JPH0531824U - Work holder - Google Patents
Work holderInfo
- Publication number
- JPH0531824U JPH0531824U JP8088591U JP8088591U JPH0531824U JP H0531824 U JPH0531824 U JP H0531824U JP 8088591 U JP8088591 U JP 8088591U JP 8088591 U JP8088591 U JP 8088591U JP H0531824 U JPH0531824 U JP H0531824U
- Authority
- JP
- Japan
- Prior art keywords
- work
- support shaft
- hole
- spindle
- outer peripheral
- 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.)
- Granted
Links
Landscapes
- Gear Processing (AREA)
Abstract
(57)【要約】
【目的】 軸心から穴面までの距離が周方向に規則的に
変化する穴を有し、かつ、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、内周側
のバリを残したままで心出しして保持し、外周加工に供
せるワーク保持具を提供する。
【構成】 ワーク１０の内周に設けられた凸部１２の突
端に内接する支軸２に、凸部１２に対応した位置の支軸
径を小さくする縦溝４と支軸径をワーク厚みと同一ピッ
チで軸方向に小さくする環状溝５を設け、それ等の溝を
バリの通り道にしてワークに対する支軸の挿入及び相対
回転で支軸のワーク保持部３上にワーク１０を嵌める。
そして、ナット７を螺子部８に螺合して締付け、支軸上
にワークを固定する。この状態で支軸２を加工機に装着
して外周面の加工を行えば、内周側のバリを最終加工と
なる内周面の仕上げ工程で同時に除去できるので事前の
バリ除去が不要になり、生産性が高まる。
(57) [Summary] [Purpose] There is a hole in which the distance from the axial center to the hole surface changes regularly in the circumferential direction, and radial burrs are formed on the inner and outer peripheral corner edges by prior end face machining. (EN) Provided is a work holder capable of centering and holding a generated work while leaving a burr on the inner peripheral side and subjecting it to an outer peripheral processing. [Structure] On a support shaft 2 inscribed in a projection end of a protrusion 12 provided on the inner periphery of a work 10, a vertical groove 4 and a support shaft diameter for reducing a support shaft diameter at a position corresponding to the protrusion 12 are defined as a work thickness. An annular groove 5 is formed at the same pitch so as to be smaller in the axial direction, and the work 10 is fitted on the work holding portion 3 of the support shaft by inserting the support shaft and relative rotation with respect to the work by using these grooves as paths for the burr.
Then, the nut 7 is screwed into the screw portion 8 and tightened to fix the work on the spindle. If the spindle 2 is mounted on the processing machine in this state and the outer peripheral surface is machined, burrs on the inner peripheral side can be removed at the same time in the finishing process of the inner peripheral surface, which is the final processing, so there is no need to remove burrs in advance. , Productivity is increased.
Description
【０００１】[0001]
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。 The present invention provides a workpiece having holes in which the distance from the shaft center to the hole surface changes regularly in the circumferential direction at a constant pitch, such as an outer rotor for a gear pump having meshing teeth on the inner peripheral surface. The present invention relates to a work holder that holds the work centered for machining the outer circumference.
【０００２】[0002]
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。 Outer rotors, etc. of gear pumps made by sintering, forging, casting, etc., must be machined on the outer peripheral surface to finish, and in order to perform this work accurately and efficiently, the main shaft consisting of a spindle and clamper A work holder is used. In this holder, a plurality of workpieces are stacked and fitted on a spindle that is inscribed in the recess on the inner surface of the work, and further, the extreme ends of the stacked workpieces are pressed to fix the workpieces on the spindle. .. Then, the spindle after fixing the work is attached to the processing machine and rotated along with the work to finish and polish 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 holding tool.
【０００３】[0003]
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 spindle having a round cross section. On the other hand, the work is often subjected to end face processing to make 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, but 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 support shaft 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 with the spindle. Therefore, when using a conventional holder, it is essential 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 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]
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 vertical groove or a vertical groove on the outer periphery of a spindle inscribed in the minimum diameter portion of a hole of a work, which reduces the diameter of the spindle at a position corresponding to the minimum diameter portion of the hole. A long notch surface and a circumferential groove that axially reduces the spindle diameter at the same pitch as the workpiece thickness are provided in the circumferential direction. Keep the size to avoid interference with burr.
【０００８】[0008]
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。 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 spindle correspond, and the end of the work comes into contact with the groove in the circumferential direction. Rotate the shaft relative to the appropriate angle. This operation can be performed without any hindrance because the small shaft diameter serves as a path for the burr. In addition, the part where the original diameter of the support shaft remains due to the relative rotation with the work is inscribed in the smallest diameter part of the hole in the work to center the work. Therefore, it is possible to omit the preliminary deburring step by making the diameter of the support shaft the thickness necessary for centering.
【０００９】[0009]
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 indexing pitch of 60 °, as the work 10. The outer diameter of the portion 3 is set so as to be inscribed in each of the convex portions 12 of the work. Further, on the outer periphery of the work holding portion 3, six vertical grooves 4 arranged at an indexing pitch of 60 °, and an annular groove 5 continuous with the vertical grooves and arranged at the same pitch as the work thickness in the axial direction. Is provided.
【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 denotes a flange integral with the support shaft 2, and 7 denotes a nut screwed to a screw portion 8 at the tip of the support shaft. Fix on the shaft. 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. 2A, the work holder 1 configured as described above passes the support shaft 2 through the hole of the work at a position where the protrusion 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 projection end of the convex portion 12. When the work 10 is centered in this way, the nut 7 is screwed into the screw portion 8 and tightened, and after the work is fixed, the shank behind the spindle is attached to the processing machine to machine the outer peripheral surface of the work. To do.
【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. When the width of the groove 4 was 3 mm, the width of the groove 4 was 2 mm, and the depths of both grooves were 0.5 mm, the spindle could 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. The work 10 also includes those having a square hole or the like 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 。Further, 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]
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, the work holder of the present invention can center and hold the work while leaving the burr on the inner peripheral side, so that the inner peripheral surface of the work is finished based on the outer peripheral surface after machining. By performing simultaneous removal of burrs during processing, one processing step (preliminary removal of burrs) can be omitted, and the effect of improving productivity can be obtained.
【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 formed 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 support shaft diameter at a position corresponding to the minimum diameter portion of the hole is provided on the outer periphery of the support shaft inscribed in the minimum diameter portion of the work hole. Provided with a vertically long notch surface and a circumferential groove for intermittently reducing the spindle diameter in the axial direction at the same pitch as the work thickness.These grooves or notch surface are formed by burr of the hole edge of the minimum diameter part. A work holder characterized by being sized to avoid interference with the work piece.
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 true JPH0531824U (en) | 1993-04-27 |
| JP2517404Y2 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) |
Cited By (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
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2517404Y2 (en) | 1996-11-20 |
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