JP6751488B1 - Coil spring processing device and coil spring processing method - Google Patents
Coil spring processing device and coil spring processing method Download PDFInfo
- Publication number
- JP6751488B1 JP6751488B1 JP2020003180A JP2020003180A JP6751488B1 JP 6751488 B1 JP6751488 B1 JP 6751488B1 JP 2020003180 A JP2020003180 A JP 2020003180A JP 2020003180 A JP2020003180 A JP 2020003180A JP 6751488 B1 JP6751488 B1 JP 6751488B1
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- coil spring
- press
- tool
- base end
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Wire Processing (AREA)
Abstract
【課題】拡径治具に拡径されて密着せしめられたコイルばねを拡径治具から離脱させるための具体的な加工方法を提案すると共に、かかる加工方法を用いて多数のコイルばねに連続して所要とおりの加工処理を遂行することが可能な加工装置を提供すること。【解決手段】支持基板４の片面１２に拡径治具６の基端を接続すると共に、支持基板４には拡径治具６の基端の外周に沿って少なくとも１個の貫通穴１８を形成し、離脱具１０が支持基板４の他面１６側から貫通穴１８を通って拡径治具６の基端から先端に向かう方向に移動する際に、拡径治具６の基端部２４に位置するコイルばねに当接してコイルばねを拡径治具２４の先端部に向かって移動させる。【選択図】図１PROBLEM TO BE SOLVED: To propose a specific processing method for separating a coil spring which has been expanded in diameter and brought into close contact with a diameter-expanding jig from the diameter-expanding jig, and continuously to a large number of coil springs by using such a processing method. To provide a processing device capable of carrying out the required processing. SOLUTION: A base end of a diameter-expanding jig 6 is connected to one side 12 of a support substrate 4, and at least one through hole 18 is provided in the support substrate 4 along the outer periphery of the base end of the diameter-expanding jig 6. When the release tool 10 is formed and moves from the other surface 16 side of the support substrate 4 through the through hole 18 in the direction from the base end to the tip of the diameter expansion jig 6, the base end portion of the diameter expansion jig 6 is formed. The coil spring is brought into contact with the coil spring located at 24 and moved toward the tip of the diameter-expanding jig 24. [Selection diagram] Fig. 1
Description
本発明は、コイルばねを一時的に拡径させる加工処理を行うための加工装置及び加工方法に関する。 The present invention relates to a processing device and a processing method for performing a processing process for temporarily expanding the diameter of a coil spring.
従来から、コイルばねを製造する工程においては、コイルばねの所謂へたりを防止することを目的として「セッチング」と呼ばれる加工処理が行われている。かかる加工処理は、コイルばねを一時的に拡径させるものであって、冷間（常温）若しくは温間（例えば２００乃至４００度）で行われる。コイルばねをセッチングするための加工装置としては、下記特許文献１に開示されている形態の加工装置が存在する。 BACKGROUND ART Conventionally, in a process of manufacturing a coil spring, a processing process called “setting” is performed for the purpose of preventing so-called fatigue of the coil spring. Such processing is for temporarily expanding the diameter of the coil spring, and is performed cold (normal temperature) or warm (for example, 200 to 400 degrees). As a processing device for setting the coil spring, there is a processing device of the form disclosed in Patent Document 1 below.
下記特許文献１に開示されているコイルばねの加工装置は、基端から先端に向かって外径が漸次低減する円錐台形状部を備えた拡径治具と、この拡径治具の両端部に配置されたカラーとを備えている。拡径治具の両端部には小径円柱形状部及び大径円柱形状部が設けられており、小径円柱形状部と円錐台形上部と大円柱形状部とは軸方向に直列に接続されている。コイルばねは、最初に小円柱形状部に被嵌され、次いで小円柱形状部側に位置するカラーが大円柱形状部に向かって移動することでこれに当接してこれと共に大円柱形状部に移動せしめられる。コイルばねは円錐台形上部を通過する際に拡径せしめられ、大径円柱形状部においてその外周面に密着せしめられる。 A coil spring processing device disclosed in Patent Document 1 below includes a diameter-expanding jig including a truncated cone-shaped portion whose outer diameter gradually decreases from a base end toward a tip, and both end portions of the diameter-expanding jig. And arranged in a color. A small-diameter cylindrical portion and a large-diameter cylindrical portion are provided at both ends of the diameter-expanding jig, and the small-diameter cylindrical portion, the truncated cone-shaped upper portion, and the large cylindrical-shaped portion are connected in series in the axial direction. The coil spring is first fitted into the small cylindrical portion, and then the collar located on the small cylindrical portion side moves toward the large cylindrical portion, abuts against this, and moves with it to the large cylindrical portion. Be punished. The coil spring is expanded in diameter when passing through the upper part of the truncated cone, and is closely attached to the outer peripheral surface of the large-diameter columnar part.
而して、特許文献１には必ずしも拡径治具の大径円柱形状部の外周面に密着せしめられたコイルばねを拡径治具から離脱させるための具体的な手段については開示されておらず、多数のコイルばねを連続して効率的に上述した加工処理を行うことができない。 Thus, Patent Document 1 does not necessarily disclose a specific means for detaching the coil spring closely attached to the outer peripheral surface of the large-diameter columnar portion of the diameter-expanding jig from the diameter-expanding jig. Therefore, the above-described processing cannot be efficiently performed on a large number of coil springs.
本発明は上記事実に鑑みてなされたものであり、その主たる技術的課題は、拡径治具に拡径されて密着せしめられたコイルばねを拡径治具から離脱させるための具体的な加工方法を提案すると共に、かかる加工方法を用いて多数のコイルばねに連続して所要とおりの加工処理を遂行することが可能な加工装置を提供することである。 The present invention has been made in view of the above facts, and its main technical problem is to perform a specific processing for separating a coil spring expanded and closely attached to a diameter expanding jig from the diameter expanding jig. A method is proposed, and a processing apparatus capable of continuously performing a desired processing operation on a large number of coil springs by using such a processing method is provided.
本発明者等は、鋭意検討の結果、支持基板の片面に拡径治具の基端を接続すると共に、支持基板には拡径治具の基端の外周に沿って少なくとも１個の貫通穴を形成し、離脱具が支持基板の他面側から貫通穴を通って拡径治具の基端から先端に向かう方向に移動する際に、拡径治具の基端部に位置するコイルばねに当接してコイルばねを拡径治具の先端部に向かって移動させることで、上記主たる技術的課題を達成することを見出した。 As a result of diligent studies, the inventors of the present invention have connected the base end of the diameter-expanding jig to one surface of the support substrate, and have at least one through hole along the outer periphery of the base end of the diameter-expansion jig in the support substrate. A coil spring positioned at the base end of the diameter expanding jig when the detachment tool moves from the other surface side of the support substrate through the through hole in the direction from the base end of the diameter expanding jig to the tip. It has been found that the above-mentioned main technical problem can be achieved by moving the coil spring toward the distal end portion of the diameter-expanding jig by abutting against.
即ち、本発明の第一の局面によれば、上記主たる技術的課題を解決するためのコイルばねの加工装置として、支持基板、基端が該支持基板の片面に接続された拡径治具、圧入具及び離脱具を備え、
該拡径治具は該基端から先端に向かって外径が漸次低減する円錐台形状部を有し、
該圧入具は、該拡径治具に対して該先端から該基端に向かう作動方向及び該基端から該先端に向かう離脱方向に往復動自在であり、該作動方向に移動される際に該拡径治具の先端部に被嵌されたコイルばねに当接してコイルばねを該拡径治具の基端部に移動させて拡径し、
該支持基板には、該拡径治具の該基端の外周に沿って少なくとも１個の貫通孔が形成されており、
該離脱具は、該支持基板の他面側から該貫通孔を通って該拡径治具の該基端から該先端に向かう作動方向及び該先端から該基端に向かう離脱方向に往復動自在であり、該作動方向に移動する際に、該拡径治具の該基端部に位置するコイルばねに当接してコイルばねを該拡径治具の先端部に移動させて該拡径治具から離脱させる、ことを特徴とするコイルばね加工装置が提供される。
That is, according to the first aspect of the present invention, as a coil spring processing device for solving the main technical problems, a supporting substrate, a diameter-expanding jig whose base end is connected to one surface of the supporting substrate, Equipped with a press-fitting tool and a releasing tool,
The diameter-expanding jig has a truncated cone-shaped portion whose outer diameter gradually decreases from the base end to the tip,
The press-fitting tool is reciprocally movable with respect to the diameter-expanding jig in an operating direction from the distal end to the proximal end and in a detaching direction from the proximal end to the distal end, and when moved in the operating direction. Abutting against the coil spring fitted to the tip end of the diameter expanding jig to move the coil spring to the base end of the diameter expanding jig to expand the diameter;
In the support substrate, at least one through hole is formed along the outer periphery of the base end of the diameter expanding jig,
The detachment tool is reciprocally movable from the other surface side of the support substrate through the through hole in an operation direction from the base end to the tip of the diameter expanding jig and in a detachment direction from the tip to the base end. When moving in the operating direction, the coil spring is brought into contact with the coil spring located at the base end of the diameter expanding jig to move the coil spring to the tip end of the diameter expanding jig. A coil spring machining device is provided which is detached from a tool.
