CN203992612U - Disc scissors axle radial limiting device - Google Patents
Disc scissors axle radial limiting device Download PDFInfo
- Publication number
- CN203992612U CN203992612U CN201420407970.9U CN201420407970U CN203992612U CN 203992612 U CN203992612 U CN 203992612U CN 201420407970 U CN201420407970 U CN 201420407970U CN 203992612 U CN203992612 U CN 203992612U
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- China
- Prior art keywords
- bearing
- axle
- rubber spring
- limiting device
- cutter shaft
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Abstract
The utility model discloses a kind of disc scissors axle radial limiting device, state stopping means and comprise successively from bottom to up screw, pressing plate, cylindrical rubber spring and back shaft, at back shaft upper surface, also have axle, axle and locking nut are fixed bearing.This device, by adopting rubber spring cutter shaft directly to be applied to the mode of pretightning force, overcomes the gap of the inside and outside circle of bearing, thereby eliminates the impact on cutterhead lap and side clearance adjustment; The large damping characteristic having by rubber spring self, reduces the impact in production process simultaneously, plays the effect of damping, buffering; Also reduce the required precision to bearing, when reaching and reducing costs, improved the use of circle shear and the object of degree of regulation.
Description
Technical field
The utility model belong to after hot-strip pickling with steel and with the steel edge portion shearing technique field in steel post processing unit, particularly a kind of disc scissors axle radial limiting device.
Background technology
In rolling mill production line, for carrying out the shearing of limit portion through circle shear with steel and with the band steel in steel post processing unit after pickling, to meet the width requirement of finished strip, be a procedure very crucial in whole rolling mill production line.For circle shear, the height of trimming quality has very close relationship with every side tool dish side clearance and lap, and also the use of the operation on follow-up, downstream user and lumber recovery are produced to very large impact with the quality of steel trimming, and affect the final mass of product; Meanwhile, side clearance and lap are also on there being very large impact the service life of cutterhead, and accurately reasonably side clearance and lap will improve the quality of product and the service life of cutterhead well.
In circle shear design process, the factor that has influence on cutterhead side clearance and lap is a lot, comprises rigging error between intrinsic gap error, cutter shaft and the broach shell in electrical control error, transmission system etc.According to computational analysis, can very intuitively draw, in all influence factors, rigging error impact between cutter shaft and broach shell is the most direct, also be maximum, trace it to its cause and be to exist and relatively rotate between cutter shaft and broach shell, therefore be provided with bearing, between the inner ring of bearing and outer ring, exist gap, in the process of when cutting strip steel through rotary shears, will cause cutter shaft upwards to lift under the effect of shearing force, lower cutter shaft is depressed downwards on the contrary, has caused side clearance and lap between upper and lower cutterhead that change has occurred.Therefore, in the design of existing circle shear, all adopted the even bearing of superfinishing level of confidentiality of micron order, yet even if adopt the bearing of micron order, its intrinsic gap is also very large with respect to the required precision of side clearance and lap.
Therefore, be necessary very much to develop a kind of brand-new device, can avoid circle shear in shear history, because the cause of the inside and outside ring gap of bearing causes side clearance and lap to be affected; Reduce the requirement to bearing accuracy simultaneously, thereby reach, reduce costs and put forward high-precision object.
Utility model content
The purpose of this utility model is to propose a kind of disc scissors axle radial limiting device.
To achieve these goals, by the following technical solutions: a kind of disc scissors axle radial limiting device, it is characterized in that: described stopping means comprises screw, pressing plate, cylindrical rubber spring and back shaft from bottom to up successively, at back shaft upper surface, also have axle, axle and locking nut are fixed bearing.
Described device also comprises the slip ring being arranged on circle shear cutter shaft, and slip ring is corresponding with the position of bearing.
Screw is used for rubber spring to apply axial force, thereby overcomes bearing radial gap.
Pressing plate is arranged between screw and rubber spring, for by the force transmission of screw to rubber spring.
Cylindrical rubber spring fitting, between pressing plate and back shaft, is used to cutter shaft that radial tightening power is provided, thereby eliminates the impact of the inside and outside ring gap of bearing on cutterhead lap and side clearance; The large damping characteristic having by rubber spring self, reduces the impact in production process simultaneously, plays the effect of damping, buffering.
Back shaft is used to bearing that supporting is provided, and bears the active force from rubber spring simultaneously, and the active force of rubber spring is finally passed to cutter shaft by bearing and slip ring.
Locking nut is used for the bearing inner race that is locked, and guarantees that bearing is normally worked in the course of the work.
Bearing is used to cutter shaft that radial load is provided, and can in the course of the work, along with the rotation of cutter shaft, rotate; Bearing is fixedly mounted on back shaft by axle.
