A flaw detection device and method for high-precision steel forgings

Abstract

The application relates to the technical field of steel forging detection, and discloses a flaw detection equipment and flaw detection method for high-precision steel forgings, which comprises a base used for placing workpieces, a horizontal plate rotatably arranged on the base, a first mounting plate arranged below the horizontal plate and capable of being lifted, a rotating drum rotatably arranged below the first mounting plate, a positioning seat fixed to the surface of the rotating drum, a guide rod fixed to the surface of the positioning seat, an adjusting seat sleeved on the guide rod, a spray head rotatably arranged on the lower surface of the adjusting seat, and a probe arranged below the other side of the horizontal plate and used for flaw detection. When the coupling liquid is sprayed on the surface of the workpiece, the spray head can be made to swing left and right while performing circumferential rotation, so that the uniformity of the coupling liquid spraying is improved, the coupling liquid can more fully cover the surface of the workpiece, and the spraying effect is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel forging detection, in particular to a flaw detection equipment and method for high-precision steel forgings. BACKGROUND

[0002] After the production and processing of steel forgings, in order to detect the qualification of the steel forgings, the internal part of the steel forgings needs to be detected by an ultrasonic flaw detection equipment. During the flaw detection, a layer of coupling liquid needs to be sprayed on the surface of the steel forgings, which not only reduces the influence of air gap on the probe, but also facilitates the movement and scanning of the probe on the surface of the steel forgings, thereby reducing friction and probe wear. Therefore, the spraying effect of the coupling liquid is very important to the flaw detection work.

[0003] Currently, the spraying work of the coupling liquid is generally performed by an employee spraying the coupling liquid onto the surface of the steel forgings. During the operation of the employee, the spraying of the coupling liquid may not be uniform and sufficient, so there may be places on the surface of the steel forgings where the coupling liquid is not sprayed. When the probe performs the flaw detection work, the probe will move to the position where the coupling liquid is not sprayed, thereby affecting the flaw detection work and easily causing wear to the probe, thereby reducing the service life of the probe. SUMMARY

[0004] The present application provides a flaw detection equipment and method for high-precision steel forgings. The nozzle can perform left-right reciprocating swing while performing circumferential rotation to spray the coupling liquid, thereby increasing the uniformity and sufficiency of the spraying of the coupling liquid and solving the problem of insufficient uniformity and sufficiency of the spraying of the coupling liquid, which affects the flaw detection work and easily causes wear to the probe.

[0005] The present application provides the following technical solution: a flaw detection equipment for high-precision steel forgings, comprising a base for placing a workpiece, a horizontal plate rotatably arranged on the base, a first mounting plate arranged below the horizontal plate and liftable, a rotating drum rotatably arranged below the first mounting plate, a positioning seat fixed to the surface of the rotating drum, a guide rod fixed to the surface of the positioning seat, an adjusting seat sleeved on the guide rod, a nozzle rotatably arranged on the lower surface of the adjusting seat, and a probe for flaw detection arranged below the other side of the horizontal plate.

[0006] One side of the positioning seat is provided with an adjusting rod capable of reciprocating left and right, a transmission block is movably connected to the adjusting rod, a contact rod is arranged on the transmission block, and the end of the contact rod is movably connected with the nozzle. The adjusting rod drives the contact rod to reciprocate left and right, so that the nozzle performs left-right reciprocating swing.

[0007] As an optional scheme of the high-precision steel forging flaw detection equipment, the lower surface of the transverse plate is fixed with a first servo electric cylinder fixed with the first mounting plate, the first mounting plate is fixed with a first servo motor, the output end of the first servo motor is fixed with the rotating drum, the surface of the positioning seat is fixed with an electric push rod, and the output end of the electric push rod is fixed with the adjusting rod.

