JP2006055894A - Method and apparatus for forming ring body - Google Patents

Method and apparatus for forming ring body Download PDF

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Publication number
JP2006055894A
JP2006055894A JP2004241812A JP2004241812A JP2006055894A JP 2006055894 A JP2006055894 A JP 2006055894A JP 2004241812 A JP2004241812 A JP 2004241812A JP 2004241812 A JP2004241812 A JP 2004241812A JP 2006055894 A JP2006055894 A JP 2006055894A
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Prior art keywords
forming
workpiece
ring
roller
sizing
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Yoshiki Kadotani
佳樹 門谷
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Kyoei Seiko Kk
共栄精工株式会社
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Priority to JP2004241812A priority Critical patent/JP2006055894A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F5/00Gathering or removal of refuse otherwise than by receptacles or vehicles
    • B65F5/005Gathering or removal of refuse otherwise than by receptacles or vehicles by pneumatic means, e.g. by suction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00Refuse receptacles; Accessories therefor
    • B65F1/14Other constructional features; Accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00Refuse receptacles; Accessories therefor
    • B65F1/14Other constructional features; Accessories
    • B65F1/16Lids or covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F1/00Refuse receptacles; Accessories therefor
    • B65F1/14Other constructional features; Accessories
    • B65F1/16Lids or covers
    • B65F1/1623Lids or covers with means for assisting the opening or closing thereof, e.g. springs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F2210/00Equipment of refuse receptacles
    • B65F2210/108Authorization means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F2210/00Equipment of refuse receptacles
    • B65F2210/138Identification means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65FGATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F2210/00Equipment of refuse receptacles
    • B65F2210/139Illuminating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/40Feeding or discharging devices
    • B65G53/46Gates or sluices, e.g. rotary wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for forming a ring body with which the burn-seizure of a work can be prevented without bringing about the increase of number of parts and the complication of a structure by forming a resistance-reducing layer for reducing a friction resistance at the time of coming in contact with the work at a portion faced to a side edge surface of the work in a sliding contact part of a support-roller. <P>SOLUTION: The apparatus for forming the ring body is constituted so that the work W is formed by pivotally supporting three-rotating elements 3, 5, 7 of: a forming roller 3 having a ring body forming part 3a formed on the peripheral surface; a mandrel 5 which faces the forming roller 3 to be nearer to and away from the roller 3 and has a ring body forming part 5a formed on the intermediate part peripheral surface and regulating parts 5b formed on both side peripheral surfaces; and a support roller 7 which is oppositely arranged to the rear side of the mandrel 5 and has slidable contact parts 7b in contact with the control parts 5b of the mandrel 5, wherein the resistance-reducing layer 11 for reducing the friction resistance at the time of coming in contact with the work is formed at the portions faced to the side edge surfaces in the axial direction of the work W in the sliding-contact part 7b of the support roller 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、テーパベアリングの内輪(インナレース)、外輪(アウタレース)やその他の輪体を所定形状に冷間圧延加工して成形するような輪体成形方法およびその装置に関する。   The present invention relates to a ring body forming method and apparatus for cold rolling an inner ring (inner race), an outer ring (outer race) and other ring bodies of a taper bearing into a predetermined shape.

従来、上述例の輪体成形装置としては図8に示す構造の装置がある。
すなわち、周面に輪体成形部91aを形成した成形ローラ91と、この成形ローラ91に接離可能に対向され、中間部周面に輪体成形部92aが、両側周面に規制部92b,92bがそれぞれ形成されたマンドレル92と、このマンドレル92の背面側に対設され、マンドレル92の規制部92b,92bと対接する一対の摺接部93b,93bが形成されたサポートローラ93との3つの回転要素91,92,93を回転可能に軸支してワークWを成形するように構成したものである。
Conventionally, there is an apparatus having a structure shown in FIG.
That is, the forming roller 91 having a ring body forming portion 91a formed on the peripheral surface thereof is opposed to the forming roller 91 so as to be able to come into contact with and separated from the forming roller 91, the ring body forming portion 92a is formed on the peripheral surface of the intermediate portion, and the restricting portions 92b 3 of a mandrel 92 formed with 92b and a support roller 93 provided on the back side of the mandrel 92 and formed with a pair of sliding contact portions 93b, 93b that contact the regulating portions 92b, 92b of the mandrel 92. One rotating element 91, 92, 93 is rotatably supported to form the workpiece W.

図8に示す従来の輪体成形装置においてテーパロールベアリングの外輪または内輪のようなワーク軸芯線に対して非平行な内周面または外周面を有するワークW(図8では外輪を示す)を成形する場合、ワークWには成形ローラ91の成形押圧力の分力が作用するので、該ワークWは図8の矢印方向に振れ、サポートローラ93の摺接部93bの内側面(一対の摺接部93b,93bの対向面)にワークWが接触して、摩擦による焼付きが生ずる問題点があった。   In the conventional ring body forming apparatus shown in FIG. 8, a work W (in FIG. 8, the outer ring is shown) having an inner peripheral surface or an outer peripheral surface that is non-parallel to the workpiece axis, such as an outer ring or an inner ring of a taper roll bearing. In this case, since the component force of the forming pressing force of the forming roller 91 acts on the work W, the work W swings in the direction of the arrow in FIG. 8 and the inner side surface of the sliding contact portion 93b of the support roller 93 (a pair of sliding contacts). There is a problem that the workpiece W comes into contact with the opposing surfaces of the portions 93b and 93b and seizure occurs due to friction.

このような問題点を解決するために本出願人は特許文献1に記載の装置を既に発明した。
つまり、上述のサポートローラの摺接部においてワークの軸方向の側端面と対向する部分に、該摺接部に対して回転自在な回転体を設け、ワークがこの回転体に摺接した時、回転体をワークと同方向に回転して、摩擦による焼付きを防止するように構成した輪体成形装置である。
In order to solve such problems, the present applicant has already invented the device described in Patent Document 1.
That is, in the sliding contact portion of the support roller described above, a rotating body that is rotatable with respect to the sliding contact portion is provided at a portion facing the side end surface in the axial direction of the workpiece, and when the workpiece is in sliding contact with the rotating body, This is a ring body forming apparatus configured to rotate the rotating body in the same direction as the workpiece to prevent seizure due to friction.

しかし、上述の回転体をサポートローラの摺接部に回転自在に取付けるには、サポートローラのハブ部にクロスローラベアリング等の軸受ベアリングを介して回転体を取付ける必要があることは勿論、回転体にはローラ軸と、このローラ軸を位置決め固定するボルト等の位置決め部材と、ローラ軸に対して回転自在なローラとの組合せ構造を複数組設ける必要があり、加工工数、組付け工数が大となり、また部品点数が多くなって、構造が複雑化する問題点があった。
特開2004−181523号公報
However, in order to rotatably attach the rotating body to the sliding contact portion of the support roller, it is necessary to attach the rotating body to the hub portion of the support roller via a bearing such as a cross roller bearing. It is necessary to provide multiple sets of a combination of a roller shaft, a positioning member such as a bolt for positioning and fixing the roller shaft, and a roller that is rotatable with respect to the roller shaft. This increases the number of processing steps and assembly steps. Also, there is a problem that the number of parts increases and the structure becomes complicated.
JP 2004-181523 A

この発明は、サポートローラの摺接部においてワークの軸方向の側端面と対向する部分に、ワーク接触時の摩擦抵抗を低減する抵抗低減層を設けることにより、部品点数の増加、構造の複雑化を招くことなく、ワークの焼付きを防止することができる輪体成形装置の提供を目的とする。   This invention increases the number of parts and complicates the structure by providing a resistance-reducing layer that reduces the frictional resistance at the time of workpiece contact at a portion facing the side end surface in the axial direction of the workpiece at the sliding contact portion of the support roller. An object of the present invention is to provide a ring body forming apparatus capable of preventing the seizure of a workpiece without incurring the damage.

この発明はまた、サポートローラのワークの軸方向の側端面と対向する部分に抵抗低減層が設けられた輪体成形装置を用いてワークを成形した後に、成形後のワークをサイジングすることにより、成形時のワークの焼付き防止を図ると共に、サイジングによりワークの寸法精度向上を図ることができる輪体成形方法の提供を目的とする。   This invention also forms a work using a ring body forming device in which a resistance reduction layer is provided in a portion facing the side end surface in the axial direction of the work of the support roller, and then sizing the work after forming, An object of the present invention is to provide a ring body forming method capable of preventing seizure of a workpiece during molding and improving the dimensional accuracy of the workpiece by sizing.

この発明による輪体成形装置は、周面に輪体成形部を形成した成形ローラと、上記成形ローラに接離可能に対向され、中間部周面に輪体成形部が、両側周面に規制部が形成されたマンドレルと、上記マンドレルの背面側に対設され、マンドレルの規制部と対接する摺接部が形成されたサポートローラとの3つの回転要素を回転可能に軸支してワークを成形する輪体成形装置であって、上記サポートローラの摺接部においてワークの軸方向の側端面と対向する部分には、ワーク接触時の摩擦抵抗を低減する抵抗低減層が設けられたものである。   The ring body forming apparatus according to the present invention has a forming roller having a ring body forming portion formed on a peripheral surface thereof, and is opposed to the forming roller so as to be able to come into contact with and separate from the forming roller. A rotating mandrel is rotatably supported by three rotating elements: a mandrel formed with a portion, and a support roller that is provided on the back side of the mandrel and has a sliding contact portion that is in contact with the regulating portion of the mandrel. A ring forming apparatus for forming, wherein a resistance reduction layer for reducing frictional resistance at the time of workpiece contact is provided at a portion facing the side end surface in the axial direction of the workpiece in the sliding contact portion of the support roller. is there.

上記構成によれば、ワークの成形時にワークが振れて、このワークがサポートローラの摺接部に設けられた抵抗低減層に接触しても、該抵抗低減層により摩擦抵抗が低下されるので、ワークの焼付きを防止することができ、しかも、サポートローラの摺接部に抵抗低減層を設ける構成であるから、回転体を回転自在に取付ける構造と異なり、部品点数の増加、構造の複雑化を招くことはなく、ワークの焼付きを防止することができる。   According to the above configuration, even when the workpiece is shaken during the molding of the workpiece and the workpiece comes into contact with the resistance reduction layer provided in the sliding contact portion of the support roller, the friction resistance is reduced by the resistance reduction layer. Workpiece seizure can be prevented, and a resistance reduction layer is provided on the sliding contact part of the support roller. Unlike the structure in which the rotating body is rotatably mounted, the number of parts is increased and the structure is complicated. It is possible to prevent the work from being seized.

この発明の一実施態様においては、上記抵抗低減層は、材料の溶射層、コーティング層、固着層のうち少なくとも1つに設定されたものである。
上述の溶射層を形成する溶射材料としては金属、合金(特に超硬合金)、サーメット(セラミックスと金属の複合材料)、セラミックスの中から摩擦抵抗を低減する単一または複数の材料(例えばTi)を選定して用いることができ、コーティング層としてはTiC(炭化チタン)やTiN(窒化チタン)またはAlなどの硬度、剛性、耐熱性、靭性に優れるセラミックスを単層または複数層にコーティングして形成してもよく、固着層としては予め形成された超硬合金の層、TiCの層、TaC(炭化タンタル)の層、TiNの層、TiC系サーメットの層、TiN系サーメットの層を固着、接着または取付けて構成してもよい。
In one embodiment of the present invention, the resistance-reducing layer is set to at least one of a sprayed material layer, a coating layer, and a fixing layer.
As the thermal spray material for forming the above-mentioned thermal spray layer, a single material or a plurality of materials (for example, Ti) that reduce frictional resistance among metals, alloys (particularly cemented carbide), cermets (ceramic and metal composite materials), and ceramics. The coating layer is coated with single layer or multiple layers of ceramics with excellent hardness, rigidity, heat resistance and toughness such as TiC (titanium carbide), TiN (titanium nitride) or Al 2 O 3 The fixed layer may be a cemented carbide layer, a TiC layer, a TaC (tantalum carbide) layer, a TiN layer, a TiC cermet layer, or a TiN cermet layer. You may comprise by adhering, adhere | attaching, or attaching.

