Cast-in excircleself-locking thread air cylinder sleeve and manufacturing technology thereof

Abstract

The invention discloses a cast-in excircle self-locking thread air cylinder sleeve. The cast-in excircle self-locking thread air cylinder sleeve comprises an air cylinder sleeve body; the air cylindersleeve body comprises an excircle thread surface and an inner circle working surface; a plurality of ring grooves distributed in an array form are formed in the excircle thread surface in the lengthdirection of the air cylinder sleeve body; each ring groove is of an inverted conical structure, the two sides of the bottom of the ring groove are provided with one-fourth arcs, the two arcs are oppositely arranged, the openings of the arcs face towards the interior of the ring groove, the height of the ring groove is H, the maximum width of the opening of the ring groove is L1, and the minimum width is L2; and the distance between every two adjacent ring grooves is L3. According to the cast-in excircle self-locking thread air cylinder sleeve provided by the invention, the multiple ring grooves are formed in the outer side of the air cylinder sleeve body, based on the shape of the ring grooves, the combining force between the air cylinder sleeve and a cylinder body is greatly improved, the self locking effect is achieved, the contact area between the air cylinder sleeve and the cylinder body is increased, and the heat dissipation effect is improved.

Description

technical field [0001] The invention belongs to the technical field of cylinder liners, and relates to a cast-in outer circle self-locking thread cylinder liner and a manufacturing process thereof. Background technique [0002] The cast-in cylinder liner can be divided into the outer cast cylinder liner and the outer machined cylinder liner according to the shape of the outer circle, and the outer cast cylinder liner can be divided into ordinary type and burr type; External thread cylinder liner and sprayed aluminum cylinder liner. With the demand for cost reduction and emission reduction of automobiles, the volume and weight of the engine are getting smaller and lighter, which requires the distance between the engine cylinders to be as small as possible, and at the same time, the bonding strength between the cylinder liner and the cylinder block cannot be reduced. There are disadvantages of the cylinder liner: 1. The burr sleeve has high bonding strength, but the thinnest ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a cast-in type outer circular self-locking threaded cylinder liner, which solves the problems of poor bonding strength, poor heat dissipation and high manufacturing cost of the existing cylinder liner and aluminum cylinder block

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