[0008] As an optional scheme of the high-precision steel forging flaw detection equipment, the adjusting seat is slidably connected with the guide rod, the surface of the adjusting seat is fixed with a first cross rod, the surface of the first cross rod is fixed with a first sliding rod, the lower surface of the first mounting plate is fixed with a disc, the lower surface of the disc is provided with a track groove for sliding of the first sliding rod, the surface of the positioning seat is fixed with a plurality of groups of transmission rods rotatably connected with each other, the surface of the adjusting seat is fixed with a positioning column, and the transmission rod is rotatably connected with the positioning column.

[0009] As an optional scheme of the high-precision steel forging flaw detection equipment, the surface of the guide rod is fixed with a first convex plate, the inside of the adjusting seat is provided with a first hydraulic oil groove, the inside of the first hydraulic oil groove is slidably provided with a first piston plate, the first piston plate and the first convex plate are fixed with a first connecting rod, the inside of the adjusting rod is provided with a second hydraulic oil groove in communication with the first hydraulic oil groove, the inside of the second hydraulic oil groove is elastically provided with a second piston plate, the surface of the adjusting rod is provided with a first sliding groove, the second sliding rod is slidably arranged in the first sliding groove and fixed with the transmission block, and the second sliding rod and the second piston plate are fixed with a second connecting rod.

[0010] As an optional scheme of the high-precision steel forging flaw detection equipment, the inside of the nozzle is provided with a first limiting groove, and the end of the abutting rod is fixed with a first limiting ball slidably arranged in the first limiting groove.

[0011] As an optional scheme of the high-precision steel forging flaw detection equipment, the surface of the first cross rod is fixed with a fixed block, the lower surface of the fixed block is slidably provided with a third sliding rod, the bottom end of the third sliding rod is fixed with a second cross rod, the lower surface of the second cross rod is provided with a pull rod, and the end of the pull rod is fixed with the abutting rod.

[0012] As an optional scheme of the high-precision steel forging flaw detection equipment, the lower surface of the fixed block is provided with a second sliding groove for sliding of the third sliding rod, the end of the third sliding rod is fixed with a sliding convex, and the inner wall of the second sliding groove is provided with an inclined groove for sliding of the sliding convex.

[0013] As an optional scheme of the flaw detection equipment for the high-precision steel forge piece, a second limiting ball is fixed to the top end of the pull rod, and a second limiting groove for sliding of the second limiting ball is formed in the second cross rod.

[0014] As an optional scheme of the flaw detection equipment for the high-precision steel forge piece, a spherical groove is formed in the first limiting ball, a third limiting ball is rotatably arranged in the spherical groove, a top rod is fixed to the surface of the third limiting ball, a slide is formed in the first limiting ball for deflection of the top rod, a receiving groove is formed in the spray head, and a blocking block is elastically connected in the receiving groove, and an inclined surface for abutting against the top rod is arranged on the surface of the blocking block.

[0015] As an optional scheme of the flaw detection equipment for the high-precision steel forge piece, a flaw detection method for the high-precision steel forge piece comprises the following steps.

[0016] S1. The spray head is lowered by the first mounting plate to move to a suitable position, and the spray head sprays the coupling liquid to the surface of the workpiece.

[0017] S2. The spray head is rotated by rotation of the rotating drum to perform circumferential spraying.

[0018] S3. When spraying, the spray head is swung left and right by left and right reciprocating movement of the adjusting rod to increase the spraying range and make the coupling liquid sprayed to the surface of the workpiece more sufficient.

[0019] S4. When the rotating drum rotates, the first cross rod moves to make the first slide rod slide along the track groove, and the adjusting seat slides on the guide rod to adjust the distance between the adjusting seats, thereby adjusting the spraying range of the spray head to prevent the coupling liquid from being sprayed to the outside of the workpiece.

[0020] S5. When the distance between the spray heads is adjusted, the abutting rod is pulled to slide up and down along the spray head to change the abutting position of the abutting rod and the spray head, so that the swing angle of the spray head is larger when the distance between the spray heads is larger.

[0021] S6. The opening size of the spray head is adjusted by up and down movement of the abutting rod, so that the opening size of the spray head is larger when the swing angle of the spray head is larger, thereby increasing the spraying effect.

[0022] S7. After the coupling liquid is sprayed, the cross plate is rotated by 180° to make the probe detect the workpiece sprayed with the coupling liquid, and the workpiece is replaced after detection, and the spray head sprays the coupling liquid to another group of workpieces, so that the two are alternately performed to increase the work efficiency.

[0023] The present application has the following advantages:

[0024] 1. The high-precision steel forging flaw detection equipment and method, the rotating drum drives the nozzle to rotate in a circle, the nozzle sprays the coupling liquid on the workpiece, and the left and right reciprocating movement of the adjusting rod drives the transmission block to move, the transmission block drives the nozzle to swing left and right through the abutting rod, thereby improving the uniformity and fullness of the nozzle spraying, reducing the situation that the coupling liquid cannot be sprayed on the surface of the workpiece, facilitating subsequent flaw detection, and reducing the problem of probe wear.

[0025] 2. The high-precision steel forging flaw detection equipment and method, the rotating drum drives the nozzle to rotate in a circle, the first cross rod drives the first sliding rod to slide along the track groove, so that the first sliding rod can drive the first cross rod to move left and right, the first cross rod drives the outermost adjusting seat to move left and right, through the action of the multiple groups of transmission rods connected with each other, when the outermost adjusting seat moves left and right, the distance between the multiple groups of adjusting seats can be adjusted, thereby adjusting the distance between the nozzles, so that the spraying range of the nozzles can change along with the track of the edge of the workpiece, so that the coupling liquid can always be sprayed on the surface of the workpiece when the nozzle rotates in a circle, and will not be sprayed on the outside of the workpiece, thereby reducing the waste of the coupling liquid and further improving the spraying effect.

[0026] 3. The high-precision steel forging flaw detection equipment and method, when the distance between the nozzles is adjusted, the first cross rod drives the fixed block to move, so that the pull rod can move up and down, the pull rod moves up and down to drive the abutting rod to move up and down, thereby changing the abutting position of the abutting rod to the nozzle, so that the distance between the nozzles becomes smaller, and the swing amplitude of the nozzle also becomes smaller, thereby avoiding the mutual influence of the coupling liquid sprayed by adjacent nozzles, and the situation of repeated spraying, in addition, when the abutting rod moves up and down, the abutting rod drives the first limiting ball to slide along the first limiting groove, so that the first limiting ball drives the top rod to move, the top rod abuts against the blocking block, the blocking block moves out of the storage groove, thereby changing the opening size of the nozzle, so that the spraying process of the coupling liquid can automatically adjust the opening size of the nozzle according to the different positions of the workpiece, thereby facilitating the adjustment of the spraying amount of the coupling liquid, reducing the waste of the coupling liquid, and further improving the spraying effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the application.

[0028] Figure 2 It is an enlarged view of A in the application. Figure 1

[0029] Figure 3 It is a top view of the adjusting seat part in the application. Figure 2

[0030] Figure 4 ​​Structure diagram of the adjusting seat and the adjusting rod part in the present application Figure 2 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0031] Figure 5 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0032] Figure 6 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0033] Figure 7 Structure diagram of the adjusting seat and the adjusting rod part in the present application Figure 6 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0034] Figure 8 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0035] Figure 9 Structure diagram of the adjusting seat and the adjusting rod part in the present application Figure 8 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0036] Figure 10 Structure diagram of the adjusting seat and the adjusting rod part in the present application Figure 9 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0037] Figure 11 Structure diagram of the adjusting seat and the adjusting rod part in the present application Figure 9 Structure diagram of the adjusting seat and the adjusting rod part in the present application

