CN102962261B - Mounting and adjusting method for cone boxes of finishing mill group - Google Patents
Mounting and adjusting method for cone boxes of finishing mill group Download PDFInfo
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- CN102962261B CN102962261B CN201210481468.8A CN201210481468A CN102962261B CN 102962261 B CN102962261 B CN 102962261B CN 201210481468 A CN201210481468 A CN 201210481468A CN 102962261 B CN102962261 B CN 102962261B
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- cone
- cone case
- power shaft
- finishing mill
- adjustment
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Abstract
The invention discloses a mounting and adjusting method for cone boxes of a finishing mill group. In the mounting and adjusting process of the cone boxes of the finishing mill group, the concentricity of an input shaft of one cone box and an output shaft of the other cone box is adjusted according to the change relational expression of V=H=(0.706*Delta+0.002)-0.035, wherein Delta represents the thickness value of a gasket, and H and V respectively represent the horizontal offset and vertical offset of the input shaft of the cone box. The mounting and adjustment of the cone boxes can be guided by the relational expression determined by the thickness value of the gasket, the horizontal offset and the vertical offset of the input shafts of the cone boxes, so that the mounting and adjustment times of the cone boxes can be effectively reduced, the adjustment time is shortened, and the production cost is greatly reduced.
Description
Technical field
The present invention relates to precision rolling equipment technical field, specifically a kind of mm finishing mill unit cone case installation adjusting method.
Background technology
At present, the installation adjustment of mm finishing mill unit cone case, most empirical methods that adopt: remove cone case connecting bolt → adjustment spacer thickness → clamping cone case connecting bolt → measurement cone case I/O shaft concentricity, again adjust spacer thickness according to the data of measuring, operation is until cone case I/O shaft concentricity reaches installation requirement so repeatedly.Adopt this kind of method Shortcomings part to be:
1. accelerate the wearing and tearing of equipment, shorten life cycle.Because repeatedly repeat to remove/install the wearing and tearing that must cause equipment, thereby shorten the normal service life of equipment.
2. strengthened hand labor intensity.The each finishing mill taper box of adjustment is installed needs 1 to play heavy industry, 1 Suo of department work, 3 pincers worker; Cone case connecting bolt → adjustment spacer thickness → clamping cone case connecting bolt → measurement cone case I/O shaft concentricity operation is once removed in execution needs 2 hours, if adjustment spacer thickness is many or few, needs to repeat above-mentioned operation.Adopt empirical method to install and adjust minimum needs in triplicate, man-hour requirement is about 6 hours.Cone case of every adjustment just needs 5 workman's continuous operations 6 hours, if adjust ten cone casees, needs 5 workmans, works 60 hours.
Adjust operation if a cone case can reduce 1 time, more the time of adjusting so the case saving of ten cones just can create and exceed 440,000 economic benefits: 2 hours/time × 10 times × 110 tons/hour × 200 yuan/ton=440,000 yuan (hourly output, a ton steel profit are all conservative estimations).Therefore, the economic benefits of once losing 440,000 yuan of adjusting more.
For a long time, adopt empirical method for the installation adjustment of mm finishing mill unit cone case always, do not find a kind of effective method fundamentally to solve to repeat the problem of adjusting often, the adjustment time is long.
Summary of the invention
The object of this invention is to provide a kind of mm finishing mill unit cone case installation adjusting method, reduced the number of times of adjusting is installed, thereby shortened the time that whole installation is adjusted, greatly reduce production costs.
Solution of the present invention is: find out cone case and install and bore case I/O axle horizontal direction, vertical direction in adjustment process and move the variation relation between side-play amount and adjustment spacer thickness, thereby reduce, the number of times of adjusting is installed, is shortened the time that whole installation is adjusted.
The present invention is in mm finishing mill unit cone case installation adjustment process repeatedly, simulate actual adjustment process in conjunction with computer aided design software (Auto CAD), many groups random number is carried out to simulated experiment, while finding mm finishing mill unit cone case to install, bore the power shaft that connects between case and output shaft concentricity with the mobile Changing Pattern of adjusting cone case mounting seat spacer thickness, i.e. the variation relation formula of spacer thickness value (δ), cone case power shaft horizontal direction side-play amount (H) and vertical offset amount (V).
1, on cone case mounting seat A face, carry out pad adjustment:
1) in the time that cone case mounting seat A face increases pad, it is as shown in table 1 that cone case power shaft moves situation of change:
The table: ㎜ of 1(unit)
Compare with cone case power shaft original position, upwards skew for just, downwards for negative, left for being to bear just, to the right.
