JPS60201865A

JPS60201865A - Spindle table for cam grinding machine

Info

Publication number: JPS60201865A
Application number: JP5498384A
Authority: JP
Inventors: Akio Kotoi; 小樋　秋夫
Original assignee: Okuma Tekkosho KK; Okuma Machinery Works Ltd
Current assignee: Okuma Corp
Priority date: 1984-03-22
Filing date: 1984-03-22
Publication date: 1985-10-12
Also published as: JPH0360625B2

Abstract

PURPOSE:To enable high speed slave motion corresponding with the rotation and to shorten the machining time by employing the turning motion of an eccentric sleeve to roll the spindle in accordance to the shape of master cam at the tip through the motion of spindle. CONSTITUTION:Upon rotation of a spindle 5, an eccentric sleeve 4 will roll in accordance to the shape of master cam 6 as the master cam 6 rotates because said cam 6 is pressure contacting continuously through a tensile spring 15 and an eccentric sleeve 4 against a cam follower 14. Since the motor 9 for driving the spindle is fixed integrally with said sleeve 4 through a fixed board 8, the distance from the spindle 5 is maintained constant to rotate the spindle 5 reliably thus to grid a cam face corresponding with the shape of master cam 6 onto a work W through rolling of said sleeve 4. Cutting during grinding is performed by moving the cutting table 2 in the perpendicular direction against the axis of spindle. Consequently, it can follow the high speed rotation of master cam.

Description

【発明の詳細な説明】技術分野この発明は主軸先端にマスターカムを固着し、固定位置
のカムフォロアに押しつけて、主軸に揺動運動を与えな
がら工作物のカム面を研削加工するカム研削盤の主軸台
に関する。[Detailed Description of the Invention] Technical Field The present invention relates to a cam grinding machine in which a master cam is fixed to the tip of the main spindle and is pressed against a cam follower at a fixed position to grind the cam surface of a workpiece while giving an oscillating motion to the main spindle. Regarding the headstock.

従来技術マスターカムをカム７オロアに押し当て主軸を回転させ
たとき、マスターカムの形状に応じて主軸を揺動させる
に際し、従来は主軸台をベッド上の案内面に沿って主軸
々腺と直角な方向に直線揺動させていた。そのため主軸
−を高速回転させた場合に案内面との間の指動抵抗が大
きく、主軸台をカム形状に正確に追従して揺動させるこ
とが出来ず、従って加工時間を短縮させることができな
いという欠点があった。Conventional technology When the master cam is pressed against the cam 7 roller and the main shaft is rotated, the main shaft is swung according to the shape of the master cam. Conventionally, the headstock is moved along the guide surface on the bed at right angles to the main shaft glands. It was oscillating in a straight line in the same direction. Therefore, when the spindle is rotated at high speed, the finger resistance between it and the guide surface is large, making it impossible to swing the headstock to accurately follow the cam shape, and therefore making it impossible to shorten machining time. There was a drawback.

目的この発明は上記欠点を解消するためになされたものであ
って、旋回運動を利用して主軸に揺動を与えることによ
り、主軸の高速回転に応じてマスターカムの形状に対応
した高速追従運動を可能ならしめることを目的としてし
する。Purpose This invention was made in order to eliminate the above-mentioned drawbacks, and by applying rocking motion to the main shaft using turning motion, a high-speed follow-up motion corresponding to the shape of the master cam can be achieved in accordance with the high-speed rotation of the main shaft. The aim is to make this possible.

解決手段本発明ではマスターカムを取付けた主軸を、旋回可能な
偏心スリーブを介して主軸台に支承させ、この偏心スリ
ーブと主軸台との間にばねを取付け、マスターカムを固
定位置にあるカムフォロアに圧接させ、そして主軸回転
によりマスターカムの形状に応じて主軸を揺動させるに
際し偏心スリーブの旋回運動を用いるようになしたもの
である。Solution: In the present invention, the main shaft with the master cam attached is supported on the headstock via a rotatable eccentric sleeve, a spring is installed between the eccentric sleeve and the headstock, and the master cam is mounted on the cam follower at a fixed position. The rotary motion of the eccentric sleeve is used when the main shaft is rotated to swing the main shaft according to the shape of the master cam.

実施例以下に本発明の実施例を図面にもとづき説明する。ベッ
ド１の左側上面にはベッドの長手方向に吋して直角な方
向に摺動案内面が形成されていて、切込台２が摺動可能
に載置されている。この切込台２の上には主軸台６が固
着されていて、主軸台３内にはベッドの長手方向と平行
に偏心スリーブ４が軸承されており、この偏心スリーブ
４内に主軸５が更に軸承されている。主軸５の先端には
力ｐ工すべき工作物Ｗのカム形状に応じて形成されたプ
ロフィルを外周部に有する円板状のマスターカム６と工
作物貰を把持したチャック７とが取付けられているう前
記偏心スリーブ４の後端部には主軸々腺に直角な方向に
伸びる固定板８がｆｉｌ！されていて、その端部には電
動機９が取付けられている、そして電動機９の出力軸に
取付けられたブー９１０と主軸後端部に取付けられたブ
ー９１１との間にベルト１２が張られて、主軸に回転駆
動を与えるように構成されている。前記切込台２にはマ
スターカム６に対応した位置にブラケット１６が固着さ
れていて、先端にカムフォロア１４が回転可能に取付け
られている。前記偏心スリーブ４に固着の固定板８と主
軸台３端面との間には引張ばね１５が張られていて、前
記マスターカム６を常に別記カム７オロア１４に圧接す
るように付勢している。ベッド１の右側上面には主軸々
線に平行に指動可能にテープ／Ｉ／１６が載置されてい
て、このテーブル１６上には先端に砥石１７を有する砥
石軸１８を軸承した砥石台１９とこの砥石１７に回転を
与える電動［２０とが取付けられている。Embodiments Below, embodiments of the present invention will be described based on the drawings. A sliding guide surface is formed on the left upper surface of the bed 1 in a direction perpendicular to the longitudinal direction of the bed, and a cutting table 2 is slidably placed thereon. A headstock 6 is fixed on the cutting table 2, and an eccentric sleeve 4 is supported in the headstock 3 in parallel with the longitudinal direction of the bed. It is mounted on a shaft. Attached to the tip of the main shaft 5 are a disc-shaped master cam 6 whose outer periphery has a profile formed according to the cam shape of the workpiece W to be machined, and a chuck 7 that grips the workpiece. At the rear end of the eccentric sleeve 4, there is a fixing plate 8 extending in a direction perpendicular to the main shaft. A motor 9 is attached to the end of the motor 9, and a belt 12 is stretched between a boot 910 attached to the output shaft of the motor 9 and a boot 911 attached to the rear end of the main shaft. , is configured to provide rotational drive to the main shaft. A bracket 16 is fixed to the cutting table 2 at a position corresponding to the master cam 6, and a cam follower 14 is rotatably attached to the tip. A tension spring 15 is tensioned between the fixed plate 8 fixed to the eccentric sleeve 4 and the end surface of the headstock 3, and urges the master cam 6 to always press against the subordinate cam 7. . A tape/I/16 is placed on the upper right side of the bed 1 so as to be movable parallel to the main shafts, and on this table 16 is a grindstone stand 19 that supports a grindstone shaft 18 having a grindstone 17 at its tip. An electric motor [20] which gives rotation to this grindstone 17 is attached.

次に作用について説明する。切込台２を主軸々線に直角
な方向に移動させ工作物Ｗを研削位置に位１ｔｌ１１ｉ
シ・電動機９を作動させて主軸５を回転させる。引張ば
ね１５により偏心スリーブ４を介してマスターカム６は
常にカムフォロア１４に圧接されているので主軸５の回
転に伴なってマスターカム６が回転したとき、マスター
カム６の形状に従つて偏心スリーブ４が揺動回転させら
れる。このとき主軸駆動用の電動機９は固定板８により
偏心スリーブ４と一体に取付けられているので、主軸５
との距離は一定に保たれていて、主軸５の回転は確実に
行なわれるものである。偏心スリーブ４の揺動により工
作物Ｗにはマスターカム乙の形状に対応したカム面が研
削加工される。そして研削加工時の切込みは切込台２を
主軸々線に直角な方向に移動することにより行なわれる
。尚マスターカム６を製作するに際しては工作＊Ｗに代
ってチャック７にモデルカムを取付け、砥石１７に代っ
て砥石軸１８にモデルカム用の７オロアを取付ける。Next, the effect will be explained. Move the cutting table 2 in a direction perpendicular to the main axis and place the workpiece W at the grinding position 1tl11i
B. Operate the electric motor 9 to rotate the main shaft 5. The master cam 6 is always pressed against the cam follower 14 via the eccentric sleeve 4 by the tension spring 15, so when the master cam 6 rotates with the rotation of the main shaft 5, the eccentric sleeve 4 moves according to the shape of the master cam 6. is oscillated and rotated. At this time, since the electric motor 9 for driving the main shaft is integrally attached to the eccentric sleeve 4 by the fixing plate 8, the main shaft 5
The distance between the main shaft 5 and the main shaft 5 is kept constant, and the rotation of the main shaft 5 is ensured. By swinging the eccentric sleeve 4, a cam surface corresponding to the shape of the master cam O is ground on the workpiece W. The cutting during the grinding process is performed by moving the cutting table 2 in a direction perpendicular to the main axis. When manufacturing the master cam 6, a model cam is attached to the chuck 7 instead of the work *W, and a 7 oror for the model cam is attached to the grindstone shaft 18 instead of the grindstone 17.

そしてカムフォロア１４に代ってブラケット１３に砥石
を取付けて駆動させることにより、モデルカムの形状に
倣って偏心スリーブ４を揺動させながらマスターカム６
の外周を研削加工して形成するものである。Then, by attaching a grinding wheel to the bracket 13 instead of the cam follower 14 and driving it, the master cam 6 is rotated while the eccentric sleeve 4 is oscillated following the shape of the model cam.
It is formed by grinding the outer periphery of.

効果以上詳述したように本発明ではマスターカムの形状上広
じて主軸を軸線と直角な方向に揺動させるに際し、偏心
スリーブを回転させるようになしたので、マスターカム
の高速回転に充分に追従して揺動することができるよう
になり、従ってカム面の研削加工時間を短縮することが
できる効果を有する。Effects As detailed above, in the present invention, due to the shape of the master cam, the eccentric sleeve is rotated when the main shaft is oscillated in a direction perpendicular to the axis. It is now possible to follow the swing motion, and therefore has the effect of shortening the grinding time of the cam surface.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はカム研削盤の全体図、第２図は主軸台の断面図
、第３図は偏心スリーブと引張ばねとの関係を示す図で
ある＝３・・・主軸台　４・・・偏心スリーブ５・・・主軸　
６・・・マスターカムFigure 1 is an overall view of the cam grinder, Figure 2 is a sectional view of the headstock, and Figure 3 is a diagram showing the relationship between the eccentric sleeve and the tension spring = 3... Headstock 4... Eccentricity Sleeve 5...Main shaft
6...Master cam

Claims

【特許請求の範囲】[Claims]

（１）主軸台に旋回可能に支承された偏心スリーブと、
該偏心スリーブ内に軸承された主軸と、該主軸の先端部
に取付けられたマスターカムと、該マスターカムの外周
部に当接する位置で前記主軸台に位置一定されたカムフ
ォロアと、前記偏心スリーブを旋回させ前記マスターカ
ムを常に前記カムフォロアに圧接させるべく前記偏心ス
リーブと前記主軸台との間に張設された弾機部材とを備
えたことを特徴とするカム研削盤の主軸台。(1) an eccentric sleeve rotatably supported on the headstock;
A main shaft supported within the eccentric sleeve, a master cam attached to the tip of the main shaft, a cam follower fixed in position on the headstock at a position abutting the outer periphery of the master cam, and the eccentric sleeve. A headstock for a cam grinding machine, comprising: a resilient member stretched between the eccentric sleeve and the headstock so as to rotate the master cam so that the master cam always comes into pressure contact with the cam follower.