JPH0346209B2 - - Google Patents
Info
- Publication number
- JPH0346209B2 JPH0346209B2 JP28438586A JP28438586A JPH0346209B2 JP H0346209 B2 JPH0346209 B2 JP H0346209B2 JP 28438586 A JP28438586 A JP 28438586A JP 28438586 A JP28438586 A JP 28438586A JP H0346209 B2 JPH0346209 B2 JP H0346209B2
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- dies
- gear
- rolling
- elongation
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
- B21H5/027—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls by rolling using reciprocating flat dies, e.g. racks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は一対のラツク状ダイスを用いた歯車
状物の転造加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for rolling a gear-like article using a pair of rack-shaped dies.
（従来の技術）
歯車、セレーシヨン、スプラインなど歯車状物
を転造加工するには、従来から第５図に示すよう
に歯形６を形成したラツク状の一対のダイス１，
２を対称の位置に平行に配置し、円筒形の被加工
物３をダイス間に挾持し、被加工物を第６図に示
すようにライブセンター４，５により両端を支持
したものを用いた。そこで、第５図に矢印で示す
方向にダイス１，２を相対的に移動させると、被
加工物３は強制的に回転させられ外周に歯形が転
造されるのである。(Prior Art) In order to form gear-like objects such as gears, serrations, and splines, a pair of rack-shaped dies 1, each having a tooth profile 6, as shown in FIG.
2 were placed in parallel in symmetrical positions, a cylindrical workpiece 3 was held between the dies, and the workpiece was supported at both ends by live centers 4 and 5 as shown in Fig. 6. . Therefore, when the dies 1 and 2 are moved relative to each other in the direction shown by the arrow in FIG. 5, the workpiece 3 is forcibly rotated and a tooth profile is rolled on the outer periphery.
（発明が解決しようとする問題点）
かかる従来の転造方法では、被加工物の保持力
が必ずしも十分ではなく、また被加工物がその直
径に比して相当に長かつたり、あるいは穴付のも
のである場合には剛性不足のために、被加工物が
ダイスの歯面に対し上下、左右に揺動しながら転
造加工されることになる。このため、第８図イ，
ロに各々示すように被加工物には１歯分転造され
る毎に曲り（Pa）や振れが発生し、ねじれのあ
るものには歯すじにうねりが生ずる。またこれに
伴つて第７図に示すように歯形誤差も大となり、
これがダイスの歯に大きな衝撃荷重となつてかか
り、ダイスに早期に歯欠けが生ずることになる。(Problems to be Solved by the Invention) In such conventional rolling methods, the holding force of the workpiece is not necessarily sufficient, and the workpiece may be considerably long compared to its diameter, or may have holes. If this is the case, the workpiece will be rolled while swinging vertically and horizontally relative to the tooth surface of the die due to insufficient rigidity. For this reason, Figure 8 A,
As shown in (b), bending (Pa) and runout occur in the workpiece every time one tooth is rolled, and waviness occurs in the tooth trace in the case of a twisted workpiece. Additionally, as shown in Figure 7, the tooth profile error also increases.
This results in a large impact load being applied to the teeth of the die, leading to premature tooth chipping of the die.
（問題点を解決するための手段）
この発明は被加工物の一側端を円周方向から均
一に保持し、他側端に被加工物の伸び分を補正す
るリード角をもつ１条の凹溝を形成し、被加工物
の揺動を小さくしたものである。(Means for Solving the Problem) This invention holds one end of the workpiece uniformly from the circumferential direction, and has a single thread at the other end with a lead angle to compensate for the elongation of the workpiece. A concave groove is formed to reduce the swinging of the workpiece.
（作用）
ダイス間に被加工物を挾持し、第２図に示すよ
うにダイス２をＷ方向に相対的に移動させると、
被加工物３は自転して順次Ａ→Ｂ→Ｃと回転して
いくに従つて外周面に歯形が形成される。この
際、被加工物の一端外周には被加工物の伸び分を
補正するリード角（θ）をもつて押え板８に形成
された突条１５により凹溝１７が転造加工され
る。このため被加工物の伸びが助長されると共
に、伸びの分が補正される。またスプリング９に
より付勢されたライブセンタ５は被加工物の伸び
に伴つてスプリングを圧縮して後退する。(Function) When a workpiece is held between the dies and the dies 2 are moved relatively in the W direction as shown in Fig. 2,
As the workpiece 3 rotates on its own axis and sequentially rotates from A to B to C, a tooth profile is formed on the outer peripheral surface. At this time, a concave groove 17 is rolled on the outer periphery of one end of the workpiece by a protrusion 15 formed on the presser plate 8 with a lead angle (θ) that compensates for the elongation of the workpiece. Therefore, the elongation of the workpiece is promoted, and the elongation is corrected. Further, the live center 5 biased by the spring 9 compresses the spring and retreats as the workpiece expands.
さらに、被加工物の他端はセンタ方向及び円周
方向から均一に把持される。かくて被転造物には
曲りが少なくなりねじれのある歯車状物では、歯
筋のうねりのない歯形が形成される。 Further, the other end of the workpiece is gripped uniformly from the center direction and the circumferential direction. In this way, the object to be rolled has less curvature, and in the case of a gear-like object with twist, a tooth profile without waviness of the tooth trace is formed.
（実施例）
次に、本発明に用いた装置の実施例を図面につ
いて説明すると、第１図は本発明に用いた装置の
側面図であつて、被加工物３の一側端はスプリン
グ９で付勢されたライブセンタ５により支持さ
れ、同じく他側端はチヤツク１０により支持され
る。該チヤツク１０はベース１１に立設されたセ
ンター台７に軸受１２を介して回転自在に挿通さ
れたスリーブ１３に把持される。この際チヤツク
は引きねじで締結すると一層効果的である。(Example) Next, an example of the apparatus used in the present invention will be described with reference to the drawings. FIG. 1 is a side view of the apparatus used in the present invention, in which one end of the workpiece 3 is It is supported by a live center 5 which is energized by , and the other end is similarly supported by a chuck 10 . The chuck 10 is held by a sleeve 13 rotatably inserted through a center stand 7 erected on a base 11 via a bearing 12. At this time, it is more effective to fasten the chuck with a draw screw.
一方、相対的に相互に平行に移動しうる各ダイ
ス１，２のライブセンタ５側に第１図に示すよう
に各々押え板８が取付けられ、該押え板の被加工
物との対接面に転造加工中に生ずる被加工物の長
手方向の伸びを助長させるべく、伸びの分を補正
したリード角（θ）をもつ断面円弧形の１条の突
条１５が第２図のように形成される。リード角
（θ）はtan-1△／Dπ（△＝被加工物の長手方向の
伸び量、Ｄ＝他側端部の直径）に合致するように
設定される。 On the other hand, as shown in FIG. 1, a presser plate 8 is attached to the live center 5 side of each of the dies 1 and 2, which can move relatively parallel to each other, and the surface of the presser plate that faces the workpiece In order to promote elongation in the longitudinal direction of the workpiece that occurs during rolling, a single protrusion 15 with an arcuate cross-section and a lead angle (θ) corrected for the elongation is provided as shown in Fig. 2. is formed. The lead angle (θ) is set to match tan −1 Δ/Dπ (Δ=length of elongation of the workpiece in the longitudinal direction, D=diameter of the other end).
さらに第３図に示す他の実施例では第１図のチ
ヤツク１０に代えて被加工物３の反押え板側端側
外周の振れを規制する規制板１６がダイス１，２
の側部に取付けられているものを用いた。 Furthermore, in another embodiment shown in FIG. 3, in place of the chuck 10 in FIG.
The one attached to the side of the was used.
第１図，第３図に示すように被加工物を取付け
ダイス１，２を相対的に移動させると被加工物の
外周面に歯形が転造加工される。同時に被加工物
の一端は加工中に生ずる伸びを見込んで形成され
た上述のリード角（θ）をもつ突条１５によつて
凹溝１７が形成され、伸びが補正される。 As shown in FIGS. 1 and 3, when a workpiece is mounted and the dies 1 and 2 are moved relative to each other, a tooth profile is rolled on the outer peripheral surface of the workpiece. At the same time, a concave groove 17 is formed on one end of the workpiece by a protrusion 15 having the above-mentioned lead angle (θ), which is formed in anticipation of the elongation that occurs during processing, and the elongation is corrected.
（効果）
本発明は上述のように被加工物の一側端をセン
タ方向及び円周方向から均一に把持し、他側端に
被加工物の伸び分を補正するように設定された上
述のリード角（θ）をもつ突条１５によつて凹溝
１７を形成したので第４図に示すように被転造物
には曲りや歯すじのうねりが少くなり、精度の高
い歯車状物が形成された。ちなみに第４図の本発
明により成形された歯車状物の歯すじのうねり
と、従来品による第７図と比較してみると著しく
改善されたことが分る。なおＬは左、Ｒは右側の
フランク面を示す。(Effects) As described above, the present invention grips one end of the workpiece uniformly from the center direction and the circumferential direction, and the other end is set so as to compensate for the elongation of the workpiece. Since the concave groove 17 is formed by the protrusion 15 having a lead angle (θ), as shown in Fig. 4, there is less bending and waviness of the tooth trace in the rolled product, and a gear-like product with high precision is formed. It was done. Incidentally, when comparing the waviness of the tooth trace of the gear-shaped article molded according to the present invention shown in FIG. 4 with that of the conventional product shown in FIG. 7, it can be seen that it has been significantly improved. Note that L indicates the left flank surface and R indicates the right flank surface.
第１図は本発明方法に用いられた装置の部分切
断側面図、第２図は転造加工状態の説明図、第３
図は本発明方法に用いられた他の装置の部分断面
図、第４図は本発明により形成された歯形フラン
クのチヤート、第５図は歯車状物の転造一般に用
いられるダイス、被加工物の概略図、第６図は従
来の方法の説明図、第７図は従来の方法により形
成された歯形フランクのチヤート、第８図イは従
来の方法により転造された歯車状物の側面図、ロ
は歯すじ方向の軸方向ピツチ毎のうねりの説明
図。
１…ダイス、２…ダイス、８…押え板、１５…
突条、１７…凹溝。
Fig. 1 is a partially cutaway side view of the device used in the method of the present invention, Fig. 2 is an explanatory diagram of the rolling state, and Fig. 3
The figure is a partial cross-sectional view of another device used in the method of the present invention, Figure 4 is a chart of tooth profile flanks formed by the present invention, and Figure 5 is a die and workpiece generally used for rolling gear-like objects. 6 is an explanatory diagram of the conventional method, FIG. 7 is a chart of the tooth profile flank formed by the conventional method, and FIG. 8 A is a side view of a gear-shaped product rolled by the conventional method. , B are explanatory diagrams of waviness at each axial pitch in the tooth trace direction. 1... Dice, 2... Dice, 8... Presser plate, 15...
Projection, 17...concave groove.
Claims (1)
称位置に平行に配置し、ダイス間に被加工物を回
転可能に支持してダイス間に挾持し、ダイスを相
対的に移動させて被加工物外周に歯車、セレーシ
ヨン、スプラインなどの歯車状物を転造加工する
に際し、被加工物の一側端を円周方向から均一に
把持し、他側端にtan-1△／Dπなるリード角
（θ）をもつ１条の突条を形成した押し板を配置
して、被加工物に１条の凹溝を形成し、被加工物
の伸びを補正したことを特徴とする歯車状物の転
造方法。 （但し、△＝被加工物の長手方向の伸び量、Ｄ
＝被加工物の他側端部の直径） ２ 被加工物の一側端をチヤツクを用いて円周方
向から均一に把持した特許請求の範囲第１項記載
の歯車状物の転造方法。 ３ 被加工物の一側端外周を規制板により円周方
向から均一に把持した特許請求の範囲第１項記載
の歯車状物の転造方法。[Scope of Claims] 1. A pair of dies each having a tooth profile formed in a simple shape are arranged parallel to each other in symmetrical positions, and a workpiece is rotatably supported between the dies and held between the dies, and the dies are placed relative to each other. When rolling gear-like objects such as gears, serrations, and splines on the outer periphery of a workpiece by moving the workpiece, one end of the workpiece is gripped uniformly from the circumferential direction, and tan -1 △ is applied to the other end. A push plate with a single protrusion having a lead angle (θ) of /Dπ is arranged to form a single concave groove in the workpiece to correct elongation of the workpiece. A method for rolling gear-like objects. (However, △ = amount of elongation in the longitudinal direction of the workpiece, D
=diameter of the other end of the workpiece) 2. The method for rolling a gear-like object according to claim 1, wherein one end of the workpiece is gripped uniformly from the circumferential direction using a chuck. 3. The method for rolling a gear-like article according to claim 1, wherein the outer periphery of one side end of the workpiece is held uniformly from the circumferential direction by a regulating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61284385A JPS63140737A (en) | 1986-12-01 | 1986-12-01 | Form rolling method for tooth wheel like body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61284385A JPS63140737A (en) | 1986-12-01 | 1986-12-01 | Form rolling method for tooth wheel like body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63140737A JPS63140737A (en) | 1988-06-13 |
| JPH0346209B2 true JPH0346209B2 (en) | 1991-07-15 |
Family
ID=17677899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61284385A Granted JPS63140737A (en) | 1986-12-01 | 1986-12-01 | Form rolling method for tooth wheel like body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63140737A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004053501B3 (en) * | 2004-10-28 | 2006-06-01 | Ex-Cell-O Gmbh | Cold rolling machine and cold rolling process |
-
1986
- 1986-12-01 JP JP61284385A patent/JPS63140737A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63140737A (en) | 1988-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3727904A (en) | Concentricity coil for screw threads | |
| JP4804167B2 (en) | Rolling tool and simultaneous rolling method of screw or worm and minority spline | |
| JPH0346209B2 (en) | ||
| JPH0526577B2 (en) | ||
| JP2902101B2 (en) | Simultaneous rolling method and rolling tool of screw and gear similar shape | |
| US3468146A (en) | Bar screw straightener | |
| CN102483087B (en) | Security screw, screw connection device and method of manufacturing security screw | |
| JPS63190919A (en) | Grooved screw part and manufacture thereof | |
| US3353392A (en) | Pitch diameter rounder | |
| SU1348048A1 (en) | Method of producing moulded articles | |
| US4691551A (en) | Rolling method and rolling tools | |
| JPH10315051A (en) | Method for improving fatigue strength of tie bar screw and roller burnishing device | |
| JPH0141419B2 (en) | ||
| JPS6233035A (en) | Odd-shaped screw and its manufacture | |
| SU1237288A1 (en) | Method of cold knurling of splines and machine for its accomplishment | |
| JPH0555211B2 (en) | ||
| JPH07251230A (en) | Ball screw shaft manufacturing method and manufacturing apparatus | |
| JPS6357135B2 (en) | ||
| CN110369750A (en) | A kind of thin-walled brass cam path machining special fixture | |
| SU1680415A1 (en) | Multirow burnisher for flattening and straightening skelps | |
| JPS6016449Y2 (en) | Flat die for rolling | |
| SU846247A1 (en) | Device for two-side finishing and surface-strengthening of sheet parts | |
| JPH08267166A (en) | Roll forming method for shaftlike metallic parts | |
| JPS6160285B2 (en) | ||
| JPS6188937A (en) | Manufacture of tooth surface reference working jig of bevel gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |