JPH01281836A - Holding method for work in heating process and work holding apparatus used in heating process - Google Patents
Holding method for work in heating process and work holding apparatus used in heating processInfo
- Publication number
- JPH01281836A JPH01281836A JP63112189A JP11218988A JPH01281836A JP H01281836 A JPH01281836 A JP H01281836A JP 63112189 A JP63112189 A JP 63112189A JP 11218988 A JP11218988 A JP 11218988A JP H01281836 A JPH01281836 A JP H01281836A
- Authority
- JP
- Japan
- Prior art keywords
- work
- workpiece
- holding part
- holding
- thermal expansion
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 9
- 238000003754 machining Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
- Gripping On Spindles (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ）、産業上の利用分野
本発明は−、セラミック等のワークを加熱加工する際に
適用するに好適な加熱加工におけるワークの保持方法及
び該加工に使用するワーク保持治具に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention provides - a method for holding a workpiece in heating processing suitable for applying when heating a workpiece such as a ceramic, and a workpiece used in the processing. Regarding the holding jig.
（ｂ）、従来の技術 第３図は従来のワークの加熱加工方法を示す図である。(b), conventional technology FIG. 3 is a diagram showing a conventional workpiece heating processing method.
従来、セラミック等からなるワーク１を旋削加工する場
合には、第３図に示すように、ワーク保持治具にワーク
１を挟圧保持し、その状態でワーク１を加熱して加工を
行っていた。Conventionally, when turning a workpiece 1 made of ceramic or the like, the workpiece 1 is held under pressure in a workpiece holding jig, and the workpiece 1 is heated in that state to perform the turning process, as shown in Fig. 3. Ta.
（Ｃ）６発明が解決しようとする問題点ワーク保持治具
２は、ワーク保持部３とワーク締結部５とがネジ３ａを
介して螺合締結しており、ワーク１；よ、ワーク保持部
３とワーク締結部５との間に保持されろ形で加工される
。こうした方法では、ワーク１が加熱されると、ワーク
１と共にワーク保持治具２も加熱されるので、ワーク１
とワーク保持治具２を構成する材料の熱膨張率の差で、
ワーク保持部３とワーク締結部５間の間隔Ｌ１が、ワー
ク１の厚さＬ２よりも大きくなり、ワーク１を適正に保
持することが出来なくなる不都合が生じる。(C) 6 Problems to be Solved by the Invention In the work holding jig 2, the work holding part 3 and the work fastening part 5 are screwed together via the screw 3a. 3 and the workpiece fastening part 5 and processed into a filter shape. In this method, when the workpiece 1 is heated, the workpiece holding jig 2 is also heated together with the workpiece 1.
Due to the difference in coefficient of thermal expansion of the material constituting the work holding jig 2,
The distance L1 between the workpiece holding part 3 and the workpiece fastening part 5 becomes larger than the thickness L2 of the workpiece 1, resulting in the inconvenience that the workpiece 1 cannot be held properly.
本発明は、前述の欠点を解消すべく、ワークとワーク保
持治具との間に熱膨張率に差があっても、適正な状態で
ワークを保持することが出来る加Ｂ加工におけるワーク
の保持方法及び該加工に使用するワーク保持治具を提供
することを目的とするものである。In order to solve the above-mentioned drawbacks, the present invention has been developed to hold a workpiece in a machining process B, which can hold the workpiece in an appropriate state even if there is a difference in thermal expansion coefficient between the workpiece and the workpiece holding jig. The object of the present invention is to provide a method and a workpiece holding jig used for the processing.
（ｄ）０問題点を解決するための手段
即ち、本発明のうち、ワークの保持方法の発明は、ワー
ク（１）を、該ワーク（１）とは熱膨張率の異なるワー
ク保持治具（２）のワーク保持部（６）とワーク押え部
（７）との間に挟圧保持し、その状態でワーク （１）
を加熱して加工を行う際に、ワーク保持部（６）とワー
ク押え部（７）を相対的に、−ワークの押圧方向である
矢印ＡＳＢ方向等に移動自在に支持し、その状態で押圧
手段（９）によりワーク保持治具（２）を介してワーク
（１）に押圧力を作用きせて、該ワーク （１）をワー
ク保持部（６）とワーク押え部（７）間に、加熱により
ワーク保持部（６）とワーク押え部（７）間の間隔（Ｌ
ｌ）が狭ばまる方向に変化するように保持して構成され
る。(d) Means for solving the zero problem, that is, the invention of the workpiece holding method of the present invention is to hold the workpiece (1) with a workpiece holding jig (with a coefficient of thermal expansion different from that of the workpiece (1)). The workpiece (1) is held under pressure between the workpiece holding part (6) and the workpiece holding part (7) in 2).
When processing by heating, the workpiece holding part (6) and workpiece holding part (7) are supported relatively movably in the direction of arrow ASB, which is the pressing direction of the workpiece, and the workpiece is pressed in this state. The means (9) applies a pressing force to the workpiece (1) through the workpiece holding jig (2) to heat the workpiece (1) between the workpiece holding part (6) and the workpiece holding part (7). The distance (L) between the work holding part (6) and the work holding part (7) is
l) is held so that it changes in the direction of narrowing.
また、本発明のうち、ワーク保持治具の発明は、係合手
段（６ｂ）が先端に設けられたワーク保持部（６）を有
し、該ワーク保持部（６）に対してワーク押え部（７）
を、前記係合手段（６ｂ）を介してワークの押圧保持方
向に移動自在に嵌入係合して構成される。Further, among the present invention, the invention of the work holding jig has a work holding part (6) with an engaging means (6b) provided at the tip, and a work holding part is attached to the work holding part (6). (7)
are fitted and engaged so as to be movable in the pressing and holding direction of the work via the engaging means (6b).
なお、括弧内の番号等は、図面における対応する要素を
示す、便宜的なものであり、従って、本記述は図面上の
記載に限定拘束されるものではない。以下のｒ （ｅ）
、作用」の欄についても同様である。Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. r (e) below
The same applies to the column ``, action''.
（ｅ）０作用
上記した構成により、本発明は、ワーク （１）の加熱
の結果生じる熱膨張は、ワーク保持治具（２）のワーク
保持部（６）とワーク押え部（７）間の間隔（Ｌｌ）を
狭くして、より強固にワーク（１）を保持するように作
用する。(e) Zero effect With the above-described configuration, the present invention is capable of reducing thermal expansion caused by heating of the workpiece (1) between the workpiece holding part (6) and the workpiece holding part (7) of the workpiece holding jig (2). It acts to narrow the interval (Ll) and hold the workpiece (1) more firmly.
（ｆ）、実施例 以下、本発明の実施例を図面に基づき説明する。(f), Example Embodiments of the present invention will be described below based on the drawings.
第１図は本発明による加熱加工におけるワークの保持方
法の一実施例を示す図、
第２図はワーク保持治具の一例を示す図である。FIG. 1 is a diagram showing an example of a workpiece holding method in heat processing according to the present invention, and FIG. 2 is a diagram showing an example of a workpiece holding jig.
ワーク保持治具２は、第１図に示すように、棒状に形成
されたワーク保持部６を有しており、ワーク保持部６の
図中左端はチャック４に回転駆動自在に支持されている
。ワーク保持部６の中程にはワーク突当面６ａが形成さ
れており、ワーク突当面６ａか−らは、ワーク支持棒６
ｂが図中右方に突出する形で形成されている。ワーク支
持棒６ｂには加工すべきワークが、該ワーク１に貫通穿
設された支持穴１ａを介して嵌入係合支持されており、
更にワーク１の右方には、ワーク押え部７が設けられて
いる。ワーク押え部７には摺動穴７ａが穿設されており
、摺動穴７ａにはワーク支持４６ｂが、ワーク押え部７
を該ワーク支持棒６ｂに沿って矢印Ａ１Ｂ方向に摺動自
在なる形に嵌入係合している。ワーク押丸部７の右端面
には、センタ穴７ｂが形成されており、センタ穴７ｂに
はテールストック９に回転自在に設けられた回転センタ
９ａが、先端９ｂを当接係合させた形で設けられている
。As shown in FIG. 1, the workpiece holding jig 2 has a rod-shaped workpiece holding part 6, and the left end of the workpiece holding part 6 in the figure is rotatably supported by the chuck 4. . A workpiece abutment surface 6a is formed in the middle of the workpiece holding portion 6, and from the workpiece abutment surface 6a, a workpiece support rod 6 is formed.
b is formed to protrude to the right in the figure. A workpiece to be machined is fitted into and supported by the workpiece support rod 6b through a support hole 1a formed through the workpiece 1.
Furthermore, a work holding part 7 is provided on the right side of the work 1. A sliding hole 7a is bored in the work holding part 7, and a work support 46b is installed in the sliding hole 7a.
are fitted and engaged in such a manner that they can freely slide in the direction of arrow A1B along the workpiece support rod 6b. A center hole 7b is formed in the right end surface of the workpiece pressing round part 7, and a rotation center 9a rotatably provided on the tail stock 9 is formed in the center hole 7b with a tip 9b abuttingly engaged with the center hole 7b. It is set in.
ワーク保持治具２等は以上のような構成を有するので、
セラミック等からなるワーク１を旋削加工する場合には
、まずワーク保持治具２のワーク保持部３の、第１図左
端部をチャック４に保持させ、その状態でワーク１を、
該ワーク１の支持穴１ａにワーク支持棒６ｂを嵌入係合
させ、ワーク１の左側面１ｂがワーク突当面６ａに当接
するまで矢印Ａ方向に移動させる。次に、ワーク押え部
７を同様に、ワーク支持棒６ｂを摺動穴７ａに嵌入させ
る形で、そのワーク突当面７Ｃがワーク右側面ＩＣに当
接係合するまで移動させる。この状態で、テールストッ
ク９を矢印Ａ方向に移動させて回転センタ９ａの先端９
ｂをワーク押え部７のセンタ穴７ｂに嵌入係合させ、更
に所定圧力だけワーク押え部７を矢印Ａ方向に押圧する
。すると、該押圧力によりワーク１は、ワーク保持部６
とワーク押え部７のワーク突当面６ａ１７ｃ間に保持さ
れる。Since the work holding jig 2 etc. has the above configuration,
When turning a workpiece 1 made of ceramic or the like, first the left end of the workpiece holding part 3 of the workpiece holding jig 2 in FIG. 1 is held by the chuck 4, and in that state, the workpiece 1 is
The workpiece support rod 6b is fitted into the support hole 1a of the workpiece 1, and the workpiece 1 is moved in the direction of arrow A until the left side surface 1b of the workpiece 1 comes into contact with the workpiece abutment surface 6a. Next, the work holding portion 7 is similarly moved so that the work supporting rod 6b is inserted into the sliding hole 7a until the work abutting surface 7C abuts and engages with the right side IC of the work. In this state, move the tail stock 9 in the direction of arrow A to
b is fitted into the center hole 7b of the work holding part 7, and the work holding part 7 is further pressed in the direction of arrow A by a predetermined pressure. Then, due to the pressing force, the workpiece 1 is moved to the workpiece holding part 6
and the workpiece abutting surface 6a17c of the workpiece holding part 7.
この状態で、チャック４を回転駆動させろと、ワーク保
持治具２のワーク保持部６、ワーク押え部７、回転セン
タ９ａ、更に該ワーク保持部６及びワーク押え部７に挟
圧保持されろワーク１は共に回転を開始する。そこで、
適宜な加熱手段でワーク１を加熱し、当該加熱状態でワ
ーク１を加工するが、この際、ワーク１に与えられた熱
は、該ワーク１を保−持するワーク保持部６及びワーク
押え部７に伝達され、それ等も加熱されろことになる。In this state, when the chuck 4 is rotationally driven, the workpiece is held under pressure by the workpiece holding part 6, workpiece holding part 7, and rotation center 9a of the workpiece holding jig 2, and further by the workpiece holding part 6 and the workpiece holding part 7. 1 start rotating together. Therefore,
The workpiece 1 is heated by an appropriate heating means, and the workpiece 1 is processed in the heated state. At this time, the heat given to the workpiece 1 is transferred to the workpiece holding part 6 that holds the workpiece 1 and the workpiece holding part. 7, and they will also be heated.
すると、ワーク１のみならず、ワーク保持部６及びワー
ク押え部７も、矢印Ａ、Ｂ方向に熱膨張を生じるが、ワ
ーク保持部６及びワーク押え部７のそれぞれの端部がチ
ャック４及び回転センタ９ａにより矢印Ａ、Ｂ方向の移
動が拘束された形で支持されているので、ワーク１及び
ワーク保持部６、ワーク押え部７の熱膨張率の相違の有
無に拘わらず、ワーク保持部６とワーク押え部７に生じ
ろ熱膨張は全てワーク突当面６ａ、７０間の間隔Ｌ １
を狭くする方向に発生する。一方、ワーク１自体の矢印
Ａ、Ｂ方向の厚さＬ２も熱膨張により大きくなることか
ら、加熱動作によりワーク１は、ワーク保持部６及びワ
ーク押え部７により、より強固に保持されることとなる
。Then, not only the work 1 but also the work holding part 6 and the work holding part 7 undergo thermal expansion in the directions of arrows A and B, but the respective ends of the work holding part 6 and the work holding part 7 are exposed to the chuck 4 and the rotating part. Since the center 9a supports the workpiece 1 with its movement in the directions of arrows A and B being restricted, the workpiece holder 6 is supported by the center 9a, regardless of whether there is a difference in thermal expansion coefficient between the workpiece 1, the workpiece holding part 6, and the workpiece holding part 7. All of the thermal expansion that occurs in the workpiece holding part 7 is caused by the distance L1 between the workpiece abutment surfaces 6a and 70.
Occurs in the direction of narrowing. On the other hand, since the thickness L2 of the work 1 itself in the directions of arrows A and B also increases due to thermal expansion, the work 1 is held more firmly by the work holding part 6 and the work holding part 7 due to the heating operation. Become.
なお、熱膨張によるワーク１の保持力が規定値以上にな
ると、ワーク１が損傷したり、ワーク保持治具２が座屈
する危険性が有るが、そうした事態を防止するために、
所定値以上の圧縮力が回転センタ９ａに作用した場合に
は、テールストック９を矢印Ｂ方向に逃がしたり、回転
センタ９ａ自体を矢印Ａ、Ｂ方向に、バネ等を用いて弾
性的に支持するように構成することも出来る。Note that if the holding force of the workpiece 1 due to thermal expansion exceeds a specified value, there is a risk that the workpiece 1 may be damaged or the workpiece holding jig 2 may buckle; however, in order to prevent such a situation,
When a compressive force of a predetermined value or more is applied to the rotation center 9a, the tail stock 9 is released in the direction of arrow B, or the rotation center 9a itself is elastically supported in the directions of arrows A and B using a spring or the like. It can also be configured as follows.
なお、ワーク保持治具２の矢印Ａ、Ｂ方向の熱膨張量は
、ワーク保持治具２内に蓄積された熱量に依存するので
、過大な熱膨張が生じないように、第２図に示すように
、例えばワーク押え部７に放熱用フィン７ｄを設けるな
ど、適宜な放熱手段を設けるようにすることも当然可能
である。Note that the amount of thermal expansion of the workpiece holding jig 2 in the directions of arrows A and B depends on the amount of heat accumulated in the workpiece holding jig 2, so in order to prevent excessive thermal expansion from occurring, the amount of thermal expansion is shown in Fig. 2. Naturally, it is also possible to provide appropriate heat radiation means, such as providing heat radiation fins 7d on the workpiece holding part 7, for example.
なお、上述の実施例は、本発明による加工方法を旋削加
工に適用した場合について述べたが、本発明は、旋削加
工に限らず、ワーク１をその熱膨張率の相違するワーク
保持治具２で保持して加工する、全ての用途に適用する
ことが出来ることは勿論である。In addition, although the above-mentioned embodiment described the case where the processing method according to the present invention is applied to turning processing, the present invention is not limited to turning processing. It goes without saying that it can be applied to all applications in which it is held and processed.
（ｇ）０発明の効果
以上、説明したように、本発明によれば、ワーク１を、
該ワーク１とは熱膨張率の異なるワーク保持治具２のワ
ーク保持部６とワーク押左部７との間に挟圧保持し、そ
の状態でワーク１を加熱して加工を行う際に、ワーク保
持部６とワーク押え部７を相対的に、ワークの押圧方向
である矢印Ａ、Ｂ方向に移動自在に支持し、その状態で
テールストック９等の押圧手段によりワーク保持治具２
を介してワーク１に押圧力を作用させて、該ワーク１を
ワーク保持部６とワーク押え部７間に、加熱によりワー
ク保持部６とワーク押え部７間の間隔Ｌ１が狭ばまる方
向に変化するように保持して構成したので、ワーク１と
ワーク保持治具２との間に熱膨張率に相違があっても、
ワーク１は加熱により、より強固に保持される傾向とな
り、ワーク１の保持力が減少して適正な加工が行えなく
なる事態の発生を未然に防止することが出来る。(g) 0 Effects of the Invention As explained above, according to the present invention, the work 1 can be
When the workpiece 1 is held under pressure between the workpiece holding part 6 and the workpiece pushing part 7 of the workpiece holding jig 2, which has a different coefficient of thermal expansion from the workpiece 1, and the workpiece 1 is heated and processed in this state, The workpiece holding part 6 and the workpiece holding part 7 are supported relatively movably in the directions of arrows A and B, which are the pressing directions of the workpiece, and in this state, the workpiece holding jig 2 is moved by a pressing means such as a tail stock 9.
By applying a pressing force to the workpiece 1 through Since the structure is such that they are held so that they change, even if there is a difference in the coefficient of thermal expansion between the work 1 and the work holding jig 2,
The workpiece 1 tends to be held more firmly by heating, and it is possible to prevent a situation in which the holding force of the workpiece 1 is reduced and proper machining cannot be performed.
また、ワーク支持棒６ｂ等の係合手段が先端に設けられ
たワーク保持部６を有し、該ワーク保持部６に対してワ
ーク押え部７を、前記係合手段を介してワークの押圧保
持方向（矢印Ａ、Ｂ方向）に移動自在に嵌入係合して構
成したので、ワーク保持治具２に生じろ熱膨張を、ワー
ク保持部６とワーク押え部７間の間隔Ｌ１を狭くする方
向に発生させるようにすることが可能となり、ワーク１
の加熱加工を、ワーク１の保持力を維持した形で行うこ
とが出来る。The work holding part 6 is provided with an engaging means such as a work supporting rod 6b at its tip, and a work holding part 7 is pressed against the work holding part 6 to hold the work by pressing it through the engaging means. Since they are configured to be fitted and engaged so as to be movable in the directions (directions of arrows A and B), thermal expansion occurring in the workpiece holding jig 2 can be reduced in the direction of narrowing the distance L1 between the workpiece holding part 6 and the workpiece holding part 7. It is now possible to generate the workpiece 1
The heating process can be performed while maintaining the holding force of the workpiece 1.
更に、ワーク保持治Ａ２に、該ワーク保持治具２に蓄積
されろ熱を外部に放熱するための放熱フィン７ｄ等の放
熱手段を形成した場合には、ワーク保持治具２に生じる
熱膨張量を適正に制御することが可能となる。Furthermore, when the workpiece holding jig A2 is provided with a heat dissipation means such as a heat dissipation fin 7d for dissipating the heat accumulated in the workpiece holding jig 2 to the outside, the amount of thermal expansion generated in the workpiece holding jig 2 It becomes possible to appropriately control.
第１図は本発明による加熱加工におけるワークの保持方
法の一実施例を示す図、
第２図はワーク保持治具の一例を示す図、第３図は従来
のワークの加熱加工方法を示す図である。
１・・・・・・ワーク
２・・・・・・ワーク保持治具
６・・・・・・ワーク保持部
６ｂ・・・・・・係合手段（ワーク支持棒）７・・・・
・・ワーク押え部
７ｄ・・・・・・放熱手段（放熱フィン）９・・・・・
・押圧手段（テールストック）Ｌｌ・・・・・・間隔
出願人 工業技術院長 飯塚 幸三
ヤマザキマザック株式会社Fig. 1 is a diagram showing an example of a method for holding a workpiece in heat processing according to the present invention, Fig. 2 is a diagram showing an example of a workpiece holding jig, and Fig. 3 is a diagram showing a conventional method for heat processing a workpiece. It is. 1... Work 2... Work holding jig 6... Work holding part 6b... Engaging means (work supporting rod) 7...
...Work holding part 7d... Heat dissipation means (radiation fin) 9...
・Press means (tail stock) Ll・・・・・・Interval Applicant: Kozo Iizuka, Director, Agency of Industrial Science and Technology Yamazaki Mazak Co., Ltd.
Claims (1)
ク保持治具のワーク保持部とワーク押え部との間に挟圧
保持し、 その状態でワークを加熱して加工を行う際に、 ワーク保持部とワーク押え部を相対的に、 ワークの押圧方向に移動自在に支持し、 その状態で押圧手段によりワーク保持治具を介してワー
クに押圧力を作用させて、該ワークをワーク保持部とワ
ーク押え部間に、加熱によりワーク保持部とワーク押え
部間の間隔が狭ばまる方向に変化するように保持して構
成した加熱加工におけるワークの保持方法。（２）、係
合手段が先端に設けられたワーク保持部を有し、 該ワーク保持部に対してワーク押え部を、 前記係合手段を介してワークの押圧保持方向に移動自在
に嵌入係合して構成した加熱加工に使用するワーク保持
治具。 （３）、ワーク保持治具に、該ワーク保持治具に蓄積さ
れる熱を外部に放熱するための放熱手段を形成して構成
した特許請求の範囲第２項記載の加熱加工に使用するワ
ーク保持治具。[Claims] (1) A workpiece is held under pressure between a workpiece holding part and a workpiece holding part of a workpiece holding jig having a different coefficient of thermal expansion from that of the workpiece, and the workpiece is heated in this state. When performing machining, the work holding part and the work holding part are supported relatively movably in the direction in which the work is pressed, and in this state, a pressing force is applied to the work via the work holding jig by the pressing means. A method for holding a workpiece in heating processing, wherein the workpiece is held between a workpiece holding part and a workpiece holding part so that the distance between the workpiece holding part and the workpiece holding part changes in the direction of narrowing due to heating. (2) The engaging means has a work holding part provided at the tip, and the work holding part is fitted into the work holding part so as to be movable in a pressing and holding direction of the work via the engaging means. A workpiece holding jig used for heating processing. (3) A workpiece used for heating processing according to claim 2, wherein the workpiece holding jig is provided with a heat radiating means for radiating heat accumulated in the workpiece holding jig to the outside. Holding jig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63112189A JPH01281836A (en) | 1988-05-09 | 1988-05-09 | Holding method for work in heating process and work holding apparatus used in heating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63112189A JPH01281836A (en) | 1988-05-09 | 1988-05-09 | Holding method for work in heating process and work holding apparatus used in heating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01281836A true JPH01281836A (en) | 1989-11-13 |
Family
ID=14580486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63112189A Pending JPH01281836A (en) | 1988-05-09 | 1988-05-09 | Holding method for work in heating process and work holding apparatus used in heating process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01281836A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58129403U (en) * | 1982-02-24 | 1983-09-01 | 株式会社日立ホームテック | gas stove |
| JPS6099402U (en) * | 1983-12-09 | 1985-07-06 | 国際什器株式会社 | gas table |
| JPS62141106U (en) * | 1986-02-27 | 1987-09-05 |
-
1988
- 1988-05-09 JP JP63112189A patent/JPH01281836A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58129403U (en) * | 1982-02-24 | 1983-09-01 | 株式会社日立ホームテック | gas stove |
| JPS6099402U (en) * | 1983-12-09 | 1985-07-06 | 国際什器株式会社 | gas table |
| JPS62141106U (en) * | 1986-02-27 | 1987-09-05 |
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