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Forming grinding wheel laser shaping track planning method

A laser shaping and trajectory planning technology, applied in laser welding equipment, grinding/polishing equipment, abrasive surface adjustment devices, etc., can solve the problems of laser beam unable to remove material, laser beam idling, reduction of shaping efficiency, etc. The effect of laser spot overlap rate and scanning track line overlap, improving shaping efficiency and shortening laser processing time

Pending Publication Date: 2022-06-24
HUNAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to propose a laser shaping trajectory planning method for a shaped grinding wheel to solve the problem mentioned in the background art that when the effective power density of the laser is lower than the abrasive particle laser removal energy threshold, the laser beam cannot remove the material, resulting in the laser beam being empty along the shaping trajectory. The problem of reduced walking and shaping efficiency

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  • Forming grinding wheel laser shaping track planning method
  • Forming grinding wheel laser shaping track planning method
  • Forming grinding wheel laser shaping track planning method

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Embodiment 1

[0089] as attached Figures 1 to 6 As shown, the laser shaping trajectory planning method for forming grinding wheels described in this embodiment specifically includes the following steps:

[0090] Step 1, laser shaping trajectory planning of forming grinding wheel, as attached Figure 1-3 shown. Since the shaping trajectory of the V-shaped grinding wheel is symmetrical on the left and right, it can be divided into left and right sides. Taking the right half as an example, the laser shaping trajectory planning is carried out. The total planned length can be expressed as:

[0091] L=L 0 +L 1 +L 2 +...+L n

[0092] Step 2, determine the laser removal energy threshold E of abrasive particles 阈值 ;

[0093]

[0094] In the formula, is the laser energy density at the center of the beam, which can be expressed as: e p is the energy of a single pulse. ω0 is the spot radius of the laser beam at the focal point. w is the width of the ablation pit / groove, when w=0, E...

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Abstract

The invention discloses a formed grinding wheel laser shaping trajectory planning method, which comprises the following steps of: establishing a theoretical model of laser effective power density and an abrasive particle laser energy removal threshold value by taking the situation that a laser beam cannot remove abrasive particles after the laser effective power density is smaller than the abrasive particle laser energy removal threshold value as a trajectory planning basis; the situation that the laser beam still moves along the shaping track in an idle mode after abrasive particles cannot be removed in the later shaping stage is avoided, and the shaping efficiency is improved. Meanwhile, in order to further improve the shaping precision, a multi-track scanning method is designed, and the laser spot overlapping rate and the scanning track line overlapping rate are improved.

Description

technical field [0001] The invention belongs to the technical field of grinding wheel dressing, and in particular relates to a laser shaping trajectory planning method for forming grinding wheels. Background technique [0002] The key to forming grinding wheel grinding is that dressing has become an industry consensus. Due to its complex cross-sectional profile, extremely high abrasive grain hardness, and high bond holding strength, it is very difficult to dress forming grinding wheels, especially super-hard abrasive forming grinding wheels. Due to the advantages of invulnerability, high controllability, and non-contact, the laser dressing method is especially suitable for dressing forming grinding wheels with complex cross-sectional profiles. When shaping, the laser beam needs to continuously and repeatedly scan the grinding wheel material along the shaping trajectory. In the later stage of shaping, with the increase of the incident angle and the defocus amount, the laser ...

Claims

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Application Information

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IPC IPC(8): B23K26/362B23K26/70B24B53/06B24B53/12G06F17/11
CPCB23K26/362B23K26/702B24B53/06B24B53/12G06F17/11
Inventor 邓辉何船孙奕康
Owner HUNAN UNIV OF SCI & TECH
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