CN206223112U - Flatness quick detection equipment based on many laser feelers - Google Patents

Abstract

The utility model relates to the technical field of photoelectric measurement, in particular to a rapid flatness detection device based on a multi-laser measuring head, comprising an organic base, a detection area is arranged on the upper end of the base, and the bottom of the detection area sees through, and a movable Fixtures, movable fixtures are used to fix the tested product flat on the detection area; there are multiple sets of laser displacement measuring heads under the detection area, and multiple sets of laser displacement measuring heads move and scan the tested product to obtain the surface of the tested product. At the same point, multiple sets of laser displacement measuring heads and the computers connected to them are hidden in the machine base, and the monitor connected to the computer is set up on the machine base. The flatness rapid detection equipment based on the multi-laser measuring head provided by the utility model adopts the photoelectric detection technology and optimizes the product structure, thereby achieving small volume, convenient and fast detection, high detection accuracy and good stability, which is suitable for industrial production needs and meets Inspection of products of various sizes.

Description

Flatness rapid detection equipment based on multi-laser measuring head

technical field

The utility model relates to the technical field of photoelectric measurement, in particular to the technical field of flatness detection.

Background technique

Flatness is one of the geometric tolerances, which refers to the deviation of the macro-concave-convex height on the surface of the object from the ideal plane. In the traditional detection methods, the measurement of flatness usually includes: plug gauge/feeler gauge measurement method, liquid level method, laser plane interferometer measurement method (flat crystal interferometry method), level meter/digital level measurement method, and meter measurement Law.

The feeler gauge measurement method only needs a set of portable feeler gauges to perform a rough measurement of flatness anytime and anywhere. At present, many factories still use this method for detection. Due to its low precision, the thinnest conventional feeler gauge is 10um, the detection efficiency is low, the result is not comprehensive enough, and only the edge of the part can be detected.

The liquid level method, based on the working principle of the connector, is suitable for measuring the flatness of continuous or discontinuous large planes, but it takes a long time to measure and is sensitive to temperature, so it is only suitable for planes with low measurement accuracy.

Laser plane interferometer measurement method, the most typical usage is flat crystal interferometry. But it is mainly used for the measurement of smooth small planes, such as the flatness measurement of mobile phones, the flatness measurement of the middle frame of mobile phones, the working surface of gauges, and optical lenses.

The level measurement method is widely used in the straightness and flatness measurement of the workpiece surface. High measurement accuracy, good stability, small size, easy to carry. However, when using this method to measure, it is necessary to repeatedly move the position of the instrument and record the data of each measuring point, which is time-consuming, laborious, long adjustment time, and the data processing procedure is cumbersome.

The typical application of meter measurement method is flat micrometer and three-coordinate instrument, among which three-coordinate instrument is the most widely used. During the measurement, the indicator moves on the sample to be tested, and the data of each measurement point relative to the measurement reference is measured according to the selected layout points, and then the flatness error is evaluated through data processing. But its efficiency is low, usually a sample takes several minutes, far from the expectation of 15ppm.

Contents of the invention

The purpose of the utility model is to provide a fast flatness detection device based on a multi-laser measuring head, which is small in size and convenient and fast in detection.

In order to achieve the above object, the utility model adopts the following technical solutions:

Flatness rapid testing equipment based on multi-laser probes, including an organic base, the upper end of the base is equipped with a detection area, the bottom of the detection area is perspective, and a movable fixture is set on the detection area, and the movable fixture is used to flatly stick the tested product Fixed on the detection area; under the detection area, there are multiple sets of laser displacement probes, multiple sets of laser displacement probes move and scan the product under test to obtain points on the surface of the product under test, multiple sets of laser displacement probes and their connections The computer is hidden in the base, and the monitor connected to the computer is set up on the base.

The multiple groups of laser displacement measuring heads move synchronously and are driven by a motor screw mechanism.

A foldable keyboard holder is provided on the machine base, and a keyboard holder and a mouse cover are provided on the keyboard holder.

The keyboard holder is unfolded through the top of the hydraulic rod, and a groove is provided on the machine base, and the groove is used for the keyboard holder to be folded and accommodated.

The flatness rapid detection equipment based on the multi-laser measuring head provided by the utility model adopts the photoelectric detection technology and optimizes the product structure, thereby achieving small size, convenient and fast detection, high detection accuracy and good stability, which is suitable for industrial production requirements and meets Inspection of products of various sizes.

Description of drawings:

Accompanying drawing 1 is the structural representation of preferred embodiment of the utility model;

Accompanying drawing 2 is the partial enlarged view of Fig. 1 embodiment;

Accompanying drawing 3 is the front view of Fig. 1 embodiment;

Accompanying drawing 4 is the working schematic diagram of multiple sets of laser displacement measuring heads of the embodiment in Fig. 1 .

detailed description:

The conception, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

Referring to Figures 1, 2, 3, and 4, the utility model relates to a flatness rapid detection device based on a multi-laser measuring head, including an organic base 1, the base 1 is a horizontal design, and the upper end of the base 1 is equipped with a detection device. Area 11, the bottom of the detection area 11 is seen through, and a movable fixture 14 is arranged on the detection area 11, and the movable fixture is used to flatly fix the tested product on the detection area 11. The movable fixture 14 can be adjusted, as shown in the embodiment of Fig. 1 and 2, a plurality of positioning holes 111 are provided on the detection area 11, and the positioning holes 111 are set in conjunction with the positioning of the movable fixture to meet the detection of products of different sizes. According to the size of the inspected product, the movable fixture can be used to adjust to form a single station or multi-station, thereby improving the inspection efficiency. There are multiple sets of laser displacement probes 2 below the detection area 11. Multiple sets of laser displacement probes 2 move and scan the product under test to obtain points on the surface of the product under test. Multiple sets of laser displacement probes 2 and their connected computers Hidden in the machine base 1, the monitor 3 connected to the computer is erected on the machine base 1, and the monitor 3 provides visual display to facilitate detection. In this embodiment, the multiple sets of laser displacement probes 2 move synchronously, driven by the motor screw mechanism, and when switching product detection, automatic positioning adjustment can be realized without manually adjusting the position of the laser displacement probes 2 . Multiple groups of laser displacement measuring heads 2 scan the tested product at the same time to obtain the surface point cloud data and thickness value of the tested product, and then the computer calculates the flatness according to the obtained point cloud, and the number of points can be set arbitrarily according to customer requirements. Calculation of flatness: use the obtained product surface point cloud to fit the first plane, translate the first plane up to obtain the upper plane, and translate the first plane down to obtain the lower plane, so that the points participating in the fitting of the first plane are located on the upper and lower planes Between the planes, the point above the first plane with the largest distance to the first plane is on the upper plane, and the point below the first plane with the largest distance to the first plane is on the lower plane, so the distance between the upper plane and the lower plane The distance is the flatness.

As shown in Figures 1 and 3, in this embodiment, the said machine base 1 is provided with a foldable keyboard holder 12, and the keyboard holder 12 is provided with a keyboard holder 121 and a mouse cover 122, and the keyboard holder 121 is hook-shaped, clip The keyboard connected to the computer is tightly connected, and one side of the mouse cover 122 is hinged with the keyboard holder 12, and works in a flip mode. After the mouse cover 122 closes the mouse, it is fixed by magnetic attraction, so as to securely protect the mouse. In this embodiment, the keyboard tray 12 is unfolded through the top of the hydraulic rod 4, which is convenient for unfolding and retracting.

The utility model achieves the advantages of small size, convenient and fast detection, high detection accuracy and good stability through scientific and reasonable structural design, which is suitable for industrial production needs and satisfies the detection of products of various sizes.

Of course, although the preferred specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, the utility model should not be limited to the same structure and operation as the above description and accompanying drawings, for those skilled in the art Many equivalent improvements and changes can also be made to the above-mentioned embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present utility model, but these improvements and changes should all belong to the claims of the present utility model. scope.

Claims (4)

1. The flatness rapid detection equipment based on multi-laser measuring head is characterized in that: it includes an organic base (1), the upper end of the base (1) is provided with a detection area (11), and the bottom of the detection area (11) is perspective, in There is a movable fixture (14) on the detection area (11), and the movable fixture (14) is used to flatly fix the tested product on the detection area (11); there are multiple sets of laser displacements under the detection area (11) Measuring head (2), multiple sets of laser displacement measuring heads (2) move and scan the product under test to obtain points on the surface of the product under test, multiple sets of laser displacement measuring heads (2) and their connected computers are hidden in the base (1 ), the monitor (3) connected to the computer is erected on the base (1). 2. The flatness rapid detection equipment based on multiple laser measuring heads according to claim 1, characterized in that: the multiple groups of laser displacement measuring heads (2) move synchronously and are driven by a motor screw mechanism. 3. The flatness rapid detection equipment based on multi-laser probes according to claim 1, characterized in that: the base (1) is provided with a foldable keyboard tray (12), the keyboard tray (12) Keyboard clip (121) and mouse cover (122) are arranged on it. 4. The flatness rapid detection equipment based on multi-laser probes according to claim 3, characterized in that: the keyboard tray (12) is extended by the hydraulic rod (4), and the machine base (1) is equipped with Groove (13), the groove (13) is for the keyboard tray (12) to be folded and accommodated.