutters through a LIDAR sensor II, and 3) extracting the eccentricity of the cutters according to the formula shown in the specification.
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Patent
Method for manufacturing Fresnel structure on surface of roller
Kong Lingbao,Zhang Zhihui,Li Ze +2 more
- 19 Jan 2018
TL;DR: In this paper, a method for manufacturing a Fresnel structure on the surface of a roller was proposed, in which only two rectilinear motion shafts are used, and one time of cutter position adjustment is used for a rotating shaft.
References
Patent
Method of and apparatus for working structure
Shinya Kunimatsu,Hisayoshi Onishi,Matsuo Makoto +2 more
- 21 Nov 2007
TL;DR: In this article, the productivity of an optical component mold employed as the structure can be efficiently improved when the mold for molding a Fresnel lens is worked by cutting the mold material employed as a workpiece with the cutting tool in a four-spindle lathe-type cutting/working apparatus including X-, Y-, Z- and C-axes of rotation.
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Tool setting on a B-axis rotary table of a precision lathe
Matthew Bono,Jeremy Kroll +1 more
TL;DR: In this article, a method for setting a single-point cutting tool on the axis of rotation of a B-axis rotary table on a precision lathe was developed, which requires that three grooves be machined in the face of a workpiece with the b-axis set at three different angles.
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Patent
Design method for diamond knife tool for processing Fresnel lens
Ming Zhou,Shijin Chen,Haijun Zhang +2 more
- 18 Feb 2009
TL;DR: In this article, a method for designing a diamond tool which is applied to diamond ultra-precision turning Fresnel lenses is presented, where the main parameter needing to be designed are a deflection angle theta, a tool nose angle phi, tool nose arc radius Rl, and tool nose transition radius Rm. The principle of designing the tool nose angles is to ensure that interference can not occur when a step surface of an outermost zone is machined.
4
Patent
Small part rotation center-adjusting method based on image auxiliary
Xuesen Zhao,Yongda Yan,Zhenjiang Hu,Tao Sun,Dangzhong Gao +4 more
- 22 Aug 2012
TL;DR: In this paper, a small part rotation center-adjusting method based on image auxiliary equipment is proposed to achieve various ultra-precision machining and detect non-contact damage-free center adjusting of a part installed on the equipment.
4
Patent
Automatic numerically controlled lathe has an attachment in the driven tool holder turret which machines spherical surfaces under numerical control
Weigt Thomas
- 11 Jan 2001
TL;DR: The spherical surface cutter for a numerically controlled machine tool has a normal tool holder (3) on a turret (2) which carries the spherical cutting attachment (4) and is driven about the work by a toothed belt without resetting the work as discussed by the authors.
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