JP2016128195A5 - - Google Patents
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- JP2016128195A5 JP2016128195A5 JP2015003407A JP2015003407A JP2016128195A5 JP 2016128195 A5 JP2016128195 A5 JP 2016128195A5 JP 2015003407 A JP2015003407 A JP 2015003407A JP 2015003407 A JP2015003407 A JP 2015003407A JP 2016128195 A5 JP2016128195 A5 JP 2016128195A5
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- 238000005520 cutting process Methods 0.000 claims description 114
- 230000002093 peripheral Effects 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 43
- 239000010730 cutting oil Substances 0.000 description 13
- 210000002832 Shoulder Anatomy 0.000 description 12
- 238000003466 welding Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005498 polishing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001960 triggered Effects 0.000 description 1
Description
本発明は、環状部材の内周面に切削加工を施す為の総型切削工具の改良に関する。 The present invention relates to an improvement in a total-type cutting tool for performing cutting on an inner peripheral surface of an annular member.
各種回転機械装置の軸受部等、各種回転部分を支持する為のラジアル玉軸受として、特許文献１には、図８に示す様な玉軸受１が記載されている。この様な玉軸受１を構成する外輪２又は内輪３の内周面の形状は、例えば、総型切削工具が組み込まれた工作機械（旋盤等）を使用した切削加工により形成される。以下、前記外輪２の内周面に、外輪軌道４、１対の肩部５ａ、５ｂ、及び１対のシール係止溝６ａ、６ｂを形成する為の切削加工方法に就いて、図９を参照しつつ簡単に説明する。 Patent Document 1 discloses a ball bearing 1 as shown in FIG. 8 as a radial ball bearing for supporting various rotating parts such as bearings of various rotating machine devices. The shape of the inner peripheral surface of the outer ring 2 or the inner ring 3 constituting such a ball bearing 1 is formed by, for example, cutting using a machine tool (such as a lathe) in which a total cutting tool is incorporated. Hereinafter, a cutting method for forming the outer ring raceway 4, the pair of shoulder portions 5a, 5b, and the pair of seal locking grooves 6a, 6b on the inner peripheral surface of the outer ring 2 will be described with reference to FIG. A brief description will be given with reference.
図９に示す切削加工方法の被加工物である環状部材（ワーク）は、軸方向一端部（図９の左端部）が、工作機械の主軸（図示省略）に、チャック装置等を介して固定された円柱状のワーク７の軸方向他端部（図９の右端部）に形成された円筒状部分８により構成されている。尚、軸方向、周方向、及び径方向とは、特に断らない限り、工作機械に総型切削工具を固定した状態に於ける、この総型切削工具に関する各方向を言う。 An annular member (workpiece) that is a workpiece of the cutting method shown in FIG. 9 has one axial end (left end in FIG. 9) fixed to the main spindle (not shown) of the machine tool via a chuck device or the like. It is comprised by the cylindrical part 8 formed in the axial direction other end part (right end part of FIG. 9) of the column-shaped workpiece 7 made. The axial direction, the circumferential direction, and the radial direction refer to directions related to the total cutting tool in a state where the total cutting tool is fixed to the machine tool unless otherwise specified.
前記円筒状部材８の軸方向他方側には、前記工作機械の一部に固定ブッシュ９を介して支持固定された総型切削工具１０が配置されている。この総型切削工具１０は、軸方向先端（軸方向一端）寄り部分の外周面の円周方向一部に、加工後の前記外輪２の内周面の断面形状（外輪２の中心軸を含む仮想平面に関する断面形状）に沿う輪郭形状の歯先を有する歯部１１が形成されている。 On the other side of the cylindrical member 8 in the axial direction, a total cutting tool 10 supported and fixed by a part of the machine tool via a fixing bush 9 is disposed. The total cutting tool 10 includes a cross-sectional shape of the inner peripheral surface of the outer ring 2 after processing (including the central axis of the outer ring 2) at a part of the outer peripheral surface near the tip in the axial direction (one axial end). A tooth portion 11 having a tooth tip having a contour shape along the cross-sectional shape of the virtual plane) is formed.
加工の際には、前記ワーク７（円筒状部分８）を回転させた状態で、前記総型切削工具１０を、この総型切削工具１０の軸方向先端部が、前記円筒状部分８の内径側に位置するまで軸方向に移動させる。この際、前記総型切削工具１０は回転していない。又、この状態で、給油ノズル１２及び前記固定ブッシュ９の軸方向一端面に開口した給油孔１３から切削油を、図９に矢印α１、α２で示す様に噴射しておく。そして、前記総型切削工具１０を径方向外方（図９の下方）に変位させて、前記歯部１１を前記円筒状部分８の内周面に当接させる。すると、この円筒状部分８の内周面が、前記歯部１１の歯先の輪郭形状（軸方向に直交する仮想平面に関する断面形状）に沿う様な形状に削られて、前記外輪軌道４、前記両肩部５ａ、５ｂ、及び前記両シール係止溝６ａ、６ｂが形成される。 At the time of processing, in the state where the workpiece 7 (cylindrical portion 8) is rotated, the total cutting tool 10 is set so that the tip end in the axial direction of the total cutting tool 10 is the inner diameter of the cylindrical portion 8. Move axially until it is on the side. At this time, the total cutting tool 10 is not rotating. In this state, the cutting oil is sprayed from the oil supply nozzle 12 and the oil supply hole 13 opened at one end face in the axial direction of the fixed bush 9 as shown by arrows α 1 and α 2 in FIG. Then, the total cutting tool 10 is displaced radially outward (downward in FIG. 9) to bring the tooth portion 11 into contact with the inner peripheral surface of the cylindrical portion 8. Then, the inner peripheral surface of the cylindrical portion 8 is cut into a shape along the contour shape of the tooth tip of the tooth portion 11 (cross-sectional shape with respect to a virtual plane orthogonal to the axial direction), and the outer ring raceway 4, Both the shoulder portions 5a and 5b and the both seal locking grooves 6a and 6b are formed.
以上の様な切削加工方法の場合、前述の位置に前記給油ノズル１２及び前記給油孔１３を設けている為、前記切削油が、前記総型切削工具１０の歯部１１の先端部（図９にβで示す部分）にまで行き渡り難い。この為、切削加工中に、この歯部１１の先端部が高温となり、当該部分に溶着や摩耗等の損傷が生じる可能性がある。この様な損傷が生じた場合には、前記歯部１１の再研磨、或いは工具の交換が必要となり、加工コストが嵩んでしまう。又、上述の切削加工方法の場合、前記円筒状部分８の軸方向一端部（軸方向奥端部）が底部により塞がれている。この為、前述の様な状態で切削油を噴射していると、切りくず（切り粉、切り滓）が、前記円筒状部分８の内径側の軸方向一端側に押し込まれて、外部に排出され難い。この結果、加工後に、前記切りくずを取り除く為の作業が必要となり、作業効率が低下してしまう。又、この切りくずが残っていると、加工後の前記円筒状部材８を傷つけてしまう可能性もある。 In the case of the cutting method as described above, since the oil supply nozzle 12 and the oil supply hole 13 are provided at the above-described positions, the cutting oil is at the tip of the tooth portion 11 of the total cutting tool 10 (FIG. 9). It is difficult to get to the part indicated by β. For this reason, during cutting, the tip of the tooth portion 11 becomes hot, and there is a possibility that damage such as welding or wear may occur in the portion. When such damage occurs, the tooth portion 11 needs to be re-polished or the tool needs to be replaced, increasing the processing cost. In the case of the above-described cutting method, one end portion in the axial direction (back end portion in the axial direction) of the cylindrical portion 8 is closed by the bottom portion. For this reason, when the cutting oil is sprayed in the state as described above, chips (swarf and swarf) are pushed into one axial end on the inner diameter side of the cylindrical portion 8 and discharged to the outside. It is hard to be done. As a result, after machining, an operation for removing the chips is required, and work efficiency is lowered. Further, if the chips remain, the cylindrical member 8 after processing may be damaged.
本発明は、上述の様な事情に鑑みて、歯部の先端部に溶着や摩耗等の損傷が生じる事の防止を図ると共に、加工中に生じる切りくずを、環状部材の外部に排出し易い総型切削工具の構造を実現すべく発明したものである。 In view of the circumstances as described above, the present invention aims to prevent damage such as welding and wear from occurring at the tip of the tooth portion, and to easily discharge chips generated during processing to the outside of the annular member. The invention was invented to realize the structure of the total cutting tool.
本発明の総型切削工具は、少なくとも一部に環状部を有するワークのうち、この環状部の内周面に対して、このワークを回転させると共に、自身の回転を阻止された状態で、且つ、前記ワークに対する軸方向の変位を行わずに、切削加工を施す為のものである。
具体的には、例えば、本発明の総型切削工具は、前記ワークの環状部の軸方向一端部（総型切削工具が配置された側と反対側の端部）が、このワークと一体に設けられた底部、又は別体に設けられた蓋体により塞がれた状態で行う切削加工方法に好適に使用する事ができる。
この様な本発明の総型切削工具は、軸状の工具本体と、歯部とを備えている。
このうちの工具本体は、加工時に、少なくとも軸方向先端部が前記環状部の内側に挿入されるものである。
前記歯部は、前記工具本体の軸方向先端部に、この工具本体と一体又は別体に設けられており、前記環状部の加工完了後の内周面の断面形状に合致する歯先形状を有している。
そして、前記工具本体に、軸方向一端側の開口部が、加工時に、この工具本体のうちの前記環状部の内側に挿入される部分の軸方向先端側を向いた面に開口しており、切削油を前記歯部に供給する為の給油通路が形成されている。
尚、歯部は、前記工具本体に直接形成しても良いし、別体に設けたものを、前記工具本体に結合固定しても良い。
Total type cutting tool of the present invention, among the work having a circular section at least in part, the inner circumferential surface of the annular portion, with rotating the workpiece, while being prevented from rotating itself, and In order to perform cutting without performing axial displacement with respect to the workpiece .
Specifically, for example, in the total cutting tool of the present invention, one end in the axial direction of the annular portion of the workpiece (the end opposite to the side on which the total cutting tool is disposed) is integrated with the workpiece. It can be used suitably for the cutting method performed in the state closed by the provided bottom or the lid provided separately.
Such a total cutting tool of the present invention includes a shaft-shaped tool body and a tooth portion.
Of these, the tool main body is one in which at least the axial tip is inserted inside the annular portion during processing.
The tooth portion is provided at the tip end portion in the axial direction of the tool main body integrally or separately from the tool main body, and has a tooth tip shape that matches the cross-sectional shape of the inner peripheral surface after the processing of the annular portion is completed. Have.
And, in the tool body, an opening on one end side in the axial direction is opened on the surface facing the tip end side in the axial direction of the portion inserted into the annular portion of the tool body during processing, An oil supply passage for supplying cutting oil to the tooth portion is formed.
The tooth portion may be formed directly on the tool body, or a separate part may be connected and fixed to the tool body.
上述の様な本発明の総型切削工具を実施する場合には、追加的に、前記歯部を、前記工具本体の軸方向先端部の円周方向一部に設ける事ができる。この様な構成を採用した場合には、追加的に、前記給油通路の軸方向一端側の開口部のうちの少なくとも一部、好ましくは内径側部を、前記工具本体の先端面に開口させる事ができる。 When carrying out the total type cutting tool such invention described above, additionally, the front KIHA portion, can be provided in the circumferential direction a portion of the axial tip portion of the tool body. In the case of adopting such a configuration, additionally, at least a part , preferably the inner diameter side portion of the opening portion on one end side in the axial direction of the oil supply passage is opened on the tip surface of the tool body. Can do.
上述の様な発明を実施する場合には、追加的に、前記給油通路の軸方向一端側の開口部のうちの少なくとも一部を、前記工具本体の先端面のうち、円周方向に関して前記歯部と反対側半部に開口させる事ができる。 When carrying out the inventions such as described above may additionally, at least some of the openings in the one axial end side of the front Symbol oil supply passage, out of the distal end surface of the tool body, in the circumferential direction It can open to the half part on the opposite side to the said tooth part.
さらに、前記歯部を、前記工具本体の軸方向先端部の円周方向一部に設け、前記給油通路の軸方向一端側の開口部のうちの少なくとも一部を、前記工具本体の先端面に開口させる場合には、追加的に、前記給油通路の軸方向一端側の開口部のうちの少なくとも一部を、前記工具本体の軸方向先端面のうち、前記歯部が形成された位置に対して、加工時の前記ワークの回転方向と反対方向側端部に開口させる事ができる。
上述の様な本発明の総型切削工具を実施する場合には、追加的に、前記給油通路を、少なくとも軸方向一部が径方向外方に開口した状態で形成する事ができる。
上述の様な本発明の総型切削工具を実施する場合には、追加的に、前記給油通路の、軸方向に直交する仮想平面に関する断面形状が、四角形状に形成する事ができる。
本発明のラジアル軸受の製造方法は、内周面に外輪軌道を有する外輪と、外周面に内輪軌道を有する内輪と、を備えたラジアル軸受のうち、前記外輪の内周面と前記内輪の内周面とのうちの少なくとも一方を、本発明の総型切削工具を用いて切削する工程を含むものである。
Further, the tooth portion is provided in a part in the circumferential direction of the axial tip portion of the tool body, and at least a part of the opening on the one axial end side of the oil supply passage is provided on the tip surface of the tool body. in the case where the opening is may additionally, at least some of the openings in the one axial end side of the front Symbol oil supply passage, of the axial front end surface of the tool body, to a position where the tooth portion is formed On the other hand, it can open at the edge part on the opposite side to the rotation direction of the said workpiece | work at the time of a process.
When carrying out the total type cutting tool such invention described above, additionally, the pre-Symbol oil supply passage can be formed with at least axially partially open radially outward.
When carrying out the total type cutting tool such invention described above, additionally, before Symbol oil supply passage, the cross-sectional shape about the imaginary plane perpendicular to the axial direction, can be formed in a rectangular shape.
A radial bearing manufacturing method according to the present invention includes a radial bearing including an outer ring having an outer ring raceway on an inner peripheral surface and an inner ring having an inner ring raceway on an outer peripheral surface, the inner peripheral surface of the outer ring and an inner ring of the inner ring. It includes a step of cutting at least one of the peripheral surface using the total cutting tool of the present invention.
上述の様に構成する本発明の総型切削工具によれば、歯部の先端部に溶着や摩耗等の損傷が生じる事の防止を図ると共に、加工中に生じる切りくずを、ワークの環状部の外部に排出し易い総型切削工具の構造を実現できる。
即ち、本発明の場合、給油通路を、総型切削工具の工具本体に形成すると共に、この給油通路の軸方向一端側の開口部を、この工具本体のうち、加工時に、前記ワークの環状部の内側に挿入される部分の軸方向先端側を向いた面に開口させている。この為、この給油通路から噴射された切削油が、前述の従来方法の場合と比べて、前記歯部の先端部にまで行き渡り易い。この結果、切削加工中に、この歯部の先端部が高温になる事を防止して、当該部分に溶着や摩耗等の損傷が生じる事の防止を図れる。
又、例えば、軸方向一端部が底部（この他、チャック装置の端面等の様にワークとは別体に設けられた蓋体）により塞がれた状態のワークの環状部に切削加工を施す際、前記給油通路の軸方向一端側の開口部から噴射した切削油は、前記底部によりこの噴射の方向と逆方向（ワークの環状部の軸方向開口部に向かう方向）の流れを惹起される。この為、加工中に生じた切りくずが、前記ワークの環状部の外部に排出され易くなる。この結果、加工後に、前記切りくずを取り除く為の除去作業が不要、或いは除去作業を行う場合でも簡単な作業で済む様になり、作業効率の向上を図れる。更に、前記切りくずにより、加工後の前記ワークの環状部が傷つく事の防止を図れる。
According to the overall cutting tool of the present invention configured as described above, it is possible to prevent damage such as welding and wear from occurring at the tip of the tooth portion, and to remove chips generated during processing from the annular portion of the workpiece. It is possible to realize a structure of a total cutting tool that can be easily discharged to the outside.
That is, in the case of the present invention, the oil supply passage is formed in the tool main body of the total cutting tool, and the opening on one end side in the axial direction of the oil supply passage is formed in the annular portion of the workpiece during machining of the tool main body. Is opened on the surface facing the front end side in the axial direction of the portion to be inserted inside. For this reason, the cutting oil injected from the oil supply passage is more likely to reach the tip of the tooth portion as compared with the conventional method described above. As a result, it is possible to prevent the tip portion of the tooth portion from becoming high temperature during the cutting process, and to prevent the portion from being damaged such as welding or wear.
Further, for example, the annular portion of the workpiece in which one end portion in the axial direction is closed by the bottom portion (in addition, a lid provided separately from the workpiece such as the end face of the chuck device) is cut. At this time, the cutting oil sprayed from the opening on one end side in the axial direction of the oil supply passage causes a flow in a direction opposite to the direction of the injection (a direction toward the axial opening of the annular portion of the workpiece) by the bottom portion. . For this reason, chips generated during processing are easily discharged to the outside of the annular portion of the workpiece. As a result, the removal work for removing the chips after processing is unnecessary, or even if the removal work is performed, simple work can be performed, and work efficiency can be improved. Furthermore, it is possible to prevent the annular portion of the workpiece after processing from being damaged by the chips.
［実施の形態の第１例］
本発明の実施の形態の第１例に就いて、図１、２により説明する。本例の総型切削工具１０ａは、ワークの環状部の内周面を、所望の形状に加工する為の切削加工に使用されるものである。具体的には、例えば、図８に示す様な玉軸受１を構成する外輪２の内周面に、外輪軌道４、１対の肩部５ａ、５ｂ、及び１対のシール係止溝６ａ、６ｂを形成する為の切削加工に使用される。以下、本例の総型切削工具１０ａの構造に就いて説明し、その後、本例の総型切削工具１０ａを、工作機械（例えば旋盤等）に組み込んで行う切削加工方法に就いて説明する。
[First example of embodiment]
A first example of the embodiment of the present invention will be described with reference to FIGS. The general cutting tool 10a of this example is used for cutting for processing the inner peripheral surface of the annular portion of the workpiece into a desired shape. Specifically, for example, an outer ring raceway 4, a pair of shoulder portions 5a and 5b, and a pair of seal locking grooves 6a, on the inner peripheral surface of the outer ring 2 constituting the ball bearing 1 as shown in FIG. It is used for cutting to form 6b. Hereinafter, the structure of the general cutting tool 10a of this example will be described, and then a cutting method performed by incorporating the general cutting tool 10a of this example into a machine tool (for example, a lathe) will be described.
本例の総型切削工具１０ａは、前記ワークの環状部の内周面に前記外輪軌道４、前記両肩部５ａ、５ｂ、及び前記両シール係止溝６ａ、６ｂを形成して前記外輪２を造る為の切削加工に使用されるものであり、例えば、高速度鋼（ＳＫＨ５１、ハイス鋼）、超硬合金等により造られている。
この様な総型切削工具１０ａは、工具本体１４と、歯部１５とを備えている。
このうちの工具本体１４は、基端側軸部１６と、先端側軸部１７とから成る。
この基端側軸部１６は、略円柱状に形成されている。
前記先端側軸部１７は、この基端側軸部１６よりも小径であり、この基端側軸部１６の軸方向一端面（図１の表面、図２の左端面）の略中央部から、軸方向一方（図１の表側、図２の左側）に突出した状態で形成されている。この様な先端側軸部１７の形状は、後述する歯部１５を形成する事ができる形状であれば、特に限定されるものではなく、剛性等を考慮して適宜決定する。本例の場合、前記先端側軸部１７は、先端に向かうほど細くなる（断面積が小さくなる）状態で形成されている。又、前記先端側軸部１７の先端面は、軸方向一方から見た形状が、略半円状（勾玉状）の平坦面１８となっている。
The total cutting tool 10a of this example is formed with the outer ring raceway 4, the shoulder parts 5a, 5b, and the seal locking grooves 6a, 6b on the inner peripheral surface of the annular part of the work, and the outer ring 2 For example, it is made of high-speed steel (SKH51, high-speed steel), cemented carbide or the like.
Such an overall cutting tool 10 a includes a tool body 14 and a tooth portion 15.
Of these, the tool body 14 includes a proximal end side shaft portion 16 and a distal end side shaft portion 17.
The proximal end side shaft portion 16 is formed in a substantially cylindrical shape.
The distal end side shaft portion 17 has a smaller diameter than the proximal end side shaft portion 16, and from a substantially central portion of one axial end surface (the surface in FIG. 1, the left end surface in FIG. 2) of the proximal end side shaft portion 16. It is formed in a state protruding in one axial direction (the front side in FIG. 1 and the left side in FIG. 2). The shape of the distal end side shaft portion 17 is not particularly limited as long as it is a shape capable of forming a tooth portion 15 described later, and is appropriately determined in consideration of rigidity and the like. In the case of this example, the distal end side shaft portion 17 is formed in a state of becoming thinner (a cross-sectional area becomes smaller) toward the distal end. Further, the distal end surface of the distal end side shaft portion 17 is a flat surface 18 having a substantially semicircular shape (tiltball shape) when viewed from one axial direction.
又、前記歯部１５は、前記先端側軸部１７の先端寄り部分の円周方向一部に直接形成されている。具体的には、前記歯部１５は、前記先端側軸部１７のうち、円周方向に関して、前記平坦面１８の円弧部１９の円周方向一端縁（図１の反時計方向側端縁であって、図１にＹで示す位置）と整合する位置（軸方向に重畳する位置）に形成されている。この様な歯部１５は、加工中に、この歯部１５を、回転（図１の時計方向に回転）している前記ワークの環状部の内周面に当接させて、この内周面を削る事により、この歯部１５の歯先の輪郭形状｛先端側軸部１７の中心軸を含む仮想平面に関する断面形状｝を、前記ワークの環状部の内周面に写す様にして形成する為のものである。 Further, the tooth portion 15 is directly formed at a part in the circumferential direction of a portion closer to the distal end of the distal end side shaft portion 17. Specifically, the tooth portion 15 has one circumferential edge of the circular arc portion 19 of the flat surface 18 in the circumferential direction of the distal end side shaft portion 17 (on the counterclockwise side edge in FIG. 1). Therefore, it is formed at a position (position overlapping in the axial direction) that is aligned with the position indicated by Y in FIG. Such a tooth portion 15 is brought into contact with the inner peripheral surface of the annular portion of the workpiece rotating (rotating in the clockwise direction in FIG. 1) during processing. By cutting, the contour shape of the tooth tip of the tooth portion 15 (cross-sectional shape relating to the virtual plane including the central axis of the tip side shaft portion 17) is copied to the inner peripheral surface of the annular portion of the workpiece. Is for the purpose.
本例の場合、この歯部１５の歯先の輪郭形状は、前記外輪２の内周面の断面形状に合致する形状（沿う形状）を有している。具体的には、本例の場合、前記歯部１５の歯先の軸方向両端寄り部分には、前記外輪２の両シール係止溝６ａ、６ｂを形成する為の、１対のシール溝形成部２０ａ、２０ｂが設けられている。
又、前記歯部１５の歯先の軸方向中央部には、前記外輪２の外輪軌道４を形成する為の、軌道形成部２１が設けられている。
更に、前記軌道形成部２１の軸方向両端縁と、前記両シール溝形成部２０ａ、２０ｂの軸方向中央側端縁との間には、前記外輪２の肩部５ａ、５ｂを形成する為の１対の肩部形成部２２ａ、２２ｂが設けられている。
尚、本例の場合、前記先端側軸部１７の外周面のうちの、円周方向に関して前記円弧部１９と整合する位置（軸方向に関して重畳する位置）、且つ、軸方向に関して前記歯部１５の歯先と整合する位置（円周方向に関して重畳する位置）に、後述する再研磨により歯部の歯先となる、歯部予備部（図示省略）が形成されている。
In the case of this example, the contour shape of the tooth tip of the tooth portion 15 has a shape (a shape along the cross section) of the inner peripheral surface of the outer ring 2. Specifically, in the case of this example, a pair of seal grooves for forming both seal locking grooves 6a and 6b of the outer ring 2 are formed near the both axial ends of the tooth tip of the tooth portion 15. Portions 20a and 20b are provided.
Further, a track forming portion 21 for forming the outer ring raceway 4 of the outer ring 2 is provided at the axial center portion of the tooth tip of the tooth portion 15.
Further, shoulders 5a and 5b of the outer ring 2 are formed between both end edges in the axial direction of the track forming part 21 and the central edge in the axial direction of the seal groove forming parts 20a and 20b. A pair of shoulder forming portions 22a and 22b is provided.
In the case of this example, of the outer peripheral surface of the distal end side shaft portion 17, a position that aligns with the arc portion 19 in the circumferential direction (a position that overlaps in the axial direction) and the tooth portion 15 in the axial direction. A tooth preliminary portion (not shown) that becomes a tooth tip of the tooth portion by re-polishing which will be described later is formed at a position aligned with the tooth tip (position overlapping with the circumferential direction).
特に、本例の総型切削工具１０ａの場合、前記工具本体１４に、軸方向一端部が前記平坦面１８に開口し、軸方向他端部が前記基端側軸部１６の軸方向他端面に開口した状態で、軸方向に長い給油通路２３が形成されている。具体的には、この給油通路２３は、軸方向に直交する仮想平面に関する断面形状が円形である。尚、給油通路の、軸方向に直交する仮想平面に関する断面形状は、特に限定されるものではない。例えば、この断面形状を、楕円形状、矩形状等に形成する事もできる。又、前記給油通路２３の軸方向一端側の開口部は、前記平坦面１８のうちの、円周方向に関して前記歯部１５と反対側半部に形成されている。尚、円周方向に関して反対側半部とは、前記平坦面１８の円弧部１９の円周方向に関する中心Ｃ１９と、この円弧部１９を含む曲率中心（仮想円の中心）Ｏ１９とを結んだ線分ｄ１９に関して、前記歯部１５と反対側半部（図１の左側半部）の事を言う。 In particular, in the case of the total cutting tool 10a of this example, one end portion in the axial direction is opened in the flat surface 18 in the tool body 14, and the other end portion in the axial direction is the other end surface in the axial direction of the base end side shaft portion 16. A long oil supply passage 23 is formed in the axial direction. Specifically, the oil supply passage 23 has a circular cross-sectional shape with respect to a virtual plane orthogonal to the axial direction. In addition, the cross-sectional shape regarding the virtual plane orthogonal to the axial direction of the oil supply passage is not particularly limited. For example, the cross-sectional shape can be formed into an elliptical shape, a rectangular shape, or the like. Further, an opening on one end side in the axial direction of the oil supply passage 23 is formed in the half of the flat surface 18 opposite to the tooth portion 15 in the circumferential direction. The opposite half portion in the circumferential direction connects the center C 19 in the circumferential direction of the arc portion 19 of the flat surface 18 and the center of curvature (the center of the virtual circle) O 19 including the arc portion 19. With respect to the ellipse segment d 19, it refers to the half (the left half in FIG. 1) opposite to the tooth portion 15.
次に、上述の様な構成を有する本例の総型切削工具１０ａを工作機械（図示省略）に組み込んで行う切削加工方法に就いて説明する。尚、本例の切削加工方法は、少なくとも一部に環状部を有するワークの、この環状部の内周面に、前記外輪２の外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成する為の切削加工方法である。尚、前記ワークの環状部の内周面に形成する形状は、適宜選択する事ができる。この際には、前記歯部１５の歯先の輪郭形状（中心軸を含む仮想平面に関する断面形状）を、前記ワークの環状部の内周面に形成する形状に合わせて適宜変更する。 Next, a description will be given of a cutting method performed by incorporating the total cutting tool 10a of this example having the above-described configuration into a machine tool (not shown). In the cutting method of this example, the outer ring raceway 4, the shoulders 5a, 5b, and both seals of the outer ring 2 are formed on the inner peripheral surface of the annular part of the work having at least a part of the annular part. This is a cutting method for forming the grooves 6a and 6b. In addition, the shape formed in the internal peripheral surface of the annular part of the said workpiece | work can be selected suitably. At this time, the contour shape of the tooth tip of the tooth portion 15 (cross-sectional shape related to the virtual plane including the central axis) is appropriately changed according to the shape formed on the inner peripheral surface of the annular portion of the workpiece.
本例の切削加工方法は、円柱状の素材の軸方向他端部に円筒状部分２５を形成する事により造られたワーク２４を使用する。尚、本例の切削加工方法の場合、この円筒状部分２５が、特許請求の範囲に記載した環状部に相当する。
前記円筒状部分２５は、前工程の段階で形成されたものである。この様な円筒状部分２５は、軸方向一端面が底部２６により塞がれている。又、この底部２６の軸方向他側面（図２の右側面）は、径方向内側に向かうほど軸方向一方に傾斜した円錐面状に形成されている。尚、この底部２６の軸方向他側面の形状は、適宜変更する事も可能である。例えば、径方向内側に向かうほど軸方向一方に凹んだ部分球面状とする事もできる。又、軸方向から見た形状が円形の平坦面と、この平坦面の径方向外方に形成された、径方向内側に向かうほど軸方向一方に傾斜した部分円錐面（又は、軸方向一方に凹んだ部分球面）とにより構成する事もできる。即ち、後述する様な切削油の流れを惹起し易い形状を適宜採用する事ができる。
The cutting method of this example uses a workpiece 24 formed by forming a cylindrical portion 25 at the other axial end of a columnar material. In the case of the cutting method of this example, the cylindrical portion 25 corresponds to the annular portion described in the claims.
The cylindrical portion 25 is formed at the stage of the previous process. In such a cylindrical portion 25, one end surface in the axial direction is closed by the bottom portion 26. Further, the other axial side surface (the right side surface in FIG. 2) of the bottom portion 26 is formed in a conical surface shape that is inclined in one axial direction toward the inner side in the radial direction. The shape of the other side surface in the axial direction of the bottom portion 26 can be changed as appropriate. For example, it may be a partial spherical shape that is recessed in one axial direction as it goes radially inward. In addition, a flat surface having a circular shape when viewed from the axial direction, and a partial conical surface that is formed radially outward of the flat surface and is inclined in one axial direction toward the radially inner side (or in one axial direction) It can also be constituted by a concave partial spherical surface). That is, it is possible to appropriately adopt a shape that will easily cause the flow of cutting oil as will be described later.
前記ワーク２４の軸方向一端部は、工作機械の主軸（図示省略）に、チャック装置等を介して固定されている。
又、前記円筒状部分２５の軸方向他方側には、前記総型切削工具１０ａが配置されている。この様な総型切削工具１０ａは、前記基端側軸部１６の基端部を、前記工作機械の一部に固定ブッシュ９を介して支持固定されている。
One end of the work 24 in the axial direction is fixed to a spindle (not shown) of a machine tool via a chuck device or the like.
The total cutting tool 10a is disposed on the other axial side of the cylindrical portion 25. In such a general cutting tool 10a, the base end portion of the base end side shaft portion 16 is supported and fixed to a part of the machine tool via a fixing bush 9.
切削加工を行う際には、図２（ａ）に示す様に、前記ワーク２４（円筒状部分２５）を回転させた状態で、前記総型切削工具１０ａを、この総型切削工具１０ａの軸方向先端部（軸方向一端部）が、前記円筒状部分２５の内径側に位置するまで軸方向一方に移動させる。この際、前記総型切削工具１０ａは回転していない。又、この状態で、前記給油通路２３の軸方向一端側の開口部から切削油を、図２に矢印α３で示す様に噴射しておく。本例の場合、前記給油通路２３の軸方向一端側の開口部から噴射された切削油の一部は、前記底部２６の軸方向他側面に沿う様に、この底部２６の径方向に移動し、前記円筒状部分２５の内周面に沿いながら、この円筒状部分２５の軸方向他端側の開口部から外部に流出する。そして、前記総型切削工具１０ａを径方向外方（図２の下方）に変位させて（切り込ませて）、前記歯部１１を前記円筒状部分２５の内周面に当接させる。すると、この円筒状部分２５の内周面が、前記歯部１１の歯先の輪郭形状（先端側軸部１７の中心軸を含む仮想平面に関する断面形状）に沿う様な形状に削られて、前記外輪軌道４、前記両肩部５ａ、５ｂ、及び前記両シール係止溝６ａ、６ｂが形成される。
尚、本例の総型切削工具１０ａは、加工中（切削中）は、径方向にのみ変位する。この総型切削工具１０ａを軸方向に変位させるのは、前述した様に、この総型切削工具１０ａの軸方向先端部を、前記円筒状部分２５の内径側に位置させる際と、加工後に、総型切削工具１０ａの軸方向先端部を、前記円筒状部分２５の内径側から退避させる際のみである。
切削加工が終了した後、加工後の円筒状部分２５を図２（ｂ）にγで示す位置で切り落として、次工程に進む。
When performing the cutting process, as shown in FIG. 2A, in the state where the workpiece 24 (cylindrical portion 25) is rotated, the total cutting tool 10a is moved to the axis of the total cutting tool 10a. The directional tip (one axial end) is moved to one axial direction until it is located on the inner diameter side of the cylindrical portion 25. At this time, the total cutting tool 10a is not rotating. In this state, the cutting oil from the opening of the axial end of the oil supply passage 23, keep the injection as indicated by the arrow alpha 3 in FIG. In the case of this example, a part of the cutting oil sprayed from the opening on one end side in the axial direction of the oil supply passage 23 moves in the radial direction of the bottom portion 26 along the other axial side surface of the bottom portion 26. While flowing along the inner peripheral surface of the cylindrical portion 25, the cylindrical portion 25 flows out from the opening on the other axial end side. Then, the total cutting tool 10a is displaced (cut out) radially outward (downward in FIG. 2), and the tooth portion 11 is brought into contact with the inner peripheral surface of the cylindrical portion 25. Then, the inner peripheral surface of the cylindrical portion 25 is cut into a shape along the contour shape of the tooth tip of the tooth portion 11 (cross-sectional shape related to a virtual plane including the central axis of the distal end side shaft portion 17), The outer ring raceway 4, the shoulder portions 5a, 5b, and the seal locking grooves 6a, 6b are formed.
Note that the total cutting tool 10a of this example is displaced only in the radial direction during processing (cutting). As described above, the total cutting tool 10a is displaced in the axial direction when the axial tip portion of the total cutting tool 10a is positioned on the inner diameter side of the cylindrical portion 25, and after processing, This is only when the front end in the axial direction of the total cutting tool 10 a is retracted from the inner diameter side of the cylindrical portion 25.
After the cutting process is completed, the processed cylindrical portion 25 is cut off at a position indicated by γ in FIG. 2B, and the process proceeds to the next step.
上述の様に構成する本例の総型切削工具１０ａによれば、上述した様な切削加工方法を実施する際、前記歯部１５の先端部に溶着や摩耗等の損傷が生じる事の防止を図ると共に、加工中に生じる切りくずを、前記円筒状部分２５の外部に排出し易い構造を実現できる。
即ち、本例の場合、前記総型切削工具１０ａの工具本体１４に、軸方向一端側の開口部が、この工具本体１４の平坦面１８に開口した前記給油通路２３が形成されている。この為、この給油通路２３から噴射された切削油が、前述の従来から行われている切削加工方法の場合と比べて、前記歯部１５の先端部にまで行き渡り易い。この結果、切削加工中に、この歯部１５の先端部が高温になる事を防止して、当該部分に溶着や摩耗等の損傷が生じる事の防止を図れる。
According to the overall cutting tool 10a of the present example configured as described above, when the cutting method as described above is performed, it is possible to prevent the tip portion of the tooth portion 15 from being damaged such as welding or wear. In addition, it is possible to realize a structure in which chips generated during processing can be easily discharged to the outside of the cylindrical portion 25.
That is, in the case of this example, the oil supply passage 23 is formed in the tool main body 14 of the total cutting tool 10 a with an opening on one end side in the axial direction and opened on the flat surface 18 of the tool main body 14. For this reason, the cutting oil sprayed from the oil supply passage 23 can easily reach the tip of the tooth portion 15 as compared with the conventional cutting method. As a result, it is possible to prevent the tip portion of the tooth portion 15 from becoming a high temperature during the cutting process, and prevent the portion from being damaged such as welding or wear.
又、前述した切削加工方法の様に、軸方向一端部（軸方向奥端部）が前記底部２６により塞がれた円筒状部分２５に切削加工を施す際、前記給油通路２３の軸方向一端側の開口部から軸方向一方に噴射した切削油は、前記底部２６の軸方向他側面に案内されて、この噴射の方向と逆方向（軸方向他方であって、円筒状部分２５の開口部に向かう方向）の流れを惹起される。この為、加工中に生じた切りくずが、前記円筒状部分２５の外部に排出され易くなる。この結果、加工後に、前記切りくずを取り除く為の除去作業が不要となるか、或いは除去作業を行う場合でも簡単な作業で済む様になり、作業効率の向上を図れる。更に、前記切りくずにより、加工後の前記円筒状部分２５が傷つく事の防止を図れる。 Further, when the cylindrical portion 25 whose one end in the axial direction (back end in the axial direction) is closed by the bottom portion 26 is cut as in the above-described cutting method, one end in the axial direction of the oil supply passage 23 is formed. The cutting oil sprayed in one axial direction from the opening on the side is guided to the other side surface in the axial direction of the bottom portion 26, and is opposite to the direction of this spraying (the other in the axial direction, the opening of the cylindrical portion 25. The flow in the direction toward) is triggered. For this reason, chips generated during processing are easily discharged to the outside of the cylindrical portion 25. As a result, after the machining, the removal work for removing the chips becomes unnecessary, or even when the removal work is performed, a simple work can be performed, and the work efficiency can be improved. Further, it is possible to prevent the cylindrical portion 25 after processing from being damaged by the chips.
特に本例の場合、前記底部２６の軸方向他側面が、径方向内側に向かうほど軸方向一方に傾斜した円錐面状に形成されている。この為、前記給油通路２３の軸方向一端側の開口部から噴射した切削油を、前記底部２６の軸方向他側面に沿う様に、この底部２６の径方向に移動させる事ができる。従って、前記切削油を、前記歯部１５の先端部｛図２（ｂ）にβで示す部分｝に供給し易くできる。 Particularly in the case of this example, the other side surface in the axial direction of the bottom portion 26 is formed in a conical surface shape that inclines in one axial direction as it goes radially inward. For this reason, the cutting oil sprayed from the opening on one axial end side of the oil supply passage 23 can be moved in the radial direction of the bottom portion 26 along the other axial side surface of the bottom portion 26. Therefore, the cutting oil can be easily supplied to the tip portion of the tooth portion 15 (the portion indicated by β in FIG. 2B).
又、本例の場合、前記給油通路２３の軸方向一端側の開口部が、前記平坦面１８のうちの、円周方向に関して前記歯部１５と反対側半部に形成されている。この為、前記給油通路２３の軸方向一端側の開口部と、前記歯部１５との間に、複数回の再研磨を可能とするだけの余裕代を確保する事ができる。言い換えれば、前記平坦面１８の円弧部１９のうちの、給油通路２３の軸方向一端側の開口部と、前記歯部１５との間に存在する部分の周方向に関する長さＬ１９を大きく確保できる。この結果、前記歯部１５を再研磨できる回数を十分に確保する事ができて、加工コストの低減を図れる。
尚、再研磨とは、前記歯部１５が損傷したり、切れ味が悪くなったりした場合に、図１に二点鎖線Ｘで示す様に、前記歯部１５を研磨して再利用する事を言う。従って、この再研磨を繰り返すほど、前記歯部１５の位置は、前記軸方向一端側の開口部に近付く。
In the case of this example, an opening on one end side in the axial direction of the oil supply passage 23 is formed in a half of the flat surface 18 opposite to the tooth portion 15 in the circumferential direction. For this reason, it is possible to secure a margin for allowing re-polishing a plurality of times between the opening portion on one end side in the axial direction of the oil supply passage 23 and the tooth portion 15. In other words, of the arc portion 19 of the flat surface 18, the circumferential length L 19 of the portion existing between the opening portion on one end side in the axial direction of the oil supply passage 23 and the tooth portion 15 is ensured. it can. As a result, a sufficient number of times that the tooth portion 15 can be re-polished can be secured, and the processing cost can be reduced.
The re-polishing means that the tooth portion 15 is polished and reused as indicated by a two-dot chain line X in FIG. 1 when the tooth portion 15 is damaged or the sharpness is deteriorated. say. Therefore, as this re-polishing is repeated, the position of the tooth portion 15 approaches the opening on the one end side in the axial direction.
［実施の形態の第２例］
本発明の実施の形態の第２例に就いて、図３により説明する。本例の総型切削工具１０ｂの場合、給油通路２３ａの軸方向一端側の開口部を、先端側軸部１７の平坦面１８のうちの、円周方向に関して歯部１５と反対側端部からこの平坦面１８から径方向外方に外れた位置に掛けての部分に形成している。この為に、本例の場合、前記給油通路２３ａのうち、工具本体１４の基端側軸部１６に形成された部分は、軸方向両端部のみが開口した貫通孔状に形成されている。一方、前記給油通路２３ａのうち、工具本体１４の先端側軸部１７に形成された部分は、軸方向両端部及び径方向外方が開口した凹溝状に形成されている。
[Second Example of Embodiment]
A second example of the embodiment of the present invention will be described with reference to FIG. In the case of the total cutting tool 10b of the present example, the opening on the one end side in the axial direction of the oil supply passage 23a extends from the end on the opposite side to the tooth portion 15 in the circumferential direction of the flat surface 18 of the tip end side shaft portion 17. The flat surface 18 is formed in a portion that is hung at a position deviated radially outward. For this reason, in the case of this example, the part formed in the base end side axial part 16 of the tool main body 14 among the said oil supply path 23a is formed in the through-hole shape which only the axial direction both ends opened. On the other hand, the part formed in the front end side shaft portion 17 of the tool main body 14 in the oil supply passage 23a is formed in a concave groove shape that is open at both ends in the axial direction and radially outward.
この様な本例の場合、この平坦面１８の円弧部１９のうちの、前記給油通路２３ａの軸方向一端側の開口部と、前記歯部１５との間に存在する部分の円周方向に関する長さを、前述した実施の形態の第１例の場合よりも大きく確保できる。この結果、前記歯部１５を再研磨できる回数を十分に確保する事ができて、加工コストの低減を図れる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In the case of this example, of the circular arc portion 19 of the flat surface 18, the circumferential direction of the portion existing between the opening portion on one end side in the axial direction of the oil supply passage 23 a and the tooth portion 15 is concerned. The length can be secured larger than in the case of the first example of the embodiment described above. As a result, a sufficient number of times that the tooth portion 15 can be re-polished can be secured, and the processing cost can be reduced. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
［実施の形態の第３例］
本発明の実施の形態の第３例に就いて、図４により説明する。本例の総型切削工具１０ｃの場合、工具本体１４を構成する基端側軸部１６と、先端側軸部１７の外周面のうち、円周方向に関して歯部１５が形成された位置Ｙと略反対側となる部分に、軸方向両端及び径方向外方が開口した給油凹溝２７を形成している。この様な給油凹溝２７は、前記先端側軸部１７の中心軸（軸方向）に直交する仮想平面に関する断面形状（軸方向から見た形状）が四角形状に形成されている。本例の場合、この給油凹溝２７が、特許請求の範囲に記載した給油通路に相当する。尚、この給油凹溝２７の軸方向他端部は、前記基端側軸部１６の軸方向他端面に開口している。
[Third example of embodiment]
A third example of the embodiment of the present invention will be described with reference to FIG. In the case of the total cutting tool 10c of this example, the position Y where the tooth portion 15 is formed in the circumferential direction on the outer peripheral surface of the base end side shaft portion 16 and the distal end side shaft portion 17 constituting the tool body 14; An oil supply groove 27 having openings at both ends in the axial direction and radially outward is formed in a portion on the substantially opposite side. Such an oil supply concave groove 27 has a quadrangular cross-sectional shape (a shape viewed from the axial direction) with respect to a virtual plane orthogonal to the central axis (axial direction) of the distal end side shaft portion 17. In the case of this example, the oil supply groove 27 corresponds to the oil supply passage described in the claims. Note that the other axial end portion of the oil supply groove 27 is open to the other axial end surface of the base end side shaft portion 16.
この様な構成を有する本例の場合も、前述した実施の形態の第２例と同様に、平坦面１８の円弧部１９のうちの、前記給油凹溝２７の軸方向一端側の開口部と、前記歯部１５との間に存在する部分の円周方向に関する長さを、前述した実施の形態の第１例の場合よりも大きく確保できる。この結果、前記歯部１５を再研磨できる回数を十分に確保する事ができて、加工コストの低減を図れる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 Also in the case of this example having such a configuration, as in the second example of the above-described embodiment, the opening on the one end side in the axial direction of the oil supply groove 27 in the arc portion 19 of the flat surface 18 The length in the circumferential direction of the portion existing between the tooth portions 15 can be ensured larger than in the first example of the embodiment described above. As a result, a sufficient number of times that the tooth portion 15 can be re-polished can be secured, and the processing cost can be reduced. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
［実施の形態の第４例］
本発明の実施の形態の第４例に就いて、図５により説明する。本例は、工作機械に、前述した実施の形態の第１例〜第３例のうちの何れかの総型切削工具１０ａ、１０ｂ、１０ｃを組み込んで行う切削加工方法の別例を示している。尚、図５の場合には、前述した実施の形態の第１例の総型切削工具１０ａを使用している。又、本例の切削加工方法も、前述した実施の形態の第１例と同様に、環状部材の内周面に、外輪２の外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成する為の切削加工方法である。
[Fourth Example of Embodiment]
A fourth example of the embodiment of the present invention will be described with reference to FIG. This example shows another example of the cutting method performed by incorporating any one of the overall cutting tools 10a, 10b, and 10c in the first to third examples of the above-described embodiment into a machine tool. . In the case of FIG. 5, the total cutting tool 10a of the first example of the embodiment described above is used. Further, in the cutting method of this example, as in the first example of the embodiment described above, the outer ring raceway 4, the shoulders 5a, 5b, and both seals of the outer ring 2 are provided on the inner peripheral surface of the annular member. This is a cutting method for forming the grooves 6a and 6b.
この様な本例の切削加工方法では、前記外輪２よりも軸方向に関する寸法が大きい円筒状のワーク２８の軸方向他端側半部が、特許請求の範囲に記載した環状部に相当する。この様なワーク２８は、軸方向の両端部が開口している。そこで、本例の場合、このワーク２８の軸方向一端側の開口部を、このワーク２８を工作機械の主軸（図示省略）に支持固定する為のチャック装置の一部を構成する蓋体２９により塞いでいる。尚、蓋体の構造は、前記円筒状素材２８の軸方向一端部を塞げる形状であれば、特に限定されるものではない。又、前記蓋体２９の軸方向他側面を、前述した実施の形態の第１例の底部２６の軸方向他側面の様な円錐面状に形成する事もできる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In such a cutting method of the present example, the other half side in the axial direction of the cylindrical workpiece 28 whose dimension in the axial direction is larger than that of the outer ring 2 corresponds to the annular part described in the claims. Such a workpiece 28 is open at both ends in the axial direction. Therefore, in the case of this example, the opening on one end side in the axial direction of the work 28 is supported by a lid 29 constituting a part of a chuck device for supporting and fixing the work 28 to a main shaft (not shown) of the machine tool. It is blocking. The structure of the lid is not particularly limited as long as it has a shape that closes one end of the cylindrical material 28 in the axial direction. Further, the other side surface in the axial direction of the lid body 29 can be formed in a conical surface like the other side surface in the axial direction of the bottom portion 26 of the first example of the embodiment described above. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
［実施の形態の第５例］
本発明の実施の形態の第５例に就いて、図６により説明する。本例は、工作機械に、前述した実施の形態の第１例〜第３例のうちの何れかの総型切削工具１０ａ、１０ｂ、１０ｃを組み込んで行う切削加工方法の別例を示している。尚、図６の場合には、前述した実施の形態の第１例の総型切削工具１０ａを使用している。又、本例の切削加工方法も、前述した実施の形態の第１例と同様に、ワークの環状部の内周面に、外輪２の外輪軌道４、両肩部５ａ、５ｂ、及び両シール係止溝６ａ、６ｂを形成する為の切削加工方法である。
[Fifth Example of Embodiment]
A fifth example of the embodiment of the present invention will be described with reference to FIG. This example shows another example of the cutting method performed by incorporating any one of the overall cutting tools 10a, 10b, and 10c in the first to third examples of the above-described embodiment into a machine tool. . In the case of FIG. 6, the total cutting tool 10a of the first example of the embodiment described above is used. Also, the cutting method of this example is similar to the first example of the above-described embodiment, on the inner peripheral surface of the annular portion of the workpiece, the outer ring raceway 4 of the outer ring 2, both shoulder portions 5a, 5b, and both seals. This is a cutting method for forming the locking grooves 6a and 6b.
この様な本例の切削加工方法の場合、前記外輪２の軸方向に関する長さ寸法と同じ軸方向寸法を有するワーク２８ａが、特許請求の範囲に記載した環状部に相当する。この様なワーク２８ａは、その外周面に、チャック装置の把持部３０を外嵌固定する事により、工作機械の主軸に支持固定されている。この様なワーク２８ａは、軸方向の両端部が開口している。そこで、本例の場合、このワーク２８ａの軸方向一端側の開口部を、蓋体３１により塞いでいる。この蓋体３１は、円筒部３２と、この円筒部３２の軸方向一端部を塞ぐ底部３３とから成る有底円筒状である。この様な蓋体３１は、前記円筒部３２の軸方向他端面（図６の右端面）を、前記ワーク２８ａの軸方向一端面に当接させた状態で、工作機械の一部に支持されている。尚、本例の場合、前記蓋体３１の軸方向他側面は、平坦面状に形成されている。但し、この蓋体３１の軸方向他側面を、前述した実施の形態の第１例の底部２６の軸方向他側面の様な円錐面状に形成する事もできる。その他の構成及び作用・効果は、前述した実施の形態の第１例と同様である。 In such a cutting method of this example, the workpiece 28a having the same axial dimension as the axial dimension of the outer ring 2 corresponds to the annular portion described in the claims. Such a workpiece 28a is supported and fixed to the spindle of the machine tool by externally fixing and fixing the grip portion 30 of the chuck device to the outer peripheral surface thereof. Such a workpiece 28a is open at both ends in the axial direction. Therefore, in the case of this example, the opening on the one end side in the axial direction of the work 28 a is closed by the lid 31. The lid body 31 has a bottomed cylindrical shape including a cylindrical portion 32 and a bottom portion 33 that closes one axial end portion of the cylindrical portion 32. Such a lid 31 is supported by a part of the machine tool with the other axial end surface (the right end surface in FIG. 6) of the cylindrical portion 32 in contact with the one axial end surface of the workpiece 28a. ing. In the case of this example, the other axial side surface of the lid body 31 is formed into a flat surface. However, the other side surface in the axial direction of the lid 31 can be formed in a conical surface shape like the other side surface in the axial direction of the bottom portion 26 of the first example of the embodiment described above. Other configurations, operations, and effects are the same as those of the first example of the embodiment described above.
［実施の形態の第６例］
本発明の実施の形態の第６例に就いて、図７により説明する。本例の総型切削工具１０ｄは、図８に示す様な玉軸受１を構成する内輪３の内周面の軸方向両端部に、１対の面取り部３４ａ、３４ｂを形成する為の切削加工に使用される。
具体的には、本例の総型切削工具１０ｄを構成する歯部１５ａは、軸方向両端部に、前記両面取り部３４ａ、３４ｂを形成する為の、１対の面取り形成部３５ａ、３５ｂが形成されている。又、前記歯部１５ａのうち、軸方向に関してこれら両面取り形成部３５ａ、３５ｂの間部分は、軸方向に関して外径寸法が変わらない平坦部３６が形成されている。尚、加工の際には、必要に応じて、この平坦部３６により前記内輪３の内周面のうちの前記両面取り部３４ａ、３４ｂの間部分を切削する。
以上の様な総型切削工具１０ｄを使用して行う切削加工法方法は、前述した実施の形態の第１例の場合とほぼ同様であるので説明は省略する。
その他の構成及び作用・効果に関しても、前述した実施の形態の第１例と同様である。
[Sixth Example of Embodiment]
A sixth example of the embodiment of the present invention will be described with reference to FIG. The total cutting tool 10d of this example is a cutting process for forming a pair of chamfered portions 34a and 34b at both axial ends of the inner peripheral surface of the inner ring 3 constituting the ball bearing 1 as shown in FIG. Used for.
Specifically, the tooth portion 15a constituting the total cutting tool 10d of the present example includes a pair of chamfer forming portions 35a and 35b for forming the double-side chamfered portions 34a and 34b at both axial end portions. Is formed. Also, among the tooth portions 15a, both the faces up forming portion 35a in the axial direction, between portions of 35b, the flat portion 36 of the outer diameter does not change with respect to the axial direction is formed. In the processing, if necessary, the flat portion 36 cuts a portion of the inner peripheral surface of the inner ring 3 between the double-sided portions 34a and 34b.
Since the cutting method method using the general cutting tool 10d as described above is substantially the same as that in the first example of the above-described embodiment, the description thereof is omitted.
Other configurations and operations / effects are also the same as in the first example of the embodiment described above.
前述した実施の形態の各例に記載した切削加工方法に関する発明を実施する場合には、前述した実施の形態の各例の総型切削構造を適宜使用する事ができる。
又、本発明の総型切削工具、及びこの総型切削工具を使用した切削加工方法の対象は、前述した実施の形態の各例に記載した玉軸受の外輪、内輪に限らず、各種環状部材を対象とする事ができる。
又、本発明の総型切削工具を実施する場合には、給油通路の一端側開口部を、工具本体の先端面以外の部分に形成する事もできる。具体的には、例えば、この工具本体のうち、加工時に、ワークの環状部の内側に配置される部分の、この工具本体の先端面よりも軸方向他方側に形成された、軸方向先端側を向いた面に形成する事もできる。
更に、前述した実施の形態の各例の総型切削工具は、歯部を、工具本体に直接形成する構成を採用している。但し、本発明を実施する場合には、別体に設けた歯部を、工具本体に結合固定する構成を採用する事もできる。
When carrying out the invention relating to the cutting method described in each example of the above-described embodiment, the total cutting structure of each example of the above-described embodiment can be used as appropriate.
The object of the general cutting tool of the present invention and the cutting method using the general cutting tool is not limited to the outer ring and the inner ring of the ball bearing described in each example of the embodiment described above, but various annular members. Can be targeted.
Moreover, when implementing the total cutting tool of this invention, the one end side opening part of an oil supply channel | path can also be formed in parts other than the front end surface of a tool main body. Specifically, for example, an axial tip side formed on the other side in the axial direction from the tip surface of the tool body of a portion of the tool body that is disposed inside the annular portion of the workpiece during processing. It can also be formed on the side facing.
Furthermore, the total type cutting tool of each example of embodiment mentioned above employ | adopts the structure which forms a tooth | gear part directly in a tool main body. However, when implementing this invention, the structure which couple | bonds and fixes the tooth | gear part provided separately to a tool main body can also be employ | adopted.
１ 玉軸受
２ 外輪
３ 内輪
４ 外輪軌道
５ａ、５ｂ 肩部
６ａ、６ｂ シール係止溝
７ ワーク
８ 円筒状部分
９ 固定ブッシュ
１０、１０ａ、１０ｂ、１０ｃ、１０ｄ 総型切削工具
１１ 歯部
１２ 給油ノズル
１３ 給油孔
１４ 工具本体
１５、１５ａ 歯部
１６ 基端側軸部
１７ 先端側軸部
１８ 平坦面
１９、１９ａ 円弧部
２０ａ、２０ｂ シール溝形成部
２１ 軌道形成部
２２ａ、２２ｂ 肩部形成部
２３、２３ａ 給油通路
２４ ワーク
２５ 円筒状部分
２６ 底部
２７ 給油凹溝
２８、２８ａ ワーク
２９ 蓋体
３０ 把持部
３１ 蓋体
３２ 円筒部
３３ 底部
３４ａ、３４ｂ 面取り部
３５ａ、３５ｂ 面取り形成部
３６ 平坦部
DESCRIPTION OF SYMBOLS 1 Ball bearing 2 Outer ring 3 Inner ring 4 Outer ring raceway 5a, 5b Shoulder part 6a, 6b Seal locking groove 7 Work piece 8 Cylindrical part 9 Fixed bush 10, 10a, 10b, 10c, 10d Total cutting tool 11 Tooth part 12 Oil supply nozzle DESCRIPTION OF SYMBOLS 13 Oil supply hole 14 Tool body 15, 15a Tooth part 16 Base end side shaft part 17 Front end side shaft part 18 Flat surface 19, 19a Arc part 20a, 20b Seal groove formation part 21 Track formation part 22a, 22b Shoulder part formation part 23, 23a Oil supply passage 24 Work piece 25 Cylindrical part 26 Bottom part 27 Oil supply groove 28, 28a Work piece 29 Cover body 30 Holding part 31 Lid body 32 Cylindrical part 33 Bottom part 34a, 34b Chamfer part 35a, 35b Chamfer forming part 36 Flat part
Claims (8)
軸状の工具本体と、歯部とを備え、
このうちの工具本体は、加工時に、少なくとも軸方向先端部が前記環状部の内側に挿入されるものであり、
前記歯部は、前記工具本体の軸方向先端部に、この工具本体と一体又は別体に設けられており、前記環状部の加工完了後の内周面の断面形状に合致する歯先形状を有しており、
前記工具本体に、軸方向一端側の開口部が、加工時に、この工具本体のうちの前記環状部の内側に挿入される部分の軸方向先端側を向いた面に開口しており、切削油を前記歯部に供給する為の給油通路が形成されている総型切削工具。 Rotates the word click having an annular portion at least in part, while preventing rotation of itself and, without axial displacement relative to the workpiece is subjected to cutting on the inner peripheral surface of the annular portion For
It has a shaft-shaped tool body and teeth,
Of these, the tool body is inserted into the annular part at least in the axial direction at the time of processing,
The tooth portion is provided at the tip end portion in the axial direction of the tool main body integrally or separately from the tool main body, and has a tooth tip shape that matches the cross-sectional shape of the inner peripheral surface after the processing of the annular portion is completed. Have
An opening on one end side in the axial direction of the tool main body is opened on a surface facing the front end side in the axial direction of a portion of the tool main body that is inserted inside the annular portion during cutting. An all-type cutting tool in which an oil supply passage is formed for supplying the teeth to the tooth portion.
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| JP2015003407A JP6319106B2 (en) | 2015-01-09 | 2015-01-09 | Total type cutting tool, machine tool, and radial bearing manufacturing method |
| KR1020177018116A KR101943779B1 (en) | 2015-01-09 | 2016-01-08 | Form cutting tool |
| MYPI2017702416A MY185249A (en) | 2015-01-09 | 2016-01-08 | Form cutting tool, machine tool, and manufacturing method of radial bearing |
| PCT/JP2016/050514 WO2016111354A1 (en) | 2015-01-09 | 2016-01-08 | Form cutting tool |
| CN201680004977.8A CN107107201B (en) | 2015-01-09 | 2016-01-08 | Form-cutting tool |
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| US4409868A (en) * | 1981-04-13 | 1983-10-18 | The Valeron Corporation | Threading tool and method |
| GB2096509B (en) * | 1981-04-13 | 1985-09-18 | Valeron Corp | A cutting tool and method for forming threads on a workpiece |
| US4761844A (en) * | 1986-03-17 | 1988-08-09 | Turchan Manuel C | Combined hole making and threading tool |
| DE3639672A1 (en) * | 1986-11-20 | 1988-06-01 | Walter Gmbh Montanwerke | TURNING INSERT TURNED TOOL FOR PICKING OR TAPING |
| JP2002346809A (en) * | 2001-05-25 | 2002-12-04 | Nissan Motor Co Ltd | Cutting tool for perforating process and perforating method using the same |
| JP2004100754A (en) * | 2002-09-06 | 2004-04-02 | Nsk Ltd | Finishing method for smooth surface of outer ring inner surface of bearing device and bearing device finished by the same method |
| JP2005254427A (en) * | 2004-03-15 | 2005-09-22 | Osg Corp | Tip detachable type tap with oil hole |
| JP5163626B2 (en) | 2009-11-02 | 2013-03-13 | 日本精工株式会社 | Electric power steering device |
| JP2011212778A (en) * | 2010-03-31 | 2011-10-27 | Denso Corp | Cutting tool and method for cutting using same |
| CN103619520B (en) * | 2011-06-08 | 2016-09-28 | Osg株式会社 | Removable tip type rotary tool |
-
2015
- 2015-01-09 JP JP2015003407A patent/JP6319106B2/en active Active
-
2016
- 2016-01-08 WO PCT/JP2016/050514 patent/WO2016111354A1/en active Application Filing
- 2016-01-08 CN CN201680004977.8A patent/CN107107201B/en active Active
- 2016-01-08 MY MYPI2017702416A patent/MY185249A/en unknown
- 2016-01-08 KR KR1020177018116A patent/KR101943779B1/en active IP Right Grant
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