The flanging process of the bearing seat involves stretching the outer edge of the bearing seat backwards to fit with the inner wall of the pipe Contact surface. When installed on the pipe, it can have a larger contact surface and a suitable and uniform interference fit, so that the bearing seat can be firmly installed on the pipe and avoid welding deformation. Through this process, the end face of the bearing seat is further shaped and no longer rebounds. The swing and radial runout of the bearing seat end face and the bearing seat axis can be controlled within 0.1mm. Provide assurance for the next installation process.

The shaft cutting is completed using a sawing machine, and the cutting length is adjusted to the basic size ± 0.5mm. Sawing machine cutting can avoid external bending of the shaft during the processing. (The operator fills out the process record form)

The shaft chamfering process is completed by a dedicated flat drill, and the cutterhead is equipped with a positioning device to control the chamfer size, ensuring consistent chamfer size. And the efficiency is very high. Generally, workers can complete 1500-2000 pieces per shift.

Install slot equipment for processing roller shafts, determine the quantity of each processing based on the length and diameter of the shaft, and after positioning, perform end milling feed processing to ensure accurate groove width and depth for each batch of processing. A single class can complete 800-1200 tasks. (The operator fills out the process record form).

Processing card spring groove equipment, automatic clamping, double groove automatic cutting. It has the advantage of precise distance between two slots and high efficiency. The class yield ranges from 1000 to 1500 roots. (The operator fills out the work task record form).

Pipe cutting can automatically complete feeding, clamping, and cutting actions, and the entire pipe cycle is completed. The class output can reach 500-1000 pieces.

The flat end of the pipe and the inner and outer corners of the car can be controlled within ± 0.1 millimeters in length after processing. This provides good conditions for controlling the axial fitting accuracy of roller assembly in the future. The class production can easily complete 800-1500 pieces.

Completed in a steel shot sandblasting machine to remove iron oxide and provide a clean surface for electrostatic spraying, enhancing the adhesion of the paint film.

The purpose of chamfering the bearing seat is to facilitate installation when the bearing seat is pressed into the pipe.

The assembly of the bearing seat and pipe requires the outer diameter of the bearing seat to be greater than the inner diameter of the pipe by 0.05-0.15 millimeters. The tooling has preliminarily centered the bearing seat and pipe, and the bearing seat has a large chamfer, which can be smoothly pressed into the pipe and form an interference fit with the pipe for installation. Because the inner wall of the pipe has not been processed with material removed, there will be no accumulated processing errors. It can also have a correction effect on the original ellipse of the pipe.

The pipe body with the installed bearing seat is welded here, and the welding starts with an arc during the rotation of the workpiece, and the arc is extinguished at any angle (360 °+). Welding both ends simultaneously, because there is a circular arc when flipping the bearing seat, a standardized groove is formed at the welding point after installation, making the welding firm, the weld beautiful, and the deformation small. (The operator fills out the special process monitoring record form)

Assembling the rollers is completed in the press machine, divided into two parts: assembling the bearings and assembling the seals. First, install and test the bearings. If there are no problems, then install the seals. The illustrated seal is a patented product of the company. The snap ring used for axial control is very close to the bearing, and there is no deformation space in the seal. The axial control effect is very good. The roller is divided into a labyrinth and a contact two-stage seal, with the contact seal and the shaft in direct contact, resulting in relatively minimal resistance.