CN102922379A - Cylindrical grinding machining method for spiral line - Google Patents
Cylindrical grinding machining method for spiral line Download PDFInfo
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- CN102922379A CN102922379A CN2012104058055A CN201210405805A CN102922379A CN 102922379 A CN102922379 A CN 102922379A CN 2012104058055 A CN2012104058055 A CN 2012104058055A CN 201210405805 A CN201210405805 A CN 201210405805A CN 102922379 A CN102922379 A CN 102922379A
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Abstract
The invention discloses a method for grinding an outer circle of a spiral line, which comprises the following steps: adjusting the state of a grinding machine, wherein the rotating speed of the grinding machine is 80-120 rpm, and a guide wheel of the grinding machine deflects 1.5 ℃ relative to a zero scale line of the guide wheel before grinding; grinding a grinding wheel; roughly grinding, namely placing the spiral line with the core rod on a guide rail of a grinding machine, removing a part to be cut of the spiral line after each cutting, forming a fresh cutting surface on the outer surface, removing burrs after the cutting at the discontinuous part of the spiral line on the feeding side, changing the feeding direction after grinding each batch of the spiral line once, wherein the cutting amount of each time is 0.01mm, and stopping grinding when the residual size is 0.02 mm; and fine grinding, wherein the cutting amount is 0.005mm each time, and the feeding direction is changed after the spiral line of each batch is ground once. The invention has the advantages that: the requirements of the finish degree and the size processing of the outer diameter of the spiral line are met; the pitch of the shaped helix is not affected.
Description
Technical field
The invention belongs to microwave electrovacuum field, relate to helix processing method in the slow-wave component of travelling-wave tubes, relate in particular to a kind of helix peripheral milling processing method.
Background technology
In microwave regime, travelling-wave tubes is the device that bandwidth and gain combination is best, and wherein helix TWT is most widely used.The high-frequency circuit of helix TWT generally is a spiral line type wire or metal tape, by three or more the multimedium bar cramp hold and be fixed in the Can.Spiral line type basic role wiry provides a Propagation speed near electronic movement velocity and has the frequency electromagnetic waves of enough strong axial electric field, makes electromagnetic wave and beam coupling that signal is amplified.Wire is referred to as and is helix, for high-frequency energy with and the carrier of beam energy exchange and high-frequency energy transmission, the wire material is generally banded structure, is spring-like when using in travelling-wave tubes inside, has certain internal-and external diameter and certain pitch.The helix inside/outside diameter size is smaller, and external diameter determines by the thickness of band, and generally with the increase of the operating frequency trend that tapers off, and required precision is high, is the critical component that affects the travelling-wave tubes major parameter.
The helix material is wound on the core bar by special lathe, core bar became whole after coiling finished with helix winding, then carry out follow-up heat treatment, mechanical treatment and chemical treatment, helix is fixed on the core bar always in these follow-up processing, pitch when keeping coiling, take off core bar after processing finishes, helix is just made and is finished.
In the machining of helix, most important is exactly processing to the helix external diameter.Helix forms the helical form of a constant pitch at core bar at the helix material of winding process band shape, the outer surface of material is because certain twisted phenomena occurs in discontinuity, cause the outer surface after the coiling to have the phenomenons such as burr, peeling, pit, layering, its surface smoothness is affected, seriously increase the loss of microwave in transmission course, and then reduced the interaction efficiency of travelling-wave tubes.Therefore need to process its outer surface, improve fineness.Helix has very high required precision in assembling process squadron internal diameter, external diameter and thickness equidimension simultaneously, and the helix surface quality after the coiling setting is poor, and the external diameter precision after forming simultaneously is low, also needs to carry out external diameter processing.In the slow wave system assembling process, also need to consider the heat dissipation problem in the slow-wave component, because slow wave system is transmitted powerful output, inner high-power electron beam intercepts a large amount of heat of the inner formation of helix simultaneously, do not go out and to cause internal structure to change even burn slow-wave structure if heat is loose, like this external diameter of helix also had certain flat card degree requirement, the thermal resistance in the time of can reducing like this assembling increases the heat radiation of the slow wave system.
The importance of above visible helix external diameter processing, but the characteristics of helix own are that pitch accuracy is high, sectional dimension is little, yielding, be difficult to carry out machining.Factor can cause the helix pitch to change even the variation of internal-and external diameter to conventional machining because cutting force is excessive etc., causes the helix variation even scraps.
Summary of the invention
Technical problem to be solved by this invention is how to guarantee that helix adds man-hour carrying out external diameter, guarantees that namely pitch accuracy does not change, and finishes again the processing of outside dimension and improves the surface smoothness of external diameter direction.In view of this, be necessary to provide a kind of helix peripheral milling processing method, by rotating speed, mill processing direction of feed, the each cutting output of processing, quantity of every lots processed etc. of grinding of control grinding machine, finish the external diameter of helix and process.
The present invention is achieved in that a kind of helix peripheral milling processing method, and it may further comprise the steps:
Regulate the grinding machine state, the rotating speed of this grinding machine is 80-120 rev/min, 1.5 ° of the relative guide wheel zero graduation line deflections before grinding processing of the guide wheel of this grinding machine;
Corase grind, helix with core bar is placed on the guide rail of this grinding machine, after each cutting, remove at the position to be cut of this helix, and form fresh cutting face at the outer surface of this helix, and burr after cutting is removed at the discontinuous place of a side helix of feeding then, every batch of helix changes direction of feed after once grinding processing, each cutting output is 0.01mm, is ground to stop grinding when surplus size is 0.02mm;
Correct grinding, each cutting output is 0.005mm, every batch of helix changes direction of feed after once grinding processing.
As the further improvement of such scheme, further comprising the steps of before corase grind: grinding abrasive disk, before each mill processing, adopt diamond pen to sharpen emery wheel and the guide wheel of this grinding machine, repair the surface quality of this emery wheel and this guide wheel.Preferably, further comprising the steps of between corase grind and correct grinding: as with diamond pen emery wheel and the guide wheel of this grinding machine to be repaired the surface.
As the further improvement of such scheme, this helix peripheral milling processing method is further comprising the steps of: packet packaging, the external diameter surface quality to helix after the processing detects, and outside dimension is carried out by group categories, then packs
As the further improvement of such scheme, this helix peripheral milling processing method is further comprising the steps of: deliver to after the packing in the subsequent handling, carried out the anti-oxidation of oil sealing in 2 hours.
As the further improvement of such scheme, this helix peripheral milling processing method is further comprising the steps of: constant maintenance helix pitch in the whole operating process.
As the further improvement of such scheme, this helix peripheral milling processing method is further comprising the steps of: after mill processing, measure external diameter before, dip in alcohol along helix direction of rotation wiping helix surface gently with byssus.
As the further improvement of such scheme, this grinding machine is centerless grinder.
As the further improvement of such scheme, this helix is elastic helix shape structure.
Helix peripheral milling processing method of the present invention, with processing together with helix and inner core bar of having formalized, control simultaneously rotating speed, mill processing direction of feed, the each cutting output of processing, quantity of every lots processed etc. of grinding of grinding machine, finishing the external diameter of helix processes, guarantee that outside dimension meets design requirement, improve the surface smoothness of external diameter direction, guarantee that simultaneously the pitch of helix can not change.
Description of drawings
Fig. 1 is the structural representation before the processing of helix mill;
Fig. 2 is that the helix peripheral milling processing method of utilizing embodiment of the present invention to provide is carried out the structural representation that the helix mill adds man-hour;
Fig. 3 is the local structural representation that amplifies when the helix mill is processed among Fig. 2.
Main symbol description: helix 1, core bar 2, helix have cut position 3, cutting face 4, the rear burr 5 of cutting.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Feature of the present invention is a kind of helix peripheral milling processing method, mainly is rotating speed, mill processing direction of feed, the each cutting output of processing, quantity of every lots processed etc. of grinding by the control grinding machine, and finishes the processing of helix external diameter.Wherein the control of the rotating speed of grinding machine guarantees that the cutting force of grinder wheel is unlikely to excessive within the specific limits, avoids the damage type impact on helix external diameter direction, for keeping helix in the feeding of grinding machine direction, the guide wheel direction of grinding machine is regulated simultaneously.Mill adds man-hour, and direction of feed needs to change according to the number of times of cutting, avoids equidirectional feeding stressed to spiral wire material list aspect, and simultaneously one-sided feeding burr is excessive, is difficult to remove.The cutting output of control mill processing can effectively be controlled each cutting stressed to helix, avoids causing the variation of pitch.Control the quantity of every lots processed, can control the state that mill adds emery wheel in man-hour, guide wheel, avoid repeatedly processing state is changed, cause unnecessary waste.
Take certain concrete cast helix as example, the implementation step is as follows:
Structural representation before the processing of helix mill as shown in Figure 1, wherein helix 1 and core bar 2 are an integral body after setting is processed, if there is not inner core bar structure, helix 1 is elastic helix shape structure, can't carry out grinding, core bar 2 main support helixes 1 can't move on the directions such as the pitch of assurance helix 1, external diameter, emphasize at this.
Carrying out grinding, first every batch processing quantity is being described, the outer of helix 1 carries out grinding in the process, because the effect of power is mutual, also can the surface of emery wheel, guide wheel be affected to some extent, so need the quantity of lots processed to stipulate.Therefore, process as one batch take 20 helixes 1 when quantity during greater than 20 in this regulation; When quantity during less than 20, process as one batch.
Concrete technology is as follows:
1. regulate the grinding machine state, the grinding machine type is centerless grinder, and the rotating speed of grinding machine is 80-120 rev/min, guide wheel 1.5 ° of relative guide wheel zero graduation line deflections before grinding processing.
2. grinding abrasive disk before each mill processing, adopts diamond pen to sharpen emery wheel and guide wheel, repairs its surface quality.
3. corase grind is placed on the helix 1 with core bar on the guide rail of centerless grinder, and the cutting output of each feeding is 0.01mm.Helix 1 structural representation such as Fig. 2 and Fig. 3 when grinding.After each cutting, helix 1 has cut position 3 and has got rid of, and forms fresh cutting face 4 at the outer surface of helix 1, then burr 5 after cutting is removed at a side helix 1 discontinuous place of feeding.Every batch of helix 1 changes direction of feed after once grinding processing.Each cutting output is 0.01mm.Be ground to and stop grinding when surplus size is 0.02mm.
4. correct grinding when surplus size is 0.02mm, begins to finish grind.At first again with diamond pen emery wheel and guide wheel are repaired the surface.Then carry out grinding, each cutting output is 0.005mm.Every batch of helix 1 changes direction of feed after once grinding processing.
5. the external diameter surface quality to helix 1 detects after the processing, and outside dimension is carried out by group categories, then packs.Deliver to after the packing in the subsequent handling, in 2 hours, carry out the anti-oxidation of oil sealing.
In operation points for attention wherein: the pitch that can not bump random helix 1 in the operating process.Before measuring external diameter after the mill processing, dip in alcohol along helix 1 direction of rotation wiping helix 1 surface gently with byssus.Helix 1 external diameter just machines like this.
The method can be controlled at the outside dimension precision of helix 1 in the 0.005mm, and fineness reaches the precision of ▽ ▽ more than 8, can not affect the pitch of the helix 1 that formalized simultaneously in process.
The advantage of helix peripheral milling processing method of the present invention is:
1. can satisfy the requirement of helix 1 external diameter fineness;
2. can satisfy the requirement of helix 1 outside dimension processing;
3. in process, can not affect the pitch of the helix 1 that formalized.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a helix peripheral milling processing method is characterized in that, it may further comprise the steps:
Regulate the grinding machine state, the rotating speed of this grinding machine is 80-120 rev/min, 1.5 ° of the relative guide wheel zero graduation line deflections before grinding processing of the guide wheel of this grinding machine;
Corase grind, helix with core bar is placed on the guide rail of this grinding machine, after each cutting, remove at the position to be cut of this helix, and form fresh cutting face at the outer surface of this helix, and burr after cutting is removed at the discontinuous place of a side helix of feeding then, every batch of helix changes direction of feed after once grinding processing, each cutting output is 0.01mm, is ground to stop grinding when surplus size is 0.02mm;
Correct grinding, each cutting output is 0.005mm, every batch of helix changes direction of feed after once grinding processing.
2. helix peripheral milling processing method as claimed in claim 1, it is characterized in that, further comprising the steps of before corase grind: grinding abrasive disk, before each mill processing, adopt diamond pen to sharpen emery wheel and the guide wheel of this grinding machine, repair the surface quality of this emery wheel and this guide wheel.
3. helix peripheral milling processing method as claimed in claim 1 or 2 is characterized in that, and is further comprising the steps of between corase grind and correct grinding: as with diamond pen emery wheel and the guide wheel of this grinding machine to be repaired the surface.
4. helix peripheral milling processing method as claimed in claim 1 is characterized in that, it is further comprising the steps of: packet packaging, the external diameter surface quality to helix after the processing detects, and outside dimension is carried out by group categories, then packs.
5. helix peripheral milling processing method as claimed in claim 4 is characterized in that, it is further comprising the steps of: deliver to after the packing in the subsequent handling, carried out the anti-oxidation of oil sealing in 2 hours.
6. helix peripheral milling processing method as claimed in claim 1 is characterized in that, it is further comprising the steps of: constant maintenance helix pitch in the whole operating process.
7. such as claim 1 or 6 described helix peripheral milling processing methods, it is characterized in that, it is further comprising the steps of: after mill processing, measure external diameter before, dip in alcohol along helix direction of rotation wiping helix surface gently with byssus.
8. helix peripheral milling processing method as claimed in claim 1 is characterized in that, this grinding machine is centerless grinder.
9. helix peripheral milling processing method as claimed in claim 1 is characterized in that, this helix is elastic helix shape structure.
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| CN201210405805.5A CN102922379B (en) | 2012-10-23 | 2012-10-23 | Cylindrical grinding machining method for spiral line |
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| CN201210405805.5A CN102922379B (en) | 2012-10-23 | 2012-10-23 | Cylindrical grinding machining method for spiral line |
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| CN102922379B CN102922379B (en) | 2014-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106799648A (en) * | 2017-03-02 | 2017-06-06 | 重庆德卡汽车零部件制造有限公司 | A kind of helix peripheral milling processing method |
| CN108462301A (en) * | 2018-03-06 | 2018-08-28 | 苏州凯航电机有限公司 | A kind of machine shaft and its production method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3534502A (en) * | 1968-01-24 | 1970-10-20 | Bryant Grinder Corp | Apparatus and method for grinding an external surface of revolution |
| JPH05151890A (en) * | 1991-11-29 | 1993-06-18 | New Japan Radio Co Ltd | Manufacture of ribon type helix for traveling-wave tube |
| JPH10193262A (en) * | 1997-01-09 | 1998-07-28 | Micron Seimitsu Kk | Method and device for dressing grinding wheel for centerless grinding machine and centerless grinding machine |
| CN101694825A (en) * | 2009-10-14 | 2010-04-14 | 安徽华东光电技术研究所 | Method for processing tungsten helical line of millimeter wave traveling-wave tube |
| CN102243965A (en) * | 2011-05-31 | 2011-11-16 | 南京三乐电子信息产业集团有限公司 | Preparation method for broadband millimeter wave spiral line |
-
2012
- 2012-10-23 CN CN201210405805.5A patent/CN102922379B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3534502A (en) * | 1968-01-24 | 1970-10-20 | Bryant Grinder Corp | Apparatus and method for grinding an external surface of revolution |
| JPH05151890A (en) * | 1991-11-29 | 1993-06-18 | New Japan Radio Co Ltd | Manufacture of ribon type helix for traveling-wave tube |
| JPH10193262A (en) * | 1997-01-09 | 1998-07-28 | Micron Seimitsu Kk | Method and device for dressing grinding wheel for centerless grinding machine and centerless grinding machine |
| CN101694825A (en) * | 2009-10-14 | 2010-04-14 | 安徽华东光电技术研究所 | Method for processing tungsten helical line of millimeter wave traveling-wave tube |
| CN102243965A (en) * | 2011-05-31 | 2011-11-16 | 南京三乐电子信息产业集团有限公司 | Preparation method for broadband millimeter wave spiral line |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106799648A (en) * | 2017-03-02 | 2017-06-06 | 重庆德卡汽车零部件制造有限公司 | A kind of helix peripheral milling processing method |
| CN106799648B (en) * | 2017-03-02 | 2018-11-06 | 重庆德卡汽车零部件制造有限公司 | A kind of helix peripheral milling processing method |
| CN108462301A (en) * | 2018-03-06 | 2018-08-28 | 苏州凯航电机有限公司 | A kind of machine shaft and its production method |
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| CN102922379B (en) | 2014-12-24 |
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Address after: 241000 Emshan Road, Yijiang District, Wuhu City, Anhui Province Patentee after: ANHUI HUADONG PHOTOELECTRIC TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 241002 Huaxia science and Technology Park, hi tech Development Zone, Yijiang District, Wuhu, Anhui Patentee before: Anhui Huadong Polytechnic Institute |
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