JP6710576B2

JP6710576B2 - Burnishing tools

Info

Publication number: JP6710576B2
Application number: JP2016099200A
Authority: JP
Inventors: 嘉保二村; 充泰漆谷; 陽太星野; 小林　正夫; 正夫小林; 靖彦尾方; 研二西脇
Original assignee: Ricoh Elemex Corp
Current assignee: Ricoh Elemex Corp
Priority date: 2016-05-18
Filing date: 2016-05-18
Publication date: 2020-06-17
Anticipated expiration: 2036-05-18
Also published as: JP2017205827A

Description

本発明はバニシング工具に関する。
The present invention relates to burnishing tools .

工作物表面の仕上げ加工にバニシング加工がある。バニシング加工では、工具先端の加工部を、所定の回転軸線周りを回転する工作物に圧接し、その圧接状態で回転軸線方向へとスライドさせる。これにより、工作物の外周表面の凹凸が圧接による塑性変形によって平滑化されていく（下記特許文献１参照）。 There is burnishing processing for finishing the work surface. In the burnishing process, the processed portion at the tip of the tool is brought into pressure contact with a work piece rotating around a predetermined rotation axis, and the work piece is slid in the rotation axis direction in the pressure contact state. As a result, the irregularities on the outer peripheral surface of the workpiece are smoothed by the plastic deformation due to the pressure contact (see Patent Document 1 below).

特許第３５２２１４２号公報Japanese Patent No. 3522142

こうしたバニシング加工においては、図１３に示すように、工具先端の加工部２００がＳＲ半球形状をなす。そして、図１４に示すように、そのＳＲ半球状の頂点２００ａｐを、回転する工作物Ｗの外表面に押し付けることにより加工が行われる。この押し付けは、ＳＲ半球状の加工部２００の頂点２００ａｐを、回転する工作物Ｗの回転中心１ｘに向かう１点に対しずれることなく接近させて押し付ける必要がある。これがずれると、加工部２００の押し圧が工作物Ｗに対し真っ直ぐに伝わらず、斜め方向から伝わることになり、本来与えるべき押し圧を工作物Ｗに与えることができなくなる。このため、従来のバニシング加工では、工作物Ｗと加工部２００の先端２００ａｐとの位置合わせに非常に高い精度が求められていた。 In such burnishing, as shown in FIG. 13, the processing portion 200 at the tip of the tool has an SR hemispherical shape. Then, as shown in FIG. 14, the SR hemispherical vertex 200 ap is pressed against the outer surface of the rotating workpiece W to perform the machining. In this pressing, it is necessary to press the vertex 200ap of the SR hemispherical processing part 200 so as to be close to one point toward the rotation center 1x of the rotating workpiece W without shifting. If this shifts, the pressing force of the processing unit 200 is not transmitted straight to the workpiece W, but is transmitted in an oblique direction, and it becomes impossible to give the original pressing force to the workpiece W. Therefore, in the conventional burnishing process, very high accuracy is required for the alignment of the workpiece W and the tip 200ap of the processing section 200.

また、従来のバニシング工具先端の加工部は、使用を重ねることで摩耗を生じる。加工部は、工具に着脱可能に取り付けられる押圧部材の先端部分であるから、摩耗が生じた場合には押圧部材ごと交換できるが、加工部にはダイヤモンド等が用いられているため非常に高価であり、摩耗のたびに交換することで非常にコストがかかってしまう。 Further, the conventional machined portion at the tip of the burnishing tool is worn by repeated use. Since the processing part is the tip of the pressing member that is detachably attached to the tool, it can be replaced together with the pressing member when wear occurs, but it is very expensive because the processing part uses diamond etc. Yes, it is very expensive to replace each time it wears.

本発明の課題は、工作物と工具の位置合わせが従来よりも容易で、なおかつ摩耗による交換頻度を減らすことができるバニシング工具を提供することにある。
An object of the present invention is to provide a burnishing tool in which the position of a workpiece and a tool can be aligned more easily than before and the frequency of replacement due to wear can be reduced.

上記課題を解決するバニシング工具は、
所定の回転軸線周りを回転する工作物に対して圧接可能な先端加工部を有し、その回転軸線方向へのスライドに伴い前記工作物の外周表面を塑性変形させる形で平滑化するバニシング工具用の押圧部材であって、前記工作物に圧接される前記先端加工部の先端が、その工作物に対する圧接方向と前記回転軸線方向との双方に対する直交方向において所定長さを有するとともに、その先端の所定長さの区間は、前記回転軸線方向の一方の側から見た場合に、前記直交方向の一方の側から他方の側に向かって直線状、又は前記工作物の回転半径よりも曲率半径が大きい凹曲線状をなすバニシング工具用の押圧部材と、
前記押圧部材を先端に取り付けて保持する保持部と、前記押圧部材における前記先端加工部の先端面が前記工作物に圧接するよう前記押圧部材を前記圧接方向に押圧する押圧手段として前記保持部を前記圧接方向の後方側から前方側へと付勢する付勢手段と、前記保持部の前記圧接方向への移動をガイドするガイド部と、を有した工具本体と、を備え、
前記ガイド部は、前記保持部の外周を取り囲む筒状部材であり、前記保持部及び前記ガイド部には、それら双方を貫通する形でピンが配置されており、それら双方の軸線周りの相対回転が阻止される一方で、
前記保持部のピン挿通部は、内部に配置された前記ピンの前記圧接方向への相対移動を禁止する形状をなし、他方、前記ガイド部のピン挿通部は、内部に配置された前記ピンの前記圧接方向への相対移動を所定区間において許容する長孔形状をなしており、前記保持部は、筒状の前記ガイド部に対しその内部を前記ピンと一体をなす形で、前記ピンが移動可能な前記所定区間に対応する区間を、前記圧接方向に移動可能とされていることを特徴とする。
A burnishing tool that solves the above problems is
For a burnishing tool that has a tip processed portion that can be pressed against a workpiece rotating around a predetermined rotation axis and that smoothes the outer peripheral surface of the workpiece plastically as the workpiece slides in the direction of the rotation axis. a pressing member, the distal end of the distal working portion which is pressed against the front Symbol workpiece, which has a predetermined length in the direction perpendicular to both the pressure direction and the rotational axial direction with respect to the workpiece, the tip the predetermined length of a section, wherein when viewed from one side of the rotational axis, the perpendicular direction of the one linear I suited from side to the other of, or the rotation radius of the workpiece a pressing member for a large radius of curvature concave-curved to a to server Nishingu tool,
A holding portion that attaches and holds the pressing member at the tip, and the holding portion as the pressing means that presses the pressing member in the press-contact direction so that the tip end surface of the tip processing portion of the pressing member presses the workpiece. A tool body having a biasing means for biasing from the rear side in the pressure contact direction to the front side, and a guide part for guiding the movement of the holding part in the pressure contact direction,
The guide part is a tubular member that surrounds the outer periphery of the holding part, and pins are arranged in the holding part and the guide part so as to penetrate both of them, and the relative rotation around the axes of both of them. While being blocked,
The pin insertion portion of the holding portion has a shape that prohibits relative movement of the pin arranged inside in the press contact direction, while the pin insertion portion of the guide portion is formed of the pin arranged inside. It has a long hole shape that allows relative movement in the pressing direction in a predetermined section, and the holding portion is movable with respect to the tubular guide portion such that the inside of the holding portion is integral with the pin. The section corresponding to the predetermined section is movable in the press contact direction .

