Device for detecting laser fusion welding position on surface of workpiece

Abstract

The utility model discloses a device for detecting a laser fusion welding position on the surface of a workpiece, which comprises a cabinet body, a mirror frame arranged on the side edge of the cabinet body, a magnifying glass arranged in the mirror frame, an ultrasonic hardometer arranged on the cabinet body, a measuring probe connected with the ultrasonic hardometer through a cable, a lifting motor arranged in the cabinet body, and a sliding rail arranged above the lifting motor, a fixed sliding block is connected to the sliding rail in a sliding mode and installed at the lifting output end of the lifting motor, and a measuring probe is installed on the fixed sliding block and exposed out of the front side of the cabinet body. According to the device for detecting the laser fusion welding position of the workpiece surface, the two mirror frames with the magnifying lenses are arranged, so that the workpiece surface can be clearly observed, and surface colors of different positions are compared for distinguishing; the ultrasonic hardness meter is arranged and matched with the lifting motor and the micro-motion electric cylinder to control the position of the measuring probe, so that hardness detection can be conveniently carried out on the surface of the workpiece in the longitudinal direction.

Description

Technical Field

[0001] The utility model relates to the field of equipment for detecting laser welding on the surface of a workpiece, in particular to a device for detecting the laser welding position on the surface of a workpiece. Background Art

[0002] Laser cladding is an advanced surface treatment technology that restores or improves the size and performance of parts by cladding a layer of material with special properties on the surface of the base material. However, when the bearing seat of a component is damaged, some factories use laser cladding treatment, such as the bearing seat of the fan input shaft. After being used on the machine, there will be defects between the cladding layer and the base under repeated stress, such as microcracks, pores, and unfused. These defects may develop into fatigue crack sources under stress and eventually lead to fracture. In order to detect the laser cladding on the surface of the bearing workpiece, a device for detecting the laser cladding position on the surface of the workpiece is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a device for detecting the laser welding position on the surface of a workpiece. By setting two frames with magnifying glasses, the surface of the workpiece can be clearly observed and distinguished by comparing the surface colors at different positions; by setting an ultrasonic hardness tester, cooperating with a lifting motor and a micro-electric cylinder to control the position of the measuring probe, it is convenient to perform hardness detection in the longitudinal direction of the workpiece surface.

[0004] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model is: a device for detecting the laser welding position on the surface of a workpiece, comprising: a cabinet, a mirror frame is installed on the side of the cabinet, a magnifying glass is installed in the mirror frame, an ultrasonic hardness tester is installed on the cabinet, the ultrasonic hardness tester is provided with a display screen and control buttons on the surface of the cabinet, the ultrasonic hardness tester is connected to a measuring probe via a cable, a lifting motor is installed inside the cabinet, a sliding track is provided above the lifting motor, a fixed slider is slidably connected to the sliding track, the fixed slider is installed at the lifting output end of the lifting motor, the measuring probe is installed on the fixed slider, and the measuring probe is exposed on the front side of the cabinet.

[0005] Preferably, a micro-electric cylinder is mounted on the fixed slide, and the measuring probe is mounted on the micro-electric cylinder.

[0006] Preferably, a battery is installed in the cabinet, the ultrasonic hardness tester, the lifting motor and the micro-electric cylinder are electrically connected to the battery, and the battery is provided with a power switch, and the power switch is installed on the surface of the cabinet.

[0007] Preferably, rubber soft sleeves are provided at the junctions of the cables connecting the ultrasonic hardness tester, the lifting motor, the micro-electric cylinder and the battery.

[0008] Preferably, the mirror frame and the cabinet are rotatably connected via a rotating shaft.

[0009] Preferably, there are two mirror frames, which are respectively located on two sides of the cabinet.

[0010] Preferably, a plurality of universal wheels are installed at the bottom of the cabinet, and the universal wheels are self-locking universal wheels.

[0011] Preferably, a handle is installed on the rear side of the cabinet.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device for detecting the laser welding position on the workpiece surface can clearly observe the workpiece surface by setting two frames with magnifying glasses, and distinguish the surface by comparing the surface colors at different positions; by setting an ultrasonic hardness tester, cooperating with a lifting motor and a micro-electric cylinder to control the position of the measuring probe, it is convenient to perform hardness detection in the longitudinal direction of the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the rear of the device for detecting the laser welding position on the surface of a workpiece according to the utility model;

[0015] Figure 2 It is a three-dimensional schematic diagram of the front of the device for detecting the laser welding position on the surface of a workpiece according to the utility model;

[0016] Figure 3 It is a side cross-sectional schematic diagram of a device for detecting the laser welding position on the surface of a workpiece according to the utility model;

[0017] Figure 4 It is a side view schematic diagram of the device for detecting the laser welding position on the surface of a workpiece of the present invention during detection.

[0018] In the figure: 10, cabinet; 101, universal wheel; 102, handle; 11, picture frame; 12, magnifying glass; 20, ultrasonic hardness tester; 201, display screen; 202, control button; 21, measuring probe; 30, lifting motor; 31, sliding track; 32, fixed slider; 33, micro-electric cylinder; 331, rubber soft cover; 40, battery; 41, power switch. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 The present embodiment provides a device for detecting the laser welding position on the surface of a workpiece, comprising: a cabinet 10, a mirror frame 11 is installed on the side of the cabinet 10, the mirror frame 11 is rotatably connected to the cabinet 10 through a rotating shaft, the number of the mirror frames 11 is set to two, the two mirror frames 11 are respectively on both sides of the cabinet 10, a magnifying glass 12 is installed in the mirror frame 11, and the surface of the workpiece can be clearly seen on both sides, an ultrasonic hardness tester 20 is installed on the cabinet 10, the ultrasonic hardness tester 20 is provided with a display screen 201 and a control button 202 on the surface of the cabinet 10, the ultrasonic hardness tester 20 is connected to a measuring probe 21 through a cable, a lifting motor 30 is installed inside the cabinet 10, a sliding track 31 is provided above the lifting motor 30, a fixed slider 32 is slidably connected to the sliding track 31, the fixed slider 32 is installed at the lifting output end of the lifting motor 30, the measuring probe 21 is installed on the fixed slider 32, and the fixed slider 32 is installed at the lifting output end of the lifting motor 30. A micro-electric cylinder 33 is installed on the block 32, and the measuring probe 21 is installed on the micro-electric cylinder 33. The micro-electric cylinder 33 facilitates the measuring probe 21 to approach the surface of the workpiece. The measuring probe 21 is exposed on the front side of the cabinet 10. A battery 40 is installed in the cabinet 10. The ultrasonic hardness tester 20, the lifting motor 30 and the micro-electric cylinder 33 are all electrically connected to the battery 40. The battery 40 is provided with a power switch 41. The power switch 41 is installed on the surface of the cabinet 10 and can operate independently without connecting to an additional power source, thereby expanding the scope of use. The intersection of the cables connecting the ultrasonic hardness tester 20, the lifting motor 30, the micro-electric cylinder 33 and the battery 40 is provided with a rubber soft sleeve 331 to prevent damage to the cable connection. Several universal wheels 101 are installed at the bottom of the cabinet 10. The universal wheels 101 are self-locking universal wheels. A handle 102 is installed on the rear side of the cabinet 10, which can be pushed and pulled to enhance the portability of the device.

[0021] Structural principle:

[0022] like Figure 1-Figure 4 As shown, when detecting the laser welding position on the bearing surface of the workpiece, firstly a macroscopic inspection is performed: a magnifying glass 12 is used to check whether there are visible defects in the cladding area, such as cracks, bubbles, inclusions, etc.;

[0023] Hardness test: Use the measuring probe 21 connected to the ultrasonic hardness tester 20 to test the hardness of the cladding layer and the heat-affected zone. On three longitudinal lines in the 120° direction of the bearing seat circumference, test the hardness of three points within the range of 20-50mm from the inner side of the inner and outer end faces and one point in the middle. Test the hardness of three points at any position of the non-bearing seat. If the hardness difference between the bearing seat and the non-bearing seat is less than 60HB, acid etching verification is performed. If the hardness difference is greater than 60HB, acid etching verification may not be performed.

[0024] Acid etching verification: Use 4% nitric acid alcohol solution to rub the 30mm wide and 100mm long arc areas on both sides of the bearing end face, dry for 5 minutes, the color of the bearing position is basically unchanged, and the color of the non-bearing position becomes darker, confirming that the bearing position has been clad.

[0025] In summary, the device for detecting the laser welding position on the surface of a workpiece can clearly observe the surface of the workpiece by setting two frames 11 with magnifying glasses 12, and distinguish the surface by comparing the surface colors at different positions; by setting an ultrasonic hardness tester 20, cooperating with a lifting motor 30 and a micro-electric cylinder 33 to control the position of the measuring probe 21, it is convenient to perform hardness detection in the longitudinal direction of the workpiece surface.

[0026] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for detecting the laser welding position on the surface of a workpiece, characterized in that: include: A cabinet (10), a mirror frame (11) is installed on the side of the cabinet (10), a magnifying glass (12) is installed in the mirror frame (11), an ultrasonic hardness tester (20) is installed on the cabinet (10), a display screen (201) and a control button (202) are provided on the surface of the cabinet (10), the ultrasonic hardness tester (20) is connected to a measuring probe (21) via a cable, a lifting motor (30) is installed inside the cabinet (10), a sliding track (31) is provided above the lifting motor (30), a fixed slider (32) is slidably connected to the sliding track (31), the fixed slider (32) is installed at the lifting output end of the lifting motor (30), the measuring probe (21) is installed on the fixed slider (32), and the measuring probe (21) is exposed at the front side of the cabinet (10).

2. The device for detecting the laser welding position on the workpiece surface according to claim 1, characterized in that: A micro-motion electric cylinder (33) is mounted on the fixed slide block (32), and the measuring probe (21) is mounted on the micro-motion electric cylinder (33).

3. The device for detecting the laser welding position on the workpiece surface according to claim 1, characterized in that: A storage battery (40) is installed in the cabinet (10); the ultrasonic hardness tester (20), the lifting motor (30) and the micro-electric cylinder (33) are all electrically connected to the storage battery (40); the storage battery (40) is provided with a power switch (41); and the power switch (41) is installed on the surface of the cabinet (10).

4. The device for detecting the laser welding position on the workpiece surface according to claim 3, characterized in that: A rubber soft sleeve (331) is provided at the intersection of cables connecting the ultrasonic hardness tester (20), the lifting motor (30), the micro-electric cylinder (33) and the storage battery (40).

5. The device for detecting the laser welding position on the workpiece surface according to claim 1, characterized in that: The mirror frame (11) and the cabinet (10) are rotatably connected via a rotating shaft.

6. The device for detecting the laser welding position on the workpiece surface according to claim 5, characterized in that: The number of the mirror frames (11) is two, and the two mirror frames (11) are respectively located on two sides of the cabinet (10).

7. The device for detecting the laser welding position on the workpiece surface according to claim 1, characterized in that: A plurality of universal wheels (101) are installed at the bottom of the cabinet (10), and the universal wheels (101) are self-locking universal wheels.

8. A device for detecting the laser welding position on a workpiece surface according to any one of claims 1 to 7, characterized in that: A handle (102) is installed on the rear side of the cabinet (10).

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