JP4228078B2 - Sliding guide and machine tool equipped with the sliding guide - Google Patents
Sliding guide and machine tool equipped with the sliding guide Download PDFInfo
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- JP4228078B2 JP4228078B2 JP2004120793A JP2004120793A JP4228078B2 JP 4228078 B2 JP4228078 B2 JP 4228078B2 JP 2004120793 A JP2004120793 A JP 2004120793A JP 2004120793 A JP2004120793 A JP 2004120793A JP 4228078 B2 JP4228078 B2 JP 4228078B2
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- 230000003746 surface roughness Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 239000010687 lubricating oil Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 description 17
- 238000002474 experimental method Methods 0.000 description 11
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Bearings For Parts Moving Linearly (AREA)
Description
本発明は、工作機械、特にそのすべり案内に関し、位置決め精度の向上を図るものである。 The present invention relates to a machine tool, in particular, its sliding guide, and aims to improve positioning accuracy.
工作機械に用いられているすべり案内は、高剛性で減衰特性に優れ、重切削に好適で安価という利点をもっている。反面、摺動抵抗に速度依存性があるという欠点を持つため、スティックスリップやロストモーションの発生により位置決め誤差を生じやすい。 A slide guide used in a machine tool has advantages of high rigidity, excellent damping characteristics, suitable for heavy cutting, and inexpensive. On the other hand, since the sliding resistance has a speed dependency, positioning errors are likely to occur due to the occurrence of stick-slip and lost motion.
従来のすべり案内は、基台本体表面と基台本体上を移動する移動体との間に、一般的に潤滑油を供給している。この場合、基台表面は表面粗さが最大高さ１〜２μｍ程度であり、潤滑油の４０℃における動粘度は６８ｍｍ2／ｓ程度であり、潤滑油の保持のため、即
ち油だまりをつくるため、移動体の基台との接触表面にキサゲ加工を施すのが一般的であった。（例えば、非特許文献参照）。
従来のすべり案内は、一般的に上述のとおり、キサゲ加工により潤滑油を保持しようとするものであるが、低速度領域における動摩擦係数が高いゆえ、位置決め精度が低いという欠点がある。さらに、詳しく述べれば、すべり速度に対する動摩擦係数の特性は、図１のようになり、低速度域では動摩擦係数が高く、速度の増加に伴い動摩擦係数が減少する負の勾配のため、スティックスリップを起こす結果、位置決め精度が悪いという欠点がある。 Conventional sliding guides are generally intended to retain lubricating oil by scraping as described above, but have a drawback that positioning accuracy is low because of a high dynamic friction coefficient in a low speed region. More specifically, the characteristics of the dynamic friction coefficient with respect to the sliding speed are as shown in FIG. As a result, the positioning accuracy is poor.
本発明は、すべり速度が小さいときにも、即ち低速度域でも動摩擦係数の増加を招くことの無いようなすべり案内及び同案内を備えた工作機械を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding guide and a machine tool provided with the sliding guide that do not cause an increase in the coefficient of dynamic friction even when the sliding speed is low, that is, in a low speed range.
