JP2906225B2 - Spherical processing tool and its processing method - Google Patents
Spherical processing tool and its processing methodInfo
- Publication number
- JP2906225B2 JP2906225B2 JP7310014A JP31001495A JP2906225B2 JP 2906225 B2 JP2906225 B2 JP 2906225B2 JP 7310014 A JP7310014 A JP 7310014A JP 31001495 A JP31001495 A JP 31001495A JP 2906225 B2 JP2906225 B2 JP 2906225B2
- Authority
- JP
- Japan
- Prior art keywords
- ball
- processing tool
- holding portion
- spherical
- processing
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
- B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
- B24B39/045—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution the working tool being composed of a plurality of working rolls or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軸部の端部に形成
されたボール部、あるいは半球部の面を超仕上げ、つま
り境面に仕上げる球面の加工具及びその加工方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spherical processing tool for superfinishing the surface of a ball or a hemisphere formed at the end of a shaft, that is, a boundary surface, and a method of processing the same.
【０００２】[0002]
【従来の技術】従来の技術として図４に示すものがあっ
た。図１において、１は球面の加工具であり、平行に配
置された回転軸２の各端部に、外周が円弧面４に形成さ
れた一対のローラー３，３を取付けてなり、この各ロー
ラー３，３間にボールスタッド５のボール部６を介在さ
せ、該ローラー３，３を回転させながら、ボール部６を
挾圧することにより、該ボール部６の表面、つまり球面
を仕上げ加工する。2. Description of the Related Art FIG. 4 shows a conventional technique. In FIG. 1, reference numeral 1 denotes a spherical processing tool, which has a pair of rollers 3, 3 each having an outer circumference formed on an arc surface 4 attached to each end of a rotating shaft 2 arranged in parallel. The ball portion 6 of the ball stud 5 is interposed between the balls 3 and 3 and the ball portion 6 is pressed while rotating the rollers 3 to finish the surface of the ball portion 6, that is, the spherical surface.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のものは、ボ
ール部６の表面を超仕上げ（鏡面仕上げ）する際には、
ローラー３の円弧面４を高精度にかつ超仕上げする必要
があり、極めて高価になる欠点があった。本発明は多数
のボールを使用して上記ボール部６の表面を超仕上げで
きるようにすることにより、安価な球面の加工具及びそ
の加工方法を得ることを目的とする。In the above-mentioned conventional apparatus, when the surface of the ball portion 6 is super-finished (mirror-finished),
The arc surface 4 of the roller 3 needs to be highly-finished and super-finished, which is disadvantageous in that it is extremely expensive. An object of the present invention is to obtain an inexpensive spherical processing tool and a processing method thereof by enabling the surface of the ball portion 6 to be super-finished using a large number of balls.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記目的を達
成するために以下の如く構成したものである。即ち、棒
状のシャンク部の端部にシャンク部の軸心を中心とする
環状のボール保持部を設け、該ボール保持部に多数のボ
ールを環状に配列して自転可能に保持するとともに、各
ボールをボール保持部から外方に突出させる構成にした
ものである。また、棒状のシャンク部の端部にシャンク
部の軸心を中心とする環状のボール保持部を設け、該ボ
ール保持部に多数のボールを環状に配列して自転可能に
保持するとともに、各ボールをボール保持部から外方に
突出させてなる加工具を設け、該加工具の各ボールを被
加工材の球面にリング状に圧接させた状態で、前記加工
具及び被加工材を回転させるとともに、各加工具及び被
加工材の回転軸心を所定の交叉角度範囲内で変化させる
構成にしたものである。Means for Solving the Problems The present invention is configured as follows to achieve the above object. That is, an annular ball holding portion centered on the axis of the shank portion is provided at the end of the rod-shaped shank portion, and a large number of balls are arranged in an annular shape on the ball holding portion so as to be rotatably held. Is projected outward from the ball holding portion. In addition, an annular ball holding portion centered on the axis of the shank portion is provided at the end of the rod-shaped shank portion, and a large number of balls are arranged in an annular shape in the ball holding portion, and each ball is rotatably held. A processing tool is provided by projecting outward from the ball holding portion, and while the balls of the processing tool are pressed against the spherical surface of the workpiece in a ring shape, the processing tool and the workpiece are rotated. The rotation axis of each processing tool and the workpiece is changed within a predetermined crossing angle range.
【０００５】[0005]
【発明の実施の形態】以下本発明の実施例を図面に基い
て説明する。図面において、図１は本発明の実施例を示
す一部断面側面図、図２はその底面図である。図１にお
いて、１０は球面の加工具であり、円柱状のシャンク部
１１の下端外周にシャンク部１１の軸心を中心とする環
状のボール保持部１２を設け、該ボール保持部１２によ
り多数のボール１７を図２に示すように環状に配列して
自転可能に保持してなる。Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a partially sectional side view showing an embodiment of the present invention, and FIG. 2 is a bottom view thereof. In FIG. 1, reference numeral 10 denotes a spherical processing tool provided with an annular ball holding portion 12 centered on the axis of the shank portion 11 on the outer periphery of the lower end of a cylindrical shank portion 11. The balls 17 are arranged in a ring shape as shown in FIG.
【０００６】即ち、シャンク部１１は、工具鋼、鋳鉄等
の鋼材からなり、その下端軸心部に凹部１３を形成し、
該凹部１３の下端周縁にシャンク部１１の軸心を中心と
する環状の溝１４を形成する。この溝１４は、その断面
を円弧面に形成し、この溝１４に多数のボール１７を円
周方向に配列してその上部外周部を自転可能に嵌合さ
せ、リテーナ１５により円周方向に所定ピッチで配列保
持する。That is, the shank portion 11 is made of a steel material such as tool steel, cast iron, or the like, and has a concave portion 13 formed in the lower axial portion thereof.
An annular groove 14 is formed in the periphery of the lower end of the recess 13 around the axis of the shank 11. The groove 14 has a cross section formed in an arcuate surface, a number of balls 17 are arranged in the groove 14 in the circumferential direction, the upper outer peripheral portion thereof is rotatably fitted thereto, and the retainer 15 is used to prescribe a predetermined circumferentially. The array is maintained at the pitch.
【０００７】上記リテーナ１５は、下方に向かって拡開
するコーン状（又は倒立コップ状）に形成した主体１５
ａの外周端部に、多数の保持孔１６を円周方向に所定ピ
ッチで明けてなり、このリテーナ１５を上記シャンク部
１１の凹部１３に嵌合させ、その中心部を小ねじ１８に
よりシャンク部１１側に固定するとともに、その保持孔
１６により上記各ボール１７の内周部を自転可能に嵌合
保持する。The retainer 15 has a main body 15 formed in a cone shape (or an inverted cup shape) that expands downward.
A large number of holding holes 16 are formed at a predetermined pitch in the circumferential direction at the outer peripheral end of the shaft a. The retainer 15 is fitted into the recess 13 of the shank 11, and the center of the retainer 15 is 11 and the inner periphery of each ball 17 is rotatably fitted and held by the holding hole 16.
【０００８】上記ボール１７は、ボールベアリング等に
使用される市販の鋼製、あるいはセラミック製のボール
からなり、上記保持孔１６及びリテーナ１５により保持
されてボール保持部１２から下方かつ軸心方向に突出さ
れる。The ball 17 is made of a commercially available steel or ceramic ball used for a ball bearing or the like. The ball 17 is held by the holding hole 16 and the retainer 15 so as to extend downward and axially from the ball holding portion 12. Protruded.
【０００９】図３は上記加工具１０による被加工材の加
工状態を示す。図３において、２０は被加工材をなすボ
ールスタッドであり、テーパー軸状の軸部２１の一端
（右端）に球状に膨出成形されたボール部２２を一体に
有する。このボールスタッド２０を図３に示すように、
水平に配置してその左部側に位置する軸部２１を工作機
の主軸２３に同軸に嵌合固定するとともに、そのボール
部２２を主軸２３から右方に突出させ、該主軸２３を介
して上記ボールスタッド２０を水平軸心Ｈを中心として
低速で回転させる。FIG. 3 shows a processing state of a workpiece by the processing tool 10. In FIG. 3, reference numeral 20 denotes a ball stud which is a workpiece, and integrally has a ball portion 22 which is formed into a spherical bulge at one end (right end) of a tapered shaft portion 21. As shown in FIG. 3, this ball stud 20 is
The shaft portion 21 which is horizontally disposed and located on the left side thereof is coaxially fitted and fixed to the main shaft 23 of the machine tool, and the ball portion 22 is protruded rightward from the main shaft 23, through the main shaft 23. The ball stud 20 is rotated at a low speed about a horizontal axis H.
【００１０】一方、加工具１０を上下方向に起立させて
その上部に位置するシャンク部１１を工作機の揺動回転
軸２４に同軸に嵌合固定するとともに、その各ボール１
７を上記ボール部２２の上部側の面、つまり球面２２ａ
にリング状に略均等圧で圧接させ、この状態で、上記揺
動回転軸２４を介して加工具１０をその軸心Ｌを中心と
して高速回転させつつ、該加工具１０をボールスタッド
２０のボール部２２の中心点Ｏを中心として図３におい
て時計方向（ア）方向に向けて水平位置まで揺動させ
る。On the other hand, the processing tool 10 is raised in the vertical direction, and the shank portion 11 located above the processing tool 10 is coaxially fitted and fixed to the swinging rotation shaft 24 of the machine tool.
7 is an upper surface of the ball portion 22, that is, a spherical surface 22a.
In this state, the processing tool 10 is rotated at high speed about the axis L of the processing tool 10 via the oscillating rotation shaft 24 in this state. The part 22 is swung to the horizontal position in the clockwise direction (a) in FIG.
【００１１】上記時計方向（ア）方向の揺動角度は、図
３において加工具１０の左部のボール１７ａがボール部
２２の基部（左端）から該ボール部２２の上面に沿って
移動する上部移動量と、加工具１０の右部のボール１７
ｂがボール部２２の先端（右端）から該ボール部２２の
下面に沿って移動する下部移動量との和が、ボール部２
２の半周に相当する揺動角度とし、これにより、各ボー
ル１７（１７ａ，１７ｂ）によってボール部２２の全面
を加圧して超仕上げ、即ち、鏡面に仕上げ加工する。な
お、上記加工具１０の揺動は、時計方向（ア）及び反時
計方向（ア）に複数回往復揺動させてもよい。The swing angle in the clockwise direction (a) is such that the ball 17a on the left side of the processing tool 10 moves from the base (left end) of the ball portion 22 along the upper surface of the ball portion 22 in FIG. The amount of movement and the ball 17 on the right side of the processing tool 10
The sum of the distance b and the lower movement amount that moves along the lower surface of the ball portion 22 from the tip (right end) of the ball portion 22 is equal to
The swing angle is equivalent to a half of the circumference of the ball 2. By this, the entire surface of the ball portion 22 is pressed by the balls 17 (17a, 17b) to perform super finishing, that is, finishing to a mirror surface. The swing of the processing tool 10 may be reciprocated a plurality of times in the clockwise direction (A) and the counterclockwise direction (A).
【００１２】上記実施例によれば、ボールスタッド２１
が水平軸心Ｈを中心として回転することにより、加工具
１０の各ボール１７がボール部２２の球面２２ａ上を水
平軸心Ｈを中心として転動し、また、加工具１０がその
軸心Ｌを中心として回転することにより、上記各ボール
１７がボール部２２の球面２２ａ上を上記軸心Ｌを中心
として転動し、さらに、加工具１０がボール部２２の中
心点Ｏを中心として図３において時計方向（ア）に揺動
することにより、上記各ボール１７がボール部２２の球
面２２ａ上を上記中心点Ｏを中心として時計方向（ア）
に転動することになる。According to the above embodiment, the ball stud 21
Is rotated about the horizontal axis H, so that each ball 17 of the processing tool 10 rolls on the spherical surface 22a of the ball portion 22 about the horizontal axis H, and the processing tool 10 is rotated by its axis L. , Each ball 17 rolls on the spherical surface 22a of the ball portion 22 around the axis L, and the processing tool 10 further moves around the center point O of the ball portion 22 in FIG. Swinging in the clockwise direction at (a), the balls 17 move on the spherical surface 22a of the ball portion 22 around the center point O in the clockwise direction (a).
Rolling.
【００１３】これにより、上記加工具１０の各ボール１
７は、ボール部２２の球面２２ａ上を三方向に転動しな
がら該球面２２ａの全面を加圧することになり、該球面
２２ａを均一にかつ鏡面に仕上げることになる。また、
長期の使用によってボール１７が磨耗した際には、リテ
ーナ１５を取外し、新規なボール１７と交換する。な
お、本発明は、棒材の端部に半球部を有する半球部の球
面を加工することもできる。Thus, each ball 1 of the processing tool 10 is provided.
In 7, the entire surface of the spherical surface 22 a is pressed while rolling on the spherical surface 22 a of the ball portion 22 in three directions, and the spherical surface 22 a is uniformly and mirror-finished. Also,
When the ball 17 has worn out due to long-term use, the retainer 15 is removed and replaced with a new ball 17. According to the present invention, a spherical surface of a hemispherical portion having a hemispherical portion at an end of a bar can also be processed.
【００１４】[0014]
【発明の効果】以上の説明から明らかな如く、本発明
は、安価なボールを活用して球面を超仕上げ加工するこ
とができる効果を奏する。As is clear from the above description, the present invention has an effect that a spherical surface can be super-finished using an inexpensive ball.
【図１】図１は本発明の実施例を示す一部断面側面図で
ある。FIG. 1 is a partially sectional side view showing an embodiment of the present invention.
【図２】図１の底面図である。FIG. 2 is a bottom view of FIG.
【図３】本発明による被加工材の加工状態を示す一部断
面側面図である。FIG. 3 is a partial cross-sectional side view showing a processing state of a workpiece according to the present invention.
【図４】従来例を示す側面図である。FIG. 4 is a side view showing a conventional example.
１０ 加工具 １１ シャンク部 １２ ボール部 １３ 凹部 １４ 溝 １５ リテーナ １５ａ 主体 １６ 保持孔 １７ ボール １８ 小ねじ ２０ ボールスタッド（被加工材） ２１ 軸部 ２２ ボール部 ２２ａ 球面 ２３ 主軸 ２４ 揺動回転軸 Ｌ 軸心（回転軸心） Ｈ 水平軸心（回転軸心） DESCRIPTION OF SYMBOLS 10 Processing tool 11 Shank part 12 Ball part 13 Concave part 14 Groove 15 Retainer 15a Main body 16 Holding hole 17 Ball 18 Machine screw 20 Ball stud (workpiece) 21 Shaft part 22 Ball part 22a Spherical surface 23 Main axis 24 Oscillating rotation axis L axis Heart (Rotation axis) H Horizontal axis (Rotation axis)
Claims (2)
軸心を中心とする環状のボール保持部を設け、該ボール
保持部に多数のボールを環状に配列して自転可能に保持
するとともに、各ボールをボール保持部から外方に突出
させたことを特徴とする球面の加工具。1. An end of a rod-shaped shank portion is provided with an annular ball holding portion centered on the axis of the shank portion, and a number of balls are arranged in an annular shape on the ball holding portion and held rotatably. A spherical processing tool, wherein each ball protrudes outward from the ball holding portion.
軸心を中心とする環状のボール保持部を設け、該ボール
保持部に多数のボールを環状に配列して自転可能に保持
するとともに、各ボールをボール保持部から外方に突出
させてなる加工具を設け、該加工具の各ボールを被加工
材の球面にリング状に圧接させた状態で、前記加工具及
び被加工材を回転させるとともに、各加工具及び被加工
材の回転軸心を所定の交叉角度範囲内で変化させたこと
を特徴とする球面の加工方法。2. A bar-shaped shank having an annular ball holding portion centered on the axis of the shank portion at an end of the shank portion, and a number of balls arranged in an annular shape on the ball holding portion so as to be rotatable. A processing tool is provided by projecting each ball outward from the ball holding portion. In a state where each ball of the processing tool is pressed against the spherical surface of the workpiece in a ring shape, the processing tool and the workpiece are separated. A method for processing a spherical surface, wherein the processing tool and the workpiece are rotated and the axes of rotation of the workpieces are changed within a predetermined crossing angle range.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7310014A JP2906225B2 (en) | 1995-11-02 | 1995-11-02 | Spherical processing tool and its processing method |
| KR1019960040328A KR100207439B1 (en) | 1995-11-02 | 1996-09-13 | Grinding tool for ball and the method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7310014A JP2906225B2 (en) | 1995-11-02 | 1995-11-02 | Spherical processing tool and its processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09131664A JPH09131664A (en) | 1997-05-20 |
| JP2906225B2 true JP2906225B2 (en) | 1999-06-14 |
Family
ID=18000121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7310014A Expired - Fee Related JP2906225B2 (en) | 1995-11-02 | 1995-11-02 | Spherical processing tool and its processing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2906225B2 (en) |
| KR (1) | KR100207439B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521999B (en) * | 2013-09-26 | 2016-02-10 | 北京航天试验技术研究所 | Ball rolling device and ball rolling method |
| CN105619242B (en) * | 2014-10-28 | 2019-03-15 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of 45 ° of die joints sealing rubber ring mold rolls burnishing device and technique |
| CN111906686A (en) * | 2020-07-29 | 2020-11-10 | 宁波拓普集团股份有限公司 | Cutter device for cold extrusion mirror surface processing of material not removed on sphere-like surface |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539713Y2 (en) * | 1973-05-15 | 1978-03-14 |
-
1995
- 1995-11-02 JP JP7310014A patent/JP2906225B2/en not_active Expired - Fee Related
-
1996
- 1996-09-13 KR KR1019960040328A patent/KR100207439B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100207439B1 (en) | 1999-07-15 |
| JPH09131664A (en) | 1997-05-20 |
| KR960040551A (en) | 1996-12-17 |
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