Copyright Ⓒ 2016 JSPE㪛㪈㪋  
P219-P220ᶞ⬡ᮦᩱ䛻䛚䛡䜛ᑠᚄ῝✰ຍᕤ᫬䛾䝷䜲䝣䝸䞁䜾ᢚไᕤල䛾㛤Ⓨ䠄ᆅ⊂䠅㫽ྲྀ┴⏘ᴗᢏ⾡䝉䞁䝍䞊㻌 䕿బ⸨ᓫᘯ䠈ෆእ⢭ᶵᕤᴗ䞞㻌 㛗㇂ᕝఙ୍䠈୰ᮧㄔ

Development of tool geometry to rifling control in small-diameter deep hole drilling process by resin material
Tottori Institute of Industrial Technology, Takahiro SATO, Naigai Seiki Kougyo CO., LTD., Shinichi HASEGAWA and Makoto NAKAMURA

Recently, the requirement for high quality hole machining is increasing, such as a nozzle forchemical-analysis machines, and a medical instrument. However because the stiffness of the drill for thesmall-diameter and deep hole is low, the hole is easily to generate rifling. As a result, the hole wallroughness is easy to be worse. In the present paper, the tool geometry to rifling control in small-diameterdeep hole drilling process by resin material was developed.
⥴ゝ㏆ᖺ་⒪ᶵჾࡸ໬Ꮫศᯒᶵჾ࡟⏝࠸ࡽࢀࡿྛ✀ᶞ⬡〇ࣀࢬࣝ〇ရࡣ㸪⁲ୗ⢭ᗘࡢྥୖࡸศᯒ⢭ᗘࡢྥୖࡀồࡵࡽࢀ࡚࠸ࡿ㸬ࡑࡢ⤖ᯝ㸪ࣀࢬࣝ✰ࡢᑠᚄ໬࣭㧗ရ㉁໬࡟ຍ࠼῝✰ຍᕤ໬ࡀせồࡉࢀ࡚࠸ࡿ㸬ࡋ࠿ࡋ㸪ᑠᚄ῝✰ຍᕤࡣ㸪኱ᚄࢻࣜࣝ࡜ẚ㍑ࡋ࡚ࢻࣜࣝ๛ᛶࡀపୗࡍࡿࡓࡵ㸪ษࡾࡃࡎ᤼ฟ୙Ⰻࡸษ๐ ᗘࡢᒁᡤⓗୖ᪼࡟క࠺✰ቨ㠃ရ㉁ᝏ໬ࡀㄢ㢟࡛࠶ࡿ㸬㔠ᒓᮦᩱ࡟࠾ࡅࡿ✰ຍᕤ࡛ࡣ㸪✰ቨ㠃࡟ࢫࣃ࢖ࣛࣝୖࡢയ㸪࠸ࢃࡺࡿࣛ࢖ࣇࣜࣥࢢࡀ✰ୖ㠃࡟Ⓨ⏕ࡍࡿࡇ࡜ࡀሗ࿌ࡉࢀ࡚࠸ࡿ1)2)3)㸬ࡇࢀࡽࡢ◊✲࡛ࡣ㸪๛ᛶࡢప࠸ࢻ࡛ࣜࣝຍᕤࡍࡿ࡜ษ๐㈇Ⲵ࡟ࡼࡾᅇ㌿᪉ྥࡢ఩┦㐜ࢀࡀ⏕ࡌ㸪ࡉࡽ࡟ษ๐ຊࡢኚ໬࡞࡝࡟㉳ᅉࡍࡿ⮬ບ᣺ື࡟ࡼࡾྑࡡࡌࢀࡢࣛ࢖ࣇࣜࣥࢢࡀⓎ⏕ࡍࡿ࡜ㄝ᫂ࡉࢀ࡚࠸ࡿ㸬⿕๐ᮦࡀᶞ⬡ࡢሙྜ࡛ࡣ㸪ᅗ1࡟♧ࡍࡼ࠺࡟✰ᗏ㒊࡟ࣛ࢖ࣇࣜࣥࢢࡢⓎ⏕ࡍࡿࡇ࡜ࡀⴭ⪅ࡽࡢሗ࿌ 4)࡛᫂ࡽ࠿࡟ࡉࢀ࡚࠸
ࡿ㸬ࡑࡢⓎ⏕せᅉࡣᇶᮏⓗ࡞㒊ศ࡟࠾࠸࡚㔠ᒓຍᕤࡢሙྜ࡜ྠᵝ࡛࠶ࡿ࡜⪃࠼ࡿ㸬ࡓࡔࡋᶞ⬡ຍᕤࡢሙྜ㸪✰ᗏ㒊࡟࠾࠸࡚ษࡾࡃࡎ᤼ฟ୙Ⰻࡸᶞ⬡ࡢ⇕⭾ᙇ࣭཰⦰࡟క࠸✺Ⓨⓗ࡞ࢺࣝࢡୖ᪼ࡀⓎ⏕ࡍࡿ㸬ࡑࡢ⤖ᯝ㸪ࢻࣜࣝࡀᅇ㌿᪉ྥࡢ఩┦㐜ࢀࢆ⏕ࡌ㸪ࣛ࢖ࣇࣜࣥࢢࡀⓎ⏕ࡍࡿࡶࡢ࡜⪃࠼࡚࠸ࡿ㸬ᮏ◊✲࡛ࡣ㸪ࣛ࢖ࣇࣜࣥࢢࢆᢚไࡍࡿࢻࣜࣝ㛤Ⓨࢆ┠ⓗ࡟㸪୍⯡ⓗ࡞ᕷ㈍ࢻࣜࣝࢆ෌◊☻ࡍࡿࡇ࡜࡛ᵝࠎ࡞ࢻࣜࣝᙧ≧ࢆసᡂࡋ㸪ࡑࢀࡽࡢࢻ࡛ࣜࣝຍᕤᐇ㦂ࢆ⾜ࡗࡓ㸬1.