[0038] Figure: 1, workpiece; 2, base; 3, cross plate; 4, first mounting plate; 5, rotating drum; 6, positioning seat; 7, guide rod; 8, adjusting seat; 9, spray head; 10, probe; 11, adjusting rod; 12, transmission block; 13, abutting rod; 14, first servo cylinder; 15, first servo motor; 16, electric push rod; 17, first cross rod; 18, first sliding rod; 19, disc; 20, track groove; 201, inner moving part; 202, outer moving part; 21, transmission rod; 22, positioning column; 23, first convex plate; 24, first hydraulic oil groove; 25, first piston plate; 26, first connecting rod; 27, second hydraulic oil groove; 28, second piston plate; 29, first sliding groove; 30, second sliding rod; 31, second connecting rod; 32, first limiting groove; 33, first limiting ball; 34, fixed block; 35, third sliding rod; 36, second cross rod; 37, pull rod; 38, second sliding groove; 39, sliding convex; 40, inclined groove; 41, second limiting ball; 42, second limiting groove; 43, spherical groove; 44, third limiting ball; 45, jacking rod; 46, slide; 47, storage groove; 48, plugging block; 49, inclined surface; 50, second servo motor; 51, stand column; 52, second servo cylinder; 53, third servo motor; 54, third servo cylinder; 55, oil guide pipe; 56, fourth limiting ball; 57, third limiting groove; 58, first spring; 59, second convex plate; 60, second spring. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of embodiments of the present application, rather than all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0040] Embodiment one, please refer to Figures 1-11 A flaw detection equipment for high-precision steel forgings, comprising a base 2 for placing a workpiece 1, a horizontal plate 3 rotatably arranged on the base 2, a first mounting plate 4 arranged below the horizontal plate 3 and capable of being lifted, a rotating drum 5 rotatably arranged below the first mounting plate 4, a positioning seat 6 fixed on the surface of the rotating drum 5, a guide rod 7 fixed on the surface of the positioning seat 6, an adjusting seat 8 sleeved on the guide rod 7, a spray head 9 rotatably arranged on the lower surface of the adjusting seat 8, and a probe 10 for flaw detection arranged below the other side of the horizontal plate 3;

[0041] A adjusting rod 11 capable of reciprocating left and right is arranged on one side of the positioning seat 6, a transmission block 12 is movably connected to the adjusting rod 11, a contact rod 13 is arranged on the transmission block 12, the end of the contact rod 13 is movably connected with the spray head 9, and the adjusting rod 11 drives the contact rod 13 to reciprocate left and right so that the spray head 9 swings left and right.

[0042] A first servo cylinder 14 is fixed with the first mounting plate 4 on the lower surface of the horizontal plate 3, a first servo motor 15 is fixed on the first mounting plate 4, the output end of the first servo motor 15 is fixed with the rotating drum 5, an electric push rod 16 is fixed on the surface of the positioning seat 6, and the output end of the electric push rod 16 is fixed with the adjusting rod 11.

[0043] A first limiting groove 32 is arranged in the interior of the spray head 9, a first limiting ball 33 is fixed on the end of the contact rod 13, and the first limiting ball 33 is slidably arranged in the first limiting groove 32.

[0044] In the technical solution, when the workpiece 1 is inspected, the first servo cylinder 14 pushes the first mounting plate 4 to move downward, driving the spray head 9 to move downward to a suitable position, the spray head 9 is externally connected with a liquid supply tank for providing coupling liquid, the spray head 9 is opened, the spray head 9 sprays the coupling liquid to the surface of the workpiece 1, meanwhile, the first servo motor 15 drives the rotating drum 5 to rotate, the rotating drum 5 drives the spray head 9 to rotate circumferentially, so that the spray head 9 circumferentially sprays the workpiece 1, after the coupling liquid spraying is completed, the first servo cylinder 14 is reset, the second servo motor 50 fixed on the surface of the base 2 drives the vertical column 51 to rotate, the vertical column 51 drives the horizontal plate 3 to rotate by 180°, so that the positions of the probe 10 and the spray head 9 are exchanged, then the probe 10 is adjusted to a suitable position, the workpiece 1 is inspected, and the spray head 9 sprays the coupling liquid to another group of workpieces 1 after rotating by 180°, so that the spraying and the inspection are alternately performed, and the work efficiency is improved.

[0045] The probe 10 is provided with the second servo cylinder 52, the third servo motor 53 and the third servo cylinder 54, which are used for lifting, rotating and horizontally moving the probe 10, and the lifting, rotating and horizontally moving of the probe 10 are prior art and are not the innovation points of the present application, and are not described in detail.

[0046] In order to improve the uniformity and sufficiency of the coupling liquid spraying, when the rotating drum 5 drives the spray head 9 to rotate circumferentially, as shown in Figure 2 , the telescopic movement of the electric push rod 16 drives the adjusting rod 11 to reciprocate leftward and rightward, the adjusting rod 11 drives the transmission block 12 and the abutting rod 13 to reciprocate leftward and rightward, the abutting rod 13 drives the spray head 9 to swing leftward and rightward, so that the spraying effect is improved, and when the spray head 9 swings leftward and rightward, the first limiting ball 33 slides in the first limiting groove 32, so that the abutting rod 13 and the spray head 9 will not be stuck.

[0047] In the embodiment two, when the coupling liquid is sprayed to the workpiece 1, the outer spray head 9 may spray to the outside of the workpiece 1 when the spray head 9 rotates circumferentially, so that the coupling liquid is wasted, and in order to solve the problem, the embodiment is improved on the basis of the embodiment one, and details can be referred to Figures 1-11 , the adjusting seat 8 is slidably connected with the guide rod 7, the first cross rod 17 is fixed on the surface of the adjusting seat 8, the first sliding rod 18 is fixed on the surface of the first cross rod 17, the lower surface of the first mounting plate 4 is fixed with the disc 19, the lower surface of the disc 19 is provided with the track groove 20 for sliding of the first sliding rod 18, the surface of the positioning seat 6 is fixed with the transmission rods 21 which are rotationally connected with each other, the surface of the adjusting seat 8 is fixed with the positioning column 22, and the transmission rods 21 are rotationally connected with the positioning column 22.

[0048] The surface of the guide rod 7 is fixed with a first protruding plate 23, the inside of the adjusting seat 8 is provided with a first hydraulic oil groove 24, the inside of the first hydraulic oil groove 24 is slidably provided with a first piston plate 25, the first piston plate 25 and the first protruding plate 23 are fixedly connected with a first connecting rod 26, the inside of the adjusting rod 11 is provided with a second hydraulic oil groove 27 in communication with the first hydraulic oil groove 24, the inside of the second hydraulic oil groove 27 is elastically provided with a second piston plate 28, the surface of the adjusting rod 11 is provided with a first sliding groove 29, the first sliding groove 29 is slidably provided with a second sliding rod 30 fixedly connected with the transmission block 12, and the second sliding rod 30 and the second piston plate 28 are fixedly connected with a second connecting rod 31.

[0049] In the technical solution, the structure of the workpiece 1 is as shown in Figure 1 The spraying range of the nozzle 9 first covers the largest radius, but when the nozzle 9 performs the circumferential movement, the radius of the workpiece 1 changes from large to small, so that the outer nozzles 9 may spray to the outside of the workpiece 1, therefore, the first cross rod 17 is driven to rotate while the rotating drum 5 drives the nozzles 9 to rotate, the first cross rod 17 drives the first sliding rod 18 to slide along the track groove 20, the structure of the track groove 20 is as shown in Figure 5 The track groove 20 includes an inner moving part 201 and an outer moving part 202 which are connected, when the first sliding rod 18 slides along the inner moving part 201 of the track groove 20, as shown in Figure 2 The first cross rod 17 pulls the rightmost adjusting seat 8 to move leftwards, through the action of the multiple sets of transmission rods 21 which are rotatably connected with each other, the multiple sets of adjusting seats 8 are all moved leftwards, so that the distance between the multiple sets of adjusting seats 8 is shortened, when the first sliding rod 18 slides along the outer moving part 202, the distance between the multiple sets of adjusting seats 8 is lengthened, and the track of the track groove 20 is the same as the edge track of the workpiece 1, so that the movement track of the outermost adjusting seat 8 is the same as the edge track of the workpiece 1, thereby avoiding the possibility that the coupling liquid sprayed by the nozzles 9 is sprayed to the outside of the workpiece, and reducing the waste of the coupling liquid;

[0050] As shown in Figure 3 Through the multiple sets of transmission rods 21 which are rotatably connected with each other, when the multiple sets of adjusting seats 8 move leftwards and rightwards, the distance between the adjacent adjusting seats 8 is the same, so that the distance between the adjacent nozzles 9 is also the same, thereby when the distance between the nozzles 9 is adjusted, the uniformity of the spraying can also be ensured, and the spraying effect is improved; in addition, in order to make the distance between the adjacent adjusting seats 8 the same, the movement mode of the multiple sets of adjusting seats 8 is that, as shown in Figure 4 The displacement of the adjusting seat 8 from right to left gradually decreases;

[0051] In the technical solution, when the first cross rod 17 adjusts the distance between the adjusting seats 8, as shown in Figure 4As shown, firstly, the adjusting seat 8 moves to the left relative to the guide rod 7, causing the first convex plate 23 to slide to the right relative to the adjusting seat 8. An oil guide pipe 55 is provided between the first hydraulic oil tank 24 and the second hydraulic oil tank 27. The first convex plate 23 drives the first piston plate 25 to slide to the right through the first connecting rod 26. The first piston plate 25 fills the hydraulic oil inside the first hydraulic oil tank 24 into the second hydraulic oil tank 27 through the oil guide pipe 55, causing the second piston plate 28 to move to the left. The second piston plate 28 drives the second sliding rod 30 to move to the left through the second connecting rod 31. The second sliding rod 30 drives the transmission block 12 to move to the left, so that the distance the transmission block 12 moves to the left is the same as the distance the adjusting seat 8 moves to the left, thereby keeping the position between the contact rod 13 and the nozzle 9 unchanged, so as not to affect the contact rod 13 driving the nozzle 9 to swing back and forth.

[0052] In addition, such as Figure 4 As shown, when the first crossbar 17 adjusts the spacing of the adjusting seats 8, the rightmost adjusting seat 8 has the largest displacement, and the displacement of the adjusting seats 8 gradually decreases from right to left. Therefore, the sliding position of the first protrusion 23 inside each adjusting seat 8 relative to the adjusting seat 8 also gradually decreases from right to left. This makes the distance that the corresponding transmission block 12 moves when each set of adjusting seats 8 moves different, so that the displacement of the transmission block 12 from right to left is the same as the displacement of the corresponding adjusting seat 8, which also gradually decreases. This keeps the position between the abutment rod 13 and the nozzle 9 unchanged, so as not to affect the abutment rod 13 driving the nozzle 9 to swing back and forth.

[0053] A first spring 58 is provided between the inner wall of the second piston plate 28 and the second hydraulic oil groove 27. The first spring 58 is used to reset the second piston plate 28. When the adjusting seat 8 moves to the right to reset, the hydraulic oil inside the second hydraulic oil groove 27 is filled into the first hydraulic oil groove 24. In this application, each set of adjusting seats 8 drives a set of transmission blocks 12 to move, so that the displacement of each set of adjusting seats 8 and the corresponding transmission block 12 is the same and they do not interfere with each other.

[0054] In Example 3, during the adjustment of the spacing between the nozzles 9, when the spacing between the nozzles 9 decreases, because the nozzles 9 are in a left-right swinging state, initially the spacing between the nozzles 9 is relatively large, and adjacent nozzles 9 will not touch each other, so the spraying work will not affect each other. When the spacing between the nozzles 9 decreases, the swing amplitude of the nozzles 9 remains unchanged, causing the coupling liquid sprayed onto the surface of the workpiece 1 to be repeated, resulting in repeated spraying and reducing the spraying effect. This example is an improvement on Example 2. For details, please refer to Example 2. Figures 1-11The surface of the first cross rod 17 is fixed with a fixed block 34, the lower surface of the fixed block 34 is slidably provided with a third sliding rod 35, the bottom end of the third sliding rod 35 is fixed with a second cross rod 36, the lower surface of the second cross rod 36 is provided with a pull rod 37, and the end of the pull rod 37 is fixed with the abutting rod 13;

[0055] The lower surface of the fixed block 34 is provided with a second sliding groove 38 for sliding of the third sliding rod 35, the end of the third sliding rod 35 is fixed with a sliding protrusion 39, and the inner wall of the second sliding groove 38 is provided with an inclined groove 40 for sliding of the sliding protrusion 39;

[0056] The top end of the pull rod 37 is fixed with a second limiting ball 41, and the inside of the second cross rod 36 is provided with a second limiting groove 42 for sliding of the second limiting ball 41.

[0057] In the technical scheme, as shown in the figure, Figure 8 When the distance between the nozzle 9 driven by the adjusting seat 8 is reduced, the first cross rod 17 drives the fixed block 34 to move to the left, so that the third sliding rod 35 slides to the right along the second sliding groove 38, the third sliding rod 35 drives the sliding protrusion 39 to slide along the inclined groove 40, so that the sliding protrusion 39 drives the third sliding rod 35 to move downward, the third sliding rod 35 drives the second cross rod 36 to move downward, the second cross rod 36 drives the pull rod 37 to move downward, the pull rod 37 drives the abutting rod 13 to slide downward, and the abutting rod 13 drives the first limiting ball 33 to slide downward along the first limiting groove 32, so as to change the abutting position of the abutting rod 13 to the nozzle 9, and after the abutting position of the abutting rod 13 to the nozzle 9 is lowered, the swing amplitude of the nozzle 9 is reduced under the same horizontal displacement of the abutting rod 13, so as to reduce the swing amplitude of the nozzle 9 while reducing the distance between the nozzles 9, thereby avoiding mutual influence of the coupled liquid sprayed by the adjacent nozzles 9 and the repeated spraying situation.

[0058] In the technical scheme, the second limiting ball 41 can only slide horizontally along the second limiting groove 42, so that the abutting rod 13 can drive the pull rod 37 to reciprocate left and right without being stuck, and the second limiting ball 41 cannot slide out of the second limiting groove 42, so that the second cross rod 36 can drive the pull rod 37 to move up and down when moving up and down; in addition, the end of the abutting rod 13 is fixed with a fourth limiting ball 56, the inside of the transmission block 12 is provided with a third limiting groove 57 for upward and downward sliding of the fourth limiting ball 56, so that the abutting rod 13 can drive the fourth limiting ball 56 to slide upward and downward along the third limiting groove 57 when moving upward and downward, thereby avoiding the stuck situation.

[0059] In the fourth embodiment, although the swing range of the spray head 9 is reduced when the distance between the spray heads 9 is reduced, the amount of coupling liquid sprayed by the spray head 9 remains unchanged. Since the distance between the spray heads 9 is reduced, the spraying area of the workpiece 1 is reduced, and the demand for coupling liquid is also reduced. If the spraying amount according to the maximum radius is continued, when the radius of the workpiece 1 is reduced, more coupling liquid will be sprayed, resulting in waste of coupling liquid. To solve this problem, the fourth embodiment is improved on the basis of the third embodiment. For details, please refer to Figures 1-11 The first limiting ball 33 is internally provided with a spherical groove 43, the third limiting ball 44 is rotationally arranged in the spherical groove 43, the third limiting ball 44 is fixedly provided with a top rod 45, the first limiting ball 33 is provided with a slide 46 for deflecting the top rod 45, and the spray head 9 is internally provided with a receiving groove 47, and the receiving groove 47 is elastically connected with a blocking block 48, and the surface of the blocking block 48 is provided with an inclined surface 49 which is in contact with the top rod 45.