Slip ring is arranged on cutter shaft, for by the force transmission of rubber spring to cutter shaft; Due in carrying out side clearance adjustment process, between slip ring and bearing, can exist and slide, therefore, material selection bronze or the self-lubricating material of slip ring.
The utility model, by adopting rubber spring cutter shaft directly to be applied to the mode of pretightning force, overcomes the gap of the inside and outside circle of bearing, thereby eliminates the impact on cutterhead lap and side clearance adjustment; The large damping characteristic having by rubber spring self, reduces the impact in production process simultaneously, plays the effect of damping, buffering; Also reduce the required precision to bearing, when reaching and reducing costs, improved the use of circle shear and the object of degree of regulation.
Accompanying drawing explanation
Fig. 1 is cutting of circle shear cutting apparatus schematic diagram;
Fig. 2 is cutter shaft radial limiting device application schematic diagram of the present utility model;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is cutter shaft radial limiting device body schematic diagram of the present utility model;
Fig. 5 is the left view of Fig. 4.
In figure: 1-1 is locking device, 1-2 is pressure head, and 1-3 is upper cutter shaft assembling, and 1-4 is side clearance positioner, and 1-5 is upper tool post, and 1-6 is pre-tightening apparatus, and 1-7 is lap positioner, and 1-8 is lower cutter shaft assembling, and 1-9 is frame;
2-1 is side clearance positioner, and 2-2 is the first cylinder roller bearing, and 2-3 is broach shell, and 2-4 is cutter shaft, and 2-5 is cutter shaft radial limiting device, and 2-6 is slip ring, and 2-7 is the second cylinder roller bearing, and 2-8 is cutterhead, and 2-9 is pre-tightening apparatus;
3-1 is screw, and 3-2 is pressing plate, and 3-3 is cylindrical rubber spring, and 3-4 is back shaft, and 3-5 is locking nut, and 3-6 is bearing, and 3-7 is axle.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 1 to Figure 2, under circle shear off working state, the first cylinder roller bearing 2-2 and the second cylinder roller bearing 2-7 due to supporting cutter shaft 2-4, between its inner ring and outer ring, exist gap, therefore, cutter shaft 2-4 is under the effect of gravity, in hang, above the gap of the inside and outside circle of bearing comes across; In when cutting strip steel through rotary shears, because cutterhead 2-8 is subject to shearing force upwards, and pass to cutter shaft 2-4, making cutter shaft 2-4 take the first cylinder roller bearing 2-2 is fulcrum, upwards lift, below the gap of the inside and outside circle of the second cylinder roller bearing 2-7 comes across, thereby cause side clearance and lap that change has occurred, and then had influence on the quality of shearing;
A kind of disc scissors axle radial limiting device, described stopping means comprises screw 3-1, pressing plate 3-2, cylindrical rubber spring 3-3 and back shaft 3-4 from bottom to up successively, at back shaft upper surface, also there is bearing 3-6, axle 3-7 and locking nut 3-5 fix bearing 3-6, slip ring 2-6 on circle shear cutter shaft, slip ring is corresponding with the position of bearing.
As shown in Figures 3 to 5, after having increased cutter shaft radial limiting device, cylindrical rubber spring 3-3 by back shaft 3-4 and on bearing 3-6 by the force transmission making progress to slip ring 2-6, slip ring by force transmission to cutter shaft 2-4, make circle shear under off working state, it is fulcrum that cutter shaft 2-4 be take the first cylinder roller bearing 2-2, upwards lift, below the gap of the inside and outside circle of the second cylinder roller bearing 2-7 appears at all the time, thereby no matter in working order or off working state make circle shear, cutterhead is all in a fixing position.
Claims (3)
1. a disc scissors axle radial limiting device, is characterized in that: described stopping means comprises screw, pressing plate, cylindrical rubber spring and back shaft from bottom to up successively, at back shaft upper surface, also has axle, and axle and locking nut are fixed bearing.
2. disc scissors axle radial limiting device as claimed in claim 1, is characterized in that: described device also comprises the slip ring being arranged on circle shear cutter shaft, and slip ring is corresponding with the position of bearing.
3. disc scissors axle radial limiting device as claimed in claim 2, is characterized in that: described slip ring adopts bronze or self-lubricating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407970.9U CN203992612U (en) | 2014-07-23 | 2014-07-23 | Disc scissors axle radial limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407970.9U CN203992612U (en) | 2014-07-23 | 2014-07-23 | Disc scissors axle radial limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203992612U true CN203992612U (en) | 2014-12-10 |
Family
ID=52032676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420407970.9U Active CN203992612U (en) | 2014-07-23 | 2014-07-23 | Disc scissors axle radial limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203992612U (en) |
-
2014
- 2014-07-23 CN CN201420407970.9U patent/CN203992612U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |