CN105322270B - A kind of manufacturing method of cavity filter cover board - Google Patents
A kind of manufacturing method of cavity filter cover board Download PDFInfo
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- CN105322270B CN105322270B CN201510785132.4A CN201510785132A CN105322270B CN 105322270 B CN105322270 B CN 105322270B CN 201510785132 A CN201510785132 A CN 201510785132A CN 105322270 B CN105322270 B CN 105322270B
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- machine
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- oil pressure
- cover board
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Abstract
A kind of manufacturing method of cavity filter cover board,Including selection,Positioning,Processing tuning threaded hole,Plate is stretched by oil pressure stretching-machine,During stretching by the one of cover board copper towards aluminium one side stretch,According to the thickness of plate and material drawing die is needed to be equipped with multiple stations,Stretching start after first by the plate Rapid stretching of the tuning screw thread hole site determined on cover board to just determining station,Then multi-drawing from fast to slow,Oil pressure stretching-machine will be after plate stretch to last station,Stretching-machine starts to be slowly returned to original position,The processing head of stretching-machine is quick anti-secondary at most during return,Repeatedly anti-top post-tensioning machine returns to original position,Oil pressure stretching-machine processes a boss with cover board one in tuning screw thread hole location at this time,The center section of boss is hollow,The present invention handles stretching problem using hydraulic press,It is punched compared to traditional approach with press machine,The yield rate higher of the present invention,The effect of manufacture is also more preferable.
Description
Technical field
The present invention relates to field of signal processing more particularly to a kind of manufacturing methods of cavity filter cover board.
Background technology
At present, the signal processing of cavity body filter is usually completed by the tuning Self-locking screw on filter cover board, generally
For tuning screw handle the problem of be signal intermodulation the problem of, in particular to two different frequency signals, in a certain system
The signal for the new frequency for being superimposed and generating.
The plate of current common filter lid board fabrication method generally use is pure copper material or electroplating surface copper
Metal material, cost is higher, and what is processed is mostly the tuned window for needing mating tuning swivel nut, and uses punching press during processing mostly
Mode process tuned window, one side impact style is easily damaged cover board, and defect rate is higher, the tune on the other hand processed
Humorous hole also needs additionally mounted upper tuning swivel nut, and the modes such as tuning swivel nut use is welded, pressed, gluing are fixed on tuned window, are adjusted
The installation of humorous swivel nut not only needs cost of labor and processing cost, meanwhile, this tuning swivel nut in addition installed additional on tuned window
And it is unstable, it is easy for generating loosening, and the interface also simultaneously out-of-flatness of tuned window and tuning swivel nut after a period of time, most
Actual tuning effect is influenced eventually.
The content of the invention
The present invention is intended to provide a kind of manufacturing method of cavity filter cover board.
In order to solve the above technical problems, the present invention is using following technical scheme, a kind of manufacturer of cavity filter cover board
Method comprises the following steps：
Step 1：Suitable plate is chosen in the case of selection, considering cost and performance, plate uses aluminium, such as
The size of fruit plate is improper, and appropriate cut is carried out to plate；
Step 2：Positioning determines the position in tuning threaded hole and cover screw hole according to the actual conditions of filter cavity；
Step 3：Cover screw hole is processed, after the position in cover screw hole is determined, stamps out cover board spiral shell using lathe
Nail hole；
Step 4：Processing tuning threaded hole, when processing, stretch plate using oil pressure stretching-machine, stretch plate use
Punch-pin be placed on the hydraulic cylinder of hydraulic press, cavity plate is placed on the pedestal of hydraulic press, according to the thickness of plate and the needs of material
Drawing die is equipped with multiple stations, stretches after starting first by the plate Rapid stretching of the tuning screw thread hole site determined on cover board
To just determining station；
Step 5：Just determine described at station, oil pressure stretching-machine exerts a force perpendicular to lid surface direction, according to the thickness of plate
Degree and material carry out cover board multi-drawing processing, and stretching-machine sets different tensile speeds according to the station on drawing die,
From station is just determined to a last station, from fast to slow, stretching-machine will determine the speed of stretching on cover board from fast to slow with regard to this
The plate stretch of good tuning screw thread hole site is to corresponding station, until oil pressure is drawn after plate is stretched to the last one station
It stretches machine and stops force；
Step 6：By after plate stretch to last station, stretching-machine starts to be slowly returned to original position oil pressure stretching-machine, draws
It is quick anti-secondary at most during return to stretch the processing head of machine, repeatedly instead pushes up post-tensioning machine and returns to original position, oil pressure stretches at this time
Machine processes a boss with cover board one in tuning screw thread hole location, and the center section of boss is hollow；
Step 7：Screw thread, boss internal thread holes are processed inside the inside of boss and cover screw hole using lathe
The diameter of the swivel nut of formation is more than the diameter of undressed part inside boss；
Step 8：Inside boss it is undressed go out screw thread the annular elastic sheet metal of part installation, the diameter of sheet metal is small
In the diameter of filter tuner Self-locking screw.
