CN206154108U - Medical polisher grinding pin clamping structure - Google Patents
Medical polisher grinding pin clamping structure Download PDFInfo
- Publication number
- CN206154108U CN206154108U CN201621075903.7U CN201621075903U CN206154108U CN 206154108 U CN206154108 U CN 206154108U CN 201621075903 U CN201621075903 U CN 201621075903U CN 206154108 U CN206154108 U CN 206154108U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- sleeve
- mill bar
- sleeve pipe
- spider
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model provides a medical polisher grinding pin clamping structure, including first sleeve pipe (2), second sleeve pipe (3), ejector pad (42), taper sleeve (41) and steel ball (5) are equipped with slotted hole (8) that the under shed diameter is less than the upper shed on second sleeve pipe (2), and steel ball (5) set up in slotted hole (8), and the taper sleeve cup joints with the second sleeve pipe and rather than sliding connection for carry on spacingly to steel ball (5), the ejector pad is used for promoting the taper sleeve and removes. This clamping structure can apply in grinding pin axial vertical's rigidity power the steel ball, vibration that the polisher during operation produced and grinding pin can not appear and lead to the problem of steel ball skew to the pressure of steel ball, avoided since the jam of the wearing and tearing increase of three lamella chuck holes and cutting thing and the grinding pin that leads to skid, press from both sides not tightly, pull out the disappearance like.
Description
Technical field
The present invention relates to medical instruments field, more particularly to a kind of medical sander mill bar clamp structure.
Background technology
The method of clamping of conventional medical sander mill bar typically has two kinds of basic modes, and one kind is three lobe chucks, Yi Zhongshi
Steel ball is clamped：
Three lobe chucks are the most frequently used method of clamping, and using the polishing nose of this kind of mode flexible three lobes folder is generally comprised
Head, the back stay being threadedly coupled therewith, the stage clip being sleeved on back stay, long body for being sleeved on outside three etc..During work,
The transmission of the motion-promotion force parameter such as its torque, rotating speed is relied between the elastic bore area of three lobes chuck and the clamping part of mill bar
Frictional force completing.Therefore the thickness of clamping part, the abrasion increase of three lobe chuck endoporus and the blocking of cutting object it is all direct
Affect clamping effect so that exist in real work skidding, it is not clamping, pull out occur without as.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of medical sander mill bar clamp structure, using wedge shape
Snap ring and circular slotted eye limit steel ball position, and by rigid power mill bar is clamped, and prevent during use due to pressure or vibrations
Produce steel ball skew and then cause the phenomenon of mill bar loosening.
The present invention is for the solution technical scheme that adopted of above-mentioned technical problem：
A kind of medical sander mill bar clamp structure, including sander body, first sleeve, the second sleeve pipe, retaining mechanism,
Steel ball, power transmission shaft and mill bar；The power transmission shaft is coaxially connected with mill bar, and mill bar outside is provided with coupled by Limit Bearing
Mill bar set；The first sleeve includes ascending, the sequentially coaxially connected spider one of radial dimension, spider two and spider three,
The inner wall of end of the spider three is connected by clutch shaft bearing with power transmission shaft outer wall, and the outer wall of the spider one covers inwall spiral shell with mill bar
Line is connected, and the mill bar passes through the opening of spider one, the bulge loop that the spider three is arranged with sander body to lean；Sander
Power transmission shaft stretch into the shaft outer wall of first sleeve and be provided with spacing ring；The power transmission shaft and mill bar composition transmission, second set
Pipe is sequentially coaxially arranged from inside to outside with first sleeve, and one end of second sleeve pipe leans with limited block, described second set
The other end of pipe by second bearing is connected through first sleeve and with the mill bar set of sander；The mill bar connects with power transmission shaft
The one end for connecing is provided with annular groove；
The position of correspondence annular groove is provided with least one slotted eye on the tube wall of second sleeve pipe, and the steel ball is arranged on groove
In hole, the bottom opening diameter of slotted eye is less than the diameter of steel ball, and the axial length of slotted eye is less than the diameter of steel ball；Steel ball projects groove
The part of hole bottom opening coordinates with annular groove set in mill bar；
The retaining mechanism is matched somebody with somebody with the second cannula slide including one and is merged for carrying out spacing tapered sleeve, Yi Jishe to steel ball
Put on first sleeve outer wall and the pushing block for promoting tapered sleeve to slide backward；One end inwall that the tapered sleeve is contacted with steel ball is
Conical surface horn structure, opening size of the horn structure near second bearing one end is more than the opening near clutch shaft bearing one end
Size, the tapered sleeve other end inwall is tubular structure, and the tapered sleeve outer wall is provided with convex annular edge；The outer wall of the spider two is symmetrical
Waist hole is provided with, the projection of waist hole is provided through on the pushing block, when needing to move tapered sleeve, the raised inner side is provided with and annular
The projection that convex edge coordinates, the convex annular is less than projection along the second quill along the length sum with projection along the second sleeve pipe axial direction
To length；
Second sleeve pipe is provided with spacing preiection near one end of power transmission shaft, and set is provided between the spacing preiection and tapered sleeve
The first spring being located on the second sleeve outer wall.
Preferably, the outer wall of the spider two is provided with the second spring for promoting pushing block return, the second spring
Two ends offset respectively with pushing block and spider three.
Preferably, the open top diameter of the slotted eye is equal to the diameter of steel ball, bottom and the steel ball of slotted eye are mutually pasted
Close.
Preferably, one end for leaning of second sleeve pipe (3) and limited block (61) and power transmission shaft (6) interference fit.
Preferably, one end of the mill bar is provided with insertion rod, power transmission shaft is provided with the blind hole being engaged with insertion rod.
The invention has the beneficial effects as follows：
1st, using steel ball clamp structure, the abrasion increase and the blocking of cutting object of three lobe chuck endoporus are effectively solved all
Directly affect clamping effect so that there is a problem that skidding in real work, it is not clamping, pull out and occur without elephant.
2nd, steel ball is carried out using tapered sleeve it is spacing, steel ball be subject to the rigid pressure axially vertical with mill bar, be not in beat
The vibration and mill bar that grinding machine is produced when working causes the problem that steel ball offsets to the pressure of steel ball, improves polishing precision.
3rd, the open top diameter of slotted eye is equal to the diameter of steel ball, and the bottom opening diameter of slotted eye is less than the diameter of steel ball,
Bottom is bonded to each other with steel ball, effectively defines the movement position of steel ball, and with reference to beneficial effect 2, the pressure suffered by steel ball is complete
Portion is rigid pressure, not existence position offset problem.
4th, retaining mechanism is divided into tapered sleeve and pushing block two parts, and by the first spring and second spring promotes its return respectively,
When second spring extends to maximum position, the projection on pushing block facilitates promotion with convex annular set on tapered sleeve along separating, both
Move after tapered sleeve, and do not affect when sander works, rotary shaft drives the second sleeve pipe to bear extra frictional resistance when rotating.
5th, the connected mode of mill bar and power transmission shaft is snap fit, and power transmission shaft only provides the turning moment output of mill bar, can
To realize power output to greatest extent.
Description of the drawings
Fig. 1 is a kind of medical sander mill bar clamp structure schematic diagram of the embodiment of the present invention.
Fig. 2 is embodiment of the present invention mill bar rear end structure schematic diagram.
Fig. 3 is embodiment of the present invention first sleeve sectional view.
Fig. 4 is the embodiment of the present invention the second sleeve pipe sectional view.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is further described.
As shown in Figures 1 to 4, a kind of medical sander mill bar clamp structure that the present invention is provided, sander body 1, the
Sleeve 2, the second sleeve pipe 3, retaining mechanism 4, steel ball 5, power transmission shaft 6 and mill bar 7；Power transmission shaft 6 is coaxially connected with mill bar 7, mill bar 7
Outside is provided with by the coupled mill bar set 9 of Limit Bearing 71；First sleeve 2 includes that radial dimension is ascending, same successively
The connected spider 1 of axle, spider 2 22 and spider 3 23, the inner wall of end of the spider 3 23 is by clutch shaft bearing 13 and biography
The outer wall of moving axis 6 is connected, and the outer wall of spider 1 covers 9 inner threads and is connected with mill bar, and mill bar 7 passes through the opening of spider 1, spider
3 23 bulge loops arranged with sander body 1 lean；The power transmission shaft 6 of sander stretches into the shaft outer wall of first sleeve 2 and is provided with
Spacing ring；The transmission of the power transmission shaft 6 and the composition of mill bar 7, the second sleeve pipe 3 sequentially coaxially set from inside to outside with first sleeve 2
Put, one end and the limited block 61 of the second sleeve pipe 3 lean, the other end of the second sleeve pipe 3 passes through first sleeve 2 and and sander
Mill bar set 9 connected by second bearing 14；One end that mill bar 7 is connected with power transmission shaft 6 is provided with annular groove 10；
The position of the upper correspondence annular groove 10 of the second sleeve pipe 3 is provided with least one slotted eye 8；Steel ball 5 is arranged in slotted eye 8,
Less than the diameter of steel ball 5, the open top diameter of slotted eye 8 is equal to the diameter of steel ball 5 to the bottom opening diameter of slotted eye 8, steel ball 5 with
The bottom of slotted eye 8 is bonded to each other, and steel ball 5 projects the part of bore in slotted eye 8 and coordinates with annular groove 10 set in mill bar 7.
Retaining mechanism 4 include one and second sleeve pipe 3 be slidably matched and for steel ball 5 is carried out spacing tapered sleeve 41 and
It is arranged on the outer wall of first sleeve 2 and the pushing block 42 for promoting tapered sleeve 41 to slide backward；One end that tapered sleeve 41 is contacted with steel ball 5
Inwall is conical surface horn structure, and opening size of the horn structure near the one end of second bearing 14 is more than near the one end of clutch shaft bearing 13
Opening size, the other end inwall of tapered sleeve 41 is tubular structure, and the outer wall of tapered sleeve 41 is provided with convex annular along 411；The spider 2 22
Outer wall is arranged with waist hole 24, and the projection 421 of waist hole 24 is provided through on pushing block 42, and raised 421 inner side is provided with and convex annular edge
411 projections 4211 for coordinating, convex annular is less than raised 421 edge along the 411 length sums with projection 4211 along the axial direction of the second sleeve pipe 3
The length of the axial direction of the second sleeve pipe 3；
Second sleeve pipe 3 is provided with spacing preiection 31 near one end of power transmission shaft 6, and set is provided between spacing preiection 31 and tapered sleeve 41
The first spring 11 being located on the outer wall of the second sleeve pipe 3.
The outer wall of spider 2 22 is provided with the second spring 12 for promoting the return of pushing block 42, the two ends of second spring 12 respectively with
Pushing block 42 and spider 3 23 offset.
One end of mill bar 7 is provided with insertion rod 72, and the power transmission shaft 6 is provided with the blind hole being engaged with insertion rod 72.
When mill bar is installed, user to the rear end of first sleeve 3 promotes pushing block 42, and pushing block 42 is by the raised phase with convex edge
Interaction promotes tapered sleeve 41 to be moved rearwards by, and due to the horn structure of tapered sleeve 41, steel ball 5 is gradually reduced by downward pressure.When
When pushing block 42 is moved rearwards by reaching its range, mill bar is inserted, unclamp pushing block 42, pushing block and tapered sleeve receive respectively second spring
With the active force return of the first spring, due to the horn structure of tapered sleeve 41, steel ball is pressed in slotted eye, and then tapered sleeve is in the first bullet
Continue to move forward under the active force of spring, until the cylindrical portions of tapered sleeve cover slotted eye, realize the positioning to steel ball.
