JPH0337907Y2 - - Google Patents
Info
- Publication number
- JPH0337907Y2 JPH0337907Y2 JP1983184346U JP18434683U JPH0337907Y2 JP H0337907 Y2 JPH0337907 Y2 JP H0337907Y2 JP 1983184346 U JP1983184346 U JP 1983184346U JP 18434683 U JP18434683 U JP 18434683U JP H0337907 Y2 JPH0337907 Y2 JP H0337907Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oil chamber
- nut
- oil
- sensing device
- 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
- 238000001514 detection method Methods 0.000 claims description 30
- 230000007423 decrease Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000007667 floating Methods 0.000 description 39
- 238000003825 pressing Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 9
- 238000003754 machining Methods 0.000 description 6
- 238000009530 blood pressure measurement Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001416181 Axis axis Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
- Nonmetal Cutting Devices (AREA)
Description
【考案の詳細な説明】
この考案は、複数個の丸刃をアーバー軸に組み
込み、アーバー軸に螺合するナツトにより締めつ
けて各丸刃をアーバー軸に固定した丸刃工具に関
するものである。[Detailed Description of the Invention] This invention relates to a round blade tool in which a plurality of round blades are assembled into an arbor shaft and each round blade is fixed to the arbor shaft by tightening with a nut screwed onto the arbor shaft.
上記丸刃工具は通常上、下１対としてカツタを
構成して、フイルム、磁気テープ等の裁断に用い
るものであるが、一般には第１図に示す如く、ア
ーバー軸１の丸刃取付け部１ａに複数個の丸刃２
を組み込み、アーバー軸１の一端側のねじ部１ｂ
に螺合する通常のナツト３を締め付けることによ
り、各丸刃２をアーバー軸１の他側の固定鍔部１
ｃとの間で押圧固定している。 The above-mentioned round blade tools are usually configured as a pair of upper and lower cutters and are used for cutting films, magnetic tapes, etc. Generally, as shown in FIG. multiple round blades 2
Incorporate the threaded part 1b on one end side of the arbor shaft 1.
By tightening a normal nut 3 that is screwed into the
It is pressed and fixed between c.
ところで、フイルム、磁気テープ等の裁断に用
いる場合には、各丸刃２のアーバー軸軸線方向の
ピツチ、対応する上下刃間のピツチ誤差および各
丸刃２の側面のアーバー軸軸心に対する直角度及
び回転時の軸心方向のフレ（側面フレ）に関して
著しく高い寸法精度が要求される。したがつて、
単にアーバー軸１の固定鍔部１ｃの側面の直角
度、丸刃２の側面の加工精度を高めるだけでな
く、ねじ部１ｂの加工精度、ナツト３のねじ孔の
加工精度、およびナツトの側面の加工精度を充分
高くして、ナツト３が丸刃２の側面に正確な直角
度で面接触し、かつ、正確なアーバー軸軸線方向
の均等な面圧で丸刃２を押圧するように締め付け
なければならない。ナツト３がアーバー軸軸線方
向に対して傾斜して丸刃２を押圧固定すれば、丸
刃２はアーバー軸軸線に対して傾いて固定される
ことになり、上刃、下刃として上下１対で使用さ
れる場合には、高速度、かつ高精度で裁断する機
能を持つことができず、また、ねじ部１ｂに作用
する偏心した力による曲げモーメントが生じて、
アーバー軸１の丸刃取付け部１ａに歪応力を与
え、経年変化による曲りを防止することができな
い。また、ナツト３が丸刃２を正しくアーバー軸
軸線方向に押圧しているとしても、その押圧力に
よつて、各丸刃２の圧縮変形により丸刃２のピツ
チが所望の厳格な寸法に設定されず、このピツチ
の誤差が累積して無視できないものとなり、ま
た、上刃、下刃の対応する丸刃の軸線方向のピツ
チの相互差が大きくなつてしまう。 By the way, when used for cutting films, magnetic tapes, etc., the pitch of each round blade 2 in the arbor axis direction, the pitch error between the corresponding upper and lower blades, and the perpendicularity of the side surface of each round blade 2 to the arbor axis axis Also, extremely high dimensional accuracy is required regarding deflection in the axial direction (side deflection) during rotation. Therefore,
It not only improves the perpendicularity of the side surface of the fixed flange 1c of the arbor shaft 1 and the machining accuracy of the side surface of the round blade 2, but also improves the machining accuracy of the threaded portion 1b, the machining accuracy of the threaded hole of the nut 3, and the machining accuracy of the side surface of the nut. The machining accuracy must be sufficiently high, and the nut 3 must be tightened so that it makes surface contact with the side surface of the round blade 2 at an accurate right angle, and presses the round blade 2 with an accurate uniform surface pressure in the axial direction of the arbor axis. Must be. If the nut 3 presses and fixes the round blade 2 at an angle with respect to the arbor shaft axis direction, the round blade 2 will be fixed at an angle with respect to the arbor shaft axis. When used in
It is not possible to apply strain stress to the round blade attachment portion 1a of the arbor shaft 1 and prevent it from bending due to aging. Furthermore, even if the nut 3 is correctly pressing the round blades 2 in the direction of the arbor shaft axis, the pitch of the round blades 2 is set to a desired exact dimension due to compressive deformation of each round blade 2 due to the pressing force. Otherwise, this pitch error accumulates and becomes non-negligible, and the mutual difference in pitch in the axial direction of the corresponding round blades of the upper and lower blades becomes large.
第１図に示した如き単なるナツト３による締付
けでは、上記の如く厳格な要求を充分に満たすこ
とが困難であるため、第２図に示す如き、フロー
テイングナツト４を用いる方法が最近行われてい
る。このフローテイングナツト４は、第３図に要
部を拡大して示すように、ナツト本体４ａのねじ
孔４ｂの周囲に複数個のシリンダ筒４ｃを設け、
このシリンダ筒４ｃにそれぞれピストンピン４ｄ
をナツト本体４ａの一方の側面がわに出没自在に
嵌挿し、各シリンダ筒４ｃの奥方に形成される油
室４ｅを連通路４ｆにより相互に連通させ、ま
た、第４図に示すように油室４ｅおよび連通路４
ｆの全容積（すなわち油が収容される容積）を可
変として油圧を調整するための加圧スクリユー４
ｇを設けたものである。 Since it is difficult to fully satisfy the above-mentioned strict requirements by simply tightening the nut 3 as shown in FIG. 1, a method using a floating nut 4 as shown in FIG. 2 has recently been used. There is. This floating nut 4 has a plurality of cylinder tubes 4c provided around a screw hole 4b of a nut body 4a, as shown in an enlarged view of the main part in FIG.
Each piston pin 4d is attached to this cylinder tube 4c.
is inserted into one side of the nut body 4a so as to be freely protrusive and retractable, and the oil chambers 4e formed at the back of each cylinder tube 4c are communicated with each other through the communication passage 4f, and the oil Chamber 4e and communication path 4
A pressurizing screw 4 for adjusting the oil pressure by changing the total volume of f (that is, the volume in which oil is accommodated)
g.
このフローテイングナツト４によれば、丸刃２
に対しては、等しい油圧力を受けるピストンピン
４ｄが押圧力を与えるので、アーバー軸１のねじ
部１ｂの精度、ナツト本体４ａの側面の軸線に対
する直角度、あるいは面積度に影響されることな
く、押圧力は丸刃２に対して均一に作用する。し
たがつて、アーバー軸１の固定鍔部１ｃの側面を
軸心に対して直角に加工し、かつ、各丸刃２の両
側面の平行度を確保することによつて、常に丸刃
２の軸心に対する直角度を保つことが可能とな
る。しかしながら、この従来のフローテイングナ
ツト４における油圧圧力の調整は、加圧スクリユ
ー４ｇを締め、あるいは緩めて内部容積を変化さ
せることにより行うものであり、そして、加圧ス
クリユー４ｇの締め付けをトルクレンチを用いて
行つて、このトルクレンチによる加圧スクリユー
４ｇの締付けトルクとして間接的に油圧の圧力を
感知するものであるので、油室４ｅの圧力を正確
に設定して丸刃２に対する所望の押圧力を得るこ
とがきわめて困難で、上述の丸刃工具の如く精密
組立てを必要とするものには必ずしも充分とは言
えない。 According to this floating nut 4, the round blade 2
, the piston pin 4d, which receives the same hydraulic pressure, applies a pressing force, so it is not affected by the accuracy of the threaded portion 1b of the arbor shaft 1, the perpendicularity of the side surface of the nut body 4a to the axis, or the degree of surface area. , the pressing force acts uniformly on the round blade 2. Therefore, by machining the side surface of the fixed flange 1c of the arbor shaft 1 at right angles to the axis and ensuring the parallelism of both sides of each round blade 2, the round blade 2 is always It becomes possible to maintain perpendicularity to the axis. However, the adjustment of the hydraulic pressure in this conventional floating nut 4 is performed by tightening or loosening the pressure screw 4g to change the internal volume, and the pressure screw 4g is tightened using a torque wrench. Since the hydraulic pressure is indirectly sensed as the tightening torque of the pressurizing screw 4g by this torque wrench, the pressure in the oil chamber 4e can be accurately set to obtain the desired pressing force against the round blade 2. It is extremely difficult to obtain this, and it cannot necessarily be said to be sufficient for tools that require precision assembly, such as the above-mentioned round-blade tools.
この考案は上記従来の欠点を解消するためにな
されたもので、丸刃のアーバー軸軸心に対する直
角度を正確に保つことができ、また、丸刃に対す
る押圧力を丸刃の側面全体に均一に、かつ所望の
大きさに設定し、丸刃を、軸心に直角に回転時の
側面フレをおさえ各刃のピツチを再現性よくコン
トロールし、上下刃間のピツチ誤差を小さくする
ことが容易な丸刃工具を得ることを目的とするも
のである。 This idea was made to eliminate the above-mentioned conventional drawbacks.It is possible to accurately maintain the perpendicularity of the round blade to the arbor shaft axis, and the pressing force on the round blade is uniform over the entire side surface of the round blade. It is easy to set the round blade to the desired size, suppress the side deflection when rotating at right angles to the axis, control the pitch of each blade with good reproducibility, and reduce the pitch error between the upper and lower blades. The purpose is to obtain a round-edged tool.
以下本考案の一実施例を第５図以下に従つて説
明する。 An embodiment of the present invention will be described below with reference to FIG. 5 and subsequent figures.
本考案の丸刃工具を示す第５図において、フロ
ーテイングナツト１０以外については第１図、第
２図の従来のものと共通するので、同じ記号を付
して説明を省略するが、本考案におけるフローテ
イングナツト１０は、第６図イ，ロ、第７図イ，
ロに示すように、中央部にねじ孔１１を持つナツ
ト本体（ナツト）１２の周縁部にねじ孔中心線方
向をなす複数個のシリンダ筒１３を有し、各シリ
ンダ筒１３の奥部（第６図ロにおいて右方、すな
わち丸刃２の反対側）に油室１４が形成されると
ともに、各油室１４は連通路１５を介して相互に
連通され、各シリンダ筒１３にはナツト本体１２
の一方の側面（第６図ロにおいて左方、すなわち
丸刃２側の側面）がわに出没自在にピストンピン
１６が嵌挿され、ナツト本体１２の他方の側面に
は、第７図イ，ロに示すように、前記連通路１５
に連通する円筒状の加圧用油室１７に進退自在に
設けられて、前記油室１４の油圧を増減させる加
圧スクリユー（すなわち加圧操作部材１８を備え
ている。この加圧スクリユー１８は、ナツト本体
１２の外周部に設けることもできる。以上の構成
は、第２図〜第４図に示した従来の丸刃工具にお
けるフローテイングナツト４と基本的には同じ構
造であるが、本考案におけるフローテイングナツ
ト１０には、さらにナツト本体１２の前記他方の
側面に、前記連通路１５に外部から後述する如き
圧力感知装置の圧力検出用ロツドの一端を臨ませ
て、この圧力検出用ロツドを介して油室１４内の
圧力を外部に伝達することができる圧力感知装置
接続部１９を設けている。 In FIG. 5 showing the round-blade tool of the present invention, the parts other than the floating nut 10 are the same as those of the conventional tool shown in FIGS. The floating nuts 10 in Fig. 6 A, B, Fig. 7 A,
As shown in FIG. 2B, a nut body (nut) 12 having a screw hole 11 in the center has a plurality of cylinder tubes 13 extending in the direction of the center line of the screw holes on the peripheral edge thereof. An oil chamber 14 is formed on the right side in FIG.
A piston pin 16 is fitted into and retractable from one side of the nut body 12 (the left side in FIG. As shown in FIG.
A pressurizing screw (that is, a pressurizing operation member 18) is provided in a cylindrical pressurizing oil chamber 17 that communicates with the oil chamber 14 so as to be able to move forward and backward to increase or decrease the oil pressure in the oil chamber 14. It can also be provided on the outer periphery of the nut body 12.The above structure is basically the same as the floating nut 4 in the conventional round-blade tool shown in FIGS. 2 to 4, but the present invention The floating nut 10 further has one end of a pressure detection rod of a pressure sensing device, which will be described later, exposed to the communication path 15 from the outside on the other side of the nut body 12, and this pressure detection rod is connected to the floating nut 10. A pressure sensing device connection 19 is provided through which the pressure in the oil chamber 14 can be transmitted to the outside.
なお、前記ピストンピン１６は、段付きとさ
れ、出没部１６ａが若干細径とされており、段部
１６ｂがナツト本体１２の側面に取り付けられた
側面板２０により規制されて、抜け止めが図られ
る。また、前記加圧スクリユー１８は先端側にピ
ストン部１８ａを有し、このピストン部１８ａが
前記加圧用油室１７内に摺動可能に嵌合してお
り、加圧用油室１７は第８図に示す如く前記連通
路１５に側面板２０がわから連絡孔１７ａを介し
て連通している。 The piston pin 16 is stepped, with a protruding and retracting portion 16a having a slightly smaller diameter, and the stepped portion 16b is regulated by a side plate 20 attached to the side surface of the nut body 12 to prevent it from coming off. It will be done. Further, the pressurizing screw 18 has a piston portion 18a on the tip side, and this piston portion 18a is slidably fitted into the pressurizing oil chamber 17, and the pressurizing oil chamber 17 is arranged as shown in FIG. As shown in FIG. 2, the side plate 20 communicates with the communication path 15 through a communication hole 17a.
前記圧力感知装置接続部１９は、第９図、第１
０図に示す如き圧力感知装置２１を接続するため
のもので、この圧力感知装置２１は、圧力伝達部
２２と、加圧ユニツト部２３と、ブルドン管２４
とからなり、圧力伝達部２２が前記圧力感知装置
接続部１９に接続される。 The pressure sensing device connection part 19 is as shown in FIG.
This pressure sensing device 21 is for connecting a pressure sensing device 21 as shown in FIG.
A pressure transmission section 22 is connected to the pressure sensing device connection section 19.
圧力感知装置接続部１９および圧力感知装置２
１の詳細を第１１図により説明する。 Pressure sensing device connection 19 and pressure sensing device 2
1 will be explained in detail with reference to FIG.
圧力感知装置接続部１９は、連通路１５（なお
第１１図に図示の連通路は第６図ロに図示のもの
と連通しており同じものである）に小孔２５を介
して連通するねじ孔２６に逆止弁２７を設けてな
るもので、この逆止弁２７は、円筒孔２７の内端
縁の弁座にスプリング２７ｂによりボール（弁
体）２７ｃを押し付けて構成されている。 The pressure sensing device connection part 19 is a screw that communicates with the communication path 15 (the communication path shown in FIG. 11 communicates with the one shown in FIG. 6B and is the same) through a small hole 25. A check valve 27 is provided in the hole 26, and the check valve 27 is constructed by pressing a ball (valve body) 27c against a valve seat on the inner edge of the cylindrical hole 27 by a spring 27b.
圧力感知装置２１の加圧ユニツト部２３は、内
部に円筒状の測圧用油室２８を有し、この測圧用
油室２８に摺動可能に嵌合するピストン部２９ａ
を持つ調整スクリユー２９がねじ孔３０に螺合さ
れ、測圧用油室２８に開口するブルドン管取付け
用のねじ孔３１があけられ、また、下面側には圧
力検出用ロツド３２を摺動可能に嵌入する円筒孔
３３があけられている。 The pressurizing unit part 23 of the pressure sensing device 21 has a cylindrical pressure measuring oil chamber 28 therein, and a piston part 29a that is slidably fitted into the pressure measuring oil chamber 28.
An adjustment screw 29 with a holder is screwed into the screw hole 30, and a screw hole 31 for attaching a Bourdon tube that opens into the pressure measuring oil chamber 28 is bored, and a pressure sensing rod 32 can be slid on the lower surface side. A cylindrical hole 33 into which it is inserted is bored.
圧力伝達部２２は、前記圧力検出用ロツド３２
を摺動可能に嵌入する円筒孔３４を持つ本体部３
５を有し、この本体部３５は、逆止弁２７の円筒
孔２７ａに嵌入可能で、かつ、下端に切欠き３５
ｄ（第１２図の拡大図参照）を小径筒部（筒部）
３５ａ、この小径筒部３５ａの上部の中径筒部３
５ｂを有し、この中径筒部３５ｂには、圧力感知
装置接続部１９のねじ孔２６に螺着されるねじ部
３６ａを持つ取付け用部材３６が回転自在に嵌装
され、この取付け用部材３６はホルダ３７により
本体部３５に保持されている。また、前記圧力検
出用ロツド３２の上方部にはつば３２ａが固定さ
れ、本体部３５には、このつば３２ａの若干距離
の移動を許容させる凹部３５ｃが形成されてい
る。 The pressure transmission section 22 is connected to the pressure detection rod 32.
The main body part 3 has a cylindrical hole 34 into which the body part 3 is slidably inserted.
5, this main body part 35 can be fitted into the cylindrical hole 27a of the check valve 27, and has a notch 35 at the lower end.
d (see enlarged view in Figure 12) is the small diameter cylinder part (cylindrical part)
35a, the upper medium diameter cylinder part 3 of this small diameter cylinder part 35a
5b, and a mounting member 36 having a threaded portion 36a screwed into the screw hole 26 of the pressure sensing device connection portion 19 is rotatably fitted into this medium diameter cylindrical portion 35b. 36 is held on the main body part 35 by a holder 37. Further, a collar 32a is fixed to the upper part of the pressure detection rod 32, and a recess 35c is formed in the main body 35 to allow the collar 32a to move a certain distance.
次に操作について説明する。 Next, the operation will be explained.
(1) まず、アーバー軸１に所定の丸刃２を組み込
み、フローテイングナツト１０をねじ部１ｂに
螺合させ、これを回わして丸刃２を締め付け
る。この締付けは最終的な締付けではない。(1) First, install a predetermined round blade 2 into the arbor shaft 1, screw the floating nut 10 onto the threaded part 1b, and turn it to tighten the round blade 2. This tightening is not the final tightening.
(2) 次に、圧力感知装置２１をフローテイングナ
ツト１０の圧力感知装置接続部１９に接続す
る。この接続は、圧力伝達部２２の先端の小径
筒部３５ａを圧力感知装置接続部１９の逆止弁
２７の円筒孔２７ａに挿入し、取付け操作部材
３６を回わしてそのねじ部３６ａをねじ孔２６
にねじ込んで行う。この操作により、小径筒部
３５ａが逆止弁２７のボール２７ｃを押し下
げ、小径筒部３５ａ内にその下端部の切欠き３
５ｄから油が流入し、圧力検出用ロツド３２の
下面に連通路１５の油圧が作用する。(2) Next, connect the pressure sensing device 21 to the pressure sensing device connecting portion 19 of the floating nut 10. This connection is made by inserting the small diameter cylindrical part 35a at the tip of the pressure transmitting part 22 into the cylindrical hole 27a of the check valve 27 of the pressure sensing device connection part 19, and turning the mounting operation member 36 to insert the threaded part 36a into the screw hole. 26
This is done by screwing it into the By this operation, the small diameter cylindrical portion 35a pushes down the ball 27c of the check valve 27, and the notch 3 at the lower end of the small diameter cylindrical portion 35a is inserted into the small diameter cylindrical portion 35a.
Oil flows in from 5d, and the hydraulic pressure of the communication passage 15 acts on the lower surface of the pressure detection rod 32.
(3) 次いで、フローテイングナツト１０の加圧ス
クリユー１８を緩め、かつ、圧力感知装置２１
の調整スクリユー２９を緩める。この時、フロ
ーテイングナツト１０の油室１４内の圧力、お
よび圧力感知装置２１内の測圧用油室２８内の
圧力は充分低い。(3) Next, loosen the pressure screw 18 of the floating nut 10 and remove the pressure sensing device 21.
Loosen the adjustment screw 29. At this time, the pressure in the oil chamber 14 of the floating nut 10 and the pressure in the pressure measuring oil chamber 28 in the pressure sensing device 21 are sufficiently low.
(4) 次いで調整スクリユー２９を締めて、測圧用
油室２８内の容積を減少させることによりその
油圧を高め、フローテイングナツト１０の所望
の設定圧、例えば200Kg／cm2にまで上昇させる。
この圧力はブルドン管２４で読み取る。この段
階では、圧力検出用ロツド３２は、つば３２ａ
が凹部３５ｃの下面に当たる状態、すなわち下
降限位置にまで測圧用油室２８内の油圧により
押し下げられている。(4) Next, tighten the adjusting screw 29 to increase the oil pressure by reducing the volume inside the pressure measuring oil chamber 28, and raise it to the desired set pressure of the floating nut 10, for example, 200 kg/cm 2 .
This pressure is read by the Bourdon tube 24. At this stage, the pressure detection rod 32 is connected to the collar 32a.
is pushed down by the oil pressure in the pressure measuring oil chamber 28 to the state where it touches the lower surface of the recess 35c, that is, to the lowering limit position.
(5) 次いで、フローテイングナツト１０の加圧ス
クリユー１８を締めて、ブルドン管２４のゲー
ジ圧を前記設定圧200Kg／cm2より若干高い圧力、
例えば205Kg／cm2まで上昇させる。すなわち、
加圧スクリユー１８を締めると、フローテイン
グナツト１０内の油圧が上昇し、この油圧は、
圧力検出用ロツド３２の下面に作用するので、
フローテイングナツト１０内の油圧が圧力感知
装置２１の測圧用油室２８内の油圧より高くな
ると、圧力検出用ロツド３２は上昇し、この上
昇に伴つて測圧用油室２８内の容積が減少する
ので、測圧用油室２８内の油圧が上昇する。そ
して、圧力検出用ロツド３２のつば３２ａが上
昇限位置に達するまでは、圧力検出用ロツド３
２の上端面に作用する力と下端面に作用する力
とは釣り合つているので、その状態では、フロ
ーテイングナツト１０内の油圧と測圧用油室２
８内の油圧とは等しく、したがつて、フローテ
イングナツト１０内の油圧をブルドン管２４の
ゲージ圧として検出することができる。以上の
操作は、フローテイングナツト１０内の油圧、
および測圧用油室２８内の油圧をおおよそ設定
値、すなわち200Kg／cm2の近くにしておくため
の粗調整である。(5) Next, tighten the pressure screw 18 of the floating nut 10 to set the gauge pressure of the Bourdon tube 24 to a pressure slightly higher than the set pressure of 200 kg/cm 2 .
For example, raise it to 205Kg/cm 2 . That is,
When the pressurizing screw 18 is tightened, the oil pressure inside the floating nut 10 increases, and this oil pressure becomes
Since it acts on the lower surface of the pressure detection rod 32,
When the oil pressure in the floating nut 10 becomes higher than the oil pressure in the pressure measurement oil chamber 28 of the pressure sensing device 21, the pressure detection rod 32 rises, and the volume in the pressure measurement oil chamber 28 decreases with this rise. Therefore, the oil pressure in the pressure measuring oil chamber 28 increases. Then, until the collar 32a of the pressure detection rod 32 reaches the upper limit position, the pressure detection rod 3
Since the force acting on the upper end surface of 2 and the force acting on the lower end surface of
Therefore, the oil pressure in the floating nut 10 can be detected as the gauge pressure in the Bourdon tube 24. The above operation involves the hydraulic pressure inside the floating nut 10,
This is a rough adjustment to keep the oil pressure in the pressure measuring oil chamber 28 close to the set value, that is, 200 kg/cm 2 .
(6) 次いで、調整スクリユー２９を若干緩めてゲ
ージ圧を200Kg／cm2程度に再び降下させる。こ
の状態では、圧力検出用ロツド３２の３２ａは
上昇限位置又は中間位置にある。(6) Next, loosen the adjusting screw 29 slightly to lower the gauge pressure to about 200 kg/cm 2 again. In this state, 32a of the pressure detection rod 32 is at the upper limit position or at the intermediate position.
(7) 次いで、加圧スクリユー１８を若干緩めてゲ
ージ圧を195Kg／cm2程度にまで降下させる。こ
の操作により、圧力検出用ロツド３２のつば３
２ａが上昇限位置にないことを確認することが
できる。(7) Next, loosen the pressurizing screw 18 slightly to lower the gauge pressure to about 195 kg/cm 2 . By this operation, the collar 3 of the pressure detection rod 32
It can be confirmed that 2a is not at the upper limit position.
(8) 次いで、加圧スクリユー１８を締めてゲージ
圧を設定値、すなわち200Kg／cm2に上昇させる。
以上の操作によりフローテイングナツト１０内
の油圧を設定圧にする操作が完了し、取付け用
部材３６を回わしてこれを圧力感知装置接続部
１９から外すことにより、圧力感知装置２１を
フローテイングナツト１０から取り外す。この
時、逆止弁２７のボール２７ｃが円筒孔２７ａ
を閉ざす。(8) Next, tighten the pressurizing screw 18 to increase the gauge pressure to the set value, that is, 200 Kg/cm 2 .
The above operation completes the operation of setting the oil pressure in the floating nut 10 to the set pressure, and by turning the mounting member 36 and removing it from the pressure sensing device connection part 19, the pressure sensing device 21 is attached to the floating nut. Remove from 10. At this time, the ball 27c of the check valve 27 is inserted into the cylindrical hole 27a.
close.
以上の(3)〜(8)の操作において、加圧スクリユー
１８および調整スクリユー２９の締めあるいは緩
めをくり返すのは、圧力の設定値200Kg／cm2近傍
に粗調整すること、および、その状態で圧力検出
用ロツド３２のつば３２ａが上昇限、下降限位置
でなく確実に中間位置に存在せしめることの目的
による。したがつて、次の簡便な手順によること
もできる。すなわち、加圧スクリユー１８および
調整スクリユー２９を緩めた前述(3)の状態から調
整スクリユー２９を締めて測圧用油室２８内の油
圧を上昇させる際（(4)の操作に対応する）に、
200Kg／cm2に上昇させるのでなく例えば若干低い
195Kg／cm2に上昇させ、この時圧力検出用ロツド
３２のつば３２ａは下降限にあるから、この状態
から加圧スクリユー１８を締めてゲージ圧を直接
設定値である200Kg／cm2に上昇させるという操作
である。この簡便な方法でも、ブルドン管２４の
指針の動きを注意して見て、指針がまだ上昇中の
状態で設定値の200Kg／cm2に達する場合であれば、
つば３２ａが上昇限位置に達しない釣合い状態に
あるので、フローテイングナツト１０内の油圧が
ゲージ圧として正しく測定できる。 In the above operations (3) to (8), the reason for repeatedly tightening or loosening the pressure screw 18 and adjustment screw 29 is to coarsely adjust the pressure to around the set value of 200 kg/cm 2 and to maintain its condition. The purpose is to ensure that the collar 32a of the pressure detection rod 32 is located at an intermediate position rather than at the upper limit or lower limit position. Therefore, the following simple procedure can also be used. That is, when increasing the oil pressure in the pressure measuring oil chamber 28 by tightening the adjusting screw 29 from the above-mentioned state (3) in which the pressurizing screw 18 and the adjusting screw 29 are loosened (corresponding to the operation (4)),
Rather than raising it to 200Kg/cm 2 , for example, it is slightly lower.
At this time, the collar 32a of the pressure detection rod 32 is at its lowering limit, so from this state, tighten the pressure screw 18 and directly raise the gauge pressure to the set value of 200Kg/cm 2. This is the operation. Even with this simple method, if you carefully watch the movement of the pointer of the Bourdon tube 24 and reach the set value of 200 kg/cm 2 while the pointer is still rising,
Since the flange 32a is in a balanced state in which it does not reach the upper limit position, the oil pressure inside the floating nut 10 can be accurately measured as gauge pressure.
上述の如きフローテイングナツト１０内の油圧
の測定においては、ブルドン管２４内に流入する
油は圧力感知装置２１側の容積大なる測圧用油室
２８内の油であり、その油量はブルドン管２４を
作動させるに充分な量である。一方、圧力測定時
に、フローテイングナツト１０内の油は、小径筒
部３５ａ内の圧力検出用ロツド３２下端面下方空
間に流入するのみで、その容積はごくわずかであ
るから、フローテイングナツト１０内の小なる油
量でも充分に対応できる。このように、本考案に
おいては、フローテイングナツト１０内の油を直
接ブルドン管２４に流入させるものでなく、圧力
検出ロツド３２を介し油圧としてブルドン管２４
に伝達するものであるから、フローテイングナツ
ト１０内の油量が少ないにもかかわらず、ブルド
ン管２４により油圧を直接測定することができ
る。 In measuring the oil pressure in the floating nut 10 as described above, the oil flowing into the Bourdon tube 24 is the oil in the pressure measuring oil chamber 28, which has a large volume on the side of the pressure sensing device 21, and the amount of oil flows into the Bourdon tube 24. This amount is sufficient to operate 24. On the other hand, during pressure measurement, the oil in the floating nut 10 only flows into the space below the lower end surface of the pressure detection rod 32 in the small diameter cylindrical portion 35a, and its volume is very small. Even a small amount of oil can be used. As described above, in the present invention, the oil in the floating nut 10 is not directly flowed into the Bourdon tube 24, but is converted into oil pressure into the Bourdon tube 24 via the pressure detection rod 32.
Therefore, even though the amount of oil in the floating nut 10 is small, the oil pressure can be directly measured by the Bourdon tube 24.
以上の如き操作をしてフローテイングナツト１
０の締め付けを行つた丸刃工具においては、ま
ず、各丸刃２に対する押圧力が油圧を受けたピス
トンピン１６により与えられるものであり、ピス
トンピン１６には均等な力が作用するから、丸刃
２は正しく軸線方向の力を受け、軸線に対して高
精度で直角度を保つてアーバー軸１に締付け固定
される。そして、本考案においてはさらに、フロ
ーテイングナツト１０内の油圧、つまり、油室１
４の油圧を所望の圧力に正確に調整することがで
きるから、フローテイングナツト１０による丸刃
２に対する押圧力を所望の最適の大きさとするこ
とができる。したがつて、各丸刃２の軸線方向の
ピツチを充分高い精度で所望のものとすることが
でき、かつ、上刃側丸刃工具の丸刃と下刃側丸刃
工具の丸刃との軸線方向のスキマを正しく設定す
ることができる。 Perform the above operations to remove floating nuts 1.
In a round blade tool that has been tightened to 0, firstly, the pressing force on each round blade 2 is given by the piston pin 16 that receives hydraulic pressure, and since equal force acts on the piston pin 16, the round blade The blade 2 receives a force in the axial direction correctly and is fastened and fixed to the arbor shaft 1 while maintaining a perpendicular angle to the axis with high precision. Further, in the present invention, the oil pressure inside the floating nut 10, that is, the oil chamber 1
4 can be accurately adjusted to a desired pressure, the pressing force of the floating nut 10 against the round blade 2 can be set to the desired optimum magnitude. Therefore, the pitch in the axial direction of each round blade 2 can be set to the desired pitch with sufficiently high accuracy, and the pitch between the round blade of the upper round blade tool and the round blade of the lower blade side tool can be adjusted to a desired value. The gap in the axial direction can be set correctly.
なお、実施例において圧力感知装置接続部１９
は、逆止弁２７を設け、圧力感知装置２１の先端
の小径筒部３５ａを逆止弁２７の円筒孔２７ａに
嵌入させる構造であるが、これに限らず、圧力感
知装置の圧力検出用ロツド３２の下端を嵌入させ
てフローテイングナツト１０内の油圧を圧力検出
用ロツド３２の下端面に作用せしめ得るものであ
ればよい。つまり、フローテイングナツト１０内
の油圧を圧力検出用ロツド３２を介して外部に伝
達させ得るものであればよい。そしてまた、本考
案のフローテイングナツト１０に使用する圧力感
知装置は、摺動可能な圧力検出用ロツド３２を備
え、この圧力検出用ロツド３２の上端面に連通す
る測圧用油室２８を備え、この測圧用油室２８の
容積を増減させる調整手段を備えたものであれば
よい。 In addition, in the embodiment, the pressure sensing device connection part 19
has a structure in which a check valve 27 is provided and a small diameter cylindrical portion 35a at the tip of the pressure sensing device 21 is fitted into a cylindrical hole 27a of the check valve 27, but the structure is not limited to this, and the pressure sensing rod of the pressure sensing device Any rod may be used as long as the lower end of the pressure detection rod 32 can be fitted therein and the hydraulic pressure inside the floating nut 10 can be applied to the lower end surface of the pressure detection rod 32. In other words, any mechanism that can transmit the hydraulic pressure inside the floating nut 10 to the outside via the pressure detection rod 32 may be used. Furthermore, the pressure sensing device used in the floating nut 10 of the present invention includes a slidable pressure detection rod 32, and a pressure measurement oil chamber 28 communicating with the upper end surface of the pressure detection rod 32. Any device may be used as long as it is provided with an adjusting means for increasing or decreasing the volume of the pressure measuring oil chamber 28.
以上説明したように、本考案の丸刃工具は、複
数個の丸刃をアーバー軸に組み込み少なくともア
ーバー軸の一端側でアーバー軸に螺合するナツト
により丸刃をアーバー軸軸線方向に締め付けて丸
刃をアーバー軸に固定するものであり、このナツ
ト（ナツト本体）には、ナツトの内部に設けられ
た油室に一端を臨ませ、かつ他端をナツトの側面
に出没自在になされたピストンピンがナツトの軸
線方向へ摺動自在に配置され、ナツトの他方の側
面または外周部には、前記油室の油圧を増減させ
て前記ピストンピンを摺動させる加圧操作部材
と、前記油室に連通するとともに、油室内の油が
外部に流出するのを阻止する逆止弁を有する圧力
感知装置接続部とが設けられ、この圧力感知装置
接続部に圧力感知装置が着脱自在に接続されて構
成されている。しかも、前記圧力感知装置は、前
記圧力感知装置接続部に接続されたときに前記逆
止弁の弁体を弁座から離間させて油室内の油を内
部に導入する筒部と、この筒部の内部にその軸線
方向へ摺動自在かつ液密に挿入されるとともに一
端を前記弁体に臨ませた圧力検出用ロツドと、こ
の圧力検出用ロツドの他端が臨み、圧力検出用ロ
ツドによつて前記油室内の油圧が伝達される測圧
用油室と、この測圧用油室の容積を増減させる調
整部材と、前記測圧用油室の油圧を測定する検出
部とを備えている。したがつて、圧力検出用各丸
刃は、フローテイングナツトのピストンピンによ
り正しくアーバー軸軸線方向の押圧力を受け、ア
ーバー軸軸線に対する高精度の直角度を確保した
締付け固定がなされ、丸刃回転時の側面フレが抑
えられる。さらに、圧力検出用ロツドを備えた圧
力感知装置を用いることにより、フローテイング
ナツト内の油の容量がきわめて小量にもかかわら
ず、フローテイングナツト内の油圧をブルドン管
等のゲージ圧として直接検出することができる。
したがつて、フローテイングナツトによる丸刃に
対する押圧力を所望のとおり正確に設定して丸刃
の締付け固定を行うことができる。したがつて、
丸刃工具に組み込まれる各丸刃のピツチに関して
きわめて高い精度を得ることができ、かつ、各丸
刃のピツチを再現性よくコントロールすることが
でき、上下一対として用いる際の上下刃間のピツ
チ誤差を小さくすることができる。 As explained above, the round blade tool of the present invention incorporates a plurality of round blades into an arbor shaft, and tightens the round blades in the axial direction of the arbor shaft with a nut screwed onto the arbor shaft at least on one end side of the arbor shaft. The blade is fixed to the arbor shaft, and this nut (the nut body) has a piston pin that has one end facing the oil chamber provided inside the nut and the other end that can freely protrude and retract from the side of the nut. is arranged to be slidable in the axial direction of the nut, and on the other side or outer periphery of the nut, there is a pressurizing operation member that increases or decreases the hydraulic pressure in the oil chamber to slide the piston pin, and A pressure sensing device connection portion is provided which communicates with the pressure sensing device and has a check valve that prevents oil in the oil chamber from flowing out to the outside, and the pressure sensing device is detachably connected to the pressure sensing device connection portion. has been done. Moreover, the pressure sensing device includes a cylindrical portion that separates the valve body of the check valve from the valve seat and introduces oil in the oil chamber into the interior when the pressure sensing device is connected to the pressure sensing device connection portion; A pressure detection rod is slidably and fluid-tightly inserted into the valve body in its axial direction and has one end facing the valve body, and the other end of the pressure detection rod faces the valve body. The pressure measuring oil chamber is provided with a pressure measuring oil chamber to which the oil pressure in the pressure measuring oil chamber is transmitted, an adjusting member for increasing or decreasing the volume of the pressure measuring oil chamber, and a detection unit for measuring the oil pressure in the pressure measuring oil chamber. Therefore, each round blade for pressure detection receives a pressing force in the direction of the arbor shaft axis correctly by the piston pin of the floating nut, is tightened and fixed to ensure a highly accurate perpendicularity to the arbor shaft axis, and the round blade rotates. Side lateral deflection is suppressed. Furthermore, by using a pressure sensing device equipped with a pressure detection rod, the oil pressure inside the floating nut can be directly detected as the gauge pressure of a Bourdon tube, etc., even though the volume of oil inside the floating nut is extremely small. can do.
Therefore, the pressing force of the floating nut against the round blade can be set accurately as desired, and the round blade can be tightened and fixed. Therefore,
It is possible to obtain extremely high accuracy regarding the pitch of each round blade incorporated in a round blade tool, and to control the pitch of each round blade with good reproducibility, reducing the pitch error between the upper and lower blades when used as a pair. can be made smaller.
第１図は従来の丸刃工具の中心線片側断面の側
面図、第２図は他の従来の丸刃工具の中心線片側
断面の側面図、第３図は第２図における要部拡大
図、第４図は第３図におけるフローテイングナツ
トの要部断面図、第５図以下は本考案の一実施例
を示すもので、第５図は丸刃工具の中心線片側断
面の側面図、第６図イは第５図におけるフローテ
イングナツトのＡ矢視正面図、同図ロは同図イに
おける一部Ｂ−Ｂ線断面の側面図、第７図イは第
５図におけるＣ矢視正面図、同図ロは同図イにお
ける一部Ｄ−Ｄ線断面の側面図、第８図は第７図
イにおけるＥ−Ｅ線要部断面図、第９図はフロー
テイングナツトに取り付けた圧力感知装置の正面
図、第１０図は同側面図、第１１図は第１０図に
おけるＦ−Ｆ線断面図、第１２図は小径筒部先端
の拡大図である。
１……アーバー軸、１ａ……丸刃取付け部、１
ｂ……ねじ部、１ｃ……固定鍔部、２……丸刃、
１０……フローテイングナツト、１１……ねじ
孔、１２……ナツト本体（ナツト）、１３……シ
リンダ筒、１４……油室、１５……連通路、１６
……ピストンピン、１７……加圧用油室、１８…
…加圧スクリユー（加圧操作部材）、１９……圧
力感知装置接続部、２１……圧力感知装置、２２
……圧力伝達部、２３……加圧ユニツト部、２４
……ブルドン管、２５……小孔、２７……逆止
弁、２７ａ……円筒孔、２７ｃ……ボール（弁
体）、２８……測圧用油室、２９……調整スクリ
ユー、３２……圧力検出用ロツド、３２ａ……つ
ば、３４……円筒孔、３５……本体部、３５ａ…
…小径筒部（筒部）、３５ｃ……凹部、３５ｄ…
…切欠き、３６……取付け操作部材。
Figure 1 is a side view of a conventional round-blade tool with one side in section along the center line, Figure 2 is a side view of another conventional round-blade tool with one side in cross-section along the center line, and Figure 3 is an enlarged view of the main parts in Figure 2. , FIG. 4 is a sectional view of the main part of the floating nut shown in FIG. 3, FIG. 5 and the following show an embodiment of the present invention, and FIG. 6A is a front view of the floating nut in FIG. 5 as seen from arrow A, FIG. Front view, Figure B is a side view of a section taken along line D-D in Figure A, Figure 8 is a cross-sectional view of the main part taken along line E-E in Figure 7A, Figure 9 is a side view of the main part taken along line E-E in Figure 7A, and Figure 9 is a side view of the main part taken along line E-E in Figure 7A. FIG. 10 is a front view of the pressure sensing device, FIG. 10 is a side view thereof, FIG. 11 is a sectional view taken along the line F--F in FIG. 10, and FIG. 12 is an enlarged view of the tip of the small diameter cylindrical portion. 1...Arbor shaft, 1a...Round blade mounting part, 1
b...Threaded part, 1c...Fixed collar part, 2...Round blade,
10...Floating nut, 11...Screw hole, 12...Nut body (nut), 13...Cylinder tube, 14...Oil chamber, 15...Communication path, 16
... Piston pin, 17 ... Pressurizing oil chamber, 18 ...
