CN209716539U - Electric tool screw thread drill chuck - Google Patents
Electric tool screw thread drill chuck Download PDFInfo
- Publication number
- CN209716539U CN209716539U CN201920583717.1U CN201920583717U CN209716539U CN 209716539 U CN209716539 U CN 209716539U CN 201920583717 U CN201920583717 U CN 201920583717U CN 209716539 U CN209716539 U CN 209716539U
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- CN
- China
- Prior art keywords
- guide sleeve
- collet
- hole
- helical gear
- toolholder body
- 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.)
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Abstract
A kind of electric tool screw thread drill chuck, including toolholder body and collet, central shaft hole is set in toolholder body, the tail end of toolholder body is equipped with the threaded hole penetrated through with central shaft hole, collet front end is equipped with the clamping hole being connected with the conical cavity of collet, toolholder body and collet dock to form an accommodating chamber being connected to central shaft hole, guide sleeve is provided in accommodating chamber, helical gear and worm screw, worm screw is provided in worm hole, six helixes being threadedly engaged with helical gear are arranged in the bar portion of worm screw, the male cone (strobilus masculinus) of guide sleeve and the inner cone face contact of collet, one screw rod is set in the inner cavity of guide sleeve, helical gear boss opens up the centre bore with screw flight cooperation, several clamping jaws are installed on the clamping jaw seat of screw front end, the male cone (strobilus masculinus) of guide sleeve is provided with the clamping jaw hole slid back and forth for clamping jaw.The utility model is mainly used on the electric tools such as electric hand drill, and clamping force is big, and can be realized quick-clamping, is conducive to improve processing efficiency.
Description
Technical field
The utility model belongs to field of power tools, and in particular to a kind of electric tool screw thread drill chuck.
Background technique
Drill chuck is one of the key fitment of Power Tools Industries and machine industry, and electric drill is the most common electronic work of people
Tool, it is convenient, cheap, easy to carry that it has many advantages, such as, the deep favorable comment by worker in hardware, decoration industry, but operator makes
More bit change is frequently necessary to when with electric drill, and existing electric tool drill chuck unreasonable structural design, installation are unstable, hold
It is easy to fall off to cause production accident, and have the defects that installation clamps or loosening drill bit is time-consuming and laborious.
Summary of the invention
The purpose of the utility model is to provide a kind of electric tool screw thread drill chuck, have chucking power big, and can be real
The advantages of existing quick-clamping.
In order to solve the problems existing in background technology, the utility model adopts the following technical solution: a kind of electric tool
With screw thread drill chuck, including toolholder body and collet, toolholder body is interior to be arranged central shaft hole, and the tail end of toolholder body is equipped with and central shaft hole
The threaded hole of perforation, collet front end are equipped with the clamping hole being connected with the conical cavity of collet, and toolholder body and collet are threadedly coupled
An accommodating chamber being connected to central shaft hole is formed, collet is also referred to as drill point set, and the outer peripheral surface of collet is equipped with 36 equal part slots or annular knurl,
Increase frictional force, convenient for the dismounting of collet, guide sleeve, helical gear and worm screw is provided in accommodating chamber, helical gear has gear sheet
Body, gear is peripherally disposed several helical teeth teeth, and a boss, gear sheet is respectively set in the rear and front end of gear
A band internal thread centre bore is opened up in the middle part of body, centre bore runs through front boss and rear boss, vertical setting one on toolholder body
The worm hole being connected to accommodating chamber, be provided with worm screw in worm hole, and the bar portion of worm screw is arranged six and is threadedly engaged with helical gear
Helix is equipped with the angular contact ball bearing with the cooperation of toolholder body front end on the shoulder of helical gear rear boss, or push away
Power ball bearing, helical gear front boss adaptation are installed in the inner cavity of guide sleeve, the male cone (strobilus masculinus) of guide sleeve and the inner conical surface of collet
It contacts, a screw rod is set in the inner cavity of guide sleeve, helical gear boss opens up the centre bore with screw flight cooperation, reduces screw rod
Length, improve the service life of screw rod.Guide sleeve guarantees the running track of screw rod, the rear end of screw rod and helical gear center
Hole is threadedly engaged, and several clamping jaws are equipped on the clamping jaw seat of screw front end, and the male cone (strobilus masculinus) of guide sleeve is provided with for sliding before and after clamping jaw
Dynamic clamping jaw hole.
The guide sleeve is the body of an open at both ends, and the front end of guide sleeve is the tapering of necking down, the front-end-cone of guide sleeve
Multiple clamping jaw holes being moved forward and backward for clamping jaw are set in portion inner cavity, and guide sleeve and collet coaxial line are installed, outside the front end of guide sleeve
The inner cone face contact of the conical surface and collet sleeve, the rear end face of guide sleeve pass through the step axial limiting of toolholder body front end, and helical gear is matched
Close the rear side for being mounted on guide sleeve.
Six worm screws and helical gear cooperate, and when rotating six screw rods using spanner, drive screw rod mobile by helical gear
To clamp or loosen cutter.Transmission is using by the way of six worm screws and helical teeth wheel drive.The head of worm screw is provided with interior hexagonal
Six helixes are arranged in the bar portion in hole, worm screw, i.e. six worm screws, worm screw circles, and helical gear turns over six helical teeth teeth, transmission effect
Rate is high, and small in size, light-weight, driving torque is big, and starting is steady, time saving and energy saving.
The tail end outer peripheral surface of toolholder body is arranged circumferentially an expanding step, convenient for the dismounting of toolholder body.
When needing to clamp drill bit, six worm screws are rotated using spanner, worm screw circles, and helical gear turns over six helical teeth
Tooth, helical gear are only rotated around the axis of toolholder body without movement, and under helical gear drive, screw rod rotates and generates forward position
It moves, base of the carrier head is pushed to move forward, 3 clamping jaws are moved forward along the clamping jaw slot of guide sleeve inner conical surface, jaws close and by cutter
It clamps, when needing to remove drill bit, six worm screws is rotated backward by spanner, 3 clamping jaws can be made to open and separated with drill bit.
The uropore of the utility model is threaded hole, passes through the main shaft of the electric tools such as screw thread and electric hand drill, impact drill, electric hammer
Connection increases driving torque by six worm screws and helical gear cooperation, and transmission efficiency is high, and starting is steady, time saving and energy saving,
It can rotate and reverse, it is easy to use, it can be realized quick-clamping, be conducive to improve processing efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic perspective view of guide sleeve；
Fig. 3 is helical gear schematic perspective view；
Fig. 4 is the schematic perspective view of worm screw.
In figure: 1. clamping jaws, 2. screw rods, 3. collets, 4. guide sleeves, 5. helical gears, 6. worm screws, 7. angular contact ball bearings, 8.
Threaded hole, 9. clamping jaw holes, 10. toolholder bodies, 11. front boss, 12. rear boss.
Specific embodiment
Referring to Fig.1-4, a kind of electric tool screw thread drill chuck, including toolholder body 10 and collet 3, in toolholder body in setting
Arbor hole, the tail end of toolholder body 10 are equipped with the threaded hole 8 penetrated through with central shaft hole, and 3 front end of collet is equipped with empty with the taper of collet
The clamping hole that chamber is connected, toolholder body 10 and collet connect to form an accommodating chamber being connected to central shaft hole to 3, setting in accommodating chamber
There are guide sleeve 4, helical gear 5 and worm screw 6, helical gear 5 has gear, and gear is peripherally disposed there are several helical teeth
A boss is respectively set in tooth, the rear and front end of gear, and a band internal thread centre bore is opened up in the middle part of gear, in
Front boss and rear boss are run through in heart hole, the worm hole that vertical setting one is connected to accommodating chamber on toolholder body 10, are arranged in worm hole
There is worm screw 6, six helixes being threadedly engaged with helical gear 5, the shoulder of the rear boss 12 of helical gear 5 is arranged in the bar portion of worm screw 6
On be equipped with 10 front end of toolholder body cooperation angular contact ball bearing 7, helical gear 5 front boss 11 adaptation is installed on guide sleeve 4
Inner cavity in, a screw rod 7 is arranged in the inner cavity of guide sleeve 4 in the male cone (strobilus masculinus) of guide sleeve 4 and the inner cone face contact of collet, screw rod 7
Rear end and the centre bore of helical gear 5 are threadedly engaged, and are equipped with several clamping jaws 1 on the clamping jaw seat of 2 front end of screw rod, guide sleeve 4 it is outer
The conical surface is provided with the clamping jaw hole 9 slid back and forth for clamping jaw 1.The guide sleeve 4 is the body of an open at both ends, before guide sleeve 4
End is the tapering of necking down, and multiple clamping jaw holes 9 being moved forward and backward for clamping jaw 1, guide sleeve are arranged in the forward end taper inner cavity of guide sleeve 4
4 install with 3 coaxial line of collet, the front end male cone (strobilus masculinus) of guide sleeve 4 and the inner cone face contact of collet sleeve, and the rear end face of guide sleeve 4 is logical
The step axial limiting of 10 front end of toolholder body is crossed, helical gear 5 is fitted to the rear side of guide sleeve 4.
The utility model is connect by the threaded hole of toolholder body tail end with electric hand drill, when needing to clamp drill bit, using pulling
Hand rotates six worm screws, and worm screw 6 circles, and helical gear 5 turns over six helical teeth teeth, only revolves around the axis of toolholder body in helical gear 4
Then do not move, under the drive of helical gear 5, screw rod 7 rotates and generates forward displacement, and push base of the carrier head to move forward, 3
Clamping jaw is moved forward along the clamping jaw slot of guide sleeve inner conical surface, and 3 clamping jaws 8 close up and clamp cutter.When needing to remove drill bit, lead to
It crosses spanner and rotates backward six worm screws, 3 clamping jaws 8 can be made to open and separated with drill bit；Pass through matching for worm screw 6 and helical gear 5
It closes, increases driving torque, be 3 times of common drill chuck or so, transmission efficiency is high, and starting is steady, and it is time saving and energy saving, it can rotate forward
And reversion, it is easy to use.
Claims (3)
1. electric tool screw thread drill chuck, including toolholder body and collet, toolholder body is interior to be arranged central shaft hole, the tail end of toolholder body
Equipped with the threaded hole penetrated through with central shaft hole, collet front end is equipped with the clamping hole being connected to its conical cavity, toolholder body and collet
Docking forms an accommodating chamber being connected to central shaft hole, it is characterised in that: guide sleeve (4), helical gear (5) are provided in accommodating chamber
With worm screw (6), helical gear (5) has gear, and gear is peripherally disposed several helical teeth teeth, gear
A boss is respectively set in rear and front end, and a band internal thread centre bore is opened up in the middle part of gear, and centre bore runs through lordosis
Platform and rear boss, the worm hole that vertical setting one is connected to accommodating chamber on toolholder body (10) are provided with worm screw (6) in worm hole,
Six helixes being threadedly engaged with helical gear (5), the shoulder of the rear boss (12) of helical gear (5) is arranged in the bar portion of worm screw (6)
On be equipped with toolholder body (10) front end cooperation angular contact ball bearing (7), helical gear (5) front boss (11) adaptation is installed on
In the inner cavity of guide sleeve (4), the male cone (strobilus masculinus) of guide sleeve (4) and the inner cone face contact of collet are arranged one in the inner cavity of guide sleeve (4)
Screw rod (2), the rear end of screw rod (2) and the centre bore of helical gear (5) are threadedly engaged, and are equipped on the clamping jaw seat of screw rod (2) front end
Several clamping jaws (1), the male cone (strobilus masculinus) of guide sleeve (4) are provided with the clamping jaw hole (9) slid back and forth for clamping jaw (1).
2. electric tool according to claim 1 screw thread drill chuck, it is characterised in that: the guide sleeve (4) is one liang
Open body is held, the front end of guide sleeve (4) is the tapering of necking down, and multiple confessions are arranged in the forward end taper inner cavity of guide sleeve (4)
The clamping jaw hole (9) that clamping jaw (1) is moved forward and backward, guide sleeve (4) and collet (3) coaxial line are installed, the front end male cone (strobilus masculinus) of guide sleeve (4)
With the inner cone face contact of collet sleeve, the rear end face of guide sleeve (4) passes through the step axial limiting of toolholder body (10) front end, helical gear
(5) it is fitted to the rear side of guide sleeve (4).
3. electric tool according to claim 1 screw thread drill chuck, it is characterised in that: the tail end periphery of toolholder body (10)
Face is arranged circumferentially an expanding step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920583717.1U CN209716539U (en) | 2019-04-26 | 2019-04-26 | Electric tool screw thread drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920583717.1U CN209716539U (en) | 2019-04-26 | 2019-04-26 | Electric tool screw thread drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209716539U true CN209716539U (en) | 2019-12-03 |
Family
ID=68673843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920583717.1U Active CN209716539U (en) | 2019-04-26 | 2019-04-26 | Electric tool screw thread drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209716539U (en) |
-
2019
- 2019-04-26 CN CN201920583717.1U patent/CN209716539U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |