Peripheral positioning method of automotive glass inserts

A technology of automobile glass and positioning method, which can be applied to household components, applications, instruments, etc., and can solve problems such as complex fitting process

Active Publication Date: 2018-02-09
FUJIAN UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to discretize the contour of the periphery of special-shaped glass and perform curve fitting within the range of manufacturing accuracy. The corresponding fitting process is more complicated. Therefore, we propose a more concise and feasible positioning method for the peripheral curve of the automobile side window glass. Way

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  • Peripheral positioning method of automotive glass inserts
  • Peripheral positioning method of automotive glass inserts
  • Peripheral positioning method of automotive glass inserts

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0024] A peripheral positioning design method for an automotive glass insert, the steps comprising:

[0025] Step 1, taking the outline centroid O of the obtained automobile glass as the origin to establish a coordinate system, determine the peripheral curve of the automobile glass, and measure the length of the peripheral curve of the automobile glass;

[0026] Step 2: Based on the length of the peripheral curve of the automobile glass, divide the peripheral curve of the automobile glass into N equal segments to obtain (N+1) segmentation points (X, Y), and obtain (N+1) respectively The normal vector a(X,Y) of the split point;

[0027] In this implementation, the peripheral curve of the automobile glass is divided into 50 equal segments to obtain 51 segmentation points, each of which is shown in the coordina...

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Abstract

The invention discloses a peripheral positioning method of automobile glass inserts. The method comprises the following steps: building a coordinate system by taking a core O of automobile glass as an original point, determining a peripheral curve of the automobile glass and equally dividing the peripheral curve into N sections to obtain (N+1) dividing points, respectively solving normal vector values of the (N+1) dividing points, calculating a normal vector included angle between any two dividing points to solve self-locking angles of positioning baffles, optionally selecting a dividing point as a position point of a first positioning baffle, selecting any dividing point in all the dividing points at normal vector included angles with a first point in a range of theta to (180 degrees plus theta) as a position point of a second positioning baffle, taking all the dividing points at normal vector included angles with a second point in a range of theta to (180 degrees plus theta) as position points of a third positioning baffle, and completing the peripheral positioning of automobile glass inserts. Through the peripheral positioning method of automobile glass inserts, ultra-positioning is avoided. The invention also provides a method for positioning glass progressive dies; the method is high in operability and is convenient.

Description

technical field [0001] The invention relates to the field of glass processing, and relates to a positioning method for special-shaped glass, in particular to a peripheral positioning method for an automotive glass insert. Background technique [0002] Injection insert molding refers to the molding method in which the insert is pre-loaded in the injection mold and then injected, and the molten plastic is combined with the insert to solidify to form an integrated part. Nowadays, the types of insert materials include metal, plastic or inorganic non-metal, etc. The insert and plastic parts form an assembly part, so the injection molding insert molding process can bond parts of various materials into one part directly for use The whole machine is assembled, so the assembly cycle can be shortened and the assembly accuracy can be improved. However, in the process of insert molding, it often occurs that the inserts are offset due to the inability to pre-position the inserts well an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/14G06F17/50B29L31/30
CPCB29C45/14B29L2031/30G06F30/15G06F30/17Y02T90/00
Inventor 王乾廷许琼琦刘琼陈文哲叶晓云陈鼎宁王火生
Owner FUJIAN UNIV OF TECH
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