JPH0463205U - - Google Patents

Info

Publication number
JPH0463205U
JPH0463205U JP10548590U JP10548590U JPH0463205U JP H0463205 U JPH0463205 U JP H0463205U JP 10548590 U JP10548590 U JP 10548590U JP 10548590 U JP10548590 U JP 10548590U JP H0463205 U JPH0463205 U JP H0463205U
Authority
JP
Japan
Prior art keywords
drill
center
drill bit
cutting
edge
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
JP10548590U
Other languages
Japanese (ja)
Other versions
JPH0727127Y2 (en
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 filed Critical
Priority to JP1990105485U priority Critical patent/JPH0727127Y2/en
Publication of JPH0463205U publication Critical patent/JPH0463205U/ja
Application granted granted Critical
Publication of JPH0727127Y2 publication Critical patent/JPH0727127Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の錐刃体をセンタードリルに
取着した状態の全体正面図、第２図は錐刃体の正
面図、第３図は同側面図、第４図は従来の錐刃体
をセンタードリルに取着した状態の全体正面図で
ある。 １……錐刃体、２……切屑排出溝、３……切刃
、４……ドリル挿通孔、５……センタードリル、
６……止ねじ、７……錐刃体、８……削除部、９
……削面。 Figure 1 is an overall front view of the drill bit of this invention attached to a center drill, Figure 2 is a front view of the drill bit, Figure 3 is a side view of the same, and Figure 4 is a conventional drill bit. FIG. 3 is an overall front view of the body attached to the center drill. 1... Conical blade body, 2... Chip discharge groove, 3... Cutting blade, 4... Drill insertion hole, 5... Center drill,
6... Set screw, 7... Tapered blade, 8... Deletion part, 9
...Shaved surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] センタードリルを中心孔に挿通してセンタード
リル上に位置変更可能に取着される二段穿穴用錐
刃において、錐刃体を基部を残して片側を先端に
掛けて削除し、該削除部で中心孔残留部両側に形
成された削面の片方を下方に延長して削面縁に切
刃を形成したことを特徴とする二段穿穴用錐刃。 In a drill bit for two-step drilling, which is attached to the center drill so that the center drill can be changed in position by inserting the center drill into the center hole, the drill bit is removed by leaving the base and hooking one side to the tip, and removing the cut part. A drill bit for two-stage drilling, characterized in that one of the cutting surfaces formed on both sides of the center hole remaining portion is extended downward to form a cutting edge at the edge of the cutting surface.
JP1990105485U 1990-10-05 1990-10-05 Double-step drilling conical blade Expired - Lifetime JPH0727127Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990105485U JPH0727127Y2 (en) 1990-10-05 1990-10-05 Double-step drilling conical blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990105485U JPH0727127Y2 (en) 1990-10-05 1990-10-05 Double-step drilling conical blade

Publications (2)

Publication Number Publication Date
JPH0463205U true JPH0463205U (en) 1992-05-29
JPH0727127Y2 JPH0727127Y2 (en) 1995-06-21

Family

ID=31851185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990105485U Expired - Lifetime JPH0727127Y2 (en) 1990-10-05 1990-10-05 Double-step drilling conical blade

Country Status (1)

Country Link
JP (1) JPH0727127Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4420795Y1 (en) * 1965-09-15 1969-09-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4420795Y1 (en) * 1965-09-15 1969-09-04

Also Published As

Publication number Publication date
JPH0727127Y2 (en) 1995-06-21

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term