Pin locking method
Ordinary cage: The needle is locked by the linear contact between the needle busbar and the edge of the window hole section.
Welding cage: locked by direct contact between the needle busbar and the inclined surface of the window hole
Window hole symmetry
Ordinary holder: During the punching process of the window hole, the symmetry of the window hole is ensured by the indexing plate and the center
Welding cage: It is ensured by the parallelism of the material strip, so there is a high requirement for the material strip.
Uniformity of window hole size
During the process of punching the last window hole, there may be quality issues with the deformation of the last window hole beam caused by the punching force.
Welding cage: The window holes are one-time stamped and formed, all guaranteed by high-precision molds.
Cage wall thickness
Ordinary cage: After stretching, the wall thickness of the raw material of the ordinary cage will become thinner, for example, a cage made of 0.5 steel plate usually only has a thickness of about 0.4.
Welding cage: Without stretching process, the steel strip is directly rolled, so the thickness of the steel strip is the thickness of our product, which further ensures the strength of the cage.
Process comparison
Ordinary holder:
1. Blanking forming, stretching, car edge, car bottom, punching window holes, rolling
2. Cold processing processes are all carried out individually, which can easily cause differences during the production process.
3. When punching the window hole, a toothed tip is used to support the product, which is driven by the indexing plate to rotate for one cycle. Therefore, after processing, the end of the product that is supported by the tip will have many deep and shallow toothed marks, which are difficult to handle even during throwing, thereby affecting product quality.
Welding holder:
1. Window punching, rounding, and welding
2. The process is relatively few and simple, especially in terms of punching window holes, which has obvious advantages.
3. The equipment has extremely high accuracy and the consistency of mass-produced products is excellent.
Mold comparison
Ordinary holder:
1. The mold structure is simple;
2. The precision required for the mold is relatively low.
Welding holder:
1. The mold structure is complex and the cost is extremely high;
2. The mold is processed using imported materials;
3. In order to ensure quality, our mold design and processing accuracy requirements are extremely high. During the mold processing process, a large number of high-precision mold processing equipment such as imported slow wire cutting machines and high-precision precision carving machines are used.