本発明は、表面粗さが最大高さ０．１μｍ以下である鋼よりなる基台と、上記基台上をすべり移動する表面粗さが最大高さ０．１μｍ以下である鋼よりなる移動体とよりなり、上記基台と上記移動体との間に４０℃における動粘度８５〜１７０ｍｍ2／ｓの潤滑油を介在させたことを特徴とするすべり案内を提供する。その特徴は、基台及び移動体の表面粗さを最大高さ０．１μｍ以下にすること、つまり従来の基台、移動体よりも鏡面化することと、基台と移動体との間に介在させる潤滑油の４０℃における動粘度を８５〜１７０ｍｍ2／ｓと、従来の潤滑油よりも高粘度にすることである。このような構成にすることにより、従来のキサゲ加工をすることなく、かつ低速度域での動摩擦係数の低減を図ることができる。尚、上記４０℃における動粘度が８５ｍｍ2／ｓより小であると油膜切れを起こすことになり、又１７０ｍｍ2／ｓより大であると粘性によって油を引きずるため抵抗が大きくなり、いずれの場合も好ましくない。 The present invention relates to a base made of steel having a maximum surface roughness of 0.1 μm or less and a moving body made of steel having a surface roughness that slides on the base and having a maximum height of 0.1 μm or less. The sliding guide is characterized in that a lubricating oil having a kinematic viscosity of 85 to 170 mm 2 / s at 40 ° C. is interposed between the base and the moving body. The feature is that the surface roughness of the base and the moving body is set to a maximum height of 0.1 μm or less, that is, the mirror is made more specular than the conventional base and the moving body, and between the base and the moving body. The kinematic viscosity at 40 ° C. of the interposed lubricating oil is 85 to 170 mm 2 / s, which is higher than that of the conventional lubricating oil. By adopting such a configuration, it is possible to reduce the dynamic friction coefficient in a low speed region without performing conventional scraping. If the kinematic viscosity at 40 ° C. is less than 85 mm 2 / s, the oil film will break, and if it is greater than 170 mm 2 / s, the oil will be dragged by the viscosity, increasing the resistance. Is also not preferred.
本発明は、高剛性のすべり案内の欠点の一つである低速度域での動摩擦係数の増加を抑えることができ、そのことによりすべり案内の位置決め精度の向上が図れる。本発明は又、すべり案内の特徴である耐びびり性（剛性と減衰能の積）が高く、加工時のびびりの発生を抑制することができるので、高精度の位置決めが実現することにより重切削対応型の工作機械を提供し得た。又、本発明は、例えば送り速度を従来の１．５倍に、切り込み深
さを従来の１．５倍にすることが現実的に可能となり、その場合加工能率を２倍強にすることができ、ステンレス鋼などの難削材に対しても有効な工作機械を提供する。
The present invention can suppress an increase in the dynamic friction coefficient in a low speed region, which is one of the disadvantages of a high-rigidity slide guide, and thereby improve the positioning accuracy of the slide guide. The present invention also has high chattering resistance (product of rigidity and damping capacity), which is a feature of the sliding guide, and can suppress the occurrence of chatter during machining, so that high-precision positioning is realized to achieve heavy cutting. It was possible to provide a corresponding type of machine tool. In addition, according to the present invention, for example, it is practically possible to increase the feed speed to 1.5 times the conventional speed and the cutting depth to 1.5 times the conventional speed. It is possible to provide a machine tool effective for difficult-to-cut materials such as stainless steel.
本発明の実施例につき、以下図面を参照しつつ説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図２は、工作機械の主要部を示す斜視図であり、その中ですべり案内が採用されることがある。例えば図２において、１が基台であり、２が基台上をすべり移動する移動体である。尚、３はコラム、４は主軸頭、５は主軸、６は主軸受、７はモータ、８は送りねじ、９は工具を示す。 FIG. 2 is a perspective view showing a main part of the machine tool, in which a sliding guide may be adopted. For example, in FIG. 2, 1 is a base, and 2 is a moving body that slides on the base. 3 is a column, 4 is a spindle head, 5 is a spindle, 6 is a main bearing, 7 is a motor, 8 is a feed screw, and 9 is a tool.
更に、基台１と移動体２の接触面１０を誇張拡大して模式的に示すと、一般的に図３のようになり、一部において基台１及び移動体２を構成する金属面同志が接触しており、基台１と移動体２間の空隙には潤滑油１１が満たされ油膜が形成され、移動体２の基台１上の移動を円滑にしている。
Furthermore, when the
本発明のような構成、即ち基台及び移動体の表面粗さを最大高さ０．１μｍ以下とし、基台と移動体との間に注入する油の４０℃における動粘度を８５〜１７０ｍｍ2／ｓとすることにより、移動体の速度に対する動摩擦係数の関係は図４のようになる。図４よりわかるように、動摩擦係数は低速度領域においても０．０２〜０．０４程度の低い値ですべり速度に依存しない。この動摩擦係数の値は従来技術における０．１程度（図１参照）と比べ、格段に改善されている。 The structure as in the present invention, that is, the surface roughness of the base and the moving body is set to a maximum height of 0.1 μm or less, and the kinematic viscosity at 40 ° C. of the oil injected between the base and the moving body is 85 to 170 mm 2. By setting / s, the relationship of the dynamic friction coefficient to the speed of the moving body is as shown in FIG. As can be seen from FIG. 4, the dynamic friction coefficient is a low value of about 0.02 to 0.04 and does not depend on the sliding speed even in the low speed region. The value of this dynamic friction coefficient is remarkably improved as compared with about 0.1 in the prior art (see FIG. 1).
以下、実施例毎に具体的にデータを示して説明する。 Hereinafter, specific data will be shown and described for each embodiment.
図５は、基台として鋼（表面粗さの最大高さが０．１０μｍ）、移動体として鋼（表面粗さの最大高さが０．１０μｍ）を使用し、基台のすべり速度１〜６０００ｍｍ／ｍｉｎにおける動摩擦係数（単位は無次元）の測定結果を示す。図中の鋼／鋼（０．１０／０．１０）は、移動体として表面粗さの最大高さが０．１０μｍの鋼、基台として表面粗さの最大高さが０．１０μｍの鋼を使用したことを示す。また、０．１ＭＰａは本測定において移動体に負荷した垂直荷重による面圧の大きさを示す。また、図中のＷＡＹ６８（２１．５℃）は、インフィニティ株式会社の純植物性潤滑液ＷＡＹ６８（４０℃における動粘度は８５．９ｍｍ2／ｓ、２１．５℃におけるそれは２１５．２ｍｍ2／ｓである）を使用し、測定を２１．５℃の雰囲気温度下で行ったことを示す。測定した動摩擦係数の値にばらつきがあるため、一つのすべり速度に対して実験を３〜５回繰り返した。各測定で得られた動摩擦係数の値を図５中の白丸印で示す。図中の線は、各すべり速度におけるそれらの動摩擦係数の測定値の平均値を滑らかな曲線で結んだものである。 FIG. 5 shows a case where steel (maximum surface roughness is 0.10 μm) is used as a base, and steel (maximum height of surface roughness is 0.10 μm) is used as a moving body. The measurement result of the dynamic friction coefficient (unit is dimensionless) in 6000 mm / min is shown. Steel / steel (0.10 / 0.10) in the figure is a steel having a maximum surface roughness of 0.10 μm as a moving body, and a steel having a maximum surface roughness of 0.10 μm as a base. Indicates that was used. Moreover, 0.1 MPa shows the magnitude | size of the surface pressure by the vertical load loaded on the moving body in this measurement. Further, WAY68 (21.5 ℃) in the figure, is that in kinematic viscosity 85.9mm 2 /s,21.5℃ in pure vegetable lubricant WAY68 (40 ℃ infinity LTD 215.2mm 2 / s It is shown that the measurement was performed under an atmospheric temperature of 21.5 ° C. Since the measured value of the dynamic friction coefficient varies, the experiment was repeated 3 to 5 times for one sliding speed. The value of the dynamic friction coefficient obtained by each measurement is indicated by white circles in FIG. The lines in the figure are obtained by connecting the average values of the measured values of the dynamic friction coefficient at each sliding speed with a smooth curve.
