Making process of gear box casing for centrifugal compressor

A technology for centrifugal compressors and gear boxes, which is applied in the manufacture of tools, components with teeth, transmission boxes, etc. It can solve problems such as clamping, high number of circulations, poor machining accuracy of split surfaces, and extended auxiliary time. Achieve high production efficiency, reduce processing costs, and improve roughness

Inactive Publication Date: 2007-03-21
WUXI COMPRESSOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems are: 1. Processing on two different machine tools, the number of times of clamping and circulation is large, and the processing process is long
2. Repeated clamping belt alignment and other processing auxiliary time prolongs
3. Poor machining accuracy of split surface
4. Medium and small CNC machine tools have limitations in processing large-size parts
5. It is necessary to have a large horizontal CNC machine tool to process the large size TM centrifugal compressor gearbox shell

Method used

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  • Making process of gear box casing for centrifugal compressor
  • Making process of gear box casing for centrifugal compressor
  • Making process of gear box casing for centrifugal compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The gearbox casing of the centrifugal compressor of the present invention is mainly formed by connecting the upper and lower gearbox casings with bolts. The outer dimensions of the upper and lower gearbox shells are 1687mm×1862mm×1518mm, and the processing equipment adopts the gantry-type five-face CNC machine tool for processing.

[0046] 1. The manufacturing process of the lower gear case is as follows:

[0047] (1) Blank forming: The material of the lower gear box is cast with QT400-18 ductile iron; perform the following mechanical processing according to the drawing requirements;

[0048] (2) Marking: marking the bottom surface, bearing hole processing line;

[0049] (3), planing: leave a margin of 2mm on the bottom surface of the planing;

[0050] (4) Using gantry-type five-face CNC machine tools for cutting: semi-finishing and finishing milling of the bottom surface, drilling;

[0051] The rough milling cutter with a diameter of 200mm is used for semi-finish mi...

Embodiment 2

[0081] The gearbox casing of the centrifugal compressor of the present invention is mainly formed by connecting the upper and lower gearbox casings with bolts. The outer dimensions of the upper and lower gearbox shells are: 1687mm×1862mm×1518mm, and the processing equipment adopts the gantry type five-sided CNC machine tool for processing.

[0082] 1. The manufacturing process of the lower gear case is as follows:

[0083] (1) Blank forming: The material of the lower gear box is cast with ductile iron with the brand name QT-40018; the following machining is carried out according to the requirements of the drawings;

[0084] (2) Marking: marking the bottom surface, bearing hole processing line;

[0085] (3), planing: the remaining allowance on the bottom surface of planing is: 2mm;

[0086] (4) Using gantry-type five-face CNC machine tools for cutting: semi-finishing and finishing milling of the bottom surface, drilling;

[0087] The rough milling cutter with a diameter of 2...

Embodiment 3

[0113] The gearbox casing of the centrifugal compressor of the present invention is mainly formed by connecting the upper and lower gearbox casings with bolts. The outer dimensions of the upper and lower gearbox shells are: 1654mm×1462mm×1455mm, and the processing equipment adopts the gantry-type five-face CNC machine tool for processing.

[0114] 1. The manufacturing process of the lower gear case is as follows:

[0115] (1) Blank forming: the material of the lower gear box is cast with QT400-18 nodular cast iron; the following mechanical processing is carried out according to the drawing requirements;

[0116] (2) Marking: marking the bottom surface, bearing hole processing line;

[0117] (3), planing: the remaining allowance on the bottom surface of planing is: 2mm;

[0118] (4) Cutting with Longmen five-sided machining center: semi-finishing and fine milling bottom surface, drilling;

[0119] For semi-finish milling, a rough milling cutter with a diameter of 200mm is us...

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Abstract

The present invention is machining process of gear box casing for TM type centrifugal compressor, and belongs to the field of metal machining technology. The gear box casing consists of one upper casing and one lower casing mainly. The lower casing is machined through fine milling the bottom, drilling hole, machining the combining surfaces, sides and holes, washing, oiling and other steps; the upper casing is machined through fine milling the combining surfaces, drilling holes, fine boring the bearing holes, cleaning, oiling and other steps. The present invention has simple machining process, low production cost, high machining precision and other advantages.

Description

technical field [0001] The invention relates to a manufacturing process of a centrifugal compressor gear box shell, in particular to a machining process for a TM type centrifugal compressor gear box shell, which belongs to the technical field of metal processing. Background technique [0002] In the gas compressor industry, the centrifugal compressor is a high-tech product with high technical difficulty and manufacturing difficulty and the most promising development prospect. For the TM type centrifugal compressor, due to the high-speed rotation of the impeller, the strong interaction between the blade and the airflow makes the airflow generate pressure energy and kinetic energy, and the gas converts the kinetic energy into pressure energy in the diffuser to complete the gas flow. compression. TM type centrifugal compressor gearbox shell has a unique horizontal split structure, the split plane is parallel to the main shaft axis, which makes the unit easy to assemble and mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P13/00B23Q15/007F16H57/02
Inventor 顾佩华刘智渭徐富明
Owner WUXI COMPRESSOR CO LTD
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