Manufacturing method of universal ball cage holder

Abstract

The manufacturing method of the universal ball cage holder comprises the following steps that A, alloy powder and an adhesive containing polyformaldehyde are mixed in proportion, and feed is obtained; b, the feed is subjected to banburying and granulation to be made into columnar particles with the diameter phi being 3 * 5 mm; c, preparing the columnar particles into a green body through an injection molding process; d, polyformaldehyde in the green body is removed through a catalytic degreasing technology, and then the universal ball cage holder is obtained through high-temperature sintering; wherein the alloy powder comprises ASTM 86 series low-alloy steel powder, ASTM 51 series low-alloy steel powder and 20CrMnTi alloy steel powder, the mass ratio of the alloy powder to the adhesive is (87.7-91.2)%: (8.8-12.3)%, the mass ratio of polyformaldehyde in the adhesive is 80-95%, the green body comprises a forming body, the size of the forming body is proportionally enlarged according to the size of the universal ball cage holder, and the size of the forming body is larger than that of the universal ball cage holder. According to the manufacturing method, metal material waste approaches to zero, the working procedures are simple, the number of steps is small, the production efficiency is high, the yield is high, stress residues do not exist, cost is low, and the manufacturing method is suitable for mass production of universal ball cage retainers.

Description

technical field [0001] The invention relates to the technical field of manufacturing automobile universal joint parts, in particular to a method for manufacturing a universal cage cage. Background technique [0002] The automobile manufacturing industry is one of the pillar industries of the national economy, and its technical level determines the level of the national manufacturing industry. In recent years, in order to realize the basic national policy of "green development", automobile products have been continuously upgraded, and new energy vehicles will gradually replace existing petrochemical energy vehicles, and new energy vehicles put forward higher requirements for the lightweight of vehicles, which put forward higher requirements for the quality and design of auto parts, so when designing important functional parts on the car, it is necessary Comprehensively consider important indicators such as its safety, functionality, economy and emissions. [0003] The consta...

AI Technical Summary

Problems solved by technology

[0004] Hot forging refers to the process of forging above the metal recrystallization temperature. During forging, the metal flows violently, the contact time between the forging and the mold is long, the process is complicated, there are many steps, and the production efficiency is low. The thermal stability of the mold, high temperature strength, hardness, Impact toughness, heat fatigue resistance, wear resistance, and processing performance are high, and the material utilization rate of ordinary forging is low, generally only about 50%. Even if powder hot forging is used, the material utilization rate is mostly around 80%. , it is difficult to fully utilize the material

[0005] Cold rolling forming refers to the processing technology of changing the shape of the object through external force. Usually, the mold is continuously rolled and spun on the workpiece, and pressure is applied to the workpiece locally and sequentially, so as to achieve the effect of overall forming. The process is complicated and the steps Many, the production efficiency is low, the size of the blank is large, there is a certain waste of material, and there is residual stress in the product

[0006] Regardless of hot forging or cold rolling, it is difficult to form the cage-shaped body of the universal cage cage and the features such as windows, oil grooves, and barb grooves on the body at one time. Stamping, milling, turning, etc. are required in the later stage. The process is coordinated with the processing, the process flow is many, and multiple clamping is required. It is difficult to maintain the consistency of each feature position. In mass production, the proportion of defective products is high.

[0007] CNC machining refers to precision machining controlled by computer digitalization. It is usually processed by CNC machining center, which can be formed at one time, and the machining accuracy and product yield can be guaranteed, but the production efficiency is low, the equipment cost is high, and there is residual stress in the product.

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