上記構成によれば、従来のようにバニシング工具の加工部の頂点を工作物の１点を狙って接触させる、点と点の圧接ではなく、加工部の線状の先端を工作物の１点を狙って接する、線と点の圧接となる。このため、バニシング工具の加工部は、その線状の先端のいずれかの位置で工作物と接すればよく、従来のように点と点を合わせるような高精度の位置合わせは必要ない。また、線状の先端の一部に摩耗が生じたとしても、摩耗した位置からずらして工作物に接するようにすれば、継続して使用することができる。 According to the above configuration, the apex of the machining portion of the burnishing tool is aimed and brought into contact with one point of the work piece as in the conventional case. Instead of the point-to-point pressure welding, the linear tip of the machining section is set to one point of the work piece It is a pressure contact between a line and a point. Therefore, the processed portion of the burnishing tool has only to come into contact with the workpiece at any position of its linear tip, and does not require high-precision positioning such as point-to-point matching as in the prior art. Further, even if a part of the linear tip is worn, it can be continuously used by displacing it from the worn position and contacting the workpiece.

本発明の第一実施例に係るバニシング工具の平面図。The top view of the burnishing tool which concerns on 1st Example of this invention. 図１のＡ−Ａ断面図。AA sectional drawing of FIG. 図２の部分拡大図。The elements on larger scale of FIG. 図１の先端加工部と工作物とを示した斜視図。The perspective view which showed the front-end|tip process part of FIG. 1, and the workpiece. 図４の先端加工部による工作物の加工状態を示した側面図。The side view which showed the processing state of the workpiece|work by the front-end|tip process part of FIG. 図４の先端加工部による工作物の加工状態を示した平面図。The top view which showed the processing state of the workpiece|work by the front-end|tip process part of FIG. 図４の先端加工部に摩耗があるときの工作物の加工状態を示した側面図。The side view which showed the processing state of the workpiece|work when the front-end processing part of FIG. 4 has worn. 図４の先端加工部によって角部を有する工作物を加工する状態を示した平面図。The top view which showed the state which processes the workpiece which has a corner|angular part by the front-end|tip process part of FIG. 先端加工部の第一変形例を示した斜視図。The perspective view which showed the 1st modification of a front-end process part. 図９の先端加工部による工作物の加工状態を示した側面図。The side view which showed the processing state of the workpiece|work by the front-end|tip process part of FIG. 先端加工部の第二変形例を、図５及び図１０と同様の工作物の加工状態にて示した側面図。The side view which showed the 2nd modification of the front-end|tip process part in the processed state of the workpiece similar to FIG. 5 and FIG. 本発明の第二実施例に係るバニシング工具を、図１のＡ−Ａ断面と同じ断面にて示した図。The figure which showed the burnishing tool which concerns on 2nd Example of this invention in the same cross section as the AA cross section of FIG. 従来のバニシング工具の先端加工部の斜視図。The perspective view of the front end processing part of the conventional burnishing tool. 図１３の先端加工部による工作物の加工状態を示した側面図。The side view which showed the processing state of the workpiece|work by the front-end|tip process part of FIG.

以下、本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.

バニシング工具１は、図１及び図２に示すように、押圧部材（即ち、バニシング工具用の押圧部材）２と、その押圧部材２を押圧する押圧手段３を有した工具本体１０と、を備える。押圧部材２は、その先端に先端加工部２０を有する。先端加工部２０は、工作物Ｗ（図４参照）に対し圧接する。押圧手段３は、その先端加工部２０の先端２０ａｐが工作物Ｗに圧接するよう押圧部材２を圧接方向Ｙに押圧する。工作物Ｗは、所定の回転軸線１ｘの周りを回転する。先端加工部２０は、工作物Ｗとの圧接状態で、その回転軸線１ｘの方向へスライドする。回転する工作物Ｗとの圧接と、その圧接状態での工作物Ｗに対するスライド移動とにより、工作物Ｗの凹凸ある外周表面は、その凸部が潰れて凹部が埋まる塑性変形が生じ、平滑化されていく。 As shown in FIGS. 1 and 2, the burnishing tool 1 includes a pressing member (that is, a pressing member for the burnishing tool) 2 and a tool body 10 having a pressing means 3 for pressing the pressing member 2. .. The pressing member 2 has a tip processing portion 20 at its tip. The tip processing portion 20 is pressed against the workpiece W (see FIG. 4). The pressing means 3 presses the pressing member 2 in the pressing direction Y so that the tip 20 ap of the tip processing portion 20 presses the workpiece W. The workpiece W rotates about a predetermined rotation axis 1x. The tip processing part 20 slides in the direction of the rotation axis 1x in a state of pressure contact with the workpiece W. By the pressure contact with the rotating work W and the sliding movement with respect to the work W in the pressure contact state, the uneven outer peripheral surface of the work W undergoes plastic deformation in which the projections are crushed and the recesses are filled, and smoothed. Will be done.

押圧部材２は、バニシング工具１の先端となる圧接方向Ｙの前端の先端加工部２０と、その後方にて段差を形成する形で拡径するフランジ状の中間部２１と、その後方にて工具本体１０に組み付けられる後端部２２と、を有する。 The pressing member 2 includes a front end processed portion 20 which is the front end of the burnishing tool 1 in the pressure contact direction Y, a flange-shaped intermediate portion 21 which expands in a diameter to form a step behind the tool, and a tool behind it. And a rear end portion 22 assembled to the main body 10.

押圧手段３は、押圧部材２を圧接方向Ｙに付勢する付勢部材３であり、工具本体１０に着脱可能に取り付けられる。押圧手段３は、例えば弾性部材であるバネ部材３とすることができる。ここでは押圧手段３は圧縮バネである。 The pressing means 3 is an urging member 3 that urges the pressing member 2 in the pressing direction Y, and is detachably attached to the tool body 10. The pressing means 3 can be, for example, a spring member 3 that is an elastic member. Here, the pressing means 3 is a compression spring.

工具本体１０は、図２に示すように、押圧部材２を着脱可能に保持する保持部５と、押圧部材２が工作物Ｗに向かう圧接方向Ｙへの移動をガイドするガイド部６と、押圧部材２を圧接方向Ｙの後方側から前方側へと付勢するバネ部材３と、バネ部材３を圧接方向Ｙの逆側で支持する支持部８と、図示しない加工機に取り付けられる加工機取付部７と、を有する。ここでの支持部８及び加工機取付部７は、それらを一体に備える加工機取付部材（いわゆるシャンク）９の一部である。 As shown in FIG. 2, the tool body 10 includes a holding portion 5 that detachably holds the pressing member 2, a guide portion 6 that guides the movement of the pressing member 2 toward the workpiece W in the pressing direction Y, and a pressing portion. A spring member 3 that urges the member 2 from the rear side to the front side in the pressure contact direction Y, a support portion 8 that supports the spring member 3 on the opposite side in the pressure contact direction Y, and a processing machine attachment that is attached to a processing machine (not shown). And a part 7. The support portion 8 and the processing machine mounting portion 7 here are a part of a processing machine mounting member (so-called shank) 9 that integrally includes them.

