A. Understanding the nature of loads: from application scenarios to mechanical properties
1. Load type analysis
Constant loads (such as conveyor belts, fans): focus on continuous torque and running time
Variable loads (such as cranes, stamping machines): need to calculate peak torque and impact frequency
Inertial loads (such as robotic arms, rotary tables): focus on evaluating inertia matching during the acceleration phase
2. Definition of motion mode
Continuous operation, intermittent operation or frequent start and stop directly affect the thermal balance and life of the motor
B. The core logic of power selection
1. Basic principles
The power must cover the maximum working torque and running speed of the load, and reserve a safety margin
High inertia or frequent start and stop scenarios require additional power capacity to prevent motor overheating
2. Special working condition correction
High temperature, dusty and other environments require matching with higher protection levels and heat dissipation designs
It is recommended to use soft start technology or high starting torque motors for heavy load start scenarios
C. Engineering thinking for reduction ratio matching
1. The core role of the reduction ratio
Convert the high speed of the motor into the low speed required by the equipment, while amplifying the output torque
Too high a reduction ratio will sacrifice efficiency, while too low a reduction ratio may lead to insufficient torque
2. Selection strategy
Light-load high-speed scenario: give priority to low reduction ratio to reduce energy loss
Heavy-load low-speed scenario: adopt high reduction ratio to ensure stable torque output
Dynamic load scenario: balance efficiency and reliability through multi-stage reduction or compound gearbox
D. Manufacturer's selection support system
1. Standardized process tool
Provide a load characteristic questionnaire to guide users to systematically sort out their needs
Online selection platform quickly recommends motor-reducer combinations based on AI algorithms
2. Experience matching database
Provide a pre-verified solution library based on common industry needs (such as food machinery and logistics equipment)
Open customized gearbox design services for special scenarios
E. Selection guidance for typical scenarios
1. Production line conveying equipment
Focus on continuous operation stability, give priority to matching standard power motors and general reduction ratios
2. Automated handling mechanism
Need to balance the start-stop frequency and positioning accuracy, recommend high dynamic response motor + precision planetary reducer
3. Heavy lifting device
Emphasis on overload protection capability, standard electromagnetic brake and impact-resistant gearbox structure
F. Avoid common misunderstandings
1. Blindly pursue high power
Excessive power leads to energy waste, and the best energy efficiency ratio needs to be achieved through accurate load measurement
2. Ignore system matching
The motor and reducer need to be designed as a whole system to avoid "patchwork selection"
3. Ignore maintenance costs
High reduction ratio gearboxes have more stringent lubrication requirements and need to be included in the full life cycle cost assessment
At ZD Motor, we know that every AC gear motor is not only a power source, but also a core partner in the customer's production line. As a professional AC gear motor manufacturer, ZD Motor provides you with the best solutions with its industry-leading mechatronics R&D capabilities.
Ningbo Zhongda Leader Intelligent Transmission Co., Ltd. is professional planetary gearbox manufacturers, established in 2006, we have more than 1500 employees, 66666m2 area and we have got 676 million sales on 2019.
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