CN205702501U - Valve seam turning cutting tool - Google Patents
Valve seam turning cutting tool Download PDFInfo
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- CN205702501U CN205702501U CN201620204954.9U CN201620204954U CN205702501U CN 205702501 U CN205702501 U CN 205702501U CN 201620204954 U CN201620204954 U CN 201620204954U CN 205702501 U CN205702501 U CN 205702501U
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- seam
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- turning
- turning cutting
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Abstract
The utility model discloses a kind of valve seam turning cutting tool, described cutter includes shaping blade, described shaping blade be shaped as circular arc；The anterior angle of described cutter is 5 °, and the relief angle of described cutter is 8 °.The turning cutting tool that the utility model provides passes through appropriate design tool geometrical parameter, knife face after setting avoidance circular arc, biasing, improve the chip removal situation in turning process, prevent seam from damaging, the turning surface quality of seam feature has been effectively ensured, turnery processing for similar structures is offered reference, and produces for space flight Product Development and provides powerful support.
Description
Technical field
The utility model relates to a kind of turning cutting tool, is specifically related to a kind of for carrier rocket valve seam turning cutting tool.
Background technology
Valve is the critical component in carrier rocket pressurizing transmission system, and seam is the key feature in valve body, during valve working, spool is subjected to displacement relative to valve body, realize linear contact lay to reach to seal with valve body seam, therefore, the accurate to dimension of seam feature and surface quality are directly connected to the overall performance of valve.Specifically, seam is similar to an annulus platform, is positioned on valve body sealing surface, and its cross section is semi arch, cross section arc radius generally between 0.2mm to 0.35mm, surface roughness requirements Ra0.8 μm.Requiring according to detail of design, seam feature uses NC Turning Process Technology to machine, and uses regular turning tool to be difficult to ensure that accurate to dimension and surface quality along the result that seam Programing by outline processes, and causes impact to space flight type product quality.
Content of the invention
The problem that the present invention solves is the machining accuracy that prior art cannot meet carrier rocket valve seam；For solving described problem, the present invention provides a kind of valve seam turning cutting tool.
The present invention provide valve seam turning cutting tool include shape blade, described shaping blade be shaped as circular arc；The anterior angle of described cutter is 5 °, and the relief angle of described cutter is 8 °.
Further, after described cutter, knife face has the avoidance circular arc that radius is 1mm, and rear knife face is overall to the direction biasing 0.3mm away from point of a knife.
Further, the material of described cutter is carbide alloy YG 8.
Further, the arc radius dimensional tolerance of described shaping blade is set to ± 0.02mm, and crown height dimensional tolerance is set to 0.03 ~ 0.06mm.
Further, the surface roughness of described shaping blade is Ra0.4 μm.
The utility model compared with prior art provides the benefit that: the turning cutting tool that the utility model provides selects the carbide alloy YG 8 that high-temperature behavior is excellent, wearability is good as cutter material, by appropriate design tool geometrical parameter, knife face after setting avoidance circular arc, biasing, improve the chip removal situation in turning process, prevent seam from damaging, the turning surface quality of seam feature has been effectively ensured, turnery processing for similar structures is offered reference, and produces for space flight Product Development and provides powerful support.
Brief description
Fig. 1 a is carrier rocket valve body figure, and Fig. 1 b is valve body seam partial enlarged drawing.
The front view of the valve seam turning cutting tool that Fig. 2 a designs for the utility model, the top view of the valve seam turning cutting tool that Fig. 2 b designs for the utility model.
Detailed description of the invention
The utility model relates to a kind of cutter for carrier rocket valve seam feature turning.As illustrated in figs. ia and ib, seam 1 is the key feature in valve body, and during valve working, spool is subjected to displacement relative to valve body, realizes linear contact lay to reach to seal with valve body seam.Seam is similar to an annulus platform, is positioned on valve body sealing surface, and cross section is semi arch, and cross section arc radius is r=0.35mm, surface roughness requirements Ra0.8 μm.
Prior art cannot meet surface quality requirements and the required precision of seam turning.In order to ensure the surface quality of seam turning, the utility model design seam turning cutting tool as shown in Figure 2 a and 2 b.Carbide alloy YG 8 selected by cutter material, and this material can keep preferable cutting ability when cutting temperature is higher, and wearability is preferable with impact flexibility, is suitable to the valve body piece of processing stainless steel material.As shown in Figure 2 a and 2 b, the cutter of the utility model design is formed turning tool, lathe tool is provided with the shaping blade 2 for processing seam feature, in order to ensure the dimensional accuracy of seam turning, shaping blade need to be according to its size of seam characteristic Design and arrange dimensional tolerance, described shaping blade be shaped as circular arc, wherein arc radius dimensional tolerance is set to ± 0.02mm, crown height dimensional tolerance is set to+0.03 to+0.06mm, not full with the seam shape of avoiding turning to complete, affect valve seal performance.For seam form turn, increase relief angle, the rear knife face friction in turning process can be reduced, it is ensured that the roughness of seam turning；But excessive relief angle, the intensity of point of a knife can be affected, therefore, the relief angle of seam turning cutting tool is set to β=8 °.Bigger anterior angle, advantageously reduces the resistance through rake face for the chip flow, it is achieved brisk cutting, and anterior angle is excessive, affects point of a knife intensity equally, and therefore, seam turning cutting tool anterior angle is set to α=5 °.Require according to design, valve body seam does not allows to exist scuffing and the defect such as damages, and in order to prevent damaging, after cutter, knife face arranges the avoidance circular arc 3 that radius is 1mm, and bias ξ=0.3mm by overall for rear knife face to away from point of a knife direction, to stop the possibility that seam in turning process is bruised.Seam surface roughness requirements reaches Ra0.8 μm, and therefore the surface roughness requirements of formed turning tool blade should be higher than that seam, is set to Ra0.4 μm, and this lathe tool uses low-speed WEDM processes to complete, and needs repeatedly to cut, to reach the surface quality of requirement in cutting.
During the cutter turning stainless steel body seam that the utility model designs, should be sufficiently cool, note reducing problem of cutting.Should select moderate cutting parameter, cutting speed should not be higher than 20r/min, and the amount of feeding should not be higher than 0.1mm/min.
In sum, the cutter of the utility model design, turning valve body seam in the way of forming, selects the carbide alloy YG 8 that high-temperature behavior is excellent, wearability is good as cutter material, by appropriate design tool geometrical parameter, knife face after setting avoidance circular arc, biasing, improve the chip removal situation in turning process, prevent seam from damaging, the turning surface quality of seam feature has been effectively ensured, turnery processing for similar structures is offered reference, and produces for space flight Product Development and provides powerful support.
Although the present invention is open as above with preferred embodiment; but it is not for limiting the present invention; any those skilled in the art are without departing from the spirit and scope of the present invention; may be by the method for the disclosure above and technical solution of the present invention is made possible variation and modification by technology contents; therefore; every content without departing from technical solution of the present invention; any simple modification, equivalent variations and the modification made above example according to the technical spirit of the present invention, belongs to the protection domain of technical solution of the present invention.
Claims (5)
1. a valve seam turning cutting tool, it is characterised in that described cutter include shape blade, described shaping blade be shaped as circular arc；The anterior angle of described cutter is 5 °, and the relief angle of described cutter is 8 °.
2., according to the valve seam turning cutting tool described in claim 1, it is characterised in that after described cutter, knife face has the avoidance circular arc that radius is 1mm, rear knife face is overall to the direction biasing 0.3mm away from point of a knife.
3. according to the valve seam turning cutting tool described in claim 1, it is characterised in that the material of described cutter is carbide alloy YG 8.
4., according to the valve seam turning cutting tool described in claim 1, it is characterised in that the arc radius dimensional tolerance of described shaping blade is set to ± 0.02mm, crown height dimensional tolerance is set to 0.03 ~ 0.06mm.
5. according to the valve seam turning cutting tool described in claim 1, it is characterised in that the surface roughness of described shaping blade is Ra0.4 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620204954.9U CN205702501U (en) | 2016-03-17 | 2016-03-17 | Valve seam turning cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620204954.9U CN205702501U (en) | 2016-03-17 | 2016-03-17 | Valve seam turning cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205702501U true CN205702501U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620204954.9U Active CN205702501U (en) | 2016-03-17 | 2016-03-17 | Valve seam turning cutting tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN205702501U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952969A (en) * | 2017-11-29 | 2018-04-24 | 首都航天机械公司 | A kind of hard alloy valve base lathe tool and its application |
-
2016
- 2016-03-17 CN CN201620204954.9U patent/CN205702501U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952969A (en) * | 2017-11-29 | 2018-04-24 | 首都航天机械公司 | A kind of hard alloy valve base lathe tool and its application |
| CN107952969B (en) * | 2017-11-29 | 2019-09-17 | 首都航天机械公司 | A kind of hard alloy valve base lathe tool and its application |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |