JPH0735805B2 - Processing method for unequal pitch tightening nut - Google Patents
Processing method for unequal pitch tightening nutInfo
- Publication number
- JPH0735805B2 JPH0735805B2 JP18595690A JP18595690A JPH0735805B2 JP H0735805 B2 JPH0735805 B2 JP H0735805B2 JP 18595690 A JP18595690 A JP 18595690A JP 18595690 A JP18595690 A JP 18595690A JP H0735805 B2 JPH0735805 B2 JP H0735805B2
- Authority
- JP
- Japan
- Prior art keywords
- nut
- processing
- pitch
- tightening nut
- unequal pitch
- 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 - Lifetime
Links
- 238000003672 processing method Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は射出成形機型締付ナット、ボルト・ナット組立
製品等に適用される不等ピッチ締付ナットの加工方法に
関するものである。Description: TECHNICAL FIELD The present invention relates to a method for processing an unequal pitch tightening nut applied to an injection molding machine mold tightening nut, a bolt / nut assembly product, and the like.
（従来の技術） 従来の不等ピッチを有する締付ナットの加工は、各ピッ
チ毎に加工用工具の切削送り量を変化させて行ってい
た。(Prior Art) Conventionally, a tightening nut having an unequal pitch is machined by changing a cutting feed amount of a machining tool for each pitch.
（発明が解決しようとする課題） 従来の不等ピッチを有する締付ナットの加工は、各ピッ
チ毎に加工用工具の切削送り量を変化させて行っていた
ため、等ピッチの締付ナットの加工に比較し、加工工数
及び加工時間が増加する欠点があった。(Problems to be Solved by the Invention) Since the conventional processing of the tightening nut having the unequal pitch is performed by changing the cutting feed amount of the processing tool for each pitch, the processing of the tightening nut of the equal pitch is performed. There is a disadvantage that the processing man-hour and the processing time are increased as compared with the above.
本発明は膨張係数の異なる異種材料を挿入した不等ピッ
チ締付ナットの加工が容易にできる加工方法を提供し、
前記従来の課題を解決しようとするものである。The present invention provides a processing method capable of easily processing an unequal pitch tightening nut in which different materials having different expansion coefficients are inserted,
It is intended to solve the above conventional problems.
（課題を解決するための手段） このため本発明は、ナット本体の内面に膨張係数の異な
る異種材料を使用した複数個のスクリュリテイナーを挿
入し、これを加熱して加工面を膨張させた状態で等ピッ
チのネジを加工した後常温に戻すことにより、不等ピッ
チのネジ部を得るようにしてなるもので、これを課題解
決のための手段とするものである。(Means for Solving the Problem) Therefore, according to the present invention, a plurality of screw retainers made of different materials having different expansion coefficients are inserted into the inner surface of the nut body, and the machined surface is expanded by heating the screw retainers. After processing the screws of equal pitch with each other and then returning to normal temperature, the screw portions of unequal pitch are obtained, and this is a means for solving the problem.
（作用） ナット本体に対して線膨張係数の異なる材料からなるス
クリュリテイナーを単数、若しくは複数個挿入した締結
ナット用素材を使用してナットのネジ部（平行溝）を加
工するに際し、ナット自身を加熱して膨張させる。ナッ
トの加工面にはそれぞれ線膨張係数の異なる材料が使用
されている為、加工面の伸びが一定比率とならない。こ
の状態で等ピッチのネジ部（平行溝部）の加工を行った
後常温に戻すと、各材料の線膨張係数の異なりによる加
工面の伸び（収縮）の差により、不等ピッチのネジ部
（平行溝）を得る事が出来る。(Function) When processing the threaded part (parallel groove) of the nut using the material for the fastening nut in which one or more screw retainers made of materials with different linear expansion coefficients are inserted into the nut body, Heat to expand. Since the material having different linear expansion coefficients is used for the machined surface of the nut, the elongation of the machined surface is not constant. If the threaded portions (parallel groove portions) of equal pitch are processed in this state and then returned to room temperature, the difference in the expansion (contraction) of the machined surface due to the difference in the linear expansion coefficient of each material causes the threaded portion of uneven pitch ( Parallel grooves) can be obtained.
（実施例） 以下本発明を図面の実施例について説明すると、第１図
は本発明に係る締付ナットの断面形状を示す。図におい
てナット本体１に対し、線膨張係数の異なる材料を使用
したスクリュリテイナー2,3を挿入し、これを加工時に
ヒータ４にて（95℃〜100℃）加熱して加工面を膨張さ
せた状態で、等ピッチのネジ（平行溝）を加工した後常
温に戻すと、加工面が常温時（収縮時）において各材料
での膨張による伸び（縮み）代の異なりにより、不等ピ
ッチのネジ（平行溝）を得る事が出来る。(Embodiment) The present invention will be described below with reference to the embodiments of the drawings. FIG. In the figure, the screw retainers 2 and 3 made of materials having different linear expansion coefficients are inserted into the nut body 1 and heated by the heater 4 (95 ° C to 100 ° C) during processing to expand the processed surface. In this state, if screws with equal pitch (parallel grooves) are machined and then returned to room temperature, screws with uneven pitch due to differences in expansion (contraction) due to expansion of each material at room temperature (contraction) (Parallel groove) can be obtained.
