JPH01306013A - Drawing method for tube with excellent inner surface in accuracy - Google Patents
Drawing method for tube with excellent inner surface in accuracyInfo
- Publication number
- JPH01306013A JPH01306013A JP13686288A JP13686288A JPH01306013A JP H01306013 A JPH01306013 A JP H01306013A JP 13686288 A JP13686288 A JP 13686288A JP 13686288 A JP13686288 A JP 13686288A JP H01306013 A JPH01306013 A JP H01306013A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- tools
- cooling
- cooling medium
- plug
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000002826 coolant Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000011261 inert gas Substances 0.000 claims abstract description 3
- 239000000314 lubricant Substances 0.000 claims abstract description 3
- 230000008016 vaporization Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 18
- 239000010687 lubricating oil Substances 0.000 abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 8
- 230000003746 surface roughness Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Landscapes
- Metal Extraction Processes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、金属材料の引抜き加工方法に関するものであ
るゆ
［従来の技術］
従来の引抜き加工方法では、加工時に、被加工材と引抜
き工具との接触面に、強制的に潤滑油を挿入することに
より、摩擦を軽減し、引抜き力を減少させる方法がとら
れている。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for drawing metal materials. [Prior Art] In the conventional drawing method, the workpiece and the drawing tool are separated during processing. A method is used to reduce friction and pull-out force by forcibly inserting lubricating oil into the contact surface.
しかし、連続して引抜き加工を行なうと、加工熱により
、潤滑油及び引抜き工具の温度が上昇し、部分的なピッ
クアップ（焼付）の発生による面粗度の低下や工具寸法
の熱変化による寸法精度のばらつきが発生していた。However, when drawing is performed continuously, the temperature of the lubricating oil and the drawing tool rises due to processing heat, resulting in a decrease in surface roughness due to local pickup (seizure) and dimensional accuracy due to thermal changes in tool dimensions. There was some variation.
そのため、潤滑油タンク内に冷却装置を組込み、あらか
じめ冷却された潤滑油を用いることにより温度上昇を軽
減する方法が試みられたが、引抜き加工時に発生する加
工熱の影響を排除するには不十分であった。Therefore, attempts have been made to reduce the temperature rise by incorporating a cooling device into the lubricating oil tank and using pre-cooled lubricating oil, but this is insufficient to eliminate the effects of processing heat generated during the drawing process. Met.
［発明が解決しようとする課題］
本発明はこのような従来の問題点に鑑みてなされたもの
であり、潤滑油及び引抜き工具の温度上昇を抑制でき、
従ってピックアップの発生や工具寸法の熱変化を少なく
することのできる引抜き加工方法を提供することを目的
とするものである。[Problems to be Solved by the Invention] The present invention has been made in view of such conventional problems, and it is possible to suppress the temperature rise of the lubricating oil and the extraction tool,
Therefore, it is an object of the present invention to provide a drawing method that can reduce the occurrence of pickup and thermal changes in tool dimensions.
［課題を解決す今ための手段］
本発明は、引抜き加工する際、液体状態の冷却媒体によ
り潤滑油および引抜き工具を冷却し、さらに前記冷却媒
体を気化させて生じた不活性ガスにより引抜き工具を冷
却することを特徴とする引抜き加工方法に要旨が存在す
る。[Means for Solving the Problems Now] The present invention cools the lubricating oil and the drawing tool with a cooling medium in a liquid state during drawing processing, and further cools the drawing tool with an inert gas generated by vaporizing the cooling medium. There is a gist in a drawing method characterized by cooling.
［作用］
本発明の引抜き加工方法によれば潤滑油及び引抜き工具
の温度上昇を、従来に比べて大幅に低減することができ
るので、ピックアップの発生や工具寸法の熱変化による
寸法精度のばらつきを、非常に少なくすることができる
。[Function] According to the drawing method of the present invention, the temperature rise of the lubricating oil and the drawing tool can be significantly reduced compared to the conventional method, so variations in dimensional accuracy due to occurrence of pickup and thermal changes in tool dimensions can be reduced. , can be made very small.
［実施例］
第１図は本発明の引抜き加工方法を説明するための図で
ある。図中、１は被加工物である金属管、２はプラグ、
３はプラグ２の芯金、４はダイス、５はブレーキダイス
、６は接続部、７はスリーブ、８はダイプレート、９は
プラグポケット部である。芯金３は中空になっており、
潤滑油の導管としての機能を兼ね備えている。また内部
には液体窒素（以下Ｌ−Ｎ２とする）を通す窒素導管１
０を具備している。[Example] FIG. 1 is a diagram for explaining the drawing method of the present invention. In the figure, 1 is a metal pipe as a workpiece, 2 is a plug,
3 is a core metal of the plug 2, 4 is a die, 5 is a brake die, 6 is a connecting portion, 7 is a sleeve, 8 is a die plate, and 9 is a plug pocket portion. The core metal 3 is hollow,
It also functions as a conduit for lubricating oil. Also inside is a nitrogen conduit 1 that passes liquid nitrogen (hereinafter referred to as L-N2).
0.
第２図は、プラグ２の詳細図である。FIG. 2 is a detailed view of the plug 2.
潤滑油は、芯金３の内部より、プラグ２に設けられた開
口部を介してプラグポケット部９に供給されるが、この
芯金３を通る際に窒素導管１０内のＬ−Ｎ２により冷却
される。また、冷却された潤滑油により、引抜き工具も
冷却される。Lubricating oil is supplied from inside the core metal 3 to the plug pocket 9 through an opening provided in the plug 2, but as it passes through the core metal 3, it is cooled by L-N2 in the nitrogen conduit 10. be done. Moreover, the extraction tool is also cooled by the cooled lubricating oil.
一方、窒素導管１０もプラグポケット部９へ通じており
、Ｌ−Ｎ２はこのプラグポケット部９内でガス化する。On the other hand, the nitrogen conduit 10 also leads to the plug pocket 9, in which L-N2 is gasified.
ガス化した窒素は、引抜き工具を冷却する効果を有する
。The gasified nitrogen has the effect of cooling the extraction tool.
第３図は、ダイス４の詳細図である。潤滑油はダイスポ
ケット内にも供給されるが、ここにおいても上述の方法
と同じ方法により、潤滑油および引抜き工具が冷却され
る。FIG. 3 is a detailed view of the die 4. Lubricating oil is also supplied into the die pocket, where the lubricating oil and the drawing tool are cooled in the same manner as described above.
次に、本発明の引抜き加工方法により加工されたアルミ
部材の内面粗度および加工精度の測定を行なった。使用
したアルミ部材は、材質はＡ６０６３ＴＤ−Ｔａ２であ
り、加工前の寸法は外径が３２ｍｍ、内径が２７ｍｍ、
長さが１０００ｍｍである。また加工後の寸法は、外径
が３０ｍｍ。Next, the inner surface roughness and processing accuracy of the aluminum member processed by the drawing method of the present invention were measured. The material of the aluminum member used is A6063TD-Ta2, and the dimensions before processing are 32 mm in outer diameter, 27 mm in inner diameter,
The length is 1000mm. The dimensions after processing are 30mm in outer diameter.
内径が２６ｍｍｂ長さが１０００ｍｍである。The inner diameter is 26 mm and the length is 1000 mm.
その結果、内面粗度はＲｘＯ，３μｍ、内径真円度は１
０μｍ以下、長手方向内径ばらつきは１０μｍ以下であ
った。内面粗度の測定結果を第４図に示す。As a result, the inner surface roughness was RxO, 3 μm, and the inner diameter roundness was 1
The inner diameter variation in the longitudinal direction was 10 μm or less. Figure 4 shows the measurement results of the inner surface roughness.
これら測定結果から明らかな様に、本発明の引抜き加工
方法によれば、内面粗度および加工寸法精度のばらつき
を非常に小さくする゛ことができる。As is clear from these measurement results, according to the drawing method of the present invention, variations in inner surface roughness and processing dimensional accuracy can be extremely reduced.
［発明の効果］
以上説明した様に、本発明によれば、潤滑油および引抜
き工具の温度上昇を防ぐことができるので、ピックアッ
プの発生による面粗度の上昇や工具寸法の熱変化による
寸法精度のばらつきを防止することができる。[Effects of the Invention] As explained above, according to the present invention, it is possible to prevent the temperature rise of the lubricating oil and the extraction tool, thereby increasing the surface roughness due to occurrence of pickup and reducing dimensional accuracy due to thermal changes in tool dimensions. It is possible to prevent variations in
第１図は本発明を説明するための図、第２図はプラグの
詳細図、第３図はダイスの詳細図、第４図は本発明の引
抜き加工方法による加工部材の内面粗度の測定結果を示
す図である。
１・・・被加工部材、２・・・プラグ、３・・・プラグ
の芯金、４・・・ダイス、５・・・ブレーキダイス、６
ａ、６ｂ・・・接続部、７・・・スリーブ、８・・・ダ
イスプレート、９・・・プラグポケット、１０・・・窒
素導管、１１・・・潤滑剤挿入口、１２・・・窒素挿入
口、１３・・・カップラー、１４・・・ダイスホルダー
、１５・・・ダイスポケット
〆学Fig. 1 is a diagram for explaining the present invention, Fig. 2 is a detailed view of a plug, Fig. 3 is a detailed view of a die, and Fig. 4 is a measurement of the inner surface roughness of a workpiece by the drawing method of the present invention. It is a figure showing a result. DESCRIPTION OF SYMBOLS 1...Workpiece member, 2...Plug, 3...Plug core metal, 4...Dice, 5...Brake die, 6
a, 6b...Connection part, 7...Sleeve, 8...Dice plate, 9...Plug pocket, 10...Nitrogen conduit, 11...Lubricant insertion port, 12...Nitrogen Insertion slot, 13...Coupler, 14...Dice holder, 15...Dice pocket closure
Claims (1)
潤滑剤および引抜き工具を冷却し、さらに前記冷却媒体
を気化させて生じた不活性ガスにより前記引抜き工具を
冷却することを特徴とする引抜き加工方法。A drawing process characterized in that when drawing a metal tube or the like, a lubricant and a drawing tool are cooled by a liquid cooling medium, and the drawing tool is further cooled by an inert gas generated by vaporizing the cooling medium. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13686288A JPH01306013A (en) | 1988-06-03 | 1988-06-03 | Drawing method for tube with excellent inner surface in accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13686288A JPH01306013A (en) | 1988-06-03 | 1988-06-03 | Drawing method for tube with excellent inner surface in accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01306013A true JPH01306013A (en) | 1989-12-11 |
Family
ID=15185256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13686288A Pending JPH01306013A (en) | 1988-06-03 | 1988-06-03 | Drawing method for tube with excellent inner surface in accuracy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01306013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0743110A1 (en) * | 1995-05-15 | 1996-11-20 | Linde Aktiengesellschaft | Method and device for the forming of cold impact-resistant metallic materials |
| US20180354087A1 (en) * | 2015-06-25 | 2018-12-13 | Accu-Svenska Ab | Lubrication and cooling device and a method for lubricating and cooling a work piece |
| DE102017119192A1 (en) * | 2017-08-22 | 2019-02-28 | Admantec Ag | Device for producing pipes and method for producing a die and a mandrel |
-
1988
- 1988-06-03 JP JP13686288A patent/JPH01306013A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0743110A1 (en) * | 1995-05-15 | 1996-11-20 | Linde Aktiengesellschaft | Method and device for the forming of cold impact-resistant metallic materials |
| US20180354087A1 (en) * | 2015-06-25 | 2018-12-13 | Accu-Svenska Ab | Lubrication and cooling device and a method for lubricating and cooling a work piece |
| DE102017119192A1 (en) * | 2017-08-22 | 2019-02-28 | Admantec Ag | Device for producing pipes and method for producing a die and a mandrel |
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