CN203316743U - Live center capable of performing axial motion - Google Patents
Live center capable of performing axial motion Download PDFInfo
- Publication number
- CN203316743U CN203316743U CN2013203763763U CN201320376376U CN203316743U CN 203316743 U CN203316743 U CN 203316743U CN 2013203763763 U CN2013203763763 U CN 2013203763763U CN 201320376376 U CN201320376376 U CN 201320376376U CN 203316743 U CN203316743 U CN 203316743U
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- Prior art keywords
- adjusting nut
- top assembly
- nut
- internal thread
- inner chamber
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Abstract
The utility model provides a live center capable of performing axial motion. The live center comprises a center assembly, a supporting seat, a limiting screw, an adjusting nut and a locking nut, wherein a ring groove is formed in one external end of the center assembly; a stepped shaft consisting of a large-diameter shaft and a small-diameter shaft is arranged at the other end of the center assembly; an internal thread is arranged inside the small-diameter shaft of the center assembly; an inner cavity, which is used for containing the center assembly, is formed in the middle of the supporting seat; an internal thread, which is matched with the adjusting nut, is arranged in one end of the inner cavity of the supporting seat; a screw hole, which is matched with the limiting screw, is formed in the peripheral surface of the supporting seat and in a position corresponding to the ring groove outside the center assembly; a stepped hole consisting of a large-diameter hole and a small-diameter hole is formed inside the adjusting nut; the small-diameter hole is capable of containing the small-diameter shaft of the center assembly; an external thread, which is matched with the internal thread of the inner cavity of the supporting seat and the locking nut, is arranged outside the adjusting nut. The live center is in accordance with circumferential operation and can perform axial motion.
Description
Technical field
The utility model relates to live center, and it is specifically related to a kind of live center that carries out axially-movable.
Background technology
The top of current domestic use has two kinds: a kind of is stationary center (back dead centre), usually is contained in the spindle taper hole of lathe or use in the tailstock hole; Another kind is live center, and this is top consists of housing, top body, bearing etc. usually, and top body can rotate relative to housing.Toply itself all can not realize axial reciprocating motion, be restricted in the application of automation for above-mentioned two kinds.
The utility model content
The purpose of this utility model is to solve the problem that prior art exists, and a kind of live center that carries out axially-movable is provided, and this live center can carry out axially-movable when meeting the circumference operation; Top assembly adopts combining structure, the top body of simple and easy replacing according to actual needs; Be provided with spring, can make top assembly automatically reset and stretch out, can adjust the pressure value of spring with acquiring demand by adjusting nut simultaneously.
In order to reach above-mentioned technical purpose, the utility model by the following technical solutions:
A kind of live center that carries out axially-movable, comprise top assembly, bearing, stop screw, adjusting nut, locking nut, the other end that an end of described top assembly outside is provided with annular groove, top assembly is that the Step Shaft that forms of large journal axle and path axle, the path axle inside of top assembly are provided with internal thread; Be provided with the inner chamber that holds top assembly in the middle of described bearing, be provided with the internal thread matched with described adjusting nut in one end of described bearing inner chamber, on described bearing outer peripheral face, the position corresponding with the annular groove of described top assembly outside be provided with the screw matched with described stop screw; The inside of described adjusting nut is provided with the stepped hole of hole, large footpath and diameter holes composition, diameter holes can hold the little journal axle of described top assembly, and the outside of described adjusting nut is provided with the external screw thread matched with internal thread and the described locking nut of described bearing inner chamber; The external screw thread of described adjusting nut is with after the internal thread of described bearing inner chamber matches, and described locking nut coordinates described adjusting nut is fixed with the external screw thread of described adjusting nut.
As such scheme preferably, described top assembly comprises having top and top body axle journal, round nut, two bearings, shell and spacer, be provided with in described shell and hold described top body, round nut, the inner chamber of two bearings and spacer, the inner chamber of shell is provided with near a top end internal thread matched with described round nut, described two bearings is placed in the two ends of described axle journal, described spacer is sheathed on described axle journal outside, between two bearings, described round nut matches with the internal thread of described shell, with in two bearings one near.
As such scheme preferably, also comprise spring, described spring is placed in described bearing inner chamber, between the hole, large footpath of the outside of the Step Shaft of described top assembly and described adjusting nut.
