JPH08150548A - Surface grinding method of long metal plate material - Google Patents

Abstract

PURPOSE: To perfectly restrain growth of lug parts on both end sides of a grinding roll at the time of carrying out surface grinding work of a long metal plate material by making a radius of a central part at the time of abrasion larger than a lug part radius after grinding and removing the lug part of the grinding roll and making its difference smaller than thickness of the long metal plate material. CONSTITUTION: Both end side lug parts of an abrased grinding roll 1, that is, a part where a long metal plate material does not pass is ground by driving a lug removing grinding tool driving motor 16 by way of giving a movement order to lug removing grinding tool lateral movement devices 21, 21 so that head end parts of grinding tools 14, 14 for grinding roll lug removal come to the both end side lug parts of the abrased grinding roll 1. At this time, when it is specified that a central part radius at the time when a central part of the grinding roll 1 is abrased due to grinding work of the long metal plate material 3 is R7 , a lug part radius after grinding and removing a lug part of the grinding roll 1 is S, and thickness of the long metal plate material 3 is (t), S is smaller than R7 and a difference of R7 and S is smaller than (t).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface grinding method for a long metal plate material.

[0002]

2. Description of the Related Art When manufacturing a composite metal plate material, a long metal plate material, which is a raw material for the composite metal plate material, is subjected to a rolling process, and then the surface thereof is polished or ground.

FIG. 4 is a front view showing a conventional method for grinding the surface of a long metal plate.

In FIG. 4, 1 is a grinding roll, 2 is ears generated at both ends of the grinding roll 1, 3 is a material to be ground, that is, a long metal plate material, 4 is a receiving roll, and 5 is a receiving roll on both sides. The damaged part.

Here, the grinding roll 1 can be rotated by a drive motor or the like and has a diameter of 300.
Abrasive grains are adhered to the outer peripheral surface of the same with a diameter of about mm through an adhesive.

Further, the receiving roll 4 is adapted to be freely rotatable, and may be a roll made of all rubber or a metal roll whose outer circumference is covered with rubber.

In the conventional surface grinding method for a long metal plate material as shown in FIG. 4, when the surface grinding work is performed on the long metal plate material 3, it is fixed to the outer peripheral surface of the grinding roll 1 with an adhesive. The abrasive grains that are worn also wear out. This grinding roll 1
Since the abrasion occurs only in the central area where the long metal plate 3 passes, the non-wearing portions, that is, the ears 2 and 2 occur on both ends of the grinding roll 1 through which the long metal plate 3 does not pass.

On the other hand, in the grinding roll 1, even if the central region of the grinding roll 1 is abraded by the passage of the long metal plate material 3, the receiving roll 4
Since the grinding is continued while sandwiching the long metal plate material 3 between and, the ear rolls 2, 2 generated on both end sides of the grinding roll 1 cause damage to the receiving roll damage portions 5 on both end sides of the receiving roll 4, respectively. 5 occurs.

Conventionally, the work of removing the ears 2, 2 generated at both ends of the grinding roll 1 has been performed by the following methods (1) to (4).

(1) After finishing the grinding work of the long metal plate 3,
A method of grinding and removing the ears 2, 2 generated at both ends of the grinding roll 1 by using a grinding tool or the like.

(2) A method of performing a grinding operation using the grinding roll 1 having a roll width narrower than the width of the long metal plate 3 in order to prevent the ears 2, 2 from being generated at both ends of the grinding roll 1. (3) A method of constantly removing the entire surface of the grinding roll 1 using a grinding tool when grinding the long metal plate material 3.

(4) A method of removing the ears generated at both ends of the grinding roll using a grinding tool for ears periodically during the grinding work.

However, the conventional methods of the above (1) to (4) have the following problems.

The method (1) is such that after the grinding work, the ears 2,
Since the removal work of No. 2 is performed, the facility operation rate deteriorates,
The receiving roll 4 is damaged. In addition, long metal plate material 3
Whenever the width of the roll changes, the receiving roll 1 must be converted. At the time of this replacement, the receiving roll 1 will be discarded as a consumable item.

