CN2558792Y - Full-free contact line single-screw compressor meshing pair - Google Patents
Full-free contact line single-screw compressor meshing pair Download PDFInfo
- Publication number
- CN2558792Y CN2558792Y CN 02228920 CN02228920U CN2558792Y CN 2558792 Y CN2558792 Y CN 2558792Y CN 02228920 CN02228920 CN 02228920 CN 02228920 U CN02228920 U CN 02228920U CN 2558792 Y CN2558792 Y CN 2558792Y
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- screw
- screw compressor
- star
- envelope
- working surface
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Abstract
The utility model provides an engagement pair for single screw compressor. The bottom face of the screw channel of the screw takes a torus or a combination of torus and sphere as main face, which envelopes and generates a conjugate surface according to matching motion regulated by single screw compressor; left surface and right surface of the screw channel take or cylinder truncated cone as main face, which envelopes and generates a conjugate surface according to matching motion regulated by single screw compressor. The position of the contact line of screw working face and star wheel working face on the star wheel working face is free.
Description
Affiliated technical field
The utility model relates to single helical-lobe compressor intermeshing pair, especially the shape of screw rod and processing method.
Background technique
Star-wheel, screw engages pair are the critical components of single screw compressor, and as shown in Figure 1,1 is that screw rod, 2 is star-wheel.The working surface of present known star-wheel as shown in Figure 2,1 be the star-wheel left surface, 2 for star-wheel Topland, 3 for the star-wheel right flank; Present known screw rod working surface as shown in Figure 3,1 be the screw channel left surface, 2 for screw channel bottom surface, 3 for the screw channel right flank.Star-wheel left surface, Topland and right flank are meshed with screw channel left surface, bottom surface and right flank respectively.At present, the screw rod working surface of known single screw compressor is divided into two classes: (one) screw channel left surface and right flank are to be bus with the straight line, press the conjugate surface of the routing motion envelope generation of single screw compressor regulation, the screw channel bottom surface is to be bus with the circular arc line, presses the conjugate surface that the routing motion envelope of single screw compressor regulation generates; (2) screw channel left surface and right flank are to be generatrix with cylinder or round platform, press conjugate surface (the conjugate surface abbreviation cylindrical envelope face that following cylndrical surface envelope generates of the routing motion envelope generation of single screw compressor regulation, the conjugate surface that the round table surface envelope generates is called for short the round platform envelope surface), the screw channel bottom surface is identical with (one) class.No matter be (one) class or (two) class screw rod working surface, its screw channel bottom surface all is to be bus with the circular arc line, presses the conjugate surface that the routing motion envelope of single screw compressor regulation generates.The position of the Line of contact of screw channel bottom surface and star-wheel Topland on the star-wheel working surface is changeless circular arc line, thereby wearing and tearing easily; According to envelope principle, the screw channel bottom surface can't process with rotating tool.
Summary of the invention
In order to overcome the deficiency of existing single screw compressor screw rod working surface, the utility model is designed to the screw channel bottom surface with anchor ring or is generatrix with the composite surface of anchor ring and sphere, press the conjugate surface (conjugate surface that following spherical envelope generates is called for short the ball envelope surface, and the conjugate surface of ring surface enveloped generation is called for short the ring envelope surface) of the routing motion envelope generation of single screw compressor regulation; Screw channel left surface and right flank are cylindrical envelope face or round platform envelope surface.The utility model screw rod working surface such as Fig. 4 or shown in Figure 6,1 and 4 is cylinder or round platform envelope surface, and 2 is the ball envelope surface, and 3 are the ring envelope surface.The utility model star-wheel working surface such as Fig. 5 or shown in Figure 7, Fig. 5 and Fig. 4 pairing, Fig. 7 and Fig. 6 pairing; The position of 1,2,3 and 4 indications on the star-wheel working surface is meshed with the position of 1,2,3 and 4 indications on the screw rod working surface respectively.Dissociate in the position of Line of contact on the star-wheel working surface of screw rod working surface and star-wheel working surface like this, and only need one rotating tool processed.
The beneficial effects of the utility model are: star-wheel left surface, Topland and right flank all dissociate with the position of Line of contact on the star-wheel working surface of screw channel left surface, bottom surface and right flank respectively, the abrading section is disperseed more, reduced the wear extent in the unit area; And the screw rod working surface only needs one rotating tool processed.
Description of drawings
Fig. 1 is a single helical-lobe compressor intermeshing pair of the present utility model, i.e. screw rod and star-wheel.
Fig. 2 is present known star-wheel working surface schematic representation.
Fig. 3 is present known screw rod working surface schematic representation.
Fig. 4 and Fig. 6 are screw rod working surface schematic representation of the present utility model.
Fig. 5 and Fig. 7 are star-wheel working surface schematic representation of the present utility model.
Fig. 8, Fig. 9 and Figure 10 are screw rod working surface working drawings of the present utility model.
Embodiment
The machining tool that the utility model adopted is a cylinder (or circular cone) shape bulb mould end mill, process step is as follows: the relative position of (one) screw blank and cutter as shown in Figure 8,1 is screw rod, and 2 is cutter, and the routing motion of stipulating by single screw compressor carries out envelope; (2) relative position of screw blank and cutter as shown in Figure 9,1 is screw rod, 2 is cutter, carries out envelope by the routing motion of single screw compressor regulation; (3) relative position of screw blank and cutter as shown in figure 10,1 is screw rod, 2 is cutter, routing motion by the single screw compressor regulation carries out envelope, and at this moment, the position of cutter is between the centre of Fig. 8 and position shown in Figure 9, in order to guarantee the machining accuracy of screw rod working surface, can whenever move once along the position that the ring envelope surface moves cutter between Fig. 8 and tool position shown in Figure 9, then the routing motion by the single screw compressor regulation carries out first enveloped.The number of times that moves is many more, and then machining accuracy is high more.Process step (one), (two), (threes') order can be put upside down.
Claims (2)
1, a kind of single helical-lobe compressor intermeshing pair is characterized in that: the screw channel left and right side on the screw rod is to be generatrix with cylinder or round platform, presses the conjugate surface that the routing motion envelope of single screw compressor regulation generates; The screw channel bottom surface is to be generatrix with anchor ring or with the composite surface of anchor ring and sphere, presses the conjugate surface that the routing motion envelope of single screw compressor regulation generates.
2, single helical-lobe compressor intermeshing pair according to claim 1 is characterized in that: dissociate all the time in the position of Line of contact on the star-wheel working surface between star-wheel working surface and the screw rod working surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228920 CN2558792Y (en) | 2002-04-04 | 2002-04-04 | Full-free contact line single-screw compressor meshing pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228920 CN2558792Y (en) | 2002-04-04 | 2002-04-04 | Full-free contact line single-screw compressor meshing pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2558792Y true CN2558792Y (en) | 2003-07-02 |
Family
ID=33705356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02228920 Expired - Fee Related CN2558792Y (en) | 2002-04-04 | 2002-04-04 | Full-free contact line single-screw compressor meshing pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2558792Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680449B (en) * | 2007-05-14 | 2011-08-17 | 大金工业株式会社 | Single screw compressor |
| CN101779041B (en) * | 2007-08-07 | 2011-08-31 | 大金工业株式会社 | Single-screw compressor |
| CN101779040B (en) * | 2007-08-07 | 2012-05-23 | 大金工业株式会社 | Single-screw compressor, and screw rotor machining method |
-
2002
- 2002-04-04 CN CN 02228920 patent/CN2558792Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680449B (en) * | 2007-05-14 | 2011-08-17 | 大金工业株式会社 | Single screw compressor |
| CN101779041B (en) * | 2007-08-07 | 2011-08-31 | 大金工业株式会社 | Single-screw compressor |
| CN101779040B (en) * | 2007-08-07 | 2012-05-23 | 大金工业株式会社 | Single-screw compressor, and screw rotor machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Chang Yongzhong Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |