CNC spinning is widely used in the field of auto parts. Our common spinning parts are shock absorber shells, mufflers, three-way catalysts (commonly known as exhaust pipes), etc. Auto parts are mostly pipe parts. Spin production.
I. Spinning of automobile shock absorbers
The purpose of the shock absorber is to quickly attenuate the vibration of the frame and the body, and improve the smoothness and comfort of the car. Most of the mechanical automobile shock absorbers are spring shock absorbers. Like some high-end automobile shock absorbers, most of them use air shock absorbers. The shock absorber shell is made by spinning. The advantages of spinning are mainly : First, the molding of spin-formed products is flexible. Secondly, the spinning process can make the material grains finer, cold work hardening, and increase the hardness and tensile strength. Third, CNC spinning has turning-spinning integration. After spinning, turning can be performed directly without secondary clamping, and the diameter accuracy of the product is better.
Case of LEICHMAN CNC Spinning Automotive Shock Absorber
II.Automotive three-way catalytic converter spinning
The three-way catalytic converter is the most important off-board purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC and NOX emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. . The three-way catalytic converter was originally made of iron tubes. With the continuous improvement of spinning technology, most of the three-way catalytic converters on the market are made of stainless steel tubes. It is higher than iron. Because the tensile strength of stainless steel is relatively large and the required spinning pressure is greater, the phenomenon of insufficient clamping force of the fixture is prone to occur. Affect the production efficiency and quality of the product.
III.Spinning of automobile muffler
The car muffler is mainly used to reduce the noise generated during the operation of the engine of a motor vehicle. The principle is that the car exhaust pipe is composed of two pipes of different lengths. It is equal to half of the wavelength of the sound wave emitted by the car, which causes the two columns of sound waves to interfere with each other, reducing the transmitted sound, and thereby reducing the noise.
The muffler product wall thickness is generally lower than that of the three-way catalytic converter. However, most of the mufflers need to go through a surface polishing process after spinning. If the spinning pattern is uneven during the closing process, it will make polishing difficult. Therefore, the design of the spinning fixture is extremely important.
Based on the above, there are many applications for CNC pipe spinning in automotive pipe parts. In view of the advantages of high processing efficiency, material saving, and ease of automated production of CNC pipe spinning, CNC pipe spinning will continue to be used in automotive production.