本実施例で使用した基台および移動体は、大同アミスター株式会社の冷間金型鋼（商品番号Ｇ０４、Ｃ０．６５％，Ｓｉ０．３％，Ｍｎ２．０％，Ｃｒ１．０％，Ｍｏ１．４％）であり、焼入れ（６５０℃で３０分保持後、８５０℃で３０分保持し、水冷）と焼戻し（２００℃で３０分保持した後、空冷）の熱処理を施したものである。この熱処理の後、基台および移動体を研削加工するとともに、ペーパーによる研磨と０．３μｍのアルミナによるバフ研磨で所定の表面粗さに仕上げた。基台と接触する移動体の案内面の大きさは１０ｍｍ×１０ｍｍとした。また、研削加工時に基台と移動体に付加される磁力が動摩擦係数に及ぼす影響を小さくするため、いずれの試験片も消磁した。 The base and the moving body used in this example were cold die steel (product number G04, C0.65%, Si0.3%, Mn2.0%, Cr1.0%, Mo1.4, manufactured by Daido Amister Co., Ltd. %) And subjected to heat treatment of quenching (holding at 650 ° C. for 30 minutes, holding at 850 ° C. for 30 minutes and water cooling) and tempering (holding at 200 ° C. for 30 minutes and then air cooling). After this heat treatment, the base and the movable body were ground and finished to a predetermined surface roughness by polishing with paper and buffing with 0.3 μm alumina. The size of the guide surface of the moving body that contacts the base was 10 mm × 10 mm. In addition, all the test pieces were demagnetized in order to reduce the influence of the magnetic force applied to the base and the moving body during the grinding process on the dynamic friction coefficient.
移動体と基台の摺動時の動摩擦係数の測定には、新東科学株式会社の表面性測定機トライボギア（商品記号はＴｙｐｅ１４ＦＷ）を使用した。この測定機は、案内面に対して垂
直な荷重Ｐ（９．８１Ｎ）を負荷した状態で、基台と移動体を１〜６０００ｍｍ／ｍｉｎで摺動させ、基台と移動体の摺動に伴って発生する摩擦力Ｆを検出することにより、ＦをＰで除算した動摩擦係数を測定する装置である。本実施例では、移動体と基台の接触面に作用する単位面積当りの荷重（面圧）は、（９．８１Ｎ）／（１０ｍｍ×１０ｍｍ）≒０．１ＭＰａである。この面圧は、従来の工作機械の案内面にかかる面圧がおよそ０．１ＭＰａであることを参考にして決めた。実験は、基台および移動体を試験機のテーブルおよび平面圧子に固定し、ＷＡＹ６８を基台の摺動面に塗布した状態で移動体と基台を接触させた後、表面性測定機のテーブル移動の指令を与えて行った。
A surface property measuring machine tribogear (product code: Type 14FW) manufactured by Shinto Kagaku Co., Ltd. was used to measure the dynamic friction coefficient when the moving body and the base slide. This measuring machine slides the base and the moving body at 1 to 6000 mm / min in a state where a load P (9.81 N) perpendicular to the guide surface is applied, thereby sliding the base and the moving body. By detecting the frictional force F that accompanies it, it is a device that measures the dynamic friction coefficient obtained by dividing F by P. In this embodiment, the load per unit area (surface pressure) acting on the contact surface between the moving body and the base is (9.81 N) / (10 mm × 10 mm) ≈0.1 MPa. This surface pressure was determined with reference to the fact that the surface pressure applied to the guide surface of a conventional machine tool was approximately 0.1 MPa. In the experiment, the base and the moving body are fixed to the table and the flat indenter of the test machine, and after the WAY 68 is applied to the sliding surface of the base, the moving body and the base are brought into contact, and then the table of the surface property measuring machine A movement command was given.
図６は、図５の特性図の横軸（すべり速度）のスケールを拡大して示したもので、低すべり速度の領域の状況をより詳細に表している。 FIG. 6 is an enlarged view of the scale of the horizontal axis (sliding speed) in the characteristic diagram of FIG. 5, and shows the situation in the region of the low sliding speed in more detail.
図５、図６から云えることは、すべり速度が１００ｍｍ／ｍｉｎ程度の低速度の領域でも動摩擦係数が０．０２程度の低い値を示している。 What can be said from FIGS. 5 and 6 shows that the dynamic friction coefficient is a low value of about 0.02 even in a low speed region where the sliding speed is about 100 mm / min.
図７は、基台として鋼（表面粗さの最大高さが０．１０μｍ）、移動体として鋼（表面粗さの最大高さが０．１０μｍ）を使用し、基台のすべり速度１〜６０００ｍｍ／ｍｉｎにおける動摩擦係数の測定結果を示す。図中の鋼／鋼（０．１０／０．１０）は、移動体として表面粗さの最大高さが０．１０μｍの鋼、基台として表面粗さの最大高さが０．１０μｍの鋼を使用したことを示す。また、０．１ＭＰａは本測定において移動体に負荷した垂直荷重による面圧の大きさを示す。また、図中のＷＡＹ１２０（２１．５℃）は、インフィニティ株式会社の純植物性潤滑液ＷＡＹ１２０（４０℃における動粘度は１７０．３ｍｍ2／ｓ、２１．５℃におけるそれは４９７．１ｍｍ2／ｓである）を使用し、測定を２１．５℃の雰囲気温度下で行ったことを示す。測定した動摩擦係数の値にばらつきがあるため、一つのすべり速度に対して実験を３〜５回繰り返した。各測定で得られた動摩擦係数の値を図７中の白丸印で示す。図中の線は、各すべり速度におけるそれらの動摩擦係数の測定値の平均値を滑らかな曲線で結んだものである。 FIG. 7 uses steel (maximum height of surface roughness of 0.10 μm) as a base and steel (maximum height of surface roughness of 0.10 μm) as a moving body. The measurement result of the dynamic friction coefficient in 6000 mm / min is shown. Steel / steel (0.10 / 0.10) in the figure is steel having a maximum surface roughness of 0.10 μm as a moving body, and steel having a maximum surface roughness of 0.10 μm as a base. Indicates that was used. Moreover, 0.1 MPa shows the magnitude | size of the surface pressure by the vertical load loaded on the moving body in this measurement. Further, WAY120 (21.5 ℃) in the figure, is that in kinematic viscosity 170.3mm 2 /s,21.5℃ the pure vegetable lubricant WAY120 (40 ℃ infinity LTD 497.1mm 2 / s It is shown that the measurement was performed under an atmospheric temperature of 21.5 ° C. Since the measured value of the dynamic friction coefficient varies, the experiment was repeated 3 to 5 times for one sliding speed. The value of the dynamic friction coefficient obtained in each measurement is indicated by white circles in FIG. The lines in the figure are obtained by connecting the average values of the measured values of the dynamic friction coefficient at each sliding speed with a smooth curve.
本実施例で使用した基台および移動体の詳細は実施例１と同様で、図８は図７の特性図の横軸（すべり速度）のスケールを拡大して示したものである。 The details of the base and the moving body used in this example are the same as in Example 1, and FIG. 8 is an enlarged view of the scale of the horizontal axis (sliding speed) in the characteristic diagram of FIG.
図７、図８から云えることは、すべり速度が１０ｍｍ／ｍｉｎ程度の低速度の領域でも動摩擦係数が０．０２５程度の低い値を示している。 7 and 8 show that the dynamic friction coefficient is as low as about 0.025 even in a low speed region where the sliding speed is about 10 mm / min.
（参考例１）
図９は、基台として鋼（表面粗さの最大高さが０．１０μｍ）、移動体として鋼（表面粗さの最大高さが０．１０μｍ）を使用し、基台のすべり速度１〜６０００ｍｍ／ｍｉｎにおける動摩擦係数の測定結果を示す。図中の鋼／鋼（０．１０／０．１０）は、移動体として表面粗さの最大高さが０．１０μｍの鋼、基台として表面粗さの最大高さが０．１０μｍの鋼を使用したことを示す。また、０．１ＭＰａは本測定において移動体に負荷した垂直荷重による面圧の大きさを示す。また、図中のＷＡＹ１５（２１．５℃）は、インフィニティ株式会社の純植物性潤滑液ＷＡＹ１５（４０℃における動粘度は３２．０ｍｍ2／ｓ、２１．５℃におけるそれは６０．３ｍｍ2／ｓである）を使用し、測定を２１．５℃の雰囲気温度下で行ったことを示す。測定した動摩擦係数の値にばらつきがあるため、一つのすべり速度に対して実験を３〜５回繰り返した。各測定で得られた動摩擦係数の値を図９中の白丸印で示す。図中の線は、各すべり速度におけるそれらの動摩擦係数の測定値の平均値を滑らかな曲線で結んだものである。
(Reference Example 1)
FIG. 9 shows a case where steel (maximum surface roughness is 0.10 μm) is used as a base and steel (maximum height of surface roughness is 0.10 μm) is used as a moving body. The measurement result of the dynamic friction coefficient in 6000 mm / min is shown. Steel / steel (0.10 / 0.10) in the figure is steel having a maximum surface roughness of 0.10 μm as a moving body, and steel having a maximum surface roughness of 0.10 μm as a base. Indicates that was used. Moreover, 0.1 MPa shows the magnitude | size of the surface pressure by the vertical load loaded on the moving body in this measurement. Further, WAY15 (21.5 ℃) in the figure, is that in kinematic viscosity 32.0mm 2 /s,21.5℃ in pure vegetable lubricant WAY15 (40 ℃ infinity LTD 60.3 mm 2 / s It is shown that the measurement was performed under an atmospheric temperature of 21.5 ° C. Since the measured value of the dynamic friction coefficient varies, the experiment was repeated 3 to 5 times for one sliding speed. The value of the dynamic friction coefficient obtained in each measurement is indicated by white circles in FIG. The lines in the figure are obtained by connecting the average values of the measured values of the dynamic friction coefficient at each sliding speed with a smooth curve.
本参考例で使用した基台および移動体の詳細は実施例１と同様で、図１０は図９の特性
図の横軸（すべり速度）のスケールを拡大して示したものである。図１０のすべり速度１０ｍｍ／ｍｉｎに対する動摩擦係数は０．１以上の大きな値となったため、それ以下のすべり速度における動摩擦係数については測定していない。図９、図１０から云えることは、すべり速度が１００ｍｍ／ｍｉｎ程度はともかく、それ以下の領域で動摩擦係数が大幅に増加しており、本発明の意図する効果が得られない。
The details of the base and the moving body used in this reference example are the same as those of the first embodiment, and FIG. 10 is an enlarged view of the scale of the horizontal axis (sliding speed) in the characteristic diagram of FIG. Since the dynamic friction coefficient with respect to the sliding speed of 10 mm / min in FIG. 10 is a large value of 0.1 or more, the dynamic friction coefficient at the sliding speed below that is not measured. What can be said from FIGS. 9 and 10 is that the sliding friction rate is about 100 mm / min, but the dynamic friction coefficient is greatly increased in the region below it, and the intended effect of the present invention cannot be obtained.
（参考例２）
図１１、図１２、図１３は、基台としていずれも鋳鉄（表面粗さの最大高さが１．８５μｍ）、移動体として鋳鉄（表面粗さの最大高さが１．６３μｍ）を使用し、基台のすべり速度１〜６０００ｍｍ／ｍｉｎにおける動摩擦係数の測定結果を示す。図中の鋳鉄／鋳鉄（１．６３／１．８５）は、移動体として表面粗さの最大高さが１．６３μｍの鋳鉄、基台として表面粗さの最大高さが１．８５μｍの鋳鉄を使用したことを示す。また、０．１ＭＰａは本測定において移動体に負荷した垂直荷重による面圧の大きさを示す。また、図中のＷＡＹ１５（２１．５℃）は、インフィニティ株式会社の純植物性潤滑液ＷＡＹ１５を使用し、測定を２１．５℃の雰囲気温度下で行ったことを示し、ＷＡＹ６８（２２．０℃）、ＷＡＹ１２０（２２．０℃）は、それぞれインフィニティ株式会社の純植物性潤滑液ＷＡＹ６８、ＷＡＹ１２０を使用し、測定を２２．０℃の雰囲気温度下で行ったことを示す。測定した動摩擦係数の値にばらつきがあるため、一つのすべり速度に対して実験を３〜５回繰り返した。各測定で得られた動摩擦係数の値を図１１、図１２、図１３中の白丸印で示す。図中の線は、各すべり速度におけるそれらの動摩擦係数の測定値の平均値を滑らかな曲線で結んだものである。
(Reference Example 2)
11, 12, and 13, cast iron (maximum height of surface roughness is 1.85 μm) is used as the base, and cast iron (maximum height of surface roughness is 1.63 μm) is used as the moving body. The measurement result of the dynamic friction coefficient in the sliding speed of 1-6000 mm / min of a base is shown. Cast iron / cast iron (1.63 / 1.85) in the figure is a cast iron having a maximum surface roughness of 1.63 μm as a moving body, and a cast iron having a maximum surface roughness of 1.85 μm as a base. Indicates that was used. Moreover, 0.1 MPa shows the magnitude | size of the surface pressure by the vertical load loaded on the moving body in this measurement. Moreover, WAY15 (21.5 degreeC) in a figure shows that the pure plant-type lubricating fluid WAY15 of Infinity Co., Ltd. was used and the measurement was performed under the atmospheric temperature of 21.5 degreeC, and WAY68 (22.0 ° C.) and WAY 120 (22.0 ° C.) indicate that the pure vegetable lubricants WAY 68 and WAY 120 manufactured by Infinity Co., Ltd. were used, respectively, and the measurement was performed at an ambient temperature of 22.0 ° C. Since the measured value of the dynamic friction coefficient varies, the experiment was repeated 3 to 5 times for one sliding speed. The value of the dynamic friction coefficient obtained in each measurement is indicated by white circles in FIGS. 11, 12, and 13. The lines in the figure are obtained by connecting the average values of the measured values of the dynamic friction coefficient at each sliding speed with a smooth curve.
図１１、図１２、図１３から云えることは、すべり速度が１０００ｍｍ／ｍｉｎ以下の領域において、動摩擦係数が０．１程度以上となり、本発明の意図する効果が得られない。 11, 12, and 13, the dynamic friction coefficient is about 0.1 or more in a region where the sliding speed is 1000 mm / min or less, and the intended effect of the present invention cannot be obtained.
１ 基台
２ 移動体
３ コラム
４ 主軸頭
５ 主軸
６ 主軸受
７ モータ
８ 送りねじ
９ 工具
１０ 基台と移動体の接触面
１１ 潤滑油
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| JP2011235409A (en) * | 2010-05-11 | 2011-11-24 | Tomotetsu Land:Kk | Machining method for sliding surface and cast iron material |
| CN102672544A (en) * | 2012-06-12 | 2012-09-19 | 南通恒鼎重型机床有限公司 | Machine tool |
| CN105215439B (en) * | 2014-07-04 | 2017-12-05 | 扬州鑫昊重型机械有限公司 | High-alloy steel pipe Cold core setting machine |
| CN104972302A (en) * | 2015-06-30 | 2015-10-14 | 苏州石丸英合精密机械有限公司 | Module assembly of automobile door hinge assembling line |
| TWI661135B (en) * | 2018-01-03 | 2019-06-01 | 直得科技股份有限公司 | Structure of micro sliding base and linear slide rail |
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| JP2563686B2 (en) * | 1991-04-18 | 1996-12-11 | 株式会社 岡本工作機械製作所 | Sliding guide for machine tools |
| JPH09229296A (en) * | 1996-02-20 | 1997-09-05 | Nippon Steel Corp | Sliding device and sliding member |
| JPH11201156A (en) * | 1998-01-19 | 1999-07-27 | Nippon Seiko Kk | Sliding guide unit |
| JP2002130268A (en) * | 2000-10-25 | 2002-05-09 | Okuma Corp | Guideway lubrication mechanism |
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