CN201758110U - Molding tool of cathode heater of travelling wave tube - Google Patents
Molding tool of cathode heater of travelling wave tube Download PDFInfo
- Publication number
- CN201758110U CN201758110U CN2010202845974U CN201020284597U CN201758110U CN 201758110 U CN201758110 U CN 201758110U CN 2010202845974 U CN2010202845974 U CN 2010202845974U CN 201020284597 U CN201020284597 U CN 201020284597U CN 201758110 U CN201758110 U CN 201758110U
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- CN
- China
- Prior art keywords
- cylindrical boss
- axis body
- end cap
- wave tube
- travelling wave
- 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 - Fee Related
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Abstract
The utility model discloses a molding tool of a cathode heater of a travelling wave tube. The molding tool includes a shaft body, a columnar lug boss is arranged at the top of the shaft body, and an end cover is arranged at the top of the shaft body and sleeved outside the columnar lug boss. The molding tool avoids the repeated bending of the heater in the tool, reduces cracks and layers caused by mechanical force, ensures that the resistance of the heater which is encapsulated and sintered is reduced, and improves the qualification rate of the heater component.
Description
Technical field
The utility model relates to the cathode filament processing unit (plant) of travelling wave tube process units field, especially travelling wave tube, is specially a kind of travelling wave tube cathode heater moulding frock.
Background technology
Traditional barium-tungsten dispense cathode belongs to hot cathode, needs heated filament that necessary heat is provided during work, and thermally equivalent is extremely important for cathode emission stability.Before the heated filament embedding, the heated filament after the coiling need be made definite shape, typing, etching and annealing.Traditional coiling mode has makes incense coil shape, double helix shape, ring-type etc. with the heated filament after the coiling, complex process, and rate of finished products is low, and the thermal uniformity of filament assembly is poor, influences cathode emission.
The utility model content
The purpose of this utility model provides a kind of travelling wave tube cathode heater moulding frock, heated filament once can be turned to the S type, to solve the heated filament moulding frock complex process of prior art, is shaped to the problem that other shapes influence thermal uniformity.
In order to achieve the above object, the technical scheme that the utility model adopted is:
A kind of travelling wave tube cathode heater moulding frock, include axis body, it is characterized in that: described axis body top is connected with the cylindrical boss concentric with axis body, cylindrical boss and axis body junction constitute step, described cylindrical boss crown center position has flat recess, described flat recess both sides notch is positioned at the cylindrical boss edge, also include end cap, described end cap places on the step at axis body top and is enclosed within the outer and cylindrical boss of described cylindrical boss and is rotatably assorted, uncovered both sides are sidewall in the middle of the described end cap, end cap side walls centre position has the flat recess that notch is positioned at the side edge edge, and the flat recess groove depth of described end cap sidewall is identical with the flat recess groove depth of described cylindrical boss.
Described a kind of travelling wave tube cathode heater moulding frock, it is characterized in that: described cylindrical boss outer wall edge all is shaped to fillet.
Described a kind of travelling wave tube cathode heater moulding frock, it is characterized in that: described axis body outer wall is suppressed with decorative pattern.
In the utility model, can set end cap and the concrete size of axis body according to heated filament " S " type size.In order to make heated filament after the coiling in forming process, not be subjected to the injury of frock, turn than being easier to again, the frock cylindrical boss edge that needs the turning is processed into the fillet of certain radian.For heated filament is moved in end cap and axis body easily, the cylindrical boss top of placement heated filament, the flat recess width of end cap sidewall amplify than heated filament.In order to fix, suppress decorative pattern on the axis body, to increase the frictional force of axis body and axis body pedestal at the forming process central axis.In order to guarantee hardness, heated filament moulding frock material adopts stainless steel and quenchs.
The utility model has compared with prior art been avoided heated filament alternating bending in frock, has reduced heated filament because of slight crack and layering that mechanical force causes, has guaranteed the reduction of resistance behind the heated filament embedding sintering, has improved the qualification rate of filament assembly.Less because of heated filament deformation ratio after annealing of moulding, the firing rate of having avoided other heated filament molding mode to cause does not wait, and causes filament assembly resistance instability, and the cathode emission current unevenness is even.Because be moulding on same frock, so each heated filament all is identical, process repeatability and good stability.
Description of drawings
Fig. 1 is the utility model structure side cutaway view.
Fig. 2 is the utility model structure vertical view.
Embodiment
As shown in Figure 1 and Figure 2.A kind of travelling wave tube cathode heater moulding frock includes axis body 2, and axis body 2 outer walls are suppressed with decorative pattern.Axis body 2 tops are connected with the cylindrical boss 3 concentric with axis body 2, and cylindrical boss 3 outer wall edges all are shaped to fillet.Cylindrical boss 3 and axis body 2 junctions constitute step, cylindrical boss 3 crown center positions have flat recess 4, flat recess 4 both sides notches are positioned at cylindrical boss 3 edges, also include end cap 1, end cap 1 places on the step at axis body 2 tops and is enclosed within the outer and cylindrical boss 3 of cylindrical boss 3 and is rotatably assorted, uncovered both sides are sidewall in the middle of the end cap 1, end cap 1 side walls centre position has the flat recess 5 that notch is positioned at the side edge edge, and flat recess 5 groove depths of end cap 1 sidewall are identical with flat recess 4 groove depths of cylindrical boss 3.
The heated filament forming process is as follows:
1, byssus is tiled on the workbench;
2, with surgical scissors heated filament that coiling is good according to the figure paper size section of being cut into;
3, axis body 2 is fixed on the pedestal of axis body 2;
4, end cap 1 is put on the axis body 2;
5, end cap 1 is consistent with groove direction adjustment on the axis body 2;
6, with tweezers the heated filament that shears is placed trench bottom and adjusts the position, make the service area of heated filament be positioned at axis body 2 in the heart between;
7, rotating end cap 1 (clockwise or counterclockwise) 180 degree make heated filament become complete " S " type;
8, end cap 1 is separated with axis body 2, take out heated filament after the moulding in the end cap 1 with tweezers;
9,, make two heated filament legs parallel and become 90 degree with " S " face with the heated filament leg bending after with moulding of tweezers and flat-nose pliers.A heated filament moulding finishes.
Claims (3)
1. travelling wave tube cathode heater moulding frock, include axis body, it is characterized in that: described axis body top is connected with the cylindrical boss concentric with axis body, cylindrical boss and axis body junction constitute step, described cylindrical boss crown center position has flat recess, described flat recess both sides notch is positioned at the cylindrical boss edge, also include end cap, described end cap places on the step at axis body top and is enclosed within the outer and cylindrical boss of described cylindrical boss and is rotatably assorted, uncovered both sides are sidewall in the middle of the described end cap, end cap side walls centre position has the flat recess that notch is positioned at the side edge edge, and the flat recess groove depth of described end cap sidewall is identical with the flat recess groove depth of described cylindrical boss.
2. a kind of travelling wave tube cathode heater moulding frock according to claim 1, it is characterized in that: described cylindrical boss outer wall edge all is shaped to fillet.
3. a kind of travelling wave tube cathode heater moulding frock according to claim 1, it is characterized in that: described axis body outer wall is suppressed with decorative pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202845974U CN201758110U (en) | 2010-07-30 | 2010-07-30 | Molding tool of cathode heater of travelling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202845974U CN201758110U (en) | 2010-07-30 | 2010-07-30 | Molding tool of cathode heater of travelling wave tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758110U true CN201758110U (en) | 2011-03-09 |
Family
ID=43645400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202845974U Expired - Fee Related CN201758110U (en) | 2010-07-30 | 2010-07-30 | Molding tool of cathode heater of travelling wave tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280454A (en) * | 2015-09-15 | 2016-01-27 | 安徽华东光电技术研究所 | Heater capable of uniformly heating and preparation method thereof |
-
2010
- 2010-07-30 CN CN2010202845974U patent/CN201758110U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280454A (en) * | 2015-09-15 | 2016-01-27 | 安徽华东光电技术研究所 | Heater capable of uniformly heating and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |