CN107876834B - A kind of high stability hand held electric drill being easily changed drill bit - Google Patents
A kind of high stability hand held electric drill being easily changed drill bit Download PDFInfo
- Publication number
- CN107876834B CN107876834B CN201711069438.5A CN201711069438A CN107876834B CN 107876834 B CN107876834 B CN 107876834B CN 201711069438 A CN201711069438 A CN 201711069438A CN 107876834 B CN107876834 B CN 107876834B
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- drill bit
- clamping
- inner sleeve
- outside
- high stability
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of high stability hand held electric drill for being easily changed drill bit, including collet, fuselage and drill bit, collet includes securing device, locked instrument and attachment device；Securing device includes the support set being sequentially sleeved at outside drill bit from inside to outside, first bearing and shell；Clamping device includes clamping head, second bearing, pushing sleeve, guide rod, locker plate, cylinder and the piston being arranged in cylinder；Attachment device includes connecting cylinder.Compared with prior art, the beneficial effects of the present invention are: on front side of the rear end that can effectively consolidate drill bit by securing device, by adjusting top cover, enable inner sleeve and housing opposite or counter motion, when realization moves toward one another, inner sleeve can inwardly shrink clamping drill bit, to play firm effect, and when counter motion, inner sleeve can unclamp drill bit, replacement easy to disassemble；Using locked instrument, clamping lobe can shrink clamping drill bit radially inward on the inside of locker plate under the action of the conical surface, convenient to replace to drill bit installation and removal.
Description
Technical field
The present invention relates to power tools technology field more particularly to a kind of high stability hand-held electricity for being easily changed drill bit
It bores.
Background technique
Electric drill working principle is that the rotor of electromagnetic rotation or electromagnetic reciprocating small capacity motor does magnetic field intercepts
Acting operating drives apparatus for work by transmission mechanism, the power of drill bit is increased with moving gear, to make drill bit scrapings body surface
Object is preferably pierced in face.Electric drill can be divided into 3 classes: electric hand drill, impact drill, hammer drill.1. electric hand drill: power is minimum, use scope
It is only limitted to bore wood and when electric screwdriver is used, part electric hand drill can be changed to specialist tools depending on the application, and purposes and model are more；
2. impact drill: the beater mechanism of electric impact drill has dog and two kinds of ball-type；3. hammer drill (electric hammer): can be in a variety of hard materials
Upper drill hole, use scope are most wide.This 3 kinds of electric drill prices arrange from low to high, and function also increases therewith, select and need to combine respectively
The scope of application and requirement.
Currently, existing electric drill after replacing drill bit, if drill bit is not mounted to position, is easy to happen inclination, causes to bore
It is broken during hole, in addition, existing electric drill more bit change mode is single, replaces low efficiency, and replace quality and be difficult to protect
Card.
Summary of the invention
To solve the above problems, the invention discloses a kind of high stability hand held electric drills for being easily changed drill bit.
In order to reach the goals above, the invention provides the following technical scheme:
A kind of high stability hand held electric drill being easily changed drill bit, including collet, fuselage and drill bit, it is characterised in that:
The collet includes securing device, locked instrument and attachment device；The securing device includes being sequentially sleeved at brill from inside to outside
Support set, first bearing and shell outside head, the support set includes the inner sleeve being arranged inside and outside and housing, and the inner sleeve band is tapered,
And inner sleeve top outer is arranged with adjusting top cover, the housing is adapted with the conical surface on the outside of inner sleeve, and is pushed up on the outside of upper section with adjusting
Lid is threadedly coupled, and the inner ring of the first bearing is fixedly connected with housing, and outer ring is fixedly connected with shell, the housing and shell
Rotation connection, the outer casing bottom are equipped with annular protrusion；The locked instrument includes clamping head, second bearing, pushing sleeve, guiding
Bar, locker plate, cylinder and the piston being arranged in cylinder, the clamping head include rotate bucket and be connected to rotation bucket top by
The clamping section that at least two clamping lobes are constituted, the rotation bucket is cylindrical, and inside is adapted with drill bit, and bottom is driven by fuselage
Dynamic, the clamping lobe is evenly arranged in the circumferential direction on rotation bucket top, and each clamping lobe can be elastically deformed in the radial direction, and interior
Side is for clamping drill bit, and outside is the conical surface, through-hole compatible with rotation bucket is equipped in the pushing sleeve, and rotatably support
In piston, the locker plate is equipped with internal taper hole compatible with the male cone (strobilus masculinus) of clamping section, and is slidably disposed in cylinder
In inner cavity, the rotation bucket of the clamping head is connected in the through-hole of pushing sleeve, and clamping section is placed in the internal taper hole of locker plate, described to lead
To bar at least there are two, be evenly arranged at the top of pushing sleeve, one end of the guide rod connect with locker plate, the other end and pushing sleeve bottom company
It connects；The attachment device includes connecting cylinder, and the top inner side of the connecting cylinder and the annular protrusion outside screw of outer casing bottom connect
It connects, is connect on the inside of bottom end with cylinder top outside screw.
Further, the taper of the inner sleeve is 1:15.
Further, the inner sleeve is resilient sleeve.
Further, the first bearing is double row tapered roller bearing.
Further, dustband is respectively equipped between the housing both ends and shell.
Further, the first anti-slip layer is equipped on the inside of the clamping lobe.
Further, the second anti-slip layer is equipped on the inside of the inner sleeve.
Further, it is equipped with the first external screw thread on the outside of the housing upper section, is equipped with first on the inside of the adjusting top cover lower section
Internal screw thread, first external screw thread are adapted with the first internal screw thread.
Compared with prior art, the beneficial effects of the present invention are: the rear end of drill bit can be effectively consolidated by securing device
Front side enables inner sleeve and housing opposite or counter motion by adjusting top cover, real in conjunction with the inclined surface of inner sleeve and housing
When now moving toward one another, inner sleeve can inwardly shrink clamping drill bit, so that firm effect is played, and when counter motion, inner sleeve can unclamp
Drill bit, replacement easy to disassemble；The clamping lobe of clamping head can be pushed by cylinder by pushing sleeve using locked instrument, clamping lobe exists
Clamping drill bit can be shunk radially inward under the action of the conical surface on the inside of locker plate, and when reverse operating cylinder, clamping lobe is in elasticity
It restores to the original state under the action of power, unclamps drill bit, so that convenient replace drill bit installation and removal；It can will be consolidated by attachment device
Device is connected with locked instrument, and securing device and locked instrument is enabled to form entirety, improves whole collet to the lock of drill bit
Gu and the stabilization surname of work.
Detailed description of the invention
Fig. 1 is the structural representation after a kind of high stability hand held electric drill installation drill bit for being easily changed drill bit of the present invention
Figure.
Fig. 2 is the structural representation of securing device in a kind of high stability hand held electric drill for being easily changed drill bit of the present invention
Figure.
Fig. 3 is the structural representation of locked instrument in a kind of high stability hand held electric drill for being easily changed drill bit of the present invention
Figure.
Fig. 4 is the structural representation of attachment device in a kind of high stability hand held electric drill for being easily changed drill bit of the present invention
Figure.
Fig. 5 is the structural representation after a kind of each component combination of high stability hand held electric drill for being easily changed drill bit of the present invention
Figure.
Reference signs list:
1- collet, 2- fuselage, 3- drill bit, 4- support set, 41- inner sleeve, 42- housing, 43- adjust top cover, 5- first bearing, 6-
Shell, 7- annular protrusion, 8- clamping head, 81- rotate bucket, 82- clamping lobe, 9- second bearing, 10- pushing sleeve, 11- guide rod, 12-
Locker plate, 13- cylinder, 14- piston, 15- connecting cylinder, 16- dustband, the first anti-slip layer of 17-, the second anti-slip layer of 18-.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to direction or remote
Direction from geometric center of specific component.
