TWI537076B - Method for calculating an gap between rolls - Google Patents

Description

Roller opening calculation method

The invention relates to a method for calculating the opening degree of a roller.

Continuous Caster is a metal casting equipment that uses continuous casting technology. The continuous casting machine directly solidifies and rolls the liquid molten metal into a metal foil through a plurality of roller turrets. The roller table used in the continuous casting machine comprises a hydraulic cylinder, an upper roller and a lower roller, wherein the hydraulic cylinder drives the upper roller to be rolled downward to be located between the upper roller and the lower roller. The metal is rolled into a thin sheet.

Current roller turrets use sensors to sense the position of the upper roller as a basis for calculating the opening between the rollers. However, this sensor can only measure the stroke of the hydraulic cylinder, and the actual opening between the upper roller and the lower roller cannot be known. Therefore, it is necessary to manually drill into the roller set to adjust the gauge to calculate the actual opening according to the value on the sensor. However, the space inside the roller set is narrow, and the measurement value reading is not easy, resulting in an increase in the front working time of the roll table.

Therefore, there is a need for a roller opening calculation method for calculating the opening value between the rollers.

One aspect of the present invention is to provide a roll opening calculation method for performing correction of a roll table using a standard block gauge to shorten the time required for roll table calibration.

According to an embodiment of the present invention, the roll opening calculation method includes an opening setting stage and an online measuring stage. In the opening setting phase, a standard block gauge is first provided. Then, the standard block gauge is placed between the roller and the lower roller above the roller table. Next, a fixed pressure is applied to the upper roller to lower the upper roller to the standard block gauge. Then, when the upper roller is pressed down to the standard block gauge, the block gauge opening value measured by the roller table is obtained. Next, the first parameter is calculated, wherein the first parameter (a) is expressed as follows: Where R _Location is the position sensing range of the roll table; R _signal is the sensing signal output range of the roll table.

Then, the second parameter is calculated, wherein the second parameter (b) is expressed as follows: Where Hs is the height of the standard block gauge; Gs is the block gauge measurement opening value.

Next, an online measurement phase is performed. In the on-line measurement stage, the roll table is first used to roll the material on the line, and the measured opening value corresponding to the line material is obtained. Then, use the following equation to obtain the actual opening value corresponding to the material on the line: Ga = Gm × a + b

Where Ga is the actual opening value; Gm is the measured opening value measured by the roller table; a is the first parameter; b is the second parameter.

It can be seen from the above description that the roller opening calculation method of the embodiment of the present invention uses a standard block gauge to provide parameters required for the linear equation, and uses the linear equation to calculate the actual opening value of the roller table, thereby reducing The front working time of the roller table.

100‧‧‧ Roller opening calculation method

110‧‧‧ opening setting stage

111‧‧‧Provisional steps

112‧‧‧Block gauge setup steps

113‧‧‧Under pressure step

114‧‧‧Value reading step

115‧‧‧Parameter calculation steps

120‧‧‧Online measurement phase

122‧‧‧ Online operation steps

124‧‧‧ Actual opening value calculation steps

200‧‧‧ Roller table

210‧‧‧ Lower roller

220‧‧‧Upper roller

230‧‧‧Control system

300‧‧‧Standard block gauge

310‧‧‧Base

312‧‧‧ lower surface

314‧‧‧Slip corners

320‧‧‧ columnar body

322‧‧‧ upper surface

Hs ‧ ‧ standard block height

The above and other objects, features, and advantages of the present invention will become more apparent and understood. A schematic flow chart of a method for calculating a roller opening degree according to an embodiment of the present invention.

Figure 2 is a schematic view showing the structure of a roller table according to an embodiment of the present invention.

Figure 3 is a block diagram showing the structure of a standard block gauge according to an embodiment of the present invention.

Please refer to FIG. 1 and FIG. 2 simultaneously. FIG. 1 is a schematic flow chart showing a method for calculating the opening degree of the roller according to an embodiment of the present invention, and FIG. 2 is a view showing a roller for calculating the opening degree of the roller opening 100. Schematic diagram of the structure of the engine platform 200. The roller opening degree calculation method 100 includes an opening degree setting stage 110 and an on-line measurement stage 120. The opening setting stage 110 is used to calculate the parameters required for the linear equation, and the online measuring stage 120 applies this linear equation to calculate the opening degree of the roll table 200 when working on-line.

In the opening degree setting stage 110, a block gauge providing step 111 is first performed to provide a standard block gauge 300 as shown in FIG. The standard block gauge 300 includes a base 310 and a columnar body 320. The base 310 has a lower surface 312 and a non-slip corner 314. The outer surface of the lower surface 312 is shaped to match the outer shape of the lower roller 210. In the present embodiment, the lower roller 210 is shaped like a circular arc, so that the outer surface 312 has a circular arc shape. The arcuate lower surface 312 and the non-slip corners 314 prevent the standard block gauge 300 from sliding when the upper roller 220 is depressed down to the standard gauge 300, thus allowing the upper roller 220 to align with the standard gauge block 300. The columnar body 320 is disposed on the base 310 and has an upper surface 322. The outer surface of the upper surface 322 is shaped to match the outer roller 220. In the present embodiment, the upper roller 220 is shaped like a circular arc, so that the outer surface 322 has a circular arc shape. The arcuate upper surface 322 acts like the lower surface 312 and will not be described again. Hs cylindrical body 320 has a height, in the embodiment of the present invention, the height Hs This may be considered the height of the standard block gauge 300.

After the block providing step 111, a block gauge setting step 112 is then performed to set the standard block gauge 300 between the lower roller 210 and the upper roller 220. In the present embodiment, the standard block gauge 300 is disposed on the lower roller 210 by means of the base 310. Since the base 310 has a circular arc-shaped lower surface 312 and a non-slip corner 314, the standard block gauge 300 can be stably disposed on the lower roller 210 without slipping.

After the block gauge setting step 112, a pressing step 113 is then performed to apply a fixed pressure to the upper roller 220 to lower the upper roller to the standard gauge 300. Then, a value reading step 114 is performed to read the value measured by the roll table 200, which represents the measured opening value corresponding to the block gauge 300. In an embodiment of the invention, the value reading step 114 can be performed manually. Performing, or using a machine to measure the signal output by the roll table 200 to obtain the electronic signal level corresponding to the measured opening value.

After the value reading step 114, a parameter calculation step 115 is then performed to calculate the parameters a and b required for the linear equation. The calculation formula for parameter a is as follows: Wherein R _Location is the position sensing range of the roll table 200; R _signal is the sensing signal output range of the roll table. For example, when the roll table 200 can sense the displacement of the upper roller 220 between 0 and 10 cm, and the corresponding output signal has a value ranging from 0 to 100, a is 1/10.

The formula for calculating parameter b is as follows:

Where Hs is the height of the standard block gauge and Gs is the block gauge measurement opening value.

Next, an online measurement phase 120 is performed. In the on-line measurement stage 120, an online operation step 122 is first performed to roll the material on the line (for example, a steel blank) using the roll table 200, and obtain the measured opening value corresponding to the material on the line. Then, an actual opening value calculation step 124 is performed to calculate the actual opening value corresponding to the material on the line using the following linear equation: Ga = Gm × a + b

Where Ga is the actual opening value corresponding to the material on the line; Gm is the measured opening value measured by the roller table.

As can be seen from the above description, this embodiment uses a standard gauge block to calculate a line. The parameters required for the equation of interest, and then use this linear equation to calculate the actual opening value of the material on the line, so that it is not necessary to manually measure the actual opening between the rollers in the roller set, and greatly reduce the need for the front operation. time.

In addition, the roller opening degree calculation method 100 of the embodiment of the present invention may be a computer program product suitable for the control system 230 of the roll table 200. For example, after the computer of the roll table 200 is loaded with the computer program product, the roll table 200 can perform the above-described roll opening calculation method 100. It is worth mentioning that the block gauge setting step 112 described above can be performed using manual or automated machinery.

While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

100‧‧‧ Roller opening calculation method

110‧‧‧ opening setting stage

111‧‧‧Provisional steps

112‧‧‧Block gauge setup steps

113‧‧‧Under pressure step

114‧‧‧Value reading step

115‧‧‧Parameter calculation steps

120‧‧‧Online measurement phase

122‧‧‧ Online operation steps

124‧‧‧ Actual opening value calculation steps

Claims (5)

A roller opening calculation method for calculating a roller opening degree of a roller table, wherein the roller opening calculation method comprises: performing an opening setting phase, comprising: providing a standard block gauge, wherein the standard block The gauge includes: placing the standard block gauge between the upper roller and the lower roller of the roller table; applying a fixed pressure to the upper roller to press the upper roller down to the standard block gauge; After the upper roller is pressed down to the standard block gauge, a gauge measurement opening value measured by the roller platform is obtained; and a first parameter is calculated, wherein the first parameter (a) is expressed as follows: Wherein R _{Location is a} position sensing range of the roller platform; R _signal is a sensing signal output range of the roller platform; and calculating a second parameter, wherein the second parameter (b) is expressed as follows: Where Hs is the height of the standard block gauge; Gs is the gauge gauge opening degree value; and performing an on-line measurement phase, comprising: using the roller turret to roll a line of material, and obtaining the corresponding material on the line a measured opening value; and using the following equation to obtain an actual opening value corresponding to the material on the line: Ga = Gm × a + b where Ga is the actual opening value; Gm is measured by the roller table The measured opening value; a is the first parameter; b is the second parameter. The method for calculating a roller opening degree according to claim 1, wherein the standard block gauge comprises: a base having a lower surface, wherein the outer surface of the lower surface is shaped to match a lower roller of the roller platform; And a columnar body disposed on the base, wherein the columnar body has an upper surface, and the outer surface of the upper surface is shaped to match the outer roller of the roller table. The method for calculating a roller opening degree according to claim 2, wherein the base of the standard block gauge has a non-slip corner. The roller opening calculation method according to Item 1, wherein the lower surface of the base and the upper surface of the column body are arc-shaped. The method for calculating the roller opening degree according to Item 1, wherein the material on the line is a steel embryo.