保持部５は、圧接方向Ｙに軸線１ｙを有する柱状の保持部材（ここでは円柱状部材）をなす。保持部５の圧接方向Ｙの前端部には、押圧部材２を嵌挿する嵌挿部５１が設けられる。他方、保持部５の圧接方向Ｙの後端部には、バネ部材３を収容する収容部５２が設けられる。収容部５２は、収容したバネ部材３から圧接方向Ｙに向かう付勢力を受ける。 The holding portion 5 forms a columnar holding member (here, a columnar member) having an axis 1y in the pressing direction Y. A fitting insertion portion 51 into which the pressing member 2 is fitted is provided at a front end portion of the holding portion 5 in the pressure contact direction Y. On the other hand, a housing portion 52 for housing the spring member 3 is provided at the rear end portion of the holding portion 5 in the pressure contact direction Y. The accommodating portion 52 receives a biasing force in the press contact direction Y from the accommodated spring member 3.

嵌挿部５１は、図３に示すように、圧接方向Ｙの前端面５１ａに開口を有する有底筒状の凹部である。ここでの嵌挿部５１は、前端面５１ａに対し押圧部材２においてフランジ状に突出する中間部２１を当接させる形で、押圧部材２の後端部２２を嵌挿する。 As shown in FIG. 3, the fitting insertion portion 51 is a bottomed tubular concave portion having an opening in the front end surface 51a in the pressure contact direction Y. The fitting insertion portion 51 here fits the rear end portion 22 of the pressing member 2 in such a manner that the intermediate portion 21 projecting like a flange in the pressing member 2 is brought into contact with the front end surface 51a.

保持部５と押圧部材２とは抜け止め部材５０によって抜け止め状態に保持される。ここでの抜け止め部材５０はネジ部材である。保持部５は、嵌挿部５１の筒状部分の内外を貫通する雌ネジ孔５１ｈを有し、他方、押圧部材２は、後端部２２にその雌ネジ孔５１ｈと連通する凹部２２ｈを有する。凹部２２ｈは、円柱状の後端部２２の外周部の一部がカットされた平坦面（即ち、Ｄカット面）２５を底面として有する凹形状をなし、ネジ部材をなす抜け止め部材５０は、雌ネジ孔５１ｈに螺合する形で奥へと進入し、その先端を上記平坦面（即ち、Ｄカット面）２５に押し付けた状態となる。これにより、保持部５は、押圧部材２を圧接方向Ｙへの抜けを阻止した抜け止め状態で保持する。なお、この抜け止め状態は、保持部５と押圧部材２との双方の軸線１ｙ（工具軸線１ｙともいえる）の周りとなる周方向の位置決め状態でもあり、保持部５と押圧部材２との軸線１ｙ周りの相対回転を阻止している。ネジ部材である抜け止め部材５０を緩めれば、押圧部材２を保持部５から取り外すことができ、押圧部材２を交換できる。 The retaining portion 5 and the pressing member 2 are retained in the retaining state by the retaining member 50. The retaining member 50 here is a screw member. The holding portion 5 has a female screw hole 51h penetrating the inside and outside of the tubular portion of the fitting insertion portion 51, while the pressing member 2 has a recess 22h at the rear end 22 that communicates with the female screw hole 51h. .. The concave portion 22h has a concave shape having a flat surface (that is, a D-cut surface) 25 obtained by cutting a part of the outer peripheral portion of the cylindrical rear end portion 22 as a bottom surface, and the retaining member 50 forming a screw member is It is inserted into the female screw hole 51h in a form of being screwed in, and its tip is pressed against the flat surface (that is, the D-cut surface) 25. As a result, the holding portion 5 holds the pressing member 2 in a retaining state in which the pressing member 2 is prevented from coming off in the pressing direction Y. It should be noted that this retaining state is also a circumferential positioning state around the axis 1y (also referred to as the tool axis 1y) of both the holding part 5 and the pressing member 2, and the axis line of the holding part 5 and the pressing member 2 Relative rotation around 1y is blocked. By loosening the retaining member 50, which is a screw member, the pressing member 2 can be removed from the holding portion 5, and the pressing member 2 can be replaced.

ガイド部６は、保持部５の移動をガイドする筒状のガイド部材である。ガイド部６は、圧接方向Ｙの後端部６２が、支持部８の圧縮方向Ｙの前端外周部８２の内側に嵌挿されるとともに、圧接方向Ｙの後端側でフランジ状に突出する後端側外周部６３が、支持部８の前端外周部８２に対しボルト等の締結部材８０により固定されて、加工機取付部材９（図２参照）と一体化される。 The guide portion 6 is a tubular guide member that guides the movement of the holding portion 5. The rear end portion 62 of the guide portion 6 is fitted into the front end outer peripheral portion 82 of the support portion 8 in the compression direction Y and the rear end portion 62 protrudes like a flange on the rear end side of the pressure contact direction Y. The side outer peripheral portion 63 is fixed to the front end outer peripheral portion 82 of the support portion 8 by a fastening member 80 such as a bolt, and is integrated with the processing machine mounting member 9 (see FIG. 2).

また、筒状をなすガイド部６の内側には、互いの軸線を一致させる形で柱状の保持部５が配置され、保持部５の圧接方向Ｙの往復移動をガイドする。一方、ガイド部６は、抜け止め部材をなすピン（ここでは貫通部材ともいえる）６０によって、その保持部５を圧接方向Ｙへの抜けを阻止した抜け止め状態に保持する。ここでのガイド部６は、内外を貫通するピン挿通部（ここではピン挿通孔）６１ｈ，６１ｈを有し、他方、保持部５も、それらピン挿通部６１ｈ，６１ｈと連通するピン挿通部（ここではピン挿通孔）５２ｈを有する。ピン６０は、それらピン挿通部６１ｈ，５２ｈ，６１ｈの全てに挿通された状態で配置され、これにより保持部５とガイド部６とが抜け止め状態となる。なお、この抜け止め状態は、保持部５とガイド部６との軸線１ｙの周りとなる周方向の位置決め状態でもあり、保持部５とガイド部６との軸線１ｙ周りの相対回転を阻止している。 Further, a columnar holding portion 5 is arranged inside the tubular guide portion 6 such that their axes are aligned with each other, and guides the reciprocating movement of the holding portion 5 in the pressing direction Y. On the other hand, the guide portion 6 holds the holding portion 5 in a retaining state in which the retaining portion 5 is prevented from coming off in the press-contact direction Y by a pin (also referred to as a penetrating member here) 60 that serves as a retaining member. The guide portion 6 here has pin insertion portions (here, pin insertion holes) 61h and 61h penetrating the inside and outside, and the holding portion 5 also has pin insertion portions (the pin insertion portions 61h and 61h that communicate with them). Here, it has a pin insertion hole) 52h. The pin 60 is arranged in a state of being inserted through all of the pin insertion portions 61h, 52h, 61h, so that the holding portion 5 and the guide portion 6 are in a retaining state. The retaining state is also a circumferential positioning state of the holding section 5 and the guide section 6 around the axis 1y, and prevents relative rotation of the holding section 5 and the guide section 6 around the axis 1y. There is.

また、保持部５のピン挿通部５２ｈは、内部に貫通配置されたピン６０の圧接方向Ｙへの相対移動を禁止する形状をなす。ここでのピン挿通部５２ｈは、ピン６０に対応する形状の貫通孔、具体的にいえばピン６０と同形状の貫通孔をなす。これにより、保持部５は、ピン６０と一体となる形で、ガイド部６内を圧接方向Ｙに往復移動する。他方、ガイド部６のピン挿通部６１ｈ，６１ｈは、内部に貫通配置されたピン６０の圧接方向Ｙへの相対移動を、所定区間６１ｄにおいて許容する形状をなす。ここでのピン挿通部６１ｈ，６１ｈは、圧接方向Ｙを長手方向とする長孔形状（図１参照）をなす。これにより、保持部５は、ガイド部６に対しその内部を圧接方向Ｙに往復移動できる。ただし、保持部５は、ピン６０と一体に移動するため、その移動可能区間は、長孔形状をなすピン挿通部６１ｈ，６１ｈの長手方向における孔幅区間６１ｄのみに規制される。 Further, the pin insertion portion 52h of the holding portion 5 has a shape that prohibits relative movement of the pin 60 penetratingly arranged therein in the press contact direction Y. The pin insertion portion 52h here forms a through hole having a shape corresponding to the pin 60, specifically, a through hole having the same shape as the pin 60. As a result, the holding portion 5 reciprocates in the pressure contact direction Y in the guide portion 6 while being integrated with the pin 60. On the other hand, the pin insertion portions 61h, 61h of the guide portion 6 have a shape that allows relative movement of the pin 60 penetratingly arranged therein in the press contact direction Y in the predetermined section 61d. The pin insertion portions 61h and 61h here have a long hole shape (see FIG. 1) with the pressing direction Y as the longitudinal direction. As a result, the holding portion 5 can reciprocate in the pressure contact direction Y with respect to the inside of the guide portion 6. However, since the holding portion 5 moves integrally with the pin 60, the movable section thereof is restricted only to the hole width section 61d in the longitudinal direction of the pin insertion portions 61h, 61h having the elongated hole shape.

収容部５２は、圧接方向Ｙの後端面５２ａに開口する有底筒状の凹部であり、バネ部材３の圧接方向Ｙの前端側を収容する。収容部５２は、収容したバネ部材３の外周方向への位置ずれを規制するとともに、バネ部材３に接してその付勢力を受ける。一方で、支持部８は、バネ部材３の圧接方向Ｙの後端側に位置して、バネ部材３の圧縮を支持する。ここでの支持部８は、圧接方向Ｙの前端面８１ａに開口する有底筒状の凹部をなす収容部８１を有し、バネ部材３の圧接方向Ｙの後端側を収容する。収容部８１は、収容したバネ部材３の外周方向への位置ずれを規制するとともに、バネ部材３に接してその付勢力を支持する。圧縮バネであるバネ部材３は、前端側の保持部５と後端側の支持部８との間に形成される収容空間４内で、所定量の圧縮状態で収容される。バネ部材３は、その圧縮により生じる付勢力で保持部５を圧接方向Ｙに向けて押し付ける。収容空間４は、バネ部材３の圧縮量に応じてその容積が変化するため、支持部８には、収容空間４と外部とを連通させる通気孔４０が設けられている。 The accommodating portion 52 is a bottomed cylindrical recess that opens to the rear end surface 52a of the pressure contact direction Y, and accommodates the front end side of the spring member 3 in the pressure contact direction Y. The accommodating portion 52 regulates the positional deviation of the accommodated spring member 3 in the outer peripheral direction and contacts the spring member 3 to receive the biasing force thereof. On the other hand, the support portion 8 is located on the rear end side of the pressure contact direction Y of the spring member 3 and supports the compression of the spring member 3. The support portion 8 here has an accommodating portion 81 that is a bottomed tubular concave portion that opens to the front end face 81a in the pressure contact direction Y, and accommodates the rear end side of the spring member 3 in the pressure contact direction Y. The accommodating portion 81 regulates the positional deviation of the accommodated spring member 3 in the outer peripheral direction, and contacts the spring member 3 to support the urging force thereof. The spring member 3, which is a compression spring, is accommodated in a predetermined amount of compressed state in the accommodation space 4 formed between the holding portion 5 on the front end side and the support portion 8 on the rear end side. The spring member 3 presses the holding portion 5 in the pressing direction Y by the urging force generated by the compression. Since the volume of the accommodation space 4 changes according to the amount of compression of the spring member 3, the support portion 8 is provided with a vent hole 40 that communicates the accommodation space 4 with the outside.

バネ部材３の付勢力は、前端側の保持部５と後端側の支持部８とがより接近して、バネ部材３の圧縮量が増すほど大きくなり、これに伴い押圧部材２による工作物Ｗへの押圧力も大きくなる。つまり、バネ部材３の圧縮量が増すほど、押圧部材２が工作物Ｗを圧接するときに予め設定される予圧が増大する。この予圧は作業者によって調整することが可能である。以下、その予圧調整について説明する。 The urging force of the spring member 3 increases as the holding portion 5 on the front end side and the support portion 8 on the rear end side become closer to each other and the amount of compression of the spring member 3 increases, and accordingly, the workpiece by the pressing member 2 increases. The pressing force on W also increases. That is, as the amount of compression of the spring member 3 increases, the preload set in advance when the pressing member 2 presses the workpiece W increases. This preload can be adjusted by the operator. The preload adjustment will be described below.

バネ部材３の圧縮量は、保持部５と支持部８との距離に応じて決定される。また、この距離は、保持部５と一体に移動するピン６０が、ガイド部６の長孔形状をなすピン挿通部６１ｈ、６１ｈの孔幅区間６１ｄ内のどの位置に保持されているかで決定される。したがって、押圧部材２が工作物Ｗを圧接するときの予圧は、このピン６０の保持位置により決定される。 The compression amount of the spring member 3 is determined according to the distance between the holding portion 5 and the support portion 8. In addition, this distance is determined by the position of the pin 60 that moves integrally with the holding portion 5 in the hole width section 61d of the pin insertion portions 61h and 61h having the elongated hole shape of the guide portion 6. It Therefore, the preload when the pressing member 2 presses the workpiece W is determined by the holding position of the pin 60.

