JP2014087907A - Press-in device - Google Patents

Press-in device Download PDF

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JP2014087907A
JP2014087907A JP2012240390A JP2012240390A JP2014087907A JP 2014087907 A JP2014087907 A JP 2014087907A JP 2012240390 A JP2012240390 A JP 2012240390A JP 2012240390 A JP2012240390 A JP 2012240390A JP 2014087907 A JP2014087907 A JP 2014087907A
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press
fit
shaft
fitting
hole
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Shinji Matsumura
真次 松村
Yusuke Makuta
祐介 幕田
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a press-in device which presses in a member to be pressed in into a cylinder head accurately.SOLUTION: A press-in device 1 comprises: plural sets of one press-in shaft 10 for holding a member to be pressed in 4; and the other press-in shaft 20 for applying a pressing force to the one press-in shaft 10. And the press-in device 1 comprises: a first fulcrum 5 for supporting each one press-in shaft 10 so that it can slide along central lines of suction side press-in holes 3a, 3b and exhaust side press-in holes 3c, 3d; a second fulcrum 6 for supporting each the other press-in shaft 20 so that it can slide along central lines of the suction side press-in holes 3a, 3b and exhaust side press-in holes 3c, 3d; and plural press-in machines 7 for contacting to each the other press-in shaft 20 and applying a pressing force to each one press-in shaft 10 side.By each press-in machine 7, the applied pressing force to the other press-in shaft 20 is transmitted to the member to be pressed in 4 via the one press-in shaft 10.

Description

本発明は、エンジンのシリンダヘッドにバルブガイドやバルブシート等の被圧入部品を圧入する圧入装置に関する。   The present invention relates to a press-fitting device for press-fitting a press-fitting component such as a valve guide or a valve seat into a cylinder head of an engine.

エンジンのシリンダヘッドには、吸・排気弁の摺動をガイドするためのバルブガイドや吸・排気弁と密着して燃焼室の機密を保つためのバブルシート等の被圧入部材が圧入されている。
被圧入部材を圧入する圧入装置として、例えば、特許文献１には、被圧入部材を先端部で保持した状態で摺動可能な圧入軸を有し、シリンダヘッド内の吸気側の圧入孔及び排気側の圧入孔に当該被圧入部材をそれぞれ圧入する一対の圧入機と、シリンダヘッドを支持するともともに、当該シリンダヘッドの傾斜角度を調整可能な支持台と、当該支持台を各圧入機の下方へ移動させる移動手段と、を備えたものが開示されている。
この圧入装置を用いた圧入方法は、まず、吸気側の圧入孔の中心線が一方の圧入機に設けられた圧入軸の中心線の延長線と一致するように、シリンダヘッドを支持台により傾斜させて、一方の圧入機により被圧入部材を吸気側の圧入孔内に圧入し、次に、シリンダヘッドを支持した状態で支持台を移動手段により他方の圧入機の下方へ移動させて、排気側の圧入孔の中心線が他方の圧入機に設けられた圧入軸の中心線の延長線と一致するように、シリンダヘッドを支持台により傾斜させた後、他方の圧入機により被圧入部材を排気側の圧入孔内に圧入する。 The cylinder head of the engine is press-fitted with a pressure guide member such as a valve sheet for guiding sliding of the intake / exhaust valves and a bubble sheet for keeping the combustion chamber in close contact with the intake / exhaust valves. .
As a press-fitting device for press-fitting a press-fitted member, for example, Patent Document 1 has a press-fitting shaft that is slidable in a state where the press-fitted member is held at a tip portion, and a press-fitting hole on an intake side in the cylinder head and exhaust A pair of press-fitting machines for press-fitting the press-fitted members into the side press-fitting holes, a support base that can support the cylinder head and adjust the tilt angle of the cylinder head, and the support base at the bottom of each press-fitting machine And a moving means for moving to.
In the press-fitting method using this press-fitting device, first, the cylinder head is tilted by a support base so that the center line of the press-fitting hole on the intake side coincides with the extension line of the center line of the press-fitting shaft provided in one press machine. Then, the press-fitting member is press-fitted into the intake-side press-fitting hole by one press-fitting machine, and then the support base is moved below the other press-fitting machine by the moving means while the cylinder head is supported. The cylinder head is tilted by the support base so that the center line of the press-fitting hole on the side coincides with the extension line of the center line of the press-fitting shaft provided in the other press-fitting machine, and then the press-fitting member is moved by the other press-fitting machine. Press-fit into the press-fitting hole on the exhaust side.

特開２０００−１２６９４３号公報JP 2000-126943 A

しかしながら、特許文献１に記載の圧入装置を用いて被圧入部材を圧入する方法では、被圧入部材の圧入時に生じる反力によって、圧入軸を支持する支持台が撓んでしまい、圧入軸の中心線が被圧入部材の圧入孔の中心線の延長線上からずれてしまう（以下、芯ズレという）場合がある。圧入孔の中心線と圧入軸の中心線の延長線とが芯ズレしていると、被圧入部材が圧入孔内の所定の深さ位置まで圧入されなかったり、被圧入部材が圧入される際に圧入孔の内周面を傷付けたりするおそれがあった。   However, in the method of press-fitting the press-fit member using the press-fitting device described in Patent Document 1, the support base that supports the press-fit shaft is bent by the reaction force generated when the press-fit member is press-fitted, and the center line of the press-fit shaft May deviate from the extended line of the center line of the press-fitting hole of the press-fitted member (hereinafter referred to as “core misalignment”). If the center line of the press-fitting hole and the extension line of the center line of the press-fitting shaft are misaligned, the press-fitted member is not press-fitted to a predetermined depth in the press-fitting hole, or the press-fitted member is press-fitted In some cases, the inner peripheral surface of the press-fit hole may be damaged.

そこで、本発明は、シリンダヘッド内に被圧入部材を精度良く圧入可能な圧入装置を提供することを目的とする。   Therefore, an object of the present invention is to provide a press-fitting device that can press-fit a press-fit member into a cylinder head with high accuracy.

上述した課題を解決する本発明に係る圧入装置は、エンジンのシリンダヘッドに形成された圧入孔内に被圧入部材を圧入する圧入装置であって、
前記被圧入部材を前記圧入孔の中心線方向に圧入する圧入軸が、当該中心線方向に２分割されており、
前記分割された前記圧入軸のうち、一方の圧入軸の一端部を前記被圧入部材に当接させるとともに、前記一方の圧入軸を前記圧入孔の中心線に沿って摺動可能に支持する第１支持台と、
前記分割された前記圧入軸のうち、他方の圧入軸の一端部を前記一方の圧入軸の他端部に当接させるとともに、前記他方の圧入軸を前記圧入孔の中心線に沿って摺動可能に支持する第２支持台と、
前記一方の圧入軸側へ向かって前記他方の圧入軸に押圧力を付与する圧入機と、を備え、
前記圧入機によって前記他方の圧力軸に付与された押圧力を前記一方の圧力軸を介して前記被圧入部材に伝達することを特徴とする。 A press-fitting device according to the present invention that solves the above-described problem is a press-fitting device that press-fits a press-fitted member into a press-fitting hole formed in a cylinder head of an engine,
A press-fit shaft for press-fitting the press-fitted member in the center line direction of the press-fit hole is divided into two in the center line direction,
Of the divided press-fit shafts, one end of one press-fit shaft is brought into contact with the press-fit member, and the one press-fit shaft is slidably supported along the center line of the press-fit hole. 1 support base,
Of the divided press-fit shafts, one end of the other press-fit shaft is brought into contact with the other end of the one press-fit shaft, and the other press-fit shaft is slid along the center line of the press-fit hole. A second support base that supports it;
A press-fitting machine that applies a pressing force to the other press-fitting shaft toward the one press-fitting shaft,
The pressing force applied to the other pressure shaft by the press-fitting machine is transmitted to the press-fitted member through the one pressure shaft.

本発明の圧入装置によれば、圧入軸が２つに分割されているため、一方の圧入軸は、圧入時に生じた反力を他方の圧入軸に伝達することで、当該一方の圧入軸を支持する第１支持台に撓みが生じることを抑制して、一方の圧入軸の中心線が圧入孔の中心線の延長線上からずれることを防止できる。即ち、一方の圧入軸の芯ズレを防止できるため、被圧入部材を圧入孔内に精度良く圧入することができる。これにより、被圧入部材を圧入孔の奥まで確実に圧入できるとともに、圧入孔の内周面に傷を付けることを防止できる。   According to the press-fitting device of the present invention, since the press-fitting shaft is divided into two, one press-fitting shaft transmits the reaction force generated at the time of press-fitting to the other press-fitting shaft. It is possible to prevent the center line of one press-fit shaft from deviating from the extension line of the center line of the press-fit hole by suppressing the bending of the first support base to be supported. That is, since the misalignment of one press-fit shaft can be prevented, the press-fit member can be press-fitted into the press-fit hole with high accuracy. Thereby, while being able to press-fit the press-fit member to the depth of the press-fit hole reliably, it is possible to prevent the inner peripheral surface of the press-fit hole from being damaged.

また、他方の圧入軸の一端部は、前記一方の圧入軸の他端部に、当該一方の圧入軸と当接する当接点を中心として回動可能に当接されていてもよい。   One end of the other press-fit shaft may be in contact with the other end of the one press-fit shaft so as to be rotatable about a contact point that comes into contact with the one press-fit shaft.

被圧入部材を圧入する際の反力によって、第２支持台に撓みが生じて他方の圧入軸に芯ズレが発生するおそれがある。しかし、本発明の他方の圧入軸の一端部は、一方の圧入軸の他端部に、当該一方の圧入軸と当接する当接点を中心として回動可能に当接されるため、芯ズレが生じることを容易に且つ確実に回避することができる。   Due to the reaction force when the press-fitted member is press-fitted, there is a possibility that the second support base bends and a misalignment occurs on the other press-fitting shaft. However, one end portion of the other press-fit shaft of the present invention is brought into contact with the other end portion of the one press-fit shaft so as to be rotatable around a contact point that comes into contact with the one press-fit shaft. It can be easily and reliably avoided.

また、前記圧入孔は、鉛直線に対して予め設定された所定角度で傾斜しており、
前記一方の圧力軸及び前記他方の圧力軸の中心線は共に、前記圧入孔の前記中心線の延長線と一致するように設けられていることが好ましい。 The press-fitting hole is inclined at a predetermined angle with respect to the vertical line,
The center lines of the one pressure axis and the other pressure axis are preferably provided so as to coincide with an extension line of the center line of the press-fitting hole.

例えば、特許文献１の圧入装置では、吸気側の被圧入部材を圧入した後に排気側の被圧入部材を圧入するため、シリンダヘッドを傾斜させて位置決めする段取りが必要となるが、この段取りに時間がかかり、作業効率が低下してしまう。
しかし、本発明によれば、一方の圧入軸及び他方の圧入軸の中心線は共に、圧入孔の中心線の延長線と一致するように所定角度で傾斜しているため、特許文献１に記載の圧入装置のように、シリンダヘッドを傾斜させることなく被圧入部材を圧入することができる。これにより、シリンダヘッドを傾斜させて位置決めする時間を省くことができるため、作業効率が更に向上する。 For example, in the press-fitting device of Patent Document 1, in order to press-fit the exhaust-side press-fitted member after press-fitting the intake-side press-fitted member, it is necessary to set up the cylinder head by inclining it. Work efficiency will be reduced.
However, according to the present invention, since the center line of one press-fit shaft and the other press-fit shaft is inclined at a predetermined angle so as to coincide with the extension line of the center line of the press-fit hole, it is described in Patent Document 1. The press-fitting member can be press-fitted without inclining the cylinder head as in the press-fitting device. As a result, it is possible to save time for tilting and positioning the cylinder head, thereby further improving work efficiency.

また、前記一方の圧入軸、前記他方の圧入軸及び前記圧入機は、前記第１支持台及び前記第２支持台にそれぞれ複数設けられていてもよい。   The one press-fit shaft, the other press-fit shaft, and the press-fitting machine may be provided in plural on the first support base and the second support base, respectively.

このように、圧入機及び２本に分割された圧入軸を共に複数備えているため、複数個所の圧入孔に被圧入部材を同時に圧入することができる。複数個所で圧入を同時に行っても、各一方の圧入軸は芯ズレを起こすことがないため、被圧入部材を精度良く圧入することができる。
また、特許文献１の圧入装置では、吸気側の被圧入部材を圧入した後に排気側の被圧入部材を圧入するために、各圧入機の下方へシリンダヘッドを移動させる段取りが必要となるが、この段取りに時間がかかり、作業効率が低下してしまう。しかし、本発明によれば、へシリンダヘッドを移動させる段取り等が不要となるので、作業効率を向上させることができる。 As described above, since a plurality of press-fitting machines and two press-fitting shafts are provided, it is possible to press-fit the press-fitting members simultaneously into the press-fitting holes at a plurality of locations. Even if the press-fitting is performed at a plurality of locations simultaneously, the press-fitting member can be press-fitted with high accuracy because each one of the press-fitting shafts does not cause misalignment.
Moreover, in the press-fitting device of Patent Document 1, in order to press-fit the exhaust-side press-fitted member after press-fitting the intake-side press-fitted member, it is necessary to set up to move the cylinder head below each press-fitting machine. This setup takes time and the work efficiency is reduced. However, according to the present invention, since it is not necessary to prepare for moving the cylinder head, the working efficiency can be improved.

また、前記一方の圧力軸における前記他端部の前記端面は、球面形状を有し、
前記他方の圧力軸における前記一端部の前記端面は、平面形状を有することが好ましい。 In addition, the end surface of the other end of the one pressure axis has a spherical shape,
The end surface of the one end portion of the other pressure shaft preferably has a planar shape.

被圧入部材を圧入する際の反力によって、第２支持台に撓みが生じて他方の圧入軸に芯ズレが発生するおそれがある。他方の圧入軸に芯ズレが発生した状態で一方の圧入軸を押圧すると、一方の圧入軸と他方の圧入軸とがこじれた状態で当接するため両圧力軸を損傷させるおそれがある。しかし、本発明の圧入軸の端面は球面形状を有するため、他方の圧入軸に芯ズレが発生した状態で一方の圧入軸を押圧しても、他方の圧入軸の端面を一方の圧入軸の端面に対して滑らせることができる。これにより、一方の圧入軸と他方の圧入軸とがこじれた状態で当接することを防止できるため、両圧入軸が破損することを防止できる。
また、他方の圧入軸の端面は、平面形状を有するため、一方の圧入軸の球面形状の端面に点で当接することができる。これにより、他方の圧入軸に付与された押圧力を一方の圧入軸に効率良く伝達することができる。 Due to the reaction force when the press-fitted member is press-fitted, there is a possibility that the second support base bends and a misalignment occurs on the other press-fitting shaft. If one of the press-fitted shafts is pressed while the other press-fitted shaft is misaligned, the one press-fitted shaft and the other press-fitted shaft come into contact with each other and the two pressure shafts may be damaged. However, since the end surface of the press-fit shaft of the present invention has a spherical shape, even if one press-fit shaft is pressed in a state where the other press-fit shaft is misaligned, the end surface of the other press-fit shaft is brought into contact with the other press-fit shaft. Can be slid against the end face. As a result, it is possible to prevent the one press-fit shaft and the other press-fit shaft from coming into contact with each other, so that both the press-fit shafts can be prevented from being damaged.
Further, since the end surface of the other press-fit shaft has a planar shape, it can abut on the end surface of the spherical shape of one press-fit shaft at a point. Thereby, the pressing force applied to the other press-fit shaft can be efficiently transmitted to the one press-fit shaft.

また、前記被圧入部材は、バルブガイド及びバルブシートのうち少なくとも何れか一方であることが好ましい。   Further, it is preferable that the pressed-in member is at least one of a valve guide and a valve seat.

これにより、シリンダヘッドの吸気側及び排気側の圧入孔にバルブガイドやバルブシートを圧入することができる。   Thereby, the valve guide and the valve seat can be press-fitted into the press-fitting holes on the intake side and the exhaust side of the cylinder head.

本発明によれば、シリンダヘッド内に被圧入部材を精度良く圧入可能な圧入装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the press injection apparatus which can press-fit a press-fit member in a cylinder head accurately can be provided.

本発明の実施形態に係る圧入装置を示す図である。It is a figure which shows the press injection apparatus which concerns on embodiment of this invention. 本発明の実施形態に係る一方の圧入軸を第１支持台に取り付けた状態を示す拡大断面図である。It is an expanded sectional view showing the state where one press fit axis concerning an embodiment of the present invention was attached to the 1st support stand. 本発明の実施形態に係るシリンダヘッドの一例を示す平面図である。It is a top view showing an example of a cylinder head concerning an embodiment of the present invention. 図３のＡ−Ａ断面図であり、シリンダヘッドの吸気側及び排気側の圧入孔に被圧入部材を圧入している状態を示す図である。FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3 and shows a state in which a press-fit member is press-fitted into press-fitting holes on an intake side and an exhaust side of a cylinder head.

以下、本発明を図に示した実施形態を用いて詳細に説明する。但し、この実施形態に記載されている構成部品の寸法、材質、形状、その相対配置などは特に特定的な記載がない限り、この発明の範囲をそれのみに限定する趣旨ではない。   Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

図１は、本発明の実施形態に係る圧入装置を示す図である。
図１に示すように、圧入装置１は、シリンダヘッド２に形成された複数の圧入孔３内に被圧入部材４を圧入するものである。
圧入装置１の圧入軸は、２つに分割されており、被圧入部材４を保持する一方の圧入軸１０と、当該一方の圧入軸１０に押圧力を付与する他方の圧入軸２０とから構成される。これらの圧入軸１０、２０は複数組、設けられている。
また、圧入装置１は、各一方の圧入軸１０を支持する第１支持台５と、各他方の圧入軸２０を支持する第２支持台６と、各他方の圧入軸２０に当接して、各一方の圧入軸１０側へ向かって押圧力をそれぞれ付与する複数の圧入機７と、を備えている。 FIG. 1 is a view showing a press-fitting device according to an embodiment of the present invention.
As shown in FIG. 1, the press-fitting device 1 press-fits a press-fitting member 4 into a plurality of press-fitting holes 3 formed in the cylinder head 2.
The press-fitting shaft of the press-fitting device 1 is divided into two parts, and is composed of one press-fitting shaft 10 that holds the press-fitted member 4 and the other press-fitting shaft 20 that applies a pressing force to the one press-fitting shaft 10. Is done. A plurality of sets of these press-fit shafts 10 and 20 are provided.
The press-fitting device 1 is in contact with the first support base 5 that supports each one press-fit shaft 10, the second support base 6 that supports each other press-fit shaft 20, and the other press-fit shaft 20, And a plurality of press-fitting machines 7 each applying a pressing force toward the one press-fitting shaft 10 side.

各一方の圧入軸１０は、その中心線が圧入孔３の中心線の延長線と一致し、且つ圧入孔３の中心線に沿って摺動可能に第１支持台５に支持されている。摺動することによって、各一方の圧入軸１０の下端部（一端部に相当）１０ａを圧入孔３内に挿脱することができる。
また、各一方の圧入軸１０の上端部（他端部に相当）１０ｂの端面１０ｃは、球面形状を有している。 Each one of the press-fit shafts 10 is supported by the first support 5 so that its center line coincides with an extension of the center line of the press-fit hole 3 and is slidable along the center line of the press-fit hole 3. By sliding, the lower end portion (corresponding to one end portion) 10 a of each one press-fit shaft 10 can be inserted into and removed from the press-fit hole 3.
Further, the end surface 10c of the upper end portion (corresponding to the other end portion) 10b of each one of the press-fit shafts 10 has a spherical shape.

各他方の圧入軸２０は、その中心線が圧入孔３の中心線の延長線と一致し、且つ、圧入孔３の中心線に沿って摺動可能に第２支持台６に支持されている。また、各他方の圧入軸２０の下端部（一端部に相当）２０ａの端面２０ｂは、平面形状を有している。   Each of the other press-fit shafts 20 is supported by the second support base 6 so that its center line coincides with an extension of the center line of the press-fit hole 3 and is slidable along the center line of the press-fit hole 3. . Moreover, the end surface 20b of the lower end part (equivalent to one end part) 20a of each other press-fit shaft 20 has a planar shape.

圧入機７は、第２支持台６の上面に設置されている。第２支持台６上には、各圧入孔３の中心線と直交するように複数の傾斜面６ａ、６ｂが設けられている。そして、各圧入機７は、当該圧入機７の圧入方向が傾斜面６ａ、６ｂとそれぞれ直交するように設置されている。   The press-fitting machine 7 is installed on the upper surface of the second support base 6. A plurality of inclined surfaces 6 a and 6 b are provided on the second support base 6 so as to be orthogonal to the center line of each press-fitting hole 3. Each press-fitting machine 7 is installed such that the press-fitting direction of the press-fitting machine 7 is orthogonal to the inclined surfaces 6a and 6b.

圧入機７による押圧力によって他方の圧入軸２０が下方へ摺動して、当該圧入軸２０の下端部２０ａの端面２０ｂが、一方の圧入軸１０の上端部１０ｂの端面１０ｃに当接することで他方の圧入軸２０に付与された押圧力を一方の圧入軸１０に伝達する。
更に、他方の圧入軸２０を下方へ摺動させて、一方の圧入軸１０の下端部１０ａに取り付けられた被圧入部材４をシリンダヘッド２の吸気側の圧入孔３ａや排気側の圧入孔３ｃ（詳細は後述する）内に圧入する。
本実施形態では、圧入機７としてシリンダを用いたが、これに限定されるものではなく、伸縮可能なアクチュエータを用いることができる。 The other press-fitting shaft 20 slides downward by the pressing force of the press-fitting machine 7, and the end surface 20 b of the lower end portion 20 a of the press-fit shaft 20 abuts on the end surface 10 c of the upper end portion 10 b of the one press-fit shaft 10. The pressing force applied to the other press-fit shaft 20 is transmitted to one press-fit shaft 10.
Further, the other press-fit shaft 20 is slid downward, and the press-fit member 4 attached to the lower end portion 10a of the one press-fit shaft 10 is inserted into the intake-side press-fit hole 3a or the exhaust-side press-fit hole 3c of the cylinder head 2. Press fit into (details will be described later).
In the present embodiment, a cylinder is used as the press-fitting machine 7, but the present invention is not limited to this, and an extendable actuator can be used.

図２は、本発明の実施形態に係る一方の圧入軸１０を第１支持台５に取り付けた状態を示す拡大断面図である。
図２に示すように、一方の圧入軸１０は、支持体１１により第１支持台５に摺動可能に取り付けられている。
一方の圧入軸１０は、略円柱状に形成されており、下端から上端へ向かうにしたがって直径が変化する。具体的には、中央部１０ｅの直径は、下端部１０ａの直径よりも大きく形成されている。また、中央部１０ｅの上に形成される拡幅部１０ｄの直径は、中央部１０ｅの直径よりも大きく形成されている。そして、上端部１０ｂの直径は、中央部１０ｅの直径と同じ長さに形成されている。
また、一方の圧入軸１０の下端部１０ａの直径は、円筒形状の被圧入部材４（例えば、バルブガイド）の内径よりもやや小さく形成されている。これにより、下端部１０ａの外周に被圧入部材４を装着することができる。本実施形態では、被圧入部材４として円筒形状のバルブガイドを用いたが、これに限定されるものでなく、例えば、リング状のバルブシートを用いてもよい。 FIG. 2 is an enlarged cross-sectional view showing a state in which one press-fitting shaft 10 according to the embodiment of the present invention is attached to the first support base 5.
As shown in FIG. 2, one press-fit shaft 10 is slidably attached to the first support 5 by a support 11.
One press-fit shaft 10 is formed in a substantially cylindrical shape, and the diameter changes from the lower end toward the upper end. Specifically, the diameter of the central part 10e is formed larger than the diameter of the lower end part 10a. Further, the diameter of the widened portion 10d formed on the central portion 10e is formed larger than the diameter of the central portion 10e. And the diameter of the upper end part 10b is formed in the same length as the diameter of the center part 10e.
The diameter of the lower end portion 10a of one press-fitting shaft 10 is formed slightly smaller than the inner diameter of the cylindrical press-fitting member 4 (for example, a valve guide). Thereby, the press-fitting member 4 can be mounted on the outer periphery of the lower end portion 10a. In the present embodiment, a cylindrical valve guide is used as the press-fitted member 4, but the present invention is not limited to this, and for example, a ring-shaped valve seat may be used.

支持体１１は、一方の圧入軸１０が内部を挿通可能で、上端が第１支持台５に接続された円筒部１２と、一方の圧入軸１０の中央部１０ｅを囲うように設けられたスプリング１３と、を備えている。   The support 11 is a spring provided so that one press-fit shaft 10 can be inserted therethrough, and the upper end is connected to the cylindrical portion 12 connected to the first support base 5 and the central portion 10 e of the one press-fit shaft 10. 13.

円筒部１２の上端部はフランジ状に形成されており、ボルト１４にて第１支持台５に固定されている。
スプリング１３は、一方の圧入軸１０の拡幅部１０ｄと円筒部１２内周の下端面１２ａとの間に設けられている。 The upper end portion of the cylindrical portion 12 is formed in a flange shape, and is fixed to the first support base 5 with bolts 14.
The spring 13 is provided between the widened portion 10 d of one press-fit shaft 10 and the lower end surface 12 a of the inner periphery of the cylindrical portion 12.

他方の圧入軸２０から押圧力を付与された一方の圧入軸１０が下方へ摺動すると、スプリング１３は収縮する。その後、他方の圧入軸２０が上方へ摺動して押圧力から解放されると、一方の圧入軸１０はスプリング１３の反力によって上方へ摺動する。   When one press-fit shaft 10 to which a pressing force is applied from the other press-fit shaft 20 slides downward, the spring 13 contracts. Thereafter, when the other press-fit shaft 20 slides upward and is released from the pressing force, the one press-fit shaft 10 slides upward by the reaction force of the spring 13.

図３は、本発明の実施形態に係るシリンダヘッド２の一例を示す平面図である。
図３に示すように、シリンダヘッド２は、４つの気筒３１ａ〜３１ｄを有している。
各気筒３１ａ〜３１ｄの吸気側には、バルブシートを取り付けるためのシート用孔３２ａ、３２ｂがそれぞれ形成されている。また、被圧入部材４を取り付けるための圧入孔３ａ、３ｂがそれぞれ形成されている。
また、各気筒３１ａ〜３１ｄの排気側には、バルブシートを取り付けるためのシート用孔３２ｃ、３２ｄがそれぞれ形成されている。また、被圧入部材４を取り付けるための圧入孔３ｃ、３ｄがそれぞれ形成されている。
したがって、シリンダヘッド２の各気筒３１ａ〜３１ｄには、吸気側及び排気側にそれぞれ被圧入部材４を取り付けるための複数の圧入孔３ａ〜３ｄが形成されている。
吸気側及び排気側の圧入孔３ａ〜３ｄは、それぞれ鉛直線に対して予め設定された所定角度で傾斜している。 FIG. 3 is a plan view showing an example of the cylinder head 2 according to the embodiment of the present invention.
As shown in FIG. 3, the cylinder head 2 has four cylinders 31a to 31d.
Seat holes 32a and 32b for attaching valve seats are formed on the intake side of the cylinders 31a to 31d, respectively. Also, press-fitting holes 3a and 3b for attaching the press-fitted member 4 are formed.
Further, seat holes 32c and 32d for attaching valve seats are formed on the exhaust side of the cylinders 31a to 31d, respectively. Further, press-fitting holes 3c and 3d for attaching the press-fitted member 4 are formed, respectively.
Therefore, a plurality of press-fitting holes 3a to 3d for attaching the press-fitting member 4 to the intake side and the exhaust side are formed in the cylinders 31a to 31d of the cylinder head 2, respectively.
The intake-side and exhaust-side press-fit holes 3a to 3d are inclined at a predetermined angle with respect to the vertical line.

図４は、図３のＡ−Ａ断面図であり、シリンダヘッド２の吸気側及び排気側の圧入孔３ａ、３ｃに被圧入部材４を圧入している状態を示す図である。
図４に示すように、被圧入部材４をそれぞれシリンダヘッド２の吸気側及び排気側の圧入孔３ａ、３ｃに同時に圧入する。吸気側及び排気側の圧入孔３ａ、３ｃにそれぞれ被圧入部材４を同時に圧入するため、作業効率を向上させることができる。
被圧入部材４を圧入する際に、各圧入孔３ａ、３ｃの中心線の延長線と各一方の圧入軸１０の中心線とがそれぞれ一致している。 4 is a cross-sectional view taken along the line AA of FIG. 3 and shows a state in which the press-fitted member 4 is press-fitted into the press-fitting holes 3a and 3c on the intake side and the exhaust side of the cylinder head 2. FIG.
As shown in FIG. 4, the press-fitting member 4 is press-fitted simultaneously into the intake holes 3a and 3c on the intake side and the exhaust side of the cylinder head 2, respectively. Since the press-fitting members 4 are simultaneously press-fitted into the press-fitting holes 3a and 3c on the intake side and the exhaust side, work efficiency can be improved.
When the press-fitting member 4 is press-fitted, the extension line of the center line of each press-fitting hole 3a, 3c and the center line of each one press-fitting shaft 10 are respectively coincident.

また、圧入軸が一方の圧入軸１０と他方の圧入軸２０とに分割されているため、被圧入部材４を圧入する際に生じる反力は、一方の圧入軸１０を介して他方の圧入軸２０に伝達される。これにより、一方の圧入軸１０を支持する第１支持台５に撓みが生じることを抑制できる。したがって、一方の圧入軸１０の芯ズレを防止できる。   Further, since the press-fit shaft is divided into one press-fit shaft 10 and the other press-fit shaft 20, the reaction force generated when the press-fitted member 4 is press-fitted is passed through the one press-fit shaft 10 to the other press-fit shaft. 20 is transmitted. Thereby, it can suppress that the 1st support stand 5 which supports one press-fit axis | shaft 10 produces bending. Therefore, the misalignment of one press-fit shaft 10 can be prevented.

ところが、一方の圧入軸１０を介して他方の圧入軸２０に伝達された反力によって第２支持台６に撓みが生じて他方の圧入軸２０に芯ズレが発生するおそれがある。他方の圧入軸２０に芯ズレが発生した状態で一方の圧入軸１０を押圧しても、一方の圧入軸１０の端面１０ｃは球面形状を有するため、他方の圧入軸２０に芯ズレが発生した状態で一方の圧入軸１０を押圧しても、他方の圧入軸２０が回動して他方の圧入軸２０の端面２０ｂを一方の圧入軸１０の端面１０ｃに対して滑らせることができる。これにより、一方の圧入軸１０と他方の圧入軸２０の端面１０ｃ、２０ｂ同士がこじれた状態で当接することを防止できるため、両圧入軸１０、２０が破損することを防止できる。   However, the reaction force transmitted to the other press-fit shaft 20 via the one press-fit shaft 10 may cause the second support base 6 to bend and cause misalignment of the other press-fit shaft 20. Even if one of the press-fit shafts 10 is pressed while the other press-fit shaft 20 is misaligned, the end face 10c of the one press-fit shaft 10 has a spherical shape, so that the other press-fit shaft 20 is misaligned. Even if one press-fit shaft 10 is pressed in this state, the other press-fit shaft 20 can be rotated to slide the end surface 20b of the other press-fit shaft 20 with respect to the end surface 10c of the one press-fit shaft 10. Accordingly, it is possible to prevent the end faces 10c and 20b of the one press-fit shaft 10 and the other press-fit shaft 20 from being in contact with each other, so that both the press-fit shafts 10 and 20 can be prevented from being damaged.

さらに、他方の圧入軸２０の端面２０ｂは平面形状を有するため、一方の圧入軸１０の球面形状の端面１０ｃに点で当接することができる。これにより、他方の圧入軸２０に付与された押圧力を一方の圧入軸１０に効率良く伝達することができる。   Furthermore, since the end surface 20b of the other press-fit shaft 20 has a planar shape, it can come into contact with the spherical end surface 10c of the one press-fit shaft 10 at a point. Thereby, the pressing force applied to the other press-fit shaft 20 can be efficiently transmitted to the one press-fit shaft 10.

上述したように、本実施形態に係る圧入装置１によれば、一方の圧入軸１０、他方の圧入軸２０及び圧入機７を複数備えるとともに、一方の圧入軸１０及び他方の圧入軸２０の中心線は共に、圧入孔３ａ〜３ｄの中心線の延長線と一致するように所定角度で傾斜しているため、複数個所の圧入孔３ａ、３ｃに被圧入部材４を同時に圧入することができる。   As described above, according to the press-fitting device 1 according to the present embodiment, one press-fit shaft 10, the other press-fit shaft 20 and the press-fitting machine 7 are provided, and the center of the one press-fit shaft 10 and the other press-fit shaft 20 is provided. Since both the lines are inclined at a predetermined angle so as to coincide with an extension line of the center line of the press-fitting holes 3a to 3d, the press-fitting member 4 can be press-fitted into the press-fitting holes 3a and 3c at a plurality of locations simultaneously.

また、圧入軸が一方の圧入軸１０と他方の圧入軸２０とに分割されているため、複数個所で圧入を同時に行っても、各一方の圧入軸１０は芯ズレを起こすことがない。したがって、被圧入部材４を圧入孔３の奥まで確実に圧入できるとともに、圧入孔３の内周面に傷を付けることを防止できる。即ち、被圧入部材４を精度良く圧入することができる。これにより、品質管理の工数を削減することができるため、作業効率を向上させることができる。   In addition, since the press-fit shaft is divided into one press-fit shaft 10 and the other press-fit shaft 20, even if the press-fit is performed simultaneously at a plurality of locations, each of the press-fit shafts 10 will not cause misalignment. Therefore, the press-fitting member 4 can be reliably press-fitted to the depth of the press-fitting hole 3 and the inner peripheral surface of the press-fitting hole 3 can be prevented from being damaged. That is, the press-fitting member 4 can be press-fitted with high accuracy. Thereby, since the man-hour of quality control can be reduced, work efficiency can be improved.

また、他方の圧入軸２０の下端部２０ａは、一方の圧入軸１０の上端部１０ｂと当接する当接点を中心に回動可能に当接されるので、芯ズレを容易に且つ確実に回避することができる。   Further, the lower end portion 20a of the other press-fit shaft 20 is brought into contact with the upper end portion 10b of the one press-fit shaft 10 so as to be rotatable about the contact point, so that misalignment can be avoided easily and reliably. be able to.

また、特許文献１の圧入装置では、吸気側の被圧入部材を圧入した後に排気側の被圧入部材を圧入するため、各圧入機の下方へシリンダヘッドを移動させてシリンダヘッドを傾斜させる段取りが必要となるが、この段取りに時間がかかり、作業効率が低下してしまう。しかし、本発明によれば、へシリンダヘッド２を移動させたり、シリンダヘッド２を傾斜させたりする段取りを省くことができるため、更に作業効率が向上する。   Further, in the press-fitting device of Patent Literature 1, in order to press-fit the exhaust-side press-fitted member after the intake-side press-fitted member is press-fitted, there is a setup in which the cylinder head is tilted by moving the cylinder head below each press-fitting machine. Although necessary, this setup takes time and the work efficiency is reduced. However, according to the present invention, the setup for moving the cylinder head 2 or tilting the cylinder head 2 can be omitted, so that the working efficiency is further improved.

また、一方の圧入軸１０の端面１０ｃは球面形状を有するため、上述したように、一方の圧入軸１０と他方の圧入軸２０の端面１０ｃ、２０ｂ同士がこじれた状態で当接することを防止できる。
さらに、他方の圧入軸２０の端面２０ｂは平面形状を有するため、上述したように、他方の圧入軸２０に付与された押圧力を一方の圧入軸１０に効率良く伝達することができる。 Further, since the end surface 10c of one press-fit shaft 10 has a spherical shape, as described above, it can be prevented that the one press-fit shaft 10 and the end surfaces 10c, 20b of the other press-fit shaft 20 are in contact with each other in a state where they are twisted. .
Furthermore, since the end surface 20b of the other press-fit shaft 20 has a planar shape, the pressing force applied to the other press-fit shaft 20 can be efficiently transmitted to the one press-fit shaft 10 as described above.

本発明は、被圧入部品を圧入する圧入装置に適用することができる。   The present invention can be applied to a press-fitting device for press-fitting a press-fit component.

１ 圧入装置
２ シリンダヘッド
３ 圧入孔
３ａ、３ｂ 吸気側の圧入孔
３ｃ、３ｄ 排気側の圧入孔
４ 被圧入部材
５ 第１支持台
６ 第２支持台
７ 圧入機
１０ 一方の圧入軸
１０ａ 下端部
１０ｂ 上端部
１０ｃ 上端部の端面
１０ｄ 拡幅部
１０ｅ 中央部
１１ 支持体
１２ 円筒部
１２ａ 下端面
１３ スプリング
１４ ボルト
２０ 他方の圧入軸
２０ａ 下端部
２０ｂ 下端部の端面
２０ｃ 上端部
３１ａ、３１ｂ、３１ｃ、３１ｄ 気筒
３２ａ、３２ｂ、３２ｃ、３２ｄ シート用孔 DESCRIPTION OF SYMBOLS 1 Press-in apparatus 2 Cylinder head 3 Press-in hole 3a, 3b Inlet-side press-in hole 3c, 3d Exhaust-side press-in hole 4 Press-fitted member 5 First support base 6 Second support base 7 Press-in machine 10 One press-in shaft 10a Lower end 10b upper end portion 10c upper end portion end surface 10d widened portion 10e central portion 11 support 12 cylindrical portion 12a lower end surface 13 spring 14 bolt 20 other press-fit shaft 20a lower end portion 20b lower end end surface 20c upper end portions 31a, 31b, 31c, 31d Cylinder 32a, 32b, 32c, 32d Seat hole

Claims (6)

エンジンのシリンダヘッドに形成された圧入孔内に被圧入部材を圧入する圧入装置であって、
前記被圧入部材を前記圧入孔の中心線方向に圧入する圧入軸が、当該中心線方向に２分割されており、
前記分割された前記圧入軸のうち、一方の圧入軸の一端部を前記被圧入部材に当接させるとともに、前記一方の圧入軸を前記圧入孔の中心線に沿って摺動可能に支持する第１支持台と、
前記分割された前記圧入軸のうち、他方の圧入軸の一端部を前記一方の圧入軸の他端部に当接させるとともに、前記他方の圧入軸を前記圧入孔の中心線に沿って摺動可能に支持する第２支持台と、
前記一方の圧入軸側へ向かって前記他方の圧入軸に押圧力を付与する圧入機と、を備え、
前記圧入機によって前記他方の圧力軸に付与された押圧力を前記一方の圧力軸を介して前記被圧入部材に伝達することを特徴とする圧入装置。 A press-fitting device for press-fitting a press-fit member into a press-fitting hole formed in a cylinder head of an engine,
A press-fit shaft for press-fitting the press-fitted member in the center line direction of the press-fit hole is divided into two in the center line direction,
Of the divided press-fit shafts, one end of one press-fit shaft is brought into contact with the press-fit member, and the one press-fit shaft is slidably supported along the center line of the press-fit hole. 1 support base,
Of the divided press-fit shafts, one end of the other press-fit shaft is brought into contact with the other end of the one press-fit shaft, and the other press-fit shaft is slid along the center line of the press-fit hole. A second support base that supports it;
A press-fitting machine that applies a pressing force to the other press-fitting shaft toward the one press-fitting shaft,
A press-fitting device, wherein a pressing force applied to the other pressure shaft by the press-fitting machine is transmitted to the press-fitted member through the one pressure shaft. 他方の圧入軸の一端部は、前記一方の圧入軸の他端部に、当該一方の圧入軸と当接する当接点を中心として回動可能に当接されることを特徴とする請求項１に記載の圧入装置。   The one end portion of the other press-fit shaft is brought into contact with the other end portion of the one press-fit shaft so as to be rotatable around a contact point that comes into contact with the one press-fit shaft. The press-fitting device described. 前記圧入孔は、鉛直線に対して予め設定された所定角度で傾斜しており、
前記一方の圧力軸及び前記他方の圧力軸の中心線は共に、前記圧入孔の前記中心線の延長線と一致するように設けられていることを特徴とする請求項１又は２に記載の圧入装置。 The press-fitting hole is inclined at a predetermined angle with respect to a vertical line,
The press-fit according to claim 1 or 2, wherein center lines of the one pressure axis and the other pressure axis are provided so as to coincide with an extension line of the center line of the press-fit hole. apparatus. 前記一方の圧入軸、前記他方の圧入軸及び前記圧入機は、前記第１支持台及び前記第２支持台にそれぞれ複数設けられていることを特徴とする請求項１〜３のうち何れか一項に記載の圧入装置。   The said one press-fit shaft, the said other press-fit shaft, and the said press-fitting machine are each provided with two or more by the said 1st support stand and the said 2nd support stand, The any one of Claims 1-3 characterized by the above-mentioned. The press-fitting device according to the item. 前記一方の圧力軸における前記他端部の前記端面は、球面形状を有し、
前記他方の圧力軸における前記一端部の前記端面は、平面形状を有することを特徴とする請求項１〜４のうち何れか一項に記載の圧入装置。 The end surface of the other end of the one pressure axis has a spherical shape,
The press-fitting device according to any one of claims 1 to 4, wherein the end surface of the one end portion of the other pressure shaft has a planar shape. 前記被圧入部材は、バルブガイド及びバルブシートのうち少なくとも何れか一方であることを特徴とする請求項１〜５のうち何れか一項に記載の圧入装置。   The press-fitting device according to claim 1, wherein the press-fitting member is at least one of a valve guide and a valve seat.
JP2012240390A 2012-10-31 2012-10-31 Press-in device Pending JP2014087907A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156181A (en) * 1981-03-19 1982-09-27 Yamaha Motor Co Ltd Industrial assembling robot device
JPS6112643U (en) * 1984-06-26 1986-01-24 日東精工株式会社 Pin press-fit unit for industrial robots
JPS6119521A (en) * 1984-07-04 1986-01-28 Mazda Motor Corp Changing device for jig angle
JPS61181107U (en) * 1985-04-30 1986-11-12
JPS62174834U (en) * 1986-04-28 1987-11-06
JPS6322228A (en) * 1986-07-15 1988-01-29 Mazda Motor Corp Press-fitting assembly system using robot
JP2009233813A (en) * 2008-03-27 2009-10-15 Daihatsu Motor Co Ltd Press-fitting device for cylinder head

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156181A (en) * 1981-03-19 1982-09-27 Yamaha Motor Co Ltd Industrial assembling robot device
JPS6112643U (en) * 1984-06-26 1986-01-24 日東精工株式会社 Pin press-fit unit for industrial robots
JPS6119521A (en) * 1984-07-04 1986-01-28 Mazda Motor Corp Changing device for jig angle
JPS61181107U (en) * 1985-04-30 1986-11-12
JPS62174834U (en) * 1986-04-28 1987-11-06
JPS6322228A (en) * 1986-07-15 1988-01-29 Mazda Motor Corp Press-fitting assembly system using robot
JP2009233813A (en) * 2008-03-27 2009-10-15 Daihatsu Motor Co Ltd Press-fitting device for cylinder head

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