CN211727511U - Spring center - Google Patents
Spring center Download PDFInfo
- Publication number
- CN211727511U CN211727511U CN201922224496.1U CN201922224496U CN211727511U CN 211727511 U CN211727511 U CN 211727511U CN 201922224496 U CN201922224496 U CN 201922224496U CN 211727511 U CN211727511 U CN 211727511U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- thimble
- rear end
- spring
- end cap
- 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.)
- Active
Links
Images
Landscapes
- Springs (AREA)
Abstract
The utility model discloses a spring is top relates to the top technical field of spring, which comprises a sleeve, telescopic bottom is provided with rather than matched with rear end cap, and is connected through fixing bolt between rear end cap and the sleeve, the thimble of sleeve inside top swing joint extension to its top, the inside swing joint that is located of sleeve has the spring between thimble and the rear end cap, the both sides of thimble all are provided with the locking groove, telescopic top is provided with the sealing washer, and the sealing washer inboard is provided with the protruding piece anastomotic with the locking groove. The utility model discloses a set up the rear end cap in telescopic bottom, and the rear end cap passes through fixing bolt with the sleeve to be connected, when needing to be changed the spring, directly open the rear end cap, alright take out the spring and change, it is comparatively convenient, and telescopic top is provided with the sealing washer, and the inboard of sealing washer is provided with the protruding piece of mutually supporting with the locking groove of thimble both sides, prevents the entering of greasy dirt and dust.
Description
Technical Field
The utility model relates to a top technical field of spring specifically is a top of spring.
Background
The center is a machine tool part in machining, and comprises a fixed center and a movable center, the lathe is used for centering and bearing the gravity and cutting force of a workpiece, the front center of the lathe can be directly arranged in a taper hole of a main shaft of the lathe, and the front center and the workpiece rotate together without relative movement, so that quenching is not needed.
The existing spring center still needs to unscrew the locking screw when replacing the spring, takes out the thimble, and then takes out the spring and replace the spring, and is more troublesome, because sleeve and thimble are clearance fit, the clearance of the locking groove of thimble both sides is great, gets into greasy dirt and dust very easily between sleeve and the thimble, influences the life of thimble.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problem that when the spring of the existing spring center is replaced, a locking screw needs to be unscrewed to take out the ejector pin, so that the spring is taken out and replaced, the spring is troublesome, and because the sleeve and the ejector pin are in clearance fit, the clearance of the locking grooves on the two sides of the ejector pin is large, oil stains and dust can easily enter the sleeve and the ejector pin, and the service life of the ejector pin is influenced, the spring center is provided.
In order to achieve the above object, the utility model provides a following technical scheme: the spring center comprises a sleeve, wherein a rear end cover matched with the sleeve is arranged at the bottom of the sleeve, the rear end cover is connected with the sleeve through a fixing bolt, the top end of the inside of the sleeve is movably connected with a thimble extending to the upper side of the sleeve, a spring is movably connected between the thimble and the rear end cover inside the sleeve, the two sides of the thimble are provided with locking grooves, the top of the sleeve is provided with a sealing ring, a protruding block matched with the locking grooves is arranged on the inner side of the sealing ring, the top ends of the two sides of the sleeve are provided with threaded holes, and the internal threads of the threaded holes are connected with locking bolts matched with the locking grooves.
In a preferred embodiment of the present invention, the bottom of the thimble is provided with a stopper.
In a preferred embodiment of the present invention, both sides of the sleeve are provided with grooves for engaging with the locking bolts, and the bottom of the rear end cap is provided with grooves for engaging with the fixing bolts.
In a preferred embodiment of the present invention, the bottom of the limiting block is provided with a limiting ring, and the shape of the limiting ring is cylindrical with a thin wall.
In a preferred embodiment of the present invention, the material of the sealing ring is thermoplastic polyurethane elastomer rubber.
Due to the adoption of the technical scheme, the beneficial effects of the utility model reside in that: the utility model discloses a set up the rear end cap in telescopic bottom, and the rear end cap passes through fixing bolt with the sleeve and is connected, when needing to be changed the spring, directly open the rear end cap, alright take out the spring and change, it is comparatively convenient, and telescopic top is provided with the sealing washer, and the inboard of sealing washer is provided with the protruding piece of mutually supporting with the locking groove of thimble both sides, and then makes the spring top when being used, prevents the entering of greasy dirt and dust.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is an external view of the present invention.
Fig. 4 is a schematic structural diagram of the sealing ring of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, a spring center comprises a sleeve 1, a rear end cover 2 matched with the sleeve 1 is arranged at the bottom of the sleeve 1, the rear end cover 2 is connected with the sleeve 1 through a fixing bolt 9, a thimble 3 extending to the upper side of the sleeve 1 is movably connected to the top end of the sleeve 1, a spring 8 is movably connected between the thimble 3 and the rear end cover 2 inside the sleeve 1, locking grooves 4 are formed in two sides of the thimble 3, a sealing ring 10 is arranged at the top of the sleeve 1, a protruding block 12 matched with the locking grooves 4 is arranged on the inner side of the sealing ring 10, threaded holes 7 are formed in the top ends of two sides of the sleeve 1, and a locking bolt 5 matched with the locking grooves 4 is in threaded connection inside the threaded holes 7.
The utility model discloses a set up rear end cap 2 in sleeve 1's bottom, and rear end cap 2 passes through fixing bolt 9 with sleeve 1 and is connected, when spring 8 needs to be changed, directly open rear end cap 2, alright take out spring 8 and change, it is comparatively convenient, and sleeve 1's top is provided with sealing washer 10, sealing washer 10's inboard is provided with the protruding piece 12 of mutually supporting with the locking groove 4 of 3 both sides of thimble, and then when making the spring top used, prevent the entering of greasy dirt and dust.
Please refer to fig. 1, the bottom of the thimble 3 is provided with a stopper 11, the bottom of the thimble 3 is provided with the stopper 11, so as to prevent the thimble 3 from sliding off when not in use.
Please refer to fig. 1 heavily, sleeve 1 both sides all are provided with the recess with locking bolt 5 matched with, and the bottom of rear end cap 2 is provided with the recess with fixing bolt 9 matched with, the utility model discloses a sleeve 1 both sides all are provided with the recess with locking bolt 5 matched with, and the bottom of rear end cap 2 is provided with the recess with fixing bolt 9 matched with, sets up the recess, more convenient use locking bolt 5 and fixing bolt 9.
Please refer to fig. 1 emphatically, the bottom of the limiting block 11 is provided with the limiting ring 6, and the shape of the limiting ring 6 is cylindrical with a thin wall, the utility model discloses a bottom of the limiting block 11 is provided with the limiting ring 6, prevents that when using, the inside greasy dirt and the dust that get into of sleeve 1.
Please refer to fig. 1, the material of the sealing ring 10 is thermoplastic polyurethane elastomer rubber, and the sealing ring 10 of the present invention is thermoplastic polyurethane elastomer rubber, which has the characteristics of good wear resistance, oil stain resistance and good elasticity.
The working principle is as follows: when in use, the locking bolt 5 is unscrewed to enable the thimble to move axially along the sleeve 1, the spring center is installed on a taper shank of a machine tool main shaft, an article to be jacked is placed at the head of the thimble 3 to fix the article, the spring 8 is arranged at the bottom of the thimble 3 and is compressed, the outer part of the thimble 3 is matched with the sleeve 1 with a side threaded hole 7, the bolt matched with the threaded hole 7 is provided with the locking bolt 5, the two sides of the thimble 3 are both provided with locking grooves 4, when the thimble 3 jacks the article, the locking bolt 5 is screwed, the tail end of the locking bolt 5 extrudes the locking groove 4 to fix the article, the tail part of the thimble is provided with a limiting block 11, the limiting block 11 prevents the thimble 3 from sliding down when the thimble 3 of the spring center is not used, the top of the sleeve 1 is provided with a sealing ring 10 to cover a gap between the sleeve 1 and the thimble 3, prevent the entering of dust and greasy dirt, damage the thimble, reduce life, when live time is of a specified duration, spring 8 can reduce life, unscrews fixing bolt 9 this moment, opens rear end cap 2, conveniently changes spring 8, and is comparatively convenient.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. A spring tip comprising a sleeve, characterized in that: the telescopic bottom is provided with rather than matched with rear end housing, and is connected through fixing bolt between rear end housing and the sleeve, the thimble of sleeve inside top swing joint extension to its top, swing joint has the spring between inside thimble and the rear end housing that is located of sleeve, the both sides of thimble all are provided with the locking groove, telescopic top is provided with the sealing washer, and the sealing washer inboard is provided with the protruding piece that coincide with the locking groove, the top of sleeve both sides all is provided with the screw hole, and the inside threaded connection of screw hole has the locking bolt of mutually supporting with the locking groove.
2. A spring tip according to claim 1, wherein: the bottom of thimble is provided with the stopper.
3. A spring tip according to claim 1, wherein: the sleeve both sides all are provided with the recess with locking bolt matched with, the bottom of rear end cover is provided with the recess with fixing bolt matched with.
4. A spring tip according to claim 2, wherein: the bottom of stopper is provided with the spacing collar, and the shape of spacing collar is the thin wall cylindric.
5. A spring tip according to claim 1, wherein: the sealing ring is made of thermoplastic polyurethane elastomer rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922224496.1U CN211727511U (en) | 2019-12-12 | 2019-12-12 | Spring center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922224496.1U CN211727511U (en) | 2019-12-12 | 2019-12-12 | Spring center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211727511U true CN211727511U (en) | 2020-10-23 |
Family
ID=72874817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922224496.1U Active CN211727511U (en) | 2019-12-12 | 2019-12-12 | Spring center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211727511U (en) |
-
2019
- 2019-12-12 CN CN201922224496.1U patent/CN211727511U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211727511U (en) | Spring center | |
| CN203699721U (en) | Adjustable slide block device for telescopic boom | |
| CN209615393U (en) | A kind of rubber ring precision installs fixture | |
| CN201277216Y (en) | Internal-guiding grip oil cylinder | |
| CN204934633U (en) | A kind of chain digital control gear hobbing machine tailstock rolling center | |
| CN2577035Y (en) | Rolling bearing | |
| CN210371580U (en) | Multifunctional screw | |
| CN204183354U (en) | Jewel fixture | |
| CN203390216U (en) | Aluminum ingot lathe tail frame | |
| CN209272492U (en) | A kind of telescopic nitrogen is top | |
| CN218089673U (en) | Rotating ejector pin for quenching transmission shaft | |
| CN213257148U (en) | Replaceable rotary transition center | |
| CN213257150U (en) | Alloy material's live center mechanism | |
| CN212928522U (en) | Four-point contact ball turntable bearing ball hole plug | |
| CN220185074U (en) | Removable composite milling cone | |
| CN202718954U (en) | Novel hydraulic oil cylinder | |
| CN209953526U (en) | High-precision forming die frame of output gear | |
| CN201677099U (en) | Die and die box | |
| CN211922759U (en) | Connecting mechanism for bucket and bucket rod of excavator | |
| CN213257149U (en) | Replaceable rotary lengthened centre | |
| CN220791772U (en) | Screw bearing for track traffic door system | |
| CN213257147U (en) | Rotating center mechanism | |
| CN220480477U (en) | Thread repairing device | |
| CN214404188U (en) | A overlength flexible hydro-cylinder for bridge inspect vehicle | |
| CN210208340U (en) | Mechanical die convenient to position |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 899 Yuanzhong Road, Nanhui Industrial Park, Pudong New Area, Shanghai, 201314 Patentee after: Shanghai Hongzhong Equipment Co.,Ltd. Address before: 899 Yuanzhong Road, Nanhui Industrial Park, Pudong New Area, Shanghai, 201314 Patentee before: SHANGHAI HONGCHONG MACHINERY EQUIPMENT Co.,Ltd. |