ここでのピン６０は、その端部（ピン端部）６０Ａがガイド部６のピン挿通孔６１ｈ、６１ｈから外部に突出している。一方、ガイド部６には、その外周上を圧接方向Ｙに往復移動可能な環状部材（ピン移動規制部材ともいえる）７０が配置される。そして、この環状部材７０は、ガイド部６のピン挿通孔６１ｈ、６１ｈ上に重なって位置することで、圧接方向Ｙに付勢されるピン６０の端部６０Ａに対し当接し、ピン６０の圧接方向Ｙへの移動を規制し、ピン６０をその当接位置に保持する。つまり、環状部材７０の位置を調整することにより、ピン挿通部６１ｈ，６１ｈの孔幅区間６１ｄの任意の位置に、ピン６０を位置保持できる。このように、保持部５と一体に移動するピン６０と、ピン挿通孔６１ｈ、６１ｈが設けられたガイド部６と、環状部材７０とが、予圧の調整手段として機能している。 An end portion (pin end portion) 60A of the pin 60 here projects to the outside from the pin insertion holes 61h and 61h of the guide portion 6. On the other hand, the guide portion 6 is provided with an annular member (also referred to as a pin movement restricting member) 70 that is capable of reciprocating on the outer circumference in the press contact direction Y. The annular member 70 is positioned so as to overlap with the pin insertion holes 61h and 61h of the guide portion 6 so as to come into contact with the end portion 60A of the pin 60 that is biased in the pressure contact direction Y, and the pressure contact of the pin 60. The movement in the direction Y is restricted, and the pin 60 is held at its abutting position. That is, by adjusting the position of the annular member 70, the pin 60 can be held at a desired position in the hole width section 61d of the pin insertion portions 61h, 61h. In this way, the pin 60 that moves integrally with the holding portion 5, the guide portion 6 provided with the pin insertion holes 61h and 61h, and the annular member 70 function as preload adjusting means.

なお、ここでの環状部材７０は、内周面に雌ネジが形成されたリングネジであり、ガイド部６には、その雌ネジに螺挿する雄ネジが外周面に形成されている。環状部材７０は、ガイド部６を内側に螺挿する形で、ガイド部６の外周上を圧接方向Ｙに往復移動できる。また、環状部材７０は、バネ部材３の付勢力により、自身のネジ山をガイド部６のネジ山に押し付けた押付状態で位置保持されている。ここでの環状部材７０は、ガイド部６上で圧接方向Ｙに隣接する形で複数設けられることで、圧接方向Ｙへの位置ずれを抑制している。 The annular member 70 here is a ring screw having a female screw formed on the inner peripheral surface thereof, and the guide portion 6 has a male screw formed on the outer peripheral surface thereof to be inserted into the female screw. The annular member 70 can reciprocate in the press-contact direction Y on the outer circumference of the guide portion 6 in such a manner that the guide portion 6 is screwed inward. Further, the annular member 70 is held in the pressed state in which the screw thread of the annular member 70 is pressed against the screw thread of the guide portion 6 by the biasing force of the spring member 3. The plurality of annular members 70 are provided adjacent to each other in the pressure contact direction Y on the guide portion 6 to suppress the displacement in the pressure contact direction Y.

本実施例のバニシング工具１は、その先端加工部２０の先端面形状（即ち加工面形状）に特徴を有する。 The burnishing tool 1 of the present embodiment is characterized by the tip surface shape (that is, the processed surface shape) of the tip processing portion 20.

工作物Ｗは、図５に示すように所定の回転軸線１ｘの周りを回転する。バニシング工具１の先端加工部２０は、回転する工作物Ｗの回転軸線１ｘに向かう方向（即ち圧接方向Ｙ）に先端２０ａｐを接近させて圧接する。そして、先端加工部２０は、図６に示すように、この圧接状態で回転軸線１ｘの方向（以下、回転軸線方向１ｘともいう）へスライドする。これにより、工作物Ｗの外周表面を塑性変形させる形で平滑化していく。 The workpiece W rotates about a predetermined rotation axis 1x as shown in FIG. The tip processing part 20 of the burnishing tool 1 brings the tip 20ap into close contact with the rotating workpiece W in the direction toward the rotation axis 1x (that is, the press contact direction Y). Then, as shown in FIG. 6, the tip processing portion 20 slides in the direction of the rotation axis 1x (hereinafter, also referred to as the rotation axis direction 1x) in this pressure contact state. As a result, the outer peripheral surface of the workpiece W is smoothed by plastically deforming it.

先端加工部２０の先端２０ａｐは、図５に示すように、回転する工作物Ｗに対しその回転軸線方向１ｘと圧接方向Ｙとの双方に対し直交する直交方向１ｚにおいて所定長さＺａを有する。また、その先端２０ａｐの所定長さＺａの区間は、図５のように回転軸線方向１ｘの一方の側から見た場合に、直交方向１ｚの一方の側（図５の上側）から他方の側（図５の下側）に向かって直線状をなす。さらにいえば、ここでの先端２０ａｐは、所定長さＺａの区間が直交方向１ｚにおいて直線状に延出する形状をなしている。 As shown in FIG. 5, the tip 20ap of the tip processing portion 20 has a predetermined length Za in the orthogonal direction 1z orthogonal to both the rotation axis direction 1x and the press contact direction Y of the rotating workpiece W. Further, the section of the predetermined length Za of the tip 20ap is, when viewed from one side in the rotation axis direction 1x as shown in FIG. 5, one side (the upper side in FIG. 5) of the orthogonal direction 1z to the other side. A straight line is formed toward (the lower side of FIG. 5). Furthermore, the tip 20ap here has a shape in which a section of the predetermined length Za extends linearly in the orthogonal direction 1z.

このため、先端加工部２０と、回転する工作物Ｗとの圧接は、先端加工部２０の先端２０ａｐの直線と、工作物Ｗの点とを接近させて接触させる圧接となる。したがって、先端加工部２０は、その先端２０ａｐの直線区間のいずれかの位置で工作物Ｗと接すればよく、従来のように点と点を合わせるような高精度の位置合わせは必要ない。 Therefore, the pressure contact between the tip processing part 20 and the rotating workpiece W is a pressure contact in which the straight line of the tip 20ap of the tip processing part 20 and the point of the work W are brought into close contact with each other. Therefore, the tip processing part 20 has only to come into contact with the workpiece W at any position in the straight line section of the tip 20ap, and it is not necessary to perform high-precision positioning such as point-to-point matching as in the conventional case.

また、直線状の先端２０ａｐの一部に摩耗が生じたとしても、図７に示すように、摩耗２０ｕの位置からずらして工作物Ｗに接するようにすれば、継続して使用することができる。これにより、ダイヤモンド等が用いられる非常に高価な先端加工部を有する押圧部材２を、摩耗が生じるたびに交換する必要が無い。バニシング工具１が取り付けられる加工機（図示なし）には、バニシング工具１（具体的にいえば加工機取付部７）を取り付ける工具取付部が設けられている。作業者は、先端２０ａｐの工作物Ｗに対する直交方向１ｚにおける圧接位置を調整し、摩耗２０ｕを避けることができる。なお、工具取付部に、直交方向１ｚにおける先端２０ａｐの位置を調整する位置調整機構（位置調整手段ともいえる）を設け、作業者がその位置調整機構を操作することにより、先端２０ａｐの工作物Ｗに対する圧接位置を調整するようにしてもよい。 Further, even if a part of the linear tip 20ap is worn, it can be continuously used if it is brought into contact with the workpiece W by being displaced from the position of the wear 20u as shown in FIG. .. As a result, it is not necessary to replace the pressing member 2 having a very expensive tip processed portion using diamond or the like each time abrasion occurs. A processing machine (not shown) to which the burnishing tool 1 is attached is provided with a tool attachment portion for attaching the burnishing tool 1 (specifically, the processing machine attachment portion 7). The operator can adjust the pressure contact position of the tip 20ap with respect to the workpiece W in the orthogonal direction 1z to avoid the wear 20u. A tool adjusting portion is provided with a position adjusting mechanism (also referred to as position adjusting means) for adjusting the position of the tip 20ap in the orthogonal direction 1z, and an operator operates the position adjusting mechanism to allow the workpiece W having the tip 20ap to be positioned. You may make it adjust the pressure contact position with respect to.

