CN105619009A - Machining method for air barrel inner hole of centrifugal compressor - Google Patents
Machining method for air barrel inner hole of centrifugal compressor Download PDFInfo
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- CN105619009A CN105619009A CN201410592650.XA CN201410592650A CN105619009A CN 105619009 A CN105619009 A CN 105619009A CN 201410592650 A CN201410592650 A CN 201410592650A CN 105619009 A CN105619009 A CN 105619009A
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Abstract
The invention relates to the field of centrifugal compressors, in particular to a machining method for an air barrel inner hole of a centrifugal compressor. The machining method is used for machining the air barrel inner hole with a round cross section and an oval cross section on the two sides. The machining method includes the following steps that (1) the minimum rotation cross section is determined, wherein the minimum rotation cross section is located in the center position of the oval cross section, and the diameter of the minimum rotation cross section is the distance between two parallel straight line edges of the oval cross section; (2) a taper zone is formed by the minimum rotation cross section and the round cross section, the taper zone, formed by the minimum rotation cross section and the round cross section, on a to-be-machined workpiece is removed, and taper hole data are passed back to a control computer; (3) UG NX4 software is used for determining the remaining allowance, wherein a taper hole formed by the minimum rotation cross section and the round cross section is adopted for manufacturing a blank body, and a three-dimensional stretching body formed by the round cross section and the oval cross section is selected for finish machining of a part model; and (4) the irregular allowance is removed through a numerically-controlled machine tool in a layered milling manner. By means of the machining method, the machining efficiency is greatly improved.
Description
Technical field
The present invention relates to centrifugal compressor field, specifically the air duct method for machining bore of a kind of centrifugal compressor.
Background technology
BCL barrel-type compressor belongs to high pressure centrifugal compressor, air duct flange is the element of BCL barrel-type compressor, owing to aerodynamic and hydrodynamics need, the inner hole section of air duct flange is irregular change, as shown in Fig. 1��2, air duct flange is provided with endoporus, as shown in Figure 3, the inner hole section of described air duct flange is being circular cross-section near flange side, it is being elliptic cross-section away from flange side, the endoporus of described air duct flange can be considered and formed in space three-dimensional stretching by the two cross section, hole wall is smooth to the inside recessed makes inner hole section area be continually changing, this makes air duct flange processing and manufacturing difficulty big, if taking conventional casting methods, the user demand of high pressure and high intensity cannot be met again.
Summary of the invention
It is an object of the invention to provide the air duct method for machining bore of a kind of centrifugal compressor, by dividing different working positions, air duct flange endoporus is processed, drastically increases working (machining) efficiency.
It is an object of the invention to be achieved through the following technical solutions:
The air duct method for machining bore of a kind of centrifugal compressor, for processing the air duct endoporus of two lateral sections respectively circular cross-section and elliptic cross-section, comprises the following steps:
(1) determining minimum revolution section, described minimum revolution section is positioned at the centre of elliptic cross-section and the distance between diameter is described elliptic cross-section the two of described minimum revolution section parallel lines limits;
(2) described minimum revolution section and circular cross-section form a conical region, removed the conical region formed by minimum revolution section and circular cross-section on workpiece to be processed by Digit Control Machine Tool, and will process in the taper hole data back extremely control computer that described conical region is formed;
(3) using UGNX4 software to determine residue surplus, wherein the making of blank body adopts the three-dimensional extrusion that the taper hole that minimum revolution section and circular cross-section are constituted, precision-machined parts Model Selection circular cross-section and elliptic cross-section are formed;
(4) residue surplus is removed by Digit Control Machine Tool.
Described step (two) removes the conical region formed by minimum revolution section and circular cross-section by turnery processing mode.
In described step (four), employing layered milling mode successively removes residue surplus along the axial direction of air duct flange.
The each cutting-in 1mm of described layered milling.
Described step (four) adds the mode taking three axle millings man-hour the high feed milling cutter adopting carbide inserts blade.
Advantages of the present invention and good effect be:
1, air duct flange endoporus is divided into conical region and irregular area two parts by the present invention, and is processed respectively, drastically increases working (machining) efficiency.
