JP2820806B2 - Processing method of inner peripheral surface of cup-shaped mold - Google Patents
Processing method of inner peripheral surface of cup-shaped moldInfo
- Publication number
- JP2820806B2 JP2820806B2 JP5447391A JP5447391A JP2820806B2 JP 2820806 B2 JP2820806 B2 JP 2820806B2 JP 5447391 A JP5447391 A JP 5447391A JP 5447391 A JP5447391 A JP 5447391A JP 2820806 B2 JP2820806 B2 JP 2820806B2
- Authority
- JP
- Japan
- Prior art keywords
- preliminary
- mold
- cup
- shaped
- grinding
- 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
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Forging (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内周面に周方向に間隔
を存して複数条の凸条部または溝部が形成されたカップ
部を有する等速継手の内輪成形用金型等のカップ状金型
を加工・製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for forming an inner ring of a constant velocity joint having a cup portion having a plurality of protruding ridges or grooves formed on an inner peripheral surface thereof at intervals in a circumferential direction. The present invention relates to a method for processing and manufacturing a cup-shaped mold.
【０００２】[0002]
【従来の技術】例えば、等速継手の内輪成形用金型とし
ては、図７及び図８に示すものが知られている。2. Description of the Related Art For example, a mold shown in FIGS. 7 and 8 is known as a mold for forming an inner ring of a constant velocity joint.
【０００３】この金型Ａは、図示しない内輪素材が収納
されるカップ部ａを有し、そのカップ部ａの内周面に
は、図示しない内輪のボール案内溝を成形するための複
数条の凸条部ｂが周方向に等間隔で形成されている。こ
の場合、各凸条部ｂは、カップ部ａの内側壁部ｃに該カ
ップ部ａの軸心と平行に延在するストレート部ｄと、該
カップ部ａの底部ｅにストレート部ｄに連続して延在す
る所定半径Ｒの湾曲部ｆとから成る。The mold A has a cup portion a for accommodating an inner ring material (not shown), and a plurality of grooves for forming a ball guide groove of the inner ring (not shown) are formed on an inner peripheral surface of the cup portion a. The ridges b are formed at equal intervals in the circumferential direction. In this case, each protruding ridge b is continuous with a straight portion d extending parallel to the axis of the cup portion a on the inner wall portion c of the cup portion a and a straight portion d on the bottom portion e of the cup portion a. And a curved portion f having a predetermined radius R extending.
【０００４】この種の金型Ａを製造する場合には、ま
ず、金型素材から穴明け加工や切削加工等を経て前記カ
ップ部ａと略相似形状の予備カップ部を有する予備金型
が製造される。この場合、予備カップ部の内周面には、
前記凸条部ｂに対応する予備凸条部も切削加工等により
形成される。[0004] When manufacturing this kind of mold A, first, a spare mold having a spare cup portion having a substantially similar shape to the cup portion a is manufactured from a mold material through drilling or cutting. Is done. In this case, on the inner peripheral surface of the spare cup part,
A preliminary ridge corresponding to the ridge b is also formed by cutting or the like.
【０００５】次いで、この予備カップ部の予備凸条部に
例えば放電加工が施され、これによって、該予備凸条部
が前記凸条部ｂと同一形状になるように加工される。[0005] Next, for example, electric discharge machining is performed on the preliminary ridge portion of the preliminary cup portion, whereby the preliminary ridge portion is processed so as to have the same shape as the ridge portion b.
【０００６】この場合、この放電加工においては、一般
には、電極の摩耗等により、予備凸条部を完全に所望の
凸条部ｂと同一形状に加工することができず、このた
め、従来は、最終的には、その放電加工後の予備凸条部
に手作業による磨き加工が施され、これによって、所望
の凸条部ｂを得るようにしていた。In this case, in this electric discharge machining, in general, the preliminary ridge cannot be completely formed into the same shape as the desired ridge b due to abrasion of the electrode or the like. Finally, the preliminary ridges after the electric discharge machining are polished manually to obtain desired ridges b.
【０００７】しかしながら、このように、最終的な仕上
げ加工を手作業により行っていたために、その作業に多
大な時間を要すると共に、個人差が生じ、金型Ａを精度
よく均一に製造することが困難であった。[0007] However, since the final finishing is performed by hand as described above, the work requires a great deal of time, and individual differences occur, so that the mold A can be manufactured accurately and uniformly. It was difficult.
【０００８】[0008]
【発明が解決しようとする課題】本発明はかかる不都合
を解消し、内周面に周方向に間隔を存して複数条の凸条
部または溝部を有するカップ状金型を製造する際に、そ
の内周面を精度よく、且つ短時間で所望の形状に加工す
ることができる方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended to solve such a problem. It is an object of the present invention to provide a method capable of processing the inner peripheral surface into a desired shape with high accuracy and in a short time.
【０００９】[0009]
【課題を解決するための手段】本発明はかかる目的を達
成するために、内周面に周方向に間隔を存して複数条の
凸条部または溝部が形成されたカップ部を有し、且つ、
各凸条部または溝部が、該カップ部の内側壁部に該カッ
プ部の軸心と平行に延在するストレート部と、該カップ
部の底部に該ストレート部に連続して延在する所定径の
湾曲部とから成るカップ状金型を製造するに際し、該カ
ップ状金型と略相似形状に形成され、且つ、その内周面
に予備凸条部または予備溝部が切削代を残して形成され
たカップ状予備金型を加工して前記カップ状金型を得る
方法であって、外周部に前記凸条部または溝部と略同一
断面形状を有して前記湾曲部の径よりも小径な略円板状
の第１の総形砥石を回動させながら前記カップ状予備金
型に挿入すると共に、該総形砥石を該予備金型の開口端
から底部に向かって該予備金型の軸心と平行に移動さ
せ、その移動時に、該総形砥石により、該予備金型の予
備凸条部または予備溝部の予備ストレート部と予備湾曲
部とを仕上げ研削代を残して研削する荒仕上げ研削工程
と、該荒仕上げ研削後に、外周部に前記凸条部または溝
部と同一断面形状を有して前記湾曲部の略同一径の略円
板状の第２の総形砥石を回動させながら前記カップ状予
備金型に挿入すると共に、該第２の総形砥石を該予備金
型の開口端から底部に向かって該予備金型の軸心と平行
に移動させ、その移動時に、該総形砥石により、該予備
金型の予備凸条部または予備溝部の予備ストレート部と
予備湾曲部とを仕上げ研削する仕上げ研削工程とから成
ることを特徴とする。In order to achieve the above object, the present invention has a cup having a plurality of ridges or grooves formed on an inner peripheral surface thereof at intervals in a circumferential direction, and,
A straight portion extending in parallel with the axis of the cup portion on the inner wall portion of the cup portion, and a predetermined diameter extending continuously from the straight portion on the bottom portion of the cup portion; When manufacturing a cup-shaped mold including a curved portion, the cup-shaped mold is formed in a substantially similar shape to the cup-shaped mold, and a preliminary convex portion or a preliminary groove portion is formed on an inner peripheral surface thereof, leaving a cutting allowance. A method of obtaining the cup-shaped mold by processing the cup-shaped preliminary mold, wherein the outer peripheral portion has substantially the same cross-sectional shape as the ridge or groove, and has a diameter smaller than the diameter of the curved portion. A first disk-shaped grinding wheel is inserted into the cup-shaped preliminary mold while rotating, and the grinding wheel is inserted from the opening end of the preliminary mold toward the bottom of the preliminary mold. And in parallel with it, and at the time of the movement, the preliminary ridge or the preliminary A rough finish grinding step of grinding the preliminary straight portion and the preliminary curved portion of the portion while leaving a finish grinding allowance, and after the rough finish grinding, the outer peripheral portion has the same cross-sectional shape as the convex portion or the groove portion and the curved portion A second generally-shaped grindstone having substantially the same diameter of a portion is inserted into the cup-shaped preliminary mold while rotating, and the second generally-shaped grindstone is inserted from the opening end of the preliminary mold to the bottom. The preliminary mold is moved in parallel to the axis of the preliminary mold, and at the time of the movement, the preliminary convex portion or preliminary straight portion and preliminary curved portion of the preliminary mold are preliminary ground by the forming grindstone. And a finish grinding step.
【００１０】さらに、前記荒仕上げ研削工程の後に、外
周部に前記凸条部または溝部と略同一断面形状を有して
前記湾曲部の径よりも小径で且つ前記第１の総形砥石よ
りも大径な略円板状の第３の総形砥石を回動させながら
前記カップ状予備金型に挿入すると共に、該第３の総形
砥石を該予備金型の開口端から底部に向かって該予備金
型の軸心と平行に移動させ、その移動時に、該第３の総
形砥石により、該予備金型の予備凸条部または予備溝部
の予備ストレート部と予備湾曲部とを仕上げ研削代を残
して研削する中仕上げ研削工程を備え、該中仕上げ研削
後に前記仕上げ研削工程が行われることを特徴とする。Further, after the rough finish grinding step, the outer peripheral portion has substantially the same cross-sectional shape as the ridge or groove, and has a diameter smaller than the diameter of the curved portion and larger than that of the first full-shaped grinding wheel. A large-diameter substantially disk-shaped third forming grindstone is inserted into the cup-shaped spare mold while rotating, and the third shaped grindstone is moved from the opening end of the spare mold toward the bottom. The preliminary mold is moved in parallel with the axis of the preliminary mold, and at the time of the movement, the preliminary convex portion or the preliminary straight portion and the preliminary curved portion of the preliminary groove portion of the preliminary mold are finish-ground by the third forming grindstone. A semi-finish grinding step for grinding while leaving a margin, and the finish grinding step is performed after the semi-finish grinding.
【００１１】[0011]
【作用】本発明によれば、前記荒仕上げ研削工程におい
て、前記第１の総形砥石により前記予備金型の予備凸条
部または予備溝部の前記予備ストレート部と前記予備湾
曲部とを仕上げ研削代を残して研削した後に、前記仕上
げ研削工程において、前記第２の総形砥石により、該予
備凸条部または予備溝部がその全長にわたって仕上げ研
削され、これにより、所望の形状の凸条部または溝部を
有する前記カップ部が形成される。According to the present invention, in the rough finishing grinding step, the preliminary forming portion or the preliminary straight portion of the preliminary groove and the preliminary bending portion of the preliminary groove are finish-ground by the first forming grindstone. After grinding with leaving a margin, in the finish grinding step, the preliminary convex portion or the preliminary groove portion is finish-ground over the entire length thereof by the second form grinding wheel, whereby the convex ridge portion or the desired shape is obtained. The cup having the groove is formed.
【００１２】この場合、各研削工程においては、各総形
砥石を回動させながら予備カップ部の軸心と平行に移動
させるだけでよく、このような移動は汎用工作機械やＮ
Ｃ工作機械等を用いて精度よく行うことが可能であるの
で、各研削工程においては、予備カップ部の予備凸条部
または予備溝部を精度よく所定量だけ研削することが可
能となる。In this case, in each grinding step, it is only necessary to move each of the formed grindstones while rotating them in parallel with the axis of the preliminary cup portion.
Since it is possible to accurately perform the grinding using a C machine tool or the like, in each grinding step, it is possible to precisely grind the preliminary ridge portion or the preliminary groove portion of the preliminary cup portion by a predetermined amount.
【００１３】さらに、前記中仕上げ研削工程を設けたと
きには、各研削工程における各総形砥石による研削量を
少なくすることが可能となり、従って、各総形砥石の研
削負担を軽減することが可能となると共に、各総形砥石
による研削量の精度をより向上させることが可能とな
る。Further, when the above-mentioned semi-finishing grinding step is provided, it is possible to reduce the amount of grinding by each of the forming wheels in each of the grinding steps, and thus it is possible to reduce the grinding burden of each of the forming wheels. At the same time, it becomes possible to further improve the accuracy of the amount of grinding by each of the grinding wheels.
【００１４】[0014]
【実施例】本発明のカップ状金型の内周面の加工方法の
一例を図１乃至図６、並びに前記の図７及び図８に従っ
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a method for processing the inner peripheral surface of a cup-shaped mold according to the present invention will be described with reference to FIGS. 1 to 6 and FIGS. 7 and 8 described above.
【００１５】図１は前記内輪成形用金型Ａの予備金型及
びその加工治具を説明するための説明図、図２及び図３
はそれぞれ図１のＩＩ−ＩＩ線断面図及びＩＩＩ−ＩＩ
Ｉ線断面図、図４乃至図６は予備金型の加工治具による
加工方法を説明するための作動説明図である。FIG. 1 is an explanatory diagram for explaining a spare die of the inner ring forming die A and a processing jig thereof, FIGS. 2 and 3.
Are sectional views taken along the line II-II of FIG. 1 and III-II, respectively.
FIGS. 4 to 6 are sectional views taken along the line I, and FIGS. 4 to 6 are operation explanatory diagrams for explaining a working method of a spare mold using a working jig.
【００１６】図１乃至図３で、１は予備金型、２は加工
治具である。1 to 3, reference numeral 1 denotes a spare mold, and reference numeral 2 denotes a processing jig.
【００１７】予備金型１は、金型素材（図示しない）か
ら穴明け加工、切削加工及び放電加工等を経て前記内輪
成形用金型Ａ（図７参照）と略相似形状に製造されたも
のであり、金型Ａのカップ部ａに対応する予備カップ部
３が形成されている。The spare mold 1 is manufactured from a mold material (not shown) through drilling, cutting, electric discharge machining, etc., into a shape substantially similar to the inner ring forming mold A (see FIG. 7). And a spare cup portion 3 corresponding to the cup portion a of the mold A is formed.
【００１８】そして、予備カップ部３の内周面には、周
方向に等間隔で複数条の予備凸条部４が形成され、この
予備凸条部４は、前記凸条部ｂを後述する切削加工によ
り得るための研削代ｔ1 をその全長にわたって有し、こ
の研削代ｔ1 を研削・除去することにより予備凸条部４
から図１仮想線で示す所望の凸条部ｂが得られるように
なっている。On the inner peripheral surface of the preliminary cup portion 3, a plurality of preliminary convex portions 4 are formed at equal intervals in the circumferential direction. the grinding allowance t 1 to obtain by cutting a over its entire length, pre ridge 4 by grinding and removing the grinding allowance t 1
Thus, a desired ridge b shown by a virtual line in FIG. 1 can be obtained.
【００１９】尚、予備凸条部４は、前記凸条部ｂのスト
レート部ｄ及び湾曲部ｆに対応して、予備ストレート部
５及び予備湾曲部６を有している。The preliminary convex portion 4 has a preliminary straight portion 5 and a preliminary curved portion 6 corresponding to the straight portion d and the curved portion f of the convex portion b.
【００２０】加工治具２は、図１及び図２に仮想線で示
す汎用工作機械あるいはＮＣ工作機械の主軸７に基部８
を介して取付けられており、該基部８から予備金型１の
予備カップ部３に向かって延設されたフレーム９の先端
部に略円板形状の総形砥石１０が回動自在に装着されて
いる。そして、基部８には、総形砥石１０を回動させる
ための駆動モータ１１が固設されており、この駆動モー
タ１１はその駆動軸に挿着された駆動プーリ１２によ
り、総形砥石１０と一体に回動自在にフレーム９の先端
部に装着された被動プーリ１３をプーリベルト１４を介
して回動させ、これにより、総形砥石１０を回動させる
ようにしている。The processing jig 2 has a base 8 on a main shaft 7 of a general-purpose machine tool or an NC machine tool indicated by phantom lines in FIGS.
A substantially disk-shaped grinding wheel 10 is rotatably mounted on the tip of a frame 9 extending from the base 8 toward the preliminary cup 3 of the preliminary mold 1. ing. A drive motor 11 for rotating the forming grindstone 10 is fixed to the base 8. The driving motor 11 is connected to the forming grindstone 10 by a driving pulley 12 inserted into the drive shaft. The driven pulley 13 attached to the front end portion of the frame 9 so as to be rotatable integrally is rotated via a pulley belt 14, thereby rotating the formed grindstone 10.
