Fast trajectory planning method for curved surface laser cladding based on point cloud model
A technology of laser cladding and point cloud model, applied in metal material coating process, coating and other directions, can solve the problems of low efficiency, redundant quantity, and time consumption, and achieve the effect of high efficiency and high accuracy
Active Publication Date: 2019-03-05
XINJIANG SANPU MACHINERY MFG CO LTD
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Problems solved by technology
[0004] 1. It is necessary to reverse the curved surface in the pre-processing stage, repairing and smoothing the curved surface will consume a lot of time, the efficiency is low, and it will seriously affect the engineering application;
[0005] 2. At present, there is a lack of trajectory planning model for curved surface laser cladding, and the calculation of interpolation points is based on the multi-axis CNC milling model
When calculating interpolation points through this model, quantity redundancy greatly affects usage efficiency
Beam attitude calculations are also inaccurate
Method used
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Embodiment 1
[0049] Embodiment 1: A fast trajectory planning method for curved surface laser cladding based on point cloud model, see Figure 1 to Figure 4 ; This method comprises the following steps to realize:
[0050]1) Use Imageware software or Geomagic software to scan the surface of a part with a certain depth of manufacturing defects, misprocessing damage or service damage, remove noise points and simplify processing to obtain a point cloud data Ω, where:
[0051] Ω={P 1 ,P 2 ,P 3 ,...,P n}, P i ={x i ,y i ,z i}∈R 3 ;
[0052] 2) Setting: The surface formed by the set of all points connected to the fixed point (x0, y0, z0) and perpendicular to the fixed vector (A, B, C) is a plane, which extends infinitely, regardless of thickness; The plane is represented by the equation in the algorithm of this paper as:
[0053] A(x-x 0 )+B(y-y 0 )+C(z-z 0 )=0
[0054] The plane passes through the point M(x 0 ,y 0 ,z 0 ) and perpendicular to the nonzero vector
[0055] Defini...
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The invention discloses a curved surface laser cladding rapid track planning method based on a point cloud model. The curved surface laser cladding rapid track planning method is implemented by the following steps that (1), the surface of a part with manufacturing defects of a certain depth, or mistaken machining damage or service damage is scanned and subjected to noise point removing and simplifying treatment by using software to obtain point cloud data omega; (2), parallel planes are set and called cutting pieces, a point cloud is cut through the parallel planes, and it is stipulated that the motion direction of a laser head is the direction of the cutting pieces; (3), intersections of the cutting pieces and the point cloud are calculated; (4), interpolation points are searched; and (5), the posture of a laser beam is calculated.
Description
technical field [0001] The invention relates to a trajectory planning method for laser cladding on complex curved surfaces, in particular to a fast trajectory planning method for laser cladding on curved surfaces based on a point cloud model. Background technique [0002] Laser cladding is to heat and melt materials with special properties on the surface of the substrate to obtain a high-quality cladding layer that forms a good metallurgical bond with the substrate. According to its application characteristics, parts with certain deep manufacturing defects, misprocessing damage or service damage can be repaired; at present, laser cladding equipment can realize cladding of flat plates, cladding of shaft parts, and melting of simple rotary outer circular parts cover. However, for laser cladding on complex curved surfaces, it has always been an engineering problem because of the control of laser defocus and the control of laser beam attitude. [0003] The current common pract...
Claims
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IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 黄勇方从旺潘江如王玲张海明
Owner XINJIANG SANPU MACHINERY MFG CO LTD