... Pressure screw (pressure operation member), 19 ... Pressure sensing device connection part, 21 ... Pressure sensing device, 22
... Pressure transmission section, 23 ... Pressure unit section, 24
... Bourdon tube, 25 ... Small hole, 27 ... Check valve, 27a ... Cylindrical hole, 27c ... Ball (valve body), 28 ... Oil chamber for pressure measurement, 29 ... Adjustment screw, 32 ... Pressure detection rod, 32a...Brim, 34...Cylindrical hole, 35...Main body, 35a...
...Small diameter cylinder part (cylindrical part), 35c...Concave part, 35d...
...Notch, 36...Installation operation member.
Claims (1)
もアーバー軸の一端側でアーバー軸に螺合するナ
ツトにより丸刃をアーバー軸軸線方向に締め付け
て丸刃をアーバー軸に固定する丸刃工具であつ
て、前記ナツトには、ナツトの内部に設けられた
油室に一端を臨ませ、かつ他端をナツトの側面に
出没自在になされたピストンピンがナツトの軸線
方向へ摺動自在に配置され、ナツトの他方の側面
または外周部には、前記油室の油圧を増減させて
前記ピストンピンを摺動させる加圧操作部材と、
前記油室に連通するとともに、油室内の油が外部
に流出するのを阻止する逆止弁を有する圧力感知
装置接続部とが設けられ、この圧力感知装置接続
部に圧力感知装置が着脱自在に接続されて構成さ
れており、前記圧力感知装置は、前記圧力感知装
置接続部に接続されたときに前記逆止弁の弁体を
弁座から離間させて油室内の油を内部に導入する
筒部と、この筒部の内部にその軸線方向へ摺動自
在かつ液密に挿入されるとともに一端を前記弁体
に臨ませた圧力検出用ロツドと、この圧力検出用
ロツドの他端が臨み、圧力検出用ロツドによつて
前記油室内の油圧が伝達される測圧用油室と、こ
の測圧用油室の容積を増減させる調整部材と、前
記測圧用油室の油圧を測定する検出部とを備えて
いることを特徴とする丸刃工具。 A round blade tool that incorporates a plurality of round blades into an arbor shaft and tightens the round blades in the axial direction of the arbor shaft using a nut screwed onto the arbor shaft at least on one end side of the arbor shaft to fix the round blades to the arbor shaft, A piston pin is disposed in the nut so as to be slidable in the axial direction of the nut, and has one end facing an oil chamber provided inside the nut and the other end capable of protruding and retracting from the side surface of the nut. A pressurizing operation member that increases or decreases the oil pressure in the oil chamber and slides the piston pin on the other side or the outer periphery;
A pressure sensing device connecting portion is provided which communicates with the oil chamber and has a check valve for preventing oil in the oil chamber from flowing out to the outside, and the pressure sensing device is detachably attached to the pressure sensing device connecting portion. The pressure sensing device is configured to include a cylinder that, when connected to the pressure sensing device connection portion, separates the valve body of the check valve from the valve seat and introduces oil in the oil chamber into the cylinder. a pressure detection rod that is slidably and fluid-tightly inserted into the cylindrical portion in its axial direction and has one end facing the valve body; the other end of the pressure detection rod faces the valve body; A pressure measuring oil chamber to which the hydraulic pressure in the oil chamber is transmitted by a pressure detecting rod, an adjusting member for increasing or decreasing the volume of the pressure measuring oil chamber, and a detection unit for measuring the oil pressure in the pressure measuring oil chamber. A round blade tool characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18434683U JPS6091392U (en) | 1983-11-29 | 1983-11-29 | round blade tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18434683U JPS6091392U (en) | 1983-11-29 | 1983-11-29 | round blade tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6091392U JPS6091392U (en) | 1985-06-22 |
| JPH0337907Y2 true JPH0337907Y2 (en) | 1991-08-09 |
Family
ID=30398737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18434683U Granted JPS6091392U (en) | 1983-11-29 | 1983-11-29 | round blade tools |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6091392U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523787U (en) * | 1978-08-03 | 1980-02-15 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS601931Y2 (en) * | 1979-05-18 | 1985-01-19 | 富士写真フイルム株式会社 | Round blade tool fastening device |
-
1983
- 1983-11-29 JP JP18434683U patent/JPS6091392U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523787U (en) * | 1978-08-03 | 1980-02-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6091392U (en) | 1985-06-22 |
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