【００２１】また、前記総形砥石１０の外周部には、図
２及び図３に示すように、その全周にわたって溝１５が
形成されており、その溝１５の横断面形状は、前記凸条
部４の横断面形状（図８参照）と略同一もしくは相似形
状に形成されている。そして、加工治具２においては、
フレーム９の先端部に、径の異なる複数種の総形砥石１
０を着脱自在に装着可能とされ、本実施例では、図２に
示すように溝１１の底部における半径が、前記凸条部ｂ
の湾曲部ｆの半径Ｒよりも小さい半径Ｒ1 （Ｒ 1 ＜Ｒ）
を有する総形砥石１０ａと、半径Ｒよりも小さく、且つ
半径Ｒ1 よりも大きいが半径Ｒ2 （Ｒ1 ＜Ｒ2 ＜Ｒ）を
有する総形砥石１０ｂと、半径Ｒを有する総形砥石１０
ｃとを装着可能としている。Further, the outer peripheral portion of the above-mentioned forming grindstone 10 is
As shown in FIG. 2 and FIG. 3, a groove 15 is formed around the entire circumference.
The cross-sectional shape of the groove 15 is
Substantially the same or similar to the cross-sectional shape of the part 4 (see FIG. 8)
It is formed in a shape. And in the processing jig 2,
At the tip of the frame 9, a plurality of types of forming wheels 1 having different diameters are provided.
0 can be detachably attached, and in this embodiment, FIG.
As shown, the radius at the bottom of the groove 11 is
Radius R smaller than the radius R of the curved portion f of1(R 1<R)
And a smaller than the radius R, and
Radius R1Greater than but radius RTwo(R1<RTwo<R)
Forming wheel 10b having a radius R and forming wheel 10b having a radius R
c can be mounted.
【００２２】尚、総形砥石１０ｃの溝１５の横断面形状
は、前記凸条部４の横断面形状と略同一とされ、総形砥
石１０ａ，１０ｂの溝１５の横断面形状は、前記凸条部
４の横断面形状と概略同一の相似形状とされ、これらの
総形砥石１０は高精度で所定の形状に作製されている。The cross-sectional shape of the groove 15 of the formed grindstone 10c is substantially the same as the cross-sectional shape of the ridge 4. The cross-sectional shape of the groove 15 of the formed grindstones 10a, 10b is The cross-sectional shape of the ridge portion 4 is substantially the same as the cross-sectional shape, and the formed grindstones 10 are formed in a predetermined shape with high precision.
【００２３】次に、かかる加工治具２により予備金型１
を加工して前記金型Ａを得る方法を説明する。Next, the spare mold 1 is
The method for obtaining the mold A by processing the mold will be described.
【００２４】図１において、予備金型１を加工する際に
は、まず、フレーム９に半径Ｒ1 の総形砥石１０ａを装
着した状態で、駆動モータ１１により該総形砥石１０ａ
を回動させ、次いで、図示しない汎用工作機械あるいは
ＮＣ工作機械により加工治具２を予備金型１の予備カッ
プ部３に向かって移動させて総形砥石１０ａを予備カッ
プ部３内に挿入する。In FIG. 1, when processing the preliminary mold 1, first, with the forming wheel 10 a having a radius R 1 mounted on the frame 9, the driving wheel 11 drives the forming wheel 10 a.
Then, the processing jig 2 is moved toward the preliminary cup portion 3 of the preliminary mold 1 by a general-purpose machine tool or an NC machine tool (not shown) to insert the forming whetstone 10 a into the preliminary cup portion 3. .
【００２５】この場合、図３に示すように、総形砥石１
０ａの溝１５が一つの予備凸条部４に嵌合するような位
置で該総形砥石１０ａを予備カップ部３内に挿入し、ま
た、図４に示すように、総形砥石１０ａがその径に応じ
た所定量だけ予備カップ部３の中心軸Ｃから予備凸条部
４に接近した位置で該総形砥石１０ａを予備カップ部３
の中心軸Ｃと平行に移動させる。In this case, as shown in FIG.
At a position where the groove 15 of Oa fits into one of the preliminary ridges 4, the general-shaped grindstone 10a is inserted into the preliminary cup part 3, and as shown in FIG. At a position close to the preliminary ridge portion 4 from the central axis C of the preliminary cup portion 3 by a predetermined amount corresponding to the diameter, the general-purpose grindstone 10a is moved to the preliminary cup portion 3.
Is moved in parallel with the central axis C.
【００２６】この時、図４に示すように、総形砥石１０
ａは、その回動及び移動に伴ってその溝部１５により、
予備凸条部４の研削代ｔ1 を研削代ｔ2 を残して予備ス
トレート部５から予備湾曲部６にかけて徐々に研削して
いき、これにより、荒仕上げ研削工程が遂行される。そ
して、最終的に、総形砥石１０ａの中心が同図中Ｐ点に
達して予備湾曲部６を研削した後には、該総形砥石１０
ａは予備カップ部３内から抜脱され、かかる研削加工が
各予備凸条部４に対して順次行われる。At this time, as shown in FIG.
a is formed by the groove 15 with the rotation and movement thereof.
The grinding allowance t 1 of the preliminary ridge portion 4 is gradually ground from the preliminary straight portion 5 to the preliminary bending portion 6 while leaving the grinding allowance t 2 , whereby the rough finish grinding step is performed. Finally, after the center of the forming wheel 10a reaches the point P in FIG.
a is pulled out from the inside of the preliminary cup portion 3, and such a grinding process is sequentially performed on each preliminary ridge portion 4.
【００２７】次いで、図１において、上記総形砥石１０
ａに代えて、半径Ｒ2 の総形砥石１０ｂをフレーム９に
装着し、かかる後に、前記と同様に総形砥石１０ｂを回
動させながら予備カップ部３内に挿入する。Next, referring to FIG.
Instead of a, the form-grinding wheel 10b of radius R 2 is attached to the frame 9, according later, is inserted into the a preliminary cup portion 3 while rotating the form-grinding wheel 10b as well.
【００２８】そして、この場合にも、図５に示すよう
に、総形砥石１０ｂがその径に応じた所定量だけ予備カ
ップ部３の中心軸Ｃから予備凸条部４に接近した位置で
該総形砥石１０ｂを予備カップ部３の中心軸Ｃと平行に
移動させる。In this case as well, as shown in FIG. 5, the forming grindstone 10b is moved from the center axis C of the preliminary cup portion 3 to the preliminary convex portion 4 by a predetermined amount corresponding to its diameter. The forming wheel 10b is moved in parallel with the central axis C of the preliminary cup portion 3.
【００２９】この時、荒仕上げ研削工程と同様に、総形
砥石１０ｂは、その溝部１５により、予備凸条部４の研
削代ｔ2 を研削代ｔ3 を残して予備ストレート部５から
予備湾曲部６にかけて徐々に研削していき、これによ
り、中仕上げ研削工程が遂行される。そして、最終的
に、総形砥石１０ｂの中心が同図中Ｑ点に達して予備湾
曲部６を研削した後には、該総形砥石１０ｂは予備カッ
プ部３内から抜脱され、かかる研削加工が各予備凸条部
４に対して順次行われる。At this time, similarly to the rough finish grinding step, the forming whetstone 10b is preliminarily bent from the preliminary straight portion 5 by the groove portion 15 so that the grinding allowance t 2 of the preliminary ridge portion 4 is left with the grinding allowance t 3. The grinding is gradually performed on the part 6, whereby the semi-finishing grinding step is performed. And finally, after the center of the formed grindstone 10b reaches the point Q in the figure and grinds the preliminary curved portion 6, the formed grindstone 10b is pulled out from the inside of the preliminary cup portion 3, and the grinding process is performed. Is sequentially performed on each of the preliminary ridges 4.
【００３０】次いで、図１において、上記総形砥石１０
ｂに代えて、半径Ｒの総形砥石１０ｃをフレーム９に装
着し、かかる後に、前記と同様に総形砥石１０ｃを回動
させながら予備カップ部３内に挿入する。Next, referring to FIG.
In place of b, a forming whetstone 10c having a radius R is mounted on the frame 9, and after that, the forming whetstone 10c is inserted into the preliminary cup part 3 while rotating as in the above.
【００３１】そして、この場合には、図６に示すよう
に、総形砥石１０ｃの中心が前記凸条部ｂの湾曲部ｆの
中心点Ｏに達するような位置で該総形砥石１０ｃを予備
カップ部３の中心軸Ｃと平行に移動させる。In this case, as shown in FIG. 6, the formed grindstone 10c is preliminarily placed at a position where the center of the formed grindstone 10c reaches the center point O of the curved portion f of the ridge portion b. The cup part 3 is moved in parallel with the central axis C.
【００３２】この時、前記の各研削工程と同様に、総形
砥石１０ｃは、その溝部１５により、予備凸条部４の研
削代ｔ3 を全て、予備ストレート部５から予備湾曲部６
にかけて徐々に研削・除去していき、これにより、仕上
げ研削工程が遂行される。そして、最終的に、総形砥石
１０ｃの中心が前記凸条部ｂの湾曲部ｆの中心点Ｏに達
して予備湾曲部６が研削された時には、前記凸条部ｂが
得られる。かかる後には、総形砥石１０ｃは予備カップ
部３内から抜脱され、かかる研削加工が各予備凸条部４
に対して順次行われて凸条部ｂが形成され、最終的には
前記金型Ａが得られる。At this time, as in each of the above-mentioned grinding steps, the forming whetstone 10c uses the grooves 15 to remove all the grinding allowance t 3 of the preliminary ridges 4 from the preliminary straight portions 5 to the preliminary bending portions 6.
The grinding and removal are performed gradually until the finish grinding process is performed. And finally, when the center of the formed grindstone 10c reaches the center point O of the curved portion f of the convex ridge b and the preliminary curved portion 6 is ground, the convex ridge b is obtained. After this, the forming whetstone 10c is withdrawn from the inside of the preliminary cup portion 3, and the grinding process is performed on each of the preliminary ridge portions 4
Are sequentially performed to form the ridges b, and finally the mold A is obtained.
【００３３】このように、かかる加工方法によれば、予
備金型１の予備凸条部ｂの研削加工を荒仕上げ研削工
程、中仕上げ研削工程及び仕上げ研削工程の３段階に分
けて行うことにより、研削加工のみにより予備金型１か
ら所望の金型Ａを得ることができる。As described above, according to such a machining method, the grinding of the preliminary ridge portion b of the preliminary mold 1 is performed in three stages of the rough finish grinding process, the medium finish grinding process, and the finish grinding process. A desired mold A can be obtained from the spare mold 1 only by grinding.
【００３４】この場合、荒仕上げ研削工程及び中仕上げ
研削工程においては、凸条部ｂの湾曲部ｆの半径Ｒより
も小さいので、予備凸条部４の予備湾曲部６を予備スト
レート部５に較べて大きく研削することができ、従っ
て、仕上げ研削工程において、予備湾曲部６における総
形砥石１０ｃの研削負担を軽減することができると共
に、特に精度の要求される湾曲部ｆを予備湾曲部６の仕
上げ研削により精度よく得ることができる。In this case, since the radius R of the curved portion f of the ridge portion b is smaller than the radius R of the curved portion f of the ridge portion b in the rough finish grinding step and the intermediate finish grinding step, the preliminary curved portion 6 of the preliminary ridge portion 4 is connected to the preliminary straight portion 5. Therefore, the grinding load of the forming wheel 10c in the preliminary bending portion 6 can be reduced in the finishing grinding step, and the bending portion f, which requires particularly high precision, can be ground in the preliminary bending portion 6. Can be obtained with high precision by finish grinding.
【００３５】尚、本実施例では、研削加工を荒仕上げ研
削工程、中仕上げ研削工程及び仕上げ研削工程の３段階
に分けて行うようにしたが、例えば中仕上げ研削工程を
省略して荒仕上げ研削工程及び仕上げ研削工程のみによ
り、金型Ａを得るようにすることも可能であることはも
ちろんである。In the present embodiment, the grinding is performed in three stages of a rough finish grinding step, a medium finish grinding step, and a finish grinding step. However, for example, the rough finish grinding step is omitted and the rough finish grinding step is omitted. Needless to say, the mold A can be obtained only by the process and the finish grinding process.
【００３６】この場合において、本実施例のように研削
加工を荒仕上げ研削工程、中仕上げ研削工程及び仕上げ
研削工程の３段階に分けて行うようにした場合には、２
段階に分けて行う場合に較べて、各総形砥石１０による
予備凸条部ｂの研削代を小さくすることができ、従っ
て、各総形砥石１０の研削負担を軽減することができる
と共に、その摩耗を防止することができる。In this case, when the grinding is performed in three stages of the rough finish grinding process, the intermediate finish grinding process, and the finish grinding process as in the present embodiment, 2
Compared to the case of performing the steps separately, the grinding allowance of the preliminary ridge portion b by each of the forming wheels 10 can be reduced, so that the grinding load of each of the forming wheels 10 can be reduced, and Wear can be prevented.
【００３７】また、本実施例においては、予備金型１の
予備凸条部４を研削するようにしたが、例えば、各予備
凸条部４の間の溝部を本実施例と同様に、総形砥石を用
いて所望の形状に研削するようにすることも可能である
ことはもちろんである。In this embodiment, the preliminary ridges 4 of the preliminary mold 1 are ground. For example, the grooves between the preliminary ridges 4 are formed in the same manner as in this embodiment. Needless to say, it is also possible to use a shaped grindstone to grind into a desired shape.
【００３８】[0038]
【発明の効果】上記の説明から明らかなように、本発明
によれば、複数条の凸条部または溝部が内周面に形成さ
れたカップ部を有するカップ状金型を製造するに際し、
まず、荒仕上げ研削工程において、前記凸条部の湾曲部
の径よりも小さい第１の総形砥石を回動させつつ予備金
型の予備カップ部内にその軸心と平行に移動させ、この
時、該総形砥石により予備金型の予備凸条部または予備
溝部を仕上げ研削代を残して研削し、次いで、仕上げ研
削工程において、前記凸条部の湾曲部の径と略同一径の
第２の総形砥石を回動させつつ予備カップ部内にその軸
心と平行に移動させ、この時、該総形砥石により予備凸
条部または予備溝部を研削し、これにより前記カップ状
金型を得るようにしたことによって、総形砥石を移動さ
せる工作機械等を用いて短時間で、且つ精度よく所望の
金型を得ることができる。As is apparent from the above description, according to the present invention, when manufacturing a cup-shaped mold having a cup portion having a plurality of protruding ridges or grooves formed on the inner peripheral surface,
First, in the rough finish grinding step, the first formed grindstone smaller than the diameter of the curved portion of the ridge portion is moved in the spare cup portion of the spare mold while rotating in parallel with the axis thereof. Then, the preliminary ridge or the preliminary groove of the preliminary mold is ground with the forming whetstone, leaving a finish grinding allowance. Then, in the finish grinding step, a second ridge having a diameter substantially equal to the diameter of the curved portion of the convex ridge is obtained. Is moved parallel to the axis thereof in the preliminary cup portion while rotating the general shape grinding wheel, and at this time, the preliminary ridge portion or the preliminary groove portion is ground by the general shape grinding stone, thereby obtaining the cup-shaped mold. By doing so, it is possible to obtain a desired mold in a short time and with high accuracy by using a machine tool or the like that moves the formed grindstone.
【００３９】さらに、荒仕上げ研削工程と仕上げ研削工
程との間に中仕上げ研削工程を設け、この中仕上げ研削
工程おいては、前記第２の総形砥石の径よりも大きく、
且つ第２の総形砥石の径よりも小さい第３の総形砥石を
用いて、予備凸条部を仕上げ研削代を残して研削するよ
うにしたことによって、各総形砥石の研削負担を軽減し
てその摩耗等を防止することができると共に、特に、仕
上げ研削工程においては、予備湾曲部における研削代が
小さなものとなって、高精度で所望の凸条部または溝部
を形成することができる。Further, a semi-finishing grinding step is provided between the rough finishing grinding step and the finishing grinding step. In the semi-finishing grinding step, the diameter is larger than the diameter of the second general-purpose grinding wheel.
In addition, by using a third forming wheel that is smaller than the diameter of the second forming wheel, the preliminary ridge portion is ground while leaving a finishing grinding allowance, thereby reducing the grinding load of each forming wheel. In particular, in the finish grinding step, the grinding allowance at the pre-curved portion becomes small, and a desired ridge or groove can be formed with high precision. .
【図１】内輪成形用金型の予備金型及びその加工治具を
説明するための説明図FIG. 1 is an explanatory view for explaining a spare mold of a mold for forming an inner ring and a processing jig thereof.
【図２】図１のＩＩ−ＩＩ線断面図FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】図１のＩＩＩ−ＩＩＩ線断面図FIG. 3 is a sectional view taken along line III-III of FIG. 1;
【図４】予備金型の加工治具による加工方法を説明する
ための作動説明図FIG. 4 is an operation explanatory diagram for explaining a working method of a spare mold using a working jig.
【図５】予備金型の加工治具による加工方法を説明する
ための作動説明図FIG. 5 is an operation explanatory diagram for explaining a working method of a spare mold using a working jig;
【図６】予備金型の加工治具による加工方法を説明する
ための作動説明図FIG. 6 is an operation explanatory diagram for explaining a working method of a spare mold using a working jig.
【図７】内輪成形用金型の縦断面図FIG. 7 is a longitudinal sectional view of a mold for forming an inner ring.
【図８】図７のＶＩＩＩ−ＶＩＩＩ線断面図8 is a sectional view taken along line VIII-VIII in FIG. 7;
１…予備金型 ３…予備カップ部 ４…予備凸条部 ５…予備ストレート
部 ６…予備湾曲部 １０（１０ａ〜１０
ｃ）…総形砥石 Ａ…カップ状金型 ａ…カップ部 ｂ…凸条部 ｄ…ストレート部 ｆ…湾曲部DESCRIPTION OF SYMBOLS 1 ... Preliminary metal mold 3 ... Preliminary cup part 4 ... Preliminary convex part 5 ... Preliminary straight part 6 ... Preliminary bending part 10 (10a-10
c) ... Formed whetstone A ... Cup-shaped mold a ... Cup part b ... Convex ridge d ... Straight part f ... Curved part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B24B 19/00 - 19/02 B24B 5/04 - 5/06 B21J 13/02──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) B24B 19/00-19/02 B24B 5/04-5/06 B21J 13/02
Claims (2)
条部または溝部が形成されたカップ部を有し、且つ、各
凸条部または溝部が、該カップ部の内側壁部に該カップ
部の軸心と平行に延在するストレート部と、該カップ部
の底部に該ストレート部に連続して延在する所定径の湾
曲部とから成るカップ状金型を製造するに際し、該カッ
プ状金型と略相似形状に形成され、且つ、その内周面に
予備凸条部または予備溝部が切削代を残して形成された
カップ状予備金型を加工して前記カップ状金型を得る方
法であって、外周部に前記凸条部または溝部と略同一断
面形状を有して前記湾曲部の径よりも小径な略円板状の
第１の総形砥石を回動させながら前記カップ状予備金型
に挿入すると共に、該総形砥石を該予備金型の開口端か
ら底部に向かって該予備金型の軸心と平行に移動させ、
その移動時に、該総形砥石により、該予備金型の予備凸
条部または予備溝部の予備ストレート部と予備湾曲部の
とを仕上げ研削代を残して研削する荒仕上げ研削工程
と、該荒仕上げ研削後に、外周部に前記凸条部または溝
部と同一断面形状を有して前記湾曲部の略同一径の略円
板状の第２の総形砥石を回動させながら前記カップ状予
備金型に挿入すると共に、該第２の総形砥石を該予備金
型の開口端から底部に向かって該予備金型の軸心と平行
に移動させ、その移動時に、該総形砥石により、該予備
金型の予備凸条部または予備溝部の予備ストレート部と
予備湾曲部とを仕上げ研削する仕上げ研削工程とから成
ることを特徴とするカップ状金型の内周面の加工方法。An inner peripheral surface has a cup portion having a plurality of ridges or grooves formed at intervals in a circumferential direction, and each ridge or groove is formed inside the cup. A cup-shaped mold including a straight portion extending from the wall portion in parallel with the axis of the cup portion and a curved portion having a predetermined diameter extending continuously from the straight portion at the bottom of the cup portion is manufactured. At this time, the cup-shaped preliminary mold is formed into a shape substantially similar to the cup-shaped mold, and a preliminary convex ridge or a preliminary groove is formed on an inner peripheral surface thereof with a cutting margin left. A method for obtaining a mold, comprising rotating a substantially disk-shaped first general shaped grindstone having an outer peripheral portion having substantially the same cross-sectional shape as the ridge or groove and having a diameter smaller than the diameter of the curved portion. While inserting it into the cup-shaped preliminary mold, and moving the formed grindstone from the open end of the preliminary mold toward the bottom. Parallel moved and the axis of the pre-mold,
A rough finishing grinding step of grinding the preliminary straight portion and the preliminary curved portion of the preliminary ridge portion or the preliminary groove portion of the preliminary mold by the forming whetstone while leaving a margin for finishing grinding; After the grinding, the cup-shaped preliminary mold is rotated while rotating a substantially disk-shaped second general grinding wheel having the same cross-sectional shape as that of the ridge or groove on the outer peripheral portion and having substantially the same diameter as the curved portion. At the same time, the second forming grindstone is moved from the open end of the spare mold toward the bottom in parallel with the axis of the spare mold. A method of processing the inner peripheral surface of a cup-shaped mold, comprising a finish grinding step of finish-grinding a preliminary straight portion and a preliminary curved portion of a preliminary ridge portion or a preliminary groove portion of the mold.
記凸条部または溝部と略同一断面形状を有して前記湾曲
部の径よりも小径で且つ前記第１の総形砥石よりも大径
な略円板状の第３の総形砥石を回動させながら前記カッ
プ状予備金型に挿入すると共に、該第３の総形砥石を該
予備金型の開口端から底部に向かって該予備金型の軸心
と平行に移動させ、その移動時に、該第３の総形砥石に
より、該予備金型の予備凸条部または予備溝部の予備ス
トレート部と予備湾曲部とを仕上げ研削代を残して研削
する中仕上げ研削工程を備え、該中仕上げ研削後に前記
仕上げ研削工程が行われることを特徴とする請求項１記
載のカップ状金型の内周面の加工方法。2. After the rough finish grinding step, the outer peripheral portion has substantially the same cross-sectional shape as the ridge portion or the groove portion, has a smaller diameter than the curved portion, and has a smaller diameter than the first full-shaped grinding wheel. A large-diameter substantially disk-shaped third forming grindstone is inserted into the cup-shaped spare mold while rotating, and the third shaped grindstone is moved from the opening end of the spare mold toward the bottom. The preliminary mold is moved in parallel with the axis of the preliminary mold, and at the time of the movement, the preliminary convex portion or the preliminary straight portion and the preliminary curved portion of the preliminary groove portion of the preliminary mold are finish-ground by the third forming grindstone. The method according to claim 1, further comprising a semi-finishing grinding step for grinding while leaving a margin, wherein the finishing grinding step is performed after the semi-finishing grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5447391A JP2820806B2 (en) | 1991-03-19 | 1991-03-19 | Processing method of inner peripheral surface of cup-shaped mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5447391A JP2820806B2 (en) | 1991-03-19 | 1991-03-19 | Processing method of inner peripheral surface of cup-shaped mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05261658A JPH05261658A (en) | 1993-10-12 |
| JP2820806B2 true JP2820806B2 (en) | 1998-11-05 |
Family
ID=12971644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5447391A Expired - Fee Related JP2820806B2 (en) | 1991-03-19 | 1991-03-19 | Processing method of inner peripheral surface of cup-shaped mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2820806B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4026319B2 (en) * | 2001-02-16 | 2007-12-26 | セイコーエプソン株式会社 | Method for processing component forming tool and component forming tool manufactured by using this processing method |
| KR101036029B1 (en) * | 2010-12-31 | 2011-05-19 | 이관주 | Mold finishing-grinder |
-
1991
- 1991-03-19 JP JP5447391A patent/JP2820806B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05261658A (en) | 1993-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5209020A (en) | Method of and apparatus for profiling grinding wheels | |
| CN110948380B (en) | Planet grinding device and removal function optimization method thereof | |
| JPH02109671A (en) | Lens grinding machine and lens working method | |
| JPH0639697A (en) | Processing machine for eyeglass lens edge | |
| EP0626235A2 (en) | Centerless grinder and wheel truing device therefor | |
| CN106346378A (en) | Grinding wheel | |
| JP2820806B2 (en) | Processing method of inner peripheral surface of cup-shaped mold | |
| WO2005039821A1 (en) | Method for machining aspherical surface, method for forming aspherical surface, and system for machining aspherical surface | |
| JP2002361543A (en) | Internal surface grinding device | |
| JPS6279962A (en) | Method and tool for molding and dressing rubstone for cutting male screw | |
| US5951381A (en) | Grinding wheel for ophthalmic glasses and corresponding grinding machine | |
| JP3071640B2 (en) | Deep hole inner surface grinding method for workpieces | |
| JP3685418B2 (en) | Grinding method | |
| JPS6362650A (en) | Polishing machine | |
| JPS62282852A (en) | Grinding method | |
| JP2003205459A (en) | Polishing machining device and method | |
| JP2875344B2 (en) | Processing apparatus and processing method for toric and aspheric lenses | |
| JPS60232857A (en) | High-speed profile milling method and device for rotatory symmetric workpiece | |
| JPS59232758A (en) | Spherical face working system | |
| JPH0753890Y2 (en) | Flat surface burnishing tool | |
| JPH04240071A (en) | Method and device for polishing ring-shaped grinder element | |
| WO2006090985A1 (en) | Method of manufacturing pinion shaft and mold thereof | |
| JP3723628B2 (en) | Contouring grinding wheel and contouring grinding method | |
| JPH0780760A (en) | Grinding method in inner surface grinder | |
| JPH05305516A (en) | Gear manufacturing method and gear grinding tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080828 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090828 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |