JP2009039813A - Press-fitting device - Google Patents

Press-fitting device Download PDF

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JP2009039813A
JP2009039813A JP2007206926A JP2007206926A JP2009039813A JP 2009039813 A JP2009039813 A JP 2009039813A JP 2007206926 A JP2007206926 A JP 2007206926A JP 2007206926 A JP2007206926 A JP 2007206926A JP 2009039813 A JP2009039813 A JP 2009039813A
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press
fitting
workpiece
linear motion
movable ram
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Takahiro Toda
貴弘 戸田
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Sintokogio Ltd
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Sintokogio Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a press-fitting device reducing installation costs because it is not necessary to newly provide a pull-out force inspection device by providing a function to inspect the pull-out force of a press-fitting component. <P>SOLUTION: This press-fitting device includes: a fixed surface plate 2 having clamp means E; a frame body 3 provided on the fixed surface plate 2; linear motion means A coupled to the frame body 3; position detection means B detecting the position of the movable ram 14 of the linear motion means A; a load cell 4 which is coupled to the end of the movable ram 14 of the linear motion means A and which measures a press-fitting load advancing the movable ram 14 to press-fit a first workpiece W1 to a second workpiece W2 and a tensile load retreating the movable ram 14 after press-fitting and used for inspecting the pull-out force; a tension mechanism C which is coupled to the load cell 4 toward the first workpiece W1 and second workpiece W2 and which is engaged with the first workpiece W1 when inspecting the pull-out force after press-fitting; and control means D controlling the movement of the linear motion means A and tension mechanism C. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は圧入装置に関する。さらに詳しくは、部品の圧入工程に引き続き圧入部品の抜け力検査を行うことができる圧入装置に関する。   The present invention relates to a press-fitting device. More specifically, the present invention relates to a press-fitting device that can perform a force-in-force inspection of a press-fitted component following the component press-fitting process.

従来より、ワーク(部品)を他のワーク(部品)に圧入する圧入装置が種々提案されている(たとえば特許文献1)。この圧入装置における圧入工程において、圧入後の圧入部品(組立部品)の品質の重要な条件として、部品に力が働いても抜けないことが挙げられる。従来は、試作段階において、圧入に必要な力(圧入力)と部品が抜けてしまう力(抜け力)との相関関係を示しておき、生産段階では相関関係にて示された圧入力にて圧入されれば良品と判断していた。   Conventionally, various press-fitting devices for press-fitting a work (part) into another work (part) have been proposed (for example, Patent Document 1). In the press-fitting process in this press-fitting device, an important condition for the quality of the press-fitted parts (assembled parts) after press-fitting is that even if force is applied to the parts, it cannot be removed. Conventionally, in the prototype stage, the correlation between the force required for press-fitting (press input) and the force that causes parts to escape (removal force) has been shown, and in the production stage, the pressure input indicated by the correlation is used. If it was press-fitted, it was judged as a good product.

特開2005−7436号公報JP 2005-7436 A

しかしながら、従来の方法では、実際に抜け力を判断しているわけではないので、たとえば試作段階での相関関係の調査が不充分で、正確性にかける場合には、不良品を間違って良品であると判断するおそれがある。
また、前記試作段階において相関関係を求める際にも、実際に抜け力検査を行うための装置が別途必要になるため、その装置を新設するのにコストがかかるという問題がある。
However, since the conventional method does not actually determine the removal force, for example, it is insufficient to investigate the correlation at the prototype stage. There is a risk that it may be determined.
Further, when obtaining the correlation in the trial production stage, a separate device for actually performing the pulling force inspection is required, and there is a problem that it is expensive to newly install the device.

そこで、本発明は、叙上の事情に鑑み、圧入部品の抜け力検査機能を備えることにより、新たに抜け力検査装置を新設する必要がなくなり、設備費用を削減することができる圧入装置を提供することを目的とする。   Accordingly, in view of the above circumstances, the present invention provides a press-fitting device that can reduce the equipment cost by eliminating the need to newly install a pull-out force inspection device by providing a press-fitting component removal force inspection function. The purpose is to do.

本発明の圧入装置は、第1ワークを第2ワークに圧入する圧入装置であって、クランプ手段を有する固定定盤と、該固定定盤に設けられるフレーム体と、該フレーム体に連結される直動手段と、該直動手段の可動ラムの位置を検出する位置検出手段と、該直動手段の可動ラムの先端に連結されるとともに該可動ラムを前進させて前記第1ワークを第2ワークに圧入する圧入荷重と圧入後に該可動ラムを後退させて抜け力検査のための引張荷重とを計測できるロードセルと、前記第1ワークと第2ワーク側に向けて該ロードセルに連結されるとともに前記圧入後の抜き力検査時に第1ワークに係合する引張機構と、前記直動手段および引張機構の動作を制御する制御手段とを備えてなることを特徴としている。   The press-fitting device of the present invention is a press-fitting device for press-fitting a first work into a second work, and is a fixed surface plate having a clamping means, a frame body provided on the fixed surface plate, and connected to the frame body. A linear motion means; a position detection means for detecting the position of the movable ram of the linear motion means; and a second ram that is connected to the distal end of the movable ram of the linear motion means and advances the movable ram to the second work A load cell capable of measuring a press-fit load to be press-fitted into the workpiece and a tensile load for pull-out force inspection by retracting the movable ram after press-fitting, and being connected to the load cell toward the first workpiece and the second workpiece side It is characterized by comprising a pulling mechanism that engages with the first workpiece during the pulling force inspection after the press-fitting, and a control unit that controls the operation of the linear motion unit and the pulling mechanism.

本発明によれば、第1ワークを第2ワークに圧入した圧入部品の抜け力検査を圧入工程に引き続き引張機構により行うことができるため、新たに抜け力検査装置を新設する必要がなくなり、設備費用を削減することができる。
また、圧入力から抜け力を推定して品質を保証している事例、たとえばシャフトへの軸受圧入工程や、トランスミッション(変速機)のギア圧入工程においても、全数の抜け力検査が可能になるため、確実に良品を次工程に渡すことができる。
According to the present invention, since the pulling force inspection of the press-fitted parts in which the first work is press-fitted into the second work can be performed by the tension mechanism following the press-fitting process, it is not necessary to newly install a pull-out force inspection device. Cost can be reduced.
In addition, it is possible to inspect all the removal force even in cases where the release force is estimated from the pressure input and the quality is guaranteed, for example, in the bearing press-fitting process to the shaft and the gear press-fitting process of the transmission (transmission). The non-defective product can be passed to the next process without fail.

本発明の圧入装置は、第1ワークを第2ワークに圧入する圧入装置であって、エアまたは油を駆動源とするシリンダを使用した圧入装置または駆動源としてサーボモータを使用し、該サーボモータの回転をボールねじの直線運動にする直動方式の圧入装置などに適用することができる。第1ワークとしては筒状部品の軸受、金属リングなどであり、第2ワークとしては該軸受と組み付けるシャフト、該金属リングと組付ける筒状碍子などである。
以下、添付図面に基づいて本発明の圧入装置について説明する。図1に示されるように、本発明の一実施の形態にかかわる圧入装置は、基台1に載置される固定定盤(テーブル)2と、該固定定盤1に立設されるフレーム体3と、該フレーム体3の天井フレーム3aに連結される直動手段Aと、該直動手段Aの可動ラム14の位置を検出する位置検出手段Bと、該直動手段Aの可動ラム14の先端に連結されるロードセル4と、第1ワークW1と第2ワークW2側に向けて該ロードセル4に連結される引張機構Cと、制御手段Dとから構成されている。なお、実施の形態にかかわる圧入装置は、竪型配置にされているが、横型配置にすることができる。すなわち圧入装置は、第1ワークW1を第2ワークW2に圧入させる方向が垂直方向になるように構成されているが、水平方向になるように構成することができる。
The press-fitting device according to the present invention is a press-fitting device for press-fitting a first work into a second work, and uses a servo motor as a press-fitting device or a drive source using a cylinder using air or oil as a drive source. It can be applied to a direct-motion type press-fitting device that makes the rotation of the ball screw linearly move. The first work is a bearing of a cylindrical part, a metal ring, etc., and the second work is a shaft assembled with the bearing, a cylindrical insulator assembled with the metal ring, and the like.
Hereinafter, the press-fitting device of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, a press-fitting device according to an embodiment of the present invention includes a fixed surface plate (table) 2 placed on a base 1 and a frame body standing on the fixed surface plate 1. 3, linear motion means A connected to the ceiling frame 3 a of the frame body 3, position detection means B for detecting the position of the movable ram 14 of the linear motion means A, and movable ram 14 of the linear motion means A The load cell 4 is connected to the front end, the tension mechanism C is connected to the load cell 4 toward the first work W1 and the second work W2, and the control means D. The press-fitting device according to the embodiment has a saddle type arrangement, but can be a horizontal type arrangement. That is, the press-fitting device is configured so that the direction in which the first workpiece W1 is press-fitted into the second workpiece W2 is the vertical direction, but can be configured to be the horizontal direction.

前記第1ワークW1は、位置決め用金型治具5に保持されるか、その他適宜の方法により、位置決めして第2ワークW2に圧入される。また、この第2ワークW2は、前記固定定盤2に設けられるクランプ手段E、たとえばチャックや爪などを用いた固定治具により固定される。   The first workpiece W1 is held by the positioning mold jig 5, or is positioned and press-fitted into the second workpiece W2 by any other appropriate method. The second workpiece W2 is fixed by a clamping means E provided on the fixed surface plate 2, for example, a fixing jig using a chuck or a claw.

前記直動手段Aは、本実施の形態では、前記位置検出手段Bとしてのエンコーダ11を付属させたサーボモータ12と電動シリンダ13とから構成されている。また、この電動シリンダ13は、サーボモータ12の回転をボールねじ(図示せず)の直線運動に変換する連結機構を備えており、可動ラム14を昇降させる構成にされている。なお、該可動ラム14の位置は前記エンコーダ11で検出するようにされているが、本発明では、該エンコーダ11に代えて第1ワークW1の近傍に設けられるリニアゲージ(図示せず)を用いて、可動ラム14の位置を検出することもできる。   In the present embodiment, the linear motion means A is composed of a servo motor 12 and an electric cylinder 13 to which an encoder 11 as the position detection means B is attached. The electric cylinder 13 includes a connecting mechanism that converts the rotation of the servo motor 12 into a linear motion of a ball screw (not shown), and is configured to move the movable ram 14 up and down. Although the position of the movable ram 14 is detected by the encoder 11, in the present invention, a linear gauge (not shown) provided in the vicinity of the first workpiece W1 is used instead of the encoder 11. Thus, the position of the movable ram 14 can also be detected.

前記ロードセル4は、該可動ラム14を前進させて前記第1ワークW1を第2ワークW2に圧入する圧入荷重と圧入後に該可動ラム14を後退させて抜け力検査のための引張荷重とを計測できる引張圧縮共用の構成であれば、本発明においては、とくに限定されるものではないが、たとえば引張圧縮両用型ロードセル(LUK−A−SA1シリーズ)(商品名:共和電業製)を用いることができる。   The load cell 4 measures the press-fit load for pressing the first work W1 into the second work W2 by moving the movable ram 14 forward and the tensile load for removing the force after the press-fit. In the present invention, there is no particular limitation as long as the configuration can be used for both tension and compression. For example, a tension / compression load cell (LUK-A-SA1 series) (trade name: manufactured by Kyowa Denki) is used. Can do.

前記引張機構Cは、前記圧入後の抜き力検査時に第1ワークW1に係合することができる機構であって、本実施の形態では、回動軸21により軸支される一対の爪22をモータ(図示せず)により逆方向に回動(開閉)させる機構にされている。なお、本発明において、引張機構Cはモータによる開閉機構に限定されるものではなく、一対の爪をねじ軸により逆方向に移動させる機構などを適宜選定して用いることができる。   The pulling mechanism C is a mechanism that can be engaged with the first work W1 during the pulling force inspection after the press-fitting. In the present embodiment, the pulling mechanism C includes a pair of claws 22 that are pivotally supported by the rotating shaft 21. It is a mechanism that rotates (opens and closes) in the reverse direction by a motor (not shown). In the present invention, the tension mechanism C is not limited to an opening / closing mechanism by a motor, and a mechanism for moving a pair of claws in the opposite direction by a screw shaft can be appropriately selected and used.

前記制御手段Dは、直動手段Aおよび引張機構Cの動作を制御することができれば、本発明においては、とくに限定されるものではないが、本実施の形態では、ドライバにパルスや電圧を出力する指令部と、エンコーダの位置情報をドライバを介して(時にはリニアゲージの位置情報を直接)入力できる位置フィードバック部と、ロードセルの荷重情報をA/D変換器を介して入力できる荷重フィードバック部を有し、圧入および引張工程の動作パターンを記憶する記憶媒体と、位置フィードバック部および荷重フィードバック部からフィードバックされた位置および荷重情報を動作パターン内の数値と比較、演算するCPU(演算回路)などを具備するコントローラ31にされている。このコントローラ31は、ドライバ32を介して前記サーボモータ12およびエンコーダ11に電気的に接続させているとともに、A/D変換器33を介して前記ロードセル4に電気的に接続されている。
また、このコントローラ31には、タッチパネル、ランプおよびボタンなどを具備する操作部41および表示部42が接続されており、本実施の形態では、工程の起動、停止、パラメータの変更、表示および動作状況の表示ができるようにされている。
The control means D is not particularly limited in the present invention as long as it can control the operations of the linear motion means A and the tension mechanism C. In this embodiment, the control means D outputs a pulse or a voltage to the driver. A command feedback section, a position feedback section that can input encoder position information via a driver (sometimes directly with linear gauge position information), and a load feedback section that can input load cell load information via an A / D converter. A storage medium for storing the operation pattern of the press-fitting and tensioning process, and a CPU (arithmetic circuit) for comparing and calculating the position and load information fed back from the position feedback unit and the load feedback unit with numerical values in the operation pattern The controller 31 is provided. The controller 31 is electrically connected to the servo motor 12 and the encoder 11 via a driver 32, and is electrically connected to the load cell 4 via an A / D converter 33.
In addition, the controller 31 is connected with an operation unit 41 and a display unit 42 that include a touch panel, lamps, buttons, and the like. In this embodiment, the start and stop of the process, the parameter change, the display, and the operation status Can be displayed.

本実施の形態では、可動ラム14はサーボモータ12を回転させることにより上下動される。この可動ラム14の位置はサーボモータ12に取り付けられたエンコーダ11により測定する。このサーボモータ12は、エンコーダ11により測定された位置情報をドライバ32にフィードバックし、位置制御を行う。可動ラム14の目標動作はコントローラ31によりドライバ32に入力される。圧入力および引張力(抜き力)はロードセル4によって検出され、アナログ信号をデジタル信号に変換してコントローラ31に入力される。このコントローラ31は、この圧入荷重および引張荷重の信号をフィードバックしてサーボモータ12を制御する。引張機構Cもコントローラ31から制御されて、圧入作業時は爪22を開放し、引張時には爪22を閉じることで圧入した第1ワークW1をつかむことができる。   In the present embodiment, the movable ram 14 is moved up and down by rotating the servo motor 12. The position of the movable ram 14 is measured by the encoder 11 attached to the servo motor 12. The servo motor 12 feeds back the position information measured by the encoder 11 to the driver 32 and performs position control. The target operation of the movable ram 14 is input to the driver 32 by the controller 31. The pressure input and the pulling force (pulling force) are detected by the load cell 4, converted from an analog signal to a digital signal, and input to the controller 31. The controller 31 controls the servo motor 12 by feeding back the signals of the press-fit load and the tensile load. The tension mechanism C is also controlled by the controller 31 so that the first work W1 that has been press-fitted can be grasped by opening the claw 22 during press-fitting and closing the claw 22 during tension.

また、圧入作業時は、引張機構Cの爪22を開放したまま第1ワークW1を第2ワークW2に加圧し、圧入する。エンコーダ11から得られた可動ラム14の位置が目標位置に到達しているか、またはロードセル4から取得した荷重が目標荷重に到達しているか、圧入荷重曲線が変曲点を検出したかなど、指定の圧入終了条件を満たしたときに圧入完了とする。
ついで、圧入完了後、一定時間その位置、または荷重を保持した後、抜け力検査の引張工程に移行する。引張機構Cの爪22を閉じ、可動ラム14を上昇させる。ついで、設定した引張力を検知したら、引張工程開始位置まで戻り、引張機構Cの爪22を開け、可動ラム14は作業原点へ上昇する。
Further, at the time of press-fitting work, the first work W1 is pressurized and press-fitted to the second work W2 while the claw 22 of the tension mechanism C is opened. Specify whether the position of the movable ram 14 obtained from the encoder 11 has reached the target position, whether the load acquired from the load cell 4 has reached the target load, or whether the indentation load curve has detected an inflection point The press-fit is completed when the press-fit end condition is satisfied.
Next, after completion of press-fitting, the position or load is held for a certain period of time, and then the process proceeds to a pulling process for removing force inspection. The claw 22 of the tension mechanism C is closed and the movable ram 14 is raised. Next, when the set tensile force is detected, it returns to the starting position of the tensioning process, opens the pawl 22 of the tensioning mechanism C, and the movable ram 14 rises to the work origin.

以上説明したとおり、本実施の形態では、引張圧縮共用ロードセルと引張機構を設置することにより、第1ワークを第2ワークに圧入する圧入工程のち、引き続き第1ワークと第2ワークの圧入部品の抜け力検査ができるため、新たに抜け力検査装置を新設する必要がなくなり、圧入装置の設備費用を削減することができる。   As described above, in the present embodiment, by installing the tension / compression shared load cell and the tension mechanism, after the press-fitting process of press-fitting the first work into the second work, the press-fitting parts of the first work and the second work are subsequently continued. Since the removal force inspection can be performed, it is not necessary to newly install a removal force inspection device, and the equipment cost of the press-fitting device can be reduced.

本発明の一実施の形態にかかわる圧入装置の概略構成を示す図である。1 is a diagram illustrating a schematic configuration of a press-fitting device according to an embodiment of the present invention.

符号の説明Explanation of symbols

A 直動手段
B 位置検出手段
C 引張機構
D 制御手段
E クランプ手段
W1 第1ワーク
W2 第2ワーク
1 基台
2 固定定盤
3 フレーム体
3a 天井フレーム
4 ロードセル
11 エンコーダ
12 サーボモータ
13 電動シリンダ
14 可動ラム
21 回動軸
22 爪
31 コントローラ
32 ドライバ
33 A/D変換器
41 操作部
42 表示部
A linear motion means B position detection means C tension mechanism D control means E clamping means W1 first work W2 second work 1 base 2 fixed surface plate 3 frame body 3a ceiling frame 4 load cell 11 encoder 12 servo motor 13 electric cylinder 14 movable Ram 21 Rotating shaft 22 Claw 31 Controller 32 Driver 33 A / D converter 41 Operation unit 42 Display unit

Claims (1)

第1ワークを第2ワークに圧入する圧入装置であって、
クランプ手段を有する固定定盤と、
該固定定盤に設けられるフレーム体と、
該フレーム体に連結される直動手段と、
該直動手段の可動ラムの位置を検出する位置検出手段と、
該直動手段の可動ラムの先端に連結されるとともに該可動ラムを前進させて前記第1ワークを第2ワークに圧入する圧入荷重と圧入後に該可動ラムを後退させて抜け力検査のための引張荷重とを計測できるロードセルと、
前記第1ワークと第2ワーク側に向けて該ロードセルに連結されるとともに前記圧入後の抜き力検査時に第1ワークに係合する引張機構と、
前記直動手段および引張機構の動作を制御する制御手段
とを備えてなる圧入装置。
A press-fitting device for press-fitting a first work into a second work,
A fixed surface plate having clamping means;
A frame body provided on the fixed surface plate;
Linear motion means coupled to the frame body;
Position detecting means for detecting the position of the movable ram of the linear motion means;
Connected to the tip of the movable ram of the linear motion means and advances the movable ram to press-fit the first work into the second work, and retracts the movable ram after the press-fitting to inspect the pulling force. A load cell capable of measuring tensile load,
A tension mechanism that is connected to the load cell toward the first workpiece and the second workpiece and that engages with the first workpiece at the time of the pulling force inspection after the press-fitting,
A press-fitting device comprising a linear motion means and a control means for controlling the operation of the tension mechanism.
JP2007206926A 2007-08-08 2007-08-08 Press-fitting device Pending JP2009039813A (en)

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Cited By (3)

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KR101241657B1 (en) 2010-12-14 2013-03-11 탑테크주식회사 Parts assembly device
CN113601143A (en) * 2021-09-06 2021-11-05 江西龙恩自动化设备有限公司 Embedded pressure equipment machine of assembly line
JP2022501723A (en) * 2018-09-21 2022-01-06 キストラー ホールディング アクチエンゲゼルシャフト A method for analyzing the condition of an electromechanical joining system and an electromechanical joining system for carrying out the method.

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JPH1148049A (en) * 1996-12-16 1999-02-23 Ricoh Co Ltd Seal lip turnup judging method and seal inserting device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101241657B1 (en) 2010-12-14 2013-03-11 탑테크주식회사 Parts assembly device
JP2022501723A (en) * 2018-09-21 2022-01-06 キストラー ホールディング アクチエンゲゼルシャフト A method for analyzing the condition of an electromechanical joining system and an electromechanical joining system for carrying out the method.
US11454948B2 (en) 2018-09-21 2022-09-27 Kistler Holding Ag Method for analyzing the status of an electromechanical joining system and electromechanical joining system for carrying out the method
JP7299310B2 (en) 2018-09-21 2023-06-27 キストラー ホールディング アクチエンゲゼルシャフト Method for analyzing the state of an electromechanical joint system and electromechanical joint system for carrying out the method
CN113601143A (en) * 2021-09-06 2021-11-05 江西龙恩自动化设备有限公司 Embedded pressure equipment machine of assembly line

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