Views: 0 Author: Site Editor Publish Time: 2024-11-29 Origin: Site
Power Source and Transmission Components: Mechanical transmission bending machines usually use an electric motor as the power source. The power generated by the electric motor is transmitted to the reducer through a coupling. The function of the reducer is to reduce the rotational speed and increase the torque so that it can meet the requirements of greater force output during the bending process. The power output from the reducer is further transmitted through various transmission components, such as gears, racks, sprockets, chains, and worm gears.
Functions and Coordination of Each Component: Gear transmission has the characteristics of accurate transmission ratio and high efficiency, enabling precise transmission of power and adjustment of rotational speed; the rack is often used in conjunction with gears to convert rotational motion into linear motion, facilitating the corresponding actions of the bending die; sprocket and chain transmission is suitable for long-distance transmission and can buffer impacts to a certain extent; worm gear transmission has a large transmission ratio and self-locking characteristics, ensuring that the position of the die can remain stable during certain specific bending actions. These transmission components work together to transmit the power to the bending die in the predetermined manner.
Fixing the Copper Tube and Installing the Die: Before performing the bending operation, the copper tube needs to be accurately placed in the specific position of the bending die and firmly fixed by clamping devices to prevent the copper tube from shifting during the bending process. The bending die is usually designed and manufactured according to different copper tube diameters and bending requirements, and its shape and size match the copper tube to be bent.
The Movement of the Die Drives the Bending of the Copper Tube: When the mechanical transmission bending machine is started, the power transmitted through a series of transmission components will drive the bending die to move. If the die rotates around the copper tube through gear-rack transmission, the copper tube will be gradually bent along the contour of the die under the drive of the die. For example, in some simple manual mechanical bending machines, the operator rotates the hand wheel, which drives the connected gear to rotate. The gear then meshes with the rack, causing the bending die connected to the rack to rotate around the copper tube, thereby realizing the bending of the copper tube. During this process, the movement speed and angle of the die depend on factors such as the transmission ratio of the transmission components and the magnitude of the operating force applied by the operator.
Hydraulic Pump: One of the core components of a hydraulic transmission bending machine is the hydraulic pump. The main function of the hydraulic pump is to convert the mechanical energy input by the electric motor into hydraulic energy by continuously sucking in low-pressure oil and outputting high-pressure oil, providing a power source for the entire hydraulic system. Common types of hydraulic pumps include gear pumps, vane pumps, and plunger pumps. Different types of hydraulic pumps have different performance characteristics and can be selected according to the specific design requirements and working loads of the bending machine.
Hydraulic Cylinder: The hydraulic cylinder is the executive element that realizes linear motion in the hydraulic system. When high-pressure oil enters one side chamber of the hydraulic cylinder, it will push the piston to move linearly within the cylinder body, thereby generating a force in the linear direction. In a bending machine, the hydraulic cylinder is usually directly connected to the bending die, and through the linear movement of the piston, the die is driven to apply pressure to the copper tube, causing it to bend.
Hydraulic Valve: The hydraulic valve plays a crucial role in the hydraulic system as it is used to control the flow direction, pressure, and flow rate of the oil. For example, a directional valve can control the flow direction of the oil between different chambers of the hydraulic cylinder, thereby determining the movement direction of the piston; a pressure valve can adjust the pressure of the oil to ensure that the system works within a safe pressure range and can also precisely control the pressure applied to the copper tube according to the bending requirements; a flow valve can control the flow rate of the oil entering the hydraulic cylinder, thereby adjusting the movement speed of the piston, that is, controlling the bending speed.
Oil Pipes and Other Auxiliary Components: Oil pipes are the channels that connect the hydraulic pump, hydraulic cylinder, and hydraulic valve and other components, used to transport the oil. In addition, the hydraulic system may also include auxiliary components such as an oil tank, a filter, and a pressure gauge. The oil tank is used to store the oil, the filter is used to filter out impurities in the oil to prevent them from entering the system and damaging the components, and the pressure gauge is used to monitor the pressure situation of the system in real time.