ᐇ㦂᪉ἲ⾲1࡟♧ࡍษ๐᮲௳࡛⾲2࡟♧ࡍࢻࣜࣝ࡜⿕๐ᮦ࡟ࡼࡾ✰ຍᕤᐇ㦂ࢆ⾜ࡗࡓ㸬࡞࠾㸪✰῝ࡉࡣ70mm㸦L/D=100㸧࡜ࡋ㸪Ỉ㐨Ỉࢆ⁲ୗࡋ࡞ࡀࡽ࣐ࢩࢽࣥࢢࢭࣥࢱ࣮㸦Ᏻ⏣ᕤᴗओ〇㸸
YBM640V㸧ࢆ౑ࡗ࡚ຍᕤᐇ㦂ࢆ⾜ࡗࡓ㸬ࣛ࢖ࣇࣜࣥࢢࡢ᭷↓2.

ࡣຍᕤ⌧㇟ࢆ㧗㏿ᗘ࣓࢝ࣛࡸ CCD ࣓࡛࢝ࣛ᧜ᙳࡋ㸪┠ど࡟ࡼࡾ☜ㄆࡋࡓ㸬
3. 䝷䜲䝣䝸䞁䜾ᢚไᕤල
3.1㻌 䝗䝸䝹ᙧ≧ᶞ⬡ᮦᩱ࡟࠾ࡅࡿࣛ࢖ࣇࣜࣥࢢࡢⓎ⏕ࡣ㸪ⴭ⪅ࡽࡢሗ࿌ 4)࠿ࡽ✺Ⓨⓗ࡞ࢺࣝࢡୖ᪼࡟ࡼࡿࡶࡢ࡛࠶ࡾ㸪ࡑࡢⓎ⏕⟠ᡤࡣࢻࣜࣝඛ➃ࢆ㉳Ⅼ࡟Ⓨ⏕ࡍࡿࡇ࡜ࡀ CCD ࣓࢝ࣛࢆ౑ࡗࡓほᐹ࠿ࡽࢃ࠿ࡗ࡚࠸ࡿ㸬ࡑࡇ࡛㸪✺Ⓨⓗ࡞ࢺࣝࢡୖ᪼ࢆᢚไࡍࡿࡇ࡜ࢆ┠ⓗ࡟㸪⾲ 2 ࡛♧ࡋࡓㅖඖࡢࢻࣜࣝ㸦ᅗ 2 ཧ↷㸧ࢆ࣮࣋ࢫ࡟ඛ➃ࡢࡳᙧ≧ࢆኚ᭦ࡋࡓ㸬࡞࠾㸪✺Ⓨⓗ࡞ࢺࣝࢡୖ᪼ࡣ㸪ษࡾᒌࡸ⿕๐ᮦࡀࢻࣜࣝࢩࣙࣝࢲ࣮㒊࡟㣗࠸㎸ࢇࡔࡾ㸪ᘬࡗ࠿࠿ࡗࡓࡾࡍࡿࡶࡢ࡜᥎ ࡋ㸪ษ๐ࢩ࣑࣮ࣗࣞࢩࣙࣥࢯ
ࣇࢺ㸦Advantedge FEM 3D㸧࡟ࡼࡾᵝࠎ࡞ࢻࣜࣝᙧ≧ࢆ᳨ドࡋࡓ㸬ࡑࡢ⤖ᯝ㸪ࢩࣙࣝࢲ࣮㒊ࡢᛂຊศᕸ࡟ᛴ⃭࡞ኚືࡀ࡞࠸ᙧ≧࡜ࡋ࡚ࢩࣙࣝࢲ࣮㒊࡟୸ࡳࢆᖏࡧࡓᙧ≧࡜ࡋࡓ㸬ᐇ㦂࡟⏝࠸ࡓᕤලࡣ 4 ✀㢮࡜ࡋ㸪ᅗ 2 ࡛♧ࡋࡓࢻࣜࣝ㸦௨ୗ㸪Type A㸧㸪ඛ➃ࢆ࣮࢚࣎ࣝࣥࢻ࣑ࣝᙧ≧࡜ࡋࡓࢻࣜࣝ㸦௨ୗ㸪Type B㸧㸪ࢩࣙࢵࢺࣈࣛࢫࢺࢆ࠿ࡅࡿࡇ࡜࡛඲యⓗ࡟୸ࡳࢆᖏࡧࡉࡏࡓࢻࣜࣝ㸦Type C㸧㸪ࢩࣙࣝࢲ࣮㒊࡟୸ࡳࢆᖏࡧࡉ
ࡏࡓࢻࣜࣝ㸦Type D㸧࡜ࡋࡓ㸬
3.2㻌 ᥦ᱌䝗䝸䝹䛻䜘䜛ຍᕤᚋ䛾✰ቨ㠃≧ែ
ᅗ 3(a)㹼(d)࡟ 4 ✀㢮ࡢࢻ࡛ࣜࣝ࠶ࡅࡓ✰ቨ㠃≧ែࢆ♧ࡍ㸬ᅗࡼࡾ㸪Type A ࡢࢻ࡛ࣜࣝ࠶ࡅࡓ✰௨እࡣࣛ࢖ࣇࣜࣥࢢࡢⓎ⏕ࡣ☜ㄆࡉࢀ࡞࠿ࡗࡓ㸬ࡲࡓ㸪✰ᗏ㠃࡟ࡣࢻࣜࣝඛ➃ᙧ≧ࡀࡑࢀࡒࢀ㌿෗ࡉࢀ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬⾲ 2㻌 ⿕๐ᮦ䛸䝗䝸䝹䛾ㅖඖ⿕๐ᮦ

㏱᫂䜰䜽䝸䝹ᶞ⬡ඛ➃ゅ 120°䠈ⰺཌ 0.3mm

䝗䝸䝹ຍᕤ᪉ྥ㻌䝗䝸䝹

㏨䛢ゅ 12㼻䠈䛽䛨䜜ゅ 30°

ᙧ≧ล㛗 15mm䠈ᕤල㛗 100mm
ᕤලᚄ 0.7mm

ᮦ㉁

㉸◳ྜ㔠

0.7mm

0.7mm

(a) ✰ୖ㒊㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 㻌 (b) ✰ᗏ㒊ᅗ 1㻌 ✰ຍᕤᚋ䛾✰ቨ㠃≧ែ⾲ 1㻌 ษ๐᮲௳ᅇ㌿ᩘ

2500min-1㏦䜚㏿ᗘ

5mm/min

䝇䝔䝑䝥㔞

0.1mm

ษ๐㞺ᅖẼỈ㐨Ỉ⁲ୗᖺᗘ⢭ᐦᕤᏛ఍᫓Ꮨ኱఍Ꮫ⾡ㅮ₇఍ㅮ₇ㄽᩥ㞟

0.15mmᅗ 2㻌 䝗䝸䝹ඛ➃ᙧ≧− 53 −
䋭 㪉㪈㪐 䋭53

Copyright Ⓒ 2016 JSPE㪛㪈㪋(a) Type A
1.0mm

1.0mm

㻌 㻌 (b) Type B(a) Type A(b) Type B

1.0mm

1.0mm

(c) Type C(c) Type C㻌ᅗ 5㻌 ษ䜚ᒌ(d) Type Dࢻࣜࣝຍᕤ᪉ྥ

(d) Type Dᅗ 3㻌 ྛ䝗䝸䝹䛷䛒䛡䛯✰ቨ㠃≧ែࢩࣕࣥࢡ㒊⁁㒊ᅗ 6 ษࡾᒌワࡾ࡟ࡼࡾᢡᦆࡋࡓࢻࣜࣝ

(a) Type A(b) Type B(c) Type C(d) Type Dᅗ 4㻌 㧗㏿ᗘ䜹䝯䝷䛷᧜ᙳ䛧䛯▐㛫⏬ീ

3.3㻌 ᥦ᱌䝗䝸䝹䛻䜘䜛ຍᕤ⌧㇟ᅗ 4(a)㹼(d)࡟ࢻࣜࣝࡢຍᕤ⌧㇟ࢆ㧗㏿ᗘ࣓࡛࢝ࣛほᐹࡋࡓ⤖ᯝࢆ♧ࡍ㸬ᅗ 4(a)(b)ࡢษࢀลࡀ᥋ゐࡍࡿษ๐㠃ࡣ㏱࡛᫂࠶
ࡾⰋዲ࡞ษ๐ࡀ⾜ࢃࢀ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡑࢀ࡟ᑐࡋ㸪ᅗ
4(c)ࡣษ๐㠃඲యࡀⓑ⃮ࡋ࡚࠸ࡿ㸬ࡇࢀࡣ㸪ษࢀล඲యࡀ୸ࡳࢆᖏࡧࡓࡇ࡜࡟ࡼࡾ㸪ࡍࡃ࠸ゅࡀ㕌ゅ࡟࡞ࡗࡓࡓࡵ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪ᅗ 4(d)࡟♧ࡍࢩࣙࣝࢲ࣮㒊ࡢࡳ୸ࡳࢆᖏࡧࡓࢻࣜ
࡛ࣝࡣ㸪୸ࡳࢆᖏࡧࡓಶᡤࡢࡳⓑ⃮ࡋ࡚࠾ࡾ㸪ࡑࢀ௨እࡣ TypeA ྠᵝⰋዲ࡞ษ๐㠃࡛࠶ࡿ㸬
3.4㻌 ษ䜚ᒌ≧ែ
ᅗ 5(a)㹼(d)࡟ࡑࢀࡒࢀࡢࢻ࡛ࣜࣝຍᕤࡋࡓ㝿࡟Ⓨ⏕ࡋࡓษࡾࡃࡎࢆ♧ࡍ㸬ᅗ 5(a)ࡢษࡾࡃࡎࡣᖏ≧ࡢⰋዲ࡞ษࡾࡃࡎࡀ☜ㄆ࡛ࡁ㸪ษ๐ࡀⰋዲ࡟⾜࠼࡚࠸ࡿࡇ࡜ࡀఛ࠼ࡿ㸬ࡑࢀ࡟ᑐࡋ㸪ᅗ 5(c)ࡢ඲ษࢀล࡟୸ࡳࢆᖏࡧࡉࡏࡓࢻࣜࣝࡣ㸪᫂ࡽ࠿࡟ษࡾ
ࡃࡎワࡾࡀⓎ⏕ࡋ㸪⇕࡟ࡼࡾᅛࡲࡗࡓࡼ࠺࡞ษࡾࡃࡎࡀ☜ㄆࡉࢀ㸪ᅗ 4(c)ࡢຍᕤ㠃≧ែ࠿ࡽࡶ᥎ ࡛ࡁࡿ㸬ᅗ 5(b)(d)ࡢࢻ
ࣜࣝ࡟࠾࠸࡚ࡣ㸪Ⰻዲ࡞ษࡾࡃࡎࡶ☜ㄆ࡛ࡁࡿࡀ୰࡟ࡣワࡲࡗ࡚ᅛࡲࡗࡓࡼ࠺࡞ษࡾࡃࡎࡶ☜ㄆࡉࢀࡓ㸬ᅗ 6 ࡟ Type C ࡢࢻ࡛ࣜࣝຍᕤࡋࡓ㝿࡟ษࡾᒌワࡾ࡟ࡼࡾᢡ
ᦆࡋࡓ஦౛ࢆ♧ࡍ㸬ᅗࡼࡾ㸪⁁㒊࡟ⓑ࠸ษࡾᒌࡀࡓࡲࡗ࡚࠾
ࡾ⁁㒊࠿ࡽࢩࣕࣥࢡ㒊࡟⧅ࡀࡿ㒊ศ࠿ࡽ✰ቨ㠃࡟ட⿣ࡀධࡗ࡚࠸ࡿ㸬ࡇࡢࡇ࡜࠿ࡽᅗ 5(c)࡛♧ࡍࡼ࠺࡞ษࡾᒌࡀ᤼ฟ୙Ⰻ࡜࡞ࡾᢡᦆࡋࡓ࡜⪃࠼ࡽࢀࡿ㸬⪃ᐹ
ୖ㏙ࡋࡓヨ㦂⤖ᯝ࠿ࡽ㸪ࢩࣙࣝࢲ࣮㒊࡟୸ࡳࢆᣢࡓࡏࡿࡇ࡜࡛ࣛ࢖ࣇࣜࣥࢢࢆᢚไ࡛ࡁࡿࡇ࡜ࡣ☜ㄆ࡛ࡁࡓ㸬ࡇࢀࡣ㸪ࢻࣜࣝຍᕤ୰࡟᭱ࡶࢺࣝࢡ࡟ᙳ㡪ࢆཬࡰࡍ᭱እ࿘㒊ศࡢษࢀ4.

ᖺᗘ⢭ᐦᕤᏛ఍᫓Ꮨ኱఍Ꮫ⾡ㅮ₇఍ㅮ₇ㄽᩥ㞟ลࡀ୸ࡳࢆᖏࡧࡓࡇ࡜࡛✺Ⓨⓗ࡞㣗࠸㎸ࡳࡸษࡾࡃࡎࡢᕳࡁ㎸ࡳࡀ㍍ῶ࡛ࡁࡓࡓࡵ࡜᥎ ࡛ࡁࡿ㸬ࡓࡔࡋ㸪ᮏ◊✲࡛ᥦ᱌ࡋࡓࢻ࡛ࣜࣝࡣ㸪ᅗ 2 ࡛♧ࡋࡓᕷ㈍ࢻࣜࣝࡼࡾࡶษࡾࡃࡎワࡾࡀⓎ⏕ࡋࡸࡍࡃ㸪᤼ฟ୙Ⰻ࡟ࡼࡿࢻࣜࣝᢡᦆࡀㄢ㢟࡛࠶ࡿࡇ࡜ࡀࢃ࠿ࡗࡓ㸬ᑠᚄࣟࣥࢢࢻࣜࣝࡢሙྜ㸪࢚࢔࣮ࣈ࣮ࣟ࡟ࡼࡾᙉไⓗ࡟ษࡾࡃࡎࢆ㝖ཤࡋࡼ࠺࡜ࡍࡿ࡜㸪ࢻࣜࣝࡀ኱ࡁࡃ᣺ືࡋຍᕤᣲື࡟ᙳ㡪ࢆཬࡰࡍࡓࡵ㸪ษࡾࡃࡎ᤼ฟᛶࢆࡉࡽ࡟ྥୖࡉࡏࡿࡇ࡜ࡀ௒ᚋࡢㄢ㢟࡛࠶ࡿ㸬5. ⤖ゝ ᮏ◊✲࡛ࡣ㸪ᶞ⬡ຍᕤ᫬࡟Ⓨ⏕ࡍࡿࣛ࢖ࣇࣜࣥࢢࢆᢚไࡉࡏࡿࡓࡵ㸪ࢻࣜࣝඛ➃ᙧ≧ࢆᨵⰋࡍࡿ᪉ἲࢆヨࡳࡓ㸬ࡑࡢ⤖ᯝ㸪௨ୗࡢ⤖ㄽࢆᚓࡓ㸬1) ࣛ࢖ࣇࣜࣥࢢࡢⓎ⏕ࡣ㸪ࢻࣜࣝࢩࣙࣝࢲ࣮㒊ࡢᙧ≧࡟୸ࡳࢆᖏࡧࡉࡏࡿࡇ࡜࡛ᢚไ࡛ࡁࡿ㸬2) ࢻࣜࣝࢩࣙࣝࢲ࣮㒊࡟୸ࡳࢆᖏࡧࡉࡏࡿ࡜ษࡾᒌ᤼ฟ୙Ⰻࡀㄢ㢟࡜࡞ࡿ㸬ཧ⪃ᩥ⊩1)∧,110, (2000)2)㨣㠡ᏹ⊱㸪బஂ㛫ᩗ୕㸪ᯇᓮᩄᙪ㸪⏥ᮌ᫛㞝㸸ࢻࣜࣝࡢ᣺ືࡢゎᯒ̺ୗ✰ࡢ࠶ࡿሙྜ,⢭ᐦᕤᏛ఍ㄅ,52,4(1986)
661.

3)

K. Matsuzaki, T Ryu, A Sueoka, K Tsukamoto: Theoretical andexperimental study on rifling mark generating phenomena in
BTA deep hole drilling process (generating mechanism andcountermeasure) ,88, (2015) 194.

4)

− 54 −䋭 㪉㪉㪇 䋭54⩝Ⓩⱱ஧㸸ᶵᲔຍᕤࡢ࣏࣡ࣥ࢖ࣥࢺࣞࢵࢫࣥ ,኱Ἑฟబ⸨ᓫᘯ㸪㛗㇂ᕝఙ୍㸪୰ᮧㄔ㸸ᶞ⬡ᮦᩱ࡟࠾ࡅࡿᑠᚄ῝✰ຍᕤ᫬ࡢࣛ࢖ࣇࣜࣥࢢⓎ⏕࣓࢝ࢽࢬ࣒ࡢゎ᫂,2015ᖺ⢭ᐦᕤᏛ఍Ꮫ⾡ㅮ₇఍⛅Ꮨ኱఍, (2015)287.