先端加工部２０の先端面２０ａは、その先端２０ａｐから回転軸線方向１ｘの両側に連続する面であり、少なくとも回転軸線方向１ｘおける双方の外端部において、外側に向かうほど工作物Ｗから離間して位置する面形状をなす。ここでの先端面２０ａは、直交方向１ｚにおいて直線状をなす先端２０ａｐから、回転軸線方向１ｘの両外側へと連続する面であって、回転軸線方向１ｘの両外側に向かうほど工作物Ｗとの離間距離が増すよう湾曲する湾曲面である。さらに具体的にいえば、先端面２０ａは、回転軸線方向１ｘにおいて圧接方向Ｙに突出する円弧形状が、直交方向１ｚの所定長さＺａの区間にかけて連続する面ともいえる。ここでの先端加工部２０は、全体がかまぼこ形状をなしている。 The tip surface 20a of the tip processing portion 20 is a surface that is continuous from the tip 20ap on both sides in the rotation axis direction 1x, and is spaced apart from the workpiece W toward the outside at least at both outer end portions in the rotation axis direction 1x. The surface shape is located at. The tip surface 20a here is a surface that is continuous from the tip 20ap that is linear in the orthogonal direction 1z to both outer sides in the rotation axis direction 1x, and the workpiece W becomes closer to both outer sides in the rotation axis direction 1x. Is a curved surface that is curved so that the separation distance thereof increases. More specifically, it can be said that the tip end surface 20a is a surface in which an arc shape protruding in the pressure contact direction Y in the rotation axis direction 1x is continuous over a section of a predetermined length Za in the orthogonal direction 1z. The tip-end processed portion 20 here has a generally semicylindrical shape.

また、このような先端２０ａｐが直線状の先端加工部２０の場合、回転軸線方向１ｘにおける幅Ｘａを従来よりも小さくすることが可能である。図１３及び図１４に示す従来のＳＲ半球状の先端加工部２００の場合、工作物Ｗの回転軸線方向１ｘにおける幅Ｘａを小さくすることは、その先端２００ａｐが先鋭となることを意味し、その形状は、バニシング工具の加工部よりも切削工具の加工部に近くなる。このため、従来のＳＲ半球状の先端加工部２００では、図８のように、角部ＷＡを有する工作物Ｗに対し、角部ＷＡのぎりぎりまでバニシング加工をしたい場合であっても、角部ＷＡから先端加工部２００の半径幅ａｒまでの区間を加工することができなかった。加工できない区間を減じるためには、ＳＲ半球状の先端加工部２００の径Ｘａを小さくする他ないが、そうすると上記したように切削工具の加工部に形状が近くなり、バニシングではなく切削が生じ、表面の平滑化ができない。これに対し、本実施例のような先端加工部２０の場合、先端２０ａが工作物Ｗに対し線接触のような形で接するため、回転軸線方向１ｘにおける幅Ｘａを小さくしても切削は生じにくい。よって、ここでの先端加工部２０の回転軸線方向１ｘの長さＸａは、先端２０ａｐの直交方向１ｚの長さＺａよりも短い。具体的にいえば、長さＸａは、１．０ｍｍ以上３．０ｍｍ以下の極小幅とすることができる。ＳＲ半球状の先端加工部２００がこの幅の直径を有していた場合には切削が生じる可能性があるが、本実施例では生じない。 Further, in the case where the tip 20ap is the tip-end processed portion 20 having a linear shape, the width Xa in the rotation axis direction 1x can be made smaller than in the conventional case. In the case of the conventional SR hemispherical tip processing portion 200 shown in FIGS. 13 and 14, reducing the width Xa of the workpiece W in the rotation axis direction 1x means that the tip 200ap is sharp, and The shape is closer to the working portion of the cutting tool than the working portion of the burnishing tool. Therefore, in the conventional SR hemispherical tip processing portion 200, even when it is desired to burnish the workpiece W having the corner portion WA to the very end of the corner portion WA as shown in FIG. The section from WA to the radius width ar of the tip processing portion 200 could not be processed. In order to reduce the non-machined section, the diameter Xa of the SR hemispherical tip machining portion 200 must be reduced, but as described above, the shape becomes closer to the machining portion of the cutting tool, and cutting occurs instead of burnishing. The surface cannot be smoothed. On the other hand, in the case of the tip working portion 20 as in the present embodiment, since the tip 20a contacts the workpiece W in the form of line contact, cutting occurs even if the width Xa in the rotation axis direction 1x is reduced. Hateful. Therefore, the length Xa of the tip processing portion 20 in the rotation axis direction 1x here is shorter than the length Za of the tip 20ap in the orthogonal direction 1z. Specifically, the length Xa can be a minimum width of 1.0 mm or more and 3.0 mm or less. If the SR hemispherical tip processed portion 200 has a diameter of this width, cutting may occur, but this does not occur in the present embodiment.

また、先端加工部２０は、直線状の先端２０ａｐが直交方向１ｚに延出していなければ、その先端２０ａｐが工作物Ｗに対し線接触のような形で接することはできない。このため、工具本体１０に押圧部材２を組み付けたときの先端加工部２０の先端２０ａｐの延出方向の把握は、非常に重要となる。ここでは、ガイド部６と保持部５のピン挿通部６１ｈ，５２ｈ，６１ｈ内に配置されたピン６０の挿通方向（即ち、ピン挿通方向）と、直交方向１ｚとが一致しており、ピン挿通部６１ｈ，５２ｈ，６１ｈにピン６０が挿通されて保持部５が組み付けられていれば、先端加工部２０の先端２０ａｐの延出方向（直線方向）は、直交方向１ｚと同じ方向となる。つまり、ピン６０の挿通方向と、先端加工部２０の先端２０ａｐの延出方向とが同じであるから、ピン６０の挿通方向から先端加工部２０の先端２０ａｐの延出方向を直感的に把握しやすい。仮にバニシング工具１を軸線１ｙの周りに回転させて使用するような場合であっても、ピン６０の挿通方向を見れば、先端加工部２０の先端２０ａｐの延出方向はすぐに把握できる。 Further, in the tip processing portion 20, unless the linear tip 20ap extends in the orthogonal direction 1z, the tip 20ap cannot come into contact with the workpiece W in a line contact manner. Therefore, it is very important to know the extending direction of the tip 20ap of the tip processing portion 20 when the pressing member 2 is assembled to the tool body 10. Here, the insertion direction (that is, the pin insertion direction) of the pin 60 arranged in the pin insertion portions 61h, 52h, 61h of the guide portion 6 and the holding portion 5 and the orthogonal direction 1z are coincident with each other, and the pin insertion If the pin 60 is inserted into the portions 61h, 52h, 61h and the holding portion 5 is assembled, the extending direction (linear direction) of the tip 20ap of the tip processing portion 20 is the same as the orthogonal direction 1z. That is, since the inserting direction of the pin 60 is the same as the extending direction of the tip 20ap of the tip processing part 20, the extending direction of the tip 20ap of the tip processing part 20 is intuitively grasped from the inserting direction of the pin 60. Cheap. Even when the burnishing tool 1 is rotated around the axis 1y and used, the extension direction of the tip 20ap of the tip processing portion 20 can be immediately grasped by looking at the insertion direction of the pin 60.

以上、本発明の一実施例を説明したが、これはあくまでも例示にすぎず、本発明はこれに限定されるものではなく、特許請求の範囲の趣旨を逸脱しない限りにおいて、当業者の知識に基づいて、追加及び省略等の種々の変更が可能である。 Although one embodiment of the present invention has been described above, this is merely an example and the present invention is not limited to this, and is within the knowledge of a person skilled in the art without departing from the scope of the claims. Based on this, various modifications such as addition and omission are possible.

以下、上記実施例とは異なる別の実施例や変形例について説明する。なお、上記実施例と共通の機能を有する部位には同一符号を付して詳細な説明を省略する。また、上記実施例と下記例とは、技術的な矛盾を生じない範囲において適宜組み合わせて実施できる。 Hereinafter, another embodiment or modification different from the above embodiment will be described. It should be noted that parts having the same functions as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. In addition, the above-described embodiment and the following example can be appropriately combined and implemented within a range not causing a technical contradiction.

上記実施例の先端加工部２０は、かまぼこ形状をなしているが、回転する工作物Ｗに対し線接触のような形で接する形状であれば、他の形状であってもよい。 Although the tip processing portion 20 in the above-described embodiment has a semi-cylindrical shape, it may have another shape as long as it is in contact with the rotating workpiece W in a manner like line contact.

例えば図９及び図１０に示すように、先端加工部２０の先端面２０ａは、圧接方向Ｙ（工具軸線１ｙ）と回転軸線方向１ｘとの双方に対する直交方向１ｚにおいて所定長さＺａを有するとともに、その所定長さＺａの区間はその直交方向の一方の側から他方の側に向かって直線状をなす形で、回転軸線方向１ｘの両外側へと連続する平坦面とすることができる。図９及び図１０の場合、先端加工部２０の先端面２０ａは、所定長さＺａの区間が直交方向に対し直線状をなす形で回転軸線方向１ｘの両外側へと連続する平坦面となっている。なお、先端面２０ａは、中心部をなす平坦面に対しその外周側に位置する外周部（外端部ともいえる）が外側に向かうほど工作物Ｗから離間して位置する面取り形状をなす。この面取り形状は、湾曲面形状（即ち、Ｒ形状）をなすことが望ましい。 For example, as shown in FIGS. 9 and 10, the tip end surface 20a of the tip end working portion 20 has a predetermined length Za in a direction 1z orthogonal to both the pressure contact direction Y (tool axis 1y) and the rotation axis direction 1x, and The section of the predetermined length Za can be a flat surface that is continuous from one side in the orthogonal direction to the other side and is continuous to both outer sides in the rotation axis direction 1x. In the case of FIG. 9 and FIG. 10, the tip end surface 20a of the tip end working portion 20 is a flat surface that is continuous to both outsides in the rotation axis direction 1x such that the section of the predetermined length Za is linear with respect to the orthogonal direction. ing. The tip end surface 20a has a chamfered shape in which the outer peripheral portion (also referred to as the outer end portion) located on the outer peripheral side of the flat surface forming the central portion is located further away from the workpiece W as it goes outward. The chamfered shape is preferably a curved surface shape (that is, an R shape).

また、図１１に示すように、先端加工部２０の先端２０ａｐは、直交方向１ｚにおいて所定長さを有するとともに、その所定長さＺａの区間は、前記回転軸線方向１ｘの一方の側から見た場合に、直交方向１ｚの一方の側から他方の側に向かって、工作物Ｗの回転半径よりも曲率半径が大きい凹曲線状をなすものでもよい。さらにいえば、先端加工部２０の先端面２０ａは、直交方向１ｚにおいて所定長さＺａの区間がその凹曲線状をなす形で回転軸線方向１ｘの両外側へと連続する凹状湾曲面であってもよい。 Further, as shown in FIG. 11, the tip 20ap of the tip processing portion 20 has a predetermined length in the orthogonal direction 1z, and the section of the predetermined length Za is viewed from one side in the rotation axis direction 1x. In this case, the concave curve may have a larger radius of curvature than the radius of rotation of the workpiece W from one side of the orthogonal direction 1z toward the other side. Furthermore, the tip surface 20a of the tip processing portion 20 is a concave curved surface that is continuous to both outer sides in the rotation axis direction 1x in a manner that a section having a predetermined length Za in the orthogonal direction 1z forms a concave curve. Good.

なお、上記先端加工部２０の先端２０ａｐは、直交方向１ｚにおいて所定長さＺａを有するとともに、その所定長さＺａの区間が、回転軸線方向１ｘの一方の側から見た場合に、直交方向１ｚの一方の側から他方の側に向かう直線状や上述の凹曲線状をなしていればよい。この形状には、先端２０ａｐの所定長さＺａの区間が直交方向１ｚに対し傾斜した形状や、先端面２０ａを圧接方向Ｙの正面側から見た場合に先端２０ａｐが直線状ではない形状等も含まれる。 The tip 20ap of the tip processing portion 20 has a predetermined length Za in the orthogonal direction 1z, and when the section of the predetermined length Za is viewed from one side in the rotation axis direction 1x, the orthogonal direction 1z. It suffices to form a straight line extending from one side to the other side or the above-mentioned concave curve. This shape also includes a shape in which a section of the tip 20ap having a predetermined length Za is inclined with respect to the orthogonal direction 1z, a shape in which the tip 20ap is not linear when the tip surface 20a is viewed from the front side in the pressing direction Y, and the like. included.

また、上記実施例の環状部材７０に代わって、スペーサ７００を配置することもできる。スペーサ７００は、例えば図１２に示すようなガイド部６を内側に嵌挿する筒状部材とすることができる。スペーサ７００は、圧接方向Ｙにおいて所定の長さ７００ｄを有しており、ピン挿通部６１ｈ，６１ｈに対し一定長さ重なって、ピン６０の移動可能範囲を減少させる。ただし、スペーサ７００を用いる場合、スペーサ７００の圧接方向Ｙへの移動を規制するスペーサ移動規制部材が必要となる。図１２の場合、スペーサ移動規制部材は、ガイド部６の外周を取り囲むように配置されるスペーサ７００の圧接方向Ｙの前方側に、同様にガイド部６の外周を取り囲むように配置される押さえ部材７０１である。ここでの押さえ部材７０１は、ガイド部６に対し着脱可能に固定されている。具体的にいえば、押さえ部材７０１は、ガイド部６の外周を取り囲む後端筒状部７１２と、ガイド部６の圧接方向Ｙの前端と当接するとともに保持部５が貫通する前端環状部７１１と、を有しており、その前端環状部７１１に対しボルト等の締結部材７０２によってガイド部６に対し固定されている。 Further, the spacer 700 may be arranged in place of the annular member 70 of the above embodiment. The spacer 700 may be, for example, a tubular member into which the guide portion 6 shown in FIG. 12 is fitted and inserted. The spacer 700 has a predetermined length 700d in the pressing direction Y and overlaps the pin insertion portions 61h and 61h by a certain length to reduce the movable range of the pin 60. However, when the spacer 700 is used, a spacer movement restricting member that restricts the movement of the spacer 700 in the pressure contact direction Y is required. In the case of FIG. 12, the spacer movement restricting member is a pressing member that is also arranged so as to surround the outer circumference of the guide portion 6 on the front side in the pressure contact direction Y of the spacer 700 that is arranged so as to surround the outer circumference of the guide portion 6. 701. The pressing member 701 here is detachably fixed to the guide portion 6. Specifically, the pressing member 701 includes a rear end tubular portion 712 that surrounds the outer periphery of the guide portion 6, and a front end annular portion 711 that abuts on the front end of the guide portion 6 in the pressure contact direction Y and through which the holding portion 5 penetrates. , And is fixed to the guide portion 6 by a fastening member 702 such as a bolt with respect to the front end annular portion 711.

スペーサ７００は、長さ７００ｄが異なる複数種のものが用意されており、必要な予圧に応じて交換して使用される。一定の長さ７００ｄを有するスペーサ７００は、押さえ部材７０１が存在することで位置ずれの心配が無く、常に一定の予圧を設定することができる。スペーサ７００と押さえ部材７０１とがピン移動規制部材として機能し、予圧の調整手段としての役割も果たす。また、押圧部材２が工作物に対して連続的に圧接するのではなく、断続的に圧接する場合には、その時の押圧部材２の突出量を規制する突出量規制手段としての役割も果たす。なお、図３の環状部材７０もこの突出量規制手段としての役割を果たす。 A plurality of types of spacers 700 having different lengths 700d are prepared, and the spacers 700 are exchanged for use according to the required preload. Since the spacer 700 having the constant length 700d has no pressing member 701, there is no fear of positional displacement, and a constant preload can be set at all times. The spacer 700 and the pressing member 701 function as a pin movement restricting member and also serve as a preload adjusting unit. Further, when the pressing member 2 does not press the work piece continuously, but intermittently presses it, the pressing member 2 also serves as a protrusion amount control means for controlling the protrusion amount of the pressing member 2 at that time. The annular member 70 shown in FIG. 3 also serves as the protrusion amount restricting means.

１バニシング工具
１０工具本体
２押圧部材（バニシング工具用の押圧部材）
３押圧手段（バネ部材）
５保持部
６ガイド部
８支持部
７０環状部材
７００スペーサ
７０１押さえ部材
２０先端加工部
２０ａ先端加工部の先端面
２０ａｐ先端加工部の先端
Ｗ工作物
Ｙ圧接方向 1 burnishing tool 10 tool body 2 pressing member (pressing member for burnishing tool)
3 Pressing means (spring member)
5 Holding part 6 Guide part 8 Support part 70 Annular member 700 Spacer 701 Holding member 20 Tip processing part 20a Tip surface of tip processing part 20ap Tip of tip processing part W Workpiece Y Pressing direction

Claims

For a burnishing tool that has a tip processed portion that can be pressed against a workpiece rotating around a predetermined rotation axis and that smoothes the outer peripheral surface of the workpiece plastically as the workpiece slides in the direction of the rotation axis. a pressing member, the distal end of the distal working portion which is pressed against the front Symbol workpiece, which has a predetermined length in the direction perpendicular to both the pressure direction and the rotational axial direction with respect to the workpiece, the tip the predetermined length of a section, wherein when viewed from one side of the rotational axis, the perpendicular direction of the one linear I suited from side to the other of, or the rotation radius of the workpiece a pressing member for a large radius of curvature concave-curved to a to server Nishingu tool,
A holding portion that attaches and holds the pressing member at the tip, and the holding portion as the pressing means that presses the pressing member in the press-contact direction so that the tip end surface of the tip processing portion of the pressing member presses the workpiece. A tool body having a biasing means for biasing from the rear side in the pressure contact direction to the front side, and a guide part for guiding the movement of the holding part in the pressure contact direction,
The guide part is a tubular member that surrounds the outer periphery of the holding part, and pins are arranged in the holding part and the guide part so as to penetrate both of them, and the relative rotation around the axes of both of them. While being blocked,
The pin insertion portion of the holding portion has a shape that prohibits relative movement of the pin arranged inside in the press contact direction, while the pin insertion portion of the guide portion is formed of the pin arranged inside. It has a long hole shape that allows relative movement in the pressing direction in a predetermined section, and the holding portion is movable with respect to the tubular guide portion such that the inside of the holding portion is integral with the pin. A burnishing tool , wherein a section corresponding to the predetermined section is movable in the press contact direction .

The burnishing tool according to claim 1 , wherein the pin insertion direction of a pin insertion portion provided on both the guide portion and the holding portion and the orthogonal direction coincide with each other.

The urging means is a compression spring that is arranged in a compression manner in the pressure contact direction between the holding portion on the front side in the pressure contact direction and the support portion on the rear side in the pressure contact direction forming the tool body. The biasing force determined by the amount of compression according to the distance between the holding portion and the support portion causes the pin that moves integrally with the holding portion to move the pin in the predetermined section of the pin insertion portion of the guide portion in the pressure contact direction at the front end side. The pin is held in position by holding the pin, and the holding position of the pin determines the preload when the pressing member press-contacts the workpiece.
The pin has a pin end portion protruding outward from a pin insertion hole of the guide portion,
A pin movement restricting member that is reciprocally movable on the outer periphery of the guide portion in the press contact direction is disposed,
When the pin movement restricting member is arranged so as to overlap the pin insertion hole of the guide portion, the pin movement restricting member contacts the pin end portion from the front side in the pressure contact direction, and positions the pin at the contact position. by holding, burnishing tool according to claim 1 or claim 2 to adjust the holding position of the pin in the predetermined interval within.

The pin movement restricting member has a plurality of female threads formed on the inner circumference thereof so that the pin movement restricting member can reciprocate in the press-contact direction on the guide section by screwing the guide section having an outer thread formed on the outer circumference. The burnishing tool according to claim 3 , wherein the burnishing tool is an annular member.

The pin movement restricting member is located at a front side of the spacer in a cylindrical shape into which the guide part is fitted and is inserted in the guide part so as to restrict movement of the spacer in the press contact direction. The burnishing tool according to claim 3 , wherein the spacer movement restricting member is assembled.