CN1164448A - Method for making variable-pitch screw blade wheel - Google Patents
Method for making variable-pitch screw blade wheel Download PDFInfo
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- CN1164448A CN1164448A CN 96104836 CN96104836A CN1164448A CN 1164448 A CN1164448 A CN 1164448A CN 96104836 CN96104836 CN 96104836 CN 96104836 A CN96104836 A CN 96104836A CN 1164448 A CN1164448 A CN 1164448A
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- blade
- pitch screw
- variable
- blade wheel
- screw blade
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Abstract
The present invention relates to a method for making varying-pitch helical blade wheel. It is characterized by that the sheet metal is die-cut into cross-section shape of the varying-pitch helical blade wheel, named blade unit, then according to the locus equation of blade edge shape, the twisted angle of each blade unit is calculated, and then an inner spline is punched in centre of each balde unit, and the inner spline and outer profile are twisted to this angle, then those blade units are mounted on the spline shaft in order, and locked, so that an integrated varying-pitch helical blade wheel can be formed.
Description
The present invention relates to a kind of manufacture method of variable-pitch screw blade wheel, especially for the manufacture method of the variable-pitch screw blade wheel of liquid air-dissolving apparatus.
Chinese patent application 95105936.X has described a kind of liquid air-dissolving apparatus, and critical piece wherein is a variable-pitch screw blade wheel.The equation of locus that this application has been described its blade edge shape is:
In the formula:
A---impeller radius;
M---variable-pitch propeller coefficient, 0＜m＜1
B---
Wherein: L is an impeller length;
According to the impeller that this application is described, its shape can describe to be that the mode that a flat board increases by pitch gradually around central shaft is twisted 360 °.Because its pitch changes, thereby general turning processing can't make, and needs to adopt expensive equipment such as machining center processing, or adopts casting or die forging method to process.But the employing Cutter Body Processing with Machining Center, complex process, the process-cycle is long, and waste of raw materials is big, and wants the clamping apparatus of design specialized, and processing cost is very high.And casting or die forging have the difficulty of processing mold equally, still to process by machining center, and casting or die forging product processed need carry out dynamic balance running and revise after could use.
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part, provide cheaply a kind of, the easy machining manufacture that is suitable for the variable-pitch screw blade wheel of realization of technology.Need not carry out dynamic balance running with the variable-pitch screw blade wheel of this method processing can use.
The objective of the invention is to realize by following proposal, go out the shape of cross section of variable-pitch screw blade wheel with the foil stamping-out, be referred to as blade unit, calculate the windup-degree of each blade unit then according to the equation of locus of above-mentioned blade edge shape, these blade units are stacked up by the windup-degree that calculates and lock, promptly constituted whole variable-pitch screw blade wheel.
The present invention compared with prior art has following advantage: can enhance productivity surplus in the of ten and times also can save a large amount of raw material; Use conventional equipment, and processing technology is simple, manufacturing just can be accepted by little factory; Owing to fold mutually between blade unit, make blade surface form the multi-step shape in addition, increased liquid gas contact area, improved molten gas effect.
Describe one embodiment of the present of invention with reference to the accompanying drawings in detail.
Accompanying drawing 1 is the schematic diagram of a blade unit of variable-pitch screw blade wheel of the present invention.
Accompanying drawing 2 is stacked variable-pitch screw blade wheel schematic diagrames made from method of the present invention.
Referring to Fig. 1, the outline of blade unit promptly is that its heart portion is an internal spline according to the design of the shape of cross section of variable-pitch screw blade wheel, and its thickness is 0.2～0.8mm, and wherein 0.5mm is an optimum thickness.Because of variable-pitch screw blade wheel is the uiform section body, so the outline of each blade unit is consistent.According to the equation of locus of blade edge shape, the windup-degree of each blade unit is different, can show as the internal spline of each blade unit and the windup-degree of its outline and have nothing in common with each other.If the windup-degree of the internal spline of first blade unit and its outline is 0, lamination thickness
The substitution equation of locus can calculate second windup-degree
, the rest may be inferred, can calculate the internal spline of all blade units thereafter and the windup-degree of its outline
The manufacturing process of blade unit is that earlier unified stamping-out goes out appearance profile, then according to each sheet
, reverse this angle, go out internal spline.
When going out all blade units one by one, in order with its being through on the splined shaft one by one, two ends nut check just can obtain complete variable-pitch screw blade wheel as shown in Figure 2 again.
The invention is not restricted to the foregoing description, can spirit according to the present invention do to be applied on other product after the different variations.
Claims (3)
1, a kind of manufacture method of variable-pitch screw blade wheel, it is characterized in that going out the shape of cross section of variable-pitch screw blade wheel with the foil stamping-out, be referred to as blade unit, calculate the windup-degree of each blade unit then according to the equation of locus of blade edge shape, these blade units are stacked up by the windup-degree that calculates and lock, promptly constituted whole variable-pitch screw blade wheel.
2, according to the manufacture method of the variable-pitch screw blade wheel of claim 1, it is characterized in that the stack of described blade unit is that internal spline is gone out at each blade unit center, is through then on the splined shaft.
3, according to the manufacture method of the variable-pitch screw blade wheel of claim 1 and 2, it is characterized in that the windup-degree of described each blade unit is to realize by the angle of reversing between internal spline and outline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96104836 CN1164448A (en) | 1996-05-07 | 1996-05-07 | Method for making variable-pitch screw blade wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96104836 CN1164448A (en) | 1996-05-07 | 1996-05-07 | Method for making variable-pitch screw blade wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1164448A true CN1164448A (en) | 1997-11-12 |
Family
ID=5118576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96104836 Pending CN1164448A (en) | 1996-05-07 | 1996-05-07 | Method for making variable-pitch screw blade wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164448A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399200A (en) * | 2015-12-15 | 2016-03-16 | 东南大学 | Molecule-refining oxygen-dissolution aeration device |
| CN108080604A (en) * | 2017-12-27 | 2018-05-29 | 大连船用推进器有限公司 | Propeller casting forming solidification sequence control device and its rate-determining steps |
| CN108793348A (en) * | 2018-08-06 | 2018-11-13 | 宜兴博登泰科工业装备有限公司 | A kind of ozone static state variable-pitch propeller nanometer cutting magnetizing assembly |
| CN116231949A (en) * | 2023-05-09 | 2023-06-06 | 长江三峡集团实业发展(北京)有限公司 | Electric push rod device |
-
1996
- 1996-05-07 CN CN 96104836 patent/CN1164448A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399200A (en) * | 2015-12-15 | 2016-03-16 | 东南大学 | Molecule-refining oxygen-dissolution aeration device |
| CN108080604A (en) * | 2017-12-27 | 2018-05-29 | 大连船用推进器有限公司 | Propeller casting forming solidification sequence control device and its rate-determining steps |
| CN108080604B (en) * | 2017-12-27 | 2019-09-13 | 大连船用推进器有限公司 | Propeller casting forming solidification sequence control device and its rate-determining steps |
| CN108793348A (en) * | 2018-08-06 | 2018-11-13 | 宜兴博登泰科工业装备有限公司 | A kind of ozone static state variable-pitch propeller nanometer cutting magnetizing assembly |
| CN116231949A (en) * | 2023-05-09 | 2023-06-06 | 长江三峡集团实业发展(北京)有限公司 | Electric push rod device |
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