JPS6222733B2 - - Google Patents
Info
- Publication number
- JPS6222733B2 JPS6222733B2 JP58120268A JP12026883A JPS6222733B2 JP S6222733 B2 JPS6222733 B2 JP S6222733B2 JP 58120268 A JP58120268 A JP 58120268A JP 12026883 A JP12026883 A JP 12026883A JP S6222733 B2 JPS6222733 B2 JP S6222733B2
- Authority
- JP
- Japan
- Prior art keywords
- claw
- pressing surface
- vise
- claws
- workpiece
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/06—Swaging presses; Upsetting presses
- B21J9/08—Swaging presses; Upsetting presses equipped with devices for heating the work-piece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/14—Twisting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
- B21K5/04—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes twisting-tools, e.g. drills, reamers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
【発明の詳細な説明】
本発明は歯科用リーマ等の極細角棒を捩る装置
に係り、特に角棒の元部を把持し得るチヤツク部
と角棒の各側面を押圧し得る複数個のバイスツメ
との組み合わせよりなる極細角棒捩り装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for twisting an ultra-fine square bar such as a dental reamer, and more particularly, the present invention relates to a device for twisting a very thin square bar such as a dental reamer. This relates to an ultra-fine rectangular bar twisting device which is made of a combination of the following.
従来から歯科用リーマは断面三角又は四角に研
削した後にこれを捩つて形成していたが、これを
捩るに当つては第１図に示す如くワーク１の元部
をチヤツク２で把持すると共にワーク１の側面を
バイスツメ３で挾持し、且つツメ３を回転させつ
つ後退させて行つていた。そしてワーク１の側面
を挾持するに当つては第２図ａの如くツメ３に溝
４を設け、該溝４によつて挾持するか、または第
２図ｂの如く先端を極細状にしたバイスツメ３′
によつて挾持していた。しかし歯科用リーマは非
常に細いために（角形の一辺が約0.04mmからあ
る）前者の方法はワーク１に対するツメ３の位置
精度及び溝４の寸法精度を極めてよくしないと、
ワーク１のエツジを傷めたり、或は捩れなくなつ
たりする欠点があり、また後者の方法はテーパー
付ワークを捩るに当つて、ワーク１の先端極細部
分では隣接するツメ３′が相互にぶつかり合つて
ワークを挾持し得なくなり、これを防止するため
にツメ３′の先端を極細にしておくと、ワーク１
の元部を挾持したときにその表面に傷を生じさせ
てしまう欠点があり、いずれの方法もワーク１の
エツジを傷めない様に捩りピツチを均一に、且つ
最先端迄正確に捩ることは難しく、またワーク１
の太さによつてツメを交換しなければならない欠
点があつた。本発明は従来の上記欠点に鑑み開発
された全く新規な技術に関するものである。 Traditionally, dental reamers have been formed by twisting the reamer after grinding it into a triangular or square cross section. To twist the reamer, as shown in Fig. The sides of 1 were held with vise claws 3, and the claws 3 were rotated and moved backwards. In order to clamp the side surface of the workpiece 1, the claw 3 is provided with a groove 4 as shown in FIG. 3'
It was held in place by. However, since the dental reamer is very thin (one side of the square is approximately 0.04 mm), the former method requires extremely high positional accuracy of the claw 3 with respect to the workpiece 1 and dimensional accuracy of the groove 4.
The latter method has the drawback of damaging the edges of the workpiece 1 or making it impossible to twist the workpiece.Also, when twisting the tapered workpiece, the adjacent claws 3' collide with each other at the very thin tip of the workpiece 1. In order to prevent this, if the tip of the claw 3' is made extremely thin, the workpiece 1
Both methods have the disadvantage of causing scratches on the surface when the base of the workpiece is clamped, and it is difficult to twist the twisting pitch uniformly and accurately to the cutting edge without damaging the edges of the workpiece 1. , and work 1
The drawback was that the claws had to be replaced depending on the thickness of the nails. The present invention relates to a completely new technology developed in view of the above-mentioned drawbacks of the conventional technology.
図により本発明の一実施例を断面四角形状のテ
ーパー付ワークを捩る場合で説明すると、第３図
に於いて５はワーク１を把持し得るチヤツクであ
つて、下方に設けたモーター６によつてワーク１
を把持した状態で回転し得る如く構成され、７は
ワーク１の各側面を挾持し、これを捩りつつシリ
ンダー（図示せず）等によつて前進後退可能なバ
イスである。前記バイス７は第４図及び第５図に
示される如く４個のバイスツメ８の前面の一部が
隣接するツメ８の側面に接触する様に互い違いに
配置され、該ツメ８を支持するアーム９は支点１
０を中心に回動可能にアーム１１に取付けられ、
更にアーム１１は支点１２を中心にして他端に設
けたシリンダー１３によつて回動可能に構成され
ている。１４は隣接するアーム９間に取付けられ
たスプリングであつて、各アーム９を図面矢印ａ
の方向に引張ることによつて夫々のツメ８の側面
が互いに隣接するツメ８の前面に押し付けられる
様になつている。尚、上記スプリング１４の力は
さほど強いものでなくてもよい。また前記アーム
９はシリンダー１３を前進させることによつて前
進し、これによつてツメ８を図面矢印ｂの方向に
前進させてワーク１の側面を押え、ワーク１が回
転しない様に加圧し得る。このときの力ａ，ｂの
力はａ＜ｂの関係にある。 One embodiment of the present invention will be explained with reference to the drawings in the case of twisting a tapered workpiece with a rectangular cross section. In FIG. Tsute work 1
7 is a vice that can be rotated while gripping the workpiece 1, and 7 is a vice that can be moved forward and backward by a cylinder (not shown) or the like while gripping each side of the workpiece 1 and twisting the workpiece. As shown in FIGS. 4 and 5, the vices 7 are arranged alternately so that a portion of the front surface of the four vise claws 8 contacts the side surface of the adjacent claw 8, and has an arm 9 that supports the claws 8. is fulcrum 1
It is attached to the arm 11 so as to be rotatable around 0,
Further, the arm 11 is configured to be rotatable about a fulcrum 12 by a cylinder 13 provided at the other end. 14 is a spring installed between adjacent arms 9, and each arm 9 is
By pulling in the direction of , the side surface of each claw 8 is pressed against the front surface of the claw 8 adjacent to each other. Note that the force of the spring 14 does not need to be very strong. Further, the arm 9 moves forward by moving the cylinder 13 forward, thereby moving the claw 8 forward in the direction of arrow b in the figure to press the side surface of the workpiece 1 and pressurizing the workpiece 1 so that it does not rotate. . The forces a and b at this time have a relationship of a<b.
上記の如く構成された装置によつてトテーパー
付のワーク１を捩るには、まずワーク１をチヤツ
ク５によつて把持し、次に第５図に示す如くツメ
８を開いて間隙１５にワーク１を挿入し、ツメ８
を閉じればワーク１の側面を辺の長さ全てで安定
して挾持でき、この状態でチヤツク５を回転させ
ると共にシリンダー１３によつてツメ８を押圧し
つつバイス７を後退させればワーク１が漸時細く
なつてもそれに合わせてツメ８が漸時前進し、常
にワーク１を安定した状態で挾持してこれを捩る
ことができる。 In order to twist the tapered workpiece 1 with the device configured as described above, first the workpiece 1 is held by the chuck 5, and then the claw 8 is opened as shown in FIG. Insert and press tab 8.
When closed, the sides of the workpiece 1 can be stably clamped along the entire length of the sides. In this state, by rotating the chuck 5 and retracting the vise 7 while pressing the claw 8 with the cylinder 13, the workpiece 1 can be held. Even if it gradually becomes thinner, the claws 8 gradually move forward in accordance with the thinning, so that the workpiece 1 can always be held in a stable state and twisted.
尚、上記実施例に於いてはシリンダー１３を４
本使用する構成を示したが、第６図に示す如く４
個のツメのうち１個のツメ８′を固定し、その右
隣のツメ８″はａ方向のみ可動可能にしてｂ方向
には動かない様に構成してもよく、更には４個の
ツメのうち隣り合う２個のツメ８′，８″をａ方向
のみ可動可能にしてｂ方向には動かない様に構成
してもよい。この場合は２本のシリンダー１３で
装置を動作させることができる。 Incidentally, in the above embodiment, the cylinder 13 is 4
The configuration used in this example is shown, but as shown in Figure 6, 4
One of the claws 8' may be fixed, and the claw 8'' to the right of it may be configured to be movable only in the a direction and not move in the b direction. The two adjacent claws 8' and 8'' may be configured to be movable only in the direction a, but not in the direction b. In this case, the device can be operated with two cylinders 13.
また上記実施例に於いてはワーク１の断面が四
角形の場合で説明したが、第７図に示す如くツメ
８の数を３個にすれば断面三角形のテーパー付ワ
ークを同様に捩ることが可能である。この場合も
第８図に示す如く３個のツメのうち１個のツメ
８′を固定し、他の１個のツメ８″をａ方向のみ可
動可能にしてｂ方向へは動かない様に構成しても
よく、この場合は１本のシリンダー１３で装置を
動作させることが可能となる。 Further, in the above embodiment, the case where the cross section of the workpiece 1 is square has been explained, but if the number of claws 8 is increased to three as shown in FIG. 7, it is possible to twist a tapered workpiece with a triangular cross section in the same way. It is. In this case as well, as shown in Fig. 8, one of the three claws 8' is fixed, and the other claw 8'' is configured to be movable only in the direction a, but not in the direction b. In this case, it becomes possible to operate the device with one cylinder 13.
更にバイス７を後退させるに当つて、第９図に
示す如くツメを回転可能なローラー状ツメ１６に
すればバイス７の後退が極めてスムーズに行い得
る。 Furthermore, when retracting the vise 7, the vise 7 can be retracted extremely smoothly by using a rotatable roller-shaped pawl 16 as shown in FIG.
本発明は前述の如く隣接するバイスツメを互い
違いに配置したためにツメは角棒の太さによつて
挿入の際の精度を考慮することなく、常に側辺全
体を挾持でき、このため角棒のエツジを全く傷め
ることなくこれを捩ることができ、また角棒のテ
ーパーに合わせて、且つ太さが極細になつてもそ
の側面を挾持し得るために従来の如く角棒の太さ
毎にツメを取り替える必要もなく、且つテーパー
の最先端まで均一ピツチで正確に捩ることができ
る等の特徴を有するために歯科用リーマ等、極細
状にして捩り精度が要求される捩り角棒の製造に
は最適である。 In the present invention, as mentioned above, since the adjacent vise claws are arranged alternately, the claws can always grip the entire side without considering the accuracy during insertion depending on the thickness of the square bar. In order to be able to twist the square bar without damaging it at all, and to match the taper of the square bar and to be able to hold the sides of the bar even if the thickness becomes extremely thin, we have added a claw for each thickness of the square bar as in the past. It does not need to be replaced and can be twisted accurately with a uniform pitch up to the tip of the taper, making it ideal for manufacturing dental reamers and other torsion square rods that require extremely fine twisting accuracy. It is.
第１図及び第２図は従来例の説明図、第３図乃
至第６図は本発明の一実施例の説明図、第７図乃
至第９図は他の実施例の説明図である。
１はワーク、２，５はチヤツク、３，３′，
８，１６はツメ、４は溝、７はバイス、９，１１
はアーム、１３はシリンダー、１４はスプリング
である。
1 and 2 are explanatory diagrams of a conventional example, FIGS. 3 to 6 are explanatory diagrams of one embodiment of the present invention, and FIGS. 7 to 9 are explanatory diagrams of other embodiments. 1 is the workpiece, 2, 5 is the chuck, 3, 3',
8, 16 are claws, 4 is grooves, 7 is vice, 9, 11
is an arm, 13 is a cylinder, and 14 is a spring.
Claims (1)
面を押圧し得る３個以上のバイスツメとよりな
り、チヤツク部とバイスツメが相対的に回転しな
がら遠のく捩り装置に於いて、角棒側面を押圧す
るバイスツメの押圧面の片側押圧面端が隣接する
第１のバイスツメの押圧面に接しかつ他側の押圧
面が隣接する第２のバイスツメの押圧面端に接す
る如く前記隣接するバイスツメを互い違いに配置
すると共に、角棒の太さに合わせて各バイスツメ
は該押圧面が角棒側面を押圧又は離間する方向に
移動可能にし、更に隣接する第１のバイスツメの
押圧面に接する該押圧面端がその押圧面を押圧可
能に構成したことを特徴とした極細角棒捩り装
置。 ２ バイスツメを回転可能なローラー状ツメに構
成したことを特徴とした特許請求の範囲第１項記
載の極細角棒捩り装置。[Claims] 1. A torsion device consisting of a chuck part that grips the base of the square bar and three or more vise claws that can press each side of the square bar, and in which the chuck part and the vise claws move away while rotating relative to each other. In such a manner that one end of the pressing surface of the vise claw that presses the side surface of the square bar is in contact with the pressing surface of the adjacent first vise claw, and the other pressing surface is in contact with the end of the pressing surface of the adjacent second vice claw. The adjacent vice claws are arranged alternately, and the pressing surface of each vice claw is movable in a direction that presses or separates the side surface of the square bar according to the thickness of the square bar, and the pressing surface of the adjacent first vice claw is An ultra-thin rectangular rod twisting device characterized in that the end of the pressing surface in contact with the pressing surface is configured to be able to press the pressing surface. 2. The ultra-fine rectangular bar twisting device according to claim 1, wherein the vise claw is configured as a rotatable roller-shaped claw.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58120268A JPS6016324A (en) | 1983-07-04 | 1983-07-04 | Device for twisting extremely thin square rod |
| US06/627,538 US4604884A (en) | 1983-07-04 | 1984-07-03 | Twisting apparatus of root canal reamer or file material and method for manufacturing root canal reamer or file |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58120268A JPS6016324A (en) | 1983-07-04 | 1983-07-04 | Device for twisting extremely thin square rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6016324A JPS6016324A (en) | 1985-01-28 |
| JPS6222733B2 true JPS6222733B2 (en) | 1987-05-19 |
Family
ID=14782008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58120268A Granted JPS6016324A (en) | 1983-07-04 | 1983-07-04 | Device for twisting extremely thin square rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6016324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01298554A (en) * | 1988-05-26 | 1989-12-01 | Sanyo Electric Co Ltd | Device for switching traveling direction of tape |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067532A (en) * | 2016-11-15 | 2018-05-25 | 宁波润轴汽配有限公司 | A kind of automobile twisted bar forming machine |
-
1983
- 1983-07-04 JP JP58120268A patent/JPS6016324A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01298554A (en) * | 1988-05-26 | 1989-12-01 | Sanyo Electric Co Ltd | Device for switching traveling direction of tape |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6016324A (en) | 1985-01-28 |
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