A camshaft eddy current testing machine

Abstract

The present invention discloses a camshaft eddy current detection machine, which relates to the field of eddy current detection equipment. The technical solution thereof is as follows: it comprises a frame, a conveyor line arranged on the frame, and a product carrier arranged on the conveyor line. The frame is provided with a code reader, a rotary tooling, an eddy current detection mechanism, and a defective product separation mechanism. The eddy current detection mechanism comprises a first XZ axis motion module, a detection bracket, a plurality of spring sliders arranged on the detection bracket, and an eddy current probe arranged on each spring slider. The rotary tooling comprises a first X axis linear module and a second X axis linear module respectively arranged on both sides of the conveyor line. A rotating claw plate assembly is arranged on the first X axis linear module, a driven top is arranged on the second X axis linear module, and a lifting mechanism is also arranged on the frame. When the present invention is working, a plurality of eddy current probes are in floating contact with a plurality of cams of the camshaft to perform a full crack inspection on them, and it is not easy to miss inspections, and it has the advantages of high detection accuracy and work efficiency.

Description

Technical Field

[0001] The invention relates to the field of eddy current testing equipment, and more particularly to a camshaft eddy current testing machine. Background Art

[0002] The camshaft is a component in a piston engine, and its function is to control the opening and closing of the valve. Although the speed of the camshaft in a four-stroke engine is half that of the crankshaft (in a two-stroke engine, the speed of the camshaft is the same as the crankshaft), its speed is usually still very high, and it needs to withstand a large torque. Therefore, the design has very high requirements for the strength and support of the camshaft, and its material is generally high-quality alloy steel or alloy steel. Since the valve movement law is related to the power and operating characteristics of an engine, the camshaft occupies a very important position in the design process of the engine. Therefore, the camshaft needs to be strictly inspected for appearance cracks before leaving the factory. The existing inspection method is usually to inspect multiple cam parts of the camshaft one by one through a manual handheld eddy current detector. The inspection efficiency is low, it is difficult to meet production needs, and it is easy to miss inspections, and the quality of the camshaft is difficult to control.

[0003] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a camshaft eddy current testing machine, which solves the problems of low camshaft testing efficiency and low testing accuracy in the prior art.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a camshaft eddy current detection machine, comprising a frame, a conveyor line arranged on the frame, and a product carrier arranged on the conveyor line. A code reader, a rotating tool, an eddy current detection mechanism and a defective product separation mechanism are sequentially arranged on the frame along the conveying direction of the conveyor line. The eddy current detection mechanism includes a first XZ-axis motion module arranged above the conveyor line through a first truss, a detection bracket arranged on the output end of the first XZ-axis motion module, a plurality of spring sliders arranged in parallel on the detection bracket, and an eddy current probe arranged on each spring slider. The eddy current probe is located on one side of the axis of the rotating tool. The rotating tool includes a first X-axis linear module and a second X-axis linear module respectively arranged on both sides of the conveyor line. A rotating claw disk assembly is arranged at the output end of the first X-axis linear module, and a driven top is arranged at the output end of the second X-axis linear module. The driven top and the rotating claw disk assembly are coaxially arranged. The frame is also provided with a lifting mechanism for lifting the product on the product carrier to the axis of the rotating tool.

[0006] In one embodiment, the conveyor line includes two belt line assemblies, a slide rail is arranged on the frame along the X-axis, the two belt line assemblies are connected to the slide rail for sliding toward each other, and the frame is respectively provided with a screw nut subassembly for driving each belt line assembly to slide, each of the belt line assemblies includes a belt line support slidably connected to the slide rail, a first synchronous wheel and a second synchronous wheel respectively rotatably connected to the two ends of the belt line support, and a synchronous belt transmission-connected between the first synchronous wheel and the second synchronous wheel, the two first synchronous wheels are each provided with a polygonal shaft groove, a polygonal shaft adapted thereto is arranged in the polygonal shaft groove, a servo motor for driving the polygonal shaft to rotate is arranged on the frame, and the product carrier is provided on each of the synchronous belts, and the two product carriers located on the two synchronous belts can be respectively supported at both ends of the product.

[0007] In one of the embodiments, a height adjustment head is fixed on the detection bracket, and the spring slider is fixed on the height adjustment head.

[0008] In one embodiment, the rotating claw plate assembly includes a claw plate support fixed on the output end of the first X-axis linear module, a claw plate motor fixed on the claw plate support, and a three-jaw chuck fixed on the output end of the claw plate motor.

[0009] In one embodiment, the defective product separation mechanism includes a second truss fixed on the frame above the conveyor line, a second XZ-axis motion module arranged on the second truss, and a clamping cylinder fixed on the output end of the second XZ-axis motion module, and the inner sides of the two clamping jaws of the clamping cylinder are respectively provided with clamping tips, and the two clamping tips are coaxially arranged, and a defective product conveyor belt is arranged on the frame at the lower side of the second truss.

[0010] In one of the embodiments, an infrared sensor for detecting whether a product is incoming is provided on the frame at the head end of the conveyor line.

[0011] In one embodiment, the lifting mechanism includes a lifting cylinder fixed on a frame below the conveyor line and a contoured lifting block fixed on a piston rod of the lifting cylinder.

[0012] In one of the embodiments, the detection end of the eddy current probe is provided with a wear-resistant material.

[0013] In summary, the present invention has the following beneficial effects: the present invention realizes the code reading and archiving, appearance crack detection and defective product separation of the camshaft through the arrangement of a code reader, a rotating tooling, an eddy current detection mechanism and a defective product separation mechanism, reduces the input of manual labor, and improves the degree of automation of camshaft detection, and by arranging multiple spring sliders and arranging eddy current probes on each spring slider, during detection, the rotating tooling drives the camshaft to rotate one circle, and the multiple eddy current probes are in floating contact with the multiple cams of the camshaft to perform a full crack inspection thereon, which is less likely to miss detection than manual detection, and also has the advantages of high detection accuracy and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a camshaft eddy current testing machine according to an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the internal structure of a camshaft eddy current testing machine according to an embodiment of the present application;

[0016] Figure 3 It is a structural schematic diagram of a conveying line in a camshaft eddy current testing machine according to an embodiment of the present application;

[0017] Figure 4 A schematic diagram of the structure of an eddy current detection mechanism in a camshaft eddy current detection machine according to an embodiment of the present application;

[0018] Figure 5 This is a schematic diagram of the structure of a rotating tooling in a camshaft eddy current testing machine according to an embodiment of the present application.

[0019] In the figure: 1, frame; 2, conveyor line; 21, slide rail; 22, belt line support; 23, first synchronous wheel; 24, second synchronous wheel; 25, synchronous belt; 26, screw nut subassembly; 27, polygonal shaft; 28, servo motor; 3, product carrier; 4, code reader; 5, rotary tooling; 51, first X-axis linear module; 52, second X-axis linear module; 53, rotary claw plate assembly; 54, driven top; 6, eddy current Detection mechanism; 61. first truss; 62. first XZ axis motion module; 63. detection bracket; 64. height adjustment head; 65. spring slider; 66. eddy current probe; 7. defective product separation mechanism; 71. second truss; 72. second XZ axis motion module; 73. clamping claw cylinder; 74. clamping top; 75. defective product conveyor belt; 8. infrared sensor; 9. lifting mechanism; 91. lifting cylinder; 92. contoured top block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, an embodiment of the present application provides a camshaft eddy current testing machine, including a frame 1, a conveyor line 2 arranged on the frame 1, and a product carrier 3 arranged on the conveyor line 2. A code reader 4, a rotating tool 5, an eddy current testing mechanism 6, and a defective product separation mechanism 7 are sequentially arranged on the frame 1 along the conveying direction of the conveyor line 2. The eddy current testing mechanism 6 includes a first XZ axis motion module 62 arranged above the conveyor line 2 through a first truss 61, a testing bracket 63 arranged on the output end of the first XZ axis motion module 62, a plurality of spring sliders 65 arranged in parallel on the testing bracket 63, and an eddy current probe 66 arranged on each spring slider 65, and the eddy current probe 66 is located on one side of the axis of the rotating tool 5. The rotary tooling 5 comprises a first X-axis linear module 51 and a second X-axis linear module 52 respectively arranged on both sides of the conveyor line 2, a rotating claw plate assembly 53 is arranged at the output end of the first X-axis linear module 51, and a driven top 54 is arranged at the output end of the second X-axis linear module 52, and the driven top 54 and the rotating claw plate assembly 53 are arranged coaxially. The frame 1 is also provided with a lifting mechanism 9 for lifting the product on the product carrier 3 to the axis center line of the rotary tooling 5.

[0022] It should be noted that the spring slider 65 includes two sliders that can slide against each other and a spring disposed between the two sliders. Figure 2 The spatial coordinate axes are shown.

