CN105673502A - Manufacture method for rolling piston for compressor - Google Patents

Abstract

The invention discloses a manufacture method for a rolling piston for a compressor. The manufacture method comprises the following steps: (1), the rolling piston is machined according to shape requirement; (2), an axial through hole which is matched with a sliding vane head and penetrates through the piston is formed in the outer surface of the piston; (3), the rolling piston is subjected to thermal treatment till the piston hardness requirement is met; (4), the outer surface, the inner surface, the upper end surface and the lower end surface of the rolling piston and the inner surface of the through hole are machined till the precision meets requirement; and (5), a channel is machined from the outer surface of the rolling piston to the through hole and communicates with the through hole. According to the manufacture method, the inner surface and the outer surface of the rolling piston are machined completely first, and then the channel is machined on the outer surface, so that when the inner surface and the outer surface of the rolling piston are machined, the concentricity, the cylindricity and size requirement of the inner surface and the outer surface can be guaranteed. Besides, the inner surface and the outer surface of the rolling piston can be finely machined more easily; the precision can meet requirement easily; the manufacture of the whole rolling piston is very convenient; and the precision is high.

Description

The manufacture method of compressor rolling piston

Technical field

The present invention relates to a kind of compressor rolling piston, particularly to its manufacture method.

Background technology

Rotary compressor for refrigerant, it utilizes piston to rotate and refrigerant gas is compressed, and has put much years on market, is one of the most frequently used at present compressor.

Rolling piston is the strength member of rotary compressor for refrigerant, its bias being arranged on compressor eccentric shaft turns, and supports the use with slide plate, and slide plate is in close contact with the contact surface on rolling piston under spring force, composition movable sealing, rolls along cylinder wall during refrigeration. Currently, for response national environmental protection, energy-conservation, the requirement that reduces discharging, novel environment-friendly refrigerant is constantly updated and is regenerated, and compressor itself proposes efficient, energy-conservation requirement also more strictly, and the working environment in its cylinder also becomes more harsh. Therefore, the rolling piston that can be suitably used under the rigor condition such as high load capacity, high power, high temperature, high pressure is had higher requirement.

Existing rolling piston is as it is shown in figure 1, arrange the through hole 2 holding slide plate head in its outer ring, this through hole 2 runs through the outer ring of rolling piston by passage 21, and the head of slide plate is just put in through hole 2, is connected tightr when therefore coordinating with slide plate.

Above-mentioned rolling piston adopts existing machining very difficult. During processing rolling piston internal-and external diameter, generally with outer surface for benchmark, inner surface, outer surface refine, but owing to there being passage 21 on outer surface, therefore, refine precision at passage place and be difficult to ensure that, the serious generation that will cause defective work. Additionally, due to the existence of rolling piston outer surface breach, when manufacturing rolling piston, the concentricity of the surfaces externally and internally of rolling piston, circularity and size are difficult to ensure that.

Summary of the invention

The technical problem to be solved is overcome the above-mentioned deficiency of prior art and provides the manufacture method of a kind of compressor rolling piston so that it is can more easily manufacture.

This invention address that the technical scheme that above-mentioned technical problem adopts is:

The manufacture method of compressor rolling piston, it comprises the steps:

(1), rolling piston is processed by shape need;

(2) in outer surface of piston, output the axially extending bore of the through piston adapted with slide plate head;

(3), heat treatment rolling piston is to meeting piston hardness requirement;

(4), processing rolling piston outer surface, inner surface, upper and lower biend and through hole inner surface, reach requirement to precision;

(5), passage is processed and through with through hole by rolling piston appearance towards through hole.

As stated above, so that it may produce qualified compressor rolling piston.

Above-mentioned passage is preferably splayed, so can better coordinate with slide plate head.

Compared with prior art, it is an advantage of the current invention that: owing to first complete machining goes out inner surface and the outer surface of rolling piston, open walk on the outer surface again, therefore when processing the surfaces externally and internally of rolling piston, it is possible to ensures the concentricity of surfaces externally and internally, cylindricity and dimensional requirement. And, rolling piston surfaces externally and internally is easier to polish, and precision easily reaches requirement, and whole rolling piston manufactures very convenient, and precision is high.

Accompanying drawing explanation

Fig. 1 is the configuration diagram of existing compressor rolling piston.

Fig. 2 is the partial enlarged drawing of Fig. 1.

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.

As shown in Figure 1 and Figure 2, being provided with the through hole 2 axially penetrating through piston in compressor rolling piston 1 outer surface 4, outer surface 4 and through hole 2 are run through by passage 21 and connect.

The manufacture method of compressor rolling piston, it comprises the steps:

(1), cylindrical rolling piston 1 is processed by shape need;

(2) through hole 2 axially penetrating through piston adapted with slide plate head, is outputed at cylindrical piston;

(3), heat treatment rolling piston is to meeting piston hardness requirement;

(4), the inner surface accuracy of processing rolling piston outer surface 4, inner surface 3, upper and lower biend and through hole reaches requirement;

(5), processed passage 21 by rolling piston appearance towards through hole 2 and connect with through hole 21.

As stated above, so that it may produce qualified compressor rolling piston 1.

Above-mentioned passage 21 can use the method processing such as cutting, grinding, if processing rear surface does not meet required precision, then also needs to the means such as fine grinding so that it is surface meets the requirements.

When processing the inner surface footpath of rolling piston outer surface, inner surface and through hole, can first roughly grind, then refine, it is possible to fine grinding settles at one go.

Heat treatment rolling piston can be undertaken by existing method by according to rolling piston material, and it has become prior art, does not therefore elaborate at this.

Claims (2)

1. the manufacture method of compressor rolling piston, it is characterised in that: it comprises the steps:

(1), rolling piston is processed by shape need;

(2) in outer surface of piston, output the axially extending bore of the through piston adapted with slide plate head;

(3), heat treatment rolling piston is to meeting piston hardness requirement;

(4), processing rolling piston outer surface, inner surface, upper and lower biend and through hole inner surface, reach requirement to precision;

(5), passage is processed and through with through hole by rolling piston appearance towards through hole.

2. the manufacture method of compressor rolling piston as claimed in claim 1, it is characterised in that: described passage is splayed.