好ましくは、該拡径治具の該基端部に移動されたコイルばねは加熱手段によって加熱される。該貫通孔は扇形状であって直径方向に対向して２つ形成されているのが好適である。該圧入具は、断面が円弧形状であって該作動方向に直線状に延びる複数個の圧入作用片を円筒形状に組み合わせて構成され、該複数個の圧入作用片の夫々の基端部は固定されているが、先端は自由端であるのが好ましい。この場合には、該圧入具の先端部の外周面には弾性リングが配設されているのがよい。また、該圧入具の内側にはコイルスプリングによって該作動方向に付勢された押圧片が配設されているのが好ましい。更に、該圧入具の該先端の内径は、該拡径治具の該先端部の外径よりも大きく且つ該拡径治具の該基端部の外径よりも小さいのが好都合である。好適には、該離脱具は、直線状に延びて該貫通孔の断面形状と対応した断面形状を有する離脱作用片を備えており、該離脱具が該作動方向に移動すると、該離脱作用片の先端部が該貫通孔を通過する。好ましくは、該離脱具の外周面には、コイルスプリングが装着されている。該支持基板には該拡径治具が複数設けられており、複数の該拡径治具の夫々に該貫通孔が形成されているのが好適である。所定搬送方向に沿って該支持基板を該圧入具及び該離脱具に対して移動可能な搬送手段を備えているのがよい。 Preferably, a coil spring which is moved to the base end portion of the enlarged径治device is heated by the pressurized heat means. It is preferable that the through-holes are fan-shaped and that two holes are formed facing each other in the diametrical direction. The press-fitting tool is configured by combining a plurality of press-fitting action pieces that have an arc-shaped cross section and linearly extends in the operating direction into a cylindrical shape, and the respective base end portions of the plurality of press-fitting action pieces are fixed. However, the tip is preferably free. In this case, an elastic ring is preferably arranged on the outer peripheral surface of the tip of the press-fitting tool. Further, it is preferable that a pressing piece biased in the actuating direction by a coil spring is arranged inside the press-fitting tool. Further, it is convenient that the inner diameter of the tip of the press-fitting tool is larger than the outer diameter of the tip portion of the diameter expanding jig and smaller than the outer diameter of the base end portion of the diameter expanding jig. Preferably, the release tool includes a release action piece that extends linearly and has a cross-sectional shape corresponding to the cross-sectional shape of the through hole, and when the release tool moves in the operation direction, the release action piece. The leading end of the through hole passes through the through hole. Preferably, a coil spring is attached to the outer peripheral surface of the detachment tool. It is preferable that the support substrate is provided with a plurality of the diameter expanding jigs, and the through holes are formed in each of the plurality of the diameter expanding jigs. It is preferable to include a transporting unit that can move the support substrate with respect to the press-fitting tool and the detaching tool along a predetermined transport direction.
また、本発明の第二の局面によれば、支持基板、基端が該支持基板の片面に接続された拡径治具、圧入具及び離脱具を備え、
該支持基板には、該拡径治具の該基端の外周に沿って少なくとも１個の貫通孔が形成されており、
該拡径治具は該基端から先端に向かって外径が漸次低減する円錐台形状部を有し、
該圧入具は、該拡径治具に対して該先端から該基端に向かう作動方向及び該基端から該先端に向かう離脱方向に往復動自在であり、
該離脱具は、該拡径治具に対して該基端から該先端に向かう作動方向及び該先端から該基端に向かう離脱方向に往復動自在である装置を用いたコイルばねの加工方法であって、
該圧入具が該作動方向に移動することで、該圧入具の先端が該拡径治具の先端部に被嵌されたコイルばねに当接してコイルばねを該拡径治具の基端部に移動させて拡径させる圧入工程と、
該圧入工程の後に該離脱具が該作動方向に移動することで、該離脱具の先端が該支持基板の他面側から該貫通孔を通って該拡径治具の該基端部に位置するコイルばねに当接してコイルばねを該拡径治具の先端部に移動させて該拡径治具から離脱させる離脱工程とを含む、ことを特徴とするコイルばねの加工方法が提供される。
Further, according to a second aspect of the present invention, a support substrate, a diameter-expanding jig whose base end is connected to one surface of the support substrate, a press-fitting tool and a releasing tool,
In the support substrate, at least one through hole is formed along the outer periphery of the base end of the diameter expanding jig,
The diameter-expanding jig has a truncated cone-shaped portion whose outer diameter gradually decreases from the base end to the tip,
The press-fitting tool is reciprocally movable with respect to the diameter-expanding jig in an operating direction from the tip end to the base end and in a detaching direction from the base end to the tip end,
The detaching tool is a coil spring machining method using a device that is reciprocally movable with respect to the diameter expanding jig in an operating direction from the base end to the tip and in a detaching direction from the tip to the base end. There
When the press-fitting tool moves in the operating direction, the tip of the press-fitting tool abuts the coil spring fitted to the tip end of the diameter-expanding jig to move the coil spring to the base end part of the diameter-expanding jig. Press-fitting process to move to and expand the diameter,
After the press-fitting step, the detachment tool moves in the operating direction so that the tip of the detachment tool is positioned at the base end of the diameter-expanding jig through the through hole from the other surface side of the support substrate. And a detaching step of moving the coil spring to the tip end portion of the diameter expanding jig to detach it from the diameter expanding jig. ..
本発明のコイルばねの加工装置においては、拡径治具の基端が支持基板の片側に接続され、支持基板には拡径治具の基端の外周に沿って少なくとも１個の貫通穴が形成されており、（１）圧入具が拡径治具に対してその先端から基端に向かう作動方向に移動する際に、拡径治具の先端部に被嵌されたコイルばねに当接してこれを拡径治具の基端部に移動させて拡径し、（２）離脱具が支持基板の他面側から貫通穴を通って拡径治具の基端から先端に向かう方向に移動する際に、離脱具が拡径治具の基端部に位置するコイルばねに当接してこれを拡径治具の先端部に移動させて拡径治具から離脱させる。このことから、上記（１）及び（２）を交互に繰り返すことで多数のコイルばねを連続して効率的に所要とおりの加工処理を施すことができる。 In the coil spring machining apparatus of the present invention, the base end of the diameter expanding jig is connected to one side of the supporting substrate, and the supporting substrate has at least one through hole along the outer periphery of the base end of the diameter expanding jig. (1) When the press-fitting tool moves in the operating direction from the tip to the base end with respect to the diameter-expanding jig, it comes into contact with the coil spring fitted to the tip end of the diameter-expanding jig. And move it to the base end of the diameter expansion jig to expand the diameter. (2) The detachment tool goes from the other side of the support substrate through the through hole to the direction from the base end of the diameter expansion jig to the tip. When moving, the detaching tool abuts on the coil spring located at the base end of the diameter expanding jig and moves it to the tip end of the diameter expanding jig to separate it from the diameter expanding jig. From this, by repeating the above (1) and (2) alternately, a large number of coil springs can be continuously and efficiently processed as required.
以下、添付図面を参照して、本発明に従って構成されたコイルばねの加工装置及び加工方法の好適実施形態について、更に詳述する。 Hereinafter, preferred embodiments of a coil spring processing apparatus and processing method configured according to the present invention will be described in further detail with reference to the accompanying drawings.