In the method (2), an unground portion is generated in the long metal plate material 3, and the product yield is reduced.

In the method (3), since the entire surface of the grinding roll 1 is constantly ground, unevenness or the like occurs on the surface of the long metal plate material 3, and the appearance state becomes unstable.

In the method (4), the state of the grinding roll 1 has to be constantly checked, and the workability deteriorates.

[0018]

SUMMARY OF THE INVENTION The present invention has been made in view of such a point, and the purpose thereof is to solve the above-mentioned drawbacks of the prior art and to perform surface grinding work on a long metal plate material. Occasionally, it is possible to completely prevent the occurrence of ears on both ends of the grinding roll, and thereby to prevent the occurrence of roll damage on both ends of the receiving roll, resulting in a marked increase in grinding workability and productivity. It is intended to provide a surface grinding method for a long metal plate material capable of performing the above.

[0019]

SUMMARY OF THE INVENTION The gist of the present invention is to continuously provide a long metal plate material having a width narrower than the width of the rotating roll and the receiving roll of a grinding machine. In the method of grinding the surface of the long metal plate material by passing the long metal plate material, the radius of the central part when the central part of the grinding roll is worn by the grinding operation of the long metal plate material is R ₇ , and the ear of the grinding roll. Grinding and removing the ears of the grinding roll so that S <R ₇ (R ₇ −S) <t, where S is the radius of the ears after grinding and removing the part, and t is the thickness of the long metal plate material. The surface grinding method of the long metal plate material is characterized by grinding the surface of the long metal plate material.

[0020]

According to the surface grinding method for a long metal plate material of the present invention, a long metal plate material having a width narrower than the width of both rolls is continuously passed between the rotating grinding roll and the receiving roll of the grinding device. In the method for grinding the surface of a long metal plate material, the radius of the central portion when the central portion of the grinding roll is worn by the grinding operation of the long metal sheet material is R ₇ , and the ear after the grinding portion is removed by grinding. When the part radius is S and the thickness of the long metal plate is t, the surface of the long metal plate is ground while removing the ears of the grinding roll so that S <R ₇ (R ₇ −S) <t. Since the grinding roll does not have ears, the receiving roll meshing with it does not suffer roll damage due to ears.
As a result, the durability of both rolls can be increased, the replacement frequency can be significantly reduced, and the productivity of long metal plate material grinding can be significantly improved.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the surface grinding method for a long metal plate according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective explanatory view showing an embodiment of a surface grinding method for a long metal plate material according to the present invention.

FIG. 2 is a partially enlarged explanatory view of FIG.

1 and 2, 1 is a grinding roll, 3
Is a long metal plate material, 4 is a receiving roll, 14 and 14 are grinding tools for grinding roll selvedges, 15 is a grinding roll cutting amount, 16 is a selvage grinding tool drive motor, 17 is a long metal plate material width detection limit switch, 18 is a depth detection encoder, 1
Reference numeral 9 is a grinding roll pressing-down raising drive motor, 20 is a grinding roll pressing-down raising moving distance detection encoder, and 21 is a selvage grinding tool lateral movement device.

Now, when the grinding work is performed while continuously feeding the long metal plate 3 between the grinding roll 1 and the receiving roll 4 of the apparatus of FIG. 1, the grinding roll 1 through which the long metal plate 3 passes Since the central portion is worn, the grinding roll pressure-reducing drive motor 19 reduces the pressure by a predetermined amount so as to approach the receiving roll 4.

When the grinding roll 1 is pressed down by a predetermined amount in this way, the rolling-down moving distance is detected by the grinding-roll pressing-down moving distance detecting encoder 20.

As described above, in the conventional surface grinding method for a long metal plate material, when the surface grinding work is performed on the long metal plate material 3, both ends of the grinding roll 1 through which the long metal plate material 3 does not pass. Non-wearing parts, that is, ears 2, 2 are generated, and further, ears 2, 2 generated on both end sides of the grinding roll 1 generate receiving roll damage parts 5, 5 on both end sides of the receiving roll 4, respectively. .

