JPH0947879A - Cladding by welding method for sliding face of guide structure in machine tool and guide structure - Google Patents
Cladding by welding method for sliding face of guide structure in machine tool and guide structureInfo
- Publication number
- JPH0947879A JPH0947879A JP7222615A JP22261595A JPH0947879A JP H0947879 A JPH0947879 A JP H0947879A JP 7222615 A JP7222615 A JP 7222615A JP 22261595 A JP22261595 A JP 22261595A JP H0947879 A JPH0947879 A JP H0947879A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- guide structure
- alloy powder
- copper alloy
- machine tool
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
- F16C2223/46—Coating surfaces by welding, e.g. by using a laser to build a layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
- F16C2223/80—Coating surfaces by powder coating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Sliding-Contact Bearings (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、工作機械の主軸や
テーブルなどの案内部の案内滑り面をプラズマ・トラン
スファード・アーク溶接により肉盛り加工してなる工作
機械における案内構造の滑り面肉盛溶接方法および案内
構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding surface overlay of a guide structure in a machine tool in which a guide sliding surface of a guide portion such as a spindle of a machine tool or a table is overlay-processed by plasma transfer arc welding. A welding method and a guide structure.
【０００２】[0002]
【従来の技術】工作機械では、滑り運動をするテーブル
や主軸の荷重を支持するとともに、相対運動の方向に対
して生じる摩擦抵抗をできるだけ少なくして案内するた
めに、静圧型の軸受や、動圧型の軸受が設けられてい
る。ことに、高い精度の要求される精密加工用工作機械
では、運動精度の点で優れた特性を発揮する静圧型軸受
が多用されている。2. Description of the Related Art In machine tools, in order to support the load of a sliding table and a spindle, and guide with a minimum frictional resistance in the direction of relative movement, a static pressure type bearing or a dynamic bearing is used. A pressure type bearing is provided. Particularly, in machine tools for precision machining that require high accuracy, static pressure type bearings that exhibit excellent characteristics in terms of motion accuracy are often used.
【０００３】図５は、従来の静圧軸受パッドを示す。こ
れは、工作機械において、テーブルなどの直線摺動運動
を案内する直線案内として用いられる静圧軸受である。
案内面にはリセス２が形成されており、このリセス２に
は、絞り３を介して潤滑油が供給される。移動体４は、
リセス２の周囲と移動体４との間の軸受隙間にある潤滑
油膜の静的圧力によって支持されるようになっている。FIG. 5 shows a conventional hydrostatic bearing pad. This is a hydrostatic bearing used as a linear guide for guiding a linear sliding motion of a table or the like in a machine tool.
A recess 2 is formed on the guide surface, and the lubricating oil is supplied to the recess 2 via the throttle 3. The mobile unit 4
The bearing is supported by the static pressure of the lubricating oil film in the bearing gap between the periphery of the recess 2 and the moving body 4.
【０００４】通常、この種の静圧軸受の設計では、剛性
を重視するか、滑り特性を重視するかによって、案内面
の材料の選定が異なってくる。剛性に重点を置いた場
合、鉄系材料を選ぶことが多く、滑り特性に重点を置く
と銅系材料が選ばれる。一般には、銅系単一材料の軸受
材料の場合、母材の剛性が低下する場合が多く、しかも
歪み量が鉄系材料に較べて二倍にもなることが問題とな
るので、滑り面としては銅合金の板材を加工したものを
用い、この板材を鉄系材料の母材に張り付ける方式が採
用されている。Usually, in the design of this type of hydrostatic bearing, the selection of the material of the guide surface differs depending on whether importance is attached to rigidity or slip characteristics. When focusing on rigidity, iron-based materials are often selected, and when focusing on slip characteristics, copper-based materials are selected. Generally, in the case of a bearing material made of a copper-based single material, the rigidity of the base material often decreases, and the problem is that the amount of strain is double that of iron-based materials. Is a processed material of a copper alloy plate, and a method of sticking this plate material to a base material of an iron-based material is adopted.
【０００５】また、軸受材料の欠点を補うため、母材の
表面を肉盛加工することによって、案内面を形成するこ
とも行なわれている。従来、この種の肉盛加工には、Ｔ
ＩＧ溶接、ＭＩＧ溶接が応用されている。Further, in order to make up for the defects of the bearing material, the guide surface is also formed by overlaying the surface of the base material. Conventionally, T
IG welding and MIG welding are applied.
【０００６】一方、動圧型の軸受では、面接触による案
内面方式が、従来から最も秀でた滑り面とされる。しか
し、性能および価格の面からより安価なターカイト滑り
案内面を採用するのが一般的である。On the other hand, in the dynamic pressure type bearing, the guide surface system by surface contact is the most excellent sliding surface in the past. However, in terms of performance and price, it is common to use a cheaper turkite sliding guide surface.
【０００７】ところで、最近では、プラズマ・トランス
ファード・アーク溶接が肉盛加工に応用されている。こ
のプラズマ・トランスファード・アーク溶接は、被加工
物（母材）と、タングステン電極との間に発生させたプ
ラズマアーク中に、合金粉末を投入して溶融し、被加工
物表面に溶着させる溶接技術であり、耐摩耗性が特に要
求される部品の表面処理肉盛加工などに応用されてい
る。その従来技術として、例えば、特開昭５５−５１２
６号公報に記載されている発明を挙げることができる。By the way, recently, plasma transfer arc welding has been applied to overlay processing. This plasma transferred arc welding is a welding process in which alloy powder is put into a plasma arc generated between a work piece (base material) and a tungsten electrode, which is then melted and welded to the work piece surface. It is a technology and has been applied to surface treatment and overlay processing of parts where wear resistance is particularly required. As the prior art, for example, Japanese Patent Laid-Open No. S55-512
The invention described in Japanese Patent No. 6 can be mentioned.
【０００８】これによれば、不活性ガスでシールドされ
た鉄鋼母材と非消耗性電極の間に発生したアーク中に、
合金鋼粉末混合物を供給して鉄鋼母材表面に肉盛するこ
とにより、被溶接母材を大きく溶かすことなく、極めて
高い硬さで溶接割れの発生しない表面硬化肉盛層を加工
できるとされている。According to this, in the arc generated between the steel base material shielded by the inert gas and the non-consumable electrode,
By supplying the alloy steel powder mixture and overlaying it on the surface of the steel base material, it is said that it is possible to process a surface-hardened overlay layer with extremely high hardness without causing welding cracks without significantly melting the base material to be welded. There is.
【０００９】[0009]
【発明が解決しようとする課題】静圧軸受において、前
記した銅系材料の板材を張り付ける方式の場合、その板
材の材料は、一般鋼材よりもはるかに高価な材料であ
る。そのうえ、銅系材料の板材は、滑り面として必要と
される機能からすれば、数ｍｍでよいものを数十ｍｍも
の寸法の部材を使って加工しなければならないのがほと
んどであり、高価なものとなっている。しかも、張り付
け方式の静圧軸受の場合、軸受構造のコンパクト設計が
できず剛性が上がらないため、高精度化を妨げる要因と
なっている。In the hydrostatic bearing, in the case of the method of sticking the plate material of the copper-based material as described above, the material of the plate material is much more expensive than general steel material. Moreover, in terms of the function required as a sliding surface, a copper-based material plate must be processed using a member with a size of several tens of millimeters, which is expensive, because it is required to be several millimeters. It has become a thing. In addition, in the case of the hydrostatic bearing of the pasting type, the compact design of the bearing structure cannot be performed and the rigidity cannot be increased, which is a factor that hinders high precision.
【００１０】他方、図６に示すように、ＴＩＧ溶接、Ｍ
ＩＧ溶接による肉盛加工で母材５へ肉盛り６をして案内
滑り面を形成する場合、肉盛材料の母材からの溶け込み
７が、約３０％程度あり、それが滑り面の表面に析出し
てきて、かじりの原因となるという最大の欠点がある。
また、肉盛り６と母材５とを溶接境界で強固に溶着させ
るのが、ピンホール８や不純物の存在によって困難であ
った。On the other hand, as shown in FIG. 6, TIG welding, M
When the guide slide surface is formed by overlaying the base material 5 by the overlay processing by IG welding, there is about 30% of the melt-in 7 of the overlay material from the base material, which is on the surface of the slide surface. It has the greatest drawback that it begins to precipitate and causes galling.
Further, it was difficult to firmly weld the buildup 6 and the base material 5 at the weld boundary due to the presence of the pinholes 8 and impurities.
【００１１】工作機械用の静圧軸受に必要とされる性能
の一つとして発熱の少ないことを挙げることができる。
この点、銅系材料からなる板材を張り付けた方式の静圧
軸受では、滑り速度で静圧油が剪断されたときに発生す
る熱を機械本体側に伝達しやすく、また、板材と機械本
体との間の線熱膨張係数の差が熱変位の大きな原因とな
っている。この熱変位があると、静圧隙間の変形を助長
し、油量の不足などの問題が生じる上に、熱による油の
劣化や、経年変化が生じる。さらには、熱変位を考慮し
た板材の加工は、従来、経験に頼る部分が多く、また、
板材の張り付け面には、エポキシ樹脂を接着材にして張
り合わせたり、Ｏリング溝を加工したりと、多くの組立
工数を必要としている。One of the performances required for a static pressure bearing for machine tools is that it generates less heat.
In this respect, the static pressure bearing of the method in which the plate material made of the copper-based material is attached makes it easy to transfer the heat generated when the static pressure oil is sheared at the sliding speed to the machine body side, and The difference in the coefficient of linear thermal expansion between the two is a major cause of thermal displacement. This thermal displacement promotes deformation of the static pressure gap, which causes problems such as insufficient oil quantity, and also causes deterioration of oil due to heat and secular change. Furthermore, in the processing of plate materials that take thermal displacement into consideration, conventionally, there are many parts that rely on experience,
On the pasting surface of the plate material, a large number of assembling steps are required, such as using an epoxy resin as an adhesive material for pasting, or processing an O-ring groove.
【００１２】他方、動圧軸受では、その案内方式にター
カイト滑り案内面を採用した場合に、高剛性を得る点に
おいて問題がある。また、面接触案内面方式の動圧軸受
では、優れた滑り面を得られる反面、加工や接着の難度
から高価なものとなる問題があった。On the other hand, the dynamic pressure bearing has a problem in that high rigidity is obtained when a turkey slide guide surface is adopted as the guide system. Further, the surface-contact guide surface type dynamic pressure bearing has a problem that although it is possible to obtain an excellent sliding surface, it is expensive due to the difficulty of processing and bonding.
【００１３】そこで、本発明の目的は、前記従来技術の
有する問題点を解消し、従来の板材張り付け方式や溶接
肉盛加工によるものに較べて強度的にも、また、滑り特
性においても優れた静圧滑り面を有する工作機械の案内
構造を提供することにある。Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to have excellent strength and slip characteristics as compared with the conventional method of sticking a plate material or welding overlay processing. It is to provide a guide structure for a machine tool having a static pressure sliding surface.
【００１４】また、本発明の他の目的は、精密加工用の
工作機械の動圧滑り面として優れた性能を発揮するよう
にした工作機械の案内構造を提供することにある。Another object of the present invention is to provide a machine tool guide structure which exhibits excellent performance as a dynamic pressure sliding surface of a machine tool for precision machining.
【００１５】さらに、本発明の他の目的は、形状の制約
なく肉盛加工により、母材の溶け込みの少ない良好な滑
り面を形成でき、しかも、自動化に適し、コスト削減に
資する滑り面の肉盛加工方法を提供することにある。Further, another object of the present invention is to form a good sliding surface with less penetration of the base material by overlay processing without restriction of the shape, and moreover, it is suitable for automation and contributes to cost reduction. It is to provide a processing method.
【００１６】[0016]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明は、不活性ガスにシールドされたプラズマ
アーク中に銅を主体とする組成成分の銅合金粉末を送給
しながら軸受本体の鉄系材料からなる母材表面にプラズ
マ・トランスファード・アーク溶接を施すことによって
軸受要素の滑り面材料を肉盛加工することを特徴とする
ものである。In order to achieve the above-mentioned object, the present invention provides a bearing while feeding a copper alloy powder having a composition component mainly composed of copper into a plasma arc shielded by an inert gas. It is characterized in that the sliding surface material of the bearing element is built up by performing plasma transfer arc welding on the surface of the base material made of iron-based material of the main body.
【００１７】また、本発明は、相対滑り運動をする移動
体に運動方向への案内を与える工作機械の案内構造にお
いて、不活性ガスにシールドされたプラズマアーク中に
銅を主体とする組成成分の銅合金粉末を送給しながら軸
受本体の鉄系材料からなる母材表面にプラズマ・トラン
スファード・アーク溶接をすることによって肉盛加工し
た滑り面を有する静圧軸受要素を具備することを特徴と
する。Further, according to the present invention, in a guide structure of a machine tool for providing a moving body which makes a relative sliding motion in a moving direction, a composition component mainly composed of copper is contained in a plasma arc shielded by an inert gas. The present invention is characterized by comprising a hydrostatic bearing element having a sliding surface that is overlay-processed by performing plasma transfer arc welding on a surface of a base material made of an iron-based material of a bearing body while feeding a copper alloy powder. To do.
【００１８】さらに、本発明は、相対滑り運動をする移
動体に運動方向への案内を与える工作機械の案内構造に
おいて、不活性ガスにシールドされたプラズマアーク中
に銅を主体とする組成成分の銅合金粉末を送給しながら
軸受本体の鉄系材料からなる母材表面にプラズマ・トラ
ンスファード・アーク溶接をすることによって肉盛加工
した滑り面を有する動圧軸受要素を具備することを特徴
とする。Further, according to the present invention, in a guide structure of a machine tool for giving a guide in a moving direction to a moving body which makes a relative sliding motion, a composition component mainly composed of copper is contained in a plasma arc shielded by an inert gas. The present invention is characterized by comprising a hydrodynamic bearing element having a sliding surface that is overlay-processed by performing plasma transfer arc welding on the surface of a base material made of an iron-based material of the bearing body while feeding the copper alloy powder. To do.
【００１９】[0019]
【発明の実施の形態】以下、本発明の一実施形態につい
て添付の図面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.
【００２０】図１は、プラズマ・トランスファード・ア
ーク溶接による肉盛り加工を表わした図であり、銅合金
粉末１０をプラズマアーク１１に送給しながら、母材１
２の表面を肉盛する。図中、１３は、タングステン電
極、１４は直流アーク溶接電源で、母材１２が陽極、タ
ングステン電極１３が陰極となるように接続される。１
５は、シールドガスノズルで、不活性ガスとしてアルゴ
ンガスがプラズマアークを覆うように噴出される。タン
グステン電極１３を収容する内筒１７と、外筒１８との
間が銅合金粉末１０の供給通路となっている。従って、
母材１２と、タングステン電極１３の間にプラズマアー
ク１１を発生させて、銅粉末合金１０を供給すると、銅
粉末合金１０は、アーク中で溶けて母材１２の表面に肉
盛される。FIG. 1 is a diagram showing a build-up process by plasma transfer arc welding, in which a base material 1 is fed while a copper alloy powder 10 is fed to a plasma arc 11.
2. Build up the surface of 2. In the figure, 13 is a tungsten electrode, 14 is a DC arc welding power source, and is connected so that the base material 12 serves as an anode and the tungsten electrode 13 serves as a cathode. 1
Reference numeral 5 denotes a shield gas nozzle, and an argon gas as an inert gas is jetted so as to cover the plasma arc. A supply passage for the copper alloy powder 10 is provided between the inner cylinder 17 that houses the tungsten electrode 13 and the outer cylinder 18. Therefore,
When the plasma arc 11 is generated between the base material 12 and the tungsten electrode 13 and the copper powder alloy 10 is supplied, the copper powder alloy 10 is melted in the arc and built up on the surface of the base material 12.
【００２１】図２は、静圧軸受のパッド材料をプラズマ
・トランスファード・アーク溶接により肉盛加工して形
成した実施形態である。なお、母材の鋼材には、ＪＩＳ
Ｇ ３１０１ ＳＳ４００を使い、銅粉末合金には、
銅を主体とする表１に示す粒径６０〜２００メッシュの
銅合金粉末を使用した。FIG. 2 shows an embodiment in which the pad material of the hydrostatic bearing is built up by plasma transfer arc welding. The base steel material is JIS
Using G 3101 SS400, copper powder alloy,
A copper alloy powder containing copper as a main component and having a particle size of 60 to 200 mesh shown in Table 1 was used.
【００２２】[0022]
【表１】 プラズマ・トランスファード・アーク溶接による場合、
ランド部２０のみを肉盛し、これによって結果的に中央
にリセス部２１を形成できるので、従来の板材張り付け
方式に較べて、最小限の滑り面の肉盛に必要な材料で済
み、材料の節約になる。[Table 1] When using plasma transfer arc welding,
Since only the land portion 20 is built up, and as a result, the recess portion 21 can be formed in the center, the material required for the build up of the minimum sliding surface is sufficient as compared with the conventional plate material attachment method. Saves money.
【００２３】また、プラズマ・トランスファード・アー
ク溶接による肉盛りの場合、強度の得られる鋼材と、滑
り面特性の良好な銅合金というように自由度を高く組み
合わせることが可能となり、二種類の材料の特性をとも
に活用して良好な静圧滑り面を得ることができる。Further, in the case of overlaying by plasma transfer arc welding, it is possible to combine a steel material having high strength and a copper alloy having good sliding surface characteristics with a high degree of freedom, and two types of materials can be combined. It is possible to obtain a good static pressure sliding surface by utilizing the characteristics of both.
【００２４】ここで、図７は、静圧軸受のパッド材料に
おける溶接境界の金属組織を２００倍の倍率で写した顕
微鏡写真である。このうち、図７（ａ）は、本発明を実
施した静圧軸受パッド材料で、図７（ｂ）はこれと対比
するため、従来のＭＩＧ溶接により肉盛したものの溶接
境界を示す。この写真を対比すれば、明らかなように、
本発明によれば、母材の溶け込みが従来のＭＩＧ溶接、
ＴＩＧ溶接により肉盛したものと較べて少なく、さら
に、溶接境界でのピンホール、不純物の介在が少なく、
緻密な面で強固に溶着するため、生成した肉盛りの剥離
する問題を解消できることがわかった。Here, FIG. 7 is a photomicrograph of the metal structure of the weld boundary in the pad material of the hydrostatic bearing at a magnification of 200 times. Of these, FIG. 7 (a) shows a hydrostatic bearing pad material of the present invention, and FIG. 7 (b) shows a welding boundary of the material that is built up by conventional MIG welding for comparison with this. If you compare this photo, as you can see,
According to the present invention, the penetration of the base material is the conventional MIG welding,
Compared to the one that is built up by TIG welding, there are less pinholes and inclusions of impurities at the weld boundary,
It was found that the problem of peeling of the generated build-up can be solved because the welding is performed firmly on the dense surface.
【００２５】しかも、薄く肉盛るのが容易なため、従来
の張り付け方式に較べて、静圧軸受の構造のコンパクト
化とともに、高精度化、高減衰性につなげることができ
る。In addition, since it is easy to build up thinly, the structure of the hydrostatic bearing can be made compact, and the precision and the damping can be improved as compared with the conventional pasting method.
【００２６】次に、図３は、フライス軸２２の内部に中
ぐり軸を移動可能に設ける中ぐり盤において、中ぐり軸
を案内する動圧滑り面２３をプラズマ・トランスファー
ド・アーク溶接により形成した実施形態である。Next, referring to FIG. 3, in a boring machine in which a boring shaft is movably provided inside a milling shaft 22, a dynamic pressure sliding surface 23 for guiding the boring shaft is formed by plasma transfer arc welding. It is an embodiment.
【００２７】この場合、プラズマ・トランスファード・
アーク溶接によれば、溶接トーチ２４をフライス軸２２
の軸孔に水平に挿入して肉盛り加工を行なえ、長手方向
の制約を受けずに自由度の高い肉盛り加工を施すことが
できる。また、プラズマ・トランスファード・アーク溶
接では、動圧滑り面２３を面接触面として安価に加工で
きる。In this case, plasma transferred
According to arc welding, the welding torch 24 is attached to the milling shaft 22.
It is possible to carry out the overlaying by inserting it horizontally into the shaft hole, and to perform the overlaying with a high degree of freedom without being restricted by the longitudinal direction. Further, in plasma transfer arc welding, the dynamic pressure sliding surface 23 can be processed at low cost as a surface contact surface.
【００２８】以上、本発明について、実施形態を挙げて
説明したが、本発明は、種々の工作機械の静圧滑り面
や、動圧滑り面を有する案内機構に適用することができ
る。例えば、図４に示すように、研削盤の砥石軸２５の
静圧滑り面２６に適用しても同じように効果的である。Although the present invention has been described above with reference to the embodiments, the present invention can be applied to static pressure sliding surfaces of various machine tools and guide mechanisms having dynamic pressure sliding surfaces. For example, as shown in FIG. 4, it is similarly effective when applied to the static pressure sliding surface 26 of the grindstone shaft 25 of the grinder.
【００２９】[0029]
【発明の効果】以上の説明から明らかなように、請求項
１に記載した発明によれば、プラズマ・トランスファー
ド・アーク溶接により、剥離の問題のないように緻密な
母材に対して溶接境界がしっかりと強固に溶着のないよ
うに緻密な母材に対して溶接境界がしっかりと強固に溶
着し、滑り面にピンホール、不純物のなくない剛性の高
い滑り面を形成できる。また、肉盛りを薄くし、必要最
小限の材料を直接母材に肉盛りできるので、材料の無駄
無く、しかも、加工上の制約が少なく、自由度の大きな
溶接が可能であるため、自動化による省力化に適し、工
作機械の滑り面材料の加工コストの低減化に資する。As is apparent from the above description, according to the invention described in claim 1, the plasma transfer arc welding allows the welding boundary to be formed on the dense base metal without causing the problem of separation. The weld boundary is firmly and firmly welded to the dense base metal so that there is no strong and firm welding, and pinholes on the sliding surface and a highly rigid sliding surface without impurities can be formed. In addition, since the thickness of the buildup can be reduced and the minimum required material can be built up directly on the base metal, there is no waste of material, there are few restrictions on processing, and welding with a large degree of freedom is possible. It is suitable for labor saving and contributes to the reduction of the processing cost of the sliding surface material of machine tools.
【００３０】また、請求項２に記載した発明によれば、
肉盛の方式がプラズマ・トランスファード・アークであ
り、低温溶接のため母材への溶け込みのない良好な滑り
面を有し、しかも、鋼材の母材に肉盛されてできた滑り
面は、銅合金の特徴を活かすことができ、強度を増強で
きる一方で、歪みを少なくすることができる。According to the second aspect of the present invention,
The overlay method is plasma transfer arc, and it has a good sliding surface that does not melt into the base metal due to low temperature welding, and the sliding surface formed by overlaying the steel base material is While the characteristics of the copper alloy can be utilized and the strength can be enhanced, the strain can be reduced.
【００３１】さらに、請求項３に記載した発明によれ
ば、動圧滑り面を安価に構成できる面接触案内面とな
り、動剛性の向上を図ることが可能となる。Further, according to the invention described in claim 3, the dynamic pressure sliding surface becomes a surface contact guide surface which can be constructed at a low cost, and the dynamic rigidity can be improved.
【図１】本発明の一実施形態による滑り面肉盛り溶接方
法の説明図。FIG. 1 is an explanatory view of a sliding surface build-up welding method according to an embodiment of the present invention.
【図２】本発明を静圧軸受パッドに適用した実施形態の
説明図。FIG. 2 is an explanatory diagram of an embodiment in which the present invention is applied to a hydrostatic bearing pad.
【図３】本発明をフライス軸の動圧滑り面に適用した実
施形態の説明図。FIG. 3 is an explanatory view of an embodiment in which the present invention is applied to a dynamic pressure sliding surface of a milling shaft.
【図４】本発明を適用できる砥石軸の説明図。FIG. 4 is an explanatory view of a grindstone shaft to which the present invention can be applied.
【図５】従来の静圧軸受パッドの構成説明図。FIG. 5 is a structural explanatory view of a conventional hydrostatic bearing pad.
【図６】従来の母材に肉盛り溶接した滑り面での母材の
溶け込みを示す説明図。FIG. 6 is an explanatory view showing penetration of a base material on a sliding surface which is welded by overlay welding to a conventional base material.
【図７】静圧軸受パッドの溶接境界を示す金属組織の顕
微鏡写真で、図７（ａ）は、本発明を実施した静圧軸受
パッド、図７（ｂ）は、ＭＩＧ溶接により肉盛り従来例
を示す。FIG. 7 is a micrograph of a metallographic structure showing a weld boundary of a hydrostatic bearing pad, FIG. 7 (a) is a hydrostatic bearing pad according to the present invention, and FIG. 7 (b) is a padding conventional by MIG welding. Here is an example:
１０ 銅合金粉末 １１ プラズマアーク １２ 母材 １３ タングステン電極 １６ アルゴンガス ２０ ランド部 ２１ リセス部 ２２ フライス軸 ２３ 動圧滑り面 ２４ 溶接トーチ ２５ 砥石軸 10 Copper alloy powder 11 Plasma arc 12 Base metal 13 Tungsten electrode 16 Argon gas 20 Land part 21 Recess part 22 Milling shaft 23 Dynamic pressure sliding surface 24 Welding torch 25 Grindstone shaft
Claims (3)
ク中に銅を主体とする組成成分の銅合金粉末を送給しな
がら軸受本体の鉄系材料からなる母材表面にプラズマ・
トランスファード・アーク溶接を施すことによって軸受
要素の滑り面材料を肉盛加工することを特徴とする工作
機械における案内構造の滑り面肉盛溶接方法。1. A plasma arc is formed on the surface of a base material made of an iron-based material of a bearing main body while feeding a copper alloy powder having a composition component mainly composed of copper into a plasma arc shielded by an inert gas.
A sliding surface overlay welding method for a guide structure in a machine tool, characterized in that the sliding surface material of a bearing element is overlay-processed by performing transfer arc welding.
案内を与える工作機械の案内構造において、 不活性ガスにシールドされたプラズマアーク中に銅を主
体とする組成成分の銅合金粉末を送給しながら軸受本体
の鉄系材料からなる母材表面にプラズマ・トランスファ
ード・アーク溶接をすることによって肉盛加工した滑り
面を有する静圧軸受要素を具備することを特徴とする工
作機械における案内構造。2. In a guide structure of a machine tool for providing a moving body that performs relative sliding motion in a moving direction, a copper alloy powder containing copper as a main constituent in a plasma arc shielded by an inert gas. In a machine tool characterized by comprising a hydrostatic bearing element having a sliding surface that is overlay-processed by plasma transfer arc welding on the surface of a base material made of iron-based material of the bearing body while feeding Guide structure.
案内を与える工作機械の案内構造において、 不活性ガスにシールドされたプラズマアーク中に銅を主
体とする組成成分の銅合金粉末を送給しながら軸受本体
の鉄系材料からなる母材表面にプラズマ・トランスファ
ード・アーク溶接をすることによって肉盛加工した滑り
面を有する動圧軸受要素を具備することを特徴とする工
作機械における案内構造。3. A guide structure of a machine tool for guiding a moving body which makes a relative sliding motion in a moving direction, wherein a copper alloy powder containing copper as a main component is contained in a plasma arc shielded by an inert gas. In a machine tool characterized by comprising a dynamic pressure bearing element having a sliding surface that is overlay-processed by plasma transfer arc welding on a surface of a base material made of an iron-based material of a bearing body while feeding Guide structure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7222615A JPH0947879A (en) | 1995-08-08 | 1995-08-08 | Cladding by welding method for sliding face of guide structure in machine tool and guide structure |
| KR1019960032840A KR970009960A (en) | 1995-08-08 | 1996-08-07 | Sliding surface welding method and guide structure of guide structure in machine tool |
| CN96111812A CN1147437A (en) | 1995-08-08 | 1996-08-08 | Method and apparatus for cladding slide way of machine tool by welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7222615A JPH0947879A (en) | 1995-08-08 | 1995-08-08 | Cladding by welding method for sliding face of guide structure in machine tool and guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0947879A true JPH0947879A (en) | 1997-02-18 |
Family
ID=16785239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7222615A Pending JPH0947879A (en) | 1995-08-08 | 1995-08-08 | Cladding by welding method for sliding face of guide structure in machine tool and guide structure |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0947879A (en) |
| KR (1) | KR970009960A (en) |
| CN (1) | CN1147437A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012209A (en) * | 2021-11-30 | 2022-02-08 | 中国铁建重工集团股份有限公司 | Surfacing method for main frame of driving and anchoring all-in-one machine |
| US20230228255A1 (en) * | 2018-03-23 | 2023-07-20 | Miba Gleitlager Austria Gmbh | Wind turbine gearbox and method for producing a wind turbine gearbox |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570915B (en) * | 2018-11-05 | 2021-01-12 | 中国原子能科学研究院 | Machining device for large hydrostatic bearing and bearing machining method using machining device |
| CN110332260B (en) * | 2019-08-12 | 2021-09-24 | 湖北康晨安宝矿业设备有限责任公司 | Front axle traveling and parking integrated brake |
-
1995
- 1995-08-08 JP JP7222615A patent/JPH0947879A/en active Pending
-
1996
- 1996-08-07 KR KR1019960032840A patent/KR970009960A/en not_active Application Discontinuation
- 1996-08-08 CN CN96111812A patent/CN1147437A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230228255A1 (en) * | 2018-03-23 | 2023-07-20 | Miba Gleitlager Austria Gmbh | Wind turbine gearbox and method for producing a wind turbine gearbox |
| CN114012209A (en) * | 2021-11-30 | 2022-02-08 | 中国铁建重工集团股份有限公司 | Surfacing method for main frame of driving and anchoring all-in-one machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970009960A (en) | 1997-03-27 |
| CN1147437A (en) | 1997-04-16 |
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