2, the present invention improves surface quality and the precision of hole machined in air duct flange, thus improve centrifugal compressor compressor bank efficiency.
Accompanying drawing explanation
Fig. 1 is the sectional view of air duct flange,
Fig. 2 is the A-A sectional view of Fig. 1 apoplexy drum flange,
Fig. 3 is the internal via shape schematic diagram of Fig. 1 apoplexy drum flange,
Fig. 4 is the schematic diagram one determining minimum revolution section,
Fig. 5 is the schematic diagram two determining minimum revolution section,
The conical region schematic diagram that Fig. 6 is minimum revolution section and circular cross-section is formed.
Wherein, 1 is endoporus, and 2 is circular cross-section, and 3 is elliptic cross-section, and 4 is minimum revolution section.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 3, endoporus 1 cross section of air duct flange is circular cross-section 2 in flange side, is elliptic cross-section 3 in the cross section away from flange side, and the cross section of whole endoporus 1 is continually changing.
The present invention processes the procedure of air duct endoporus and is divided into: determines minimum revolution section 4, process taper hole, utilize UGNX4 software to determine residue surplus, removed residue surplus by Digit Control Machine Tool, particularly as follows:
(1) minimum revolution section 4 is determined.
As shown in Figures 4 and 5, described minimum revolution section 4 is positioned at the centre of elliptic cross-section 3, the method determining described minimum revolution section 4 is: according to drawing and calculated two the parallel lines limits finding described elliptic cross-section 3 by allowance, diameter L using the distance between two straight lines as minimum revolution section 4, so that it is determined that minimum revolution section 4.
(2) processing taper hole.
As shown in Figure 6, described minimum revolution section 4 and circular cross-section 2 form a conical region, the conical region formed on workpiece to be processed is removed by minimum revolution section 4 and circular cross-section 2 by Digit Control Machine Tool turnery processing, the taper hole data formed to passback turning conical region in control computer when turnery processing use for UGNX4 software, and this is techniques well known.
(3) UGNX4 software is utilized to determine residue surplus
When using UGNX4 software to determine residue surplus, it is necessary to carrying out blank system and make and precision-machined parts Model Selection, this is techniques well known. In the present invention, the making of blank body adopts the taper hole that minimum revolution section 4 and circular cross-section 2 are constituted, and precision-machined parts model is circular cross-section 2 and the three-dimensional extrusion of elliptic cross-section 3 formation.
(4) residue surplus is removed by Digit Control Machine Tool.
The residue headroom data determined by UGNX4 software imports in Digit Control Machine Tool and completes last processing. The present invention adopts the mode of layered milling to process residue surplus, the endoporus 1 completing air duct flange is processed, add the mode taking three axle millings man-hour and adopt the high feed milling cutter of carbide inserts blade of Sweden's SECO brand, surplus is remained along axially successively removing of air duct flange, each cutting-in 1mm, ensureing that machining accuracy improves again working (machining) efficiency simultaneously, the endoporus 1 being finally completed air duct flange is processed. In the present embodiment, described high feed milling cutter diameter is �� 50mm, it is possible to reach linear velocity 140m/min, feeding F=1200mm/min.
Claims (5)
1. an air duct method for machining bore for centrifugal compressor, for processing the air duct endoporus of two lateral sections respectively circular cross-section and elliptic cross-section, it is characterised in that: comprise the following steps:
(1) minimum revolution section (4) is determined, described minimum revolution section (4) is positioned at the centre of elliptic cross-section (3) and the distance between two parallel lines limits that the diameter of described minimum revolution section (4) is described elliptic cross-section (3);
(2) described minimum revolution section (4) and circular cross-section (2) form a conical region, removed the conical region formed by minimum revolution section (4) and circular cross-section (2) on workpiece to be processed by Digit Control Machine Tool, and will process in the taper hole data back extremely control computer that described conical region is formed;
(3) UGNX4 software is used to determine residue surplus, wherein the making of blank body adopts the taper hole that minimum revolution section (4) and circular cross-section (2) are constituted, the three-dimensional extrusion that precision-machined parts Model Selection circular cross-section (2) and elliptic cross-section (3) are formed;
(4) residue surplus is removed by Digit Control Machine Tool.
2. the air duct method for machining bore of centrifugal compressor according to claim 1, it is characterised in that: described step (two) removes the conical region formed by minimum revolution section (4) and circular cross-section (2) by turnery processing mode.
3. the air duct method for machining bore of centrifugal compressor according to claim 1, it is characterised in that: in described step (four), employing layered milling mode successively removes residue surplus along the axial direction of air duct flange.
4. the air duct method for machining bore of centrifugal compressor according to claim 3, it is characterised in that: each cutting-in 1mm of described layered milling.
5. the air duct method for machining bore of the centrifugal compressor according to claim 1 or 3, it is characterised in that: described step (four) adds the mode taking three axle millings man-hour the high feed milling cutter adopting carbide inserts blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592650.XA CN105619009B (en) | 2014-10-29 | 2014-10-29 | The air duct method for machining bore of centrifugal compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592650.XA CN105619009B (en) | 2014-10-29 | 2014-10-29 | The air duct method for machining bore of centrifugal compressor |
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| CN105619009A true CN105619009A (en) | 2016-06-01 |
| CN105619009B CN105619009B (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994535A (en) * | 2018-07-26 | 2018-12-14 | 沈阳透平机械股份有限公司 | A kind of processing method of the trapezoidal annular groove of centrifugal compressor air duct flange |
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| US20080069656A1 (en) * | 2005-03-31 | 2008-03-20 | Vladimir Volokh | Method of orbital milling with an orbital end mill, an orbital end mill, and a cutting bit for an orbital end mill |
| CN101434021A (en) * | 2007-11-12 | 2009-05-20 | 包明涛 | Method for processing locknut of conical rotor motor |
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| CN102717228A (en) * | 2011-08-03 | 2012-10-10 | 程乃士 | Metal strip steel loop set forming method and device |
| CN103495835A (en) * | 2013-06-14 | 2014-01-08 | 哈尔滨汽轮机厂有限责任公司 | Method for machining combustion pressure taper cylinder |
| CN103659171A (en) * | 2012-09-24 | 2014-03-26 | 上海宝钢工业技术服务有限公司 | Manufacturing method of UOE (uing-oing-expanding) straight seam steel pipe expanded taper |
| CN104028816A (en) * | 2014-06-13 | 2014-09-10 | 湖北三环锻造有限公司 | Machining technology for inner end surfaces of lugs of automobile steering knuckle |
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2014
- 2014-10-29 CN CN201410592650.XA patent/CN105619009B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080069656A1 (en) * | 2005-03-31 | 2008-03-20 | Vladimir Volokh | Method of orbital milling with an orbital end mill, an orbital end mill, and a cutting bit for an orbital end mill |
| CN101434021A (en) * | 2007-11-12 | 2009-05-20 | 包明涛 | Method for processing locknut of conical rotor motor |
| CN102091919A (en) * | 2009-12-09 | 2011-06-15 | 沈阳鼓风机集团有限公司 | Machining method of three-dimensional closed impeller |
| CN102717228A (en) * | 2011-08-03 | 2012-10-10 | 程乃士 | Metal strip steel loop set forming method and device |
| CN103659171A (en) * | 2012-09-24 | 2014-03-26 | 上海宝钢工业技术服务有限公司 | Manufacturing method of UOE (uing-oing-expanding) straight seam steel pipe expanded taper |
| CN103495835A (en) * | 2013-06-14 | 2014-01-08 | 哈尔滨汽轮机厂有限责任公司 | Method for machining combustion pressure taper cylinder |
| CN104028816A (en) * | 2014-06-13 | 2014-09-10 | 湖北三环锻造有限公司 | Machining technology for inner end surfaces of lugs of automobile steering knuckle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994535A (en) * | 2018-07-26 | 2018-12-14 | 沈阳透平机械股份有限公司 | A kind of processing method of the trapezoidal annular groove of centrifugal compressor air duct flange |
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| CN105619009B (en) | 2017-12-15 |
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