図１に示すとおり、全体が番号２で示される本発明に従って構成されたコイルばねの加工装置は、支持基板４、拡径治具６、圧入具８及び離脱具１０を備えている。図示の実施形態においては、圧入具８及び離脱具１０は床面１２に設置された後述する搬送レール３０に沿って直列に配置されている。 As shown in FIG. 1, a coil spring machining apparatus, which is generally designated by the numeral 2 and is configured according to the present invention, includes a support substrate 4, a diameter expanding jig 6, a press-fitting tool 8 and a releasing tool 10. In the illustrated embodiment, the press-fitting tool 8 and the releasing tool 10 are arranged in series along a transport rail 30 which will be described later and is installed on the floor 12.
図６−１乃至図６−３を参照して説明すると、支持基板４は全体的に正方形であって、その片面１４には拡径治具６の基端が接続されている。支持基板４には、拡径治具６の基端の外周に沿って片面１４から他面１６に貫通する少なくとも１個の貫通孔１８が形成されている（図１においては、貫通孔１８は省略されている）。図示の実施形態においては、支持基板４には９個の拡径治具６が３行３列の格子状に間隔をおいて設けられており、９個の拡径治具６の夫々に貫通孔１８が形成されている。貫通孔１８はいずれも扇形状であり、平面視において直径方向に対向して２つずつ形成されている。図６−３下段図を参照して説明すると、断面が扇形状である貫通孔１８の内周面のうち、周方向両側面及び径方向外側面はいずれも他面１６から片面１４に向かって垂直に延出しているが、径方向内側面は他面１６から片面１４に向かって径方向外側に傾斜して延出しており、かかる面は離脱具案内面２０をなしている（図６−１及び６−２も参照されたい）。図６−１を参照することによって理解されるとおり、かかる離脱具案内面２０は片面１４において拡径治具６の基端に接続されている。支持基板４には、その片面１４から他面１６に貫通する小孔２１も形成されている。小孔２１は支持基板４に間隔をおいて多数設けられており、これらは支持基板４を後述する搬送テーブルに載置する際の位置合わせのために用いられる。 Describing with reference to FIGS. 6-1 to 6-3, the support substrate 4 is generally square, and the base end of the diameter expansion jig 6 is connected to one surface 14 of the support substrate 4. At least one through hole 18 penetrating from one surface 14 to the other surface 16 is formed in the support substrate 4 along the outer periphery of the base end of the diameter expanding jig 6 (in FIG. 1, the through hole 18 is Omitted). In the illustrated embodiment, the support substrate 4 is provided with nine diameter-expanding jigs 6 at intervals in a grid pattern of 3 rows and 3 columns, and each of the nine diameter-expanding jigs 6 is penetrated. A hole 18 is formed. Each of the through holes 18 has a fan shape, and two through holes 18 are formed facing each other in the diametrical direction in a plan view. Explaining with reference to the lower diagram of FIG. 6-3, of the inner peripheral surface of the through hole 18 having a fan-shaped cross section, both the circumferential side surfaces and the radial outer surface are directed from the other surface 16 toward the one surface 14. Although extending vertically, the radially inner surface extends from the other surface 16 toward the one surface 14 in a radially outwardly inclined manner, and this surface forms a release tool guide surface 20 (FIG. 6- See also 1 and 6-2). As can be understood by referring to FIG. 6A, the detachment tool guide surface 20 is connected to the base end of the diameter expanding jig 6 on one surface 14. The support substrate 4 also has a small hole 21 penetrating from one surface 14 to the other surface 16. A large number of small holes 21 are provided on the support substrate 4 at intervals, and these are used for alignment when the support substrate 4 is placed on a transport table described later.
拡径治具６は支持基板４の片面１４に接続された基端から図６−３の中段図において上方に延びる断面円形の軸状部材であって、基端から先端に向かって外径が漸次低減する円錐台形状部２２を有している。図示の実施形態においては、拡径治具６には、支持基板４の片面１４に接続されて外径が比較的大きく且つ軸方向に一定な基端部２４が形成されており、基端部２４の上端に円錐台形状部２２の基端（下端）が接続されている。基端部２４の外径と円錐台形状部２２の基端の外径とは同一である。円錐台形状部２２の上端には上方に向かって膨出する頂部２６も形成されている。拡径治具６は図示しない加熱手段によって少なくともその外周面が加熱されるようにしてもよい。加熱手段は、これが拡径治具６の内部に配設されて拡径治具６をその内側から加熱するものであっても、拡径治具６の外部に配設されて拡径治具６をその外側から加熱するものであってもよい。 The diameter-expanding jig 6 is a shaft-shaped member having a circular cross section that extends upward from the base end connected to the one surface 14 of the support substrate 4 in the middle diagram of FIG. 6C, and has an outer diameter from the base end toward the tip. It has a frustoconical portion 22 that gradually decreases. In the illustrated embodiment, the diameter-expanding jig 6 is formed with a base end portion 24 connected to one surface 14 of the support substrate 4 and having a relatively large outer diameter and a constant axial direction. The base end (lower end) of the truncated cone-shaped portion 22 is connected to the upper end of 24. The outer diameter of the base end portion 24 and the outer diameter of the base end of the truncated cone shape portion 22 are the same. A top portion 26 that bulges upward is also formed at the upper end of the truncated cone-shaped portion 22. At least the outer peripheral surface of the diameter expanding jig 6 may be heated by a heating means (not shown). Even if the heating means is arranged inside the diameter expanding jig 6 to heat the diameter expanding jig 6 from the inside thereof, the heating means is arranged outside the diameter expanding jig 6 6 may be heated from the outside.
図示の実施形態においては、支持基板４及び拡径治具６は共に金属製であってこれらは各別に成形された後に適宜の固定方法によって固定されているが、所望ならば、これらは適宜の金属加工方法によって一体で成形されてもよい。なお、図示の実施形態においては、支持基板４は金属製であるが、これは合成樹脂製であってもよい。 In the illustrated embodiment, the support substrate 4 and the diameter-expanding jig 6 are both made of metal, and they are separately molded and then fixed by an appropriate fixing method. It may be integrally formed by a metal working method. Although the support substrate 4 is made of metal in the illustrated embodiment, it may be made of synthetic resin.
図１を参照して説明すると、拡径治具６が接続された支持基板４は搬送手段２８によって圧入具８及び離脱具１０に対し所定搬送方向（同図において矢印で示す方向）に移動自在である。搬送手段２８は、床面１２に配設された搬送レール３０と、搬送レール３０上をこれに沿って移動可能な搬送テーブル３２とを備えている。搬送テーブル３２は図示しない駆動源によって連続的又は間欠的に移動可能である。拡径治具６が接続された支持基板４は小孔２１を用いて搬送テーブル３２上の所定位置に直接又は後述する補助台を介して配置される。 Referring to FIG. 1, the support substrate 4 to which the diameter-expanding jig 6 is connected is movable in a predetermined conveying direction (direction shown by an arrow in the figure) with respect to the press-fitting tool 8 and the detaching tool 10 by the carrying means 28. Is. The transfer means 28 includes a transfer rail 30 arranged on the floor 12 and a transfer table 32 movable on the transfer rail 30. The transport table 32 can be moved continuously or intermittently by a drive source (not shown). The support substrate 4 to which the diameter-expanding jig 6 is connected is arranged at a predetermined position on the transport table 32 using the small hole 21 directly or via an auxiliary stand described later.
