CN208303496U - A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling - Google Patents
A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling Download PDFInfo
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- CN208303496U CN208303496U CN201820813134.9U CN201820813134U CN208303496U CN 208303496 U CN208303496 U CN 208303496U CN 201820813134 U CN201820813134 U CN 201820813134U CN 208303496 U CN208303496 U CN 208303496U
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- wedge
- logarithmic spiral
- spiral curve
- roll
- waist
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Abstract
The utility model relates to a kind of logarithmic spiral curve cutting wedge roll shapes for splitting rolling, logarithmic spiral curve cutting wedge including cylindrical roll surface and the multiple tracks annular being arranged in an axially parallel mode along cylindrical roll surface, per pass logarithmic spiral curve cutting wedge are made of wedge bottom, wedge waist and wedge point；Wherein the cross section outer profile of wedge waist uses logarithmic spiral curve；The cross section outer profile of wedge point is arc, both ends and rounding off tangent with two sides wedge waist respectively, the top near linear of wedge point；The cross section outer profile at wedge bottom is arc, and both ends are tangent with cylindrical roll surface and wedge waist respectively and seamlessly transit.Logarithmic spiral curve is applied to during the splitting rolling of slab by the utility model, slitting roller with this roll shape is conducive to make that splitting rolling process is more stable and roll-force is smaller, the rate of depreciation of roll cutting wedge is slower, reduce roll change number, and then improves the effective operation time of the operation of rolling and the service life of roll.
Description
Technical field
The utility model relates to a kind of splitting rolling working roller more particularly to a kind of pairs for slab splitting rolling
Number spiral line type cutting wedge roll shapes, i.e., by the biggish blank splitting rolling of width at be used for profile, tube rod production width compared with
The logarithmic spiral curve cutting wedge roll shape of small blank.
Background technique
Splitting rolling is to make rolled piece strong during the rolling process using special slitting pass or auxiliary cutting means
While inhomogeneous deformation and induced spread, it is rolled into two or two adding with the equal or unequal rolled piece of upper section along longitudinal direction
Work technique.The technology is widely used in the hot rolling production of bar, wire rod, profile and steel billet.Using slit rolling process
The production specification of expansion blank and product that can be effective, reduces rolling pass, realizes one-heating forming, reduce energy consumption, give
Enterprise brings significant economic benefit.
Currently, most of cutting wedge shape of slitting roller all uses semicircle (such as used in the process of slab splitting rolling
What L3 cutting passage used in " a kind of slit rolling process " disclosed in the Chinese patent application No. is 201510368855.4 rolls
Roller) or it is trapezoidal, the roll of these shapes can guarantee the production efficiency of cutting slab and the quality of slab, but there is also
Certain disadvantage；First in process of production, the abrasion of roll cutting wedge is very fast, causes material base distribution between each line uneven
It is even, be reflected on blank be along its length change in size it is big, eventually lead to the finished section bar produced or tube rod size
Unevenly；Secondly roll-force is larger during splitting rolling, higher for the intensity requirement of rack and milling train, directly influences
The service life of milling train and roll.
Utility model content
The utility model provides a kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling, by log spiral
Type is applied to during the splitting rolling of slab, and the slitting roller with this roll shape is conducive to keep splitting rolling process more steady
Fixed and roll-force is smaller, and the rate of depreciation of roll cutting wedge is slower, reduces roll change number, and then improve having for the operation of rolling
Imitate the service life of activity duration and roll.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling, including cylindrical roll surface and along cylindrical roll surface
The logarithmic spiral curve cutting wedge for the multiple tracks annular being arranged in an axially parallel mode, per pass logarithmic spiral curve cutting wedge is by wedge bottom, wedge
Waist and wedge point composition；Wherein the cross section outer profile of wedge waist uses logarithmic spiral curve；The cross section outer profile of wedge point is arc,
Its both ends and rounding off tangent with two sides wedge waist respectively, the top near linear of wedge point；The cross section outer profile at wedge bottom is arc
Shape, both ends are tangent with cylindrical roll surface and wedge waist respectively and seamlessly transit.
Compared with prior art, the utility model has the beneficial effects that
1) it is all made of tangent rounding off between the wedge bottom of logarithmic spiral curve cutting wedge, wedge waist and wedge point, reduced
The mass defect of blank surface after splitting rolling, to improve the quality of finished section bar or tube rod；
2) wedge waist has certain convexity, allows wedge point metal inside crystal grain in stress mobile to wedge waist two sides, subtracts
The abrasion of roll is delayed, while roll-force reduces in the operation of rolling, is conducive to extend the service life of roll and milling train；
3) wedge point can slow down the rate of depreciation of wedge point, and then guarantee using large radius close to linear arc-shaped
The uniformity of be syncopated as billet size, while roll change frequency is reduced, increase effective operation time.
Detailed description of the invention
Fig. 1 is the roll structure schematic diagram using logarithmic spiral curve cutting wedge type described in the utility model.
