JPS6146330A - Press fit method of bush - Google Patents
Press fit method of bushInfo
- Publication number
- JPS6146330A JPS6146330A JP16760084A JP16760084A JPS6146330A JP S6146330 A JPS6146330 A JP S6146330A JP 16760084 A JP16760084 A JP 16760084A JP 16760084 A JP16760084 A JP 16760084A JP S6146330 A JPS6146330 A JP S6146330A
- Authority
- JP
- Japan
- Prior art keywords
- press
- bush
- load current
- press fit
- fitting
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、所定の部品に対してブツシュを圧入する方
法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a method of press-fitting a bushing into a predetermined part.
従来の技術
従来、この種のブツシュの圧入方法として例えば特願昭
５７−１４８５７３号に係るものが本出願人により提案
されている。2. Description of the Related Art Conventionally, the present applicant has proposed a method for press-fitting bushings of this type, for example, in Japanese Patent Application No. 148573/1983.
この特願昭５７−１４８５７３号にあっては、ブツシュ
の圧入動作を司る圧入シリンダの流体圧負荷ｔ−監視す
ることによりブツシュの圧入に要する荷重（圧入力）を
検出し、この検出値と基準値とを比較することで圧入力
の正否の判定を行なうことを基本としている。In this patent application No. 57-148573, the load (pressing force) required for press-fitting a bushing is detected by monitoring the fluid pressure load t- of a press-fitting cylinder that controls the press-fitting operation of a bushing, and this detected value is used as a standard. The basic idea is to determine whether the press force is correct or not by comparing the values.
発明が解決しようとする問題点
上記の方法にあっては、圧入アクチュエータとしてシリ
ンダを用い、この圧入シリンダの流体圧負荷金もって圧
入力を監視しているため、圧入速度が一定している保証
がなく、ブツシュのはめ合い誤差によっては圧入速度が
ばらつくことがある。Problems to be Solved by the Invention In the above method, a cylinder is used as the press-fitting actuator, and the press-fitting force is monitored by the fluid pressure load of the press-fitting cylinder, so there is no guarantee that the press-fitting speed is constant. However, the press-fitting speed may vary depending on the fitting error of the bushing.
その結果、圧入条件が変化して判定結果の信頼性低下の
一因となるほか、サイクルタイムが長くなる。As a result, the press-fitting conditions change, which not only causes a decrease in the reliability of the determination results but also lengthens the cycle time.
本発明は、上記の不具合を解消したブツシュの圧入方法
を提供しようとするものである。The present invention aims to provide a method for press-fitting a bushing that eliminates the above-mentioned problems.
問題点を解決するための手段
本発明においては、圧入アクチュエータとして速度制御
サーボモータ駆動方式を採用し、サーボモータの負荷電
流をもって圧入刃金監視する方法とする。Means for Solving the Problems In the present invention, a speed-controlled servo motor drive system is adopted as the press-fit actuator, and a method is adopted in which the press-fit blade is monitored using the load current of the servo motor.
作用
この方法によれば、圧入速度が安定し、信頼性の高い圧
入力判定結果が得られる。Effect: According to this method, the press-in speed is stabilized and highly reliable press-in force determination results can be obtained.
実施例
第１図は本発明方法の一実施例を説明するための図で、
Ｂはブツシュ、ＷはブツシュＢが圧入される被組付部品
である。ブツシュＢは圧入バー１の先端に保持され、他
方、被組付部品Ｗは治具Ｇに位置決め固定されている。Embodiment FIG. 1 is a diagram for explaining an embodiment of the method of the present invention.
B is a bushing, and W is a part to be assembled into which the bushing B is press-fitted. The bush B is held at the tip of the press-fitting bar 1, while the part W to be assembled is positioned and fixed to a jig G.
圧入バーＩｆｆボールスクリュー、シャフト２に螺合し
ておシ、サーボモータ３のはたらきによｐボールスクリ
ュー、シャフト２が回転駆動されることで前後進してブ
ツシュＢを被組付部品Ｗに圧入する。The press-fit bar Iff is screwed onto the ball screw and shaft 2, and by the action of the servo motor 3, the P ball screw and shaft 2 are rotated and moved forward and backward to press the bushing B into the assembled part W. do.
サーボモータ３は速反検出器としてのタコジェネレータ
４を備えてお９、このタコジェネレータ４の出力に基づ
き制御架［５１Ｃよりフィードバック制御される。この
制御装置！１５は図示するように設定器６．速度増幅器
７．を流増幅器８．を流制限器９ｔ−備える。そして、
ブツシュＢの圧入ストロークの中間点Ｓにおいてリミツ
ｔ−；、・１ツチ１０がドッグ１１によってＯＮ作動さ
れると、端子１２カら比較回路１３ＶＣその時のサーボ
モータ３の負荷電元金とり込んで、この電流値と基準値
とを比較することにエフプッシュ圧入力の正否の判定を
行なう。The servo motor 3 is equipped with a tacho generator 4 as a speed/reaction detector 9, and is feedback-controlled by a control rack [51C] based on the output of the tacho generator 4. This control device! 15 is a setting device 6. as shown in the figure. Speed amplifier7. Current amplifier8. A flow restrictor 9t is provided. and,
When the limit 10 is turned on by the dog 11 at the midpoint S of the press-fitting stroke of the bush B, the current load power of the servo motor 3 is taken from the terminal 12 to the comparison circuit 13VC. It is determined whether the F-push pressure input is correct or not by comparing this current value with a reference value.
−ｊ″なわち、本災施例においては、第２図にも示すよ
うに、外部から前進指令を入力し、ブツシュＢ′ｔ−保
持している圧入バー１を、設定器６によって設定された
量だけ定速にて前進させる。そして、圧入バー１は、ブ
ツシュＢが被組付部品Ｗに圧入されにじめてもなおも定
速にて前進し、ブツシュＢが被組付部品Ｗに完全に圧入
される前進限位置で停止する。In other words, in this disaster example, as shown in FIG. The press-fitting bar 1 continues to move forward at a constant speed even after the bushing B is press-fitted into the to-be-assembled part W. It stops at the forward limit position where it is completely press-fitted.
このブツシュＢの正大過程において、ブツシュＢが被組
付部品Ｗに対して半分程度圧入された中。During the expansion process of the bushing B, the bushing B is press-fitted into the part W to be assembled by about half.
間点Ｓでリミットスイッチ１０がＯＮし、この時点から
サーボモータ３の負荷電流工を比較回路１３にとり込ん
で基準値１１と比較し続ける。そして、リミットスイッ
チ１０がＯＮＩ、てからブツシュＢが前進限（圧入限位
置）位置に達するまでの間に、負荷を流工が基準値１１
′ｆ：越えれば正常と判定する。The limit switch 10 is turned on at the intermediate point S, and from this point on, the load current of the servo motor 3 is taken into the comparator circuit 13 and continues to be compared with the reference value 11. Then, after the limit switch 10 turns ON, until the bushing B reaches the forward limit (press-fit limit position) position, the load is adjusted to the reference value 11.
'f: If it exceeds, it is determined to be normal.
一方、負荷電流工が電流制限値いっばいまで流れ、かつ
タイマー（第１図では図示省略してちる）設定時間ｔが
タイムアツプするまでに前進限（圧入限）位置に達しな
いと、圧入力が大きすぎるものとして異常と判定する。On the other hand, if the load current flows up to the current limit value and does not reach the forward limit (press-in limit) position by the time the timer (not shown in Figure 1) set time t expires, the press-in force It is judged as abnormal because it is too large.
また、前進限位置に達しても負荷電流工が基準値ｉｌを
越えないと圧入力が小さすぎるものとして異常と＋」定
する。Furthermore, if the load current does not exceed the reference value il even after reaching the forward limit position, the pressing force is considered to be too small and is determined to be abnormal.
こうして、ブツシュ圧入力に関する判定結果が得られｔ
のち、後退指令を入力することにより圧入バー１が後退
する。In this way, the determination result regarding the bush pressure input is obtained.
Thereafter, the press-fit bar 1 is moved back by inputting a retreat command.
発明の効果
以上のように本発明によれば、圧入バーを駆動する速度
制御サーボモー４の負荷ｉ！流を監視し、この負荷１１
ｆｉｅもとにしてブツシュ圧入力の正否の判定を行なう
方法としたことにより、圧入速度が安定し、信頼性の高
い判定結果が得られるほか、ブツシュが圧入限位置に達
するまでは圧入バーが停止しないこととも相俟ってサイ
クルタイムを短縮化できる。Effects of the Invention As described above, according to the present invention, the load i! monitor the current and this load 11
By using this method to judge whether the bushing press input is correct or not based on the fie, the press-fitting speed is stabilized and highly reliable judgment results can be obtained, and the press-fitting bar stops until the bushing reaches the press-fitting limit position. Coupled with the fact that it is not used, cycle time can be shortened.
第１図は本発明方法を用いたブツシュ圧入装置の一例を
示す説明図、第２図は上記装置の作動状態を説明するた
めのタイミングチャートである。
Ｂ・・・ブツシュ、Ｗ・・・被組付部品、１・・・圧入
、＜−１３・・・サーボモータ。
外２名FIG. 1 is an explanatory diagram showing an example of a bushing press-fitting device using the method of the present invention, and FIG. 2 is a timing chart for explaining the operating state of the device. B... Bush, W... Part to be assembled, 1... Press fit, <-13... Servo motor. 2 people outside
Claims (1)
の圧入動作に基づいて所定の部品にブッシュを圧入する
方法であって、前記速度制御サーボモータの負荷電流を
監視し、この負荷電流をもとにブッシュの圧入力の判定
を行なうことを特徴とするブッシュの圧入方法。(1) A method of press-fitting a bushing into a predetermined part based on the press-fitting operation of a press-fitting bar driven by a speed control servo motor, in which the load current of the speed control servo motor is monitored, and the load current is based on the load current. A method for press-fitting a bush, characterized by determining the press-in force of the bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16760084A JPS6146330A (en) | 1984-08-10 | 1984-08-10 | Press fit method of bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16760084A JPS6146330A (en) | 1984-08-10 | 1984-08-10 | Press fit method of bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6146330A true JPS6146330A (en) | 1986-03-06 |
Family
ID=15852774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16760084A Pending JPS6146330A (en) | 1984-08-10 | 1984-08-10 | Press fit method of bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6146330A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62297000A (en) * | 1986-04-04 | 1987-12-24 | Janome Denki Kk | Electrically driven press |
| JPS62296999A (en) * | 1986-04-04 | 1987-12-24 | Janome Denki Kk | Electrically driven press |
| CN102275073A (en) * | 2010-06-08 | 2011-12-14 | 株式会社神户制钢所 | Bushing press-fitting inspection device, method, and program, and bushing press-fitting apparatus |
| JP2017189932A (en) * | 2016-04-14 | 2017-10-19 | ファナック株式会社 | Injection molding system performing assembly work in metal mold |
| CN107470880A (en) * | 2017-09-29 | 2017-12-15 | 开平市佳思雅卫浴有限公司 | A kind of water pipe assembling device |
-
1984
- 1984-08-10 JP JP16760084A patent/JPS6146330A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62297000A (en) * | 1986-04-04 | 1987-12-24 | Janome Denki Kk | Electrically driven press |
| JPS62296999A (en) * | 1986-04-04 | 1987-12-24 | Janome Denki Kk | Electrically driven press |
| JP2506657B2 (en) * | 1986-04-04 | 1996-06-12 | 蛇の目ミシン工業株式会社 | Electric press |
| JP2533486B2 (en) * | 1986-04-04 | 1996-09-11 | 蛇の目ミシン工業株式会社 | Electric press |
| CN102275073A (en) * | 2010-06-08 | 2011-12-14 | 株式会社神户制钢所 | Bushing press-fitting inspection device, method, and program, and bushing press-fitting apparatus |
| US8620598B2 (en) | 2010-06-08 | 2013-12-31 | Kobe Steel, Ltd. | Bushing press-fitting inspection device, method, and program, and bushing press-fitting apparatus |
| JP2017189932A (en) * | 2016-04-14 | 2017-10-19 | ファナック株式会社 | Injection molding system performing assembly work in metal mold |
| US10369734B2 (en) | 2016-04-14 | 2019-08-06 | Fanuc Corporation | Injection molding system for performing assembly operation in mold |
| CN107470880A (en) * | 2017-09-29 | 2017-12-15 | 开平市佳思雅卫浴有限公司 | A kind of water pipe assembling device |
| CN107470880B (en) * | 2017-09-29 | 2023-08-11 | 安徽屹盛机电科技有限公司 | Water pipe assembly quality |
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