CN205795766U - Knife bar dismountable break-in abrasive drilling cutter - Google Patents
Knife bar dismountable break-in abrasive drilling cutter Download PDFInfo
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- CN205795766U CN205795766U CN201620446795.3U CN201620446795U CN205795766U CN 205795766 U CN205795766 U CN 205795766U CN 201620446795 U CN201620446795 U CN 201620446795U CN 205795766 U CN205795766 U CN 205795766U
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- knife bar
- cutter
- dismountable
- break
- connection handle
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Abstract
The utility model discloses a kind of knife bar dismountable break-in abrasive drilling cutter, including cutter head, cutter connection handle and the knife bar coordinated with cutter head transmission, described knife bar is placed on cutter connection handle in being rotatably assorted in the way of by axial limiting；By knife bar be rotatably assorted by the way of the most limited and in be placed on cutter connection handle, the knife bar play vertically of cutter head band cutter can be effectively prevented when cutter head pitching motion, ensure that power handle has higher stability and high efficiency to the power transmission of knife bar, avoid, during operation, beyond thought malpractice occurs, it is beneficial to ensure operation safety, and the assembly and disassembly of cutter are convenient, facilitate cutter interior to clean, and are easily maintained maintenance.
Description
Technical field
This utility model relates to medical instruments field, is specifically related to a kind of knife bar dismountable break-in abrasive drilling cutter.
Background technology
In part bone surgery, it is sometimes desirable to osseous tissue in the patient is carried out abrasive drilling operation to facilitate treatment disease
Stove；Doctor fixes, with power handle, the cutter being connected by hand-held power handle drives and carries out abrasive drilling, but deeper at operative site
And need to change due to the abrasive drilling direction of the cutter head of the uncontrollable cutter of external force during lateral abrasive drilling around so that operation the most side
Just；In order to overcome the problems referred to above, occur in that can control cutter head pitching and can around tool axis revolution for break-in abrasive drilling
Cutter, by controlling cutter head rotation, pitching and the revolution of cutter front end, conveniently carries out side grinding to deeper operative site.And show
Have in technology, typically between cutter head and power handle, carry out moment of torsion transmission by the knife bar of a bendable front end, for ensureing cutter
Bar can the transmission power of stability and high efficiency to cutter head, and ensure that cutter head break-in is easy to operate, typically by knife bar with non-removable
Mode is axially fixed at cutter connection handle, and the non-dismountable blood stains causing Post operation cutter interior of this fixed structure are difficult to
Clean.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art, it is provided that the dismountable break-in of knife bar
Abrasive drilling cutter, it is possible to ensure knife bar stably install with transmission while, knife bar is detachable, facilitates cutter interior to clean, and ties
Structure is simple, is convenient to mount and dismount.
Knife bar of the present utility model dismountable break-in abrasive drilling cutter, including cutter head, cutter connection handle and with cutter head transmission
The knife bar coordinated, described knife bar is to be placed on cutter connection handle in being rotatably assorted by axial limiting and dismountable mode.
Further, also include that keeper, described keeper axial restraint removably are arranged at cutter connection handle
And knife bar is formed described axial limiting.
Further, described keeper is placed on the positioning sleeve of cutter connection handle in being, and positioning sleeve cylindrical radially sets
Being equipped with claw, described cutter connection handle is provided with draw-in groove, and the detachable snap-fit engagement of described claw forms the institute to knife bar in draw-in groove
State axial limiting.
Further, described draw-in groove at least includes that straight trough section, described claw penetrate this straight trough section and by the pretightning force set
The axial rearward end edge being pressed in this straight trough section forms snap-fit engagement, thus forms the described axial limiting to knife bar.
Further, described draw-in groove includes the elongated slot of open rearward end, and described elongated slot and described straight trough section are by lead-over groove Duan Lian
Logical, described claw snaps in and enters described straight trough section by the opening of this elongated slot and forms snap-fit engagement.
Further, described cutter connection handle is fixed with lock tube, and described draw-in groove is arranged at lock tube.
Further, described knife bar overcoat is provided with the helical spring for providing described pretightning force, described helical spring
Front end props up cutter connection handle, and rear end acts on positioning sleeve.
Further, described keeper be rotatably assorted be coated between knife bar, and knife bar and keeper by radial groove and
The secondary axial limiting that is rotatably assorted of radial protrusion formation.
Further, described keeper is positioning sleeve, and described positioning sleeve is formed radially inward radially convex, and described knife bar is provided with
The annular groove of the pair that is rotatably assorted is cooperatively formed with this radial direction convex；The leading portion sidewall of described positioning sleeve is provided with the most through axle
To straight trough, described axial straight trough is at positioning sleeve front opening, and the width of described axial straight trough is more than or equal to the diameter of knife bar.
Further, described knife bar includes cutter bar body and front end and the co-axially fixed drive link in cutter bar body rear end, described
Drive link rear end coordinates with power handle transmission, and annular groove is arranged at drive link；Between described positioning sleeve and drive link also
It is provided with lining.
The beneficial effects of the utility model are: a kind of knife bar dismountable break-in abrasive drilling cutter disclosed in this utility model,
By knife bar be rotatably assorted by the way of the most limited and in be placed on cutter connection handle, can be effective when cutter head pitching motion
Prevent the knife bar play vertically of cutter head band cutter, it is ensured that power handle the power of knife bar is transmitted have higher stability and
High efficiency, it is to avoid occur malpractice during operation, is beneficial to ensure operation safety, and cutter assembly and disassembly are convenient, in facilitating cutter
Portion cleans, and is easily maintained maintenance.
Accompanying drawing explanation
With embodiment, this utility model is further described below in conjunction with the accompanying drawings:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the structural representation of keeper in this utility model；
Fig. 4 is the structural representation of lock tube in this utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model, and Fig. 2 is enlarged drawing at A in Fig. 1, and Fig. 3 is to position in this utility model
The structural representation of part, Fig. 4 is the structural representation of lock tube in this utility model, as it can be seen, the knife bar in the present embodiment can
The break-in abrasive drilling cutter of dismounting, including cutter head 1a, cutter connection handle 1 and the knife bar 3 coordinated with cutter head 1a transmission, described knife bar 3
To be placed on cutter connection handle 1 in being rotatably assorted by axial limiting and dismountable mode；The present embodiment represents forward along knife bar 3 axle
To pointing to the direction of cutter head 1a from cutter connection handle 1, otherwise it is backward；Described knife bar 3 can be Combined cutter arbor or integral type cutter
Bar, at least including cutter bar body 3b being positioned at front end and being fixedly and coaxially connected in cutter bar body 3b rear end during Combined cutter arbor
Drive link 3a, the rear end of drive link 3a is driven 1 and dynamic is coordinated with power handle, when knife bar 3 is provided with outer cutter pipe 3c with outer shaft sleeve, cutter
Bar body 3b is interior cutter pipe, certainly, can also be not provided with outer cutter pipe 3c outside knife bar 3；If knife bar 3 is integral type knife bar,
The rear end of knife bar 3 is driven 1 and dynamic is coordinated with power handle.The present embodiment with knockdown knife bar 3 with the structure of the outer cutter pipe 3c of outer shaft sleeve
As a example by, described cutter head 1a can be break-in drill bit and with cutter bar body 3b and the outer cutter pipe that is fixedly installed on cutter connection handle 1 front end
3c cooperatively forms and can be driven pitching, rotation and the structure along the circumferential direction revolved round the sun, the installation of described cutter head 1a and type of drive
For prior art, do not repeat them here.Knife bar 3 by being arranged at the spacing preiection of cutter connection handle 1 inner circle and can be arranged at cutter
The outer groove of bar 3 cylindrical coordinates realization to circumferentially rotate and axial limiting is arranged, or by being arranged at cutter connection handle 1 inner circle
Inner groove coordinate with the spacing preiection being arranged at knife bar 3 cylindrical also can realize circumferentially rotating and axial limiting arrange；Certainly, break-in
Abrasive drilling cutter is not limited to the cutter that cutter head 1a is reversible, and being also applied for can not break-in cutter.By knife bar 3 with by axial limiting and
Dismountable mode be rotatably assorted and in be placed on cutter connection handle 1, can effectively prevent cutter head 1a when cutter head 1a pitching motion
Knife bar 3 play vertically with cutter, it is ensured that the power of knife bar 3 is transmitted by power handle has higher stability with efficient
Property, meanwhile, knife bar is detachable, facilitates cutter interior to clean, and simple in construction, is convenient to mount and dismount.
In the present embodiment, also include that keeper 4, described keeper 4 axial restraint removably are arranged at cutter
Connection handle 1 also forms described axial limiting to knife bar 3；Described keeper 4 can be positioning sleeve, location annulus or location arc ring
Deng, keeper cylindrical and cutter connection handle 1 can be by existing Demountable secure fit, and inner circle can form radially convex
Or entirety embeds in the cannelure being arranged at knife bar 3 cylindrical, and then realize by being detachably secured to determining of cutter connection handle 1
Position part 4 realizes axial limiting to knife bar 3；When keeper 4 is positioning sleeve, being detachably fixed can be to be screwed or cylindrical formation
Claw also connects and fixes, it is simple to knife bar 3 mounting or dismounting, maintenance convenient for cleaning, improves efficiency of assembling.
In the present embodiment, described keeper 4 is placed on the positioning sleeve 4 of cutter connection handle 1 in being, and positioning sleeve 4 cylindrical is along footpath
To being outside equipped with claw 5, described cutter connection handle 1 is provided with draw-in groove 6, and the described detachable snap-fit engagement of claw 5 is in draw-in groove 6
Form the described axial limiting to knife bar 3；Described draw-in groove 6 can be directly arranged at cutter connection handle 1 inner circle, or arranges a lock tube 7,
Being placed on cutter connection handle 1 inner circle in fixing for lock tube 7, and be arranged on lock tube 7 by draw-in groove 6, described claw 5 and draw-in groove 6 can be adopted
By structures such as the interface arrangment of prior art, embedding draw-in grooves 6 as the most conformal in claw 5, form positioning sleeve 4 and be axially fixed at cutter
Tool is also adopted by the mode of axial limiting and is connected between connection handle 1, and positioning sleeve 4 with knife bar 3, therefore can be prevented by positioning sleeve 4
Only knife bar 3 is relative to cutter connection handle 1 axial float.Meanwhile, by claw 5 and draw-in groove between positioning sleeve 4 and cutter connection handle 1
6 detachable connect and fix, it is ensured that positioning sleeve 4 axial restraint position accurately and stable, and is convenient to mount and dismount.
In the present embodiment, described draw-in groove 6 at least includes that straight trough section 6a, described claw 5 penetrate this straight trough section 6a and by setting
Fixed pretightning force is pressed in the axial rearward end edge of this straight trough section 6a and forms snap-fit engagement, thus is formed being connected to positioning sleeve 4
On the axial limiting of knife bar 3；Described claw 5 penetrates straight trough section 6a can be radially or by the lead-in groove connected with straight trough section 6a
Lead into, the direction of described pretightning force for axially backward and act on positioning sleeve 4, described straight trough section 6a can axially disposed and
Its two side is the most spacing to claw 3, it is to avoid positioning sleeve 4 rotates, by the pretightning force pressuring action set, it is ensured that claw 5
With draw-in groove 6 fixing-stable, it is to avoid claw 5 loosens.
In the present embodiment, described draw-in groove 6 includes that the elongated slot 6b of open rearward end, described elongated slot 6b pass through with described straight trough section 6a
Lead-over groove section 6c connects, and described claw 5 snaps in and enters described straight trough section 6a by the opening 61b of this elongated slot 6b and forms clamping
Coordinate；As it can be seen, described elongated slot 6b, lead-over groove section 6c and straight trough section 6a can form " J " shape draw-in groove；Can during installation positioning sleeve 4
Directly rotate after cutter connection handle 1 rear end is inserted directly into and make claw 5 locking be fixed on directly under the effect of pretightning force backward
Groove section 6a, it is ensured that positioning sleeve 4 is easy for installation, and is readily disassembled.
In the present embodiment, described cutter connection handle 1 is fixed with lock tube 7, and described draw-in groove 6 is arranged at lock tube 7；Described lock tube
7 fixing in be placed on cutter connection handle 1；Described draw-in groove 6 is formed on lock tube 7 so that draw-in groove 6 is easy to process, saves processing cost
With guarantee machining accuracy, described lock tube 7 can use existing fixed form, at this with the fixing connected mode of cutter connection handle 1
Repeat no more.
In the present embodiment, described knife bar 3 overcoat is provided with the helical spring 8 for providing described axial pre tightening force, described
The front end of helical spring 8 props up cutter connection handle 1, and rear end acts on positioning sleeve 4；Also can set between helical spring 8 and positioning sleeve 4
Putting packing ring 9, arranging of packing ring 9 is beneficial to ensure that the positioning sleeve 4 elastic force direction by helical spring 8 is with axially in parallel；As schemed
Show, described knife bar dismountable break-in abrasive drilling cutter be additionally provided with cutter connection handle 1 by can by axial limiting in the way of slide
The reciprocal actuating sleeve 10 coordinated, the front end of described helical spring 8 presses on the rear end face of reciprocal actuating sleeve 10, passes through helical spring
8 compress and then for recovering deformation, positioning sleeve 4 apply axial pre tightening force axially rearward, and positioning sleeve 4 is by axially backward
Pretightning force after be locked in cutter connection handle 1, compact conformation, easy for installation, the structure of reciprocal actuating sleeve 10 and connecting is closed
System is prior art, does not repeats them here.
In the present embodiment, described keeper 4 is rotatably assorted to be coated between knife bar 3, and knife bar 3 and keeper 4 and passes through footpath
The pair that is rotatably assorted formed to groove and radial protrusion realizes axial limiting；Described radial groove can be formed by knife bar 3 and position
Part 4 forms radial protrusion, or radial groove is formed by keeper 4 and knife bar 3 forms radial protrusion；By radial groove and footpath
Realize the keeper 4 axial limiting to knife bar 3 to the pair that is rotatably assorted convexed to form, can realize simultaneously knife bar 3 circumferentially rotate and
Axial limiting, it is ensured that the efficiency of the good stability of knife bar 3 rotation and power transmission is high.
In the present embodiment, described keeper is positioning sleeve 4, and described positioning sleeve 4 is formed radially inward radially convex 13, described
Knife bar 3 is provided with the annular groove 12 cooperatively forming the pair that is rotatably assorted with this radial direction convex 13；Recessed with annular by radial direction convex 13
The cooperation of groove 12, it is achieved knife bar 3 relative localization set 4 circumferentially rotates, and positioning sleeve 4 forms axial limiting to realizing knife bar 3.Described
The leading portion sidewall of positioning sleeve 4 is provided with the most through axial straight trough 15, and described axial straight trough 15 is in positioning sleeve 4 front opening, institute
State the width diameter more than or equal to knife bar 3 of axial straight trough 15；By being equipped with of positioning sleeve 4 and axial straight trough 15, side
Just knife bar 3 is installed on positioning sleeve 4, improves assembly or disassembly efficiency.
In the present embodiment, described knife bar 3 includes cutter bar body 3b and drive link 3a, drive link 3a front end and cutter bar body 3b
Rear end is coaxially fixed, and described drive link 3a rear end coordinates with power handle transmission, and annular groove 12 is arranged at drive link 3a, passes
Lever 3a can be one-body molded with cutter bar body 3b, by the setting of drive link 3a, can be formed deeper at the cylindrical of drive link 3a
Annular groove 12；It is additionally provided with between described positioning sleeve 4 and drive link 3a for the lining 14 to drive link 3a radially location；Institute
State lining 14 to be all rotatably assorted with positioning sleeve 4 and drive link 3a, by the setting of lining 14, it is ensured that knife bar 3 and cutter connection handle 1
Alignment, it is ensured that the rotation of knife bar 3 is smooth and easy and power transmission efficiency is high.
Finally illustrating, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although ginseng
According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from objective and the model of technical solutions of the utility model
Enclosing, it all should be contained in the middle of right of the present utility model.
Claims (10)
1. knife bar dismountable break-in abrasive drilling cutter, it is characterised in that: include cutter head, cutter connection handle and with cutter head transmission
The knife bar coordinated, described knife bar is to be placed on cutter connection handle in being rotatably assorted by axial limiting and dismountable mode.
Knife bar the most according to claim 1 dismountable break-in abrasive drilling cutter, it is characterised in that: also include keeper, institute
State keeper axial restraint removably be arranged at cutter connection handle and knife bar is formed described axial limiting.
Knife bar the most according to claim 2 dismountable break-in abrasive drilling cutter, it is characterised in that: described keeper is inner sleeve
In the positioning sleeve of cutter connection handle, and positioning sleeve cylindrical is radially provided with claw, and described cutter connection handle is provided with draw-in groove,
The detachable snap-fit engagement of described claw forms the described axial limiting to knife bar in draw-in groove.
Knife bar the most according to claim 3 dismountable break-in abrasive drilling cutter, it is characterised in that: described draw-in groove at least includes
Straight trough section, described claw is penetrated this straight trough section and is pressed in the axial rearward end edge formation of this straight trough section by the pretightning force set
Snap-fit engagement, thus form the described axial limiting to knife bar.
Knife bar the most according to claim 4 dismountable break-in abrasive drilling cutter, it is characterised in that: described draw-in groove includes rear end
The elongated slot of opening, described elongated slot is connected by lead-over groove section with described straight trough section, the described claw opening card by this elongated slot
Enter and enter described straight trough section and form snap-fit engagement.
Knife bar the most according to claim 3 dismountable break-in abrasive drilling cutter, it is characterised in that: described cutter connection handle is solid
Surely being provided with lock tube, described draw-in groove is arranged at lock tube.
Knife bar the most according to claim 4 dismountable break-in abrasive drilling cutter, it is characterised in that: described knife bar overcoat is arranged
Having the helical spring for providing described pretightning force, the front end of described helical spring props up cutter connection handle, and rear end acts on fixed
Position set.
Knife bar the most according to claim 2 dismountable break-in abrasive drilling cutter, it is characterised in that: described keeper rotates joins
Conjunction is coated between knife bar, and knife bar and keeper the countershaft that is rotatably assorted by radial groove and radial protrusion formation to limit
Position.
Knife bar the most according to claim 8 dismountable break-in abrasive drilling cutter, it is characterised in that: described keeper is location
Set, described positioning sleeve is formed radially inward radially convex, and described knife bar is provided with and cooperatively forms, with this radial direction convex, the pair that is rotatably assorted
Annular groove；The leading portion sidewall of described positioning sleeve is provided with the most through axial straight trough, and described axial straight trough is before positioning sleeve
End opening, the width of described axial straight trough is more than or equal to the diameter of knife bar.
Knife bar the most according to claim 9 dismountable break-in abrasive drilling cutter, it is characterised in that: described knife bar includes cutter
Bar body and front end and the co-axially fixed drive link in cutter bar body rear end, described drive link rear end coordinates with power handle transmission,
And annular groove is arranged at drive link；It is additionally provided with lining between described positioning sleeve and drive link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446795.3U CN205795766U (en) | 2016-05-17 | 2016-05-17 | Knife bar dismountable break-in abrasive drilling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446795.3U CN205795766U (en) | 2016-05-17 | 2016-05-17 | Knife bar dismountable break-in abrasive drilling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205795766U true CN205795766U (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620446795.3U Active CN205795766U (en) | 2016-05-17 | 2016-05-17 | Knife bar dismountable break-in abrasive drilling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205795766U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259807A (en) * | 2018-10-19 | 2019-01-25 | 上海导向医疗系统有限公司 | For adjusting the dial device and peeling knife of knife bar rotation |
| CN112656477A (en) * | 2020-12-31 | 2021-04-16 | 杭州德诺脑神经医疗科技有限公司 | Aneurysm occlusion device and microcatheter therefor |
-
2016
- 2016-05-17 CN CN201620446795.3U patent/CN205795766U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259807A (en) * | 2018-10-19 | 2019-01-25 | 上海导向医疗系统有限公司 | For adjusting the dial device and peeling knife of knife bar rotation |
| CN112656477A (en) * | 2020-12-31 | 2021-04-16 | 杭州德诺脑神经医疗科技有限公司 | Aneurysm occlusion device and microcatheter therefor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |