JPH042727Y2 - - Google Patents
Info
- Publication number
- JPH042727Y2 JPH042727Y2 JP1986072515U JP7251586U JPH042727Y2 JP H042727 Y2 JPH042727 Y2 JP H042727Y2 JP 1986072515 U JP1986072515 U JP 1986072515U JP 7251586 U JP7251586 U JP 7251586U JP H042727 Y2 JPH042727 Y2 JP H042727Y2
- Authority
- JP
- Japan
- Prior art keywords
- positioning
- tool
- rotary tool
- shank
- cutting edge
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
- Multi-Process Working Machines And Systems (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は、NC旋盤等の刃物台に着脱される回
転工具装置の位置決め構造に関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a positioning structure for a rotary tool device that is attached to and detached from a tool rest of an NC lathe or the like.
「従来の技術」
従来、刃物台に着脱される回転工具装置を位置
決めする場合、例えば第１図において、刃物台に
固結すべく回転工具装置に突設したシヤンク６０
と、このシヤンクの近傍に設けた位置決め突起５
８と位置決め溝４８により行なうものが一般的で
あつた。``Prior Art'' Conventionally, when positioning a rotary tool device to be attached to and removed from a tool post, for example, as shown in FIG.
and a positioning protrusion 5 provided near this shank.
8 and positioning grooves 48 were common.
「考案が解決しようとする問題点」
しかしながら、このような従来の技術では、シ
ヤンクの近傍に刃物の作用部がある場合は良い
が、そこから離れるに従い刃先の位置決め精度が
悪くなり、加工精度に悪影響を及ぼすという問題
点があつた。``Problem that the invention seeks to solve'' However, with such conventional technology, it is good if the cutting tool's working part is near the shank, but the positioning accuracy of the cutting edge deteriorates as it moves away from the shank, leading to problems with machining accuracy. There was a problem that it had a negative impact.
本考案は、このような従来の問題点に着目して
なされたもので、回転工具装置の刃先の位置決め
精度を向上させる位置決め構造を提供することを
目的としている。 The present invention has been made in view of these conventional problems, and aims to provide a positioning structure that improves the positioning accuracy of the cutting edge of a rotary tool device.
「問題点を解決するための手段」
かかる目的を達成するための本考案の要旨とす
るところは、
刃物台に着脱される回転工具装置の位置決め構
造であつて、回転工具装置は、回転工具の保持部
と、駆動力伝達機構と、駆動力受入部と、刃物台
に固結されるシヤンクとを有し、前記シヤンクの
中心線を挟んで回転工具の刃先と対抗する位置
で、少なくともシヤンク中心線と刃先間距離以上
に前記シヤンク中心線より離間した位置に位置決
め係合部を設け、前記駆動力伝達機構は、刃物台
の駆動を伝達する連結凹部と噛合する連結凸部
と、その連結凸部の形成された入力部材の他端に
形成される歯車によつて回転工具を駆動し、工具
刃先の振れ精度を位置決め精度以下にして精度を
高めるように構成した回転工具装置の位置決め構
造に存する。``Means for Solving the Problems'' The gist of the present invention to achieve the above object is a positioning structure for a rotary tool device that is attached to and detached from a tool post, and the rotary tool device is a It has a holding part, a driving force transmission mechanism, a driving force receiving part, and a shank fixed to the tool rest, and at least the center of the shank is located at a position opposite to the cutting edge of the rotary tool across the center line of the shank. A positioning engagement portion is provided at a position spaced apart from the shank center line by a distance greater than the distance between the line and the cutting edge, and the driving force transmission mechanism includes a connecting protrusion that meshes with a connecting recess that transmits the drive of the tool post, and the connecting protrusion. The present invention resides in a positioning structure for a rotary tool device configured to drive a rotary tool by a gear formed at the other end of an input member formed with a part, and to increase accuracy by reducing the runout accuracy of the tool cutting edge to less than the positioning accuracy. .
「作用」
しかして、回転工具装置はシヤンクと、そこか
ら最も離間した位置に設けられた位置決め係合部
とにより位置決めされ、長間隔を介して配置され
たシヤンクと位置決め係合部とによることから、
回転工具装置の刃先の位置決め精度が格段に向上
するものである。"Function" Therefore, the rotary tool device is positioned by the shank and the positioning engagement part provided at the farthest position from the shank, and the shank and the positioning engagement part are arranged at a long distance. ,
This greatly improves the positioning accuracy of the cutting edge of the rotary tool device.
「実施例」
以下、図面に基づき本考案の一実施例を説明す
る。“Embodiment” An embodiment of the present invention will be described below based on the drawings.
第１図〜第４図は本考案の一実施例を示してい
る。 1 to 4 show an embodiment of the present invention.
第２図に示すように、NC旋盤のクロススライ
ドＡ上に設置された刃物台１０に工具保持ベース
２０（所謂、タレツト）が設けられて成り、電動
機により駆動される駆動歯車２１が工具保持ベー
ス２０内部の略中心に配設され、外周には複数の
工具保持部３０，３０…が配置され、工具保持部
３０には第４図に示すようなそれぞれ同一の構成
の着脱機構４０が設けられている。旋削用工具の
ほかに一部の工具保持部３０，３０…には第１図
に示すような回転工具装置５０が着脱されるもの
である。回転工具装置５０が着脱されるべき工具
保持部３０に対応し工具保持ベース２０の中心に
寄せ、工具保持ベース２０から位置決めピン２２
が突設されている。 As shown in Fig. 2, a tool holding base 20 (so-called turret) is provided on a tool rest 10 installed on a cross slide A of an NC lathe, and a driving gear 21 driven by an electric motor is attached to the tool holding base. A plurality of tool holding parts 30, 30, . ing. In addition to the turning tool, a rotary tool device 50 as shown in FIG. 1 is attached to and detached from some of the tool holders 30, 30, . . . . The rotary tool device 50 is moved to the center of the tool holding base 20 corresponding to the tool holding part 30 to be attached or detached, and the positioning pin 22 is moved from the tool holding base 20
is installed protrudingly.
位置決めピン２２は基台２２ａが工具保持ベー
ス２０に当接位置決めして固定され、頭部２２ｂ
の４隅が面取りされて断面がダイヤモンド形をし
ている。 The positioning pin 22 is fixed with the base 22a in contact with the tool holding base 20, and the head 22b
Its four corners are chamfered and its cross section is diamond-shaped.
さらに工具保持ベース２０には、駆動歯車２１
に噛合するクラツチ歯車２３，２３…およびそれ
に噛合する出力歯車２４，２４…が駆動歯車２１
の周囲に複数配置されている。出力歯車２４の出
力軸は工具保持ベース２０の前面に突出し、そこ
に連結凹部２５が形成されている。 Further, the tool holding base 20 includes a drive gear 21.
Clutch gears 23, 23... that mesh with the drive gear 21, and output gears 24, 24... that mesh with the clutch gears 23, 23... and the output gears 24, 24... that mesh with the drive gear 21.
There are multiple locations around the area. The output shaft of the output gear 24 protrudes from the front surface of the tool holding base 20, and a connecting recess 25 is formed there.
クラツチ歯車２３と駆動歯車２１とは常時噛合
しているが、クラツチ歯車２３と出力歯車２４と
はクラツチ歯車２３を軸方向に移動させて切換え
ることにより係脱するものである。 The clutch gear 23 and the drive gear 21 are always in mesh with each other, but the clutch gear 23 and the output gear 24 are engaged and disengaged by moving the clutch gear 23 in the axial direction.
着脱機構４０は第４図に示すように、テーパー
孔を有する受部材４１と、皿ばね４２に付勢され
た保持部材４３とより成る。保持部材４３は案内
基筒４４内に進退部材４５が進退可能に支持され
て成る。 As shown in FIG. 4, the attachment/detachment mechanism 40 includes a receiving member 41 having a tapered hole and a holding member 43 biased by a disc spring 42. The holding member 43 is formed by supporting a reciprocating member 45 in a guide base cylinder 44 so as to be movable in a retractable manner.
進退部材４５の先端にはロツクボール４６を拡
巾位置させる頭部４７が形成され、進退部材４５
はばね４５ａにより後退方向に付勢されている
（中心線上部）。皿ばね４２は受部材４１と案内基
筒４４の基部ブロツク４４ａとの間に挾持される
ように介装されている。また、受部材４１の外周
側の端には位置決め溝４８（第１図，第２図）が
刻設されている。この位置決め溝４８は旋削用工
具の位置決め用として使用されるが、回転工具装
置５０には使用されない。 A head 47 is formed at the tip of the advancing/retracting member 45 for positioning the lock ball 46 in a wider position, and the advancing/retracting member 45
is urged in the backward direction by a spring 45a (above the center line). The disc spring 42 is interposed between the receiving member 41 and the base block 44a of the guide base cylinder 44 so as to be held therebetween. Furthermore, a positioning groove 48 (FIGS. 1 and 2) is carved in the outer peripheral end of the receiving member 41. This positioning groove 48 is used for positioning a turning tool, but is not used for the rotary tool device 50.
第１図および第３図に示すように、回転工具装
置５０は、ユニツトベース５１の先端部に工具保
持部材５２が回転可能に支持され、基部に入力部
材５３が設けられており、工具保持部材５２はベ
アリング５２ａ，５２ｂでユニツトベース５１に
支持され、入力部材５３はベアリング５３ａ，５
３ｂでユニツトベース５１に支持されている。工
具保持部材５２の基部に固設された傘歯車５４に
入力部材５３の末端に固設された傘歯車５５が噛
合している。入力部材５３の先端には出力歯車２
４の連結凹部２５に係合可能な連結凸部５６が形
成されている。 As shown in FIGS. 1 and 3, the rotary tool device 50 includes a tool holding member 52 rotatably supported at the tip of a unit base 51, an input member 53 provided at the base, and a tool holding member 52 rotatably supported at the tip of a unit base 51. 52 is supported by the unit base 51 with bearings 52a, 52b, and the input member 53 is supported with bearings 53a, 52b.
3b is supported by the unit base 51. A bevel gear 54 fixed to the base of the tool holding member 52 meshes with a bevel gear 55 fixed to the end of the input member 53. An output gear 2 is provided at the tip of the input member 53.
A connecting protrusion 56 that can be engaged with the connecting recess 25 of No. 4 is formed.
回転工具装置５０の基部の裏側の一端には工具
保持ベース２０の位置決めピン２２が嵌合する位
置決め穴５７が穿設され、他端側の裏側にはシヤ
ンク６０が突設されている。 A positioning hole 57 into which the positioning pin 22 of the tool holding base 20 fits is formed at one end of the back side of the base of the rotary tool device 50, and a shank 60 is provided protruding from the back side of the other end.
シヤンク６０の外形６１は着脱機構４０の受部
材４１のテーパー孔に嵌合するくさび形をしてお
り、着脱機構４０の進退部材４５の頭部４７を挿
通させる嵌合孔６２を有し、嵌合孔６２の内周に
はロツクボール４６の係合凹溝６２ａが形成され
ている。 The outer shape 61 of the shank 60 has a wedge shape that fits into the tapered hole of the receiving member 41 of the attachment/detachment mechanism 40, and has a fitting hole 62 through which the head 47 of the reciprocating member 45 of the attachment/detachment mechanism 40 is inserted. An engagement groove 62a for the lock ball 46 is formed on the inner periphery of the matching hole 62.
次に作用を説明する。 Next, the action will be explained.
回転工具装置５０はシヤンク６０を介して工具
保持ベース２０の工具保持部３０の着脱機構４０
に保持されており、容易に着脱可能である。 The rotary tool device 50 connects the tool holding portion 30 of the tool holding base 20 to the attachment/detachment mechanism 40 via the shank 60.
It is held in place and can be easily attached and detached.
第４図の中心線上半分に示すように、シヤンク
６０を着脱機構４０の受部材４１のテーパー孔に
嵌合させ、進退部材４５の頭部４７が後退してい
てロツクボール４６が拡巾移動させられ係合凹溝
６２ａに嵌合しているとき、シヤンク６０は工具
保持ベース２０に固く保持されている。 As shown in the upper half of the center line of FIG. 4, the shank 60 is fitted into the tapered hole of the receiving member 41 of the attachment/detachment mechanism 40, and the head 47 of the reciprocating member 45 is retracted and the lock ball 46 is moved to widen its width. When fitted into the engagement groove 62a, the shank 60 is firmly held by the tool holding base 20.
回転工具装置５０のシヤンク６０から最も離間
した位置であるユニツトベース５１の端では、位
置決め穴５７に工具保持ベース２０に突設された
位置決めピン２２が嵌合し、長間隔をもつて配置
された位置決め穴５７とシヤンク６０とにより回
転工具装置５０の位置が決められている。 At the end of the unit base 51, which is the farthest position from the shank 60 of the rotary tool device 50, the positioning pins 22 protruding from the tool holding base 20 are fitted into the positioning holes 57, and are arranged at long intervals. The position of the rotary tool device 50 is determined by the positioning hole 57 and the shank 60.
第５図は長間隔をもつた位置決め構造により、
工具刃先の図中ｘ方向の許容精度が向上し得るこ
とを説明する模式図である。第５図において、シ
ヤンク６０の中心Ｏと位置決め穴５７中心と、位
置決め突起５８との寸法関係に示すように、工具
Ｂ刃先の許容振れ精度Δxを得るには、従来の位
置決め突起５８で位置決めする場合、この位置で
の位置決め精度ΔX1は許容振れ精度Δx以上の精
度にする必要がある。 Figure 5 shows that due to the positioning structure with long intervals,
FIG. 3 is a schematic diagram illustrating that the tolerance accuracy of the tool cutting edge in the x direction in the figure can be improved. In FIG. 5, as shown in the dimensional relationship between the center O of the shank 60, the center of the positioning hole 57, and the positioning protrusion 58, in order to obtain the allowable runout accuracy Δx of the cutting edge of tool B, positioning is performed using the conventional positioning protrusion 58. In this case, the positioning accuracy ΔX 1 at this position needs to be higher than the allowable runout accuracy Δx.
例えば、図中、工具刃先点０Bと位置決め突起
５８との寸法関係が：／２であれば、位置決め
精度ΔX1＝１／２Δxの精度にしておく必要がある。 For example, in the figure, if the dimensional relationship between the tool cutting edge point 0 B and the positioning protrusion 58 is :/2, then the positioning accuracy ΔX 1 must be set to an accuracy of 1/2Δx.
従つて、工具刃先の位置決め精度に比べて高精度
の位置決め精度を要する。本考案は、工具刃先位
置の精度をピンの位置決め許容値以下の精度にし
ようとするもので、本考案による位置決め穴５７
で位置決めする場合、図の位置での位置決め精度
ΔX2は許容振れ精度Δx以下の精度で済む。Therefore, higher positioning accuracy is required than the positioning accuracy of the tool cutting edge. The present invention aims to make the accuracy of the position of the tool cutting edge less than the pin positioning tolerance, and the positioning hole 57 according to the present invention is
When positioning is performed, the positioning accuracy ΔX 2 at the position shown in the figure needs to be less than or equal to the allowable runout accuracy Δx.
即ち、図中、工具刃先点０Bと位置決め穴５７
との寸法関係が：３／２であれば、刃先の位
置決め精度ΔX＝２／3X2の精度で済む。従つて、
位置決め突起５８に比し、位置決め穴５７で位置
決めしたほうが刃先の位置精度を高精度に出しや
すい。 That is, in the figure, the tool cutting edge point 0 B and the positioning hole 57
If the dimensional relationship is: 3/2, then the positioning accuracy of the cutting edge is ΔX=2/ 3X2 . Therefore,
Compared to the positioning protrusion 58, positioning using the positioning hole 57 makes it easier to achieve high positional accuracy of the blade edge.
回転工具装置５０を外すには、進退部材４５の
後端を押し、第４図の中心線下半分に示すよう
に、ロツクボール４６が頭部４７に形成された逃
がし溝に落ち込むようにすると、頭部４７は係合
凹溝６２ａから抜け出すことができるようにな
り、シヤンク６０を着脱機構４０の受部材４１か
ら抜き出し、回転工具装置５０を工具保持ベース
２０から外すことができる。 To remove the rotary tool device 50, push the rear end of the reciprocating member 45 so that the lock ball 46 falls into the relief groove formed in the head 47, as shown in the lower half of the center line in FIG. The portion 47 can now come out of the engagement groove 62a, the shank 60 can be pulled out from the receiving member 41 of the attachment/detachment mechanism 40, and the rotary tool device 50 can be removed from the tool holding base 20.
回転工具装置５０を装着する場合は、前記とは
逆に、シヤンク６０を着脱機構４０の受部材４１
に嵌合させてから案内基筒４４を後退させ、ロツ
ドボール４６を係合凹溝６２ａに嵌合させること
により行なう。 When installing the rotary tool device 50, contrary to the above, the shank 60 is attached to the receiving member 41 of the attachment/detachment mechanism 40.
This is done by fitting the rod ball 46 into the engagement groove 62a, then retracting the guide base cylinder 44 and fitting the rod ball 46 into the engagement groove 62a.
回転工具装置５０は適宜必要に応じて着脱して
用いられるものであるが、装着した状態でも作業
の必要に応じて必要な回転工具装置５０のみを駆
動する。回転工具装置５０を駆動する場合は、ク
ラツチ歯車２３と出力歯車２４とを噛合させてお
けば、駆動歯車２１の回転が、クラツチ歯車２
３、出力歯車２４、連結凹部２５から回転工具装
置５０の入力部材５３の連結凸部５６に入力し、
入力部材５３の傘歯車５５から傘歯車５４を経て
工具保持部材５２が回動され、工具保持部材５２
に保持されている工具Ｂが駆動される。 The rotary tool device 50 is used by being attached and detached as needed, but even when it is attached, only the necessary rotary tool device 50 is driven according to the needs of the work. When driving the rotary tool device 50, if the clutch gear 23 and the output gear 24 are meshed, the rotation of the drive gear 21 will be controlled by the clutch gear 2.
3. Input from the output gear 24 and the connection concave portion 25 to the connection convex portion 56 of the input member 53 of the rotary tool device 50;
The tool holding member 52 is rotated from the bevel gear 55 of the input member 53 via the bevel gear 54, and the tool holding member 52 is rotated.
The tool B held at is driven.
回転工具装置５０を装着していないとき、ある
いは駆動しないとき、クラツチ歯車２３をその軸
方向に移動させて、出力歯車２４との噛合を断
ち、それにより駆動歯車２１の回転が出力歯車２
４に伝達しなくなり、回転工具装置５０の入力部
材５３が回転することはないので、当該回転工具
装置５０が駆動されることがない。 When the rotary tool device 50 is not installed or not driven, the clutch gear 23 is moved in its axial direction to disengage the output gear 24, so that the rotation of the drive gear 21 is caused by the output gear 2.
Since the input member 53 of the rotary tool device 50 does not rotate, the rotary tool device 50 is not driven.
なお、前記実施例では、回転工具装置の位置決
め係合部は位置決め穴５７で構成したが、逆に突
起で構成してもよいことはいうまでもない。ま
た、回転工具装置の保持した工具の軸線は刃物台
の保持面に垂直な場合もあることもいうまでもな
い。 In the embodiment described above, the positioning engagement portion of the rotary tool device is constituted by the positioning hole 57, but it goes without saying that it may be conversely constituted by a protrusion. Furthermore, it goes without saying that the axis of the tool held by the rotary tool device may be perpendicular to the holding surface of the tool post.
「考案の効果」
本考案に係る回転工具装置の位置決め構造によ
れば、回転工具装置シヤンクの中心線を挟んで回
転工具刃先と対向する位置で、少なくともシヤン
ク中心線と刃先間の距離以上にシヤンク中心線か
ら離間した位置に位置決め係合部を設けて刃物台
に位置決め固定するようにしたから、回転工具装
置の刃先の位置決め精度が上がり、それを備えた
工作機械を加工精度のよいものにすることができ
る。"Effects of the Invention" According to the positioning structure of the rotary tool device according to the present invention, at a position facing the rotary tool cutting edge across the center line of the rotary tool device shank, the shank is at least longer than the distance between the shank center line and the cutting edge. Since the positioning engagement part is provided at a position away from the center line and is positioned and fixed to the tool rest, the positioning accuracy of the cutting edge of the rotary tool device is improved, and the machine tool equipped with it has good machining accuracy. be able to.
第１図〜第４図は本考案の一実施例を示してお
り、第１図は回転工具装置の縦断面図、第２図は
刃物台の正面図、第３図は第１図矢視図、第４
図は着脱機構の縦断面図、第５図は作用説明図で
ある。
Ａ……クロススライド、Ｂ……工具、１０……
刃物台、２０……工具保持ベース、２１……駆動
歯車、２２……位置決めピン、２３……クラツチ
歯車、２４……出力歯車、２５……連結凹部、３
０……工具保持部、４０……着脱機構、４１……
受部材、４５……進退部材、４６……ロツクボー
ル、４８……位置決め溝、５０……回転工具装
置、５１……ユニツトベース、５２……工具保持
部材、５３……入力部材、５６……連結凸部、６
０……シヤンク、６２ａ……係合凹溝。
Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a longitudinal sectional view of the rotary tool device, Figure 2 is a front view of the tool post, and Figure 3 is a view taken from the arrow in Figure 1. Figure, 4th
The figure is a longitudinal cross-sectional view of the attaching/detaching mechanism, and FIG. 5 is an explanatory diagram of its operation. A...Cross slide, B...Tool, 10...
Turret, 20... Tool holding base, 21... Drive gear, 22... Positioning pin, 23... Clutch gear, 24... Output gear, 25... Connection recess, 3
0... Tool holding part, 40... Attachment/detaching mechanism, 41...
Reception member, 45... Advance/retreat member, 46... Lock ball, 48... Positioning groove, 50... Rotary tool device, 51... Unit base, 52... Tool holding member, 53... Input member, 56... Connection Convex portion, 6
0...Shank, 62a...Engagement groove.
Claims (1)
造であつて、回転工具装置は、回転工具の保持部
と、駆動力伝達機構と、駆動力受入部と、刃物台
に固結されるシヤンクとを有し、前記シヤンクの
中心線を挟んで回転工具の刃先と対抗する位置
で、少なくともシヤンク中心線と刃先間距離以上
に前記シヤンク中心線より離間した位置に位置決
め係合部を設け、前記駆動力伝達機構は、刃物台
の駆動を伝達する連結凹部と噛合する連結凸部
と、その連結凸部の形成された入力部材の他端に
形成される歯車によつて回転工具を駆動し、工具
刃先の振れ精度を位置決め精度以下にして精度を
高めるように構成したことを特徴とする回転工具
装置の位置決め構造。 A positioning structure for a rotary tool device that is attached to and detached from a tool post, the rotary tool device including a rotating tool holding section, a driving force transmission mechanism, a driving force receiving section, and a shank that is fixed to the tool post. a positioning engagement portion is provided at a position opposite to the cutting edge of the rotary tool across the center line of the shank, and at a position spaced apart from the shank center line by at least the distance between the shank center line and the cutting edge; The transmission mechanism drives the rotary tool using a connecting protrusion that meshes with a connecting recess that transmits the drive of the tool post, and a gear formed at the other end of the input member where the connecting protrusion is formed, and the tool's cutting edge. A positioning structure for a rotary tool device, characterized in that the positioning structure for a rotary tool device is configured to increase accuracy by making the runout accuracy less than the positioning accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986072515U JPH042727Y2 (en) | 1986-05-14 | 1986-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986072515U JPH042727Y2 (en) | 1986-05-14 | 1986-05-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62184958U JPS62184958U (en) | 1987-11-25 |
| JPH042727Y2 true JPH042727Y2 (en) | 1992-01-30 |
Family
ID=30916031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986072515U Expired JPH042727Y2 (en) | 1986-05-14 | 1986-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042727Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856112U (en) * | 1981-10-12 | 1983-04-16 | 株式会社クボタ | Internal combustion engine piston cooling system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5955652U (en) * | 1982-09-30 | 1984-04-11 | 共立精機株式会社 | Cutting tool rotation stop device |
-
1986
- 1986-05-14 JP JP1986072515U patent/JPH042727Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5856112U (en) * | 1981-10-12 | 1983-04-16 | 株式会社クボタ | Internal combustion engine piston cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62184958U (en) | 1987-11-25 |
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