Compressor sliding vane cylinder machining method

Abstract

The invention discloses a compressor slip sheet cylinder machining method which comprises the following steps: clamping a compressor slip sheet through a positioning tool clamp, adopting a numerical control surface grinding machine, arranging a forming diamond roller dresser for mounting and dressing a grinding wheel, and forming and grinding twice through the grinding wheel, so that two sections of arcs can be combined into a high-precision circle. By means of the machining method, it can be guaranteed that the dimensional tolerance of the compressor slip sheet obtained through machining can meet the design requirement, the machining quality of the compressor slip sheet is guaranteed, and rapid grinding machining of the compressor slip sheet is achieved.

Description

Technical Field

[0001] The invention relates to a compressor sliding vane cylinder processing method, belonging to the technical field of mechanical processing. Background Art

[0002] Our company has developed a new compressor vane. The compressor vane with cylindrical head shape is as follows Figure 1 As shown in the figure, the cylinder D is composed of a 240° incomplete circle and two transition arcs. The cylindricality requirements of the 240° incomplete circle are very high, with a diameter tolerance of ±0.01mm, a cylindricality requirement of 0.015mm, and a perpendicularity requirement of 0.01mm with respect to the AA' surface. For this compressor vane, what kind of processing method can be used to ensure that the two arcs can be combined into a high-precision circle has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The object of the present invention is to provide a method for machining a compressor vane cylinder, which can ensure that two arcs can be combined into a high-precision circle.

[0004] The technical solution of the present invention is a method for processing a compressor vane cylinder, which clamps the compressor vane through a positioning fixture, adopts a CNC surface grinder, and is equipped with a formed diamond roller dresser for installing and dressing a grinding wheel. Through two forming grinding processes of the grinding wheel, two arcs can be combined into a high-precision circle.

[0005] The above-mentioned compressor vane cylinder processing method includes the following steps: (1) Forming processing of the first surface of the cylindrical surface D: forming and grinding processing based on the front plane B, the right side surface C, and the upper and lower planes AA′; (2) Forming processing of the second surface of the cylindrical surface D: Forming and grinding processing is performed based on the rear plane B′, the right side surface C, and the upper and lower planes AA′.

[0006] In the aforementioned compressor vane cylinder processing method, before grinding, it is necessary to detect the geometric size accuracy and form and position tolerance accuracy between the six surfaces, namely, the upper and lower planes AA′, the front and rear planes BB′, the right side surface C, and the plane to be processed D.

[0007] The beneficial effects of the present invention are as follows: compared with the prior art, the method of the present invention adopts a CNC surface grinder, equipped with a formed diamond roller dresser for installing and dressing the grinding wheel, and performs two forming grinding processes. Through a special high-precision positioning fixture, two processing processes can realize that two arcs can be combined into a high-precision circle, ensuring that the dimensional tolerance of the compressor vane obtained by processing can meet the design requirements, ensuring the processing quality of the compressor vane, and realizing the rapid grinding of the compressor vane. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of the dimension tolerance of the compressor vane to be processed; Figure 2 This is a schematic diagram of the compressor vane before processing; Figure 3 It is a schematic diagram of the first surface of the cylindrical surface D on the compressor vane after forming; Figure 4 This is a schematic diagram of the second surface of the cylindrical surface D on the compressor vane after forming processing. DETAILED DESCRIPTION

[0009] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0010] Embodiment of the present invention: A method for machining a compressor vane cylinder, mainly for Figure 1 The processing of the compressor vane in the shape of a cylindrical head shown in the figure is to clamp the compressor vane through a special high-precision positioning fixture, and adopt a CNC surface grinder equipped with a formed diamond roller dresser for installing and dressing the grinding wheel. Through two forming grinding processes of the grinding wheel, a processing method in which two arcs can be combined into a high-precision circle can be achieved.

[0011] The following steps are included: (1) State before processing Figure 2 As shown, before grinding, the geometric size accuracy and form and position tolerance accuracy of the six surfaces, namely, the upper and lower planes AA′, the front and rear planes BB′, the right side surface C, and the plane to be processed D, need to be tested.

[0012] (2) Forming of the first surface of the cylindrical surface D: Figure 3 As shown, the front plane B, the right side surface C, and the upper and lower planes AA′ are used as references for the profile grinding process; (3) Forming of the second surface of the cylindrical surface D: Figure 4 As shown, the rear plane B′, the right side surface C, and the upper and lower planes AA′ are used as references for the shaping and grinding process.

[0013] The compressor vanes processed by us using the above processing method have been tested and their dimensional tolerances can meet the design requirements, ensuring the processing quality of the compressor vanes. The forming process of the cylindrical surface D can be completed after two grindings, realizing the rapid grinding and forming of the compressor vanes.

Claims

1. A method for processing a compressor vane cylinder, characterized in that: The compressor vane is clamped by a positioning fixture, and a CNC surface grinder is used. A profiled diamond roller dresser is used to install and dress the grinding wheel. Through two profile grinding processes of the grinding wheel, two arcs can be combined into a high-precision circle.

2. A compressor vane cylinder machining method according to claim 1, characterized in that: The following steps are included: (1) Forming processing of the first surface of the cylindrical surface D: forming and grinding processing based on the front plane B, the right side surface C, and the upper and lower planes AA′; (2) Forming processing of the second surface of the cylindrical surface D: Forming and grinding processing is performed based on the rear plane B′, the right side surface C, and the upper and lower planes AA′.

3. A compressor vane cylinder machining method according to claim 1, characterized in that: Before grinding, it is necessary to inspect the geometric dimension accuracy and form and position tolerance accuracy of the six surfaces: the upper and lower planes AA′, the front and rear planes BB′, the right side surface C, and the plane to be processed D.

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