第２図は本発明の実施例を示す不等ピッチナットの使用
時におけるネジ山の撓み量を示す説明図で、δ1，δ2は
ネジ山の撓み量を示すが、図面ではδ1＞δ2の場合を示
す。第３図はナットの各ネジ山（平行溝）での荷重分担
（不等ピッチによる効果）を示す説明図である。FIG. 2 is an explanatory view showing the deflection amount of the screw thread when the unequal pitch nut according to the embodiment of the present invention is used. Δ 1 and δ 2 show the deflection amount of the screw thread, but in the drawing, δ 1 >. The case of δ 2 is shown. FIG. 3 is an explanatory diagram showing load sharing (effect of uneven pitch) on each thread (parallel groove) of the nut.
（発明の効果） 本発明による不等ピッチのネジ（平行溝）を有する締付
用ナットの加工方法は、加工時にナット自身を加熱する
事により、等ピッチのネジ（平行溝）の加工で常温時に
不等ピッチのネジ（平行溝）を得ようとするものであ
り、効果としては、 （１）加工が等ピッチ加工で行える為、加工が比較的容
易に出来る。(Effects of the Invention) The method for processing a tightening nut having a screw (parallel groove) of unequal pitch according to the present invention is a method of processing a screw (parallel groove) of equal pitch at room temperature by heating the nut itself during processing. Attempts are sometimes made to obtain screws (parallel grooves) of unequal pitch, and as effects, (1) processing can be performed with equal pitch processing, so processing can be relatively easy.
（２）締付ナット組込時に、ナット自身を加熱してやれ
ば等ピッチのネジ（平行溝）となって容易に組込みが可
能であり、また組込時のナットの加熱温度設定により、
常温時での初期締付力を得る事が出来る。(2) When assembling the tightening nut, if the nut itself is heated, it becomes a screw of equal pitch (parallel groove) and can be easily assembled. Also, by setting the heating temperature of the nut during assembly,
The initial tightening force at room temperature can be obtained.
第１図は本発明の実施例に係る締付ナットの断面形状を
示す斜視図、第２図は本発明に係る不等ピッチナットの
使用時におけるネジ山の撓み量を示す説明図、第３図は
ナットの各ネジ山（平行溝）での荷重分担（不等ピッチ
による効果）を示す説明図である。 図の主要部分の説明 １……ナット本体 ２……スクリュリテイナー ３……スクリュリテイナー ４……ヒータFIG. 1 is a perspective view showing a cross-sectional shape of a tightening nut according to an embodiment of the present invention, and FIG. 2 is an explanatory view showing a bending amount of a screw thread when an unequal pitch nut according to the present invention is used. The figure is an explanatory view showing the load sharing (effect of uneven pitch) on each thread (parallel groove) of the nut. Description of main parts of the figure 1 …… Nut body 2 …… Screw retainer 3 …… Screw retainer 4 …… Heater
Claims (1)
材料を使用した複数個のスクリュリテイナーを挿入し、
これを加熱して加工面を膨張させた状態で等ピッチのネ
ジを加工した後常温に戻すことにより、不等ピッチのネ
ジ部を得ることを特徴とする不等ピッチ締付ナットの加
工方法。1. A plurality of screw retainers using different materials having different expansion coefficients are inserted into the inner surface of a nut body,
A method for processing an unequal pitch tightening nut, characterized in that a threaded portion having an unequal pitch is obtained by processing a screw with an even pitch in a state where the machined surface is expanded by heating this and then returning to normal temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18595690A JPH0735805B2 (en) | 1990-07-13 | 1990-07-13 | Processing method for unequal pitch tightening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18595690A JPH0735805B2 (en) | 1990-07-13 | 1990-07-13 | Processing method for unequal pitch tightening nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0473413A JPH0473413A (en) | 1992-03-09 |
| JPH0735805B2 true JPH0735805B2 (en) | 1995-04-19 |
Family
ID=16179820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18595690A Expired - Lifetime JPH0735805B2 (en) | 1990-07-13 | 1990-07-13 | Processing method for unequal pitch tightening nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735805B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3019232B2 (en) * | 1992-03-06 | 2000-03-13 | キヤノン株式会社 | Magneto-optical disk drive |
-
1990
- 1990-07-13 JP JP18595690A patent/JPH0735805B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0473413A (en) | 1992-03-09 |
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