㠽ข⋵↥ᬺᛛⴚ࠮ࡦ࠲࡯‫⎇ޓ‬ⓥႎ๔ͳ  ᧚ᢱ⇣ᣇᕈߣ࠼࡝࡞ടᎿᕈߩ㑐ଥߦߟ޿ߡ
Relation Between Material Anisotropy and Drilling Performance૒⮮ፏᒄ࡮㋈ᧁᅢ᣿࡮⩵੗৻᮸࡮ട⮮᣿
Takahiro Sato, Yoshiaki Suzuki, Kazuki Kikui, Akira Kato৻⥸ߦ᧚ᢱ⵾ㅧᎿ⒟ߩਛߢ࿶ᑧࠍⴕߞߚ㋕㍑᧚ᢱߪ‫᧚ޔ‬ᢱ⇣ᣇᕈࠍᜬߜ‫᧚ޔ‬ᢱߩᣇะߦࠃߞߡߪ᧚ᢱ․ᕈ
㧔ᒁᒛᒝᐲ࡮િ߮╬㧕ߦᏅ߇↢ߓࠆ‫᧚ޔߢߎߘޕ‬ᢱ⇣ᣇᕈࠍᜬߞߚⵍ೥᧚㧔5-&㧕ࠍ⇣ߥࠆᣇะ߆ࠄ࠼࡝࡞
ടᎿࠍⴕ޿‫ߩ߈ߣߩߘޔ‬Ꮏౕ៺⠻╬ߦߟ޿ߡ㆑޿ࠍᬌ⸽ߒߚ‫⚿ߩߘޕ‬ᨐ‫ޔ‬࿶ᑧᣇะߦടᎿࠍⴕ߁ߣᎿౕ៺⠻߇ㅴⴕߒ߿ߔ޿ߎߣ߇ࠊ߆ߞߚ‫ޕ‬Generally the iron and steel materials that have been rolled have materials anisotropy, and machine characteristics areknown to be different by the direction of materials. In mold-making industry, the direction of the material might be chosen in consideration of the stress action at the press. However, it is not clarified of the relation between cutting performance and the material anisotropy. Therefore it drilled work material of the difficult direction of SKD11 and examinedfrank wear. As a result, it was clarified to relation between material anisotropy and drilling performance.

 ߪߓ߼ߦߘߎߢ᧚ᢱ⇣ᣇᕈ߇‫ޔ‬ಾ೥ടᎿߦਈ߃ࠆᓇ㗀ࠍ⺞ᩏ৻⥸ߦ‫ޔ‬㋕㍑᧚ᢱߩ⵾ㅧᎿ⒟ߢ࿶ᑧࠍⴕ߁᧚ᢱߪ‫ޔ‬ߔࠆߚ߼ߦ‫ޔ‬὾౉㍑ 5-& ߩߘࠇߙࠇߩࡈࠔࠗࡃ࡯ᣇࡒࠢࡠ⊛ߦ⷗ࠆߣ࿑㧝ߦ␜ߔࠃ߁ߦ㊄ዻ⚵❱߇ࡈࠔࠗะߦ࠼࡝࡞ടᎿࠍⴕ޿‫࡞࡝࠼ߩ߈ߣߩߘޔ‬ടᎿᕈ㧔Ꮏࡃ࡯ᣇะ㧔࿶ᑧᣇะ㧕ߦᵹࠇ‫᧚ޔ‬ᢱ⇣ᣇᕈࠍ␜ߔߎߣౕ៺⠻‫ޔ‬ಾ೥ᛶ᛫‫ޔ‬ടᎿᢿ㕙⁁ᘒ‫ޔ‬ಾࠅድ㧕ߦߟ޿ߡ߇⍮ࠄࠇߡ޿ࠆ‫᧚ߩߎޕ‬ᢱ⇣ᣇᕈߦ઻߁ᯏ᪾⊛ᕈ⾰ߪ‫ޔ‬ᬌ⸽ࠍⴕߞߚ‫ޕ‬࿑㧞‫⴫ޔ‬㧝ߦ␜ߔࠃ߁ߦᣇะߦࠃߞߡᄢ߈ߊ⇣ߥࠆߚ߼‫ޔ‬㊄ဳ⵾ㅧડᬺߢߪ‫᧚ޔ‬ᢱ߆ࠄဳ᧚ࠍណขߔࠆ㓙ߦ‫ޔ‬ ታ㛎ⵝ⟎߅ࠃ߮ታ㛎ᣇᴺࡊ࡟ࠬᤨߩᔕജ૞↪ߩ․㐳ࠍ⠨ᘦߒߡᣇะࠍㆬ߱ߎߣ߽޽ࠆ ‫ޕ‬૶↪ߒߚታ㛎ⵝ⟎ࠍ⴫㧞ߦ␜ߔ‫ޕ‬ታ㛎ⵝ⟎ߪ‫ဳ❑ޔ‬ࡑࠪ࠾ࡦࠣ࠮ࡦ࠲࡯ߦಾ೥േജ⸘ࠍขࠅઃߌ‫ߩߘޔ‬਄1)᧚ᢱ⇣ᣇᕈ߇⃻ࠇ߿ߔ޿ 5-& ߪ‫ޔ‬㊄ဳߩߺߥࠄߕߦⵍ೥᧚ࠍ࿕ቯߒታ㛎ࠍⴕߞߚ‫ޕ‬ⵍ೥᧚ߪ‫ޔ‬5-& ߩ὾౉ࠇ὾ᚯߒ᧚ᢱߢ‫⎬ޔ‬ᐲߪ ᴦౕㇱຠ╬ߐ߹ߑ߹ߥᣇ㕙ߢ೑↪ߐࠇߡ޿ࠆ‫ޕ‬ㇱຠߣߒߡടᎿ♖ᐲࠍⷐ᳞ߐࠇࠆߚ߼‫ޔ‬ᾲಣℂᓟߦಾ೥ࠍⴕ߁ᔅⷐ߇޽ࠆ߇⎬ᐲ߇㜞޿ߚ߼‫ޔ‬ಾ೥ᕈߦ໧㗴߇޽ࠆ‫ޕ‬ࡈࠔࠗࡃ࡯ᣇะ

㽳㽲࿶ᑧᣇะ㽴
࿑㧞 ᒁᒛ⹜㛎 ណขᣇะ⴫㧝 ᧚ᢱᣇะᕈߣᯏ᪾⊛ᕈ⾰ߩ㑐ଥ  ࿑㧝 ᧚ᢱ⇣ᣇᕈࠍᜬߟ㊄ዻ⚵❱㧔5-&㧕ណขᣇะ⹜㛎ᣇᴺ100Ǵm


̶19̶

ᒁᒛࠅ

ԘԙԚ

ࡈࠔࠗࡃ࡯ᣇะ
ࡈࠔࠗࡃ࡯qᣇะࡈࠔࠗࡃ࡯⋥ⷺᣇะ⎕ᢿᔕജિ߮㧔㧑㧕MIOO
ࠞᚲᐔဋ୯ߢ *4% ߢ޽ߞߚ‫ޔߚ߹ޕ‬5-& ߩࡈࠔ ታ㛎⚿ᨐߣ⠨ኤࠗࡃ࡯ᣇะߣߘࠇߦኻߒߡ⋥ⷺᣇะ߆ࠄ⷗ߚ㊄ዻ⚵❱ Ꮏౕ៺⠻ࠍ࿑㧟ߦ␜ߔ‫ޕ‬ㅢᏱ㕖Ᏹߦ⎬޿ %T ὇ൻ‛╬㧔౮⌀ߩ⊕࿑㧡ߦ᧚ᢱᣇะߣ࡚ࠪ࡞࠳࡯ㇱߩᎿౕ៺⠻㊂ߩ㑐ଥ޿႙㧕ࠍ฽߹ߥ޿᧚ᢱߪ‫ޔ‬὾౉ࠇ὾ᚯߒࠍⴕ߁ߎߣߦࠍ␜ߔ‫ޔ߅ߥޕ‬ታ㛎ߪ㧞࿁ታᣉߒ‫ߩ߈ߣߩߘޔ‬ᐔဋ୯ࠃߞߡ᧚ᢱߩᣇะᕈߪ⭯ࠇࠆ‫ ߒ߆ߒޕ‬5-& ߪ‫☻ޔ‬ᄢࠍ␜ߔ‫ߩߎޕ‬࿑ࠃࠅ‫ⷺ⋥࡯ࡃࠗࠔࡈޔ‬ᣇะߦടᎿߔࠆߥ৻ᰴ὇ൻ‛㧔ǴO ⒟ᐲ㧕ߣ‫ޔ‬ᓸ⚦ߥੑᰴ὇ൻ‛㧔㧡ࠃࠅ߽‫࡯ࡃࠗࠔࡈޔ‬ᣇะߦടᎿߒߚᣇ߇Ꮏౕ៺⠻ߩㅴǴO ⒟ᐲ㧕ߣ߇޽ࠅ‫৻ޔ‬ᰴ὇ൻ‛ߪᾲಣℂߦࠃࠅᄌൻⴕ߇ᣧ޿ߎߣ߇ࠊ߆ࠆ‫ߚ߹ޕ‬ടᎿⓣᢙ߇Ⴧ߃ࠆߦᓥ޿‫ޔ‬ߖߕ᧚ᢱ⇣ᣇᕈࠍᜬߞߚ߹߹ߢ޽ࠆ߇‫ޔ‬ੑᰴ὇ൻ‛ߪ‫ޔ‬Ꮏౕ៺⠻㊂ߩ㆑޿߇ᄢ߈ߊߥߞߡ߈ߡ޿ࠆ‫ޕ‬ᾲಣℂߦࠃࠅၮ࿾ߦṁߌㄟࠎߛࠅ‫ޔ‬ᨆ಴ߒߚࠅߔࠆߚ߼‫ޔ‬ᣇะᕈߪ⭯ࠇࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ  ‫ޕ‬ߎߩߣ߈ߩᎿౕߩ⁁ᘒࠍ࿑㧢ߦ␜ߔ‫ߩߎޕ‬࿑ࠃࠅ‫ޔ‬ߤߜࠄߩ᧦ઙߢ߽㧢㧜ⓣࠍ⿧߃ࠆߣ࡚ࠪ࡞࠳࡯ㇱߦṁᎿౕߪ‫ޔ‬࿑㧠ߦ␜ߔ὾౉㍑↪ߩ࠼࡝࡞ 6K5K0 ♽ࠦ࡯⌕߇⷗ࠄࠇࠆ‫ޔߚ߹ޕ‬ടᎿⓣᢙߩჇടߦ઻޿‫ޔ‬ಾ೥᷷ᐲ߇਄᣹ߒ‫ޔ‬Ꮏౕ⴫㕙ߩ⦡߇ᄌൻߒߡ޿ࠆߎߣ߇ࠊ߆࠹࠶࠼⿥⎬࠼࡝࡞ࠍ↪޿ߡታ㛎ࠍⴕߞߚ‫ޕ‬⴫㧟ߦಾ೥᧦ઙࠍ␜ߔ‫ޕ‬ಾ೥᧦ઙߣߒߡߪ‫ࡠ࠲ࠞޔ‬ࠆ‫ߩ⦡ޕ‬㆑޿ߦ⌕⋡ߔࠆߣ‫࡯ࡃࠗࠔࡈޔ‬ᣇะߦടᎿߒࠣߩផᅑ᧦ઙࠍ↪޿ߡടᎿࠍⴕ޿‫ޔ‬ടᎿᣇะࠍࡈࠔࠗߚᎿౕ⴫㕙߇ᣧߊ߆ࠄᄌ⦡ߒߡ޿ࠆߎߣ߇ࠊ߆ࠆ‫ߎޕ‬ࡃ࡯ᣇะߦะ߆ߞߡⓣടᎿߒߚ㓙ߣ‫࡯ࡃࠗࠔࡈޔ‬ᣇะࠇߪ‫ޔ‬Ꮏౕ៺⠻ߩㅴⴕߩ㆑޿ߦࠃࠆಾ೥᷷ᐲߩᓇ㗀߇ߦኻߒߡ⋥ⷺᣇะߦะ߆ߞߡⓣടᎿߒߚ㓙ߩᎿౕ៺⠻‫ޔ‬⴫ࠇߡ޿ࠆߣផ᷹ߐࠇࠆ‫ޕ‬ടᎿ㕙‫ޔ‬ಾ೥ᛶ᛫୯‫ޔ‬ടᎿ㕙☻ߐࠍᲧセߒߚ‫ޕ‬ಾ೥ᴤߪᬀ‛♽ਇ᳓ṁᕈಾ೥ᴤ೷ࠍ↪޿ߡ‫ߩ࡞࡝࠼ޔ‬㕒⊛ᝄࠇ㊂ߪ㧡ǴO એౝߣߒߚ‫ޕ‬⴫㧞 ታ㛎ⵝ⟎⴫㧟 ಾ೥᧦ઙ䊜䊷䉦䊷ဳᑼ䊙䉲䊆䊮䉫䉶䊮䉺䊷䉥䊷䉪䊙㩿ᩣ㪀㪤㪚㪄㪋㪭㪘ಾ೥േജ⸘䉨䉴䊤䊷㩿ᩣ㪀㪐㪉㪎㪉ട૶↪ᯏེ䊙䉟䉪䊨䉴䉮䊷䊒䊧䊷䉱䊷㗼ᓸ㏜㩿ᩣ㪀䉥䊛䊨䊮 㪭㪚㪋㪌㪇㪇㩿ᩣ㪀䉨䊷䉣䊮䉴 㪭㪢㪐㪌㪇㪇Ꮏ᧦ઙടᎿᣇᴺಾ೥ᴤ
ടᎿᷓ䈘ಾ೥ㅦᐲㅍ䉍㊂Ꮏౕ⓭಴䈚㊂Ꮏౕᓘᱛ䉁䉍ⓣടᎿ
ᬀ‛♽ਇ᳓ṁᕈಾ೥ᴤ㪈㪉㫄㫄䋨㪣㪆㪛㪔㪋䋩㪉㪇㫄㪆㫄㫀㫅㪇㪅㪇㪊㫄㫄㪆㫉㪼㫍㪊㪇㫄㫄㱢㪊㫄㫄C ࡈࠔࠗࡃ࡯ᣇะ D ࡈࠔࠗࡃ࡯⋥ⷺᣇะ࿑㧟 5-& ߩߘࠇߙࠇߩࡈࠔࠗࡃ࡯ᣇะߦ߅ߌࠆ㊄ዻ⚵❱




㪐㪇

 㪍㪇
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࿑㧠 6K5K0 ♽ࠦ࡯࠹࠶࠼⿥⎬Ꮏౕ
̶20̶㩷䍪䍅䍐䍨䍼䍎ᣇะ䋨㪈࿁⋡䋩㩷䍪䍅䍐䍨䍼䍎ᣇะ䋨㪉࿁⋡䋩㩷䍪䍅䍐䍨䍼䍎⋥ⷺᣇะ䋨㪈࿁⋡䋩㩷䍪䍅䍐䍨䍼䍎⋥ⷺᣇะ䋨㪉࿁⋡䋩㩷䍪䍅䍐䍨䍼䍎ᣇะᐔဋ୯㩷䍪䍅䍐䍨䍼䍎⋥ⷺᣇะᐔဋ୯㩷100Ǵm䉲䊢䊦䉻䊷ㇱ៺⠻㊂㩷㩿㱘㫄㪀100Ǵm㩷㪈㪌㪇㪈㪉㪇㪇㪉㪇㪋㪇㪍㪇 㪏㪇 㪈㪇㪇 㪈㪉㪇 㪈㪋㪇 㪈㪍㪇ടᎿⓣᢙ㩷㩿㪟㫀㫋㪀࿑㧡 ᧚ᢱᣇะᕈߣᎿౕ៺⠻㊂ߩ㑐ଥ㠽ข⋵↥ᬺᛛⴚ࠮ࡦ࠲࡯‫⎇ޓ‬ⓥႎ๔ͳ  ࡈࠔࠗࡃ࡯ᣇะߦടᎿߒߚᣇ߇⧯ᐓߢߪ޽ࠆ߇Ꮏౕߩ ಾࠅߊߕߩᒻᘒ࿑㧣ߦߘࠇߙࠇ⇣ߥࠆ᧚ᢱߩᣇะߦടᎿߒߚ㓙ߩઍ⽶⩄߇ᄢ߈޿ߎߣ߇ࠊ߆ࠆ‫ޕ‬⴫⊛ߥಾࠅߊߕᢿ㕙⚵❱౮⌀ࠍ␜ߔ‫ߩߎޕ‬࿑ࠃࠅ‫ࡈޔ‬ ⴫㕙☻ߐࠔࠗࡃ࡯ᣇะߦടᎿߒߚ㓙ߩಾࠅድߪ‫ࠇߒ߻ޔ‬ᒻߩಾ ടᎿᣇะߩ㆑޿ߦ߅ߌࠆಾ೥⃻⽎ࠍ⷗ࠆߚ߼ߦ‫ޔ‬࿑ࠅድߦߥߞߡ߅ࠅ‫ⷺ⋥࡯ࡃࠗࠔࡈޔ‬ᣇะߦടᎿߒߚ㓙㧥ߦᱛ߹ࠅⓣടᎿᓟߩⓣᐩ㕙ߩ⴫㕙⁁ᘒࠍ‫ޔ‬࿑  ߦⓣߩಾࠅድߪ‫ޔ‬ᵹࠇᒻߩಾࠅድߦߥߞߡ޿ࠆߎߣ߇ࠊ߆ᐩ㕙ߩ⴫㕙☻ߐࠍ␜ߔ‫ߩߎޕ‬࿑ࠃࠅ‫࡯ࡃࠗࠔࡈޔ‬ᣇะࠆ‫ޔߚ߹ޕ‬࿑㧟ߩ⚵❱౮⌀ห᭽‫ޔ‬὇ൻ‛ߩᒻ⁁ߦ㆑޿ߦടᎿࠍⴕ߁ߣࡈࠔࠗࡃ࡯⋥ⷺᣇะߣᲧߴߡో૕⊛ߦ߇⷗ฃߌࠄࠇࠆ‫ޕ‬ⓣᐩ㕙ߩ⴫㕙☻ߐ߇⚂㧞୚ᖡൻߒߡ޿ࠆߎߣ߇ࠊ߆ࠆ‫ޕ‬ ಾ೥ᛶ᛫߹ߚ‫ޔ‬஥㕙߆ࠄⓣਛᔃઃㄭߦⴕߊ߶ߤ⴫㕙☻ߐ߇⦟ᅢ࿑㧤ߦ㧝ⓣ⋡ߩࠬ࡜ࠬ࠻ജᵄᒻࠍ␜ߔ‫ߩߎޕ‬࿑ࠃࠅ‫ޔ‬䊐䉜䉟䊋䊷ᣇะ㪌ⓣ⋡䊐䉜䉟䊋䊷⋥ⷺᣇะ㪌ⓣ⋡㪉㪇ⓣ⋡㪉㪇ⓣ⋡ߦߥߞߡ޿ࠆ‫ޕ‬ⓣਛᔃᣇะⓣ஥㕙 㪘㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㪙㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㪚㩷ઃ
ㄭ㪍㪇ⓣ⋡

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㪈㪇㪇ⓣ⋡

㪈㪇㪇ⓣ⋡

C ࡈࠔࠗࡃ࡯ᣇะߦടᎿߒߚ㓙ߩⓣᐩ㕙࿑㧢 Ꮏౕ៺⠻⁁ᘒⓣਛᔃᣇะ

50Ǵm

50Ǵm

C ࡈࠔࠗࡃ࡯ᣇะ D ࡈࠔࠗࡃ࡯⋥ⷺᣇะD ࡈࠔࠗࡃ࡯⋥ⷺᣇะߦടᎿߒߚ㓙ߩⓣᐩ㕙࿑㧣 ಾࠅߊߕߩ⁁ᘒ࿑㧥 ⓣᐩ㕙ߩ⴫㕙⁁ᘒ㩷

㩷㪉㪇㪇㪇
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㩷䊐䉜䉟䊋䊷ᣇะ㩷䊐䉜䉟䊋䊷⋥ⷺᣇะ㪉㪋㪍㪏ⓣടᎿᷓ䈘㩷㩿㫄㫄㪀㪈㪇㪈㪉࿑㧤 㧝ⓣ⋡ߩࠬ࡜ࠬ࠻ജᵄᒻ

㪋㪊㩷䊐䉜䉟䊋䊷ᣇะ㩷䊐䉜䉟䊋䊷⋥ⷺᣇะ

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㪋㪇㪇

▚ⴚᐔဋ☻䈘㪩㪸㩷㩿㱘㫄㪀㩷㪍㪇㪇䉴䊤䉴䊃ജ㩷㩿㪥㪀ⓣ஥㕙 㪘㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㪙㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㪚㩷ઃㄭ㪈㪇㪙㪑㪈㪇㪇䌾㪈㪌㪇 㪚㪑㪉㪇㪇䌾㪉㪌㪇㪘㪑㪉㪌䌾㪎㪌⸘᷹૏⟎䋨ⓣ஥㕙䈎䉌䈱〒㔌䋩㩷㩿㱘㫄㪀࿑  ⓣᐩ㕙ߩ⴫㕙☻ߐ
̶21̶ ߅ࠊࠅߦ⻢ㄉᧄ⎇ⓥߢߪ‫ޔ‬಄㑆Ꮏౕ㍑ߢ޽ࠆ 5-& ߩ὾౉㍑ࠍ↪

ᧄ⎇ⓥߪ‫ޔ‬ᣣᧄ⥄ォゞᝄ⥝ળ߆ࠄ┹ベߩ෼⋉ߩ৻ㇱ޿ߡ࠼࡝࡞ടᎿࠍⴕ޿‫᧚ޔ‬ᢱᣇะᕈߣಾ೥⃻⽎ߣߩ㑐ߢ޽ࠆᯏ᪾Ꮏᬺᝄ⥝⾗㊄ߩ⵬ഥࠍฃߌߚ⸳஻ࠍ೑↪ߒଥࠍ⺞ᩏߒߚ‫ޕ‬ߡ⎇ⓥߒߚ߽ߩߢ޽ࠅ߹ߔ‫ޕ‬ߘߩ⚿ᨐ‫ޔ‬એਅߩࠃ߁ߥ⚿⺰ࠍᓧߚ‫ޕ‬㧝㧕ࡈࠔࠗࡃ࡯ᣇะࠃࠅࡈࠔࠗࡃ࡯⋥ⷺᣇะߦ࠼࡝࡞ෳ⠨ᢥ₂ടᎿߒߚᣇ߇‫ޔ‬Ꮏౕ߳ߩ⽶⩄߇ዊߐߊ‫ޔ‬Ꮏౕ៺⠻߇ᛥ೙ߐࠇࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬ ᴡ㊁౏৻⠴ᾲ᧚ടᎿ↪Ꮏౕᯏ᪾ᛛ
ⴚ8QN0QRR  㧞㧕ⓣᐩ㕙ߪ‫࡯ࡃࠗࠔࡈޔ‬ᣇะࠃࠅࡈࠔࠗࡃ࡯⋥ⷺᣇ ᣣ ┙ ㊄ ዻ Ꮏ ౕ ㍑ ᩣ ᑼ ળ ␠ ࡎ ࡯ ࡓ ࡍ ࡯ ࠫะߦടᎿߒߚᣇ߇‫⦟ޔ‬ᅢߥ⴫㕙⁁ᘒߦߥࠆߎߣ߇

74.JVVRYYYJKVCEJKOGVCNUVU%QLR\CVUWIࠊ߆ߞߚ‫ޕ‬CMWUVGGNAQTIJVONߎࠇߪ‫ޔ‬ᰴߩ㧞ߟߩේ࿃߇ផ᷹ߐࠇࠆ‫ޕ‬ ਛᎹ㊄ဳ↪὾౉ࠇ㍑ߩࠛࡦ࠼ࡒ࡞ടᎿߦ㑐ߔࠆ⎇Ԙ⎕უߩㅴዷᣇะߩ㆑޿ⓥ♖ኒᎿቇળ⹹8QN0QRR  ࿑  ߦ␜ߔࠃ߁ߦࡈࠔࠗࡃ࡯ᣇะߦടᎿࠍⴕ߁ߣ߈ߪ‫࡯ࡃࠗࠔࡈ߇಺ߩ࡞࡝࠼ޔ‬ᣇะߦኻߒߡ⋥ⷺᣇะߦ޽ߚࠆ‫ߩᤨߩߘޕ‬ಾࠅߊߕ↢ᚑ⃻⽎ߪ‫࡯ࡃࠗࠔࡈޔ‬Ꮏౕ⋥ⷺᣇะߦᎿౕߦࠃࠆ੉ⵚ߇ㅴዷߒ‫ޔ‬⎕უ߇⿠ߎࠆ‫ޕ‬⎕უᣇะߪ‫⴫ޔ‬㧝‫ޔ‬࿑  C ߦ␜ߔࠃ߁ߦᒁᒛᒝᐲ࡮ⵍ೥᧚䊐䉜䉟䊋䊷ᣇะિ߮߇ᄢ߈޿ᣇะߦㅴዷߔࠆߚ߼‫ޔ‬ಾ೥ᛶ᛫߇ᄢ߈ߊC ࡈࠔࠗࡃ࡯ᣇะߥࠅ‫ޔ‬Ꮏౕ៺⠻߇ㅴߺ‫⴫ޔ‬㕙☻ߐ߇ᖡൻߒߚ߽ߩߣផ᷹ߒߡ޿ࠆ‫ޕ‬Ꮏౕㅒߦ‫ⷺ⋥࡯ࡃࠗࠔࡈޔ‬ᣇะߦടᎿࠍⴕ߁ߣ߈ߪ‫ࡈޔ‬ࠔࠗࡃ࡯ᣇะߦᎿౕߦࠃࠆ੉ⵚ߇ㅴዷߒ‫ޔ‬⎕უ߇⿠ߎⵍ೥᧚䊐䉜䉟䊋䊷⋥ⷺᣇะࠆ‫ޕ‬⎕უᣇะߪ‫ޔ‬࿑  D ߦ␜ߔࠃ߁ߦᒁᒛᒝᐲ࡮િD ࡈࠔࠗࡃ࡯⋥ⷺᣇะ߮߇ዊߐ޿ᣇะߦㅴዷߔࠆߚ߼‫ޔ‬ಾ೥ᛶ᛫߇⧯ᐓዊߐ࿑  ಾࠅߊߕ↢ᚑ⃻⽎ᮨᑼ࿑ߊߥࠅ‫ޔ‬Ꮏౕ៺⠻߇ㅴߺߦߊ߆ߞߚߣផ᷹ߒߡ޿ࠆ‫ޕ‬ᄢԙ὇ൻ‛ߩᒻ⁁ߩ㆑޿ዊᎿౕ៺⠻ߩⷐ࿃ߢ߽޽ࠆ㕖Ᏹߦ⎬޿὇ൻ‛  ߩᒻ⁁ߩ㆑޿߽ᓇ㗀ߒߡ޿ࠆน⢻ᕈ߽޽ࠆ‫ޕ‬࿑  ߦ␜ߔࠃ߁ߦ‫࡯ࡃࠗࠔࡈޔ‬ᣇะߦടᎿߔࠆߣ಺వ߇὇ൻ‛ࠍ⋥ធಾ೥ߔࠆน⢻ᕈ߇ᄢ߈ߊߥࠆ‫ⷺ⋥࡯ࡃࠗࠔࡈޕ‬ᣇะߦടᎿߔࠆߣ὇ൻ‛ߪᒻ⁁ࠍ଻ߜߥ߇ࠄಾࠅߊߕߩᲣ᧚ౝߦ᛼ߒㄟ߹ࠇࠆߚ߼‫ޔ‬Ꮏౕኼ๮߇Ყセ⊛ᑧ߮ߚ߽ߩߣផ᷹ߐࠇࠆ 㧕‫ޕ‬䊐䉜䉟䊋䊷ᣇะ䊐䉜䉟䊋䊷⋥ⷺᣇะC ࡈࠔࠗࡃ࡯ᣇะ  D ࡈࠔࠗࡃ࡯⋥ⷺᣇะ࿑  ⎕უㅴዷᣇะߣᒁᒛᒝᐲߦߟ޿ߡ̶22̶