上記構成によれば、溶射層、コーティング層または固着層を用いて上述の抵抗低減層を構成することができる。   According to the said structure, the above-mentioned resistance reduction layer can be comprised using a thermal spray layer, a coating layer, or a fixed layer.

この発明の輪体成形方法は、成形ローラと、該成形ローラに接離可能に対向されるマンドレル、マンドレルの背面側に対接されるサポートローラとを備え、該サポートローラのワーク軸方向の側端面と対向する部分に抵抗低減層が設けられた輪体成形装置を用いてワークを成形する成形工程と、成形後のワークをサイジング装置を用いてサイジングするサイジング工程とを備えたものである。   A ring body forming method of the present invention includes a forming roller, a mandrel opposed to the forming roller so as to be able to contact and separate, and a support roller facing the back side of the mandrel, and the side of the support roller in the work axis direction It comprises a molding process for molding a workpiece using a ring-shaped molding apparatus provided with a resistance reduction layer at a portion facing the end face, and a sizing process for sizing the molded workpiece using a sizing device.

上記構成によれば、成形工程においてワークを冷間圧延加工する時、このワークが振れて、該ワークがサポートローラの摺接部に設けられた抵抗低減層に接触しても、該抵抗低減層により摩擦抵抗が低下されるので、ワークの焼付きを防止することができ、成形後のワークはサイジング工程においてサイジング装置を用いてサイジングされるので、ワークの寸法精度の向上を図ることができる。つまり、成形時のワークの焼付き防止と、ワークの寸法精度向上との両立を図ることができる。   According to the above configuration, when the work is cold-rolled in the forming process, even if the work is shaken and the work comes into contact with the resistance reducing layer provided in the sliding contact portion of the support roller, the resistance reducing layer Since the frictional resistance is reduced by this, seizure of the workpiece can be prevented, and the workpiece after molding is sized using a sizing device in the sizing step, so that the dimensional accuracy of the workpiece can be improved. That is, it is possible to achieve both the prevention of seizure of the workpiece during molding and the improvement of the dimensional accuracy of the workpiece.

この発明の一実施態様においては、上記ワークはテーパベアリングの内輪に設定され、上記サイジング工程において、成形後のワークを、小径孔と大径孔とを備えたサイジングケース内にその大径孔側から押圧挿入し、サイジング後のワークを小径孔側から挿入される押出し部材にて押出すものである。   In one embodiment of the present invention, the workpiece is set as an inner ring of a taper bearing, and in the sizing step, the molded workpiece is placed in a sizing case having a small diameter hole and a large diameter hole. The workpiece after sizing is pushed out by a pushing member inserted from the small-diameter hole side.

上記構成によれば、テーパベアリングの内輪はその外周部の異径段部を有するが、このように外周部構造に段部を備えたテーパベアリングの内輪であっても、上述のサイジングケースの小径孔と大径孔とによって確実にサイジングを行なうことができ、内輪の寸法精度向上を図ることができる。   According to the above configuration, the inner ring of the taper bearing has a stepped portion having a different diameter on the outer peripheral portion. Even in the case of the inner ring of the taper bearing having the stepped portion in the outer peripheral portion structure, the small diameter of the sizing case described above is used. Sizing can be reliably performed by the hole and the large-diameter hole, and the dimensional accuracy of the inner ring can be improved.

この発明によれば、サポートローラの摺接部においてワークの軸方向の側端面と対向する部分に、ワーク接触時の摩擦抵抗を低減する抵抗低減層を設けたので、部品点数の増加、構造の複雑化を招くことなく、ワークの焼付きを防止することができる効果がある。     According to the present invention, since the resistance reduction layer for reducing the frictional resistance at the time of workpiece contact is provided in the portion facing the side end surface in the axial direction of the workpiece in the sliding contact portion of the support roller, the number of parts is increased and the structure is increased. There is an effect that the seizure of the workpiece can be prevented without causing complication.

部品点数の増加、構造の複雑化を招くことなく、ワークの焼付きを防止するという目的を、サポートローラの摺接部においてワークの軸方向の側端面と対向する部分に、ワーク接触時の摩擦抵抗を低減する抵抗低減層を設けるという構成にて実現した。   The friction at the time of workpiece contact with the part facing the side end surface in the axial direction of the workpiece in the sliding portion of the support roller is aimed at preventing workpiece seizure without increasing the number of parts and complicating the structure. This is realized by providing a resistance reducing layer for reducing resistance.

この発明の一実施例を以下図面に基づいて詳述する。
図面は輪体成形方法およびその装置を示すが、まず、図1、図2を参照して輪体成形装置の構成について説明する。
An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawings show the ring body forming method and the apparatus thereof. First, the structure of the ring body forming apparatus will be described with reference to FIGS.

図1、図2において、この輪体成形装置は、軸受1,1を介して成形ローラ軸2を軸支し、この成形ローラ軸2には、その中央周面に輪体成形部3aが形成された成形ローラ3が一体または一体的に形成されている。この成形ローラ3にはモータ4が連動され、このモータ4で成形ローラ3を所定方向(図2の矢印e方向)に回転駆動すべく構成している。   In FIG. 1 and FIG. 2, this ring body forming apparatus supports a forming roller shaft 2 via bearings 1 and 1, and this forming roller shaft 2 has a ring body forming portion 3a formed on the central peripheral surface thereof. The formed molding roller 3 is integrally or integrally formed. A motor 4 is linked to the forming roller 3, and the motor 4 is configured to rotate the forming roller 3 in a predetermined direction (the direction of arrow e in FIG. 2).

上述の成形ローラ3に対して接離可能に対向されるマンドレル5を設け、このマンドレル5の中央部周面には輪体成形部5aが、両側周面には規制部5b,5bがそれぞれ一体形成され、このマンドレル5の両端部は軸受6,6で軸支されている。このマンドレル5は次に述べるサポートローラ7で図2の矢印g方向に間接駆動される。   A mandrel 5 is provided to be opposed to the above-described forming roller 3 so as to be able to come into contact with and separate from, and a ring body forming portion 5a is formed on the peripheral surface of the central portion of the mandrel 5, and restricting portions 5b and 5b are integrated on both peripheral surfaces. The both ends of the mandrel 5 are pivotally supported by bearings 6 and 6. The mandrel 5 is indirectly driven in the direction of arrow g in FIG.

