JPS60172408A - アンダ−カツト穿孔用打撃穿孔装置 - Google Patents

アンダ−カツト穿孔用打撃穿孔装置

Info

Publication number
JPS60172408A
JPS60172408A JP2918584A JP2918584A JPS60172408A JP S60172408 A JPS60172408 A JP S60172408A JP 2918584 A JP2918584 A JP 2918584A JP 2918584 A JP2918584 A JP 2918584A JP S60172408 A JPS60172408 A JP S60172408A
Authority
JP
Japan
Prior art keywords
blade
sub
borer
rotation control
hole
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.)
Granted
Application number
JP2918584A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0129646B2 (enrdf_load_stackoverflow
Inventor
Masaaki Miyanaga
昌明 宮永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miyanaga KK
Original Assignee
Miyanaga KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miyanaga KK filed Critical Miyanaga KK
Priority to JP2918584A priority Critical patent/JPS60172408A/ja
Publication of JPS60172408A publication Critical patent/JPS60172408A/ja
Publication of JPH0129646B2 publication Critical patent/JPH0129646B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
JP2918584A 1984-02-17 1984-02-17 アンダ−カツト穿孔用打撃穿孔装置 Granted JPS60172408A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2918584A JPS60172408A (ja) 1984-02-17 1984-02-17 アンダ−カツト穿孔用打撃穿孔装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2918584A JPS60172408A (ja) 1984-02-17 1984-02-17 アンダ−カツト穿孔用打撃穿孔装置

Publications (2)

Publication Number Publication Date
JPS60172408A true JPS60172408A (ja) 1985-09-05
JPH0129646B2 JPH0129646B2 (enrdf_load_stackoverflow) 1989-06-13

Family

ID=12269146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2918584A Granted JPS60172408A (ja) 1984-02-17 1984-02-17 アンダ−カツト穿孔用打撃穿孔装置

Country Status (1)

Country Link
JP (1) JPS60172408A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2862807B2 (ja) * 1995-02-28 1999-03-03 株式会社ミヤナガ アンダーカット部付き孔の穿孔装置

Also Published As

Publication number Publication date
JPH0129646B2 (enrdf_load_stackoverflow) 1989-06-13

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term