CN102717244A - Machining method of metal screw shaft - Google Patents
Machining method of metal screw shaft Download PDFInfo
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- CN102717244A CN102717244A CN2012100000464A CN201210000046A CN102717244A CN 102717244 A CN102717244 A CN 102717244A CN 2012100000464 A CN2012100000464 A CN 2012100000464A CN 201210000046 A CN201210000046 A CN 201210000046A CN 102717244 A CN102717244 A CN 102717244A
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- screw
- spiral
- machining
- machining method
- central shaft
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Abstract
The invention discloses a machining method of a metal screw shaft, and in particular relates to a machining method of the metal screw shaft for a screw-type delivery machine, wherein the machining method is realized through the following steps: (1) machining a screw blade by using a lathe according to the minimum screw distance; (2) drilling a central hole along the central line of the screw blade; (3) stretching the screw blade uniformly to the required screw spacing; and (4) penetrating the central shaft into the central hole, and welding the central shaft and the screw blade into a whole. According to the machining method, the screw blade is machined by only adopting a common screw machining method, and the machining procedure is simple; a rod material or a pipe material is selected according to the diameter of the central shaft; the length of the material is calculated according to the thickness of single layer of a screw and the number of layers as well as the machining clearances among screw layers, and materials are saved; the machining efficiency is high, and the cost is low; and the machining method of the metal screw shaft is especially suitable for machining ultra long screw shafts.
Description
Technical field
The present invention relates to the helical axis technical field, specifically relate to a kind of processing method that is used for the metal spiral axle of screw conveyer.
Background technology
The metal spiral axle is widely used in the mechanical equivalent of light feeding device, like conveying worm, mixing screw, extruser, automatic packaging machine Weighing system etc.The large-scale spiral axle can directly be welded with sheet metal, and small-sized helical axis particularly the processing of the higher helical axis of required precision is because spirals is big, the center diameter of axle is less, difficulty of processing is big, waste of material is more, cost of manufacture is higher.
Summary of the invention
The invention technical problem to be solved provides a kind of processing method of metal spiral axle, and this processing method efficient is high, and cost is low.
For solving the problems of the technologies described above, following technical scheme is adopted in the invention:
A kind of processing method of metal spiral axle specifically may further comprise the steps:
(1) processes the spiral leaf with lathe by minimum pitch;
(2) along the center line centering of spiral leaf;
(3) the spiral leaf is stretched to desired spirals equably;
(4) in centre bore, penetrate central shaft, and central shaft and spiral leaf are welded as a whole.
Further, described minimum pitch is meant the minimum spacing that process tool can stretch into.
Further, the aperture of described centre bore is greater than the spiral root diameter (RD).
Further, the diameter of described central shaft is less than the aperture of centre bore.
Further, described central shaft and spiral leaf should be along the spiral root weld.
The present invention utilizes the stretchable principle of metal; Employing meets the material of helical axis; Processing method by regular screw threads processes the spiral leaf, with the method for boring the spiral center is emptied, and the cored screw leaf is stretched to desired spirals; In the spiral centre bore, penetrate central shaft at last, and spiral and central shaft are welded as a whole.Compare with other processing methods, advantage of the present invention is following:
1) procedure is simple.Only need to process the spiral leaf by the processing method of regular screw threads.
2) save material.Can select bar or tubing according to the diameter of central shaft; Can add that the machining gap between spiral layers and the layer calculates the length of material according to the thickness and the number of plies of individual layer spiral.
3) especially be fit to the processing super long helical axis.
4) working (machining) efficiency is high, and cost is low.
Description of drawings
Fig. 1 is the structural representation of the spiral leaf of initial manufacture;
Fig. 2 is the spiral impeller structure sketch map behind the centering;
Fig. 3 is the structural representation of the spiral leaf after stretching;
Fig. 4 is the spiral impeller structure sketch map behind the welding central shaft.
The specific embodiment
Processing spiral leaf section is that rectangle, individual layer spiral leaf thickness are that 2.5mm, the spiral leaf number of plies are that 20 layers, spiral leaf diameter are that 50mm, spiral leaf length are that 1000mm, central shaft diameter are the helical axis of 20mm.Feed spacing through measuring lathe is 10mm, so the minimum diameter of bar is 50mm, and the minimum length of bar is (2.5+10) * 20=250mm.Procedure of processing is following:
1) as shown in Figure 1, on lathe, process the spiral leaf by the method for processing rectangular thread; Major diameter of thread is 50mm, and root directly is 20mm, and spiral shell transverse tooth thickness degree is 2.5mm, and pitch is 12.5mm; Wherein, pitch is that feed spacing 10mm adds spiral shell transverse tooth thickness degree sum.
2) as shown in Figure 2, after the spiral leaf completion of processing, directly helical centre punching in the lathe upper edge, the aperture is 20.5mm.
3) as shown in Figure 3, stretching spiral leaf evenly is stretched to 1000mm with the spiral leaf.
4) as shown in Figure 4, the welding central shaft is that 20mm, length are that Metallic rod more than the 1000mm penetrates spiral leaf centre bore with diameter, and along spiral blade root portion spiral leaf and central shaft is welded as a whole.
Because external diameter and centre bore can diminish behind the spiral leaf drawn, therefore to improve the machining accuracy of spiral leaf, must measure the tensile elongation of spiral leaf and the shrinkage rates of external diameter and centre bore in advance, when processing spiral leaf, suitably put chi then.Pressing the tensile elongation of present embodiment helical axis, is 10% through the shrinkage rates of testing its external diameter, and the shrinkage rates of centre bore is 2.5%.Therefore, the spiral external diameter can be processed by 55mm, and center bore must be greater than 20.5mm.
Claims (5)
1. the processing method of a metal spiral axle is characterized in that: specifically may further comprise the steps:
(1) processes the spiral leaf with lathe by minimum pitch;
(2) along the center line centering of spiral leaf;
(3) the spiral leaf is stretched to desired spirals equably;
(4) in centre bore, penetrate central shaft, and central shaft and spiral leaf are welded as a whole.
2. the processing method of metal spiral axle according to claim 1 is characterized in that: described minimum pitch is meant the minimum spacing that process tool can stretch into.
3. the processing method of metal spiral axle according to claim 1 is characterized in that: the aperture of described centre bore is greater than the spiral root diameter (RD).
4. according to the processing method of claim 1 or 3 described metal spiral axles, it is characterized in that: the diameter of described central shaft is less than the aperture of centre bore.
5. the processing method of metal spiral axle according to claim 1 is characterized in that: described central shaft and spiral leaf should be along the spiral root weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100000464A CN102717244A (en) | 2012-01-01 | 2012-01-01 | Machining method of metal screw shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100000464A CN102717244A (en) | 2012-01-01 | 2012-01-01 | Machining method of metal screw shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102717244A true CN102717244A (en) | 2012-10-10 |
Family
ID=46943185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100000464A Pending CN102717244A (en) | 2012-01-01 | 2012-01-01 | Machining method of metal screw shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102717244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314340A (en) * | 2014-08-01 | 2016-02-10 | 楚天科技股份有限公司 | Bottle transporting auger processing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3007281A1 (en) * | 1980-02-27 | 1981-09-03 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Welded conveyor auger on shaft - has auger spiral consisting of helically wound sheet metal strips axially stretched around shaft prior to final welding |
| JPS5751609A (en) * | 1980-09-12 | 1982-03-26 | Mitsubishi Motors Corp | Manufacture of screw for screw conveyor |
| CN2306970Y (en) * | 1997-09-12 | 1999-02-10 | 王汉祥 | Screw shaft for screw slag tap device |
| CN1535909A (en) * | 2003-04-10 | 2004-10-13 | 尹福康 | Manufacture process of integral helical blade for helical conveyer |
| CN201703837U (en) * | 2010-02-13 | 2011-01-12 | 李正峰 | Screw shaft for screw conveyor |
-
2012
- 2012-01-01 CN CN2012100000464A patent/CN102717244A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3007281A1 (en) * | 1980-02-27 | 1981-09-03 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Welded conveyor auger on shaft - has auger spiral consisting of helically wound sheet metal strips axially stretched around shaft prior to final welding |
| JPS5751609A (en) * | 1980-09-12 | 1982-03-26 | Mitsubishi Motors Corp | Manufacture of screw for screw conveyor |
| CN2306970Y (en) * | 1997-09-12 | 1999-02-10 | 王汉祥 | Screw shaft for screw slag tap device |
| CN1535909A (en) * | 2003-04-10 | 2004-10-13 | 尹福康 | Manufacture process of integral helical blade for helical conveyer |
| CN201703837U (en) * | 2010-02-13 | 2011-01-12 | 李正峰 | Screw shaft for screw conveyor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314340A (en) * | 2014-08-01 | 2016-02-10 | 楚天科技股份有限公司 | Bottle transporting auger processing method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |
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| WD01 | Invention patent application deemed withdrawn after publication |