A press-fitting tooling and press-fitting process for steering knuckle needle roller bearings

Abstract

The invention provides a press-fitting tool and a press-fitting process for a steering knuckle rolling needle bearing. The press-fitting tool comprises a power part and a press-fitting part which are fixedly connected, wherein the power part comprises an oil cylinder and a connecting plate; one end of the connecting plate is connected with a steering knuckle, and the other end of the connecting plate is connected with the oil cylinder; the press-fitting part comprises a guide rod, guide sleeves and a baffle block; the guide sleeves are separately arranged at the left end and the right end of the guide rod; the baffle block is arranged between the two guide sleeves; and a telescopic pole of the oil cylinder penetrates through the connecting plate and is detachably connected with the guide rod. According to the structural feature that two main pin shaft holes of the steering knuckle are coaxial, a rolling needle bearing is positioned and is pressed through the guide rod and the two guide sleeves, pushing-pulling force generated by the oil cylinder drives the guide rod to advance and retract, so that the baffle block is driven to separately press the rolling needle bearing into the main pin shaft holes, and therefore, the oil cylinder can act once to complete press-fitting work of two rolling needle bearings, positioning is reliable and assembly quality is high; and moreover, press-fitting operation can be performed on a roller path frame, so that operation is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a press-fitting tool and a press-fitting process for a steering knuckle needle roller bearing. Background technique [0002] The steering knuckle of heavy trucks is an important part of the steering axle of the car, which can make the car drive stably and transmit the driving direction sensitively. The function of the steering knuckle is to transmit and bear the front load of the car, support and drive the front wheel to rotate around the kingpin to turn the car. The original steering knuckle kingpin shaft hole is a composite bush structure, the steering knuckle rotates on the kingpin, which is sliding friction, and under complex working conditions, the steering bush will be excessively worn. The use of rolling bearings can change sliding friction into rolling friction, effectively solving the situation of excessive wear of steering bushings. When the original steering knuck...

AI Technical Summary

Problems solved by technology

After adopting needle roller bearings, since the needle roller bearings have a compact radial structure and a smaller cross-section, they require less press-fitting force to achieve press-fitting. The use of the original press-fitting method has the following disadvantages: 1. The output pressure of the press is too high, resulting in a waste of equipment resources; 2. Workers need to move the steering knuckle for loading and unloading operations, which is labor-intensive

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