Fig. 2 is the partial sectional view of Fig. 1.
Fig. 3 is the line style composition figure of logarithmic spiral curve cutting wedge described in the utility model.
In figure: 1. 2. blank of logarithmic spiral curve cutting wedge topping roll, 3. logarithmic spiral curve cutting wedge bottom roll 4.
The cylindrical roll surface of the sharp 7. logarithmic spiral curve cutting wedge 8. of 5. wedge waist of wedge bottom, 6. wedge
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling described in the utility model, including
The logarithmic spiral curve cutting wedge 7 of cylindrical roll surface 8 and the multiple tracks annular being arranged in an axially parallel mode along cylindrical roll surface 8, such as Fig. 2 institute
Show, per pass logarithmic spiral curve cutting wedge 7 is made of wedge bottom 4, wedge waist 5 and wedge point 6；The wherein cross section outer profile of wedge waist 5
Using logarithmic spiral curve；The cross section outer profile of wedge point 6 is arc, the both ends tangent and round and smooth mistake with two sides wedge waist 5 respectively
It crosses, the top near linear of wedge point 6；The cross section outer profile at wedge bottom 4 be arc, both ends respectively with cylindrical roll surface 8 and wedge
Waist 5 is tangent and seamlessly transits.
Log spiral is very common in living nature, and its isogonism characteristic makes it be widely used in each neck
Domain.Logarithmic spiral curve is applied in the cutting wedge roll shape of splitting rolling by the utility model.
As shown in figure 3, O1For the center of circle of basic circle, O2For polar origin.AB sections are logarithmic spiral curve cutting wedge 7
Wedge bottom, the BC sections of wedge waists 5 for logarithmic spiral curve cutting wedge 7, the CD sections of 1/2 wedge points 6 for logarithmic spiral curve cutting wedge 7.From
As can be seen that BC sections of contour line is log spiral in Fig. 3, the AB sections of rounding off curves for basic circle to BC sections, CD sections are
The BC sections of rounding off curves to sharp 6 vertex of wedge, each section of curve keep tangent geometrical relationship in junction.
In order to guarantee the wearability of wedge point 6, need the relatively larger of the arc radius setting of wedge point 6 making wedge point 6
Top is close to straight line, to be conducive to slow down its rate of depreciation.
It is the relevant parameter that can determine BC sections of log spirals, including initial polar diameter by the coordinate of convexity H and B, C point
ρ0, involute coefficient k, start polar angle θ1With end polar angle θ2, above-mentioned parameter is substituted into the polar equation of log spiral, i.e.,
It can obtain the beginning polar diameter ρ of required log spiral1With end polar diameter ρ2。
The parametric equation of log spiral are as follows: ρ=ρ0·ekθ
Its cartesian coordinate form are as follows:
In formula: ρ is polar diameter；ρ0For initial polar diameter；K is involute coefficient；θ is polar angle.
As shown in Figure 1, right using logarithmic spiral curve cutting wedge topping roll 1 and logarithmic spiral curve cutting wedge bottom roll 3
Blank 2 carries out splitting rolling, and volume under pressure determines as needed；Due to the isogonism characteristic of log spiral, slitting roller can be made to exist
Uniform force during splitting rolling, while can also slow down the rate of depreciation of wedge point 6, the roll-force in the operation of rolling is reduced,
To improve the efficiency and quality of splitting rolling.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (1)
1. a kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling, which is characterized in that including cylindrical roll surface and edge
The logarithmic spiral curve cutting wedge for the multiple tracks annular that cylindrical roll surface is arranged in an axially parallel mode, per pass logarithmic spiral curve cutting wedge are equal
It is made of wedge bottom, wedge waist and wedge point；Wherein the cross section outer profile of wedge waist uses logarithmic spiral curve；The cross section foreign steamer of wedge point
Exterior feature is arc, both ends and rounding off tangent with two sides wedge waist respectively, the top near linear of wedge point；Outside the cross section at wedge bottom
Profile is arc, and both ends are tangent with cylindrical roll surface and wedge waist respectively and seamlessly transit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820813134.9U CN208303496U (en) | 2018-05-29 | 2018-05-29 | A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820813134.9U CN208303496U (en) | 2018-05-29 | 2018-05-29 | A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208303496U true CN208303496U (en) | 2019-01-01 |
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ID=64715617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820813134.9U Expired - Fee Related CN208303496U (en) | 2018-05-29 | 2018-05-29 | A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208303496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637016A (en) * | 2018-05-29 | 2018-10-12 | 辽宁科技大学 | A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling |
-
2018
- 2018-05-29 CN CN201820813134.9U patent/CN208303496U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637016A (en) * | 2018-05-29 | 2018-10-12 | 辽宁科技大学 | A kind of logarithmic spiral curve cutting wedge roll shape for splitting rolling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190101 Termination date: 20210529 |