JPS5811484Y2 - Hydraulic feeding device of processing unit - Google Patents
Hydraulic feeding device of processing unitInfo
- Publication number
- JPS5811484Y2 JPS5811484Y2 JP1978050566U JP5056678U JPS5811484Y2 JP S5811484 Y2 JPS5811484 Y2 JP S5811484Y2 JP 1978050566 U JP1978050566 U JP 1978050566U JP 5056678 U JP5056678 U JP 5056678U JP S5811484 Y2 JPS5811484 Y2 JP S5811484Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- pressure
- circuit
- valve
- switching
- 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
- Fluid-Pressure Circuits (AREA)
Description
【考案の詳細な説明】
本考案は、トランスファーマシン等の加工ユニットの送
り装置に係り、特に該送りを油圧によって行う油圧送り
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feeding device for a processing unit such as a transfer machine, and more particularly to a hydraulic feeding device that performs the feeding using hydraulic pressure.
この種の送り装置は、一般に加工のための所定送り速度
に対しその前後を早送りとして加工サイクルを短縮して
いる。This type of feeding device generally shortens the machining cycle by rapidly feeding before and after a predetermined feed rate for machining.
本考案は、早送りに差動油圧回路を用い、小容量のポン
プでより高速の早送りを得ると共に、この早送りと加工
のための所定速度による送りを被加工物に合せて円滑か
つ確実に行ない得る加工ユニットの油圧送り装置を提供
するにある。The present invention uses a differential hydraulic circuit for rapid traverse to obtain higher-speed rapid traverse with a small-capacity pump, and can smoothly and reliably perform this rapid traverse and feeding at a predetermined speed for machining in accordance with the workpiece. To provide a hydraulic feed device for a processing unit.
以下本考案の一実施例を示す第１図について説明する。FIG. 1 showing an embodiment of the present invention will be described below.
１はシリンダで゛、そのピストン２のピストンロッド３
はドリルまたはバイト等の工具２１を取付けた加工ヘッ
ド２０に連結され、該加工ヘッド２０に送りを付与する
ようになっている。1 is a cylinder, and its piston 2 has a piston rod 3
is connected to a machining head 20 to which a tool 21 such as a drill or a cutting tool is attached, and feed is applied to the machining head 20.
なお、工具２１を送らずに被加工物２２側に送りを与え
る方式の加工ユニットにおいては、ピストンロッド３を
被加工物２２側に連結すればよいことは言うまでもない
。It goes without saying that in a processing unit that feeds the workpiece 22 without feeding the tool 21, the piston rod 3 may be connected to the workpiece 22.
なお、本実施例では工具２１を送る方式について説明す
る。In this embodiment, a method for feeding the tool 21 will be explained.
Ｐは油圧源、Ｔはタンクであり、４は該油圧源Ｐとタン
クＴをシリンダ１のヘッド側とロッド側に交互に接続す
るための方向切換弁である。P is a hydraulic power source, T is a tank, and 4 is a directional control valve for alternately connecting the hydraulic power source P and the tank T to the head side and the rod side of the cylinder 1.
したがって方向切換弁４からシリンダ１に通ずる回路５
，６は方向切換弁４の切換えにより、供給側になったり
戻り側になったりするものであるが、説明を簡明にする
ため、工具２１に送りを付与するときに供給側となる回
路すなわち油圧源Ｐから方向切換弁４を介してシリンダ
１のヘッド側に通ずる回路５を供給回路、他側のシリン
ダ１のロッド側から方向切換弁４を介してタンクＴへ通
ずる回路６を戻り回路と称する。Therefore, the circuit 5 leading from the directional valve 4 to the cylinder 1
, 6 are switched to the supply side or return side by switching the directional control valve 4, but for the sake of simplicity, the circuit that becomes the supply side when feeding is applied to the tool 21, that is, the hydraulic pressure. A circuit 5 leading from the source P to the head side of the cylinder 1 via the directional control valve 4 is referred to as a supply circuit, and a circuit 6 leading to the tank T from the rod side of the cylinder 1 on the other side via the directional control valve 4 is referred to as a return circuit. .
戻り回路６には、ピストンロッド３に設けたカム７にて
作動される減速弁組立８が接続されている。A reduction valve assembly 8 actuated by a cam 7 provided on the piston rod 3 is connected to the return circuit 6 .
この減速弁組立８は、前記カム７にて開閉される開閉弁
８ａと、同開閉弁８ａによって開閉されるバイパス回路
８ｄに対し並列に接続された好ましくは圧力補償付きの
流量調整弁８ｂと、さらにはこれらに対して並列に接続
され、シリンダ１からの戻り油を制限し、これと逆の流
れを自由にするチェック弁８Ｃとからなっている。This deceleration valve assembly 8 includes an on-off valve 8a that is opened and closed by the cam 7, and a flow rate regulating valve 8b, preferably with pressure compensation, connected in parallel to a bypass circuit 8d that is opened and closed by the on-off valve 8a. Furthermore, it includes a check valve 8C which is connected in parallel to these and restricts the return oil from the cylinder 1 and allows the flow in the opposite direction.
９は差動回路切換弁で、供給回路５の圧力によって切換
えを制御されるようになっており、戻り回路６の途中を
しゃ断し回路１０によりチェック弁１１を介してシリン
ダ１のロッド側を供給回路５に接続する差動位置と、シ
リンダ１のロッド側をタンクＴへ接続する非差動位置を
有している。Reference numeral 9 designates a differential circuit switching valve whose switching is controlled by the pressure of the supply circuit 5, which cuts off the return circuit 6 in the middle and supplies the rod side of the cylinder 1 via the check valve 11 to the circuit 10. It has a differential position where it is connected to the circuit 5 and a non-differential position where the rod side of the cylinder 1 is connected to the tank T.
・なお、この差動回路切換弁９は供給回路５が低圧のと
き図示の差動位置を取り、カム７によって減速弁組立８
が作動することにより供給回路５の圧力が上昇したとき
、その圧力上昇によって非差動位置へ切換わるように切
換圧力を設定されている。・This differential circuit switching valve 9 assumes the differential position shown in the figure when the supply circuit 5 is at low pressure, and the cam 7 controls the reduction valve assembly 8.
The switching pressure is set so that when the pressure in the supply circuit 5 rises due to the operation of , the pressure rise causes switching to the non-differential position.
前記差動回路切換弁９に対しては、シリンダ１からの戻
り油の流れを阻止し、これと逆の流れを自由にするチェ
ック弁１２が並列に接続されている。A check valve 12 is connected in parallel to the differential circuit switching valve 9 to block the flow of return oil from the cylinder 1 and to allow the opposite flow.
なお、図中の１３．１４はピストンロッド３の前進限と
後退限を検知するリミットスイッチ、１５はドックであ
る。Note that 13 and 14 in the figure are limit switches that detect the forward and backward limits of the piston rod 3, and 15 is a dock.
次いで本装置の動作について説明する。Next, the operation of this device will be explained.
まず、カム７として加工のために所定送り速度で送る必
要のある範囲に合致させたものを取付ける。First, a cam 7 is installed that matches the range in which it is necessary to feed at a predetermined feed rate for machining.
次いで、方向切換弁４を図において左方の前進位置へ切
換えれば、油圧源Ｐから供給回路５を通ってシリンダ１
のヘッド側へ圧油が供給され、ピストン２を前進させる
。Next, when the directional control valve 4 is switched to the forward position on the left side in the figure, the hydraulic pressure source P passes through the supply circuit 5 to the cylinder 1.
Pressure oil is supplied to the head side of the piston 2 to move the piston 2 forward.
このときピストン２には負荷が作用せず、またシリンダ
１のロッド側からの戻り油は減速弁組立８の開閉弁８ａ
が開いているためバイパス回路８ｄを通って自由に流れ
る。At this time, no load is applied to the piston 2, and the return oil from the rod side of the cylinder 1 is absorbed by the on-off valve 8a of the reduction valve assembly 8.
Since it is open, it flows freely through the bypass circuit 8d.
このためピストン２は小さな力で前進し、供給回路５の
圧力はそれ程上昇せず、差動回路切換弁９は切換わらず
に図示の状態に保たれる。For this reason, the piston 2 moves forward with a small force, the pressure in the supply circuit 5 does not increase much, and the differential circuit switching valve 9 remains in the illustrated state without switching.
そこで、差動回路切換弁９はシリンダ１のロッド側から
の戻り油を供給回路５へ戻し、いわゆる差動回路を構成
してピストン２を高速で前進させる。Therefore, the differential circuit switching valve 9 returns the return oil from the rod side of the cylinder 1 to the supply circuit 5, forming a so-called differential circuit to move the piston 2 forward at high speed.
かくして工具２１が被加工物２２に接触する若干手前に
達すると、カム７が減速弁組立８を作動させて開閉弁８
ａを閉塞する。Thus, when the tool 21 reaches a point slightly before contacting the workpiece 22, the cam 7 operates the reduction valve assembly 8 to open the on-off valve 8.
occlude a.
この開閉弁８ａの閉塞により、戻り油は流量調整弁８ｂ
のみを通って排出され、ピストン２を予じめ定めた所定
送り速度で前進させる。Due to the closure of this on-off valve 8a, the return oil is transferred to the flow rate regulating valve 8b.
The piston 2 is discharged through only the piston 2 and moves the piston 2 forward at a predetermined feed rate.
他方、この開閉弁８ａの閉塞により、戻り油の圧力が上
昇し、これに応じて供給回路５の圧力も上昇する。On the other hand, due to the closure of the on-off valve 8a, the pressure of the return oil increases, and the pressure of the supply circuit 5 increases accordingly.
この圧力上昇により、差動回路切換弁９は非差動位置へ
切換えられる。This pressure increase causes the differential circuit switching valve 9 to be switched to the non-differential position.
そこでシリンダ１からの戻り油は、方向切換弁４を介し
てタンクＴへ戻され、シリンダ１のヘッド側へは油圧源
Ｐからの供給流量のみが送られ、前記差動回路の場合よ
り大きな力でピストン２を前進可能にする。Therefore, the return oil from the cylinder 1 is returned to the tank T via the directional control valve 4, and only the supply flow rate from the hydraulic source P is sent to the head side of the cylinder 1, and a larger force than in the case of the differential circuit is sent to the head side of the cylinder 1. to enable piston 2 to move forward.
そこで、工具２１は所定送り速度になされ、かつより大
きな負荷に抗し得る状態になった後に、被加工物２２に
接触し、加工を行なう。Therefore, after the tool 21 is brought to a predetermined feed rate and is in a state where it can withstand a larger load, it comes into contact with the workpiece 22 and performs machining.
この加工中、減速弁組立８の開閉弁８ａはカム７によっ
て閉塞状態に保たれるので、ピストン２すなわち工具２
１は、流量調整弁８ｂによって定められた所定送り速度
で送られ加工を完了する。During this machining, the on-off valve 8a of the reduction valve assembly 8 is kept closed by the cam 7, so the piston 2, that is, the tool 2
1 is fed at a predetermined feed rate determined by the flow rate regulating valve 8b to complete the machining.
加工が完了した後、若干ピストン２が前進するとドッグ
１５がリミットスイッチ１３を作動させ方向切換弁４を
図において右方の後退位置へ切換え、油圧源Ｐから方向
切換弁４、チェック弁１２および減速弁組立８中のチェ
ック弁８Ｃを介してシリンダ１のロッド側へ圧油を供給
し、ピストン２を図において右行させ、図示の状態に復
帰させる。After machining is completed, when the piston 2 moves forward a little, the dog 15 activates the limit switch 13 and switches the directional control valve 4 to the backward position on the right side in the figure, and the hydraulic source P supplies the directional control valve 4, check valve 12, and deceleration. Pressure oil is supplied to the rod side of the cylinder 1 through the check valve 8C in the valve assembly 8, and the piston 2 is moved to the right in the figure to return to the state shown.
前述した実施例における方向切換弁４は、中立位置にお
いて油圧源Ｐ側の供給回路５をブロックして図示しない
他の作動装置のために油圧源Ｐの圧力を保持し得るよう
になっているため、該供給回路５から回路１０を介して
シリンダ１のロッド側へ圧油が流入しようとする流れを
チェック弁１１によって阻止するようにしているが、第
２図に示すように、中立位置において油圧源Ｐをタンク
Ｔへ開放し、シリンダ１側の供給回路５と戻り回路６を
ブロックするようにした方向切換弁４′を用いれば、前
記チェック弁１１は不用であることは言うまでもない。The directional control valve 4 in the embodiment described above is designed to block the supply circuit 5 on the hydraulic source P side in the neutral position and maintain the pressure of the hydraulic source P for other actuating devices (not shown). The check valve 11 prevents the flow of pressure oil from the supply circuit 5 to the rod side of the cylinder 1 via the circuit 10, but as shown in FIG. It goes without saying that the check valve 11 is unnecessary if a directional control valve 4' is used which opens the source P to the tank T and blocks the supply circuit 5 and return circuit 6 on the cylinder 1 side.
また、第１図に示した実施例では、減速弁組立８として
開閉弁８ａと流量調整弁８ｂを並列に設けた例を示した
が、これに限らず第２図に示すような切換弁８ａ′と流
量調整弁８ｂとを組合せて、バイパス回路８ｄを開閉す
るようにしてもよい等、種々変更可能であることは言う
までもない。Further, in the embodiment shown in FIG. 1, an example was shown in which the on-off valve 8a and the flow rate adjustment valve 8b were provided in parallel as the deceleration valve assembly 8, but the present invention is not limited to this, and the switching valve 8a as shown in FIG. It goes without saying that various modifications can be made, such as opening and closing the bypass circuit 8d by combining the flow control valve 8b and the flow rate regulating valve 8b.
以上述べたように本考案によれば、カム、減速弁組立お
よび差動回路切換弁の相互関連構成により、被加工物に
応じて差動回路を用いた早送りと所定の送り速度による
加工とを円滑かつ適確に行わせることができ、しかも装
置は、簡潔でｂす、カムを変えることにより種々の被加
工物に容易に適用できる等の効果が得られる。As described above, according to the present invention, the interrelated configuration of the cam, the reduction valve assembly, and the differential circuit switching valve allows rapid traverse using the differential circuit and machining at a predetermined feed speed to be performed depending on the workpiece. The process can be carried out smoothly and accurately, and the apparatus is simple and can be easily applied to various workpieces by changing the cam.
第１図は本考案による加工ユニットの油圧送り装置の一
実施例を示す図、第２図は本考案の他の実施例を示す図
である。
１・・・・・・シリンダ、２・・・・・・ピストン、４
．４’・・・・・・方向切換弁、５・・・・・・供給回
路、６・・・・・・戻り回路、７・・・・・・カム、８
．８’・・・・・減速弁組立、９・・・・・・差動回路
切換弁、Ｂｃ。
１１．１２・・・・・・チェック弁、１３．１４・・・
・・・リミットスイッチ、１５・・・・・・ドック、２
０・・・・・・加工ヘッド、２１・・・・・・工具、２
２・・・・・・被加工物。FIG. 1 is a diagram showing one embodiment of a hydraulic feed device for a processing unit according to the present invention, and FIG. 2 is a diagram showing another embodiment of the present invention. 1...Cylinder, 2...Piston, 4
．． 4'... Directional switching valve, 5... Supply circuit, 6... Return circuit, 7... Cam, 8
．． 8'...Reduction valve assembly, 9...Differential circuit switching valve, Bc. 11.12... Check valve, 13.14...
...Limit switch, 15...Dock, 2
0... Processing head, 21... Tool, 2
2...Workpiece.
Claims (1)
、同シリンダに対する圧油の給排を正・逆に切換える方
向切換弁と、前記シリンダによって送られる部材に取付
けられたカムと、同カムによって作動され前記工具また
は被加工物に送りを付与しているときのシリンダからの
戻り油の流量を所定値に制限すると共にこれと逆の流れ
を自由にするチェック弁付の減速弁組立と、前記シリン
ダへの供給回路の圧力によって切換えを制御され該圧力
が所定値より低いとき前記戻り油が流れる戻り回路を供
給回路へ接続する差動回路切換弁と、同差動回路切換弁
に対し並列に戻り回路に接続され、シリンダからの戻り
油の流れを阻止しこれと逆の流れを自由にするチェック
弁とからなり、前記カムを所定送り速度が必要な範囲に
わたって設けると共に前記差動回路切換弁の切換圧力を
減速弁組立の作動による供給回路の圧力上昇によって切
換えるように設定してなる加圧ユニットの油圧送り装置
。A cylinder for applying feed to a tool or a workpiece, a directional control valve for switching the supply and discharge of pressure oil to and from the cylinder between forward and reverse directions, a cam attached to the member fed by the cylinder, and a cam attached to the member fed by the cylinder, a reduction valve assembly with a check valve that limits the flow rate of return oil from the cylinder to a predetermined value when actuated to apply feed to the tool or workpiece, and allows a flow in the opposite direction; A differential circuit switching valve whose switching is controlled by the pressure of the supply circuit to the cylinder and which connects the return circuit through which the return oil flows when the pressure is lower than a predetermined value to the supply circuit; The check valve is connected to the return circuit and prevents the flow of return oil from the cylinder and allows the flow in the opposite direction. A hydraulic feed device for a pressurizing unit configured to switch the switching pressure by an increase in pressure in a supply circuit caused by the operation of a reduction valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978050566U JPS5811484Y2 (en) | 1978-04-17 | 1978-04-17 | Hydraulic feeding device of processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978050566U JPS5811484Y2 (en) | 1978-04-17 | 1978-04-17 | Hydraulic feeding device of processing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54152382U JPS54152382U (en) | 1979-10-23 |
| JPS5811484Y2 true JPS5811484Y2 (en) | 1983-03-04 |
Family
ID=28938276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978050566U Expired JPS5811484Y2 (en) | 1978-04-17 | 1978-04-17 | Hydraulic feeding device of processing unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5811484Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030000507A (en) * | 2001-06-25 | 2003-01-06 | 위아 주식회사 | a velocity controller for a tailstock of a lathe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49118175U (en) * | 1973-02-03 | 1974-10-09 |
-
1978
- 1978-04-17 JP JP1978050566U patent/JPS5811484Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54152382U (en) | 1979-10-23 |
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