Method for improving punching stability of photovoltaic glass stepped holes

Abstract

The invention discloses a method for improving the punching stability of photovoltaic glass stepped holes. The method includes the following steps that the starting point position of a focus of a 3D galvanometer is adjusted, laser is focused to the lower surface of a to-be-machined material, the coordinate positions of the point are defined as (0, 0, 0), and the hole axis coordinates of the to-be-machined material are defined as (0, 0, z); the laser starting point moves to the (r1, 0, 0) position and moves in a spiral line manner with the (0, 0, 0) used as the circle center and the r1 used asthe outer radius; after the laser starting point passes through a layer of spiral line, the focus Z axis controlled by the 3D galvanometer is lifted, and then machining is continued; when the Z axis reaches the second layer, the laser starting point moves to the (r11, 0, h) position and moves in a spiral line manner with the (0, 0, h) used as the circle center and the r11 used as the inner radius,and the advancing direction is changed into a spiral line from inside to outside until the laser passes through the spiral line of the layer; and after the focus Z axis controlled by the 3D galvanometer is lifted, machining is continued, when the Z axis reaches the third layer, the laser starting point moves to the (r1, 0, 2 h) position, and the (0, 0, 2 h) is used as the circle center. Accordingto the method, a product with the smooth hole wall, the high machining precision and the good stability can be obtained.

Description

technical field [0001] The invention relates to the technical field of glass step hole processing, in particular to a method for improving the stability of punching a photovoltaic glass step hole. Background technique [0002] Glass step hole drilling is suitable for processing glass products of different materials, specifications, thicknesses, etc. It belongs to the field of glass laser processing and can be widely used in architectural glass, handicraft glass, photovoltaic glass and other industries. The traditional method of processing step holes is to use diamond grinding head at high speed Rotating contact glass material for processing belongs to contact processing, which has the following disadvantages: ① Glass has edge burst and scratch problems; ② Holes smaller than the size of the drill bit cannot be processed; ③ Step holes with complex shapes cannot be processed, and the processing capacity is limited; ④ The stepped part of the stepped hole is not accurate and smoo...

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Problems solved by technology

[0002] Glass step hole drilling is suitable for processing glass products of different materials, specifications, thicknesses, etc. It belongs to the field of glass laser processing and can be widely used in architectural glass, handicraft glass, photovoltaic glass and other industries. The traditional method of processing step holes is to use diamond grinding head at high speed Rotating contact glass material for processing belongs to contact processing, which has the following disadvantages: ① Glass has edge burst and scratch problems; ② Holes smaller than the size of the drill bit cannot be processed; ③ Step holes with complex shapes cannot be processed, and the processing capacity is limited; ④ The stepped part of the stepped hole is not accurate and smooth

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