JP2517404Y2 - Work holder - Google Patents
Work holderInfo
- Publication number
- JP2517404Y2 JP2517404Y2 JP8088591U JP8088591U JP2517404Y2 JP 2517404 Y2 JP2517404 Y2 JP 2517404Y2 JP 8088591 U JP8088591 U JP 8088591U JP 8088591 U JP8088591 U JP 8088591U JP 2517404 Y2 JP2517404 Y2 JP 2517404Y2
- Authority
- JP
- Japan
- Prior art keywords
- work
- hole
- spindle
- support shaft
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Gear Processing (AREA)
Description
【考案の詳細な説明】[Detailed description of the device]
【０００１】[0001]
【産業上の利用分野】本考案は、軸心から穴面までの距
離が周方向に定ピッチで規則的に変化する穴を具備した
ワーク、例えば、内周面に噛合い歯を有する歯車ポンプ
用のアウターロータなどを、外周の機械加工のために心
出しして保持するワーク保持具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work provided with holes in which the distance from the shaft center to the hole surface changes regularly in the circumferential direction at a constant pitch, for example, a gear pump having meshing teeth on the inner surface. The present invention relates to a work holder for centering and holding an outer rotor and the like for machining the outer periphery.
【０００２】[0002]
【従来の技術】焼結、鍛造、鋳造などで作られる歯車ポ
ンプのアウターロータ等は、外周面を機械加工して仕上
げる必要があり、この作業を正確に効率良く行う目的で
支軸とクランパとから成る首記のワーク保持具が用いら
れている。この保持具は、ワーク内周面の凹部に内接す
る支軸上に、複数個のワークを重ねて嵌め、さらに、重
ねたワークの最両端を加圧して支軸上にワークを固定す
る。そして、ワーク固定後の支軸を加工機に取付け、ワ
ークと共に回転させるなどしてワーク外周面の仕上げ研
磨加工等を行う。なお、ここに挙げたポンプ用ロータの
ほかにも、上述したような保持具を用いて外周面の加工
を行うワークは種々ある。2. Description of the Related Art Outer rotors for gear pumps made by sintering, forging, casting, etc. must be machined on the outer peripheral surface to finish them. The above-mentioned work holder is used. In this holder, a plurality of works are superposed and fitted on a support shaft inscribed in a recess on the inner peripheral surface of the work, and further, the outermost ends of the superposed works are pressed to fix the works on the support shaft. Then, the spindle after the work is fixed is attached to the processing machine and is rotated together with the work to perform finish polishing processing of the outer peripheral surface of the work. In addition to the pump rotors mentioned here, there are various works for machining the outer peripheral surface by using the above-described holder.
【０００３】[0003]
【考案が解決しようとする課題】上述した従来の保持具
は、丸断面の単純な支軸を使用している。一方、ワーク
は外周加工を行う前に厚みを一定させるための端面加工
を実施することが多い。端面加工により図５に示すよう
にワーク１０の内外周面のコーナ縁にバリ１１が発生す
るが、その後に外周加工を行えば、この過程でバリも同
時に除去することができるので工程面で有利になる。The above-mentioned conventional holder uses a simple support shaft having a circular cross section. On the other hand, in many cases, the work is subjected to the end face processing for making the thickness constant before the outer peripheral processing. As shown in FIG. 5, burrs 11 are generated at the corner edges of the inner and outer peripheral surfaces of the work 10 by the end surface processing. However, if the outer peripheral processing is performed after that, the burrs can be removed at the same time, which is advantageous in terms of process. become.
【０００４】ところが、内周側にバリがあると、保持具
の支軸をワークの穴に通すことができない。支軸径を小
さくすれば挿入できるが、これでは支軸によるワークの
心出しが不能になる。従って、従来の保持具を用いる場
合には、内周のバリの事前除去が不可欠であった。However, if there is a burr on the inner peripheral side, the spindle of the holder cannot be passed through the hole of the work. It can be inserted by reducing the spindle diameter, but this makes it impossible to center the workpiece by the spindle. Therefore, when the conventional holder is used, it is indispensable to remove the burrs on the inner circumference in advance.
【０００５】前掲のポンプロータ等は、内外周面の同軸
度を高めるために、支軸を基準にして先ず外周面を加工
し、その後、外周面を基準にして穴面を仕上げ加工す
る。この手順の場合、最終加工の穴面研磨時に同時にバ
リを除去できれば加工工程面でより有利になる。しか
し、そのためには、事前のバリ取りが不要な保持具が必
要である。In order to increase the coaxiality of the inner and outer peripheral surfaces of the pump rotor and the like, the outer peripheral surface is first processed with the spindle as a reference, and then the hole surface is finished with the outer peripheral surface as a reference. In the case of this procedure, if the burr can be removed at the same time when the hole surface of the final processing is polished, it becomes more advantageous in terms of the processing process. However, this requires a holder that does not require deburring in advance.
【０００６】本考案は、かかる要求に応えたワーク保持
具を提供しようとするものである。The present invention is intended to provide a work holder that meets such a demand.
【０００７】[0007]
【課題を解決するための手段】本考案は、上記の課題を
解決するため、ワークの穴の最小径部に内接させる支軸
の外周に、上記穴の最小径部に対応した位置の支軸径を
小さくする縦溝又は縦長の切欠き面と、支軸径をワーク
厚みと同一ピッチで軸方向に間歇的に小さくする周方向
の溝を設け、これ等の溝又は切欠き面を上記最小径部の
穴縁のバリとの干渉を避ける大きさにしておく。In order to solve the above problems, the present invention provides a support at a position corresponding to the minimum diameter portion of the hole on the outer periphery of the support shaft inscribed in the minimum diameter portion of the hole of the work. A vertical groove or a vertically elongated notch surface for reducing the shaft diameter and a circumferential groove for intermittently reducing the spindle diameter in the axial direction at the same pitch as the work thickness are provided. The size is set to avoid interference with the burr on the hole edge of the smallest diameter part.
【０００８】[0008]
【作用】ワークの穴の最小径部と支軸外周の縦溝又は切
欠き面とが対応した位置で支軸をワークの穴に通し、ワ
ークの端面が周方向の溝の部分に来たところでワークと
支軸を適当な角度相対回転させる。この動作は、支軸径
が小さくなっているところがバリの通り道となるので支
障なく行うことができる。また、ワークとの相対回転で
支軸の本来の径を残している部分がワークの穴の最小径
部に内接してワークの心出しが行われる。従って、支軸
径を心出しに必要な太さにして事前のバリ取り工程を省
くことができる。[Operation] When the spindle is passed through the hole of the work at a position where the minimum diameter of the hole of the work and the vertical groove or notch on the outer circumference of the shaft correspond, and the end surface of the work comes to the groove portion in the circumferential direction. Relatively rotate the work and the spindle by an appropriate angle. This operation can be performed without trouble because the location where the spindle diameter is small becomes the path for the burr. Further, the relative centering of the work is carried out by the relative rotation of the work, in which the portion of the support shaft, which has the original diameter, remains inscribed in the smallest diameter portion of the hole of the work. Therefore, it is possible to omit the preliminary deburring step by making the diameter of the support shaft a thickness necessary for centering.
【０００９】[0009]
【実施例】図１乃至図３に本考案の一実施例を示す。こ
のワーク保持具１は、内面に凸部１２を６０°の割出し
ピッチで計６個設けてある内接歯車用のポンプロータを
ワーク１０として保持するものであって、支軸２のワー
ク保持部３は、その外径をワークの凸部１２の各々に内
接する大きさにしてある。また、ワーク保持部３の外周
には、６０°の割出しピッチで配列する６条の縦溝４
と、この縦溝に連ねて軸方向にワーク厚みと同一ピッチ
で配列する環状溝５を設けてある。1 to 3 show an embodiment of the present invention. This work holder 1 holds a pump rotor for an internal gear, which has a total of six protrusions 12 on the inner surface at an index pitch of 60 °, as a work 10. The part 3 is sized so that its outer diameter is inscribed in each of the convex parts 12 of the work. Further, on the outer circumference of the work holding portion 3, there are 6 vertical grooves 4 arranged at an indexing pitch of 60 °.
An annular groove 5 is provided so as to be continuous with the vertical groove and arranged in the axial direction at the same pitch as the work thickness.
【００１０】６は支軸２と一体のフランジ、７は支軸先
端の螺子部８に螺着するナットであり、これ等から成る
クランパで厚み方向にかさねたワーク１０を両側から締
付けて支軸上に固定する。クランパは、ワーク１０を外
周面の加工に支障を来さない状態に固定できるものであ
ればよく、図示のものに限定されない。Reference numeral 6 is a flange integral with the support shaft 2, and 7 is a nut screwed to a screw portion 8 at the tip of the support shaft. Fix on top. The clamper is not limited to the one shown in the figure as long as it can fix the work 10 in a state where it does not hinder the processing of the outer peripheral surface.
【００１１】このように構成したワーク保持具１は、図
２（ａ）に示すように、凸部１２と縦溝４が対応した位
置でワークの穴に支軸２を通し、その後、図２（ｂ）に
示すようにワーク１０と支軸２を所定角度相対回転させ
て縦溝間に残された支軸外周面を凸部１２の突端に内接
させる。また、このようにしてワーク１０を心出しした
ら、ナット７を螺子部８に螺合させて締付け、ワーク固
定後、支軸後方のシャンクを加工機に装着してワーク外
周面を機械加工する。As shown in FIG. 2 (a), the work holder 1 having the above-described structure passes the support shaft 2 through the hole of the work at a position where the projection 12 and the vertical groove 4 correspond to each other, and then, as shown in FIG. As shown in (b), the work 10 and the support shaft 2 are relatively rotated by a predetermined angle, and the outer peripheral surface of the support shaft left between the vertical grooves is inscribed in the projecting end of the convex portion 12. Further, when the work 10 is centered in this way, the nut 7 is screwed into the screw portion 8 and tightened, and after fixing the work, the shank behind the spindle is attached to the processing machine to machine the outer peripheral surface of the work.
【００１２】なお、縦溝４と環状溝５は、凸部の形状や
バリの大きさに応じて巾、深さを決める。例えば、図の
ワークの場合、バリの高さは最大で０．２mm程度であ
る。そこで、溝４の巾を３mm、５の巾を２mm、両溝の深
さを共に０．５mmとしたところ、支軸の挿入を支障なく
行えた。The width and depth of the vertical groove 4 and the annular groove 5 are determined according to the shape of the convex portion and the size of the burr. For example, in the case of the work shown in the figure, the maximum height of the burr is about 0.2 mm. Therefore, by setting the width of the groove 4 to 3 mm, the width of 5 to 2 mm, and the depth of both grooves to 0.5 mm, the spindle can be inserted without any trouble.
【００１３】図４は他の実施例である。ワーク１０は、
図のように角穴等を有するものも保持対象に含まれる。FIG. 4 shows another embodiment. Work 10 is
The object to be held also includes those having a square hole as shown in the figure.
【００１４】また、前述の縦溝４に代えて縦長の切欠き
面９を設けても同一結果が得られる。The same result can be obtained by providing a vertically long cutout surface 9 instead of the vertical groove 4.
【００１５】このほか、溝５は、加工性を考慮すると環
状に形成するのが望ましいが、隣り合う縦溝間又は切欠
き面間で行き止まりになるようなものであってもよい。In addition, the groove 5 is preferably formed in an annular shape in consideration of workability, but may be a dead end between adjacent vertical grooves or notched surfaces.
【００１６】[0016]
【考案の効果】以上述べたように、本考案のワーク保持
具は、内周側のバリを残したままでワークを心出しして
保持できるので、加工後の外周面を基準にしたワーク内
周面の仕上げ加工時にバリの同時除去を行って加工工程
（バリの事前除去工程）を１つ省くことができ、生産性
の向上につながると云う効果が得られる。As described above, since the work holder of the present invention can center and hold the work while leaving the burrs on the inner circumference side, the work inner circumference based on the outer peripheral surface after machining is used. The burr can be simultaneously removed at the time of finishing the surface, and one processing step (preliminary burr removal step) can be omitted. This has the effect of improving productivity.
【図１】本考案の一実施例を示す斜視図FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】支軸の挿入手順を示す部分端面図FIG. 2 is a partial end view showing a procedure for inserting a spindle.
【図３】ワーク固定後の断面図FIG. 3 is a cross-sectional view after the work is fixed.
【図４】他の実施例の概要を示す端面図FIG. 4 is an end view showing the outline of another embodiment.
【図５】端面加工後のワークのバリの発生状態を示す図FIG. 5 is a diagram showing a state of occurrence of burrs on a work after end face processing.
１ ワーク保持具 ２ 支軸 ３ ワーク保持部 ４ 縦溝 ５ 環状溝 ６ フランジ ７ ナット ８ 螺子部 ９ 切欠き面 １０ ワーク １１ バリ １２ 凸部 1 Work Holder 2 Support Shaft 3 Work Holding Part 4 Vertical Groove 5 Annular Groove 6 Flange 7 Nut 8 Screw Part 9 Notch Surface 10 Work 11 Burr 12 Convex Part
Claims (1)
的に変化する穴を有し、事前の端面加工で内外周のコー
ナ縁部に径方向のバリが生じているワークを厚み方向に
重ねて外周に同心嵌合させる支軸と、重ねたワークの最
両端を加圧してワークを支軸上に固定するクランパとか
ら成り、ワーク固定後の支軸を加工機に装着してワーク
の外周面加工を行なうワーク保持具において、ワークの
穴の最小径部に内接させる上記支軸の外周に、上記穴の
最小径部に対応した位置の支軸径を小さくする縦溝又は
縦長の切欠き面と、支軸径をワーク厚みと同一ピッチで
軸方向に間歇的に小さくする周方向の溝を設け、これ等
の溝又は切欠き面を上記最小径部の穴縁のバリとの干渉
を避ける大きさにしたことを特徴とするワーク保持具。1. A work having a hole in which a distance from an axial center to a hole surface changes regularly in a circumferential direction, and a radial burr is generated on a corner edge of an inner and outer circumference in advance by end face machining. It consists of a spindle that stacks in the same direction and is fitted concentrically to the outer circumference, and a clamper that presses the outermost ends of the stacked workpieces to fix the workpieces on the spindle. In a work holder for machining the outer peripheral surface of a work, a vertical groove or a groove for reducing the diameter of the support shaft at a position corresponding to the minimum diameter part of the hole is provided on the outer periphery of the support shaft inscribed in the minimum diameter part of the work hole. A longitudinal notch and a circumferential groove that reduces the spindle diameter intermittently in the axial direction at the same pitch as the work thickness are provided, and these grooves or notches are used for burr of the hole edge of the minimum diameter part. A work holder characterized by being sized to avoid interference with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8088591U JP2517404Y2 (en) | 1991-10-04 | 1991-10-04 | Work holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8088591U JP2517404Y2 (en) | 1991-10-04 | 1991-10-04 | Work holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0531824U JPH0531824U (en) | 1993-04-27 |
| JP2517404Y2 true JP2517404Y2 (en) | 1996-11-20 |
Family
ID=13730803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8088591U Expired - Lifetime JP2517404Y2 (en) | 1991-10-04 | 1991-10-04 | Work holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2517404Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513870A (en) * | 2017-01-19 | 2017-03-22 | 衡山齿轮有限责任公司 | Gear grinding core shaft clamp |
-
1991
- 1991-10-04 JP JP8088591U patent/JP2517404Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0531824U (en) | 1993-04-27 |
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