CN201744713U - Telescopic drill bit - Google Patents
Telescopic drill bit Download PDFInfo
- Publication number
- CN201744713U CN201744713U CN2010201920200U CN201020192020U CN201744713U CN 201744713 U CN201744713 U CN 201744713U CN 2010201920200 U CN2010201920200 U CN 2010201920200U CN 201020192020 U CN201020192020 U CN 201020192020U CN 201744713 U CN201744713 U CN 201744713U
- Authority
- CN
- China
- Prior art keywords
- rod
- cutter
- pull bar
- drill bit
- drill
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a telescopic drill bit with an adjustable drill bit diameter and an adjustable drill hole depth. The telescopic drill bit comprises a drill rod, V-shaped brackets, a curve cutter, a pull rod, a movable shaft, a rotary rod and a telescopic rod and is characterized in that: the curve cutter is arranged between two groups of V-shaped brackets; a cutter groove is formed at a contraction position which is on the head part of the drill rod and corresponds to the curve cutter; the tip of each bracket is connected with the movable shaft and a fixed shaft respectively; the movable shaft is connected with the pull rod in a sliding cavity of the drill rod; the other end of the pull rod is connected with the telescopic rod; and an L-shaped rotary rod is connected crosswise with the pull rod on one end part. The telescopic drill bit has simple structure, increases the operation functions of a cutter, has high stability and is rapid and efficient to process; and the drill bit diameter and the drill hole depth can be adjusted at any time as required.
Description
Technical field
The utility model relates to the adjustable expansion bit of a kind of external diameter.
Background technology
Existing bit drills cutter is fixed, the outside diameter size is certain, and engineering the drilling also requires drill bit can reach flexible adjustable at present, promptly regulate bit diameter and drilling depth as required at any time, to increase drill bit tool function and stability, the existing fixed drill bit then can't be realized this requirement.
Summary of the invention
The purpose of this utility model be to design a kind of simple in structure, tool function increases, stability high, the expansion bit of processing quickness and high efficiency, can regulate bit diameter and drilling depth as required at any time.
Technical scheme provided by the utility model for achieving the above object is: a kind of expansion bit, comprise drilling rod, V-type support, curve cutter, pull bar, movable axis, swing arm and expansion link, it is characterized in that between two groups of V-type supports the curve cutter being housed, drilling rod head and be provided with the cutter groove corresponding to the contraction position of curve cutter, top place is connected with movable axis and dead axle respectively at support, movable axis is connected with pull bar in being located at the sliding chamber of drilling rod, be connected with expansion link at the pull bar other end, L type swing arm is connected with the end portions cross of pull bar at pull bar.
Described pull bar single face shaft has helicla flute, the threaded engagement of this helicla flute and the vertical shaft of L type swing arm.
The utlity model has simple in structure, increased cutter operation function, high, the processing quickness and high efficiency of stability, can regulate advantages such as bit diameter and drilling depth as required at any time.
Description of drawings
Accompanying drawing is a sectional structure schematic diagram of the present utility model.
The specific embodiment
Referring to accompanying drawing, the utility model mainly is made up of drilling rod 6, V-type support 1, curve cutter 4, pull bar 8, movable axis 5, swing arm 7 and expansion link 13, between two groups of V-type supports 1 curve cutter 4 is housed, be provided with the cutter groove 11 of shrinkage curve cutter at drilling rod 6 heads and corresponding to the contraction position of curve cutter 4, curve cutter and shrink cutter groove 11 and can be designed to two groups or four groups; V-type support 1 summit that is positioned at drill bit 2 tail ends connects dead axle 3, and the top place of support connects movable axis 5 relatively, and movable axis 5 pull bar 8 interior with being located at sliding chambeies of drilling rod 6 10 is connected; Be connected with projection 9 at pull bar 8 tail ends, this projection 9 is connected with the groove 12 of expansion link 13 end faces, to regulate bit depth; L type swing arm 7 is connected with the end portions cross of pull bar 8 at pull bar, and the single face shaft of pull bar 8 has helicla flute, the whole threaded engagement of this helicla flute and L type swing arm 7 vertical shafts.When rotating counterclockwise swing arm 7, swing arm drives pull bar and the V-type support shrinks drill bit, clockwise rotates swing arm drill bit is opened.
Claims (2)
1. expansion bit, comprise drilling rod, V-type support, curve cutter, pull bar, movable axis, swing arm and expansion link, it is characterized in that between two groups of V-type supports the curve cutter being housed, drilling rod head and be provided with the cutter groove corresponding to the contraction position of curve cutter, top place is connected with movable axis and dead axle respectively at support, movable axis is connected with pull bar in being located at the sliding chamber of drilling rod, is connected with expansion link at the pull bar other end, and L type swing arm is connected with the end portions cross of pull bar at pull bar.
2. expansion bit according to claim 1 is characterized in that described pull bar single face shaft has helicla flute, the threaded engagement of this helicla flute and the vertical shaft of L type swing arm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201920200U CN201744713U (en) | 2010-05-11 | 2010-05-11 | Telescopic drill bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201920200U CN201744713U (en) | 2010-05-11 | 2010-05-11 | Telescopic drill bit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201744713U true CN201744713U (en) | 2011-02-16 |
Family
ID=43579383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010201920200U Expired - Fee Related CN201744713U (en) | 2010-05-11 | 2010-05-11 | Telescopic drill bit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201744713U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110695410A (en) * | 2019-09-30 | 2020-01-17 | 达英科(南京)设备有限公司 | Diameter-variable hand-held electric drill |
-
2010
- 2010-05-11 CN CN2010201920200U patent/CN201744713U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110695410A (en) * | 2019-09-30 | 2020-01-17 | 达英科(南京)设备有限公司 | Diameter-variable hand-held electric drill |
CN110695410B (en) * | 2019-09-30 | 2020-12-08 | 武义锐鹰工具制造有限公司 | Diameter-variable hand-held electric drill |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102691326B (en) | Multi-bit drill corrector | |
CN204584809U (en) | A kind ofly clamp assembly for drilling machine | |
CN105414603A (en) | Aluminum strip drilling device for hollow glass molecular sieve filling machine | |
CN201744713U (en) | Telescopic drill bit | |
CN201922138U (en) | Cutter for processing inner thread of deep hole | |
CN201857908U (en) | Pneumatic slip for drilling machine of inclined shaft | |
CN201320643Y (en) | Internal and external circles chamfering machine | |
CN202517090U (en) | Novel multi-drill | |
CN204064710U (en) | Many diameter drill bits rock core machine for placing | |
CN202689930U (en) | Drill-close full-rotating vertically drilling tool | |
CN202466999U (en) | Reinforcing steel bar mechanical connecting device | |
CN103506651A (en) | Drilling machine | |
CN204171393U (en) | A kind of metal connection end of body drilling equipment of binding post | |
CN204277471U (en) | Rotary casing operating mechanism | |
CN203292920U (en) | Pneumatic type hole drilling tapping power head | |
CN203495286U (en) | Power head | |
CN204152456U (en) | Machine locking-type locking bar pressurizing block device | |
CN103495761A (en) | Power head | |
CN201669453U (en) | Flat head chamfering device for steel tube | |
CN203109267U (en) | Shaft sleeve type deep-hole cutter | |
CN203936430U (en) | A kind of adjustable subland drill | |
CN203394384U (en) | Embedded slip structure of drilling machine chuck | |
CN203316771U (en) | Drilling device for inner wall of workpiece | |
CN203881565U (en) | Quick-coring bit for core block of inorganic outer-wall heat-preservation layer | |
CN204621134U (en) | A kind of have the drilling machine clamping assembly |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20120511 |