Laser forging in-situ repair method for damaged gear
An in-situ repair and gear technology, applied in laser welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as poor mechanical properties, reduced monitoring precision and accuracy, and poor elimination effects, so as to optimize tissue mechanical properties and avoid The effect of excessive thermal stress and reduction of repair costs
Inactive Publication Date: 2019-09-10
GUANGDONG LASER PEENING TECH CO LTD
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Problems solved by technology
The invention patent with the application number CN201210351302.4 relates to a laser cladding repair process for gears. The size of the repaired gears meets the design requirements, but the process is complicated and the efficiency is low. At the same time, defects such as pores and sparse structures during the laser cladding process cannot be eliminated. Appearance, poor mechanical properties; application number CN201710568505.1 invention patent, involving damaged gear laser real-time dynamic cladding repair and stress control system and method, the repair process is fast and efficient, but the optical infrared coupling dynamic monitoring and measurement adopted The system is easily affected by temperature and light, which reduces the monitoring precision and accuracy, and does not take into account the effect of the repair process on laser cladding and laser shock, nor does it consider the effect of temperature on laser shock forging
After damage repair, the grains of gears are larger, and the effect of eliminating defects such as cracks, pores, and sparse structures is poor
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[0016] The laser shock peening method in the embodiment comprises the following steps:
[0017] Reference as figure 1 and figure 2 The laser forging in-situ repair method for the damaged gear shown includes the following steps:
[0018] S1. Analyze the failure mode of the damaged gear 1, perform cleaning treatment, remove the material at the fractured part, and remove residues, oil stains, and rust at the same time.
[0019] S2. Install the damaged gear 1 on the fixture of the laser forging equipment 2, equip the corresponding image recognition detection device 5, and connect the image recognition detection device 5 and the computer.
[0020] S3. Detect the damaged gear profile by means of image recognition, establish a three-dimensional model on the computer, compare it with the original size parameters, determine the repair amount of each layer of the damaged gear profile, and repair from the layer that is in contact with the damaged gear; thus the embodiment according to...
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Abstract
The invention discloses a laser forging in-situ repair method for a damaged gear and belongs to the field of remanufacturing of gears. The laser forging in-situ repair method comprises the following steps: obtaining a repair scheme of a gear according to a model obtained by a reverse reconstruction technique; and based on the repair scheme, combining with laser forging to repair the damaged position of the gear layer by layer; in the layer by layer repair process, analyzing the dynamic condition of the temperature field of the current laser cladded repair layer by means of computer software, and obtaining a light spot distance d between an impacted forged laser beam and a cladded laser beam by calculating a time t when the temperature of the current repair layer is decreased to the forgingtemperature so as to impact and forge the current repair layer after the distance d between the impacted forged laser beam and the cladded laser beam is kept. By considering the dynamic condition ofthe temperature field of the repair layer and distances among different laser beam light spots, the tissue mechanical property of the repaired gear is optimized, the repair effect is improved and therepair cost is lowered.
Description
technical field [0001] The invention relates to the field of gear remanufacturing, in particular to a laser forging in-situ repair method for damaged gears. Background technique [0002] Gears are important components in the mechanical field and are widely used in actual production. Gear damage forms mainly include wear, gluing, deformation, gear teeth, etc. Common gear repair methods include surfacing welding, cladding, arc deposition, laser cladding and other processes. The invention patent with the application number CN201210351302.4 relates to a laser cladding repair process for gears. The size of the repaired gears meets the design requirements, but the process is complicated and the efficiency is low. At the same time, defects such as pores and sparse structures during the laser cladding process cannot be eliminated. Appearance, poor mechanical properties; application number CN201710568505.1 invention patent, involving damaged gear laser real-time dynamic cladding re...
Claims
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IPC IPC(8): B23K26/00B23K26/356
CPCB23K26/00B23K26/356
Inventor 张永康瞿祥明林超辉吴清源
Owner GUANGDONG LASER PEENING TECH CO LTD