Oil Flow and Pressure Transmission: When the hydraulic bending machine is started, the electric motor drives the hydraulic pump to operate. The hydraulic pump sucks in the low-pressure oil from the oil tank and converts it into high-pressure oil, and then transports the high-pressure oil to the hydraulic valve through the oil pipe. The hydraulic valve precisely controls the flow direction, pressure, and flow rate of the oil according to the preset parameters and bending requirements, and transports the appropriate high-pressure oil to the corresponding chamber of the hydraulic cylinder.
The Hydraulic Cylinder Drives the Die to Bend the Copper Tube: The high-pressure oil entering one side chamber of the hydraulic cylinder pushes the piston to move linearly, and the bending die connected to the piston also moves, applying pressure to the copper tube, causing it to bend according to the predetermined angle and shape. By adjusting the direction, pressure, and flow rate of the hydraulic valve, the movement direction, speed, and pressure applied to the copper tube can be precisely controlled, thereby realizing precise control of the bending angle, speed, and force of the copper tube. For example, in the bending processing of automobile air-conditioning copper tubes, using a hydraulic bending machine can quickly and accurately complete the bending of various complex shapes. The operator can adjust the parameters of the hydraulic valve according to the specific bending requirements of the copper tube, such as the bending angle and radius, so that the copper tube is bent at the appropriate speed and pressure, ensuring the bending quality and precision.
Core Components of the CNC System: CNC bending machines take a computer numerical control system as the core, which mainly consists of hardware and software parts. The hardware part includes a central processing unit (CPU), memory, input/output interfaces, servo drivers, sensors, etc. The central processing unit is the brain of the CNC system, responsible for processing various data and instructions; the memory is used to store programs, parameters, and data; the input/output interfaces are used to exchange data with external devices, such as receiving the parameters input by the operator and outputting the system status to the display; the servo drivers are used to drive the motors or hydraulic systems to move precisely according to the instructions of the CNC system; the sensors are used to monitor various data during the bending process, such as angles and displacements. The software part includes an operating system, programming software, control programs, etc. The operating system provides the running environment for the CNC system, the programming software is used by the operator to write bending programs, and the control programs precisely control the bending process according to the input parameters and written programs.
Programming Input Parameters: The operator inputs the parameters such as the bending angle, radius, length, etc. into the CNC system through programming according to the bending requirements of the copper tube. During the programming process, it is necessary to accurately input the various physical property parameters of the copper tube, such as the diameter, wall thickness, material, etc., as well as the various operating parameters required for bending, such as the bending speed, pressure, etc. These parameters will serve as the basis for the CNC system to generate control instructions.
Generation and Execution of Control Instructions: The CNC system processes and calculates the input parameters to generate precise control instructions. These control instructions will be sent to the servo drivers, and the servo drivers will drive the corresponding components of the motors or hydraulic systems to move according to the instructions. For example, if it is a CNC bending machine driven by motors, the servo drivers will drive the motors to rotate according to the predetermined trajectory and speed, and the motors will then drive the bending die to move through mechanical transmission devices; if it is a CNC bending machine driven by a hydraulic system, the servo drivers will drive the hydraulic pump, hydraulic cylinder, etc. of the hydraulic system to move according to the predetermined trajectory and speed, and then drive the bending die to move.
Real-Time Monitoring and Feedback Adjustment: During the bending process, the sensors equipped will monitor various data during the bending process, such as angles and displacements, and feed back the data to the CNC system. The CNC system compares the data fed back with the preset parameters. If any deviation is found, it will be adjusted and corrected in time to ensure the bending precision. For example, in the manufacturing of some high-end refrigeration equipment, CNC copper tube bending machines can efficiently and precisely complete the complex bending processing of a large number of copper tubes, improving production efficiency and product quality. During this process, the sensors monitor the bending angle of the copper tube in real time. If the actual bending angle is found to deviate from the preset angle, the CNC system will immediately adjust the movement of the motors or hydraulic systems to make the bending angle of the copper tube return to the preset value as soon as possible, thereby ensuring the bending precision.