It is identical with when installing during dismounting mill bar, to pushing block is promoted, make tapered sleeve unclamp the compressing to steel ball, then can extract out
Mill bar.
The part not illustrated in specification is prior art or common knowledge.The present embodiment is merely to illustrate the invention,
Rather than the scope of the present invention is limited, those skilled in the art are considered for the modification such as equivalent replacement that the present invention is made
Fall in invention claims institute protection domain.
Claims (5)
1. a kind of medical sander mill bar clamp structure, including sander body (1), first sleeve (2), the second sleeve pipe (3), lock
Tight mechanism (4), steel ball (5), power transmission shaft (6) and mill bar (7)；The power transmission shaft (6) is coaxially connected with mill bar (7), and mill bar (7) is outward
Side is provided with by the coupled mill bar set (9) of Limit Bearing (71)；The first sleeve (2) including radial dimension by it is little to
Greatly, sequentially coaxially connected spider one (21), spider two (22) and spider three (23), the inner wall of end of the spider three (23) leads to
Cross clutch shaft bearing (13) to be connected with power transmission shaft (6) outer wall, the outer wall of the spider one (21) is connected with mill bar set (9) inner thread,
Through the opening of spider one (21), the bulge loop that the spider three (23) is arranged with sander body (1) offsets the mill bar (7)
Lean on；The power transmission shaft (6) of sander stretches into the shaft outer wall of first sleeve (2) and is provided with spacing ring；The power transmission shaft (6) and mill bar
(7) transmission of composition, the second sleeve pipe (3) are sequentially coaxially arranged from inside to outside with first sleeve (2), second sleeve pipe (3)
One end lean with limited block (61), the other end of second sleeve pipe (3) through first sleeve (2) and with sander
Mill bar set (9) is connected by second bearing (14)；One end that the mill bar (7) is connected with power transmission shaft (6) is provided with annular groove (10)；Its
It is characterised by：
The position of correspondence annular groove (10) is provided with least one slotted eye (8), the steel ball on the tube wall of second sleeve pipe (3)
(5) it is arranged in slotted eye (8), the bottom opening diameter of slotted eye (8) is less than the diameter of steel ball (5), the axial length of slotted eye (8) is little
In the diameter of steel ball (5)；Match somebody with somebody with annular groove (10) set in mill bar (7) part of prominent slotted eye (8) bottom opening of steel ball (5)
Close；
The retaining mechanism (4) including one and second sleeve pipe (3) be slidably matched and for carrying out spacing tapered sleeve to steel ball (5)
(41) and it is arranged on first sleeve (2) outer wall and the pushing block (42) for promoting tapered sleeve (41) to slide backward；The tapered sleeve
(41) one end inwall contacted with steel ball (5) is conical surface horn structure, and the horn structure is near second bearing (14) one end
More than the opening size near clutch shaft bearing (13) one end, tapered sleeve (41) other end inwall is tubular structure to opening size,
Tapered sleeve (41) outer wall is provided with convex annular along (411)；The outer wall of the spider two (22) is arranged with waist hole (24), the pushing block
(42) projection (421) of waist hole (24) is provided through on, when needing to move tapered sleeve (41), projection (421) inner side is provided with
The projection (4211) coordinated along (411) with convex annular, the convex annular is along (411) and projection (4211) along the second sleeve pipe (3) axle
To length sum less than raised (421) along the second sleeve pipe (3) axial direction length；
Second sleeve pipe (3) is provided with spacing preiection (31), the spacing preiection (31) and tapered sleeve near one end of power transmission shaft (6)
(41) the first spring (11) being set on the second sleeve pipe (3) outer wall is provided between.
2. a kind of medical sander mill bar clamp structure according to claim 1, it is characterised in that：The spider two (22)
Outer wall is provided with the second spring (12) for promoting pushing block (42) return, the two ends of the second spring (12) respectively with pushing block
(42) offset with spider three (23).
3. a kind of medical sander mill bar clamp structure according to claim 2, it is characterised in that：The slotted eye (8)
Open top diameter is equal to the diameter of steel ball (5), and the bottom of slotted eye (8) is bonded to each other with steel ball (5).
4. a kind of medical sander mill bar clamp structure according to claim 3, it is characterised in that：Second sleeve pipe
(3) one end leant with limited block (61) and power transmission shaft (6) interference fit.
5. a kind of medical sander mill bar clamp structure according to Claims 1 to 4 any one, it is characterised in that：Institute
The one end for stating mill bar (7) is provided with insertion rod (72), and the power transmission shaft (6) is provided with the blind hole being engaged with insertion rod (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621075903.7U CN206154108U (en) | 2016-09-23 | 2016-09-23 | Medical polisher grinding pin clamping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621075903.7U CN206154108U (en) | 2016-09-23 | 2016-09-23 | Medical polisher grinding pin clamping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206154108U true CN206154108U (en) | 2017-05-10 |
Family
ID=58650627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621075903.7U Withdrawn - After Issue CN206154108U (en) | 2016-09-23 | 2016-09-23 | Medical polisher grinding pin clamping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206154108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181768A (en) * | 2016-09-23 | 2016-12-07 | 武汉多可特医疗器械有限公司 | A kind of medical polisher mill bar clamp structure |
-
2016
- 2016-09-23 CN CN201621075903.7U patent/CN206154108U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181768A (en) * | 2016-09-23 | 2016-12-07 | 武汉多可特医疗器械有限公司 | A kind of medical polisher mill bar clamp structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103624286B (en) | A kind of special-shaped part Hydraulic chuck clamp | |
| CN207522261U (en) | A kind of self-centering burnishing device of outer round mouth deburring for steel pipe end surface | |
| CN206382877U (en) | Axial workpiece clamping and positioning device | |
| CN206154108U (en) | Medical polisher grinding pin clamping structure | |
| CN104551032A (en) | Simple fixing device for machining shaft parts | |
| CN103894641A (en) | Outer-ejection-type inner expansion clamping sleeve | |
| CN106181768B (en) | A kind of medical sander mill bar clamp structure | |
| CN202271214U (en) | Energy-saving clamping device for lathes | |
| CN201900284U (en) | Spring chuck for fixing gear | |
| CN207522241U (en) | A kind of self-centering burnishing device of aperture deburring for steel tube inner hole | |
| CN205967676U (en) | Grinding shaft tooth anchor clamps | |
| CN204396945U (en) | A kind of collet | |
| CN206425561U (en) | One kind revolution, scalable, band are stopped tight secondary main shaft device | |
| CN206966797U (en) | A kind of gear-hobbing clamp | |
| CN205792076U (en) | A kind of automobile-used winding coil the end of a thread wire twisting machine | |
| CN210908246U (en) | Drill chuck | |
| CN211760301U (en) | Special clamp for grinding inner hole of valve sleeve of steering gear box | |
| CN208289147U (en) | Double internal expansion type gear-hobbing clamps | |
| CN208788290U (en) | Fixture for synchronizer gear sleeve grinding | |
| CN214383043U (en) | Reverse toggle structure | |
| CN201889658U (en) | Modular tool interface of cutting machine tool | |
| CN207479616U (en) | A kind of ultra-thin spindle box | |
| CN211464871U (en) | Clamp for finely turning back cone and spherical surface of bevel gear | |
| CN205032815U (en) | Screw dies floats and connects | |
| CN217943000U (en) | Positioning fixture for machining shaft workpieces with splines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170510 Effective date of abandoning: 20180925 |