GB1483972A - Rotary fluid machines comprising meshing screw rotors - Google Patents
Rotary fluid machines comprising meshing screw rotorsInfo
- Publication number
- GB1483972A GB1483972A GB1201375A GB1201375A GB1483972A GB 1483972 A GB1483972 A GB 1483972A GB 1201375 A GB1201375 A GB 1201375A GB 1201375 A GB1201375 A GB 1201375A GB 1483972 A GB1483972 A GB 1483972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- profile
- point
- circle
- rotor
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/082—Details specially related to intermeshing engagement type machines or engines
- F01C1/084—Toothed wheels
Abstract
1483972 Rotary positive-displacement fluidmachines SVENSKA ROTOR MASKINER A B 21 March 1975 [21 April 1974 23 April 1974] 12013/75 Heading F1F [Also in Division B3] In a meshing-screw machine the profile of each helical lobe, or "rib", of the male rotor RR is asymmetric and comprises a portion represented by a heavy line intersecting the pitch circle TK at a point P whereat a normal N is at an angle α to a line S, which is at right-angles to a radial line V, the angle α being greater than five degrees. The same condition obtains at any other point on the same flank of the rib. This is said to facilitate formation of the ribs by hobbing. A known profile represented by a thin line passes through a point P . A portion A of the profile is an arc of a circle with its centre at MR. The specification describes a method of making the male rotor in which the circle of contact of a hobbing tool is displaced relative to the pitch circle of the rotor being machined in a manner to provide 'profile shift'.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2413708A DE2413708A1 (en) | 1974-03-21 | 1974-03-21 | Rotary piston engine with meshing asymmetrical helical gears - normal to tooth contour includes more than 5 degrees with normal to radius |
| DE2419551A DE2419551A1 (en) | 1974-04-23 | 1974-04-23 | Rotary engine with two meshing helical gear rotors - causing uniform wear of cutting edges of bobbing cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1483972A true GB1483972A (en) | 1977-08-24 |
Family
ID=25766841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1201375A Expired GB1483972A (en) | 1974-03-21 | 1975-03-21 | Rotary fluid machines comprising meshing screw rotors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1483972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390248A (en) * | 2020-03-18 | 2020-07-10 | 广州兴森快捷电路科技有限公司 | Processing method and device for circuit board convex angle, computer equipment and storage medium |
-
1975
- 1975-03-21 GB GB1201375A patent/GB1483972A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390248A (en) * | 2020-03-18 | 2020-07-10 | 广州兴森快捷电路科技有限公司 | Processing method and device for circuit board convex angle, computer equipment and storage medium |
| CN111390248B (en) * | 2020-03-18 | 2021-12-10 | 广州兴森快捷电路科技有限公司 | Processing method and device for circuit board convex angle, computer equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |