WO2021137796A1

WO2021137796A1 - A measuring device using laser technology

Info

Publication number: WO2021137796A1
Application number: PCT/TR2020/051140
Authority: WO
Inventors: Omer YEGIN
Original assignee: Yenar Dokum Sanayi Ve Ticaret Anonim Sirketi
Priority date: 2019-12-30
Filing date: 2020-11-20
Publication date: 2021-07-08

Abstract

The invention relates to a measuring device using laser technology for measuring tooth profiles on rollers that are threaded with determined profiles on their surface to increase strength, used in grinding processes in milling machines in the food sector.

Description

A MEASURING DEVICE USING LASER TECHNOLOGY

TECHNICAL FIELD The invention relates to a measuring device using laser technology for measuring tooth profiles on rollers that are threaded with determined profiles on their surface to increase strength, used in grinding processes in milling machines in the food sector. BACKGROUND

There are two commercially available methods for measuring tooth profiles. These are the precise scanning of the surface with the probe tip and the measurement of the tooth profiles with the image processing method taken from the product surface with an optical camera / microscope. The two mentioned methods have certain flaws. Their measurement uncertainty is high causing the measurements made to fail to obtain exact results.

Measuring system using probe tip: The most important deficiency of the system using probe tip is that it does not give correct results in tooth profiles. It is the tooth profile area that determines the efficiency of the roller. Although the area calculations in large teeth called thick teeth can be found correctly, it causes the area calculations in thin tooth profiles to be measured incompletely. Because in cases where the probe tip is thicker than the tooth profile, the entire surface cannot be scanned with the probe tip. That causes the miscalculation of the area.

Measurement system using optical camera / microscope: The photo of the roller is taken by placing the microscope on the roller. This photograph is then transferred to a special two-dimensional drawing program and markings are made on the photograph. Then, over these markings, the angle, thickness of the tooth top, etc. measurement results can be obtained.

The optical system lacks in two points. The first of these is that the photo of the roller is taken by optical image acquisition, and the product surface becomes thinner in the image due to the parallax angle (perspective) from the point close to the camera in the image and therefore the thickness of the tooth top cannot be calculated clearly from the product profiles. The "tooth area" profile calculation, which determines the efficiency of the roller, is also made incorrectly accordingly. A second lackis that the user selects the points to be marked on the photograph taken, and since there are blurred areas in the markings made on the image, accurate measurement requires expertise. Non-specialist personnel may measure incorrectly. Ease of use and user interface have a big impact on this.

BRIEF DESCRIPTION OF THE INVENTION

The invention determines the percentage of blunting by using laser technology and pasting the automatically drawn profile onto the existing profile, intended for measuring tooth profiles on rollers that are used in grinding processes in milling machines in today's food sector and whose surface is threaded with determined profiles.

LIST OF FIGURES

Figure 1. Exploded view of the Laser Measurement Device Figure 2. Exploded view of the Battery

The equivalents of the numbers given in the figures:

1. Battery Body

2. Battery Charge Input

3. Energy Input

4. Power Button

5. Access Point

6. Magnet

7. Laser

8. Battery

9. Battery Level Indicator

10. Output Socket

11. Power Cable

12. Ethernet Input

DETAILED DESCRIPTION OF THE INVENTION

Within the scope of our invention, tooth profile measurement is made using laser technology. The highlights of our invention are speed and measurement accuracy and ease of use. Thanks to laser technology, very fast and most accurate measurement information can be obtained quickly and easily reported. At the same time, the roller can be easily measured even when it is inside the roller mill, since it is much smaller, portable and wireless compared to the tools in the methods mentioned above in the prior art. During the reflection of the laser beams on the cylinder and the collection of the reflected rays by the special sensor, it calculates the time the rays reach the sensor from the reflective surface and instantly transfers the surface profile to an interface comprising software.

The points where the measurement results will be obtained are easily marked with the help of software guides on the image transferred to the interface. The theoretical (required tooth profile values) of the cylinder and the tooth profile information obtained in the measurement can be compared both graphically and as value. At the same time, obtained measurement results and comparison results can be reported quickly. In the working principle of the device, the battery (8) is charged with the 24

Volt battery charge input (2) located in the battery body (1). Later, the charged battery (8) is connected to the device with a 24 Volt energy input (3). Operation command is given to the device with the power button (4). Thanks to the battery level indicator (9) on the battery (8), the person who will use the device is informed. A connection is established from the computer to the device with the help of an access point (5), and then the device is attached to the roll ball to be measured by means of a magnet (6). The laser (7) (two-dimensional profile sensor) projects a laser line on the toothed ball and creates a precision linearized profile through an internal camera placed in a triangulation angle. The profile formed is transferred to the computer by specially designed software and the required angles of the tooth detail, the top of the tooth, its pitch, the tooth bottom radius, the grinding area and the depth of the tooth are measured thanks to the program.

Then, the required tooth detail is entered into the program. The program automatically reports the amount of blunting as a percentage and the difference between the measured values between the tooth profile on the existing roller ball and what should be (theoretical). The report notes are as follows; if the percentage difference is less than 6% the state of the roller is "can be used", if the value is 6% to 13% it is good and if it is more than 13%, maintenance is required. This report can be kept weekly or monthly thanks to the program..

Millers use roller balls with teeth on the surface called crusher, which they use when processing their raw materials. These teeth lose their form over time due to use and become blunt. With the Laser Tooth Measurement Device we developed, the amount of blunting and the profile of the tooth can be measured easily.

It is checked whether the teeth on the roller balls used in the flour mills are made according to the diagram and whether the teeth still have the same effect after breaking a certain tonnage of raw material, whether there is blunting, if any, the amount of blunting.

If the flour mills continue to process the products with blunt rollers, the energy consumption of the factory increases. Measuring these teeth periodically in order to prevent this situation will increase productivity in raw material processing.

Thanks to its portable structure, the invention can be easily transported and used in measuring in production areas. Thanks to the invention, the amount of blunting can be followed and more accurate maintenance plans can be made. By comparing the values measured in the tooth profile (vertical tooth angles opened according to the diagram, top of the tooth, pitch, depth, Radius value at the tooth tip, etc.) with the values they should be, it can indicate the differences between them.

Claims

1. A device that makes measurement with the profile drawn automatically by using laser technology characterized in that comprising a battery (8) provides the needed power to the measurement device via socket connection which further comprising a level indicator (9) and a battery charge input (2), a power input (3) provides an entry to the battery charge input (2), a magnet (6) that ensures the attachment of the second roll to be measured, a two-dimensional laser (7) that projects a laser line on the toothed ball and creates a precision linearized profile via an internal camera placed in triangulation angle, a software that measures and reports the amount of blunting in percentage between the values that should be and the tooth profile on the existing roller ball and the differences between the measured values, the angles in the tooth detail, the top of the tooth, the pitch, the tooth base radius, grinding area and tooth depth.