As such scheme preferably, described bearing is the centripetal cylindrical bearing of conical bore biserial.
Owing to having said structure, the utility model has the following advantages compared to existing technology: a kind of live center that carries out axially-movable that the utility model provides, and this live center can carry out axially-movable when meeting the circumference operation; Top assembly adopts combining structure, the top body of simple and easy replacing according to actual needs; Be provided with spring, can make top assembly automatically reset and stretch out, can adjust the pressure value of spring with acquiring demand by adjusting nut simultaneously.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation that Fig. 1 is the utility model embodiment mono-;
The structural representation that Fig. 2 is the top assembly in the utility model embodiment;
The structural representation that Fig. 3 is the bearing in the utility model embodiment;
The structural representation that Fig. 4 is the adjusting nut in the utility model embodiment;
The structural representation of the practice that Fig. 5 is the utility model embodiment mono-;
The structural representation that Fig. 6 is the utility model embodiment bis-;
The structural representation of the practice that Fig. 7 is the utility model embodiment bis-.
The specific embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of embodiment mono-that carries out the live center of axially-movable, comprises top assembly 1, bearing 2, stop screw 3, adjusting nut 4, locking nut 5 and spring 6, as shown in Figure 2, described top assembly 1 also comprises having top and top body 101 axle journal, round nut 102, two bearings 103 and 104, shell 105 and spacer 106, be provided with in described shell 105 and hold described top body 101, round nut 102, two bearings 103 and 104 and the inner chamber of spacer 106, the inner chamber of shell is provided with near a top end internal thread matched with described round nut, and described two bearings 103 and 104 is placed in the two ends of described axle journal, and described spacer 106 is sheathed on described axle journal outside, between two bearings 103 and 104, described round nut 102 matches with the internal thread of described shell 105, with in two bearings one 103 near, an end of the shell 105 of described top assembly 1 is provided with annular groove 11, the other end of shell 105 is the Step Shaft 12 that large journal axle and path axle form, the path axle inside of top assembly is provided with internal thread 13, as shown in Figure 3, be provided with the inner chamber 21 that holds top assembly 1 in the middle of described bearing 2, be provided with the internal thread 22 matched with described adjusting nut 4 in one end of described bearing inner chamber, on described bearing 2 outer peripheral faces, the position corresponding with the annular groove 11 of described top assembly outside be provided with the screw 23 matched with described stop screw 3, as shown in Figure 4, the inside of described adjusting nut 4 is provided with the stepped hole 41 of hole, large footpath and diameter holes composition, diameter holes can hold the little journal axle of described top assembly, and the outside of described adjusting nut 4 is provided with the external screw thread 42 matched with internal thread 22 and the described locking nut 5 of described bearing inner chamber 21, the external screw thread 42 of described adjusting nut 4 is with after the internal thread 22 of described bearing inner chamber 21 matches, and described locking nut 5 coordinates described adjusting nut 4 fixing with the external screw thread 43 of described adjusting nut 4.As shown in Figure 1, described spring 6 be placed in 21 li of described bearing inner chambers, between the hole, large footpath of the outside of the Step Shaft 12 of described top assembly and described adjusting nut 4.
A kind of live center that carries out axially-movable that the utility model provides, this live center can carry out axially-movable when meeting the circumference operation; Top assembly adopts combining structure, the top body of simple and easy replacing according to actual needs; Be provided with spring, can make top assembly automatically reset and stretch out, can adjust the pressure value of spring with acquiring demand by adjusting nut simultaneously.
Preferably, described bearing 103 and 104 is the centripetal cylindrical bearing of conical bore biserial.Facilitate the replacing of top body.
Fig. 5 shows the structural representation of a kind of practice of the embodiment in Fig. 1.Provide a kind of live center that carries out axially-movable to be connected with driving element 8 by connection bracket 7 the utility model, the described driving element 8 rear use nut that is threaded with the internal thread 13 of the path axle inside of top assembly 1 is fixed the two.According to actual needs, adjust the precompression of spring 6 by adjusting nut 4, thereby adjust top pressure.During top stretching out, driving element does not apply power to top assembly, and after driving element applies power to top assembly, top assembly can be subjected to displacement along with the power thrusts of driving element, and displacement is the width of annular groove 11 to the maximum.
Fig. 6 shows the structural representation of embodiment bis-of the live center of the axially-movable carried out that the utility model provides.Different from embodiment mono-, in embodiment bis-without spring.Can realize in the present embodiment that top pressure is larger.
Fig. 7 shows the structural representation of a kind of practice of the embodiment in Fig. 6.In structure in this embodiment, except without spring, other structure is all identical with structure and annexation in Fig. 5.In operation principle, owing to there is no spring, can not adjust top pressure, top pressure maximum in the present embodiment, other operation principle is all identical with Fig. 5.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (4)
1. the live center that can carry out axially-movable, it is characterized in that, comprise top assembly, bearing, stop screw, adjusting nut, locking nut, the other end that an end of described top assembly outside is provided with annular groove, top assembly is that the Step Shaft that forms of large journal axle and path axle, the path axle inside of top assembly are provided with internal thread; Be provided with the inner chamber that holds top assembly in the middle of described bearing, be provided with the internal thread matched with described adjusting nut in one end of described bearing inner chamber, on described bearing outer peripheral face, the position corresponding with the annular groove of described top assembly outside be provided with the screw matched with described stop screw; The inside of described adjusting nut is provided with the stepped hole of hole, large footpath and diameter holes composition, diameter holes can hold the little journal axle of described top assembly, and the outside of described adjusting nut is provided with the external screw thread matched with internal thread and the described locking nut of described bearing inner chamber; The external screw thread of described adjusting nut is with after the internal thread of described bearing inner chamber matches, and described locking nut coordinates described adjusting nut is fixed with the external screw thread of described adjusting nut.
2. the live center that carries out axially-movable according to claim 1, it is characterized in that, described top assembly comprises having top and top body axle journal, round nut, two bearings, shell and spacer, be provided with in described shell and hold described top body, round nut, the inner chamber of two bearings and spacer, the inner chamber of shell is provided with near a top end internal thread matched with described round nut, described two bearings is placed in the two ends of described axle journal, described spacer is sheathed on described axle journal outside, between two bearings, described round nut matches with the internal thread of described shell, with in two bearings one near.
3. the live center that carries out axially-movable according to claim 1 and 2, is characterized in that, also comprises spring, and described spring is placed in described bearing inner chamber, between the hole, large footpath of the outside of the Step Shaft of described top assembly and described adjusting nut.
4. the live center that carries out axially-movable according to claim 2, is characterized in that, described bearing is the centripetal cylindrical bearing of conical bore biserial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203763763U CN203316743U (en) | 2013-06-27 | 2013-06-27 | Live center capable of performing axial motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203763763U CN203316743U (en) | 2013-06-27 | 2013-06-27 | Live center capable of performing axial motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203316743U true CN203316743U (en) | 2013-12-04 |
Family
ID=49656140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203763763U Expired - Fee Related CN203316743U (en) | 2013-06-27 | 2013-06-27 | Live center capable of performing axial motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203316743U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019719A (en) * | 2014-05-30 | 2014-09-03 | 辽宁新风企业集团有限公司 | Lift range measuring device |
| CN105186773A (en) * | 2015-09-25 | 2015-12-23 | 湖北三江航天万山特种车辆有限公司 | Electric threaded transmission type stopper |
| CN106077722A (en) * | 2016-08-03 | 2016-11-09 | 长葛市世军机械加工厂 | Machining thimble |
| CN111409039A (en) * | 2020-04-21 | 2020-07-14 | 广东博智林机器人有限公司 | Quick-change locking mechanism and building machine |
-
2013
- 2013-06-27 CN CN2013203763763U patent/CN203316743U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019719A (en) * | 2014-05-30 | 2014-09-03 | 辽宁新风企业集团有限公司 | Lift range measuring device |
| CN104019719B (en) * | 2014-05-30 | 2019-01-11 | 辽阳钜锋汽车零部件有限公司 | Lift range measuring apparatus |
| CN105186773A (en) * | 2015-09-25 | 2015-12-23 | 湖北三江航天万山特种车辆有限公司 | Electric threaded transmission type stopper |
| CN106077722A (en) * | 2016-08-03 | 2016-11-09 | 长葛市世军机械加工厂 | Machining thimble |
| CN111409039A (en) * | 2020-04-21 | 2020-07-14 | 广东博智林机器人有限公司 | Quick-change locking mechanism and building machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20170627 |