図１乃至図３を参照して説明すると、図示の実施形態においては、圧入具８はその全体が床面１２から上方に離隔した状態で圧入具保持部材３４によって保持されている。図７−１乃至図７−３も参照して圧入具８について更に説明を続けると、圧入具８は、断面が円弧形状であって上下方向に直線状に延びる複数個（図示の実施形態においては４個）の圧入作用片３６を円筒形状に組み合わせて構成されている。圧入作用片３６は金属製であって、その上端部には小孔３８が形成されている。圧入作用片３６は、小孔３８にボルトの如き適宜の固定具を挿通することで、上端部が圧入具保持部材３４の一部である接続部４０（図７−２及び図７−３において二点鎖線で示す）の外周面に固定され、下端面が床面１２と対向する。このことから、圧入作用片３６の上端は固定端であるが下端は自由端であって、圧入作用片３６の下端部は径方向へ僅かに弾性変形が可能となる。圧入作用片３６の下端には径方向内側に延出する扇形状の端板片４２が設けられており、複数の圧入作用片３６を組み合わせることで、圧入具８の下端には中央に開口が形成された端板４４が画成される。圧入具８の内側にはコイルスプリング４６によって下方に向かって付勢された押圧片４８が配設されている。押圧片４８はコイルスプリング４６によって上述したとおりに付勢されているものの、端板４４によって圧入具８の外方に飛び出すことは規制されている。圧入作用片３６の下端部の外周面には周方向に延びる溝５０が形成されており、すべての圧入作用片３６の溝５０には共通の弾性リング５２が装着されている。 Referring to FIGS. 1 to 3, in the illustrated embodiment, the press-fitting tool 8 is held by a press-fitting tool holding member 34 in a state where the press-fitting tool 8 is entirely separated from the floor surface 12 upward. Continuing the description of the press-fitting tool 8 with reference also to FIGS. 7-1 to 7-3, the press-fitting tool 8 has a plurality of press-fitting tools 8 each having an arc-shaped cross section and extending linearly in the vertical direction (in the illustrated embodiment, Is four) and the press-fitting action pieces 36 are combined into a cylindrical shape. The press-fitting action piece 36 is made of metal, and a small hole 38 is formed in the upper end thereof. The press-fitting action piece 36 has a connecting portion 40 (in FIGS. 7-2 and 7-3) whose upper end is a part of the press-fitting tool holding member 34 by inserting an appropriate fixing tool such as a bolt into the small hole 38. It is fixed to the outer peripheral surface (shown by the chain double-dashed line), and the lower end surface faces the floor surface 12. Therefore, the upper end of the press-fitting action piece 36 is a fixed end, but the lower end is a free end, and the lower end portion of the press-fitting action piece 36 can be slightly elastically deformed in the radial direction. A fan-shaped end plate piece 42 extending inward in the radial direction is provided at the lower end of the press-fitting action piece 36. By combining a plurality of press-fitting action pieces 36, an opening is formed at the center at the lower end of the press-fitting tool 8. A formed end plate 44 is defined. Inside the press-fitting tool 8, a pressing piece 48 urged downward by a coil spring 46 is arranged. Although the pressing piece 48 is urged by the coil spring 46 as described above, the end plate 44 prevents the pressing piece 48 from jumping out of the press-fitting tool 8. A groove 50 extending in the circumferential direction is formed on the outer peripheral surface of the lower end portion of the press-fitting action pieces 36, and a common elastic ring 52 is attached to the grooves 50 of all the press-fitting action pieces 36.
図２及び図３を参照して説明を続けると、図示の実施形態においては、圧入具保持部材３４は３個の圧入具８を共通して保持しており、これら３個の圧入具８は支持基板４の片面１４に接続された複数個の拡径治具６と対応して１行３列で配列される。つまり、所定の状態においては、３個の圧入具８は同時に３個の拡径治具６と所定搬送方向において整合可能である。圧入具保持部材３４は、床面１２に配置された支持台５４の天板５６の下面に接続されており、図示しない駆動源によって上下方向に移動可能である。これにより、圧入具８は、拡径治具６に対して先端から基端に向かう作動方向（同図において実線矢印で示す方向であって、本実施形態においては同図の下方向）及び基端から先端に向かう離脱方向（同図において破線矢印で示す方向であって、本実施形態においては同図の上方向）に往復動自在となる。 Continuing the description with reference to FIG. 2 and FIG. 3, in the illustrated embodiment, the press-fitting tool holding member 34 holds three press-fitting tools 8 in common, and these three press-fitting tools 8 are It is arranged in one row and three columns corresponding to the plurality of diameter-expanding jigs 6 connected to one surface 14 of the support substrate 4. That is, in a predetermined state, the three press-fitting tools 8 can be simultaneously aligned with the three diameter-expanding jigs 6 in the predetermined transport direction. The press-fitting tool holding member 34 is connected to the lower surface of the top plate 56 of the support base 54 arranged on the floor 12 and can be moved in the vertical direction by a drive source (not shown). As a result, the press-fitting tool 8 operates in a direction from the tip to the base end with respect to the diameter-expanding jig 6 (the direction indicated by the solid line arrow in the figure, which is the downward direction in the figure) and the base. It is reciprocally movable in the detaching direction from the end to the tip (the direction indicated by the dashed arrow in the figure, which is the upward direction in the figure in the present embodiment).
図１と共に図４及び図５を参照して説明すると、図示の実施形態においては、離脱具１０はその全体が床面１２から上方に離隔した状態で離脱具保持部材５８によって保持されている。図８−１乃至図８−３を参照して離脱具１０について更に説明を続けると、離脱具１０は、上下方向に延びる一対の離脱作用片６０を組み合わせることで構成されている。離脱作用片６０は金属製であって、上方の基部６２と、基部６２の下端から下方に延出する爪部６４とに区画される。基部６２は全体的に半円筒形状であって、その上端部の周方向中央には小孔６６が形成されている。爪部６４の断面形状は円弧形状であり、基部６２の周方向中央の下面に接続されている。爪部６４の周方向角度領域は、基部６２の下端に接続される上端部を除いて比較的小さく且つ下方に向かって漸次低減せしめられており、少なくとも下端部は支持基板４に形成された貫通孔１８を通過可能である。爪部６４は更にその全体が下方に向かって径方向内側に幾分傾斜せしめられている。離脱作用片６０は、小孔６６にボルトの如き適宜の固定具を挿通することで上端部が離脱具保持部材５８の一部である接続部（図示せず）の外周面に固定され、下端面が床面１２と対向する。このことから、離脱作用片６０の上端は固定端であるが下端は自由端であって、離脱作用片６０の下端部は径方向へ僅かに弾性変形が可能である。図示の実施形態においては、離脱具１０の外周面には、図８−３に示すように、コイルスプリング６８が配設されている。コイルスプリング６８の上端部は離脱具１０の外周面に固定されているが下端は自由端である。図１、図４及び図５においては、コイルスプリング６８は省略して示されている。 Referring to FIGS. 4 and 5 together with FIG. 1, in the illustrated embodiment, the detachment tool 10 is held by the detachment tool holding member 58 in a state where the detachment tool 10 is entirely separated from the floor surface 12 upward. Continuing the description of the release tool 10 with reference to FIGS. 8-1 to 8-3, the release tool 10 is configured by combining a pair of release action pieces 60 extending in the vertical direction. The detachment action piece 60 is made of metal and is divided into an upper base portion 62 and a claw portion 64 extending downward from the lower end of the base portion 62. The base portion 62 has a semi-cylindrical shape as a whole, and a small hole 66 is formed at the center of the upper end portion in the circumferential direction. The claw portion 64 has an arc-shaped cross-section and is connected to the lower surface of the base portion 62 at the center in the circumferential direction. The circumferential angular area of the claw portion 64 is relatively small except for the upper end portion connected to the lower end of the base portion 62, and is gradually reduced downward, and at least the lower end portion of the pawl portion 64 is a through hole formed in the support substrate 4. It is possible to pass through the hole 18. The entire claw portion 64 is slightly inclined downward inward in the radial direction. The detaching action piece 60 is fixed to the outer peripheral surface of the connecting portion (not shown) whose upper end is a part of the detaching tool holding member 58 by inserting an appropriate fixing tool such as a bolt into the small hole 66. The end surface faces the floor surface 12. From this, the upper end of the detachment action piece 60 is a fixed end, but the lower end is a free end, and the lower end portion of the detachment action piece 60 can be slightly elastically deformed in the radial direction. In the illustrated embodiment, a coil spring 68 is arranged on the outer peripheral surface of the detachment tool 10 as shown in FIG. 8C. The upper end of the coil spring 68 is fixed to the outer peripheral surface of the detachment tool 10, but the lower end is a free end. The coil spring 68 is omitted in FIGS. 1, 4 and 5.
図４及び図５を参照して説明を続けると、図示の実施形態においては、離脱具保持部材５８は３個の離脱具１０を共通して保持しており、これら３個の離脱具１０は支持基板４の片面１４に接続された拡径治具６と対応して１行３列で配列される。つまり、所定の状態においては、３個の離脱具１０は同時に３個の拡径治具６と所定搬送方向において整合可能である。離脱具保持部材５８は床面１２に配置された支持台７０の天板７２の下面に接続されており、図示しない駆動源によって上下方向に移動可能である。これにより、離脱具１０は、少なくともその先端が支持基板４の他面１６側から貫通孔１８を通って拡径治具６の基端から先端に向かう作動方向（同図において実線矢印で示す方向であって、本実施形態においては同図の下方向）及び先端から基端に向かう離脱方向（同図において破線矢印で示す方向であって、本実施形態においては同図の上方向）に往復動自在となる。なお、本実施形態においては、離脱具１０が作動する際には、支持基板４は上下反転せしめられているが、これについては後述する。 Continuing the description with reference to FIGS. 4 and 5, in the illustrated embodiment, the detachment tool holding member 58 holds three detachment tools 10 in common, and these three detachment tools 10 are Corresponding to the diameter expansion jig 6 connected to the one surface 14 of the support substrate 4, they are arranged in one row and three columns. That is, in a predetermined state, the three detaching tools 10 can be simultaneously aligned with the three diameter expanding jigs 6 in the predetermined conveying direction. The detachment tool holding member 58 is connected to the lower surface of the top plate 72 of the support base 70 arranged on the floor 12 and can be moved in the vertical direction by a drive source (not shown). As a result, at least the tip of the detachment tool 10 moves from the other surface 16 side of the support substrate 4 through the through-hole 18 toward the tip from the base end of the diameter-expanding jig 6 (the direction indicated by the solid arrow in the figure). In the present embodiment, it reciprocates in the downward direction) and in the detaching direction from the distal end to the base end (the direction indicated by the broken line arrow in the same figure, and the upward direction in the same figure in the present embodiment). Be free to move. In the present embodiment, the support substrate 4 is turned upside down when the detachment tool 10 operates, which will be described later.
図１を参照して説明すると、図示の実施形態のコイルばねの加工装置２は支持基板反転手段７４も備えている。支持基板反転手段７４は、所定搬送方向に見て圧入具８と離脱具１０との間に設けられている。上下反転せしめられた支持基板４は補助台７６によって支持された状態で搬送テーブル３２上に配置される。補助台７６は略正方形で支持基板４よりも大きい天板７８と、この天板７８の四隅から下方に垂下する脚８０とを備えており、補助台７６は搬送テーブル３２上の所定位置に配置される。天板７８には、図示は省略するが、拡径治具６及び貫通孔１８と対応する貫通孔が形成されており、支持基板４の上下を反転せしめてこれが天板７８上に支持される際には、拡径治具６は上述した天板７８に形成された図示しない貫通孔を通過する。これにより、拡径治具６が接続された支持基板４は図１の下方に示すように補助台７６に支持され、支持基板４に形成された貫通孔１８が上方に露呈せしめられる。上述した支持基板４の反転操作は人間が手動で行ってもよいし、ロボットアームやその他の機構により自動で行ってもよい。 Referring to FIG. 1, the coil spring processing apparatus 2 of the illustrated embodiment also includes a supporting substrate reversing means 74. The support substrate inverting means 74 is provided between the press-fitting tool 8 and the releasing tool 10 when viewed in the predetermined transport direction. The support substrate 4 which has been turned upside down is placed on the transport table 32 while being supported by the auxiliary table 76. The auxiliary base 76 includes a top plate 78 that is substantially square and larger than the support substrate 4, and legs 80 that hang downward from the four corners of the top plate 78. The auxiliary base 76 is arranged at a predetermined position on the transport table 32. To be done. Although not shown, the top plate 78 is formed with through holes corresponding to the diameter expanding jig 6 and the through holes 18, and the support substrate 4 is turned upside down to be supported on the top plate 78. At this time, the diameter expanding jig 6 passes through a through hole (not shown) formed in the top plate 78 described above. As a result, the support substrate 4 to which the diameter expansion jig 6 is connected is supported by the auxiliary stand 76 as shown in the lower part of FIG. 1, and the through hole 18 formed in the support substrate 4 is exposed upward. The inversion operation of the support substrate 4 described above may be manually performed by a person, or may be automatically performed by a robot arm or another mechanism.
続いて、図１と共に図９−１及び図９−２を参照して、コイルばねの加工装置２を用いてコイルばねｓを加工する工程について説明する。線材に適宜の機械加工をすることによって形成されたコイルばねｓは、図９−１に示される圧入工程で拡径治具６の基端部２４に圧入されて拡径せしめられた後、図９−２に示される離脱工程で拡径治具６から離脱せしめられる。 Next, with reference to FIG. 9-1 and FIG. 9-2 together with FIG. 1, a process of processing the coil spring s using the coil spring processing device 2 will be described. The coil spring s formed by appropriately machining the wire rod is press-fitted into the base end portion 24 of the diameter-expanding jig 6 in the press-fitting step shown in FIG. It is detached from the diameter expanding jig 6 in the detaching step shown in 9-2.
最初に、図９−１（ａ）に示されるとおり、コイルばねｓが拡径治具６の円錐台形状部２２の上端部の外周面に被嵌される。コイルばねｓが被嵌された拡径治具６は、これの基端が接続された支持基板４と共に搬送テーブル３２上の所定位置に配置される（図１も参照されたい）。このとき、圧入具８の下端は拡径治具３６の上端よりも上方に位置する。次いで、搬送テーブル３２は図１において矢印で示される所定搬送方向（又はその反対方向）に適宜移動した後、所定搬送方向の最前端に位置する３列の拡径治具６が圧入具８と整合する位置で停止する。 First, as shown in FIG. 9A, the coil spring s is fitted on the outer peripheral surface of the upper end of the truncated cone-shaped portion 22 of the diameter expanding jig 6. The diameter expansion jig 6 to which the coil spring s is fitted is arranged at a predetermined position on the transport table 32 together with the support substrate 4 to which the base end of the diameter expansion jig 6 is connected (see also FIG. 1 ). At this time, the lower end of the press-fitting tool 8 is located above the upper end of the diameter expansion jig 36. Next, the transport table 32 is appropriately moved in a predetermined transport direction indicated by an arrow in FIG. 1 (or the opposite direction), and then the three rows of the diameter-expanding jigs 6 located at the foremost end in the predetermined transport direction are used as the press fitting tools 8. Stop at the aligned position.
次いで、図９−１（ｂ）に示されるとおり、圧入具８が降下（つまり同図において実線で示される作動方向に移動）する。圧入具８が降下すると、その下端から拡径治具６が内側に進入し、拡径治具６の円錐台形上部２２の上端部に被嵌されたコイルばねｓは、圧入具８の下端に設けられた端板４４と当接して基端部２４まで下方に移動させられる。この際、コイルばねｓは円錐台形状部２２によって漸次拡径せしめられ、拡径した状態で基端部２４の外周面に密着せしめられる。また、自由状態における圧入具８の下端に設けられた端板４４の内径は拡径治具６の上端部（少なくとも円錐台形状部２２の上端）の外径よりも大きく且つ拡径治具６の基端部２４の外径よりも小さいことから、圧入具８が降下する際、その初期においては圧入具８の下端の内周面と拡径治具６の外周面とは水平方向に離隔するが、圧入具８が所定程度降下すると、圧入具８の下端の内周面と拡径治具６の外周面とが当接する。圧入具８の下端の内周面と拡径治具６の外周面とが当接した状態から圧入具８が更に降下すると、圧入作用片３６の下端は拡径治具６の外周面に沿って移動し、これによって圧入作用片３６の下端部は径方向外方に僅かに弾性変形する。このとき、圧入具８の下端部の外周面には弾性リング５２が配設されていることから、圧入作用片３６の下端部にはこれを径方向内側に押し付ける力が付与され、圧入具８はその下端がコイルばねｓを乗り越えることなく充分確実にこれを拡径治具６の基端部２４まで移動させることが可能となる。拡径治具６がその先端から圧入具８の内側に進入する際には更に、拡径治具６の先端はコイルスプリング４６によって下方に付勢された押圧片４８と当接してこれから下方に作用する反力を受ける。 Next, as shown in FIG. 9-1(b), the press-fitting tool 8 descends (that is, moves in the operating direction shown by the solid line in the figure). When the press-fitting tool 8 descends, the diameter-expanding jig 6 enters inward from the lower end thereof, and the coil spring s fitted to the upper end of the frustoconical upper portion 22 of the diameter-expanding jig 6 moves to the lower end of the press-fitting tool 8. It comes into contact with the end plate 44 provided and is moved downward to the base end portion 24. At this time, the coil spring s is gradually expanded in diameter by the truncated cone-shaped portion 22, and is brought into close contact with the outer peripheral surface of the base end portion 24 in the expanded state. Further, the inner diameter of the end plate 44 provided at the lower end of the press-fitting tool 8 in the free state is larger than the outer diameter of the upper end portion (at least the upper end of the truncated cone-shaped portion 22) of the diameter expanding jig 6 and the diameter expanding jig 6 is provided. Since the diameter is smaller than the outer diameter of the base end portion 24 of the, the inner peripheral surface of the lower end of the press-fitting tool 8 and the outer peripheral surface of the diameter-expanding jig 6 are horizontally separated when the press-fitting tool 8 descends. However, when the press-fitting tool 8 descends to a predetermined extent, the inner peripheral surface of the lower end of the press-fitting tool 8 and the outer peripheral surface of the diameter expansion jig 6 come into contact with each other. When the press-fitting tool 8 is further lowered from the state where the inner peripheral surface of the lower end of the press-fitting tool 8 is in contact with the outer peripheral surface of the diameter-expanding jig 6, the lower end of the press-fitting action piece 36 is along the outer peripheral surface of the diameter-expanding jig 6. And thus, the lower end of the press-fitting action piece 36 is slightly elastically deformed radially outward. At this time, since the elastic ring 52 is disposed on the outer peripheral surface of the lower end portion of the press-fitting tool 8, a force is applied to the lower end portion of the press-fitting action piece 36 so as to push the elastic ring 52 inward in the radial direction. It is possible to move this to the base end portion 24 of the diameter expanding jig 6 with sufficient reliability without the lower end of the coil spring getting over the coil spring s. When the diameter-expanding jig 6 enters inside the press-fitting tool 8 from its tip, the tip of the diameter-expanding jig 6 is further brought into contact with a pressing piece 48 urged downward by the coil spring 46 and then moved downward. Receive a reaction force that acts.
その後、図９−１（ｃ）に示されるとおり、圧入具８は上昇（つまり同図において破線で示される離脱方向に移動）して拡径治具６から離脱せしめられ、拡径治具６の基端部２４にはコイルばねｓが残留せしめられる。その際、図示の実施形態においては、圧入具８の下端部の外周面には弾性リング５２が配設されていることから、圧入具８の下端部が拡径治具６を把持してこれと共にこれの基端が接続された支持基板４を上昇させてしまう虞があるが、拡径治具の６の上端が下方に付勢された押圧片４８と当接することで、拡径治具６及び支持基板４の上記上昇は防止される。 Thereafter, as shown in FIG. 9-1(c), the press-fitting tool 8 rises (that is, moves in the detaching direction indicated by the broken line in the figure) to be detached from the diameter expanding jig 6, and the diameter expanding jig 6 A coil spring s is left at the base end portion 24 of the. At that time, in the illustrated embodiment, since the elastic ring 52 is arranged on the outer peripheral surface of the lower end portion of the press-fitting tool 8, the lower end portion of the press-fitting tool 8 grips the diameter-expanding jig 6. At the same time, there is a possibility that the support substrate 4 to which the base end of the same is connected is lifted, but the upper end of the diameter expanding jig 6 comes into contact with the downwardly biased pressing piece 48, so that the diameter expanding jig The rise of 6 and the supporting substrate 4 is prevented.
次いで、搬送テーブル３２が所定搬送方向に再び移動した後、所定搬送方向の前方から２番目に位置する３列の拡径治具６が圧入具８と整合する位置で停止し、上述したコイルばねｓの一連の圧入工程が実施される。かかる圧入工程は、支持基板４に接続された拡径治具６に被嵌された全てのコイルばねｓに対して遂行される。かくして、コイルばねの所謂へたりを防止するセッチング加工が遂行される。ここで、上述した圧入工程は、拡径治具６を上述した図示しない加熱手段によって加熱した状態で実施される場合もある。また、圧入工程が完了した後に拡径治具６が加熱手段によって加熱される場合もある。さらにまた、圧入工程が完了した後に所定時間放置される場合もある。 Next, after the transport table 32 moves again in the predetermined transport direction, the three rows of the diameter-expanding jigs 6 located second from the front in the predetermined transport direction stop at the position aligned with the press-fitting tool 8, and the coil spring described above is used. A series of press-fitting steps of s are performed. The press-fitting process is performed on all the coil springs s fitted to the diameter expansion jig 6 connected to the support substrate 4. Thus, the setting process for preventing so-called fatigue of the coil spring is performed. Here, the above-described press-fitting process may be carried out in a state where the diameter-expanding jig 6 is heated by the above-mentioned not-shown heating means. Further, the diameter expanding jig 6 may be heated by the heating means after the press-fitting process is completed. Furthermore, it may be left for a predetermined time after the press-fitting process is completed.
支持基板４に配設された全てのコイルばねｓの圧入工程が完了した後、搬送テーブル３２は所定搬送方向に再び移動し、支持基板４は支持基板反転手段７４によって反転せしめられる。そして、支持基板４は上述したとおり補助台７６を介して再び搬送テーブル３２上の所定位置に配置される。これにより、支持基板４の他側１６の面が上方に露呈される。そして、搬送テーブル３２は再び所定搬送方向に移動した後に、図９−２（ａ）に示すとおり、所定搬送方向の最前端に位置する３列の拡径治具６が離脱具１０と整合する位置で停止する。このとき、離脱具１０の下端は支持基板４の他側１６の面よりも上方に位置する。 After the press-fitting process of all the coil springs s arranged on the support substrate 4 is completed, the transport table 32 moves again in the predetermined transport direction, and the support substrate 4 is reversed by the support substrate reversing means 74. Then, the support substrate 4 is again placed at a predetermined position on the transport table 32 via the auxiliary stand 76 as described above. As a result, the surface of the other side 16 of the support substrate 4 is exposed upward. Then, after the transport table 32 moves again in the predetermined transport direction, as shown in FIG. 9-2(a), the three rows of the diameter-expanding jigs 6 located at the foremost end in the predetermined transport direction align with the detachment tool 10. Stop at position. At this time, the lower end of the detachment tool 10 is located above the surface of the other side 16 of the support substrate 4.
次いで、図９−２（ｂ）に示されるとおり、離脱具１０が降下（つまり同図において実線で示される作動方向に移動）する。離脱具１０が降下すると、離脱具１０の下端つまり一対の離脱作用片６０の各々の爪部６４の下端が支持基板４の他面１６側から貫通孔１８（及び補助台７６の天板７８に形成されている図示しない貫通孔）を通過して拡径治具６の基端部２４の外周面に密着するコイルばねｓと当接し、これを下方に強制する。かくして拡径治具６からコイルばねｓが離脱される。この際、支持基板４には離脱具案内面２０が形成されていることに起因して、離脱具１０の下端は支持基板４の貫通孔１８に他面１６側から円滑に進入することができる。また、一対の離脱作用片６０の各々の爪部６４は、その全体が下方に向かって径方向内側に傾斜して延びていることに起因し、爪部６４の下端部が拡径治具６によって径方向外側に僅かに弾性変形せしめられた場合にはその復元力によって径方向内側に押し付ける力が発生する。これにより、離脱具１０はその下端がコイルばねｓを乗り越えることなく充分確実にこれを下方に強制することができる。離脱具１０が降下すると、コイルスプリング６８は支持基板４の他面１６と当接して圧縮せしめられるため、離脱具１０はコイルスプリング６８の弾性反発力に抗して降下する。 Next, as shown in FIG. 9-2(b), the detachment tool 10 descends (that is, moves in the operation direction shown by the solid line in the figure). When the detachment tool 10 descends, the lower end of the detachment tool 10, that is, the lower end of the claw portion 64 of each of the pair of detachment action pieces 60 is moved from the other surface 16 side of the support substrate 4 to the through hole 18 (and the top plate 78 of the auxiliary base 76). It passes through a formed through hole (not shown) and comes into contact with the coil spring s that is in close contact with the outer peripheral surface of the base end portion 24 of the diameter expanding jig 6 and forces it downward. Thus, the coil spring s is separated from the diameter expanding jig 6. At this time, the lower end of the detachment tool 10 can smoothly enter the through hole 18 of the support substrate 4 from the other surface 16 side because the detachment tool guide surface 20 is formed on the support substrate 4. .. Further, the claw portions 64 of each of the pair of detachment action pieces 60 are caused to extend downward as a whole and incline radially inward, so that the lower end portion of the claw portion 64 is expanded by the diameter expanding jig 6. When it is slightly elastically deformed outward in the radial direction, the restoring force causes a force to be pressed inward in the radial direction. As a result, the detachment tool 10 can surely force the lower end of the detachment tool 10 downward without getting over the coil spring s. When the detachment tool 10 descends, the coil spring 68 comes into contact with the other surface 16 of the support substrate 4 and is compressed, so that the detachment tool 10 descends against the elastic repulsive force of the coil spring 68.
その後、図９−２（ｃ）に示されるとおり、離脱具１０は上昇（つまり同図において破線で示される離脱方向に移動）して拡径治具６から離脱せしめられる。この際、図示の実施形態においては、離脱具１０の外周面にはコイルスプリング６８が装着されており、圧入具８が上昇するときと同様、離脱具１０が拡径治具６を把持して拡径治具６及び支持基板４が上昇することが防止される。 Thereafter, as shown in FIG. 9-2(c), the detachment tool 10 is lifted (that is, moved in the detachment direction indicated by the broken line in the figure) to be detached from the diameter expanding jig 6. At this time, in the illustrated embodiment, the coil spring 68 is attached to the outer peripheral surface of the detachment tool 10, and the detachment tool 10 holds the diameter expansion jig 6 in the same manner as when the press-fitting tool 8 rises. The diameter expansion jig 6 and the support substrate 4 are prevented from rising.
次いで、搬送テーブル３２が所定搬送方向に再び移動した後、所定搬送方向の前方から２番目に位置する３列の拡径治具６が離脱具１０と整合する位置で停止し、上述したコイルばねｓの一連の離脱工程が実施される。かかる離脱工程は、支持基板４に接続された拡径治具６の基端部２４の外周面に密着された全てのコイルばねｓに対して遂行される。かくして、支持基板４に接続された拡径治具６に被嵌された全てのコイルばねｓが加工装置２から離脱される。その後に、支持基板４は所定搬送方向を反対側に移動してコイルばねｓが拡径治具６に被嵌される前の状態に戻る。一方、拡径治具６から離脱したコイルばねｓはホッパーの如き図示しない適宜の収集手段によって収集される。 Next, after the transport table 32 moves again in the predetermined transport direction, the three rows of the diameter-expanding jigs 6 located second from the front in the predetermined transport direction stop at the position aligned with the detachment tool 10, and the coil spring described above is used. A series of detachment steps of s are performed. This detaching step is performed on all the coil springs s that are in close contact with the outer peripheral surface of the base end portion 24 of the diameter expanding jig 6 connected to the support substrate 4. Thus, all the coil springs s fitted to the diameter expansion jig 6 connected to the support substrate 4 are separated from the processing device 2. After that, the support substrate 4 moves to the opposite side in the predetermined conveying direction and returns to the state before the coil spring s is fitted into the diameter expanding jig 6. On the other hand, the coil spring s separated from the diameter expanding jig 6 is collected by an appropriate collecting means (not shown) such as a hopper.
本発明のコイルばねの加工装置においては、拡径治具の基端が支持基板の片側に接続され、支持基板には拡径治具の基端の外周に沿って少なくとも１個の貫通穴が形成されており、（１）圧入具が拡径治具に対してその先端から基端に向かう作動方向に移動する際に、拡径治具の先端部に被嵌されたコイルばねに当接してこれを拡径治具の基端部に移動させて拡径し、（２）離脱具が支持基板の他面側から貫通穴を通って拡径治具の基端から先端に向かう方向に移動する際に、離脱具が拡径治具の基端部に位置するコイルばねに当接してこれを拡径治具の先端部に移動させて拡径治具から離脱させる。このことから、上記（１）及び（２）を交互に繰り返すことで多数のコイルばねを連続して効率的に所要とおりの加工処理を施すことができる。 In the coil spring machining apparatus of the present invention, the base end of the diameter expanding jig is connected to one side of the supporting substrate, and the supporting substrate has at least one through hole along the outer periphery of the base end of the diameter expanding jig. (1) When the press-fitting tool moves in the operating direction from the tip to the base end with respect to the diameter-expanding jig, it comes into contact with the coil spring fitted to the tip end of the diameter-expanding jig. And move it to the base end of the diameter expansion jig to expand the diameter. (2) The detachment tool goes from the other side of the support substrate through the through hole to the direction from the base end of the diameter expansion jig to the tip. When moving, the detaching tool abuts on the coil spring located at the base end of the diameter expanding jig and moves it to the tip end of the diameter expanding jig to separate it from the diameter expanding jig. From this, by repeating the above (1) and (2) alternately, a large number of coil springs can be continuously and efficiently processed as required.
以上、添付した図面を参照して本発明に従って構成されたコイルばねの加工装置の好適実施形態について詳述したが、本発明は上記コイルばねの加工装置の形態に限定されるものではなく、本発明の範囲内において種々の変形例が考えられる。例えば、図示の実施形態においては、拡径治具は上下方向に延び、圧入具及び離脱具は共に上下方向に往復動自在であったが、これに替えて、拡径治具が左右方向に延び、圧入具及び離脱具が共に左右方向に往復動自在であってもよい。 The preferred embodiments of the coil spring machining device configured according to the present invention have been described above in detail with reference to the accompanying drawings, but the present invention is not limited to the form of the coil spring machining device. Various modifications are conceivable within the scope of the invention. For example, in the illustrated embodiment, the diameter-expanding jig extends in the vertical direction, and the press-fitting tool and the detaching tool can both reciprocate in the vertical direction. Both the press-fitting tool and the releasing tool may extend and reciprocate in the left-right direction.
また、図示の実施形態においては、圧入具の作動方向（及び離脱方向）と離脱具の作動方向（及び離脱方向）は共に同一方向であったが、これらの方向は相互に反対であってもよい。この場合には、支持基板反転手段を設ける必要はないが、支持基板を支持する板部材（例えば搬送テーブル）にも離脱具の先端が通過する所要とおりの貫通孔を形成する必要がある。 Further, in the illustrated embodiment, the operating direction (and the detaching direction) of the press-fitting tool and the operating direction (and the detaching direction) of the detaching tool are both the same direction, but these directions may be opposite to each other. Good. In this case, it is not necessary to provide the supporting substrate reversing means, but it is necessary to form a through hole in the plate member supporting the supporting substrate (for example, a transport table) as required, through which the tip of the detachment tool passes.
また、図示の実施形態において搬送レールは有端であったが、これをベルトコンベアーの如き無端状としてもよく、搬送レールを無端状とした場合には、支持基板を所定搬送方向に沿って連続的に搬送可能であって、より一層効率よくコイルばねを加工することができる。 Further, in the illustrated embodiment, the transfer rail has an end, but it may be an endless shape such as a belt conveyor. When the transfer rail is an endless shape, the support substrate is continuously provided along the predetermined transfer direction. The coil spring can be efficiently conveyed, and the coil spring can be processed more efficiently.
また、図示の実施形態においては、拡径治具は、外径が軸方向に一定の基端部を備えていたが、これは必ずしも必要はなく、拡径治具の全体が円錐台形状部であってもよい。 Further, in the illustrated embodiment, the diameter-expanding jig has a base end portion whose outer diameter is constant in the axial direction, but this is not always necessary, and the entire diameter-expanding jig has a truncated cone shape portion. May be
また、図示の実施形態においては、圧入具及び離脱具は床面に設置された搬送レールに沿って直列に配置されていたが、これに替えて、圧入具と離脱具を都度交換するようにすることで、支持基台の移動を省略することもできる。 Further, in the illustrated embodiment, the press-fitting tool and the releasing tool are arranged in series along the transportation rail installed on the floor, but instead of this, the press-fitting tool and the releasing tool may be replaced each time. By doing so, the movement of the support base can be omitted.
２：コイルばねの加工装置
４：支持基板
６：拡径治具
８：圧入具
１０：離脱具
１２：床面
１４：片面
１６：他面
１８：貫通孔
２２：円錐台形状部
３６：圧入作用片
６０：離脱作用片
ｓ：コイルばね
2: Processing device for coil spring 4: Support substrate 6: Expanding jig 8: Press-fitting tool 10: Releasing tool 12: Floor surface 14: One side 16: Other surface 18: Through hole 22: Frustum-shaped portion 36: Press-fitting action Piece 60: Separation action piece s: Coil spring
Claims (12)
該拡径治具は該基端から先端に向かって外径が漸次低減する円錐台形状部を有し、
該圧入具は、該拡径治具に対して該先端から該基端に向かう作動方向及び該基端から該先端に向かう離脱方向に往復動自在であり、該作動方向に移動される際に該拡径治具の先端部に被嵌されたコイルばねに当接してコイルばねを該拡径治具の基端部に移動させて拡径し、
該支持基板には、該拡径治具の該基端の外周に沿って少なくとも１個の貫通孔が形成されており、
該離脱具は、該支持基板の他面側から該貫通孔を通って該拡径治具の該基端から該先端に向かう作動方向及び該先端から該基端に向かう離脱方向に往復動自在であり、該作動方向に移動する際に、該拡径治具の該基端部に位置するコイルばねに当接してコイルばねを該拡径治具の先端部に移動させて該拡径治具から離脱させる、ことを特徴とするコイルばね加工装置。 A support substrate, a diameter expansion jig whose base end is connected to one surface of the support substrate, a press-fitting tool, and a releasing tool,
The diameter-expanding jig has a truncated cone-shaped portion whose outer diameter gradually decreases from the base end to the tip,
The press-fitting tool is reciprocally movable with respect to the diameter-expanding jig in an operating direction from the distal end to the proximal end and in a detaching direction from the proximal end to the distal end, and when moved in the operating direction. Abutting against the coil spring fitted to the tip end of the diameter expanding jig to move the coil spring to the base end of the diameter expanding jig to expand the diameter;
In the support substrate, at least one through hole is formed along the outer periphery of the base end of the diameter expanding jig,
The detachment tool is reciprocally movable from the other surface side of the support substrate through the through hole in an operation direction from the base end to the tip of the diameter expanding jig and in a detachment direction from the tip to the base end. When moving in the operating direction, the coil spring is brought into contact with the coil spring located at the base end of the diameter expanding jig to move the coil spring to the tip end of the diameter expanding jig. A coil spring processing device characterized by being detached from a tool.
The coil spring processing device according to claim 1, wherein a coil spring is attached to an outer peripheral surface of the detachment tool.
該支持基板には、該拡径治具の該基端の外周に沿って少なくとも１個の貫通孔が形成されており、
該拡径治具は該基端から先端に向かって外径が漸次低減する円錐台形状部を有し、
該圧入具は、該拡径治具に対して該先端から該基端に向かう作動方向及び該基端から該先端に向かう離脱方向に往復動自在であり、
該離脱具は、該拡径治具に対して該基端から該先端に向かう作動方向及び該先端から該基端に向かう離脱方向に往復動自在である装置を用いたコイルばねの加工方法であって、
該圧入具が該作動方向に移動することで、該圧入具の先端が該拡径治具の先端部に被嵌されたコイルばねに当接してコイルばねを該拡径治具の基端部に移動させて拡径させる圧入工程と、
該圧入工程の後に該離脱具が該作動方向に移動することで、該離脱具の先端が該支持基板の他面側から該貫通孔を通って該拡径治具の該基端部に位置するコイルばねに当接してコイルばねを該拡径治具の先端部に移動させて該拡径治具から離脱させる離脱工程とを含む、ことを特徴とするコイルばねの加工方法。 A support substrate, a diameter expansion jig whose base end is connected to one surface of the support substrate, a press-fitting tool, and a releasing tool,
In the support substrate, at least one through hole is formed along the outer periphery of the base end of the diameter expanding jig,
The diameter-expanding jig has a truncated cone-shaped portion whose outer diameter gradually decreases from the base end to the tip,
The press-fitting tool is reciprocally movable with respect to the diameter-expanding jig in an operating direction from the tip end to the base end and in a detaching direction from the base end to the tip end,
The detaching tool is a coil spring machining method using a device that is reciprocally movable with respect to the diameter expanding jig in an operating direction from the base end to the tip and in a detaching direction from the tip to the base end. There
When the press-fitting tool moves in the operating direction, the tip of the press-fitting tool abuts the coil spring fitted to the tip end of the diameter-expanding jig to move the coil spring to the base end part of the diameter-expanding jig. Press-fitting process to move to and expand the diameter,
After the press-fitting step, the detachment tool moves in the operating direction so that the tip of the detachment tool is positioned at the base end of the diameter-expanding jig through the through hole from the other surface side of the support substrate. And a detaching step of moving the coil spring to the tip end portion of the diameter expanding jig to separate the coil spring from the diameter expanding jig.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020003180A JP6751488B1 (en) | 2020-01-10 | 2020-01-10 | Coil spring processing device and coil spring processing method |
| CN202110017816.5A CN113102663B (en) | 2020-01-10 | 2021-01-07 | Device and method for machining coil spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020003180A JP6751488B1 (en) | 2020-01-10 | 2020-01-10 | Coil spring processing device and coil spring processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP6751488B1 true JP6751488B1 (en) | 2020-09-02 |
| JP2021109210A JP2021109210A (en) | 2021-08-02 |
Family
ID=72276777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020003180A Active JP6751488B1 (en) | 2020-01-10 | 2020-01-10 | Coil spring processing device and coil spring processing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6751488B1 (en) |
| CN (1) | CN113102663B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS476420Y1 (en) * | 1969-09-09 | 1972-03-07 | ||
| JP2597371B2 (en) * | 1987-10-26 | 1997-04-02 | 日本発条株式会社 | Ceramic coil spring forming equipment |
| JP4077375B2 (en) * | 2003-07-02 | 2008-04-16 | 株式会社パイオラックス | Manufacturing method of spring assembly |
| JP2006142316A (en) * | 2004-11-16 | 2006-06-08 | Showa Corp | Coil spring setting device |
| JP5713996B2 (en) * | 2010-03-24 | 2015-05-07 | 日本発條株式会社 | connector |
| CN201625751U (en) * | 2010-03-26 | 2010-11-10 | 孙瑛冬 | Worm-shaped spring die |
| CN202367124U (en) * | 2011-11-18 | 2012-08-08 | 邵承玉 | Arc-shaped spring forming machine |
| JP2013220447A (en) * | 2012-04-17 | 2013-10-28 | Chuo Spring Co Ltd | Method of manufacturing coil spring and coil spring |
| CN205732742U (en) * | 2016-01-14 | 2016-11-30 | 广州奥图弹簧有限公司 | Horizontal type vertical positioning machine for long spring |
| JP6669546B2 (en) * | 2016-03-22 | 2020-03-18 | 中央発條株式会社 | Setting device |
| KR101665294B1 (en) * | 2016-05-17 | 2016-10-13 | (주)대코 | Continous heating device for coil springs and heating method for coil springs by using this device |
| TWI607813B (en) * | 2016-09-08 | 2017-12-11 | 財團法人金屬工業研究發展中心 | Can be made into a one-piece spring mold structure |
-
2020
- 2020-01-10 JP JP2020003180A patent/JP6751488B1/en active Active
-
2021
- 2021-01-07 CN CN202110017816.5A patent/CN113102663B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021109210A (en) | 2021-08-02 |
| CN113102663B (en) | 2022-07-08 |
| CN113102663A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6026340B2 (en) | Assembly apparatus and control method | |
| JPH08503422A (en) | An operating device for mechanically gripping / holding and moving an article or a similar operation, particularly for an article handling machine | |
| JP5746440B2 (en) | Work apparatus and control method | |
| JP6751488B1 (en) | Coil spring processing device and coil spring processing method | |
| KR100904855B1 (en) | Apparatus for manufacturing pipe hole | |
| JP2024054386A (en) | Systems and methods for perforating flexible films and related perforation tools - Patents.com | |
| CN113401604B (en) | Multi-station synchronous feeding device | |
| JP2007153456A (en) | Insert nut feeding device | |
| JPH03133828A (en) | Spring conveying and separating device | |
| JP7476443B2 (en) | Press-fitting device | |
| JP4195161B2 (en) | Method and apparatus for disassembling and assembling tire manufacturing core | |
| JP6396265B2 (en) | Rivet driving jig | |
| JP3558689B2 (en) | Assembly jig and assembly method for divided cylindrical body | |
| JP2000158243A (en) | Part automatic press fitting device | |
| US20100154192A1 (en) | Work holding apparatus and method for setting up assembly | |
| JP2006308013A (en) | Tool for integrating sprag type one-way clutch and method for integrating sprag type one-way clutch | |
| JP6895300B2 (en) | Thrust roller bearing assembly method and assembly equipment | |
| CN211939764U (en) | Steel ball duplex position riveting set | |
| JP4158251B2 (en) | How to insert parts | |
| CN220429330U (en) | Automatic riveter | |
| CN213415338U (en) | Automatic punching nail buckle feeding equipment for automobile | |
| JPH078461B2 (en) | Positioning insertion device | |
| JP2526378Y2 (en) | Bolt supply device | |
| TWI337904B (en) | ||
| JPH0214817Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200130 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20200130 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20200401 |
|
| A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20200401 |
|
| A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20200619 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200707 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200722 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200804 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200814 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6751488 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |