Method for fabricating dewatering shaft of washing machine

Abstract

The invention relates to manufacturing method of washing machine dehydration shaft. It includes the first stage of manufacturing the first transmission shaft which runs through the outer drum and whose upper end is connected to the inner drum; the second stage of manufacturing the second transmission shaft connected to the electric machine and in which the upper end of the transmission shaft is manufactured; the third stage of manufacturing the insertion slot whose inside diameter is slightly smaller than the external diameter of the bottom of the first transmission shaft manufactured in the first stage; the forth stage of heating and expanding the insertion slot manufactured in the third stage; the fifth stage of inserting the bottom of the first transmission shaft into the expanded insertion slot; the sixth stage of cooling shrinkage of the insertion slot inserted the bottom the first transmission shaft at the fifth stage. Thereby it can reach the effect of getting twice the result with half the effort and improve job engineering capability. While pressing in operation, its center will not be inclined, and can reduce the job badness; it is easy to produce and quality management. As well as, this can improve the bonding strength of the first transmission shaft and the second transmission shaft.

Description

technical field [0001] The invention relates to a washing machine, in particular to a manufacturing method of a washing machine dehydration shaft. Background technique [0002] Generally speaking, a washing machine is a device that puts laundry into washing water, adds appropriate detergent, and uses mechanical force to remove dirt. An outer cylinder with an inner cylinder is installed inside the washing machine casing and is supported by a hanging spring. The lower side of the outer cylinder is provided with a motor connected with a dehydration shaft to selectively rotate the pulsator located on the inner side of the inner cylinder. [0003] figure 1 It is a sectional view of a dehydration shaft of a washing machine in the prior art. The dehydration shaft (10) is installed on the bottom of the outer cylinder (22), and the motor (30) is installed on its lower side, which is connected with the bearing support (40) of the bearings (42, 44) inside, so that it can be connected...

AI Technical Summary

Problems solved by technology

[0010] However, in the manufacturing method of the dehydration shaft of the washing machine in the prior art, because it is operated at normal temperature, the lower end of the first transmission shaft is forcibly pressed into the insertion groove at the upper end of the second transmission shaft (14), which requires a large mechanical force and increases difficulty of homework

At the same time, during the process of pressing the first transmission shaft into the second transmission shaft, it is easy to have a center shift or the transmission shaft is bent, which will cause the inner cylinder to tilt and rotate when using the product, resulting in noise and friction

In addition, the joint strength of the insertion groove of the first transmission shaft and the second transmission shaft is not enough, and the first transmission shaft and the second transmission shaft will slip during long-term use.

Images