JPS5951163B2 - Antenna reflector and its manufacturing method - Google Patents
Antenna reflector and its manufacturing methodInfo
- Publication number
- JPS5951163B2 JPS5951163B2 JP49127297A JP12729774A JPS5951163B2 JP S5951163 B2 JPS5951163 B2 JP S5951163B2 JP 49127297 A JP49127297 A JP 49127297A JP 12729774 A JP12729774 A JP 12729774A JP S5951163 B2 JPS5951163 B2 JP S5951163B2
- Authority
- JP
- Japan
- Prior art keywords
- curved surface
- antenna reflector
- disc
- outer frame
- manufacturing
- 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
Links
Landscapes
- Aerials With Secondary Devices (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は回転曲面のアンテナ反射鏡の製造方法に関す
るものであって、回転曲面のアンテナ反射鏡をその電気
的特性を損うことなく、近似回転曲面として簡単容易に
作れるようにすると共に、回転曲面を形成する型の修正
が容易にでき、１個の型で種々の形式の回転曲面を作れ
るようにするのがその目的で゛ある。[Detailed Description of the Invention] The present invention relates to a method for manufacturing an antenna reflector having a rotating curved surface, which allows the antenna reflector having a rotating curved surface to be easily and easily manufactured as an approximate rotating curved surface without impairing its electrical characteristics. The purpose is to make it possible to easily modify the mold for forming the curved surface of revolution, and to make it possible to create various types of curved surfaces of revolution with one mold.
従来回転曲面の反射面を備えたアンテナ反射鏡を作るに
は、回転曲面の型に材料を当てて回転させヘラを押し当
てて成形する絞り加工や、回転曲面のオ型とメ型の間に
材料を挿入しプレスで加圧成形するプレス加工や回転曲
面の型に添わせて材料を治具又はハンマーでたたき変形
させ押し当て成形するたたき出し加工などによっている
。Conventionally, to make an antenna reflector with a rotating curved reflecting surface, there is a drawing process in which the material is applied to a mold with a rotating curved surface, rotated, and a spatula is pressed to form the material, or a material is placed between the O-type and the ME-type of the rotating curved surface. This is done by pressing, in which the material is inserted and pressure-formed using a press, or by pounding, in which the material is deformed by being hit with a jig or hammer along with a rotating curved mold, and then pressed against it.
しかしはがら、いづれも材料のはねかえり等による初期
の型の修正に何回か切削加工が必要で工費が高くなり、
文型の完成までに時間が掛る。However, in both cases, cutting is required several times to correct the initial mold due to material splashing, etc., which increases the manufacturing cost.
It takes time to complete the sentence pattern.
又、１個の型で１種類の回転曲面の反射面しか加工でき
ない。Moreover, only one type of rotating curved reflective surface can be processed with one mold.
文型によって製作精度が限定され製品の精度は型の精度
よりよくならない。Manufacturing accuracy is limited by the pattern of the text, and the accuracy of the product is not better than the accuracy of the mold.
更に材料の肉厚や、材質の違いによりはねかえりが異る
ので型を流用できないなどの欠点がある。Furthermore, there are drawbacks such as the inability to reuse molds because the bounce differs depending on the thickness of the material and the quality of the material.
この発明はこのような難点を解消し、回転曲面のアンテ
ナ反射鏡をその電気的特性を損うことなく、簡単容易に
作れるようにすると共に、回転曲面を形成する型の修正
が容易にでき、１個の型で種々の形式の回転曲面を作れ
るようにしたものである。The present invention solves these difficulties and makes it possible to easily manufacture an antenna reflector with a rotating curved surface without damaging its electrical characteristics, and also allows easy modification of the mold for forming the rotating curved surface. It is possible to create various types of rotating curved surfaces with one mold.
この発明を実施したアンテナ反射鏡の製造方法の一例を
図面について説明する。An example of a method for manufacturing an antenna reflector embodying the present invention will be described with reference to the drawings.
基板１上に中心から外方に向って順次その内径が増大す
ると共にその基板１からの高さが減少するような複数個
の中空円筒２を同心的に配置するそしてこれらの中空円
筒２の先端２′の包絡面３が所定の回転曲面を形成する
。A plurality of hollow cylinders 2 are arranged concentrically on a substrate 1 so that their inner diameters gradually increase outward from the center and their heights from the substrate 1 decrease, and the tips of these hollow cylinders 2 are arranged concentrically. The envelope surface 3 of 2' forms a predetermined rotational curved surface.
