JPH0587513U - Universal horizontal roll side wear measuring instrument - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to easily and accurately measure the amount of side wear of a universal horizontal roll. A base 8 having a bottom surface capable of being attracted via a magnet 8-3 on a side surface of a universal horizontal roll side surface turning surface which does not come into contact with a material to be rolled, and a scale fixed in parallel with the axial direction of the base 8. It is composed of a member 7 and a range finder 6 which is mounted so as to be slidable in the length direction of the scale member 7 and measures the distance in the direction perpendicular to the length direction of the scale member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wear measuring instrument capable of easily and accurately measuring the amount of side wear of a universal horizontal roll.

[0002]

[Prior Art]

 In general, H-shaped steel, I-shaped steel, and the like use a universal rolling machine in which the axial centers of the left and right vertical rolls 2 and 3 and the upper and lower horizontal rolls 4 and 5 are on the same vertical plane as shown in FIG. Rolled and shaped like the material 1 to be rolled. In that case, as shown in FIG. 4, after rolling a certain amount, approximately half of the horizontal roll side surfaces 4a and 5a on the flange tip side (hereinafter, simply referred to as "flange tip contact area") 4a. The amount of wear of '5a' is extremely larger than that of the remaining half of the area, which is a rule condition for roll unit and product flange thickness accuracy. The reason why the wear of the flange tip contact area on the side of the horizontal roll is larger than that of the other half of the flange is because the flange tip has a very large relative velocity at the contact position. In other words, the sliding distance of the part that comes in contact with the vicinity of the flange of the material to be rolled is the largest, and this is affected by pressure distribution, temperature distribution, etc., and the horizontal roll side surface wear pattern shown in Fig. 4 appears. is there. For this reason, the local wear in the regions 4a 'and 5a' on the side surface of the horizontal roll is a rule condition for the roll unit, and the wear measurement accuracy is extremely important in roll management. The reason will be described below.

The wear of the universal horizontal roll is greatest on the side surface, but since it cannot be used any more in the worn state, the wear surface (solid line) is turned to flatten the side surface as shown in FIG. In this state (broken line), it prepares for the next rolling. In this case, if the maximum wear depth on the side of the roll is δ1 and δ2 on the left and right sides of the horizontal roll, the roll width is reduced by (δ1 + δ2), so the roll radius is Δr = (δ1 + δ2) / (2 Even if only sin α) is removed, it will be returned to the original body width w. At this time, since Δr is usually larger than the wear amount δ3 of the web surfaces 4b and 5b, the decrease amount of the roll diameter is regulated by the roll side wear δ1 and δ2.

On the other hand, since the roll basic unit is proportional to the roll diameter reduction amount Δr, it is necessary to measure δ1 and δ2 with high accuracy and to keep Δr to a necessary minimum. Normally, the side surface angle α of the horizontal roll is 6 to 8 ° in the intermediate universal mill, so if there is an error in measuring the wear amounts δ 1 and δ 2, the error in the radius scraping amount Δr The value is about 7 to 10 times greater, and the effect of this error on the roll basic unit and roll turning efficiency is significant. Further, when specifically optimizing the roll material and roll lubrication conditions, it is important to understand the actual wear pattern accurately and statistically.

Generally, in measuring the amount of wear on the side surface of the horizontal roll, as shown in FIG. 6, a measuring instrument having a dial gauge 10 attached to a tip 9a of a square block 9 is used to measure the maximum wear of the tracing stylus 10a of the dial gauge 10. While making contact in the vicinity of the portion 4a ', the length direction of the rectangular block is aligned with the radial direction of the roll, and the bottom surface 9b of one of the tips is worn without contact with the material to be rolled among the side surfaces of the universal horizontal roll. The measurement was performed by pressing against the non-existing portion 4c. At this time, the maximum indication value of the dial gauge 10 is read while sliding the square block slightly in the roll radial direction. The difference between this indicated value and the value measured in the same manner on the flat surface plate was used as the roll wear amount δ, and roll turning was performed based on this measured value.

However, the radial distance of the horizontal roll side non-wear part 4c is only about 30 to 100 mm, and the measurer presses the bottom surface of the tip end of the square block against this surface to indicate the dial gauge 10. Since the value is read, there is a problem that workability is poor and measurement error is likely to occur. Further, depending on the diameter of the roll or the size of the material to be rolled, the end 9E of the square block interferes with the arbor 11 of the roll, so that it is necessary to prepare square blocks having several lengths.

[0007]

The present invention has been made in view of such problems, and it is possible to easily and accurately measure the side wear amount of a universal horizontal roll at a site where the roll is installed in a rolling mill. The purpose is to provide a wear measuring instrument that can be used.

[0008]

[Means for Solving the Problem and Its Action]

 The gist of the present invention is to provide a base portion having a suction surface that is detachable via a magnet on a side surface of a universal horizontal roll, a scale member fixed to the base portion in a direction parallel to the adhesive surface, and a length direction of the scale member. A side wear measuring instrument for a universal horizontal roll comprising a distance meter that measures the distance in a direction orthogonal to the length direction of the slidable length member.

Hereinafter, the device of the present invention will be described in more detail with reference to the drawings. In FIG. 1, a magnet 8c is installed inside the base portion 8, and the suction surface 8a on the bottom surface of the base portion 8 can be adsorbed on and released from the side surface of the horizontal roll by manual operation of the clamp 8b. There is. The shape of the suction surface 8a is divided into two legs 80, 80 as shown in FIG. 1 (c), and is formed into a gentle curved surface so that the suction surface 8a can be surely sucked onto the side surface of the horizontal roll.

Further, the scale member 7 is fixed in a direction parallel to the suction surface 8 a of the base portion 8, and the scale member 7 is provided with a scale of length. A distance meter 6 using a laser type displacement sensor for irradiating the horizontal roll 4 (5) with the laser beam 12 and measuring the distance from the reflected beam is provided on the scale member 7 by using a virtual line shown in FIG. 1 (b). It is slidably mounted in any range up to the position. The stopper 13 is attached to the tip of the scale member 7 and prevents the distance meter 6 from falling off.

FIG. 2 shows the state of wear measurement by the device of the present invention. First, the suction surface 8a of the base portion 8 is set to the non-wear portion 4c of the roll side surface so that the base axis a of the base portion 8 coincides with the roll radial direction. Then, the clamp 8b is operated to adsorb it. The non-wearing portion 4c on the side surface of the roll is a portion where the material to be rolled does not contact the side surface of the roll and the surface state before rolling is left as it is.

Next, the range finder 6 is slid in order from the boundary point S between the worn surface and the non-wear side in the roll radial direction toward the roll outer circumference E, and the value of the lateral position L of the range finder 6 is set to the scale member. At the same time, the distance S1 between the distance meter 6 and the wear surface is read from the indicated value of 7 and the displayed value of the distance meter 6, respectively. The difference δ = S1−S0 between this numerical value S1 and the value S0 similarly measured on the surface plate is the side surface wear amount measured in the target roll radial direction, and the maximum value of δ is the required turning amount.

The distance meter 6 in this embodiment uses a laser distance meter in order to obtain good workability and is not in contact with the worn surface of the roll, but it is a contact type using a dial gauge that has been conventionally used. Of course, it is also possible to use a rangefinder. Further, the measured values L, S0, and S1 may be electrically output and displayed on a digital indicator or captured in a recording device.

[0014]

【Example】

 In the embodiment of the present invention shown in FIG. 1, it is possible to measure the wear part (horizontal range of about 200 mm) of the horizontal roll of H400 × 400 size of wide H-section steel that needs to measure the wear surface in the widest range. Thus, the effective length M of the length member 7 was set to 200 mm. As a result, it is possible to measure a wide range of horizontal roll side face wear amount (about 70 mm to 200 mm in the radial direction) from the narrow width H-section steel to the wide width H-section steel with the same measuring instrument.

[0015]

[Effect of the device]

 The wear measuring instrument of the present invention is capable of performing universal horizontal roll side wear measurement with good workability and high accuracy while the roll is installed in the rolling mill, and the horizontal horizontal roll side roll wear pattern is also simple. It has a practical effect that it can measure with high accuracy, can take appropriate measures to reduce roll wear, and can prevent deterioration of roll unit due to conventional measurement error.

[Brief description of drawings]

1 is a schematic view showing the configuration of the device of the present invention, (a) is a plan view, (b) is a front view, and (c) is a side view.

FIG. 2 is a schematic front view showing a usage state of the device of the present invention.

FIG. 3 is a view showing a universal rolling condition of H-section steel.

FIG. 4 is an explanatory view of a horizontal roll wear pattern.

FIG. 5 is an explanatory diagram of a roll diameter reduction when a worn roll is turned.

FIG. 6 is an explanatory diagram showing a conventional horizontal roll side surface wear measuring method.

[Explanation of symbols]

 1 Material to be rolled 2,3 Universal vertical roll 4,5 Universal horizontal roll 6 Laser distance meter 7 Scale member 8 Base part 8a Base bottom 8b Detachable clamp 8c Magnet

Claims (1)

[Scope of utility model registration request] 1. A universal horizontal roll side surface having a base portion having a suction surface which is detachable via a magnet, a scale member fixed to the base portion in a direction parallel to the adhesive surface, and a length direction of the scale member. A lateral wear measuring instrument for a universal horizontal roll, comprising a range finder for measuring a distance in a direction orthogonal to a length direction of the slidable length member.