JPS5827014B2 - Manufacturing method of tulip part of constant velocity joint - Google Patents
Manufacturing method of tulip part of constant velocity jointInfo
- Publication number
- JPS5827014B2 JPS5827014B2 JP52152099A JP15209977A JPS5827014B2 JP S5827014 B2 JPS5827014 B2 JP S5827014B2 JP 52152099 A JP52152099 A JP 52152099A JP 15209977 A JP15209977 A JP 15209977A JP S5827014 B2 JPS5827014 B2 JP S5827014B2
- Authority
- JP
- Japan
- Prior art keywords
- manufacturing
- tulip
- crude product
- punch
- constant velocity
- 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
- 241000722921 Tulipa gesneriana Species 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000012043 crude product Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
- B21K1/765—Outer elements of coupling members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2055—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
この発明は、自動車に使用される等速ジヨイントのチュ
ーリップ部の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a tulip portion of a constant velocity joint used in an automobile.
等速ジヨイントのチューリップ部は、従来カップ形状に
熱間加工された粗材の周壁を７ライス加工などによって
、切削し、これによりローラ転動溝を形成していたが、
この方法は、削り代が多く、材料の無駄が多いとともに
、転勤溝の加工に時間を要し、製造コストが高くなると
いう不都合があった。Conventionally, the tulip part of a constant velocity joint was made by cutting the peripheral wall of a rough material that had been hot-processed into a cup shape using 7-rice machining, thereby forming a roller rolling groove.
This method has disadvantages in that it requires a large amount of machining, wastes a lot of material, takes time to process the transfer groove, and increases manufacturing costs.
これに対して、チューリップ部を鍛造することが考えら
れるが、この場合、通常、転勤溝の先端は、カップの底
部よりもさらに深い位置にあるために、ポンチが外側に
広がる力を受け、したがって製造がむずかしくポンチの
寿命が短くなるという不都合が考えられる。On the other hand, it is possible to forge the tulip part, but in this case, the tip of the transfer groove is usually located at a deeper position than the bottom of the cup, so the punch is subjected to a force that spreads outward, and thus This may be disadvantageous in that it is difficult to manufacture and the life of the punch is shortened.
この発明は、上記従来の不都合を解消すべくなされたも
のであって、材料の無駄が少なく、短時間で製造でき、
かつ、ポンチの変形が少ない等速ジヨイントのチューリ
ップ部の製造方法を提供することを目的とする。This invention was made to solve the above-mentioned conventional disadvantages, and it can be manufactured in a short time with less waste of materials,
Another object of the present invention is to provide a method for manufacturing a tulip portion of a constant velocity joint in which the punch is less deformed.
この発明により、等速ジヨイントのチューリップ部の製
造方法は、半径方向に複数の突出部を備えるとともに該
突出部の軸方向先端がポンチ中央部よりも軸方向に突出
した形状のポンチと、このポンチの外径よりも大きい内
径のダイスと、により前記突出部により形成される穴の
外周に薄肉部を残した状態で熱間鍛造により粗製品を製
造する工程と、この粗製品の前記薄肉部を除去する工程
とを有してなり、薄肉部によりポンチの外側への変形を
防止し、かつ薄肉部を除去するのみで完成品とすること
ができるようにしたものである。According to the present invention, a method for manufacturing a tulip portion of a constant velocity joint includes a punch having a plurality of protrusions in the radial direction and an axial tip of the protrusions protruding further in the axial direction than the center of the punch; a die having an inner diameter larger than the outer diameter of the die; and a step of manufacturing a crude product by hot forging with a thin wall portion remaining on the outer periphery of the hole formed by the protruding portion; The thin wall portion prevents outward deformation of the punch, and the finished product can be obtained by simply removing the thin wall portion.
以下本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係る等速ジヨイントのチューリップ部
の粗製品を製造するためのグイセットを示す断面図、第
２図は、第１図の■−■線に沿う断面図、第３図は同ダ
イセットにより製造される粗製品の断面図、第４図は第
３図の左側面図であるＯ
図に示されるようにダイセット１のダイス２は上部が、
大径部２Ａとされるとともに、下部は、この大径部２Ａ
から滑らかに変形して、小径部２Ｂとされている。Fig. 1 is a sectional view showing a guiset for producing a crude product of the tulip part of a constant velocity joint according to the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is FIG. 4 is a cross-sectional view of the crude product manufactured by the same die set, and FIG. 4 is a left side view of FIG. 3. As shown in FIG.
The large diameter part 2A is formed, and the lower part is the large diameter part 2A.
The small diameter portion 2B is smoothly deformed from the small diameter portion 2B.
一方、このダイス２内に上方から挿入されるポンチ３は
、その先端から軸方向に長くかつ半径方向に複数の突出
部４をそなえている。On the other hand, the punch 3 inserted into the die 2 from above is provided with a plurality of protrusions 4 that are long in the axial direction and extend in the radial direction from its tip.
この突出部４は、１２０度の等角度間隔に３個形成され
、その先端はポンチ３の中央部よりも前方に突出した形
状とされている。Three protrusions 4 are formed at equal angular intervals of 120 degrees, and their tips are shaped to protrude forward from the center of the punch 3.
該突出部４の周方向の厚さは、等速ジヨイントにむける
ローラ転動溝を形成するようになっている。The circumferential thickness of the protrusion 4 is such that it forms a roller rolling groove toward the constant velocity joint.
また、前記ポンチ３の外周すなわち突出部４の外周部分
にむける半径は、前記ダイス２の大径部２人にむける内
径よりも一定量小さくされている。Further, the radius toward the outer periphery of the punch 3, that is, the outer periphery of the protruding portion 4, is made smaller by a certain amount than the inner diameter of the large diameter portion of the die 2 toward the two people.
図の符号５はストリッパーを示す。Reference numeral 5 in the figure indicates a stripper.
図に示されるように、粗材６をダイス２内に釦き、第１
図に示されるように、突出部４の先端４Ａがダイス２の
大径部２Ａから小径部２Ｂに至る斜面２Ｃに前記大径部
２人の内径と突出部４の外径との差に等しい距離だけ接
近した位置１でポンチ３を下降させる。As shown in the figure, the rough material 6 is buttoned into the die 2, and the first
As shown in the figure, the tip 4A of the protrusion 4 is on the slope 2C extending from the large diameter part 2A to the small diameter part 2B of the die 2, which is equal to the difference between the inner diameter of the two large diameter parts and the outer diameter of the protrusion 4. The punch 3 is lowered at position 1, which is just a distance away.
したがって、この工程で、製造される粗製品８は、第３
図ち・よび第４図に示されるような形状となり転勤溝９
の外周には、薄肉部１０が残され、この薄肉部１０は転
勤溝９の間の花弁部１１を連結していることになる。Therefore, in this step, the crude product 8 manufactured is
The transfer groove 9 becomes shaped as shown in Figures 1 and 4.
A thin wall portion 10 is left on the outer periphery, and this thin wall portion 10 connects the petal portions 11 between the transfer grooves 9.
したがって、前記粗製品８の製造過程において薄肉部１
０はポンチ３の突出部４が内側から圧力によって、外方
に変形されるのを防止するとともに、この突出部４が、
ダイス２に直接接触することを防止するものである。Therefore, in the manufacturing process of the crude product 8, the thin part 1
0 prevents the protrusion 4 of the punch 3 from being deformed outward by pressure from the inside, and also prevents the protrusion 4 from being deformed outwardly by pressure from inside.
This prevents direct contact with the dice 2.
次に前記粗製品８の薄肉部１０を切削などによって除去
すれば、完成品となる。Next, by removing the thin wall portion 10 of the crude product 8 by cutting or the like, a finished product is obtained.
この場合、フライス加工などによって切削する他に、第
５図に示されるようにカッター１２によって、薄肉部１
０を打抜くようにしてもよい。In this case, in addition to cutting by milling or the like, a cutter 12 is used to cut the thin part 1 as shown in FIG.
It is also possible to punch out 0.
この場合、粗製品８は、ワークホルダー１３によってそ
の開口が斜め上向きになるように固定されるとともに、
カッター１２はスライド１４に沿って開口１５から斜め
内側下方に移動して、この時薄肉部１０を切り落すよう
にされる。In this case, the rough product 8 is fixed by the work holder 13 with its opening facing diagonally upward, and
The cutter 12 moves obliquely inwardly and downwardly from the opening 15 along the slide 14, and at this time cuts off the thin portion 10.
以上の工程を経て、製造された完成品は、第６図および
第７図に示されるようになる。The finished product manufactured through the above steps is shown in FIGS. 6 and 7.
第６図はチューリップ部Ｔを示す一部断面図とした正面
図、第７図は第６図の左側面図である。FIG. 6 is a partially sectional front view showing the tulip portion T, and FIG. 7 is a left side view of FIG. 6.
なお、上記実施例は、チューリップの外周形状が第４図
あるいは第７図に示されるように、円形となっているが
、これは第７図に二点鎖線１６で示すように、略三角形
状にすると、材料の節減、重量の軽減および肉厚の均一
化による加工過程における割れを防止できるという利点
がある。In the above embodiment, the outer circumferential shape of the tulip is circular as shown in FIG. 4 or FIG. This has the advantage of saving materials, reducing weight, and making the wall thickness uniform, thereby preventing cracks during the processing process.
上記のように本発明は、半径方向に複数の突出部を備え
るとともに、該突出部の軸方向先端がポンチ中央部より
も軸方向に突出した形状のポンチと、このポンチの外径
よりも大きい内径のダイスと、により前記突出部により
形成される穴の外周に薄肉部を残した状態で熱間鍛造に
より粗製品を製造する工程とにより、等速ジヨイントの
チューリップ部を製造するようにしたので、材料の無駄
が少な、く、かつ、加工工数が少なく、等速ジヨイント
のチューリップ部を製造できるというすぐれた効果を示
す。As described above, the present invention provides a punch having a plurality of protrusions in the radial direction, the axial tips of the protrusions protruding further in the axial direction than the center of the punch, and a punch having a shape larger than the outer diameter of the punch. The tulip part of the constant velocity joint is manufactured by using a die with an inner diameter and a process of manufacturing a crude product by hot forging while leaving a thin wall part on the outer periphery of the hole formed by the protruding part. This method has excellent effects in that the tulip part of the constant velocity joint can be manufactured with less waste of materials and fewer processing steps.
また鍛造工程に釦いて、薄肉部がポンチ先端の外方への
変形を防止するとともに、ポンチがダイスに直接接触す
ることを防止するという利点もある。Further, during the forging process, there is an advantage that the thin wall portion prevents the punch tip from deforming outward and prevents the punch from coming into direct contact with the die.
第１図は、本発明に係る等速ジヨイントのチューリップ
部の製造方法を実施するためのダイセットを示す断面図
、第２図は第１図の■−■線に沿う断面図、第３図は、
前記ダイセットにより製造される粗製品を示す断面図、
第４図は、第３図の左側面図、第５図は、前記粗製品の
薄肉部を除去するための工程を示す断面図、第６図は等
速ジヨイントのチューリップ部の完成品の一部破断正面
図、第７図は第６図の左（１１１Ｊ’面図である。
１・・・ダイセット、２・・・ダイス、２人・・・大径
部、２Ｂ・・・小径部、３・・・ポンチ、４・・・突出
部、４Ａ・・・先端、８・・・粗製品、９・・・転動溝
、１０・・・薄肉部、１１・・・花弁部、１２・・・カ
ッター １５・・・スライド、Ｔ・・・チューリップ部
。FIG. 1 is a cross-sectional view showing a die set for carrying out the method for manufacturing a tulip portion of a constant velocity joint according to the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. teeth,
A cross-sectional view showing a crude product manufactured by the die set,
FIG. 4 is a left side view of FIG. 3, FIG. 5 is a sectional view showing the process for removing the thin wall part of the crude product, and FIG. 6 is a diagram of the finished product of the tulip part of the constant velocity joint. Partially cutaway front view, Figure 7 is the left side (111J' side view) of Figure 6. 1...Die set, 2...Dice, 2 people...Large diameter part, 2B...Small diameter part , 3... Punch, 4... Protruding part, 4A... Tip, 8... Crude product, 9... Rolling groove, 10... Thin wall part, 11... Petal part, 12 ...Cutter 15...Slide, T...Tulip part.
Claims (1)
の軸方向先端がポンチ中央部よりや軸方向に突出した形
状のポンチと、このポンチの外径よりも大きい内径のダ
イスとにより、前記突出部により形成される穴の外周に
薄肉部を残した状態で熱間鍛造により粗製品を製造する
工程と、この粗製品の前記薄肉部を除去する工程とを有
してなる等速ジヨイントのチューリップ部の製造方法。 ２ 前記薄肉部はチューリップ部の花弁部を連結するよ
うにされた特許請求の範囲第１項の等速ジヨイントのチ
ューリップ部の製造方法。 ３ 前記薄肉部除去工程は、粗製品をその開口側が斜め
上向きなるように固定し、前記斜め上向きに固定された
粗製品の開口から斜め下方に移動されるカッターによる
切断する工程を含む特許請求の範囲第１項または第２項
の等速ジヨイントのチューリップ部の製造方法。[Claims] 1. A punch having a plurality of protrusions in the radial direction and having an axial tip of the protrusions protruding from the center of the punch in the axial direction, and an inner diameter larger than the outer diameter of the punch. a step of manufacturing a crude product by hot forging with a die leaving a thin wall portion on the outer periphery of the hole formed by the protruding portion; and a step of removing the thin wall portion of the crude product. A method for manufacturing the tulip part of a constant velocity joint. 2. The method for manufacturing a tulip portion of a constant velocity joint according to claim 1, wherein the thin wall portion connects petal portions of the tulip portion. 3. The thin-walled portion removing step includes a step of fixing the crude product so that its opening side faces diagonally upward, and cutting the crude product with a cutter that is moved diagonally downward from the opening of the crude product fixed diagonally upward. A method for manufacturing a tulip portion of a constant velocity joint according to the first or second range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52152099A JPS5827014B2 (en) | 1977-12-16 | 1977-12-16 | Manufacturing method of tulip part of constant velocity joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52152099A JPS5827014B2 (en) | 1977-12-16 | 1977-12-16 | Manufacturing method of tulip part of constant velocity joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5483652A JPS5483652A (en) | 1979-07-03 |
| JPS5827014B2 true JPS5827014B2 (en) | 1983-06-07 |
Family
ID=15533018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52152099A Expired JPS5827014B2 (en) | 1977-12-16 | 1977-12-16 | Manufacturing method of tulip part of constant velocity joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827014B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3032183A1 (en) * | 1980-08-27 | 1982-03-11 | Löhr & Bromkamp GmbH, 6050 Offenbach | CV DRIVE JOINT |
| JPS58112626A (en) * | 1981-12-26 | 1983-07-05 | Musashi Seimitsu Kogyo Kk | Cold forging method for tie rod end housing by transfer press |
-
1977
- 1977-12-16 JP JP52152099A patent/JPS5827014B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5483652A (en) | 1979-07-03 |
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