1. Source control: high-precision blanking and bevel processing
The blanking accuracy of structural parts is the source of ensuring high-precision operation and long-lasting reliability of the entire machine. It is recommended to use laser cutting process to ensure that the cutting material is flat, smooth and has minimal deformation. At the same time, it is necessary to ensure that the laser-cut bevel angle has zero deviation and the edges are smooth and clean. This can make the strip welding workpieces closely fit and form a weld with almost zero gap, so that the welding seam can be made uniform and consistent, avoiding the hidden dangers of repair welding and partial welding caused by rough blanking, and laying a solid foundation for welding strength and overall rigidity.
2. Process collaboration: primary positioning and datum control
In the processing of the machine base and the reducer mounting base, try to achieve one-time positioning to directly complete the processing of beveling, arc cutting and positioning holes. In this way, the verticality and dimensional accuracy of the end face can be stably controlled at the millimeter level, ensuring that the datum plane is perfectly aligned. This can physically eliminate abnormal vibrations caused by assembly stress and lay a solid foundation for long-term stable service of the entire machine.
3. Structural optimization and heat treatment: stress relief and deformation prevention
During the welding and processing processes, internal stress in the structure is easily generated, leading to natural warping deformation in the later stage. Therefore, the heat treatment process needs to be improved to eliminate internal stress. In terms of structural design, end-face reinforcements and thickened transition structures can be added to disperse concentrated loads and improve impact and extrusion resistance, thereby eliminating deformation defects in key parts such as flange surfaces and ensuring installation coaxiality and transmission accuracy.
4. Precision assembly, inspection and calibration
During the assembly stage, high-precision tooling must be used to ensure positional accuracy (such as controlling the coaxiality error between the planet carrier and the inner ring gear within ±0.02mm), and accurately control the assembly gap. After assembly is completed, high-precision measuring instruments (such as three-dimensional coordinate measuring machines, dial indicators, etc.) should be used to strictly test the flatness and concentricity of the base. If slight deviations are found, calibration can be performed by adjusting the gasket or fine-tuning the position to ensure that the geometric tolerances meet the design requirements.
Through the above-mentioned "cutting-welding-heat treatment-assembly inspection" interlocking process coordination, the accumulated errors can be effectively cut off and ensure the high precision and long-term reliability of the planetary reducer frame after welding.
