JPH01218816A - Surface processing method for liquid crystal resin - Google Patents
Surface processing method for liquid crystal resinInfo
- Publication number
- JPH01218816A JPH01218816A JP63045643A JP4564388A JPH01218816A JP H01218816 A JPH01218816 A JP H01218816A JP 63045643 A JP63045643 A JP 63045643A JP 4564388 A JP4564388 A JP 4564388A JP H01218816 A JPH01218816 A JP H01218816A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- liquid crystal
- cutter
- flow
- crystal resin
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 44
- 239000011347 resin Substances 0.000 title claims abstract description 44
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 12
- 238000003672 processing method Methods 0.000 title description 2
- 238000001746 injection moulding Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 230000003746 surface roughness Effects 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 229920006038 crystalline resin Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007730 finishing process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000001724 microfibril Anatomy 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は射出成形された液晶性樹脂の切削加工に関する
もので、自動車用のスーパーチャージャー用ロータ表面
のブローチ加工等に利用されるものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to cutting processing of injection molded liquid crystalline resin, and is applicable to broaching of the rotor surface of an automobile supercharger. It is something that will be done.
（従来の技術）
自動車用スーパーチャージャー用ロータ（ルーツ型ポン
プ）はＡ１合金の金属表面に液晶性樹脂を射出成形によ
り形成し、その表面をブローチ加工により切削し、更に
ロータの表面を滑らかにするためにパリ取り、パフ仕上
げ等を行って製造している。(Prior technology) The rotor for an automotive supercharger (roots type pump) is made by injection molding liquid crystal resin on the metal surface of A1 alloy, and cutting the surface by broaching to make the rotor surface smooth. For this purpose, we perform deburring, puff finishing, etc. during manufacturing.
（発明が解決しようとする課題）
しかし前記ロータの製法に使用される液晶性樹脂（又は
これを主成分とする樹脂）は、射出成形特金型に充填さ
れるプロセスに従って成形品にその流れを表わす配向が
発生する。(Problem to be Solved by the Invention) However, the liquid crystal resin (or resin containing it as a main component) used in the manufacturing method of the rotor has a flow that flows into the molded product according to the process of filling it into a special injection mold. The representing orientation occurs.
前記樹脂の流れに沿った方向にカッターを喰い込ませる
と、成形品が欠けたり、ケバ立つように表面が荒れて目
的の表面粗度が得られないという問題点がある。If the cutter cuts in the direction along the flow of the resin, there is a problem that the molded product may be chipped or the surface becomes rough and fluffy, making it impossible to obtain the desired surface roughness.
本発明は前記液晶性樹脂を射出成形により形成した製品
の表面をカッター、又はブローチにて切削加工する場合
に前記カッター等が樹脂表面に喰い込むことなく、滑ら
かな表面粗度が得られる加工方法を技術的課題とするも
のである。The present invention provides a processing method in which when the surface of a product formed by injection molding the liquid crystalline resin is cut with a cutter or broach, a smooth surface roughness can be obtained without the cutter etc. digging into the resin surface. is a technical issue.
（課題を解決するための手段）
前記技術的課題を解決する゛ために講じた技術的手段は
次のとおりである。すなわち、液晶性樹脂を主成分とす
る樹脂の射出成形又は押出成形により成形した表面の切
削加工方法に於いて、成形時の樹脂流れと逆方向から樹
脂成形表面を切削するものである。(Means for solving the problem) The technical measures taken to solve the above technical problem are as follows. That is, in a method of cutting a surface molded by injection molding or extrusion molding of a resin whose main component is liquid crystalline resin, the resin molded surface is cut from the direction opposite to the resin flow during molding.
（作用）
前記技術的手段は次のように作用する。すなわち、樹脂
の流れ方向の逆方向からカッターにて切削することによ
り、カッターの喰い込み等の発生もなく表面粗度の良好
な樹脂表面の製造ができるものである。(Operation) The technical means operates as follows. That is, by cutting with a cutter from the direction opposite to the flow direction of the resin, a resin surface with good surface roughness can be produced without the cutter digging in or the like.
（実施例） 以下実施例について説明する。(Example) Examples will be described below.
第１図の１は自動車用スーパーチャージャーロータでＡ
ｆ合金ダイカストよりなるロータ素材２の表面に液晶性
樹脂を主成分とする樹脂４を射出成形により形成したも
のである。1 in Figure 1 is a supercharger rotor for automobiles.
A resin 4 whose main component is liquid crystal resin is formed by injection molding on the surface of a rotor material 2 made of f-alloy die-casting.
第２図は前記液晶性樹脂の成形品の内部組織の拡大図で
、（イ）は押出成形品、（ロ）は射出成形品を示す。FIG. 2 is an enlarged view of the internal structure of the liquid crystal resin molded product, in which (a) shows an extrusion molded product and (b) shows an injection molded product.
１０は外層の真のスキン、１１は内層のスキン、工２は
配向していないコア、１３はマクロフィブリル５μｍ、
１４はフィブリル０．５μｍ、１５は、ミクロフィブリ
ルで樹脂の内部に配向性があることが分かる。10 is the true skin of the outer layer, 11 is the skin of the inner layer, 2 is the unoriented core, 13 is the macrofibril of 5 μm,
It can be seen that 14 is a fibril of 0.5 μm and 15 is a microfibril, which has orientation inside the resin.
第３図はＡ７合金よりなるロータ素材２の表面に前記液
晶樹脂４を射出成形したもので、５は射出成形時のゲー
ト部分で、樹脂の流れは４ａ、４ｂ、４ｃに示すような
配向を持った流れが見られる。Figure 3 shows the liquid crystal resin 4 injection molded onto the surface of the rotor material 2 made of A7 alloy. 5 is the gate part during injection molding, and the flow of the resin is oriented as shown in 4a, 4b, and 4c. You can see the flow.
この場合カッター又はブローチにてＡ方向より樹脂層を
切削すれば、“配向していないコア”の部分が充填時の
流れに沿って配向するために、そこへカッター又はブロ
ーチの刃が喰い込んで、丁度猫の毛を逆撫でしたように
なり表面状態が荒れ、ときには樹脂の一部が欠ける。In this case, if you cut the resin layer from the A direction with a cutter or broach, the "unoriented core" part will be oriented along the flow during filling, so the blade of the cutter or broach will bite into it. , the surface is rough, just like cat's hair has been stroked, and sometimes parts of the resin are chipped.
これをＢ方向よりカッター又はブローチにて切削すれば
、刃は樹脂に喰い込むことなく、極めて滑らかな樹脂表
面が形成できるものであり、６は切削面を示す。If this is cut with a cutter or broach from direction B, the blade will not dig into the resin and an extremely smooth resin surface can be formed, and 6 indicates the cutting surface.
第４図は射出成形に於いて前記ロータ素材の表面に成形
する樹脂の流れを示し、（イ）は樹脂充填前のロータで
、７はゲートの位置を示し４ケ所に設け、（ロ）及び（
ハ）は射出成形中の状況を示し、（ニ）は充填完了後を
示し、（ホ）は成形中の樹脂の流れの拡大図で、４は樹
脂で、８は金型面、９はＡＩ等のインサート面である。Figure 4 shows the flow of resin molded onto the surface of the rotor material during injection molding, (a) shows the rotor before being filled with resin, 7 indicates the positions of gates provided at four locations, (b) and (
C) shows the situation during injection molding, (D) shows the state after filling is completed, and (E) shows an enlarged view of the resin flow during molding, where 4 is the resin, 8 is the mold surface, and 9 is the AI This is the insert surface.
第５図は前記成形中の樹脂の配向のメカニズムを示し、
８は金型、９は金型インサートを示し、４は液晶樹脂の
流れを示し、ｔＩ＋ｊ！＋ ・・・は金型又はインサ
ートの温度を示す。この様に液晶樹脂は配向性を持って
流れるために、樹脂の流れと逆方向より切削すれば表面
の荒れ又は手ばだちの発生はないものである。FIG. 5 shows the mechanism of orientation of the resin during molding,
8 represents the mold, 9 represents the mold insert, 4 represents the flow of liquid crystal resin, and tI+j! +... indicates the temperature of the mold or insert. Since the liquid crystal resin flows in an oriented manner as described above, if the cutting is performed in the direction opposite to the flow of the resin, there will be no surface roughness or roughness.
本発明は次の効果を有する。すなわち、従来技術で切削
していたものは、三次加工としてパリ取り、パフ仕上げ
等の仕上げ工程が必要であるが、本工法の実施によりま
ったくその必要が無く、工程の省略、コスト低減を計る
ことができる。The present invention has the following effects. In other words, when cutting with conventional technology, finishing processes such as deburring and puff finishing are required as tertiary processing, but with the implementation of this method, there is no need for such finishing processes, resulting in the elimination of processes and cost reduction. Can be done.
第３図はロータ素材の断面拡大図、第４図の（イ）〜（
ホ）はロータ素材成形時の樹脂の流れを示す説明図、第
５図は樹脂の配向メカニズムの説明図である。
４・・・液晶性樹脂、６・・・カッター面。Figure 3 is an enlarged cross-sectional view of the rotor material, and Figure 4 (a) to (
E) is an explanatory diagram showing the flow of resin during rotor material molding, and FIG. 5 is an explanatory diagram of the resin orientation mechanism. 4...Liquid crystal resin, 6...Cutter surface.
Claims (1)
形により成形した製品の表面をカッター又はブローチに
て加工する場合に、成形時の樹脂の流れと逆方向から樹
脂表面を切削する液晶性樹脂の表面加工方法。A liquid crystal resin that cuts the resin surface in the opposite direction to the resin flow during molding when processing the surface of a product molded by injection molding or extrusion molding with a resin whose main component is liquid crystal resin using a cutter or broach. surface treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63045643A JPH01218816A (en) | 1988-02-26 | 1988-02-26 | Surface processing method for liquid crystal resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63045643A JPH01218816A (en) | 1988-02-26 | 1988-02-26 | Surface processing method for liquid crystal resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01218816A true JPH01218816A (en) | 1989-09-01 |
Family
ID=12725050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63045643A Pending JPH01218816A (en) | 1988-02-26 | 1988-02-26 | Surface processing method for liquid crystal resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01218816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100092790A1 (en) * | 2008-10-14 | 2010-04-15 | Gm Global Technology Operations, Inc. | Molded or extruded combinations of light metal alloys and high-temperature polymers |
-
1988
- 1988-02-26 JP JP63045643A patent/JPH01218816A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100092790A1 (en) * | 2008-10-14 | 2010-04-15 | Gm Global Technology Operations, Inc. | Molded or extruded combinations of light metal alloys and high-temperature polymers |
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