これらの中空円筒２群の上方から円周が外枠４に保持さ
れた円板状材料５を中空円筒２群に対して液圧、ねじ締
付けなどの加圧装置によって外枠４を中空円筒群のある
側に移動させて押圧してこの円板状材料に近似的回転曲
面を形成させてアンテナ反射鏡を作る。A disk-shaped material 5 whose circumference is held by the outer frame 4 is applied from above the two groups of hollow cylinders to the two groups of hollow cylinders using a pressurizing device such as hydraulic pressure or screw tightening. An antenna reflector is created by moving the material to a certain side and pressing it to form an approximate rotational curved surface on this disc-shaped material.
この場合、円板状材料は外枠の保持張力によって中空円
筒の先端のあたる部分は塑性変形をうけ折れ曲がること
になる。In this case, the portion of the disc-shaped material that is in contact with the tip of the hollow cylinder undergoes plastic deformation and bends due to the holding tension of the outer frame.
この時、室温では硬くて加工困難な場合は、例えばプラ
スチック、アルミニウムなどは適当に加熱して加工する
。At this time, if the material is hard and difficult to process at room temperature, for example, plastic, aluminum, etc. may be processed by heating appropriately.
この発明の中空円筒２群の先端２′の包絡面は所定の回
転曲面に近似している。The envelope surface of the tips 2' of the two groups of hollow cylinders of the present invention approximates a predetermined rotational curved surface.
そこで沖空円筒２の数を増減することにより、使用する
周波数帯で許容しうる誤差内に納まるような近似回転曲
面にすることができる。Therefore, by increasing or decreasing the number of offshore cylinders 2, it is possible to obtain an approximate rotating curved surface that falls within an allowable error in the frequency band used.
例えば開口角６０度、直径０．５ｍ、１２ＧＨ７の回転
放物面で、面積度ＲＭＳ±０．５ｍｍが必要な時は、中
空円筒２の数を５個にすることにより近似による誤差は
±０．３６となり、充分近似させることができる。For example, if a paraboloid of revolution with an aperture angle of 60 degrees, a diameter of 0.5 m, and a 12GH7 is required to have an area RMS of ±0.5 mm, the error due to approximation can be reduced to ±0 by increasing the number of hollow cylinders 2 to 5. .36, which is a sufficient approximation.
これらの中空円筒２はそれぞれねじを使ったりスペーサ
を挿入したりして、中空円筒２を上下に移動調整して基
板１からの高さを変え固定できるようにする。These hollow cylinders 2 are adjusted by moving up and down by using screws or inserting spacers, respectively, so that the height from the substrate 1 can be changed and fixed.
この発明によれば回転曲面のアンテナ反射鏡をその電気
的特性を損うことなく、簡単容易に作ることができる。According to the present invention, an antenna reflector having a rotating curved surface can be easily manufactured without impairing its electrical characteristics.
この発明では、初期の材料のはねかえり等の型の修正が
、中空円筒２の高さを調整することなどで容易にできる
。In this invention, corrections to the initial shape such as material rebound can be easily made by adjusting the height of the hollow cylinder 2.
又、中空円筒２の数を増減することによって反射鏡面の
外径を自由に変えられる。Furthermore, by increasing or decreasing the number of hollow cylinders 2, the outer diameter of the reflecting mirror surface can be freely changed.
この発明によれば中空円筒２の数及びその高さを変える
ことにより、１個の型で種々の形式の回転曲面のアンテ
ナ反射鏡を作ることができる。According to this invention, by changing the number of hollow cylinders 2 and their heights, antenna reflectors with various types of rotating curved surfaces can be manufactured with one mold.
この発明では、加工中の材料は従来の加工方法に較べて
、中空円筒２の先端２′部分に当る所だけの局部的塑性
変形を受ける。In this invention, the material being processed undergoes local plastic deformation only at the tip 2' of the hollow cylinder 2, compared to conventional processing methods.
従って加工後の材料のはねかえりは非常に小さくなり、
型の設計や加工が非常に容易になる等の効果が大きい。Therefore, the rebound of the material after processing becomes very small.
This has great effects, such as making mold design and processing much easier.
本発明の方法では下型だけで上型を使わずに加工できる
ので型の設計製作が簡単であるばかりでなく加工設備と
しても簡易なもので製造可能である。In the method of the present invention, processing can be performed using only a lower mold without using an upper mold, so that not only is it easy to design and manufacture the mold, but it can also be manufactured using simple processing equipment.
図面はこの発明を実施したアンテナ反射鏡及びその製造
方法を説明するための正面断面図である。
１は基板、２は中空円筒、３は包絡面、４は外枠、５は
円板状材料を示す。The drawing is a front sectional view for explaining an antenna reflector embodying the present invention and a method of manufacturing the same. 1 is a substrate, 2 is a hollow cylinder, 3 is an envelope surface, 4 is an outer frame, and 5 is a disc-shaped material.
Claims (1)
径が増大すると共にその基板からの高さが減少するよう
な複数個の中空円筒を同心的に配置し、これら複数個の
中空円筒の上方先端を結ぶ′包絡面が所定の回転曲面を
形成するようにし、これら中空円筒群の上方より円周を
外枠に保持された円板状材料を該外枠を上記中空円筒群
のある側に移動させることによって該中空円筒の先端部
に押圧し、円板状材料の外枠による保持張力を利用して
円板状材料を塑性変形させて近似的回転曲面を形成する
ことを特徴とするアンテナ反射鏡の製造方法。1. A plurality of hollow cylinders are arranged concentrically on a substrate so that the outer diameter and inner diameter thereof sequentially increase outward from the center and the height from the substrate decreases, and these hollow cylinders are The envelope surface connecting the upper tips forms a predetermined rotational curved surface, and a disc-shaped material whose circumference is held in an outer frame is placed from above the hollow cylinder group, and the outer frame is inserted into the hollow cylinder group. The material is pressed against the tip of the hollow cylinder by moving it to the side, and the disc-shaped material is plastically deformed using the holding tension by the outer frame of the disc-shaped material to form an approximate rotational curved surface. A method for manufacturing an antenna reflector.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49127297A JPS5951163B2 (en) | 1974-11-05 | 1974-11-05 | Antenna reflector and its manufacturing method |
| IN2056/CAL/1975A IN144122B (en) | 1974-11-05 | 1975-10-25 | |
| GB44367/75A GB1496269A (en) | 1974-11-05 | 1975-10-28 | Manufacture of reflectors for antennas |
| US05/626,752 US4021817A (en) | 1974-11-05 | 1975-10-29 | Method of manufacture of antenna reflector having a predetermined curved surface |
| FR7533701A FR2290263A1 (en) | 1974-11-05 | 1975-11-04 | METHOD OF FORMING AN ANTENNA REFLECTOR HAVING A CURVED SURFACE |
| BR7507231A BR7507231A (en) | 1974-11-05 | 1975-11-04 | PROCESS OF FORMING AN ANTENNA REFLECTOR HAVING A PREDETERMINATED CURVE SURFACE, AND THE ANTENNA REFLECTOR |
| CA75238953A CA1048254A (en) | 1974-11-05 | 1975-11-04 | Die forming of concave antenna reflectors |
| DE2549653A DE2549653C3 (en) | 1974-11-05 | 1975-11-05 | Device for pulling an antenna reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49127297A JPS5951163B2 (en) | 1974-11-05 | 1974-11-05 | Antenna reflector and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5152761A JPS5152761A (en) | 1976-05-10 |
| JPS5951163B2 true JPS5951163B2 (en) | 1984-12-12 |
Family
ID=14956466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49127297A Expired JPS5951163B2 (en) | 1974-11-05 | 1974-11-05 | Antenna reflector and its manufacturing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5951163B2 (en) |
| BR (1) | BR7507231A (en) |
-
1974
- 1974-11-05 JP JP49127297A patent/JPS5951163B2/en not_active Expired
-
1975
- 1975-11-04 BR BR7507231A patent/BR7507231A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7507231A (en) | 1976-08-03 |
| JPS5152761A (en) | 1976-05-10 |
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