In the present invention, both ends of the grinding roll 1 are tracked while following the wear amount of the central portion of the grinding roll 1 through which the long metal plate 3 passes so that the ears 2 and 2 are not formed on both ends of the grinding roll 1. It is characterized in that the side is continuously ground.

Here, in order to continuously grind both end sides of the grinding roll 1 while following the wear amount of the central portion of the grinding roll 1 through which the long metal plate 3 passes, as shown in FIG. It is necessary to accurately calculate the outer peripheral position P _{13 of} 1.

In FIG. 3, 1 is a grinding roll whose outer circumference is not worn, 1'is a grinding roll whose outer circumference is worn by grinding work, 3 is a long metal plate, 4 is a receiving roll, and 6 is the outer circumference is worn. Radius R ₆ and 7 of the grinding roll 1 is the radius R ₇ and 8 of the grinding roll 1 ′ whose outer circumference is worn. R is the radius R ₇ and 8 of the grinding roll 1 whose outer circumference is not worn and the grinding roll 1 ′ whose outer circumference is worn.
The moving distance M ₈ between the center position of the grinding roll 1 (moving distance due to wear of the outer circumference of the grinding roll 1), 9 is the distance K ₉ between the grinding roll 1 ′ and the grinding roll ear grinding tool 14, and the outer circumference is worn. The circle center positions 0 ₁₀ and 11 of the prepared grinding roll 1 ′ are the circle center positions 0 ₁₁ and 12 of the grinding roll 1 whose outer periphery has not been worn, and the distance K between the long metal plate 3 and the grinding roll ear-grinding tool 14. ₁₂ and 13 are outer peripheral positions P ₁₃ of the grinding roll 1.

R ₇ of the grinding roll 1 ′ whose outer circumference is worn is calculated by the equation (1).

R ₇ = R ₆ −M ₈ Equation (1) Further, the outer peripheral position P ₁₃ of the grinding roll 1 ′ is calculated by Equation (2).

P ₁₃ = √ (R ₇ −10 ₁₀ ) (2) Formula In the present invention, the above calculation is performed by a sequencer device (not shown), and based on the result of the calculation, the sequencer device causes the grinding roll ear grinding tool. A movement command is issued to the edge picking grinding tool lateral movement devices 21, 21 so that the tip ends of 14, 14 come to the both-end side ears 2, 2 of the worn grinding roll 1 '.
The both ends 2 of the worn grinding roll 1 ′, that is, the portion where the long metal plate 3 does not pass is ground by driving the edge picking tool driving motor 16.

At this time, the radius S of the both ends 2 and 2 after grinding is set as in the equation (3) when the thickness of the long metal plate member 3 is t.

S <R ₇ (3) Formula (R ₇ −S) <t (4) Formula Next, the both ends of the grinding roll 1 ′ worn by the actual grinding roll selvage grinding tools 14, 14 The grinding work of the parts 2 and 2 will be further described.

First, the grinding roll 1 whose outer periphery is not worn
When the surface of the long metal plate material 3 is ground by means of the above, the outer circumference of the grinding roll 1 is abraded and becomes a worn grinding roll 1 '.

Along with this, the grinding roll 1'is driven down by the grinding roll pressure-raising drive motor 19 by an amount corresponding to the amount of wear.

Next, this reduction movement distance is the movement distance M ₈ of the center position between the grinding roll 1 whose outer circumference is not worn and the grinding roll 1'whose outer circumference is worn (the movement accompanying the outer wear of the grinding roll 1). Distance), and this M ₈ is detected by the grinding roll roll-down rise travel distance detection encoder 20.

Next, the pressure moving distance peripheral position P ₁₃ of M ₈ is calculated by the sequencer device (not shown) the grinding roll 1 '(2) was calculated using the further the P ₁₃
The distance K ₉ between the grinding roll 1 ′ and the grinding roll selvage grinding tool 14 and the distance K ₁₂ between the long metal plate 3 and the grinding roll selvage grinding tool 14 are calculated.

Next, the sequencer device issues a movement command to the edge-moving grinding tool lateral movement devices 21, 21 to cause the grinding roll edge-grinding grinding tools 14, 14 to wear on the respective edge portions 2, 2 of the grinding roll 1 '. After that, the both ends 2 of the worn grinding roll 1 ', which are not passed by the long metal plate 3, are ground by driving the edge-grinding tool driving motors 16, 16. At this time, the grinding width of the both ends 2 and 2 is controlled by the long metal plate material width detection limit switch 17.

The surface grinding method for a long metal plate according to the present invention is
By doing in this way, it is possible to completely prevent the generation of ears on both end sides of the grinding roll, thereby suppressing the generation of roll damage parts on both end sides of the receiving roll, and as a result, to improve the grinding workability and productivity. It can be significantly increased.

[0042]

According to the surface grinding method for a long metal plate material of the present invention, it is possible to completely prevent the generation of ears on both end sides of the grinding roll, and thereby the generation of roll damage portions on both end sides of the receiving roll. It can be suppressed and, as a result, the grinding workability, productivity and quality can be remarkably improved, and it is industrially useful.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing an embodiment of a surface grinding method for a long metal plate according to the present invention.

FIG. 2 is a partially enlarged explanatory view of FIG.

FIG. 3 is an explanatory diagram for calculating the moving distance of the grinding tool for the edge picking of the grinding roll in the embodiment of the surface grinding method for a long metal plate according to the present invention.

FIG. 4 is a front explanatory view showing an example of a conventional surface grinding method for a long metal plate material.

[Explanation of symbols]

1 Grinding roll when outer circumference is not worn 1'Grinding roll after outer circumference is worn 2 Ear part 3 Long metal plate material 4 Receiving roll 5 Damaged part 6 Radius R ₆ 7 of grinding roll 1 whose outer circumference is not worn Radius R ₇ 8 of grinding roll 1 ′ whose outer circumference is worn Out of the grinding roll 1 whose outer circumference is not worn and grinding roll 1 ′ whose outer circumference is worn M ₈ 9 The grinding roll 1 ′ whose outer circumference is worn Grinding roll Distance from the edge of grinding tool 14 for ear picking K ₉ 10 Circle center position of grinding roll 1 ′ whose outer circumference is worn 0 ₁₀ 11 Circle center position of grinding roll 1 whose outer circumference is not worn 0 ₁₁ 12 Long metal Plate 3 and grinding roll 14
Distance K ₁₂ 13 Periphery position of grinding roll 1 P ₁₃ 14, 14 Grinding roll Grinding tool for edge picking 15 Grinding roll cutting amount 16 Ear picking grinding tool drive motor 17 Long metal plate width detection limit switch 18 Cutting depth detection Encoder 19 Grinding roll pressure rise drive motor 20 Grinding roll pressure rise moving distance detection encoder 21 Ear pick grinding tool lateral movement device

Claims (2)

[Claims] 1. A surface of a long metal plate is ground by continuously passing a long metal plate having a width narrower than the width of both rolls of a grinding machine and a receiving roll. In the method described above, the radius of the central portion when the central portion of the grinding roll is worn by the grinding operation of the long metal plate material is R ₇ , the radius of the ear portion of the grinding roll after removal by grinding is S, and the length is When the thickness of the lengthy metal plate material is set to t, the surface of the long length metal plate material is ground while the ear portion of the grinding roll is ground and removed so that S <R ₇ (R ₇ −S) <t. A method for grinding the surface of a long metal plate material. Wherein the grinding roll wear outer periphery of the grinding roll in accordance with going to grinding the surface of elongated metal sheet, the moving distance M ₈ grinding roll pressure increase movement accompanied not the grinding rolls has pressure moving The detection signal is detected by a distance detection encoder, and the reduction movement distance M ₈ detection signal is input to a sequencer device to be operated to calculate the outer peripheral position P _{13 of} the grinding roll, the distance K ₉ between the grinding roll and the grinding roll ear picking tool, and The distance K ₁₂ between the long metal plate and the grinding roll edge picking grinding tool is calculated, and then the sequencer device issues a movement command to the edge picking tool lateral movement device to make the grinding roll ear picking grinding tool. 2. The surface grinding method for a long metal plate material according to claim 1, wherein the grinding is carried out by moving to both ends of the grinding roll.