Gear oil pump processing and forming technology

As an important fluid conveying equipment, the machining and forming technology of gear oil pump directly affects the performance, performance and service life of the product. The following is a detailed explanation of the machining and forming technology for gear oil pumps:

1、 The basic structure and working principle of gear oil pump

Gear oil pump is mainly composed of pump body, gear shaft, end cover, seals and other components. Its working principle is based on the meshing motion of gears. When the driving gear rotates, it drives the driven gear to rotate together, thereby forming a suction chamber and a discharge chamber in the pump body. As the gear rotates continuously, the volume of the suction chamber gradually increases, creating negative pressure that draws the liquid into the pump; And the volume of the discharge chamber gradually decreases, squeezing the liquid out of the pump to achieve fluid transport.

2、 Overview of gear oil pump machining and forming technology

The machining and forming technology of gear oil pumps covers multiple stages from raw material selection, blank preparation, machining, heat treatment to assembly and debugging. Each stage requires strict control of process parameters and quality requirements to ensure the performance and quality of the final product.

3、 Raw material selection and blank preparation

The key components of gear oil pumps, such as gears and pump bodies, are usually made of high-performance alloy steel or stainless steel materials. The selection of raw materials should be based on the product's usage environment and performance requirements, and must undergo strict quality inspection to determine that their chemical composition and physical properties meet the standard requirements.

The preparation of raw materials usually involves casting or forging processes. The casting process is suitable for large-scale production, but attention should be paid to controlling casting defects such as porosity and shrinkage. The forging process can obtain the metal structure and mechanical properties, but the cost is relatively good. Regardless of the process used, the dimensional accuracy and surface quality of the blank must meet the requirements for subsequent machining.

4、 Machining Technology

Machining is the core process in the machining and forming of gear oil pumps. The tooth profile machining of gears is usually carried out using hobbing machines or gear hobbing machines. Hobbing machines are suitable for large-scale production, while gear hobbing machines can achieve higher tooth profile accuracy. In the process of tooth profile machining, it is necessary to strictly control the feed rate and cutting depth of the rolling cutter or hobbing tool to determine the accuracy and surface quality of the tooth surface.

The machining of the pump body includes multiple steps such as turning, milling, drilling, etc. Turning is used to machine the outer circle and inner hole of the pump body, milling is used to machine the end face and groove of the pump body, and drilling is used to machine the oil hole and bolt hole of the pump body. During the machining process, the dimensional accuracy and fit clearance of each component must meet the requirements.

5、 Heat treatment technology

Heat treatment is an important step in improving the material properties of gear oil pumps. Key components such as gears usually require heat treatment processes such as carburizing, quenching, and tempering to enhance their hardness, performance, and durability. The carburizing treatment forms a layer of high carbon on the surface of the gear, while the quenching treatment prevents this layer from cooling and hardening slowly. The tempering treatment is used to remove quenching stress and improve toughness.

During the heat treatment process, it is necessary to strictly control parameters such as temperature, time, and cooling method to determine the material properties obtained. At the same time, attention should be paid to issues such as deformation and cracking after heat treatment, and corresponding measures should be taken to prevent and correct them.

6、 Assembly and Debugging Technology

Assembly and debugging are the subsequent steps in the machining and shaping of gear oil pumps. During the assembly process, the precision of fit and sealing performance of each component are required. For example, the clearance between gears and shafts, the preload of bearings, and the installation of seals all need to be strictly controlled. After assembly, debugging and testing are still required to verify the performance and performance of the pump.

The debugging process includes multiple aspects such as no-load operation testing, pressure testing, flow testing, etc. Through debugging and testing, problems with the pump during operation can be identified and resolved in a timely manner, ensuring that the product's performance and quality meet the requirements.

7、 Application of Processing Technology

With the continuous development of technology, more and more processing techniques are being applied to the machining and forming of gear oil pumps. For example, CNC machining technology can achieve machining with good accuracy and speed; Laser processing technology can be used for the processing of complex shaped components such as pump bodies; 3D printing technology can be used for fast prototyping and spare parts.

The application of these processing technologies not only improves the machining accuracy and speed of gear oil pumps, but also reduces production costs and cycles, providing new opportunities and challenges for the development of gear oil pumps.

In summary, the machining and forming technology of gear oil pumps is a complex process involving multiple links. By strictly controlling the process parameters and quality requirements of each link, the performance and quality of the later products can meet the requirements. Meanwhile, with the continuous development of technology, the application of processing technology will bring more and more innovation and development to the machining and forming of gear oil pumps.