[0023] When the above-mentioned detection machine is working, the camshaft to be detected is placed on the product carrier 3, the conveyor line 2 is running, and after the code reader 4 reads the two-dimensional code information on the camshaft, the lifting mechanism 9 lifts the camshaft to the position of the axis of the rotating tooling 5, and the first X-axis linear module 51 and the second X-axis linear module 52 move toward each other. The rotating claw disk assembly 53 is clamped at one end of the camshaft, and the driven top 54 is pressed against the other end of the camshaft. The eddy current probe 66 contacts the camshaft, and the rotating claw disk assembly 53 drives the camshaft to rotate one circle to complete the crack detection of the outer cam surface of the camshaft, and through the setting of the spring slider 65, the eddy current probe 66 will float with the outer cam surface of the camshaft, so that poor contact is not likely to occur between the two. After the detection is completed, the good product flows into the next workstation along the conveyor line 2, and the defective product separation mechanism 7 separates the defective products.

[0024] The above method, through the arrangement of the code reader 4, the rotating tooling 5, the eddy current detection mechanism 6 and the defective product separation mechanism 7, realizes the code reading and archiving, appearance crack detection and defective product separation of the camshaft, reduces the input of manual labor, and improves the degree of automation of camshaft detection. In addition, by arranging multiple spring sliders 65 and arranging eddy current probes 66 on each spring slider 65, during detection, the rotating tooling 5 drives the camshaft to rotate one circle, and the multiple eddy current probes 66 float in contact with the multiple cams of the camshaft to perform a full crack inspection. Compared with manual inspection, it is less likely to miss inspections, and it also has the advantages of high detection accuracy and work efficiency.

[0025] On the basis of the above, if Figure 3 As shown, the conveyor line 2 includes two belt line assemblies, a slide rail 21 is arranged on the frame 1 along the X-axis, and the two belt line assemblies are connected to the slide rail 21 in a sliding manner toward each other, and the frame 1 is respectively provided with a screw nut subassembly 26 for driving each belt line assembly to slide, each of the belt line assemblies includes a belt line support 22 slidably connected to the slide rail 21, a first synchronous wheel 23 and a second synchronous wheel 24 respectively rotatably connected to the two ends of the belt line support 22, and a synchronous belt 25 transmission-connected between the first synchronous wheel 23 and the second synchronous wheel 24, the two first synchronous wheels 23 are each provided with a polygonal shaft groove, and a polygonal shaft 27 adapted thereto is arranged in the polygonal shaft groove, and a servo motor 28 for driving the polygonal shaft 27 to rotate is arranged on the frame 1, and the product carrier 3 is arranged on each of the synchronous belts 25, and the two product carriers 3 located on the two synchronous belts 25 can be supported at both ends of the product respectively.

[0026] Specifically, the distance between the two belt line assemblies can be adjusted by adjusting any one of the screw nut subassemblies 26, so that it can be suitable for the detection of camshafts of different lengths, and has the advantages of convenient adjustment and strong applicability.

[0027] On the basis of the above, if Figure 4 As shown, a height adjustment head 64 is fixed on the detection bracket 63 , and the spring slider 65 is fixed on the height adjustment head 64 .

[0028] By setting the height adjustment head 64 , the contact distance between the eddy current probe 66 and the camshaft can be adjusted.

[0029] On the basis of the above, if Figure 5 As shown, the rotating claw plate assembly 53 includes a claw plate support fixed on the output end of the first X-axis linear module 51, a claw plate motor fixed on the claw plate support, and a three-jaw chuck fixed on the output end of the claw plate motor.

[0030] During operation, the three-jaw chuck first clamps the camshaft, and then the claw motor drives the claw to rotate. The three-jaw chuck has the advantages of good stability and easy clamping.

[0031] On the basis of the above, if Figure 2 As shown, the defective product separation mechanism 7 includes a second truss 71 fixed on the frame 1 above the conveyor line 2, a second XZ-axis motion module 72 arranged on the second truss 71, and a clamping cylinder 73 fixed on the output end of the second XZ-axis motion module 72, the inner sides of the two clamping jaws of the clamping cylinder 73 are respectively provided with clamping tips 74, the two clamping tips 74 are coaxially arranged, and a defective product conveyor belt 75 is arranged on the frame 1 at the lower side of the second truss 71.

[0032] When the above mechanism is working, the second XZ-axis motion module 72 drives the clamping cylinder 73 to descend, and the two clamping jaws of the clamping cylinder 73 move toward each other, so that the two clamping tips 74 are respectively pressed against the two ends of the camshaft, and then the second XZ-axis motion module 72 drives the camshaft to move and release it on the defective product conveyor belt 75.

[0033] The above method realizes the rapid separation of defective products, which is beneficial to improving the work efficiency of separation of good and defective products.

[0034] On the basis of the above, if Figure 2 As shown, an infrared sensor 8 for detecting whether a product is incoming is provided on the frame 1 at the head end of the conveyor line 2 .

[0035] By setting the infrared sensor 8, when there is no material coming into the head end of the conveyor line 2, the equipment will not operate, thereby avoiding the situation of empty inspection, which is beneficial to energy saving and emission reduction.

[0036] On the basis of the above, if Figure 3 As shown, the lifting mechanism 9 includes a lifting cylinder 91 fixed on the frame 1 below the conveyor line 2 and a contoured lifting block 92 fixed on the piston rod of the lifting cylinder 91 .

[0037] Specifically, in order to improve the stability of the camshaft lifting, the lifting mechanism 9 is provided with two, and when working, the two contoured lifting blocks 92 can be respectively received at the two ends of the camshaft.

[0038] On the basis of the above, the detection end of the eddy current probe 66 is provided with a wear-resistant material.

[0039] Specifically, the wear-resistant material may be a ceramic coating, an aluminum oxide coating, a zirconium oxide coating, a chromium oxide coating, or an epoxy coating.

[0040] The above method is beneficial to improving the service life of the eddy current probe by providing the wear-resistant coating.

[0041] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A camshaft eddy current testing machine, comprising a frame (1), a conveyor line (2) arranged on the frame (1), and a product carrier (3) arranged on the conveyor line (2). Features: The frame (1) is provided with a code reader (4), a rotating tool (5), an eddy current detection mechanism (6) and a defective product separation mechanism (7) in sequence along the conveying direction of the conveying line (2); the eddy current detection mechanism (6) comprises a first XZ axis motion module (62) arranged above the conveying line (2) via a first truss (61), a detection bracket (63) arranged on the output end of the first XZ axis motion module (62), a plurality of spring sliders (65) arranged in parallel on the detection bracket (63), and an eddy current probe (66) arranged on each spring slider (65), wherein the eddy current probe (66) is located On one side of the axis of the rotary tooling (5), the rotary tooling (5) comprises a first X-axis linear module (51) and a second X-axis linear module (52) respectively arranged on both sides of the conveyor line (2), the output end of the first X-axis linear module (51) is provided with a rotating claw plate assembly (53), the output end of the second X-axis linear module (52) is provided with a driven top (54), the driven top (54) and the rotating claw plate assembly (53) are coaxially arranged, and the frame (1) is also provided with a lifting mechanism (9) for lifting the product on the product carrier (3) to the axis of the rotary tooling (5); The conveyor line (2) comprises two belt line assemblies, a slide rail (21) is arranged on the frame (1) along the X-axis, the two belt line assemblies are connected to the slide rail (21) in a sliding manner towards each other, the frame (1) is respectively provided with a screw nut subassembly (26) for driving each belt line assembly to slide, each belt line assembly comprises a belt line support (22) slidably connected to the slide rail (21), a first synchronous wheel (23) and a second synchronous wheel (24) respectively rotatably connected to both ends of the belt line support (22), and a synchronous belt (25) drivingly connected between the first synchronous wheel (23) and the second synchronous wheel (24); the two first synchronous wheels (23) are each provided with a polygonal shaft groove, a polygonal shaft (27) adapted thereto is provided in the polygonal shaft groove, a servo motor (28) for driving the polygonal shaft (27) to rotate is provided on the frame (1), each of the synchronous belts (25) is provided with the product carrier (3), and the two product carriers (3) located on the two synchronous belts (25) can be supported at two ends of the product respectively; A height adjustment head (64) is fixed on the detection bracket (63), and the spring slider (65) is fixed on the height adjustment head (64); The defective product separation mechanism (7) comprises a second truss (71) located above the conveyor line (2) and fixed on the frame (1), a second XZ-axis motion module (72) arranged on the second truss (71), and a clamping cylinder (73) fixed on the output end of the second XZ-axis motion module (72), wherein the inner sides of the two clamping jaws of the clamping cylinder (73) are respectively provided with clamping tips (74), and the two clamping tips (74) are coaxially arranged, and a defective product conveyor belt (75) is arranged on the frame (1) at the lower side of the second truss (71).

2. The camshaft eddy current testing machine according to claim 1, Features: The rotating claw disc assembly (53) comprises a claw disc support fixed on the output end of the first X-axis linear module (51), a claw disc motor fixed on the claw disc support, and a three-claw chuck fixed on the output end of the claw disc motor.

3. The camshaft eddy current testing machine according to claim 1, Features: An infrared sensor (8) for detecting whether a product is incoming is arranged on the frame (1) at the head end of the conveyor line (2).

4. The camshaft eddy current testing machine according to claim 1, Features: The lifting mechanism (9) comprises a lifting cylinder (91) fixed on the frame (1) and located below the conveyor line (2), and a contoured lifting block (92) fixed on the piston rod of the lifting cylinder (91).

5. The camshaft eddy current testing machine according to claim 1, Features: The detection end of the eddy current probe (66) is provided with a wear-resistant material.

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