阅读说明：本技术 非接触式轧辊辊形在线检测装置及方法 (Non-contact type roller shape on-line detection device and method ) 是由 程巍 高红敏 张拥军 徐瀛杰 刘晶 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种非接触式轧辊辊形在线检测装置及方法,本装置中支腿垂直设于横梁的两端,定位底座设于支腿底端并且位于同一平面,导轨设于横梁底面,激光测距仪通过接杆设于导轨并且沿导轨滑移。本方法首先将检测装置的定位底座架设于轧辊两端的轴颈表面,并确保横梁与轧辊轴线平行；调整激光测距仪沿导轨滑移的距离,并覆盖轧辊的轴颈和辊面；设定轧辊两端的轴颈表面为激光测距仪检测的初始位置和末端位置以及轧辊参数；激光测距仪沿导轨滑移并检测距初始位置、轧辊辊面、末端位置的间距,根据轧辊已知参数以及激光测距仪测得的数据,得到轧辊辊形曲线。本装置及方法提高辊形在线检测效率及精度,降低检测成本,避免检测作业的安全隐患。(The invention discloses a non-contact type roller shape online detection device and a non-contact type roller shape online detection method. Firstly, erecting a positioning base of a detection device on the surfaces of shaft necks at two ends of a roller, and ensuring that a cross beam is parallel to the axis of the roller; adjusting the sliding distance of the laser range finder along the guide rail, and covering the shaft neck and the roll surface of the roll; setting the surfaces of the shaft necks at two ends of the roller as an initial position and a tail end position detected by a laser range finder and roller parameters; and the laser range finder slides along the guide rail and detects the distance from the initial position, the roll surface of the roll and the tail end position, and the roll shape curve of the roll is obtained according to the known parameters of the roll and the data measured by the laser range finder. The device and the method improve the online detection efficiency and precision of the roll shape, reduce the detection cost and avoid the potential safety hazard of detection operation.)

1. The utility model provides a non-contact roll shape on-line measuring device which characterized in that: this device includes crossbeam, landing leg, location base, guide rail and laser range finder, the landing leg is located perpendicularly the both ends of crossbeam, the location base is located the landing leg bottom is and be located the coplanar, the guide rail is located the crossbeam bottom surface, laser range finder locates through connecting the pole the guide rail slides and along the guide rail.

2. The non-contact roll shape on-line detecting device of claim 1, characterized in that: the device further comprises a driving mechanism, wherein the driving mechanism is arranged on the guide rail and drives the laser range finder to slide along the guide rail.

3. The non-contact roll shape on-line detecting device according to claim 1 or 2, characterized in that: the bottom surface of the positioning base is an arc surface or a V-shaped surface.

4. A non-contact type roller shape on-line detection method based on the detection device of any one of claims 1 to 3, characterized in that the method comprises the following steps:

step one, erecting a positioning base of a detection device on the surfaces of shaft necks at two ends of a roller, and ensuring that a cross beam is parallel to the axis of the roller;

adjusting the sliding distance of the laser range finder along the guide rail, and covering the shaft neck and the roll surface of the roll;

step three, setting the surfaces of the shaft necks at two ends of the roller to be the initial position and the tail end position of the laser range finder for slippage detection along the guide rail and setting the radius of the shaft necks at two ends of the roller to be D₀The radius of the roll surface of the roll is D_I；

Fourthly, enabling the laser range finder to slide along the guide rail and respectively detecting the distance between the initial position, the roller surface and the tail end position, and setting the distance between the initial positions obtained by measurement to be H_AThe distance between the roll surfaces of the rolls is H_IAnd the terminal position is H_B；

And step five, obtaining the following data according to the known parameters of the roller and the data measured by the laser range finder:

H_A+D₀＝H_I+D_I (1)

obtaining D from formula (1)_I＝H_A+D₀-H_I (2)

The formula (2) is the radius D of the roll surface of the roll_IAnd (4) measuring a roll shape equation of data relative to the laser distance meter, thereby obtaining a curve of the roll shape of the roll.

5. The non-contact roll shape on-line detection method according to claim 4, characterized in that: in the third step, when the journal radiuses of two ends of the roller are different or because the cross beam and the roller axis are not level, setting the initial position interval H_AAnd end position H_BUnequal, introducing an error variable Δ_I，

Then according to the known parameters of the roller and the data measured by the laser range finder, obtaining:

H_A+D₀+Δ_I＝H_I+D_I (3)

from formula (3) to obtain D_I＝H_A+D₀+Δ_I-H_I (4)

Wherein, Delta_IFor measuring the distance H between the roll surface and the initial position_ADistance H between plane and initial position_AAnd end position H_BThe distance between the connecting lines is set according to the distance,

setting the distance between the initial position and the tail end position to be L and the distance between the initial position and the detection point of the roller surface of the roller to be L_IThen, then

Obtained from formula (4) and formula (5):

and (6) the equation of the roll shape after being corrected, so that the roll shape curve of the roll is obtained when the shaft neck radiuses at two ends of the roll are different or the axes of the cross beam and the roll are not adjusted.

Technical Field

The invention relates to the technical field of detection, in particular to a non-contact type roller shape online detection device and method.

Background

In cold rolling production, the roll shape of a roll directly influences the quality of a plate shape, and the roll shape is one of key factors for controlling the quality of a cold-rolled automobile plate. With the requirement of improving the detection efficiency, the lightening, non-contact and online detection of the equipment become new requirements of roller detection,

in the roll shape detection field, "on-line" and "non-contact" are always difficult problems, and an instrument capable of measuring roll shape "off-line", such as a roll numerical control grinding machine with a roll shape measuring system, has the functions of high precision, semi-automation in the measuring process, data processing, storage and display, roll shape curve printing and the like, although the functions are more, the grinding machine cannot be moved, is inconvenient to be used as a measuring tool simply, and cannot realize on-line measurement. In order to solve the problem, portable roll shape measuring equipment is researched in all countries in the world, and a GX portable high-precision intelligent roll shape measuring instrument has the functions of data acquisition, processing, storage and display, roll shape curve printing and the like, but the GX portable high-precision intelligent roll shape measuring instrument uses four sensors, so that the cost of the equipment is high, and the operation is not convenient; in addition, displaying the measurement curve requires exporting data to a host computer. In addition, the DGX curve direct display type high-precision intelligent roller shape meter uses a single sensor, but is heavy in weight and not portable. Meanwhile, with the development of scientific technology, laser measurement technology, laser scanning technology and the like are widely applied in the detection field.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a non-contact type roller shape online detection device and method, which can avoid the inconvenience that a roller needs to be offline for detection and then online for installation, overcome the defects of low contact type measurement precision and hidden danger in the aspect of safe production of the traditional online roller shape detection, improve the roller shape online detection efficiency and precision, reduce the equipment maintenance workload, reduce the detection cost and avoid the potential safety hazard of detection operation.

In order to solve the technical problem, the non-contact type roller shape online detection device comprises a cross beam, supporting legs, a positioning base, a guide rail and a laser range finder, wherein the supporting legs are vertically arranged at two ends of the cross beam, the positioning base is arranged at the bottom ends of the supporting legs and is positioned on the same plane, the guide rail is arranged on the bottom surface of the cross beam, and the laser range finder is arranged on the guide rail through a connecting rod and slides along the guide rail.

Furthermore, the device also comprises a driving mechanism, wherein the driving mechanism is arranged on the guide rail and drives the laser range finder to slide along the guide rail.

Furthermore, the bottom surface of the positioning base is an arc surface or a V-shaped surface.

A non-contact type roller shape on-line detection method based on the detection device comprises the following steps:

step one, erecting a positioning base of a detection device on the surfaces of shaft necks at two ends of a roller, and ensuring that a cross beam is parallel to the axis of the roller;

adjusting the sliding distance of the laser range finder along the guide rail, and covering the shaft neck and the roll surface of the roll;

step three, setting the surfaces of the shaft necks at two ends of the roller to be the initial position and the tail end position of the laser range finder for slippage detection along the guide rail and setting the radius of the shaft necks at two ends of the roller to be D₀The radius of the roll surface of the roll is D_I；

Fourthly, enabling the laser range finder to slide along the guide rail and respectively detecting the distance between the initial position, the roller surface and the tail end position, and setting the distance between the initial positions obtained by measurement to be H_AThe distance between the roll surfaces of the rolls is H_IAnd the terminal position is H_B；

And step five, obtaining the following data according to the known parameters of the roller and the data measured by the laser range finder:

H_A+D₀＝H_I+D_I (1)

obtaining D from formula (1)_I＝H_A+D₀-H_I (2)

The formula (2) is the radius D of the roll surface of the roll_IAnd (4) measuring a roll shape equation of data relative to the laser distance meter, thereby obtaining a curve of the roll shape of the roll.

Further, in the third step, when the journal radiuses at the two ends of the roller are different or because the cross beam and the roller axis are not level, the initial position interval H is set_AAnd end position H_BUnequal, introducing an error variable Δ_I，

Then according to the known parameters of the roller and the data measured by the laser range finder, obtaining:

H_A+D₀+Δ_I＝H_I+D_I (3)

from formula (3) to obtain D_I＝H_A+D₀+Δ_I-H_I (4)

Wherein, Delta_IFor measuring the distance H between the roll surface and the initial position_ADistance H between plane and initial position_AAnd end position H_BThe distance between the connecting lines is set according to the distance,

setting the distance between the initial position and the tail end position to be L and the distance between the initial position and the detection point of the roller surface of the roller to be L_IThen, then

Obtained from formula (4) and formula (5):

and (6) the equation of the roll shape after being corrected, so that the roll shape curve of the roll is obtained when the shaft neck radiuses at two ends of the roll are different or the axes of the cross beam and the roll are not adjusted.

The non-contact type roller shape on-line detection device and the non-contact type roller shape on-line detection method adopt the technical scheme that the supporting legs are vertically arranged at two ends of the cross beam, the positioning base is arranged at the bottom ends of the supporting legs and is positioned on the same plane, the guide rail is arranged on the bottom surface of the cross beam, and the laser range finder is arranged on the guide rail through the connecting rod and slides along the guide rail. Firstly, erecting a positioning base of a detection device on the surfaces of shaft necks at two ends of a roller, and ensuring that a cross beam is parallel to the axis of the roller; adjusting the sliding distance of the laser range finder along the guide rail, and covering the shaft neck and the roll surface of the roll; setting the surfaces of the shaft necks at two ends of the roller as an initial position and a tail end position detected by a laser range finder and roller parameters; and the laser range finder slides along the guide rail and detects the distance from the initial position, the roll surface of the roll and the tail end position, and the roll shape curve of the roll is obtained according to the known parameters of the roll and the data measured by the laser range finder. The device and the method avoid the inconvenience that the roller needs to be offline for detection and then online for installation, overcome the defects of low contact measurement precision and hidden danger in the aspect of safe production of the traditional online roller shape detection, improve the online roller shape detection efficiency and precision, reduce the equipment maintenance workload, reduce the detection cost and avoid the potential safety hazard of detection operation.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a schematic structural diagram of a non-contact type roll shape on-line detection device of a roll of the invention;

FIG. 2 is a schematic view of the detection method;

FIG. 3 is a schematic diagram of the detection method when the journal radiuses at two ends of the roller are different or because the cross beam and the roller axis are not leveled.

Detailed Description