A new type of hand-held workpiece appearance inspection pull rod

Abstract

The utility model discloses a novel hand -held workpiece appearance inspection pull rod, include: the pull rod base body, is equipped with several step holes on its one end surface, magnetic adsorption unit, accommodate in the step hole, be used for adsorbing workpiece, rotary drive unit is set up in the pull rod base body side, the rotary drive unit drives the magnetic adsorption unit rotates, thereby drives the workpiece rotation, the utility model discloses a mechanical transmission structure drive workpiece rotation can be overall observation to workpiece, thoroughly eliminates workpiece appearance inspection blind area, while the pull rod overall structure is compact, and the weight is light, is suitable for long -time handheld operation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing testing equipment technology, and in particular to a novel handheld pull rod for visual inspection of thin-walled steel metal workpieces. Background Technology

[0002] Currently, when visually inspecting thin-walled steel workpieces, ordinary magnetic or electromagnetic pull rods are commonly used to pick up the workpiece. However, the magnetism of ordinary magnetic pull rods is difficult to control, often resulting in the workpiece failing to be picked up or becoming difficult to detach once picked up. While electromagnetic pull rods can control magnetism by switching on and off electricity, they require an external power source, making them inconvenient to use. Furthermore, the significant thermal effect of the electromagnetic coil makes them unsuitable for frequent switching, and their complex structure and heavy weight also hinder prolonged manual operation.

[0003] In addition, all existing magnetic pull rods have a common defect: when the workpiece is attracted, the face-to-face area in contact with the pull rod forms a blind spot for visual inspection, which cannot be observed, posing a potential risk to product quality control.

[0004] Therefore, there is an urgent need for a visual inspection tool that is simple in structure, easy to operate, has no blind spots, and is suitable for long-term manual operation. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology and provide a new type of handheld workpiece appearance inspection pull rod. Through a unique rotating structure design, it realizes blind-spot-free appearance inspection of workpieces, and at the same time has the advantages of being lightweight and easy to operate.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A novel handheld workpiece visual inspection lever, comprising: The tie rod base has several stepped holes on one end face; A magnetic adsorption unit is housed within the stepped hole and is used to adsorb workpieces. A rotary drive unit is disposed on the side of the pull rod base. The rotary drive unit drives the magnetic adsorption unit to rotate, thereby causing the workpiece to rotate.

[0007] Preferably, the magnetic adsorption unit includes a ceramic bearing, a gasket, and a neodymium iron boron magnet arranged sequentially from the bottom of the stepped hole upwards, and a rotating shaft passing through the central hole of the ceramic bearing and the neodymium iron boron magnet in sequence; the ceramic bearing is interference-fitted into the stepped hole.

[0008] Preferably, a protective sleeve is connected to the upper end of the rotating shaft; The protective sleeve is connected to the rotating shaft by a thread.

[0009] Preferably, the protective sleeve is a nylon protective sleeve.

[0010] Preferably, the rotating shaft is an aluminum alloy rotating shaft, which is interference-fitted with the center hole of the ceramic bearing and the neodymium iron boron magnet.

[0011] Preferably, the rotary drive unit includes a slide groove formed in the side wall of the pull rod base, a slide disposed in the slide groove, and a paddle mounted on the outside of the slide, wherein the slide is driven to slide along the slide groove by plucking the paddle.

[0012] Preferably, the inner surface of the slider is in contact with the outer circular surface of the neodymium iron boron magnet in the magnetic adsorption unit. Moving the lever causes the slider to slide within the slider groove, and the slider drives the neodymium iron boron magnet to rotate through friction.

[0013] Preferably, the material of the tie rod base is PEEK.

[0014] Preferably, the gasket is an aluminum alloy gasket.

[0015] The beneficial effects of this utility model are: This utility model provides a novel handheld workpiece appearance inspection lever, comprising a lever base, a magnetic adsorption unit, and a rotary drive unit. During operation, the user holds both ends of the lever base and flicks a lever on the base. The lever drives a sliding plate along a sliding plate groove. The sliding plate, through friction, drives the magnetic adsorption unit to rotate within a stepped hole. The rotary drive unit cooperates with the magnetic adsorption unit, which in turn adsorbs the workpiece, thus enabling inspection of all surfaces of the workpiece. The mechanical transmission structure drives the workpiece to rotate, allowing for comprehensive observation and completely eliminating blind spots in workpiece appearance inspection. Furthermore, the lever has a compact overall structure, is lightweight, and suitable for prolonged handheld operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a novel handheld workpiece appearance inspection pull rod according to this utility model; Figure 2 This is a partial cross-sectional schematic diagram of a novel handheld workpiece appearance inspection lever. Figure 3 This is a schematic diagram of another angle of a novel handheld workpiece appearance inspection lever; The components in the attached diagram are labeled as follows: 1. Railing base; 2. Sliding groove; 3. Sliding piece; 4. Paddle; 5. Workpiece; 6. Shaft; 7. Protective sleeve; 8. Neodymium iron boron magnet; 9. Gasket; 10. Step hole; 11. Ceramic bearing. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0018] Example: This embodiment describes the structure of a novel handheld workpiece appearance inspection lever.

[0019] References are attached. Figure 1-3 As shown, Figure 1 This is a three-dimensional structural diagram of a novel handheld workpiece appearance inspection lever according to this utility model. Figure 2 This is a partial cross-sectional schematic diagram of a novel handheld workpiece appearance inspection lever. Figure 3 This is a schematic diagram of another angle of a novel handheld workpiece appearance inspection lever.

[0020] The present invention relates to a novel handheld workpiece appearance inspection pull rod, comprising a pull rod base 1, a magnetic adsorption unit, and a rotation drive unit.

[0021] The tie rod base 1 is made of PEEK (polyether ether ketone) engineering plastic, which is lightweight, high-strength, and non-magnetic. Several stepped holes 10 are provided on one end face of the tie rod base 1, and magnetic adsorption units are installed in these stepped holes 10 for adsorbing the workpiece 5. The rotary drive unit is located on the side of the tie rod base 1, and drives the magnetic adsorption units to rotate, thereby causing the workpiece 5 to rotate.

[0022] In this embodiment, the magnetic adsorption unit includes a ceramic bearing 11, a washer 9, and a neodymium iron boron magnet 8 arranged sequentially from the bottom of the stepped hole 10 upwards, and a rotating shaft 6 passing through the central holes of the ceramic bearing 11 and the neodymium iron boron magnet 8. The ceramic bearing 11 is installed to the bottom of the stepped hole 10 with an interference fit. The rotating shaft 6 is made of aluminum alloy and has an interference fit with the central holes of the ceramic bearing 11 and the neodymium iron boron magnet 8. A protective sleeve 7 is connected to the upper end of the rotating shaft 6, and the protective sleeve 7 is threaded to the rotating shaft 6. The washer 9 is made of aluminum alloy.

[0023] During assembly, first press the ceramic bearing 11 into the bottom of the stepped hole 10 with an interference fit. Then, insert a shim 9, followed by the neodymium iron boron magnet 8. Next, insert the shaft 6 from the outside, allowing it to pass sequentially through the center holes of the neodymium iron boron magnet 8 and the ceramic bearing 11, forming an interference fit. Finally, screw the protective sleeve 7 onto the threaded end of the shaft 6.

[0024] In this embodiment, the protective sleeve 7 is made of nylon. The function of the nylon protective sleeve is to prevent the metal shaft from directly contacting the workpiece surface, thus avoiding scratches or impacts to the workpiece.

[0025] In this embodiment, the pull rod structure uses lightweight materials such as PEEK and aluminum alloy, resulting in a compact overall structure that is lightweight and suitable for long-term handheld operation.

[0026] To address the problem that the face-to-face area between the workpiece and the pull rod after the workpiece is adsorbed creates a blind spot for visual inspection, this invention achieves 360° inspection of the workpiece's appearance by using a rotary drive unit.

[0027] The rotary drive unit of this invention includes a slide groove 2 formed in the side wall of the pull rod base 1, a slide 3 housed in the slide groove 2, and a paddle 4 mounted on the outside of the slide 3. The paddle is provided on the slide for easy operation by the operator using their fingers. Plugging the paddle 4 causes the slide 3 to slide along the slide groove 2. The inner surface of the slide 3 contacts the outer surface of the neodymium iron boron magnet 8. When the paddle 4 is plucked, the slide 3 slides within the slide groove 2, and the slide 3 drives the neodymium iron boron magnet 8 to rotate through friction, thereby achieving the rotation and inspection of the adsorbed workpiece.

[0028] Working principle: The operator holds the pull rod base 1 with one hand and brings the end with the protective sleeve 7 close to the workpiece 5. When it enters the magnetic range of the neodymium iron boron magnet 8, the workpiece 5 is firmly attracted to the end face of the nylon protective sleeve 7. At this time, the operator holds both ends of the pull rod base 1 with both hands and can inspect the area of ​​the workpiece directly in front of the field of view with the naked eye or a magnifying glass. When other areas need to be inspected, simply use your thumb to gently move the lever 4 left and right. The lever 4 moves the slider 3, and the slider 3 uses friction to make the neodymium iron boron magnet 8 rotate. The neodymium iron boron magnet 8 drives the protective sleeve 7 and the workpiece 5 attracted to it to rotate together through the rotating shaft 6, thereby rotating each surface of the workpiece into the field of view in sequence, achieving a comprehensive inspection without blind spots.

[0029] This invention presents a novel handheld workpiece appearance inspection lever, ingeniously designed and simply structured. Driven by a mechanical transmission mechanism, it rotates the workpiece, allowing for comprehensive observation and completely eliminating blind spots. The lever requires no external power supply and can perform all operations—adsorption, rotation, and inspection—with one or two hands. Multiple workpieces can be inspected consecutively, resulting in high efficiency. The components described in the above embodiments are easy to process and assemble, leading to low manufacturing costs.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A novel handheld workpiece appearance inspection lever, characterized in that, include: The tie rod base (1) has several stepped holes (10) on one end face. A magnetic adsorption unit is housed within the stepped hole (10) and is used to adsorb the workpiece (5). A rotary drive unit is disposed on the side of the pull rod base (1). The rotary drive unit drives the magnetic adsorption unit to rotate, thereby driving the workpiece (5) to rotate.

2. The novel handheld workpiece appearance inspection lever according to claim 1, characterized in that: The magnetic adsorption unit includes a ceramic bearing (11), a gasket (9) and a neodymium iron boron magnet (8) arranged sequentially from the bottom of the stepped hole (10) upwards, and a rotating shaft (6) passing through the central hole of the ceramic bearing (11) and the neodymium iron boron magnet (8) in sequence; the ceramic bearing (11) is interference-fitted into the stepped hole (10).

3. A novel handheld workpiece appearance inspection lever according to claim 2, characterized in that: A protective sleeve (7) is connected to the upper end of the rotating shaft (6); The protective sleeve (7) is connected to the rotating shaft (6) by a thread.

4. A novel handheld workpiece appearance inspection lever according to claim 3, characterized in that: The protective sleeve (7) is a nylon protective sleeve.

5. A novel handheld workpiece appearance inspection lever according to claim 2, characterized in that: The rotating shaft (6) is an aluminum alloy rotating shaft, which is interference-fitted with the center hole of the ceramic bearing (11) and the neodymium iron boron magnet (8).

6. A novel handheld workpiece appearance inspection lever according to claim 2, characterized in that: The rotary drive unit includes a slide groove (2) formed on the side wall of the pull rod base (1), a slide (3) housed in the slide groove (2), and a paddle (4) installed on the outside of the slide (3). By moving the paddle (4), the slide (3) is driven to slide along the slide groove (2).

7. A novel handheld workpiece appearance inspection lever according to claim 6, characterized in that: The inner surface of the slider (3) is in contact with the outer surface of the neodymium iron boron magnet (8) in the magnetic adsorption unit. The slider (3) is slid in the slider groove (2) by moving the lever (4). The slider (3) drives the neodymium iron boron magnet (8) to rotate by friction.

8. A novel handheld workpiece appearance inspection lever according to claim 1, characterized in that: The material of the tie rod base (1) is PEEK.

9. A novel handheld workpiece appearance inspection lever according to claim 2, characterized in that: The gasket (9) is an aluminum alloy gasket.

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