2) in the time that cone case mounting seat A face reduces pad, it is as shown in table 2 that cone case power shaft moves situation of change:
The table: ㎜ of 2(unit)
2. by carrying out the adjustment of pad on cone case mounting seat B face:
1) in the time that cone case mounting seat B face increases pad, it is as shown in table 3 that cone case power shaft moves changing value,
The table: ㎜ of 3(unit)
2), when cone case mounting seat B face reduces pad, it is as shown in table 4 that cone case power shaft moves changing value:
The table: ㎜ of 4(unit)
3. draw out the tendency chart that horizontal direction side-play amount H, vertical offset amount V change with spacer thickness value δ, as shown in Figure 6.
According to this tendency chart, can find out vertical offset amount V(or horizontal direction side-play amount H) form linear function with spacer thickness value δ.Suppose that this relation function equation is H=k* δ+b(k ≠ 0, and δ >0).
This function figure line passes through point (1,0.708), (1.5,1.061), and the group that establishes an equation is obtained slope k:
Solving equations obtains, k=0.706, b=0.002
The expression formula of this function is H=0.706* δ+0.002.
Can draw thus to draw a conclusion:
1. offset value closes and is: V=H=0.706* δ+0.002
When 2.A face increases pad, power shaft is upwards offset, simultaneously skew left;
When 3.A face reduces pad, power shaft offsets downward, simultaneously skew to the right;
When 4.B face increases pad, power shaft is upwards offset, simultaneously skew to the right;
When 5.B face reduces pad, power shaft offsets downward, simultaneously skew left;
In addition, consider the external factor such as bolt tightness is installed while adjustment, offset value is according to the practical operation experiential modification value of summarizing the experience out: Δ=0.035, V=H=(0.706* δ+0.002)-0.035.
The final spacer thickness value δ of determining with the relational expression of boring case power shaft horizontal direction side-play amount H, vertical offset amount V is: V=H=(0.706* δ+0.002)-0.035.
The present invention has advantages of compared with prior art: the spacer thickness value definite with the present invention instructs the installation adjustment of boring case with the relational expression of cone case power shaft horizontal direction side-play amount and vertical offset amount, can effectively reduce the installation of cone case and adjust number of times, shorten the adjustment time, thereby greatly reduce production costs.
Brief description of the drawings
Fig. 1 is mm finishing mill unit cone case scheme of installation.
Fig. 2 is mm finishing mill unit cone case mounting seat schematic diagram.
Fig. 3 adjusts pad schematic diagram.
Fig. 4 adjusts cone case mounting seat A face-power shaft concentricity to change schematic diagram.
Fig. 5 adjusts cone case mounting seat B face-power shaft concentricity to change schematic diagram.
Fig. 6 is cone case power shaft side-play amount and spacer thickness graph of a relation.
In figure: 1-cone case, 2-cone case power shaft, 3-collars, 4-cone case mounting seat, A-adjust large face, B-adjustment facet, δ-spacer thickness size.
Detailed description of the invention
Embodiment 1
Concentricity requirement between a certain cone case power shaft and another cone case output shaft: vertical direction within the scope of 0.2mm, horizontal direction is also within the scope of 0.2mm.Offset downward 1.7mm, horizontal direction and be offset 1.75mm to the right and actual cone case power shaft is vertical direction, adjusted pad and reach the requirement of this concentricity by method of the present invention.Adjust cone case mounting seat A face-cone case power shaft concentricity and change as shown in Figure 4, adjustment process is as follows:
The first step: actual cone case power shaft is that vertical direction offsets downward, and horizontal direction is offset to the right, so need to rectify and improve pad, to make to bore case power shaft be that vertical direction moves up, and horizontal direction is moved to the left, and therefore determines that needing, by adjustment, large face (that is: A face) is installed realizes.
Second step: according to relational expression: V=H=(0.706* δ+0.002)-0.035, the counter thickness of releasing pad:
1.7 =（0.706*δ
1+0.002）- 0.035 ①
1.75=（0.706*δ
2+0.002）- 0.035 ②
Can draw δ according to two relational expressions above
1≈ 2.45mm, δ
2≈ 2.53mm.Consider that concentricity requirement is that vertical, horizontal direction all, within the scope of 0.2mm, also exists certain variation space, therefore, can be assumed to 2.5mm by spacer thickness δ.
In the time of δ=2.5mm: according to relational expression V=H=(0.706* δ+0.002)-0.035 can calculate: V=H=1.6675mm, that is to say in the time being padded on A face with the thick pad of 2.5mm, cone case power shaft has all moved 1.6675mm upwards, left.Now:
Δ V=1.7-1.6675=0.0325mm (vertical direction is within the scope of 0.2mm)
Δ H=1.75-1.6675=0.0825mm (horizontal direction is within the scope of 0.2mm)
Therefore, can determine that spacer thickness δ is that 2.5mm is thick.
The 3rd step: the result drawing according to first, second step, we can reach at the thick pad of the adjustment large face of installation (that is: A face) upper increase 2.5mm the requirement of this concentricity.
Embodiment 2
Concentricity requirement between a certain cone case power shaft and another cone case output shaft: vertical direction within the scope of 0.2mm, horizontal direction is also within the scope of 0.2mm.And actual cone case power shaft to be vertical direction be upwards offset 1.7mm, horizontal direction is offset 1.5mm to the right, reach now the requirement of this concentricity by adjusting pad.Adjust cone case mounting seat B face-cone case power shaft concentricity and change as Fig. 5 institute, adjustment process is as follows:
The first step: actual cone case power shaft is that vertical direction is upwards offset, and horizontal direction is offset to the right, so need to rectify and improve pad, to make to bore case power shaft be that vertical direction moves down, and horizontal direction is moved to the left, and therefore determines that need to facet B face be installed by adjustment realizes.
Second step: according to relational expression: V=H=(0.706* δ+0.002)-0.035, the counter thickness of releasing pad:
1.7 =（0.706*δ
1+0.002）- 0.035 ①
1.5 =（0.706*δ
2+0.002）- 0.035 ②
Can draw δ according to two relational expressions above
1≈ 2.45mm, δ
2≈ 2.17mm.Consider that concentricity requirement is that vertical, horizontal direction all, within the scope of 0.2mm, also exists certain variation space, therefore, can be assumed to 2.35mm by spacer thickness δ.
In the time of δ=2.35mm: according to relational expression V=H=(0.706* δ+0.002)-0.035 can calculate: V=H=1.6261mm, that is to say that, when the spacer thickness that is padded on B face is reduced to 2.35mm when thick, cone case power shaft has all moved 1.6261mm downwards, left.Now:
Δ V=1.7-1.6261=0.0739mm (vertical direction is within the scope of 0.2mm)
Δ H=1.5-1.6261=-0.1261mm (illustrating now bore case power shaft has moved 0.1261mm left in the horizontal direction, and horizontal direction is also within the scope of 0.2mm)
Therefore, can determine that spacer thickness δ is that 2.35mm is thick.
The 3rd step: the result drawing according to first, second step, we can reach at the thick pad of adjustment installation facet (that is: B face) upper minimizing 2.35mm the requirement of this concentricity.
Claims (1)
1. a mm finishing mill unit cone case installation adjusting method, it is characterized in that in the installation adjustment process of mm finishing mill unit cone case, variation relation formula according to spacer thickness value δ, cone case power shaft horizontal direction side-play amount H and vertical offset amount V three: V=H=(0.706* δ+0.002)-0.035 bore case power shaft and another adjustment of boring concentricity between case output shaft, concrete grammar is as follows:
1) according to actual cone case power shaft Vertical Square side-play amount and horizontal direction side-play amount, with formula V=H=(0.706* δ+0.002)-0.035, the anti-thickness δ that releases pad;
2) by concentricity between thickness δ checking cone case power shaft and another cone case output shaft whether in adjusting range, the finally thickness δ of definite pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481468.8A CN102962261B (en) | 2012-11-23 | 2012-11-23 | Mounting and adjusting method for cone boxes of finishing mill group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481468.8A CN102962261B (en) | 2012-11-23 | 2012-11-23 | Mounting and adjusting method for cone boxes of finishing mill group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102962261A CN102962261A (en) | 2013-03-13 |
| CN102962261B true CN102962261B (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210481468.8A Expired - Fee Related CN102962261B (en) | 2012-11-23 | 2012-11-23 | Mounting and adjusting method for cone boxes of finishing mill group |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1385494A (en) * | 1972-01-27 | 1975-02-26 | British Steel Corp | Rolling mills |
| US3945234A (en) * | 1975-01-02 | 1976-03-23 | Rolf Steinbock | Tandem rolling mill arrangement |
| GB2271071B (en) * | 1992-09-21 | 1996-05-01 | Ishikawajima Harima Heavy Ind | Guiding apparatus for roughing mill and method of guiding rolled product |
| CN101733287B (en) * | 2009-12-17 | 2012-04-25 | 北京京诚之星科技开发有限公司 | Device for adjusting and positioning horizontal offset for working rollers of rolling mill |
| CN102688909B (en) * | 2012-05-16 | 2014-06-11 | 燕山大学 | Method for comprehensively setting clamp force of pinch roll on hot rolling reeling machine |
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2012
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