JPH0640974Y2 - Bolt with ceramic head - Google Patents
Bolt with ceramic headInfo
- Publication number
- JPH0640974Y2 JPH0640974Y2 JP1988125318U JP12531888U JPH0640974Y2 JP H0640974 Y2 JPH0640974 Y2 JP H0640974Y2 JP 1988125318 U JP1988125318 U JP 1988125318U JP 12531888 U JP12531888 U JP 12531888U JP H0640974 Y2 JPH0640974 Y2 JP H0640974Y2
- Authority
- JP
- Japan
- Prior art keywords
- head
- bolt
- intermediate member
- ceramic
- present
- 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 - Lifetime
Links
Landscapes
- Ceramic Products (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、激しい摩耗にさらされる部分等に用いられる
セラミックス製の頭部を持つボルトに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bolt having a head made of ceramics, which is used in a portion exposed to severe wear and the like.
（従来の技術） 例えば粉砕機の内面ライニング材を固定するためのボル
トは、その頭部が激しい摩耗作用を受けるために短期間
で損耗し、しばしば修理、交換を行う必要があった。そ
こで最近ではボルトの材質を耐摩耗性に優れたセラミッ
クス質に変換する試みがなされているが、全体をセラミ
ックス化したものは製造工程が金属製の場合に比較して
複雑化するのでコスト高となるうえ、セラミックス部分
へのねじ切り加工が困難で加工中や使用中にねじ山が欠
け易いという問題があった。(Prior Art) For example, a bolt for fixing an inner surface lining material of a crusher is worn out in a short period of time because its head portion is subjected to a severe wear action, and often needs to be repaired or replaced. Therefore, recently, attempts have been made to convert the material of the bolt into a ceramic material with excellent wear resistance, but the one made entirely of ceramics is more complicated than the manufacturing process when it is made of metal, so the cost is high. In addition, there is a problem that it is difficult to thread the ceramic portion, and the thread is likely to be chipped during processing or during use.
（考案が解決しようとする課題） 本考案はこのような従来の問題を解決して、頭部が摩耗
しにくく、ねじ山が欠けるおそれがないうえに比較的安
価に製造することができるセラミックス製の頭部を持つ
ボルトを目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and is made of a ceramic which is hard to wear on the head, does not have a possibility of lacking a screw thread, and is relatively inexpensive to manufacture. It was completed for the purpose of a bolt with a head.
（課題を解決するための手段） 本考案のセラミックス製の頭部を持つボルトは、セラミ
ックス製の頭部と、ねじが形成された金属製の軸部と、
それらの中間に位置するアルミニウム製の中間部材とか
らなり、頭部の端面の突部が中間部材の凹部に嵌込ま
れ、この中間部材が軸部の先端の凹部に嵌め込まれた状
態にあることを特徴とするものである。(Means for Solving the Problem) A bolt having a ceramic head of the present invention includes a ceramic head, a metal shaft portion having a screw formed thereon,
It consists of an intermediate member made of aluminum located in the middle of them, and the projection of the end face of the head is fitted in the concave portion of the intermediate member, and this intermediate member is fitted in the concave portion of the tip of the shaft portion. It is characterized by.
（実施例） 以下に本考案を図示の実施例によって更に詳細に説明す
る。(Example) Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiment.
第１図に示す第１の実施例において、（１）はセラミッ
クス製の頭部、（２）はねじが形成された金属製の軸
部、（３）はアルミニウム製の中間部材である。頭部
（１）はシリコンナイトライド、アルミナ、ジルコニア
のような強度、破壊靱性、硬度、耐摩耗性等に優れたセ
ラミックス材料からなるもので、その形状は６角形、４
角形、丸形、サラ形など任意の形状とすることができ、
またスリワリや十字穴を備えたものとすることもでき
る。軸部（２）は一般的には強度と靱性に優れたS20C等
の炭素鋼又は合金鋼が用いられ、常法に従ってねじが切
られている。In the first embodiment shown in FIG. 1, (1) is a ceramic head, (2) is a threaded metal shaft, and (3) is an aluminum intermediate member. The head (1) is made of a ceramic material having excellent strength, fracture toughness, hardness, wear resistance, etc., such as silicon nitride, alumina, and zirconia.
It can be made into any shape such as square, round, and flat,
It may also be provided with a sledge or a cross hole. The shaft portion (2) is generally made of carbon steel or alloy steel such as S20C, which is excellent in strength and toughness, and is threaded according to a conventional method.
（３）はこれらのセラミックス製の頭部（１）と金属製
の軸部（２）とを強固に接合するためのアルミニウム製
の中間部材であり、JIS A-1050に規定される純アルミニ
ウム等が用いられる。アルミニウムはセラミックスと金
属の両方に対して摩擦圧接が可能な材料であって、この
ような中間部材（３）を介在させることによってセラミ
ックス製の頭部（１）と金属製の軸部（２）とは摩擦圧
接法により強固に接合されている。接合強度は摩擦圧接
条件によっても変化するが、頭部（１）がアルミナで軸
部（２）が炭素鋼（S20C）である場合には0.5〜4.7kgf/
mm2の引張強度を示し、シリコンナイトライド製の頭部
の場合には4.2〜8.0kgf/mm2、ジルコニア製の頭部の場
合には5.9〜8.0kgf/mm2の引張強度を示す。なお中間部
材（３）の厚さは0.4〜4mm程度とすればよい。(3) is an aluminum intermediate member for firmly joining the ceramic head (1) and the metal shaft (2), such as pure aluminum specified in JIS A-1050. Is used. Aluminum is a material that can be frictionally welded to both ceramics and metal. By interposing such an intermediate member (3), a ceramic head (1) and a metal shaft (2) are provided. And are firmly joined by the friction welding method. Weld strength varies depending on friction welding conditions, but when the head (1) is alumina and the shaft (2) is carbon steel (S20C), 0.5-4.7 kgf /
The tensile strength of mm 2 is shown, and the head made of silicon nitride shows a tensile strength of 4.2 to 8.0 kgf / mm 2 , and the head made of zirconia shows a tensile strength of 5.9 to 8.0 kgf / mm 2 . The thickness of the intermediate member (3) may be 0.4 to 4 mm.
第１図に示されるように、本考案では頭部（１）の接合
部の端面に突部（４）が形成されており、凹状の中間部
材（３）の凹部にこの突部（４）が嵌込まれ、更に軸部
（２）の先端も凹状とされて中間部材（３）がその内部
に嵌まっている。本考案のボルトはこのような形状とし
たので、頭部（１）と中間部材（３）との接触面積が大
きくなり、特にボルトを回転させたときにボルト内部に
生ずる剪断力を突部（４）の外周面全体で受けることが
できるので、強度が大となる。しかも中間部材（３）の
凹部にセラミックス製の頭部（１）側の突部（４）を嵌
め込んだ形状としたので、セラミックス側には引張応力
がかかりにくい利点がある。As shown in FIG. 1, in the present invention, a protrusion (4) is formed on the end face of the joint portion of the head (1), and the protrusion (4) is formed in the recess of the concave intermediate member (3). , And the tip of the shaft portion (2) is also concave so that the intermediate member (3) is fitted therein. Since the bolt of the present invention has such a shape, the contact area between the head (1) and the intermediate member (3) increases, and in particular, when the bolt is rotated, the shearing force generated inside the bolt is applied to the protrusion ( Since it can be received by the entire outer peripheral surface of 4), the strength becomes large. In addition, since the protrusion (4) on the ceramic head (1) side is fitted in the concave portion of the intermediate member (3), there is an advantage that tensile stress is less likely to be applied to the ceramic side.
第２図は本考案の第２の実施例を示すものであり、頭部
（１）の突部（４）及び中間部材（３）がくさび形とさ
れているために、引張に対して第１の実施例よりも更に
優れた強度を示す。このようなくさび形の接合部の形状
は摩擦圧接時に中間部材（３）が軟化し流動状態となる
ことを利用して得られるものである。FIG. 2 shows a second embodiment of the present invention, in which the protrusion (4) of the head (1) and the intermediate member (3) are wedge-shaped, so The strength is further superior to that of Example 1. The wedge-shaped joint portion is obtained by utilizing the fact that the intermediate member (3) is softened to be in a fluidized state during friction welding.
（作用） このように構成された本考案のボルトは、頭部（１）が
耐摩耗性等に優れたセラミックス製のものであるから、
粉砕機のライニング材の固定用のボルトとして使用した
ような場合にも従来の金属製のボルトに比較して頭部
（１）の摩耗を大幅に減少させることができる。また本
考案のボルトは軸部（２）が金属製とされているために
従来のボルトと同様にねじ山等に欠けを生ずるおそれが
ない。更にまた本考案のボルトはアルミニウム製の中間
部材（３）を介して頭部（１）と軸部（２）とを摩擦圧
接により接合したものであるから、安価に量産すること
ができ、また接合部にある程度の熱を受けても強度が低
下するおそれもない。(Operation) Since the head portion (1) of the bolt of the present invention having such a structure is made of ceramics having excellent wear resistance,
Even when it is used as a bolt for fixing the lining material of the crusher, the wear of the head (1) can be significantly reduced as compared with the conventional metal bolt. Further, since the shaft portion (2) of the bolt of the present invention is made of metal, there is no possibility that the thread, etc. will be chipped like the conventional bolt. Furthermore, since the bolt of the present invention is one in which the head (1) and the shaft (2) are joined by friction welding through the intermediate member (3) made of aluminum, it can be mass-produced at low cost, and Even if the joint receives some heat, the strength does not decrease.
しかも頭部（１）の端面の突部（４）が中間部材（３）
の凹部に嵌込まれ、この中間部材（３）が軸部（２）の
先端の凹部に嵌め込まれた構造としたので、頭部（１）
と中間部材（３）との接触面積が大きくなり、ボルト回
転時に生ずる剪断力に対する強度が大となるうえ、セラ
ミックス側には引張応力がかかりにくい構造となってい
るため、セラミックス製の頭部（１）の破損が防止でき
る。Moreover, the projection (4) on the end face of the head (1) is formed by the intermediate member (3).
Since the intermediate member (3) is fitted in the concave portion of the shaft portion (2), the intermediate member (3) is fitted in the concave portion of the head portion (1).
And the intermediate member (3) have a large contact area, the strength against the shearing force generated when the bolt is rotated is large, and the ceramic side has a structure in which tensile stress is less likely to be applied. The damage of 1) can be prevented.
（考案の効果） 本考案は以上の説明から明らかなように、頭部が摩耗し
にくく、ねじ山が欠けるおそれもなく、しかも安価に製
造することができ、強度に優れたもるものであるから、
従来のボルトに比較して多くの利点を有するものであ
る。よって本考案は従来の問題点を一掃したセラミック
ス製の頭部を持つボルトとして、その実用的価値は極め
て大きいものである。(Effect of the Invention) As is apparent from the above description, the present invention is one that is hard to wear on the head, does not have a risk of lacking a screw thread, can be manufactured at low cost, and has excellent strength. From
It has many advantages over conventional bolts. Therefore, the present invention is extremely useful in practical use as a bolt having a ceramic head that eliminates the conventional problems.
第１図は本考案の第１の実施例を示す一部切欠正面図、
第２図は第２の実施例を示す一部切欠正面図である。 （１）：セラミックス製の頭部、（２）：金属製の軸
部、（３）：アルミニウム製の中間部材、（４）：頭部
の端面の突部FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention,
FIG. 2 is a partially cutaway front view showing the second embodiment. (1): Ceramic head, (2): Metal shaft, (3): Aluminum intermediate member, (4): Head end projection
───────────────────────────────────────────────────── フロントページの続き 審査官 石川 昇治 (56)参考文献 特開 昭61−279377（ＪＰ，Ａ) 実公 昭45−21940（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── --Continued from the front page Examiner Shoji Ishikawa (56) References JP-A-61-279377 (JP, A) Jitsuko Shou-21-21940 (JP, Y1)
Claims (1)
成された金属製の軸部（２）と、それらの中間に位置す
るアルミニウム製の中間部材（３）とからなり、頭部
（１）の端面の突部（４）が中間部材（３）の凹部に嵌
込まれ、この中間部材（３）が軸部（２）の先端の凹部
に嵌め込まれた状態にあることを特徴とするセラミック
ス製の頭部を持つボルト。1. A head comprising a ceramic head (1), a threaded metal shaft (2), and an aluminum intermediate member (3) located in between. The protrusion (4) of the end face of (1) is fitted in the recess of the intermediate member (3), and the intermediate member (3) is fitted in the recess of the tip of the shaft (2). A bolt with a ceramic head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125318U JPH0640974Y2 (en) | 1988-09-26 | 1988-09-26 | Bolt with ceramic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988125318U JPH0640974Y2 (en) | 1988-09-26 | 1988-09-26 | Bolt with ceramic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0246110U JPH0246110U (en) | 1990-03-29 |
| JPH0640974Y2 true JPH0640974Y2 (en) | 1994-10-26 |
Family
ID=31375820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988125318U Expired - Lifetime JPH0640974Y2 (en) | 1988-09-26 | 1988-09-26 | Bolt with ceramic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640974Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013057803A1 (en) * | 2011-10-19 | 2013-04-25 | Oya Nagato | Radiation and ion detection device equipped with correction device and analysis display device and analysis display method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4521940Y1 (en) * | 1965-08-09 | 1970-09-01 | ||
| JPS61279377A (en) * | 1985-06-04 | 1986-12-10 | Kubota Ltd | How to join ceramic parts and metal parts |
-
1988
- 1988-09-26 JP JP1988125318U patent/JPH0640974Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013057803A1 (en) * | 2011-10-19 | 2013-04-25 | Oya Nagato | Radiation and ion detection device equipped with correction device and analysis display device and analysis display method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0246110U (en) | 1990-03-29 |
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