Embodiment 1
A kind of high stability hand held electric drill being easily changed drill bit, including collet 1, fuselage 2 and drill bit 3, the collet 1
Including securing device, locked instrument and attachment device；The securing device includes the support being sequentially sleeved at outside drill bit 3 from inside to outside
Set 4, first bearing 5 and shell 6, the support set 4 include the inner sleeve 41 being arranged inside and outside and housing 42, and the inner sleeve 41 is with cone
Degree, and 41 top outer of inner sleeve is arranged with and adjusts top cover 43, the housing 42 is adapted with the 41 outside conical surface of inner sleeve, and outside upper section
Side is threadedly coupled with top cover 43 is adjusted, and the inner ring of the first bearing 5 is fixedly connected with housing 42, outer ring and the fixed company of shell 6
It connects, the housing 42 is rotatablely connected with shell 6, and 6 bottom of shell is equipped with annular protrusion 7；The locked instrument includes clamping
First 8, second bearing 9, pushing sleeve 10, guide rod 11, locker plate 12, cylinder 13 and the piston 14 being arranged in cylinder 13, the folder
Tight head 8 includes rotation bucket 81 and the clamping section being made of at least two clamping lobes 82 for being connected to rotation 81 top of bucket, the rotation
Turning barrel 81 is cylindrical, and inside is adapted with drill bit 3, and bottom is driven by fuselage 2, and the clamping lobe 82 is evenly arranged on rotation bucket 81
In the circumferential direction on top, each clamping lobe 82 can be elastically deformed in the radial direction, and inside is for clamping drill bit 3, outside
For the conical surface, the pushing sleeve 10 is interior to be equipped with through-hole compatible with rotation bucket 81, and is rotatably supported in piston 14, the lock
Clamping plate 12 is equipped with internal taper hole compatible with the male cone (strobilus masculinus) of clamping section, and is slidably disposed in 13 inner cavity of cylinder, described
The rotation bucket 81 of clamping head 8 is connected in the through-hole of pushing sleeve 10, and clamping section is placed in the internal taper hole of locker plate 12, the guide rod
11 at least there are two, be evenly arranged on the top of pushing sleeve 10, one end of the guide rod 11 is connect with locker plate 12, the other end and pushing sleeve 10
Bottom connection；The attachment device includes connecting cylinder 15, the top inner side of the connecting cylinder 15 and the annular protrusion of 6 bottom of shell
Outside screw connection, bottom end inside are threadedly coupled with 13 apical lateral of cylinder.
When work, the rear end front side of drill bit 3 can be effectively consolidated by securing device, top cover 43 is adjusted by rotation, so that
Inner sleeve 41 and housing 42 can opposite or counter motion realized when moving toward one another in conjunction with interior 41 sets and the inclined surface of housing 42, it is interior
Set 41, which can inwardly be shunk, clamps drill bit 3, so that firm effect is played, and when counter motion, inner sleeve 41 can unclamp drill bit 3, convenient
Dismounting and change；The clamping lobe 82 of clamping head 8 can be pushed by cylinder 13 by pushing sleeve 10 using locked instrument, clamping lobe 82 exists
It can be shunk radially inward under the action of the 12 inside conical surface of locker plate and clamp drill bit 3, and when reverse operating cylinder 13, clamping lobe 82
It restores to the original state under the action of elastic force, unclamps drill bit 3, so that convenient replace 3 installation and removal of drill bit；Pass through attachment device
Securing device can be connected with locked instrument, securing device and locked instrument is enabled to form entirety, improve whole collet pair
The stabilization surname of locking and the work of drill bit 3.
In the present embodiment, the taper of the inner sleeve 41 is 1:15, and inner sleeve 41 is resilient sleeve.
In the present embodiment, the first bearing 5 is double row tapered roller bearing.
In the present embodiment, it is respectively equipped with dustband 16 between 42 both ends of housing and shell 6, protection shell 6 can be played
Interior first bearing 5 not will receive dust intrusion, guarantee the stability and safety of work.
Embodiment 2
A kind of high stability hand held electric drill being easily changed drill bit, including collet 1, fuselage 2 and drill bit 3, the collet 1
Including securing device, locked instrument and attachment device；The securing device includes the support being sequentially sleeved at outside drill bit 3 from inside to outside
Set 4, first bearing 5 and shell 6, the support set 4 include the inner sleeve 41 being arranged inside and outside and housing 42, and the inner sleeve 41 is with cone
Degree, and 41 top outer of inner sleeve is arranged with and adjusts top cover 43, the housing 42 is adapted with the 41 outside conical surface of inner sleeve, and outside upper section
Side is threadedly coupled with top cover 43 is adjusted, and the inner ring of the first bearing 5 is fixedly connected with housing 42, outer ring and the fixed company of shell 6
It connects, the housing 42 is rotatablely connected with shell 6, and 6 bottom of shell is equipped with annular protrusion 7；The locked instrument includes clamping
First 8, second bearing 9, pushing sleeve 10, guide rod 11, locker plate 12, cylinder 13 and the piston 14 being arranged in cylinder 13, the folder
Tight head 8 includes rotation bucket 81 and the clamping section being made of at least two clamping lobes 82 for being connected to rotation 81 top of bucket, the rotation
Turning barrel 81 is cylindrical, and inside is adapted with drill bit 3, and bottom is driven by fuselage 2, and the clamping lobe 82 is evenly arranged on rotation bucket 81
In the circumferential direction on top, each clamping lobe 82 can be elastically deformed in the radial direction, and inside is for clamping drill bit 3, outside
For the conical surface, the pushing sleeve 10 is interior to be equipped with through-hole compatible with rotation bucket 81, and is rotatably supported in piston 14, the lock
Clamping plate 12 is equipped with internal taper hole compatible with the male cone (strobilus masculinus) of clamping section, and is slidably disposed in 13 inner cavity of cylinder, described
The rotation bucket 81 of clamping head 8 is connected in the through-hole of pushing sleeve 10, and clamping section is placed in the internal taper hole of locker plate 12, the guide rod
11 at least there are two, be evenly arranged on the top of pushing sleeve 10, one end of the guide rod 11 is connect with locker plate 12, the other end and pushing sleeve 10
Bottom connection；The attachment device includes connecting cylinder 15, the top inner side of the connecting cylinder 15 and the annular protrusion of 6 bottom of shell
Outside screw connection, bottom end inside are threadedly coupled with 13 apical lateral of cylinder.
When work, the rear end front side of drill bit 3 can be effectively consolidated by securing device, top cover 43 is adjusted by rotation, so that
Inner sleeve 41 and housing 42 can opposite or counter motion realized when moving toward one another in conjunction with interior 41 sets and the inclined surface of housing 42, it is interior
Set 41, which can inwardly be shunk, clamps drill bit 3, so that firm effect is played, and when counter motion, inner sleeve 41 can unclamp drill bit 3, convenient
Dismounting and change；The clamping lobe 82 of clamping head 8 can be pushed by cylinder 13 by pushing sleeve 10 using locked instrument, clamping lobe 82 exists
It can be shunk radially inward under the action of the 12 inside conical surface of locker plate and clamp drill bit 3, and when reverse operating cylinder 13, clamping lobe 82
It restores to the original state under the action of elastic force, unclamps drill bit 3, so that convenient replace 3 installation and removal of drill bit；Pass through attachment device
Securing device can be connected with locked instrument, securing device and locked instrument is enabled to form entirety, improve whole collet pair
The stabilization surname of locking and the work of drill bit 3.
In the present embodiment, the taper of the inner sleeve 41 is 1:15, and inner sleeve 41 is resilient sleeve.
In the present embodiment, the first bearing 5 is double row tapered roller bearing.
In the present embodiment, it is respectively equipped with dustband 16 between 42 both ends of housing and shell 6, protection shell 6 can be played
Interior first bearing 5 not will receive dust intrusion, guarantee the stability and safety of work.
In the present embodiment, it is equipped with the first anti-slip layer 17 on the inside of the clamping lobe 82, is equipped with second on the inside of the inner sleeve 41
Anti-slip layer 18 can be stablized and clamp drill bit 3, prevent drill bit 3 from shaking during rotation.
Embodiment 3
A kind of high stability hand held electric drill being easily changed drill bit, including collet 1, fuselage 2 and drill bit 3, the collet 1
Including securing device, locked instrument and attachment device；The securing device includes the support being sequentially sleeved at outside drill bit 3 from inside to outside
Set 4, first bearing 5 and shell 6, the support set 4 include the inner sleeve 41 being arranged inside and outside and housing 42, and the inner sleeve 41 is with cone
Degree, and 41 top outer of inner sleeve is arranged with and adjusts top cover 43, the housing 42 is adapted with the 41 outside conical surface of inner sleeve, and outside upper section
Side is threadedly coupled with top cover 43 is adjusted, and the inner ring of the first bearing 5 is fixedly connected with housing 42, outer ring and the fixed company of shell 6
It connects, the housing 42 is rotatablely connected with shell 6, and 6 bottom of shell is equipped with annular protrusion 7；The locked instrument includes clamping
First 8, second bearing 9, pushing sleeve 10, guide rod 11, locker plate 12, cylinder 13 and the piston 14 being arranged in cylinder 13, the folder
Tight head 8 includes rotation bucket 81 and the clamping section being made of at least two clamping lobes 82 for being connected to rotation 81 top of bucket, the rotation
Turning barrel 81 is cylindrical, and inside is adapted with drill bit 3, and bottom is driven by fuselage 2, and the clamping lobe 82 is evenly arranged on rotation bucket 81
In the circumferential direction on top, each clamping lobe 82 can be elastically deformed in the radial direction, and inside is for clamping drill bit 3, outside
For the conical surface, the pushing sleeve 10 is interior to be equipped with through-hole compatible with rotation bucket 81, and is rotatably supported in piston 14, the lock
Clamping plate 12 is equipped with internal taper hole compatible with the male cone (strobilus masculinus) of clamping section, and is slidably disposed in 13 inner cavity of cylinder, described
The rotation bucket 81 of clamping head 8 is connected in the through-hole of pushing sleeve 10, and clamping section is placed in the internal taper hole of locker plate 12, the guide rod
11 at least there are two, be evenly arranged on the top of pushing sleeve 10, one end of the guide rod 11 is connect with locker plate 12, the other end and pushing sleeve 10
Bottom connection；The attachment device includes connecting cylinder 15, the top inner side of the connecting cylinder 15 and the annular protrusion of 6 bottom of shell
Outside screw connection, bottom end inside are threadedly coupled with 13 apical lateral of cylinder.
When work, the rear end front side of drill bit 3 can be effectively consolidated by securing device, top cover 43 is adjusted by rotation, so that
Inner sleeve 41 and housing 42 can opposite or counter motion realized when moving toward one another in conjunction with interior 41 sets and the inclined surface of housing 42, it is interior
Set 41, which can inwardly be shunk, clamps drill bit 3, so that firm effect is played, and when counter motion, inner sleeve 41 can unclamp drill bit 3, convenient
Dismounting and change；The clamping lobe 82 of clamping head 8 can be pushed by cylinder 13 by pushing sleeve 10 using locked instrument, clamping lobe 82 exists
It can be shunk radially inward under the action of the 12 inside conical surface of locker plate and clamp drill bit 3, and when reverse operating cylinder 13, clamping lobe 82
It restores to the original state under the action of elastic force, unclamps drill bit 3, so that convenient replace 3 installation and removal of drill bit；Pass through attachment device
Securing device can be connected with locked instrument, securing device and locked instrument is enabled to form entirety, improve whole collet pair
The stabilization surname of locking and the work of drill bit 3.
In the present embodiment, the taper of the inner sleeve 41 is 1:15, and inner sleeve 41 is resilient sleeve.
In the present embodiment, the first bearing 5 is double row tapered roller bearing.
In the present embodiment, it is respectively equipped with dustband 16 between 42 both ends of housing and shell 6, protection shell 6 can be played
Interior first bearing 5 not will receive dust intrusion, guarantee the stability and safety of work.
In the present embodiment, it is equipped with the first anti-slip layer 17 on the inside of the clamping lobe 82, is equipped with second on the inside of the inner sleeve 41
Anti-slip layer 18 can be stablized and clamp drill bit 3, prevent drill bit 3 from shaking during rotation.
In the present embodiment, the first external screw thread, 43 lower section of the adjusting top cover inside are equipped on the outside of 42 upper section of housing
Equipped with the first internal screw thread, first external screw thread is adapted with the first internal screw thread.And then it is convenient by rotation adjusting top cover 43, it is real
Now to the relative motion state of inner sleeve 41 and housing 42.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of high stability hand held electric drill for being easily changed drill bit, including collet (1), fuselage (2) and drill bit (3), special
Sign is: the collet (1) includes securing device, locked instrument and attachment device；The securing device include from inside to outside according to
Secondary to be set in support set (4), first bearing (5) and the shell (6) of drill bit (3) outside, the support set (4) includes the inner sleeve being arranged inside and outside
(41) and housing (42), the inner sleeve (41) is with tapered, and inner sleeve (41) top outer is arranged with and adjusts top cover (43), described
Housing (42) is adapted with the conical surface on the outside of inner sleeve (41), and is threadedly coupled on the outside of upper section with adjusting top cover (43), the first axle
The inner ring for holding (5) is fixedly connected with housing (42), and outer ring is fixedly connected with shell (6), and the housing (42) and shell (6) rotate
Connection, shell (6) bottom are equipped with annular protrusion (7)；The locked instrument includes clamping head (8), second bearing (9), pushes away
Cover (10), guide rod (11), locker plate (12), cylinder (13) and the piston (14) being arranged in cylinder (13), the clamping head
It (8) include rotation bucket (81) and the clamping section being made of at least two clamping lobes (82) for being connected to rotation bucket (81) top, institute
It is cylindrical to state rotation bucket (81), inside is adapted with drill bit (3), and bottom is driven by fuselage (2), and the clamping lobe (82) is equal
In the circumferential direction on rotation bucket (81) top, each clamping lobe (82) can be elastically deformed in the radial direction cloth, and inside is to use
In clamping drill bit (3), outside is the conical surface, the compatible through-hole with rotation bucket (81) is equipped in the pushing sleeve (10), and can be rotated
Be supported in piston (14), the locker plate (12) is equipped with internal taper hole compatible with the male cone (strobilus masculinus) of clamping section, and can slide
In cylinder (13) inner cavity, the rotation bucket (81) of the clamping head (8) is connected in the through-hole of pushing sleeve (10) for dynamic setting, is clamped
Portion is placed in the internal taper hole of locker plate (12), the guide rod (11) at least there are two, be evenly arranged at the top of pushing sleeve (10), it is described to lead
It is connect to one end of bar (11) with locker plate (12), the other end is connect with pushing sleeve (10) bottom；The attachment device includes connection
Cylinder (15), the top inner side of the connecting cylinder (15) connect with the annular protrusion outside screw of shell (6) bottom, bottom end inside and
Cylinder (13) apical lateral is threadedly coupled.
2. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 1, it is characterised in that: described
The taper of inner sleeve (41) is 1:15.
3. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 2, it is characterised in that: described
Inner sleeve (41) is resilient sleeve.
4. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 1, it is characterised in that: described
First bearing (5) is double row tapered roller bearing.
5. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 1, it is characterised in that: described
Dustband (16) are respectively equipped between housing (42) both ends and shell (6).
6. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 1, it is characterised in that: described
The first anti-slip layer (17) are equipped on the inside of clamping lobe (82).
7. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 1, it is characterised in that: described
The second anti-slip layer (18) are equipped on the inside of inner sleeve (41).
8. a kind of high stability hand held electric drill for being easily changed drill bit according to claim 1, it is characterised in that: described
It is equipped with the first external screw thread on the outside of housing (42) upper section, equipped with the first internal screw thread on the inside of adjustings top cover (43) lower section, described the
One external screw thread is adapted with the first internal screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069438.5A CN107876834B (en) | 2017-11-03 | 2017-11-03 | A kind of high stability hand held electric drill being easily changed drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069438.5A CN107876834B (en) | 2017-11-03 | 2017-11-03 | A kind of high stability hand held electric drill being easily changed drill bit |
Publications (2)
| Publication Number | Publication Date |
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| CN107876834A CN107876834A (en) | 2018-04-06 |
| CN107876834B true CN107876834B (en) | 2019-06-04 |
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| CN201711069438.5A Expired - Fee Related CN107876834B (en) | 2017-11-03 | 2017-11-03 | A kind of high stability hand held electric drill being easily changed drill bit |
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| CN105364123A (en) * | 2014-09-01 | 2016-03-02 | 云南飞隆劳尔设备有限公司 | Portable drilling machine drilling small and long holes |
| CN205020888U (en) * | 2015-08-07 | 2016-02-10 | 天津职业技术师范大学 | Electromagnetism positioner punches |
| CN105522414B (en) * | 2016-01-22 | 2017-07-14 | 浙江大学 | A kind of drilling attachment for amplifying clamping force |
| CN105965070B (en) * | 2016-07-08 | 2018-06-19 | 环球工业机械（东莞）有限公司 | A kind of lathe with rotary moving guide case |
-
2017
- 2017-11-03 CN CN201711069438.5A patent/CN107876834B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN107876834A (en) | 2018-04-06 |
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