上述のマンドレル5は図1に示すようにマンドレル移動装置(図示せず)により、成形押圧方向(矢印a方向)と直交する方向(矢印c参照)に出し入れ可能に構成されている。   As shown in FIG. 1, the above-described mandrel 5 is configured to be able to be taken in and out in a direction (see arrow c) perpendicular to the molding pressing direction (arrow a direction) by a mandrel moving device (not shown).

また図1、図2に示すように、上述のマンドレル5の背面側に対設され、マンドレル5の規制部5b,5bと対接する一対の摺接部7b,7bを備えたサポートローラ7(いわゆる受けローラ)を設け、このサポートローラ7のローラ軸8,8を軸受9,9で軸支すると共に、該ローラ軸8を上述ののモータ4とは別体のモータ10で所定方向(図2の矢印f方向)に回転駆動すべく構成している。   As shown in FIGS. 1 and 2, a support roller 7 (a so-called so-called support roller 7 provided with a pair of sliding contact portions 7b, 7b facing the regulating portions 5b, 5b of the mandrel 5 is provided on the back side of the mandrel 5 described above. (Supporting roller), and the roller shafts 8 and 8 of the support roller 7 are supported by bearings 9 and 9, and the roller shaft 8 is supported by a motor 10 separate from the motor 4 described above in a predetermined direction (FIG. In the direction of arrow f).

図1、図2に示すように、この輪体成形装置は成形ローラ3と、マンドレル5と、サポートローラ7との3つの回転要素を回転可能(図2の矢印e,g,f方向参照)に軸支してワークWを成形するものである。   As shown in FIG. 1 and FIG. 2, this ring body forming apparatus can rotate three rotating elements of a forming roller 3, a mandrel 5, and a support roller 7 (see directions of arrows e, g, and f in FIG. 2). The workpiece W is formed by pivotally supporting the workpiece.

ここで、上述の成形ローラ3は図示しない周知構造の可動フレームに支持されて、図1に矢印aで示す成形押圧方向および矢印bで示す後退方向に直線的に往復駆動(望ましくはNC制御により駆動)され、サポートローラ7は図示しない固定フレームに支持されているが、この構成に代えて、サポートローラ7側を可動フレームに、成形ローラ3側を固定フレームに支持する構造を採用してもよい。   Here, the above-described forming roller 3 is supported by a movable frame having a well-known structure (not shown), and linearly reciprocates in the pressing direction indicated by arrow a and the backward direction indicated by arrow b in FIG. 1 (preferably by NC control). The support roller 7 is supported by a fixed frame (not shown), but instead of this configuration, a structure may be adopted in which the support roller 7 side is supported by a movable frame and the molding roller 3 side is supported by a fixed frame. Good.

ところで、上述のサポートローラ7の一対の摺接部7b,7bにおいてワークWの軸方向の側端面と対向する部分、つまり、一対の摺接部7b,7bの対向面部には、ワークWの接触時における摩擦抵抗を低減する抵抗低減層11,11(いわゆる焼付き防止層)がそれぞれ設けられている。   By the way, the portion of the pair of sliding contact portions 7b and 7b of the support roller 7 that is opposed to the side end surface in the axial direction of the workpiece W, that is, the opposing surface portion of the pair of sliding contact portions 7b and 7b is in contact with the workpiece W. Resistance reduction layers 11 and 11 (so-called seizure prevention layers) for reducing frictional resistance at the time are provided.

この抵抗低減層11は、溶射材料による溶射層、コーティング材料によるコーティング層、予め形成された抵抗低減被膜の固着(溶着、接着、取付けを含む)による固着層のうち少なくとも1つに設定される。   The resistance reduction layer 11 is set to at least one of a sprayed layer made of a sprayed material, a coating layer made of a coating material, and a fixed layer formed by fixing (including welding, adhesion, and attachment) of a previously formed resistance reducing film.

上述の溶射層により抵抗低減層11を構成する場合には、金属,合金(特に超硬合金),セラミックス,サーメット(セラミックスと金属の複合材料)の中から摩擦抵抗を低減する単一または複数の溶射材料を選定して用いることができるが、Ti(チタン),TiC(炭化チタン),TiN(窒化チタン),TaC(炭化タンタル),TiC系サーメット,TiN系サーメットが望ましい。   In the case where the resistance reduction layer 11 is constituted by the above-mentioned sprayed layer, a single or a plurality of frictional resistances can be reduced from metal, alloy (particularly cemented carbide), ceramics, and cermet (composite material of ceramics and metal). Although a thermal spray material can be selected and used, Ti (titanium), TiC (titanium carbide), TiN (titanium nitride), TaC (tantalum carbide), TiC-based cermet, and TiN-based cermet are preferable.

上述のコーティング層により抵抗低減層11を構成する場合には、超硬合金または、TiC,TiNなどのチタン化合物やチタン合金、または硬度、剛性、耐熱性、靱性に優れるAlなどのセラミックスを単層または複数層にコーティングすることができる。 When the resistance reduction layer 11 is constituted by the coating layer described above, a cemented carbide, a titanium compound such as TiC or TiN or a titanium alloy, or a ceramic such as Al 2 O 3 having excellent hardness, rigidity, heat resistance, and toughness. Can be coated in a single layer or multiple layers.

上述の固着層により抵抗低減層11を構成する場合には、予め形成されたチタンを主成分とする層(例えばTiCの層,TiC系サーメットの層,チタン合金の層)や、TaCの層,TiNの層,TiN系サーメットの層,超硬合金の層(いわゆる皮膜)を摺接部7b,7bの対向面部に固着(溶着、接着、取付けを含む)して構成する。
また、抵抗低減層11を設ける前処理として、必要に応じて、摺接部7b,7bの対向面部を粗面化して、抵抗低減層11の密着強さを向上させてもよく、TiまたはTiCの層の表面にAlなどのセラミックスをコーティングして抵抗低減層11を構成してもよい。
When the resistance reduction layer 11 is constituted by the above-described fixed layer, a layer mainly formed of titanium (for example, a TiC layer, a TiC cermet layer, a titanium alloy layer), a TaC layer, A TiN layer, a TiN-based cermet layer, and a cemented carbide layer (so-called film) are fixed (including welding, adhesion, and attachment) to the opposing surface portions of the sliding contact portions 7b and 7b.
Further, as a pretreatment for providing the resistance reduction layer 11, if necessary, the opposing surface portions of the sliding contact portions 7b, 7b may be roughened to improve the adhesion strength of the resistance reduction layer 11, and Ti or TiC The resistance reduction layer 11 may be configured by coating the surface of this layer with ceramics such as Al 2 O 3 .

なお、上述の抵抗低減層11としてTiC(炭化チタン)を用いた場合(例えば摺接部7bの対向面にTiCコーティング処理を施した場合)には、ワークWの焼付きを防止しつつ数10万個のワークW成形が可能となる。
また上述の抵抗低減層11はサポートローラ7の摺接部7bにおける対向面の全面またはワークWと接触する対向面の径方向外方領域に設けられる。
In addition, when TiC (titanium carbide) is used as the above-described resistance reduction layer 11 (for example, when TiC coating treatment is performed on the opposing surface of the sliding contact portion 7b), the work W is prevented from being seized. Ten thousand workpieces W can be formed.
Further, the above-described resistance reduction layer 11 is provided on the entire facing surface of the sliding contact portion 7 b of the support roller 7 or on the radially outer region of the facing surface that contacts the workpiece W.

図3、図4、図5は成形後のワークWをサイジングするサイジング装置を示すが、図1〜図5の実施例においてはワークWとしてテーパベアリングの内輪(インナレース)を例示しているので、このサイジング装置は該内輪のサイジングに対応した構成を有する。   3, 4, and 5 show a sizing device for sizing the workpiece W after molding. In the embodiment of FIGS. 1 to 5, an inner ring (inner race) of a tapered bearing is illustrated as the workpiece W. The sizing device has a configuration corresponding to the sizing of the inner ring.

すなわち、サイジングケース12は小径孔12aと、大径孔12b(いずれもサイジング孔)と、これら両者12a,12b間に位置し、かつワークW(インナレース参照)の外周テーパ部に対応したテーパ孔12c(図5参照)とを備える一方、サイジングケース12の一側にはワークWをその大径孔12b側から各孔に押圧挿入する押圧挿入部材13をもった油圧シリンダ14を配設し、サイジングケース12の他側にはサイジング後のワークWを、小径孔12a側から大径孔12b側へ押出す押出し部材15をもった油圧シリンダ16を配設して、テーパベアリングの内輪(ワークW参照)に対応するサイジング装置を構成したものである。   That is, the sizing case 12 has a small-diameter hole 12a, a large-diameter hole 12b (both are sizing holes), and a tapered hole that is located between both the holes 12a and 12b and corresponds to the outer peripheral taper portion of the workpiece W (see inner race). 12c (see FIG. 5), on one side of the sizing case 12, a hydraulic cylinder 14 having a pressure insertion member 13 for pressing and inserting the workpiece W into each hole from the large diameter hole 12b side is disposed. On the other side of the sizing case 12, a hydraulic cylinder 16 having an extruding member 15 that pushes the sized workpiece W from the small diameter hole 12a side to the large diameter hole 12b side is disposed. The sizing device corresponding to the reference) is configured.

なお、上述のサイジングケース12は例えば冷間金型用合金工具鋼(具体的にはSKD11)にて構成され、ワークWは例えば高炭素クロム軸受鋼鋼材(具体的にはSUJ2)にて構成されるが、この材質に限定されるものではない。   The above-described sizing case 12 is made of, for example, an alloy tool steel for cold mold (specifically SKD11), and the workpiece W is made of, for example, a high-carbon chromium bearing steel (specifically SUJ2). However, it is not limited to this material.

次に、輪体成形方法について説明する。
ワークWは図1に示すように成形ローラ3の輪体成形部3aと、マンドレル5の輪体成形部5aとの間で、冷間圧延加工されるが、テーパベアリングの内輪用のワークWはその軸芯線に対して非平行な外周面をもっているので、圧延加工時に成形ローラ3の成形押圧力の分力が作用して、該ワークWは図1の矢印d方向に振れる。
Next, the ring body forming method will be described.
As shown in FIG. 1, the work W is cold-rolled between the ring body forming portion 3a of the forming roller 3 and the ring body forming portion 5a of the mandrel 5, but the work W for the inner ring of the taper bearing is Since the outer peripheral surface is not parallel to the axis, the component force of the forming pressing force of the forming roller 3 acts during the rolling process, and the workpiece W swings in the direction of arrow d in FIG.

この振れに起因して、ワークWの軸方向側端面がサポートローラ7の摺接部7bに設けられた抵抗低減層11に接触しても、該抵抗低減層11により両者11,W間の摩擦抵抗が低下されるので、ワークWの振れが抑制されると共に、ワークWの焼付きを防止することができ、円滑な輪体成形を行なうことができる。   Even if the axial end surface of the workpiece W comes into contact with the resistance reduction layer 11 provided on the sliding contact portion 7b of the support roller 7 due to this deflection, the resistance reduction layer 11 causes friction between the both 11 and W. Since the resistance is reduced, the workpiece W can be prevented from being shaken, and the workpiece W can be prevented from being seized, so that a smooth ring body can be formed.

成形後のワークWはマンドレル5から取外された後に、サイジング装置にて、サイジングされるが、まず、図3に示すように、このワークWは油圧シリンダ14で駆動される押圧挿入部材13によりサイジングケース12の大径孔12b側から各孔内に挿入され、サークWの小径外周部はサイジングケース12の小径孔12aにてサイジングされ、ワークWの大径外周部はサイジングケース12の大径孔12bにてサイジングされる。
またテーパベアリングの内輪用のワークWにはその小径外周部と大径外周部との間にテーパ部が存在するが、サイジングケース12にはテーパ孔12cが形成されているので、ワークW側のテーパ部がサイジングケース12と干渉することはない。
The molded workpiece W is removed from the mandrel 5 and then sized by a sizing device. First, as shown in FIG. 3, the workpiece W is pressed by a pressing insertion member 13 driven by a hydraulic cylinder 14. The sizing case 12 is inserted into each hole from the large-diameter hole 12b side, the small-diameter outer periphery of the sir W is sized by the small-diameter hole 12a of the sizing case 12, and the large-diameter outer periphery of the workpiece W is the large diameter of the sizing case 12. Sizing is performed at the hole 12b.
Further, the work W for the inner ring of the taper bearing has a taper portion between the outer periphery of the small diameter and the outer periphery of the large diameter, but since the sizing case 12 is formed with a taper hole 12c, The tapered portion does not interfere with the sizing case 12.

サイジング後のワークWは図4に示すように、サイジングケース12内にその小径孔12a側から挿入される押出し部材15により同ケース12の大径孔12b側へ押し出される。   As shown in FIG. 4, the sized workpiece W is pushed out to the large diameter hole 12 b side of the case 12 by the pushing member 15 inserted into the sizing case 12 from the small diameter hole 12 a side.

このように上記実施例の輪体成形装置(図1、図2参照)は、周面に輪体成形部3aを形成した成形ローラ3と、上記成形ローラ3に接離可能に対向され、中間部周面に輪体成形部5aが、両側周面に規制部5bが形成されたマンドレル5と、上記マンドレル5の背面側に対設され、マンドレル5の規制部5bと対接する摺接部7bが形成されたサポートローラ7との3つの回転要素3,5,7を回転可能に軸支してワークWを成形する輪体成形装置であって、上記サポートローラ7の摺接部7bにおいてワークWの軸方向の側端面と対向する部分には、ワーク接触時の摩擦抵抗を低減する抵抗低減層11が設けられたものである。   As described above, the ring body forming apparatus of the above embodiment (see FIGS. 1 and 2) is opposed to the forming roller 3 having the ring body forming portion 3a formed on the peripheral surface thereof and capable of coming into contact with and separated from the forming roller 3, and is intermediate. A mandrel 5 in which a ring body forming part 5a is formed on the peripheral surface of the part, and a restricting part 5b is formed on the peripheral surface of both sides, and a slidable contact part 7b in contact with the restricting part 5b of the mandrel 5 provided on the back side of the mandrel 5. Is a ring body forming apparatus for forming a workpiece W by pivotally supporting three rotary elements 3, 5, and 7 with a support roller 7 formed with a workpiece at a sliding contact portion 7b of the support roller 7. A resistance reducing layer 11 for reducing the frictional resistance when contacting the workpiece is provided in a portion facing the side end surface in the axial direction of W.

この構成によれば、ワークWの成形時にワークWが振れて、このワークWがサポートローラ7の摺接部7bに設けられた抵抗低減層11に接触しても、該抵抗低減層11により摩擦抵抗が低下されるので、ワークWの焼付きを防止することができ、しかも、サポートローラ7の摺接部7bに抵抗低減層11を設ける構成であるから、従来構造のように回転体を回転自在に取付ける構造とは異なり、部品点数の増加、構造の複雑化を招くことなく、ワークWの焼付きを防止することができる。   According to this configuration, even when the workpiece W is shaken during the molding of the workpiece W and the workpiece W comes into contact with the resistance reduction layer 11 provided on the sliding contact portion 7 b of the support roller 7, the resistance reduction layer 11 causes friction. Since the resistance is lowered, seizure of the workpiece W can be prevented, and the resistance reducing layer 11 is provided on the sliding contact portion 7b of the support roller 7, so that the rotating body rotates as in the conventional structure. Unlike a structure that can be freely mounted, it is possible to prevent the workpiece W from being seized without increasing the number of parts and complicating the structure.

また、上記抵抗低減層11は、材料の溶射層、コーティング層、固着層のうち少なくとも1つに設定されたものである。
この構成によれば、溶射層、コーティング層または固着層を用いて上述の抵抗低減層11を構成することができる。
The resistance reduction layer 11 is set to at least one of a sprayed material layer, a coating layer, and a fixed layer.
According to this configuration, the above-described resistance reduction layer 11 can be configured using a sprayed layer, a coating layer, or a fixed layer.

一方、上記実施例の輪体成形方法(図1〜図5参照)は、成形ローラ3と、該成形ローラ3に接離可能に対向されるマンドレル5と、マンドレル5の背面側に対設されるサポートローラ7とを備え、該サポートローラ7のワークWの軸方向の側端面と対向する部分に抵抗低減層11が設けられた輪体成形装置を用いてワークWを成形する成形工程(図1、図2参照)と、成形後のワークWをサイジング装置(特にサイジングケース12参照)を用いてサイジングするサイジング工程(図3〜図5参照)とを備えたものである。   On the other hand, the ring body forming method of the above embodiment (see FIGS. 1 to 5) is provided opposite to the forming roller 3, the mandrel 5 facing the forming roller 3 so as to be able to contact and separate, and the back side of the mandrel 5. A forming process for forming the work W using a ring body forming apparatus provided with a resistance reduction layer 11 on a portion of the support roller 7 facing the side end surface in the axial direction of the work W (see FIG. 1 and FIG. 2) and a sizing process (see FIGS. 3 to 5) for sizing the molded workpiece W using a sizing device (particularly, sizing case 12).

この構成によれば、成形工程においてワークWを冷間圧延加工する時、このワークWが図1の矢印d方向に振れて、該ワークWがサポートローラ7の摺接部7bに設けられた抵抗低減層11に接触しても、該抵抗低減層11により摩擦抵抗が低下されるので、ワークWの焼付きを防止することができ、成形後のワークWはサイジング工程においてサイジング装置を用いてサイジングされるので、ワークWの寸法精度の向上を図ることができる。
つまり、成形時のワークWの焼付き防止と、ワークWの寸法精度向上との両立を図ることができる。
According to this configuration, when the workpiece W is cold-rolled in the forming step, the workpiece W is swung in the direction of the arrow d in FIG. 1, and the workpiece W is provided on the sliding contact portion 7 b of the support roller 7. Even if it comes into contact with the reduction layer 11, the frictional resistance is lowered by the resistance reduction layer 11, so that seizure of the workpiece W can be prevented, and the molded workpiece W is sized using a sizing device in the sizing step. Therefore, the dimensional accuracy of the workpiece W can be improved.
That is, it is possible to achieve both prevention of seizure of the workpiece W during molding and improvement of the dimensional accuracy of the workpiece W.

しかも、上記ワークWはテーパベアリングの内輪(いわゆるインナレース)に設定され、上記サイジング工程において、成形後のワークWを、小径孔12aと大径孔12bとを備えたサイジングケース12内に、その大径孔12b側から押圧挿入し、サイジング後のワークWを小径孔12a側から挿入される押出し部材15にて押出すものである。   Moreover, the workpiece W is set to an inner ring (so-called inner race) of a tapered bearing, and in the sizing step, the molded workpiece W is placed in a sizing case 12 having a small diameter hole 12a and a large diameter hole 12b. The workpiece W is pressed and inserted from the large-diameter hole 12b side, and the sizing workpiece W is pushed out by the pushing member 15 inserted from the small-diameter hole 12a side.

この構成によれば、テーパベアリングの内輪(ワークW参照)はその外周部に異径段部を有するが、このように外周部構造に段部を備えたテーパベアリングの内輪であっても、上述のサイジングケース12の小径孔12aと大径孔12bとによって確実にサイジングを行うことができ、テーパベアリングの内輪(ワークW参照)の寸法精度向上を図ることができる。   According to this configuration, the inner ring of the taper bearing (see the workpiece W) has a stepped portion having a different diameter on the outer peripheral portion thereof, but even the inner ring of the taper bearing having the stepped portion on the outer peripheral structure as described above. Sizing can be reliably performed by the small-diameter hole 12a and the large-diameter hole 12b of the sizing case 12, and the dimensional accuracy of the inner ring (see the workpiece W) of the tapered bearing can be improved.

図6、図7は輪体成形方法およびその装置の他の実施例を示す。
図1〜図5で示した実施例においてはテーパベアリングの内輪(いわゆるインナレース)用のワークWの成形、サイジングに対応した実施例を示したが、この図6、図7で示す実施例においてはテーパベアリングの外輪(いわゆるアウタレース)用のワークWの成形、サイジングに対応した実施例を示すものである。
6 and 7 show another embodiment of the ring body forming method and apparatus.
In the embodiment shown in FIGS. 1 to 5, the embodiment corresponding to the molding and sizing of the workpiece W for the inner ring (so-called inner race) of the taper bearing is shown. In the embodiment shown in FIGS. These show the Example corresponding to the shaping | molding and sizing of the workpiece | work W for the outer ring | wheel (what is called an outer race) of a taper bearing.

このため図6に示す輪体成形装置の成形ローラ3には外輪用のワークWの外周面に対応した円柱状の輪体成形部3aが一体形成されており、同様にマンドレル5には外輪用のワークWの内周面に対応したテーパコーン状の輪体成形部5aが一体形成されている。   For this reason, a cylindrical ring body forming portion 3a corresponding to the outer peripheral surface of the outer ring work W is integrally formed on the forming roller 3 of the ring forming apparatus shown in FIG. A tapered cone-shaped ring body forming portion 5a corresponding to the inner peripheral surface of the workpiece W is integrally formed.

しかも、先の実施例と同様にしてサポートローラ7の摺接部7b,7b対向面部には抵抗低減層11,11が設けられている。   In addition, resistance reduction layers 11 and 11 are provided on the slidable contact portions 7b and 7b of the support roller 7 in the same manner as in the previous embodiment.

また図7に示すサイジング装置のサイジングケース12には、成形後の外輪用ワークWの外周をサイジングする連続円形断面のサイジング孔12bが形成され、このサイジングケース12のワーク入口側には、ワークWの挿入円滑化を図る目的でテーパ孔12eが形成され、サイジングケース12は所謂スルー構造に構成されている。   7 is formed with a sizing hole 12b having a continuous circular cross section for sizing the outer periphery of the outer ring workpiece W after molding. The sizing case 12 has a workpiece W on the workpiece inlet side. A tapered hole 12e is formed for the purpose of facilitating the insertion of the sizing member 12 and the sizing case 12 has a so-called through structure.

さらに上述のサイジングケース12の入口側には、押圧部材17を備えた油圧シリンダ18が配設され、この押圧部材17で成形後の外輪用ワークWをサイジング孔12dの入口側から挿入し、図7に仮想線で示すようにワークWを出口側へ押し出すことにより、ワークWをサイジングすべく構成している。   Further, a hydraulic cylinder 18 having a pressing member 17 is disposed on the inlet side of the sizing case 12 described above, and the outer ring workpiece W after molding is inserted from the inlet side of the sizing hole 12d by the pressing member 17. The workpiece W is configured to be sized by pushing the workpiece W toward the exit side as indicated by a virtual line in FIG.

このように構成しても先の実施例と同様にして、成形後のワークWの焼付き防止し、ワークWの寸法精度向上との両立を図ることができるので、図6、図7において前図と同一の部分には同一符号を付してその詳しい説明を省略する。   Even if configured in this manner, it is possible to prevent seizure of the workpiece W after molding and improve the dimensional accuracy of the workpiece W in the same manner as in the previous embodiment. The same parts as those in the figure are denoted by the same reference numerals, and detailed description thereof is omitted.

この発明の構成と、上述の実施例との対応において、
この発明のワークWは、実施例のテーパベアリング(詳しくはテーパロールベアリング)の内輪(インナレース)または外輪(アウタレース)に対応するも、
この発明は、上述の実施例の構成のみに限定されるものではない。
In the correspondence between the configuration of the present invention and the above-described embodiment,
The workpiece W of the present invention corresponds to the inner ring (inner race) or the outer ring (outer race) of the taper bearing (specifically, taper roll bearing) of the embodiment.
The present invention is not limited to the configuration of the above-described embodiment.

例えば、ワークとしてはテーパベアリングの内輪、外輪の他に、ワーク軸芯線に対して非平行となるようなテーパ状の外周面または内周面をもったベアリング以外のワークであってもよい。   For example, in addition to the inner ring and outer ring of the tapered bearing, the workpiece may be a workpiece other than a bearing having a tapered outer peripheral surface or inner peripheral surface that is non-parallel to the workpiece axis.

本発明の輪体成形装置を示す平面図The top view which shows the ring body shaping | molding apparatus of this invention 図1のA−A線矢視断面図1 is a cross-sectional view taken along line AA in FIG. 内輪用のワークのサイジングを示す説明図Explanatory drawing showing sizing of work for inner ring サイジング後のワーク押出しを示す説明図Explanatory drawing showing workpiece extrusion after sizing サイジングケースの部分拡大断面図Partial enlarged sectional view of the sizing case 輪体成形装置の他の実施例を示す平面図The top view which shows the other Example of a ring body shaping | molding apparatus. 外輪用ワークのサイジングを示す説明図Explanatory drawing showing sizing of work for outer ring 従来の輪体成形装置を示す平面図Plan view showing a conventional ring body forming apparatus

符号の説明Explanation of symbols

3…成形ローラ
3a…輪体成形部
5…マンドレル
5a…輪体成形部
5b…規制部
7…サポートローラ
7b…摺接部
11…抵抗低減層
12…サイジングケース
12a…小径孔
12b…大径孔
15…押出し部材
W…ワーク
DESCRIPTION OF SYMBOLS 3 ... Forming roller 3a ... Ring body shaping | molding part 5 ... Mandrel 5a ... Ring body shaping | molding part 5b ... Control part 7 ... Support roller 7b ... Sliding contact part 11 ... Resistance reduction layer 12 ... Sizing case 12a ... Small diameter hole 12b ... Large diameter hole 15 ... Extruded member W ... Workpiece

Claims (4)

周面に輪体成形部を形成した成形ローラと、
上記成形ローラに接離可能に対向され、中間部周面に輪体成形部が、両側周面に規制部が形成されたマンドレルと、
上記マンドレルの背面側に対設され、マンドレルの規制部と対接する摺接部が形成されたサポートローラとの3つの回転要素を回転可能に軸支してワークを成形する輪体成形装置であって、
上記サポートローラの摺接部においてワークの軸方向の側端面と対向する部分には、ワーク接触時の摩擦抵抗を低減する抵抗低減層が設けられた
輪体成形装置。
A molding roller having a ring-shaped molding part on its peripheral surface;
A mandrel which is opposed to the molding roller so as to be able to contact and separate, a ring body molding part is formed on the peripheral surface of the intermediate part, and a regulation part is formed on the peripheral surface of both sides;
A ring body forming apparatus for forming a workpiece by rotatably supporting three rotating elements, which are provided on the back side of the mandrel, and a support roller formed with a sliding contact portion that contacts a mandrel regulating portion. And
An annular body forming apparatus in which a resistance reducing layer for reducing a frictional resistance at the time of workpiece contact is provided at a portion facing the side end surface in the axial direction of the workpiece in the sliding contact portion of the support roller.
上記抵抗低減層は、材料の溶射層、コーティング層、固着層のうち少なくとも1つに設定された
請求項1記載の輪体成形装置。
The ring body forming apparatus according to claim 1, wherein the resistance reduction layer is set to at least one of a sprayed material layer, a coating layer, and a fixing layer.
成形ローラと、該成形ローラに接離可能に対向されるマンドレルと、マンドレルの背面側に対接されるサポートローラとを備え、該サポートローラのワーク軸方向の側端面と対向する部分に抵抗低減層が設けられた輪体成形装置を用いてワークを成形する成形工程と、
成形後のワークをサイジング装置を用いてサイジングするサイジング工程とを備えた輪体形成方法。
A forming roller, a mandrel opposed to the forming roller so as to be able to come into contact with and away from the forming roller, and a support roller facing the back side of the mandrel are provided, and resistance is reduced at a portion facing the side end surface of the support roller in the workpiece axial direction. A molding step of molding a workpiece using a ring body forming apparatus provided with a layer;
A ring body forming method comprising a sizing step of sizing a workpiece after molding using a sizing device.
上記ワークはテーパベアリングの内輪に設定され、
上記サイジング工程において、成形後のワークを、小径孔と大径孔とを備えたサイジングケース内に、その大径孔側から押圧挿入し、サイジング後のワークを小径孔側から挿入される押出し部材にて押出す
請求項3記載の輪体成形方法。
The above work is set to the inner ring of the taper bearing,
In the sizing step, the extruded workpiece is inserted into the sizing case having a small-diameter hole and a large-diameter hole by pressing and inserting the sized workpiece from the large-diameter hole side. The ring-shaped body forming method according to claim 3, wherein the ring body is extruded.
JP2004241812A 2004-08-23 2004-08-23 Method and apparatus for forming ring body Pending JP2006055894A (en)

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KR1020050024387A KR100613143B1 (en) 2004-08-23 2005-03-24 apparatus for forming a ring
CNA200510072801XA CN1739880A (en) 2004-08-23 2005-05-09 Ring forming method and apparatus thereof

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ITTO20130145A1 (en) * 2013-02-21 2014-08-22 Skf Ab COLD SPRAYING PROCEDURE FOR BEARING RING FORMING
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KR101079729B1 (en) * 2009-01-30 2011-11-04 손유홍 Ring mill apparatus for deformed inner diameter portion and deformed ring manufacturing method using the same
JP5581429B1 (en) * 2013-08-06 2014-08-27 株式会社山下鍛造所 Ring rolling mill
EP3283243B1 (en) 2015-04-17 2018-10-24 Hatebur Umformmaschinen AG Ring rolling device having axially fixed rolling-element bearings
US10870144B2 (en) 2015-04-17 2020-12-22 Hatebur Umformmaschinen Ag Ring rolling device with axially fixed rolling bearings
CN104942189A (en) * 2015-06-19 2015-09-30 保定天银机械有限公司 Machining device of constant velocity universal joint cage
CN108672619A (en) * 2018-04-28 2018-10-19 武汉理工大学 A kind of tapered roller bearing internal ring cold roll forming method

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