Preferably, the thickness of the plate is 0.8-3.5mm.
Preferably, the cyclic spring sheet metal is cyclic spring copper sheet.
Preferably, the height that oil pressure stretches the boss of machining is 1-20mm.
Preferably, the swivel nut that the threaded hole that step 7 processes inside boss is formed is applicable in the tuning of M5-M10 specifications
Self-locking screw.
Preferably, oil pressure stretching-machine carries out at least 3 stretch process to the last one station from station is just determined to cover board.
Preferably, oil pressure stretching-machine realizes tensile speed from fast to slow by cylinder.
Preferably, hydraulic press is equipped with hydraulic circuit, anti-top of the hydraulic circuit restrained stretching machine during return.
Compared with traditional filter lid board fabrication method, present invention whole aluminium is used as the material of plate, on the one hand
Be because aluminium is relatively cheap, material cost can be greatly saved to manufacture cover board using aluminium, the quality of another aspect aluminium compared with
Soft, processing is got up easily, also saves processing cost, it is contemplated that the actual demand of present filter tuning tunes Self-locking screw
Specification at present for M5-M10, and accordingly, since the aluminium extensibility that cover board uses is preferable, the thickness of cover board need to be only controlled in 0.8-
3.5mm, cover board is light and does not influence using effect, further saves material cost, and the height of boss can also control
In 1-20mm, it is sufficient to meet the requirement of Self-locking screw；The present invention replaces traditional tuned window and tuning spiral shell using boss
The combination of set is that only plate need to be stretched because processing boss, using lathe with regard to that can be automatically performed tuning screw thread
The processing in hole, without still further by stamping out tuned window and fixed tuning two sets of processes of swivel nut, which is to pass through
What the material of plate processed, the present invention while process is saved will not also waste of materials, and integrally formed boss ten
Divide and consolidate, do not interfere with the effect of tuning, and the present invention uses oil pressure stretching-machine to be processed to cover board progress stretch process
Threaded hole is tuned, multi-drawing processing is carried out to cover board according to the thickness of plate and material, stretching-machine is according on drawing die
Station sets different tensile speeds, determines station to a last station from just, from fast to slow, stretching-machine is with regard to this for the speed of stretching
From fast to slow by the plate stretch of the tuning screw thread hole site determined on cover board to corresponding station, until plate is stretched
Oil pressure stretching-machine stops force after to the last one station, the oil pressure used compared with the punch forming originally used, the present invention
Machine then controls the propulsion plate of hydraulic press from fast to slow to corresponding station energy quickly by plate stretch to just station is determined with cylinder
Be not in waste product problem caused by punch forming enough so that plate adapts to the pulling force of hydraulic press application at leisure, and it is of the invention
It it is preferred that the stretch process of three-stage has then taken into account man-hour and yield rate, works well, while hydraulic press finally can also quickly repeatedly
Anti- top, this process can eliminate the stress that metal generates after cover board is stretched, it is ensured that the quality of the tuned window processed,
Slight deformation can be generated by not eliminating the tuning threaded hole of metal stresses, final to influence tuning effect；Edge inside boss of the present invention
Its axis direction is additionally provided with the tuned window to connect with threaded hole, the tuned window compared with threaded hole closer to the cavity of wave filter,
Tuned window is internally provided with cyclic spring sheet metal, and the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw, annular gold
Capacitance is formed between the inner wall and tuning screw of category piece so that is able to introduce the effect of capacity plate antenna on cover board, is reduced tuning spiral shell
The current density of nail and cover board binding site reduces the inter-modulated signal level because of tuning screw and cover board loose contact generation, carries
The intermodulation first-pass yield of high cavity body filter, and it is to depart from threaded hole downwards in the front end of screw to enter tune to use elastic sheet metal
Elastic sheet metal is squeezed during humorous porose area, sheet metal can preferably lock Self-locking screw because the effect of elastic force inwardly squeezes, and examine
The factor of cost and efficiency is considered, further preferably using cyclic spring copper sheet, because copper one side cost is relatively low, another aspect
There is good elasticity.
Description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the schematic diagram of product produced by the present invention；
Fig. 3 is the schematic diagram of present invention manufacture product boss.
In figure：1st, plate；2nd, boss；3rd, threaded hole；4th, tuned window；5th, cover screw hole；6th, cyclic spring sheet metal.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, unless otherwise prescribed with limit, it is necessary to explanation, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be the connection inside mechanical connection or electrical connection or two elements, it can
To be to be connected directly, can also be indirectly connected by intermediary.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
Referring to a kind of manufacturing method of Fig. 1 to Fig. 2 descriptions cavity filter cover board according to embodiments of the present invention, bag
Include following steps：
Step 1：Suitable plate 1 is chosen in the case of selection, considering cost and performance, plate 1 uses aluminium,
Appropriate cut is carried out to plate 1 if the size of plate 1 is improper；
Step 2：Positioning determines the position in tuning threaded hole and cover screw hole 5 according to the actual conditions of filter cavity
It puts；
Step 3：Cover screw hole 5 is processed, after the position in cover screw hole 5 is determined, stamps out cover board using lathe
Screw hole 5；
Step 4：Processing tuning threaded hole, when processing, stretch plate 1 using oil pressure stretching-machine, and when stretching will cover
The one side of the one of plate copper towards aluminium stretches, and stretches the punch-pin that plate uses and is placed on the hydraulic cylinder of hydraulic press, cavity plate is placed in oil pressure
On the pedestal of machine, multiple stations are equipped with according to the drawing die that needs of the thickness of plate and material, stretching start after first by cover board
On the plate Rapid stretching of tuning screw thread hole site that determines to just determining station；
Step 5：Just determine described at station, oil pressure stretching-machine exerts a force perpendicular to lid surface direction, according to the thickness of plate
Degree and material carry out cover board multi-drawing processing, and stretching-machine sets different tensile speeds according to the station on drawing die,
From station is just determined to a last station, from fast to slow, stretching-machine will determine the speed of stretching on cover board from fast to slow with regard to this
The plate stretch of good tuning screw thread hole site is to corresponding station, until oil pressure is drawn after plate is stretched to the last one station
It stretches machine and stops force；
Step 6：By after plate stretch to last station, stretching-machine starts to be slowly returned to original position oil pressure stretching-machine, draws
It is quick anti-secondary at most during return to stretch the processing head of machine, repeatedly instead pushes up post-tensioning machine and returns to original position, oil pressure stretches at this time
Machine processes a boss 2 with cover board one in tuning screw thread hole location, and the center section of boss 2 is hollow；
Step 7：Screw thread, 2 internal whorl of boss are processed inside the inside of boss 2 and cover screw hole 5 using lathe
The diameter for the swivel nut that hole 3 is formed is more than the diameter of the 2 undressed part in inside of boss；
Step 8：The inside of boss 2 it is undressed go out screw thread the annular elastic sheet metal 6 of part installation, the diameter of sheet metal 6
Less than the diameter of filter tuner Self-locking screw.
Preferably, the thickness of the plate 1 is 0.8-3.5mm.
Preferably, the cyclic spring sheet metal 6 is cyclic spring copper sheet.
Preferably, the height that oil pressure stretches the boss 2 of machining is 1-20mm.
Preferably, the swivel nut that the threaded hole that step 7 processes inside boss 2 is formed is applicable in the tune of M5-M10 specifications
Humorous Self-locking screw.
Preferably, oil pressure stretching-machine carries out at least 3 stretch process to the last one station from station is just determined to cover board.
Preferably, oil pressure stretching-machine realizes tensile speed from fast to slow by cylinder.
Preferably, hydraulic press is equipped with hydraulic circuit, anti-top of the hydraulic circuit restrained stretching machine during return.
Compared with traditional filter lid board fabrication method, present invention whole aluminium is used as the material of plate, on the one hand
Be because aluminium is relatively cheap, material cost can be greatly saved to manufacture cover board using aluminium, the quality of another aspect aluminium compared with
Soft, processing is got up easily, also saves processing cost, it is contemplated that the actual demand of present filter tuning tunes Self-locking screw
Specification at present for M5-M10, and accordingly, since the aluminium extensibility that cover board uses is preferable, the thickness of cover board need to be only controlled in 0.8-
3.5mm, cover board is light and does not influence using effect, further saves material cost, and the height of boss can also control
In 1-20mm, it is sufficient to meet the requirement of Self-locking screw；The present invention replaces traditional tuned window and tuning spiral shell using boss
The combination of set is that only plate need to be stretched because processing boss, using lathe with regard to that can be automatically performed tuning screw thread
The processing in hole, without still further by stamping out tuned window and fixed tuning two sets of processes of swivel nut, which is to pass through
What the material of plate processed, the present invention while process is saved will not also waste of materials, and integrally formed boss ten
Divide and consolidate, do not interfere with the effect of tuning, and the present invention uses oil pressure stretching-machine to be processed to cover board progress stretch process
Threaded hole is tuned, multi-drawing processing is carried out to cover board according to the thickness of plate and material, stretching-machine is according on drawing die
Station sets different tensile speeds, determines station to a last station from just, from fast to slow, stretching-machine is with regard to this for the speed of stretching
From fast to slow by the plate stretch of the tuning screw thread hole site determined on cover board to corresponding station, until plate is stretched
Oil pressure stretching-machine stops force after to the last one station, the oil pressure used compared with the punch forming originally used, the present invention
Machine then controls the propulsion plate of hydraulic press from fast to slow to corresponding station energy quickly by plate stretch to just station is determined with cylinder
Be not in waste product problem caused by punch forming enough so that plate adapts to the pulling force of hydraulic press application at leisure, and it is of the invention
It it is preferred that the stretch process of three-stage has then taken into account man-hour and yield rate, works well, while hydraulic press finally can also quickly repeatedly
Anti- top, this process can eliminate the stress that metal generates after cover board is stretched, it is ensured that the quality of the tuned window processed,
Slight deformation can be generated by not eliminating the tuning threaded hole of metal stresses, final to influence tuning effect；Edge inside boss of the present invention
Its axis direction is additionally provided with the tuned window to connect with threaded hole, the tuned window compared with threaded hole closer to the cavity of wave filter,
Tuned window is internally provided with cyclic spring sheet metal, and the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw, annular gold
Capacitance is formed between the inner wall and tuning screw of category piece so that is able to introduce the effect of capacity plate antenna on cover board, is reduced tuning spiral shell
The current density of nail and cover board binding site reduces the inter-modulated signal level because of tuning screw and cover board loose contact generation, carries
The intermodulation first-pass yield of high cavity body filter, and it is to depart from threaded hole downwards in the front end of screw to enter tune to use elastic sheet metal
Elastic sheet metal is squeezed during humorous porose area, sheet metal can preferably lock Self-locking screw because the effect of elastic force inwardly squeezes, and examine
The factor of cost and efficiency is considered, further preferably using cyclic spring copper sheet, because copper one side cost is relatively low, another aspect
There is good elasticity.
In the description of this specification, the description meaning of reference term " one embodiment ", " example " or " some examples " etc.
Refer at least one reality that the present invention is contained in reference to the embodiment or example particular features, structures, materials, or characteristics described
It applies in example or example.In the present specification, schematic expression of the above terms is not necessarily referring to identical embodiment or shows
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiments or example
It combines in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (8)
1. a kind of manufacturing method of filter cover board, which is characterized in that comprise the following steps：
Step 1：Suitable plate is chosen in the case of selection, considering cost and performance, plate uses aluminium, if plate
The size of material is improper, and appropriate cut is carried out to plate；
Step 2：Positioning determines the position in tuning threaded hole and cover screw hole according to the actual conditions of filter cavity；
Step 3：Cover screw hole is processed, after the position in cover screw hole is determined, stamps out cover screw using lathe
Hole；
Step 4：Processing tuning threaded hole, when processing, stretch plate using oil pressure stretching-machine, and stretching plate uses convex
Mould is placed on the hydraulic cylinder of oil pressure stretching-machine, and cavity plate is placed on the pedestal of oil pressure stretching-machine, according to the thickness of plate and material
It needs, drawing die is equipped with multiple stations, stretches first that the plate of the tuning screw thread hole site determined on cover board is fast after starting
Speed, which is stretched to, just determines station；
Step 5：It is described just determine at station, oil pressure stretching-machine perpendicular to lid surface direction exert a force, according to the thickness of plate with
Material carries out cover board multi-drawing processing, and oil pressure stretching-machine sets different tensile speeds according to the station on drawing die,
Station is determined to a last station from just, and from fast to slow, oil pressure stretching-machine from fast to slow will be on cover board with regard to this for the speed of stretching
The plate stretch of the tuning screw thread hole site determined is to corresponding station, until plate is stretched to oil after the last one station
Stretching-machine is pressed to stop force；
Step 6：By after plate stretch to last station, oil pressure stretching-machine starts to be slowly returned to original position oil pressure stretching-machine, oil
The processing head for pressing stretching-machine is quick anti-secondary at most during return, and repeatedly oil pressure stretching-machine returns to original position behind anti-top, at this time
Oil pressure stretching-machine processes a boss with cover board one in tuning screw thread hole location, and the center section of boss is hollow；
Step 7：Using lathe screw thread is processed inside the inside of boss and cover screw hole；
Step 8：Inside boss it is undressed go out screw thread the annular elastic sheet metal of part installation, the diameter of sheet metal is less than filter
Ripple device tunes the diameter of Self-locking screw.
2. manufacturing method according to claim 1, which is characterized in that the thickness for the plate that step 1 is selected is 0.8-
3.5mm。
3. manufacturing method according to claim 1, which is characterized in that the cyclic spring sheet metal is cyclic spring copper
Piece.
4. manufacturing method according to claim 1, which is characterized in that the height that oil pressure stretches the boss of machining is 1-
20mm。
5. manufacturing method according to claim 1, which is characterized in that the threaded hole shape that step 7 processes inside boss
Into swivel nut be applicable in the tuning Self-locking screws of M5-M10 specifications.
6. manufacturing method according to claim 1, which is characterized in that oil pressure stretching-machine is from just determining station to the last one work
Position carries out at least 3 stretch process to cover board.
7. manufacturing method according to claim 1, which is characterized in that oil pressure stretching-machine realizes tensile speed by cylinder
From fast to slow.
8. manufacturing method according to claim 1, which is characterized in that oil pressure stretching-machine is equipped with hydraulic circuit, hydraulic circuit
Control anti-top of the oil pressure stretching-machine during return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785132.4A CN105322270B (en) | 2015-11-17 | 2015-11-17 | A kind of manufacturing method of cavity filter cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785132.4A CN105322270B (en) | 2015-11-17 | 2015-11-17 | A kind of manufacturing method of cavity filter cover board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105322270A CN105322270A (en) | 2016-02-10 |
| CN105322270B true CN105322270B (en) | 2018-05-22 |
Family
ID=55249191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510785132.4A Active CN105322270B (en) | 2015-11-17 | 2015-11-17 | A kind of manufacturing method of cavity filter cover board |
Country Status (1)
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916895A (en) * | 2010-08-20 | 2010-12-15 | 深圳市大富科技股份有限公司 | Cavity filter and manufacturing method thereof |
| CN204632892U (en) * | 2014-12-31 | 2015-09-09 | 深圳市大富科技股份有限公司 | Cavity body filter, duplexer and radio frequency remote equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101094759B1 (en) * | 2009-08-04 | 2011-12-16 | 주식회사 알림테크놀러지 | Method for Combining Cover of Radio Frequency Filter and Radio Frequency Filter Produced by the Method |
| TWI505541B (en) * | 2013-03-29 | 2015-10-21 | Hon Hai Prec Ind Co Ltd | Cavity filter |
-
2015
- 2015-11-17 CN CN201510785132.4A patent/CN105322270B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916895A (en) * | 2010-08-20 | 2010-12-15 | 深圳市大富科技股份有限公司 | Cavity filter and manufacturing method thereof |
| CN204632892U (en) * | 2014-12-31 | 2015-09-09 | 深圳市大富科技股份有限公司 | Cavity body filter, duplexer and radio frequency remote equipment |
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| Publication number | Publication date |
|---|---|
| CN105322270A (en) | 2016-02-10 |
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