JPH027333Y2 - - Google Patents
Info
- Publication number
- JPH027333Y2 JPH027333Y2 JP1984098329U JP9832984U JPH027333Y2 JP H027333 Y2 JPH027333 Y2 JP H027333Y2 JP 1984098329 U JP1984098329 U JP 1984098329U JP 9832984 U JP9832984 U JP 9832984U JP H027333 Y2 JPH027333 Y2 JP H027333Y2
- Authority
- JP
- Japan
- Prior art keywords
- cam follower
- driven member
- notch
- cam
- ball
- 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
Landscapes
- Gears, Cams (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は立体カムを使用するインデツクス機
構等の従動部材に組込まれるカムフオロワーに関
するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cam follower that is incorporated into a driven member such as an index mechanism using a three-dimensional cam.
一般に、この種のカムフオロワーは第１図示の
如く、立体カムを使用するインデツクス機構等の
従動部材１にカムフオロワー軸２の後部のスタツ
ト部２′を埋込み固定し、カムフオロワー軸２の
前方部２″にニードルベアリング６を介して外輪
５を取付け、該外輪５を立体カム７のカム面７′
に転動できるように係合し、カム７の運動を従動
部材１に伝える如くなつている。このカムフオロ
ワーの作動精度と強度を高めるためにはカムフオ
ロワー軸２のスタツト部２′が従動部材１に強固
に固定されることが必要であり、この固定手段と
して、従来ではカムフオロワー軸２のスタツト部
２′の一側面に、第２図示の如く、前方かつ内方
（深さ方向）に向けて傾斜する底面３′を有する切
欠部３を形成し、該切欠部３の傾斜底面３′に従
動部材１に螺挿したネジ棒４の内端にて押圧した
ボール４′を係合させ、カムフオロワーが前方へ
移動することを有効に防止できる如く構成してい
た（実公昭54−20534号参照）。即ち、カムフオロ
ワーは外輪５を支持するカラー８が従動部材１の
外面に衝接する如く取付けられるもので、後方へ
の移動は防止されているので、前方への移動のみ
を規制できれば充分なためである。
Generally, in this type of cam follower, as shown in the first figure, a rear stud part 2' of a cam follower shaft 2 is embedded and fixed in a driven member 1 such as an index mechanism using a three-dimensional cam, and a stud part 2' of the rear part of the cam follower shaft 2 is fixed to the front part 2'' of the cam follower shaft 2. The outer ring 5 is attached via the needle bearing 6, and the outer ring 5 is attached to the cam surface 7' of the three-dimensional cam 7.
The cam 7 is rotatably engaged with the cam 7 to transmit the movement of the cam 7 to the driven member 1. In order to improve the operating precision and strength of this cam follower, it is necessary to firmly fix the stud portion 2' of the cam follower shaft 2 to the driven member 1. A notch 3 having a bottom surface 3' that slopes forward and inward (depth direction) is formed on one side of the notch 3 as shown in the second figure, and the sloped bottom surface 3' of the notch 3 is attached to the driven member. A ball 4' pressed by the inner end of a threaded rod 4 screwed into the cam follower 1 is engaged with the ball 4' to effectively prevent the cam follower from moving forward (see Utility Model Publication No. 54-20534). That is, the cam follower is installed so that the collar 8 that supports the outer ring 5 collides with the outer surface of the driven member 1, and backward movement is prevented, so it is sufficient to restrict only the forward movement. .
しかしながら、上記従来の切欠部３の底面３′
の傾斜角には限度があつた。即ち、該傾斜角を大
きくするのは加工上面倒であつたばかりでなく、
カムフオロワー軸の強度を著しく低下させる虞れ
があつたためである。従つて、カムフオロワー軸
２を前方に引出そうとする瞬間的な強い力に対し
ての弱点があつた。
However, the bottom surface 3' of the conventional notch 3
There was a limit to the angle of inclination. That is, increasing the inclination angle was not only troublesome in terms of processing, but also
This is because there was a risk that the strength of the cam follower shaft would be significantly reduced. Therefore, there was a weakness against instantaneous strong forces that try to pull the cam follower shaft 2 forward.
この考案は上記の問題点を解消するためのもの
であり、立体カムを使用するインデツクス機構等
の従動部材に対するカムフオロワー軸の固定をよ
り確実かつ強固になし得るようにしたカムフオロ
ワーを提供することを目的としている。 This invention is intended to solve the above problems, and the purpose is to provide a cam follower that can more reliably and firmly fix the cam follower shaft to a driven member such as an index mechanism using a three-dimensional cam. It is said that
〔課題を解決するための手段〕
上記目的を達成するため、この考案は立体カム
を使用するインデツクス機構等の従動部材に埋込
んだカムフオロワー軸の後部のスタツト部に、従
動部材に螺挿したネジ棒の内端にて押圧したボー
ルを係合させるための切欠部を設けたカムフオロ
ワーにおいて、前記切欠部の底面を凹球状に形成
し、該底面の最深部より後方曲面が前記ボールと
の接点となるように構成したものである。[Means for solving the problem] In order to achieve the above object, this invention uses a screw inserted into the rear stud of the cam follower shaft embedded in the driven member such as an index mechanism using a three-dimensional cam, and screwed into the driven member. In a cam follower provided with a notch for engaging a ball pressed at the inner end of a rod, the bottom of the notch is formed into a concave spherical shape, and a curved surface rearward from the deepest part of the bottom is a contact point with the ball. It is configured so that
次に、この考案を第３図及び第４図に示す実施
例に基づいて説明する。なお、第１図、第２図と
同一部分は同一符号にて示す。
Next, this invention will be explained based on the embodiment shown in FIGS. 3 and 4. Note that the same parts as in FIGS. 1 and 2 are indicated by the same reference numerals.
第３図は、外輪５を支持するカラー８を従動部
材１の外面に衝接させた状態で、カムフオロワー
軸２の後部のスタツト部２′を該従動部材１に取
り付けた場合を示している。このスタツト部２′
の外周に形成した切欠部３は、底面３′が例えば
第４図の二点鎖線で示した球体ａを押し付けて陥
没させたような凹球状に形成されている。この凹
球状の切欠部３には、従動部材１に螺挿したネジ
棒４の内端にて押圧されたボール４′が係合する
とともに、該ボール４′との接点P2が底面３′の
最深部P1より後方の曲面になつている。従つて、
従動部材１に埋め込まれたカムフオロワー軸２の
スタツト部２′は、外輪５を支持するカラー８が
従動部材１の外面に衝接する状態において、強固
に固定されることとなる。 FIG. 3 shows the case where the rear stud portion 2' of the cam follower shaft 2 is attached to the driven member 1 with the collar 8 supporting the outer ring 5 in contact with the outer surface of the driven member 1. This stud section 2'
The notch 3 formed on the outer periphery is formed into a concave spherical shape such that the bottom surface 3' is depressed by pressing the sphere a shown by the two-dot chain line in FIG. 4, for example. A ball 4' pressed by the inner end of a threaded rod 4 screwed into the driven member 1 engages with this concave spherical notch 3, and the contact point P2 with the ball 4' is connected to the bottom surface 3'. The surface is curved backwards from the deepest part P1 . Therefore,
The stud portion 2' of the cam follower shaft 2 embedded in the driven member 1 is firmly fixed in a state in which the collar 8 supporting the outer ring 5 abuts against the outer surface of the driven member 1.
以上の如く、この考案に係るカムフオロワーは
立体カムを使用するインデツクス機構等の従動部
材に埋込んだカムフオロワー軸の後部のスタツト
部に、従動部材に螺挿したネジ棒の内端にて押圧
したボールを係合させるための切欠部を設けたカ
ムフオロワーにおいて、前記切欠部の底面を凹球
状に形成し、該底面の最深部より後方曲面が前記
ボールとの接点となるようにしたことを特徴とし
ているから、従来のような単に偏平な傾斜面と異
なり、カムフオロワー軸を前方に引く瞬間的な強
い力に対して強い保持力があり、前方への脱けを
確実に防止できる。また、切欠部が凹球状である
ため、カムフオロワー軸の周方向の回転をも有効
に規制できる。さらに、該切欠部はその曲率半径
を決定するのみで上記効果が簡単に得られ、従来
のように傾斜角を大にするために加工が面倒にな
つたり、スタツト部の外周を深く切欠するために
カムフオロワー軸の強度を低下させたりする虞れ
がないなど、各種の優れた効果を奏するものであ
る。
As described above, the cam follower according to this invention is a ball that is pressed by the inner end of a threaded rod screwed into the driven member onto the stud at the rear of the cam follower shaft embedded in the driven member of an index mechanism using a three-dimensional cam. The cam follower is characterized in that the bottom surface of the notch is formed into a concave spherical shape, and a curved surface rearward from the deepest part of the bottom surface becomes a point of contact with the ball. Therefore, unlike a conventional flat inclined surface, there is a strong holding force against the instantaneous strong force that pulls the cam follower shaft forward, and it is possible to reliably prevent the cam follower shaft from coming off in the forward direction. Furthermore, since the notch has a concave spherical shape, rotation of the cam follower shaft in the circumferential direction can also be effectively restricted. Furthermore, the above effect can be easily obtained by simply determining the radius of curvature of the notch, which eliminates the need for machining to increase the angle of inclination as in the past, or to cut deeply into the outer periphery of the stud. This provides various excellent effects such as there is no risk of reducing the strength of the cam follower shaft.
第１図、第２図は従来例を示し、第１図はカム
フオロワーの取付状態の断面図、第２図はスタツ
ト部の斜視図、第３図及び第４図はこの考案の実
施例を示すもので、第３図はカムフオロワーの取
付状態の側面断面図、第４図はカムフオロワー軸
のスタツト部の切欠部を示す斜視図である。
１……従動部材、２……カムフオロワー軸、
２′……スタツト部、３……切欠部、３′……切欠
部底面、４……ネジ棒、４′……ボール。
Figures 1 and 2 show a conventional example, Figure 1 is a sectional view of the cam follower installed, Figure 2 is a perspective view of the stud, and Figures 3 and 4 show an embodiment of this invention. FIG. 3 is a side sectional view of the cam follower in an installed state, and FIG. 4 is a perspective view showing a notch in the stud of the cam follower shaft. 1... Driven member, 2... Cam follower shaft,
2'...Stat part, 3...Notch part, 3'...Bottom surface of notch part, 4...Threaded rod, 4'...Ball.
Claims (1)
部材に埋込んだカムフオロワー軸の後部のスタツ
ト部に、従動部材に螺挿したネジ棒の内端にて押
圧したボールを係合させるための切欠部を設けた
カムフオロワーにおいて、前記切欠部の底面を凹
球状に形成し、該底面の最深部より後方曲面が前
記ボールとの接点となるようにしたことを特徴と
するカムフオロワー。 A notch is provided at the rear stud of a cam follower shaft embedded in a driven member such as an index mechanism using a three-dimensional cam to engage a ball pressed by the inner end of a threaded rod screwed into the driven member. A cam follower characterized in that the bottom surface of the notch is formed into a concave spherical shape, and a curved surface rearward from the deepest part of the bottom surface becomes a point of contact with the ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9832984U JPS6114253U (en) | 1984-06-29 | 1984-06-29 | cam follower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9832984U JPS6114253U (en) | 1984-06-29 | 1984-06-29 | cam follower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6114253U JPS6114253U (en) | 1986-01-27 |
| JPH027333Y2 true JPH027333Y2 (en) | 1990-02-21 |
Family
ID=30657874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9832984U Granted JPS6114253U (en) | 1984-06-29 | 1984-06-29 | cam follower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114253U (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5420534Y2 (en) * | 1976-07-27 | 1979-07-24 | ||
| JPS5423981U (en) * | 1977-07-21 | 1979-02-16 | ||
| JPS55103107A (en) * | 1979-02-01 | 1980-08-07 | Hitachi Metals Ltd | Fixing method of housing and shaft |
-
1984
- 1984-06-29 JP JP9832984U patent/JPS6114253U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114253U (en) | 1986-01-27 |
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