The linear optical axis is a product that has a guiding function of a sliding bearing and can perform linear motion. The necessary conditions required by these linear motion systems are: simple design, better execution ability, low maintenance cost, use of strictly selected strong and durable materials, high frequency heat treatment, accurate outer diameter size, roundness, and straightness and surface treatment etc.
Special attention should be paid to correct the lengths of the four tie rods during assembly or after dismantling the mold adjusting nuts, and the distance between the mold adjusting nuts and the rear formwork should also be adjusted.
In terms of design, it is necessary to avoid sharp changes in the shaft diameter. At the step or undercut, try to use a large fillet transition, choose a material with better comprehensive performance, and special treatment must not only solve the surface hardness of the thread (to be wear-resistant) but also try to To reduce surface stress concentration, it is necessary to improve surface finish and minimize stress damage.
It is necessary to ensure the processing accuracy, especially the length of the connecting rod, the height of the bearing seat, the accuracy of the crosshead, the positioning accuracy of the bearing seat on the template, etc.
When flash occurs on the product, the cause should be analyzed, and the clamping force should not be increased one-sidedly. If the mold is found to be uneven, it should be ground, and if the length of the connecting rod is uneven, it should be corrected, including copper pads, paper, etc., or correct the mold adjusting nut.
The material of the guide post is generally made of bearing steel, hot work die steel, easy-turning iron, etc., and the bearing steel SUJ2 is used in a large amount, which greatly enhances the durability and replaceability of the guide post in terms of guiding performance. The guide post and components consist of the outer guide post assembly and the inner guide post assembly, which have a beautiful metallic luster.