[0060] In the technical solution, when the contact rod 13 drives the first limiting ball 33 to move downward along the first limiting groove 32, the first limiting ball 33 drives the top rod 45 to move downward, so that the top rod 45 is in contact with the inclined surface 49, the blocking block 48 is driven to move to the right, and the blocking block 48 is moved out of the receiving groove 47, so that the opening of the discharge port of the spray head 9 is gradually reduced, and the amount of coupling liquid sprayed is gradually reduced, so as to adapt to the condition that the radius of the workpiece 1 gradually decreases, and the waste of coupling liquid is reduced.

[0061] In the technical solution, the second protruding plate 59 is fixedly arranged on the blocking block 48, the second protruding plate 59 is slidingly arranged in the spray head 9, the second spring 60 is arranged between the second protruding plate 59 and the inner wall of the spray head 9, and the second spring 60 is elastically arranged in the spray head 9. When the top rod 45 moves upward, the blocking block 48 is retracted into the receiving groove 47. In addition, the third limiting ball 44, the spherical groove 43 and the slide 46 are arranged, so that the top rod 45 can deflect by a certain angle relative to the first limiting ball 33, so that when the contact rod 13 drives the spray head 9 to swing left and right, the top rod 45 and the first limiting ball 33 will not be stuck.

[0062] In the fifth embodiment, the fourth embodiment is improved. For details, please refer to Figures 1-11 A flaw detection method for high-precision steel forgings, comprising the following steps:

[0063] S1. The first mounting plate 4 is lowered to drive the spray head 9 to descend, and the spray head 9 is moved to a suitable position, so that the spray head 9 sprays coupling liquid to the surface of the workpiece 1;

[0064] S2. The rotating drum 5 is rotated to drive the spray head 9 to rotate, so that the spray head 9 performs circumferential spraying;

[0065] S3. When spraying, the spray head 9 swings left and right by adjusting the left and right reciprocating movement of the rod 11, increasing the spraying range, and making the coupling liquid sprayed on the surface of the workpiece 1 more sufficient;

[0066] S4. When the rotating drum 5 rotates, the first cross rod 17 moves, the first sliding rod 18 slides along the track groove 20, the adjusting seat 8 slides on the guide rod 7, the spacing between the multiple adjusting seats 8 is adjusted, and the spraying range of the spray head 9 is adjusted, so that the coupling liquid is not sprayed to the outside of the workpiece 1;

[0067] S5. When the spacing of the spray head 9 is adjusted, the contact rod 13 is pulled to slide up and down along the spray head 9, the contact position of the contact rod 13 and the spray head 9 is changed, and the swing angle of the spray head 9 is larger when the spacing is larger;

[0068] S6. The opening size of the spray head 9 is adjusted by the up and down movement of the contact rod 13, the opening size of the spray head 9 is larger when the swing angle of the spray head 9 is larger, and the spraying effect is increased;

[0069] S7. After the coupling liquid is sprayed, the horizontal plate 3 is rotated by 180°, the probe 10 detects the workpiece 1 sprayed with the coupling liquid, the workpiece 1 is replaced after the detection is completed, and the spray head 9 sprays the coupling liquid on another group of workpieces 1, which are alternately performed to increase the work efficiency.

[0070] In the technical solution, when the workpiece 1 is sprayed with the coupling liquid, the spraying can be performed according to the shape of the workpiece 1, the sufficiency of the coupling liquid spraying is increased, the waste of the coupling liquid is reduced, the spraying effect is better, and the work efficiency of the detection is improved by alternately performing the coupling liquid spraying and the detection.

[0071] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0072] The above description is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A high-precision flaw detection device for steel forgings, comprising a base (2) for placing the workpiece (1), characterized in that: A horizontal plate (3) is rotatably mounted on the base (2). A first mounting plate (4) that can be raised and lowered is mounted below the horizontal plate (3). A rotating cylinder (5) is rotatably mounted below the first mounting plate (4). A positioning seat (6) is fixed on the surface of the rotating cylinder (5). A guide rod (7) is fixed on the surface of the positioning seat (6). An adjusting seat (8) is sleeved on the guide rod (7). A nozzle (9) is rotatably mounted on the lower surface of the adjusting seat (8). A probe (10) for flaw detection is mounted below the other side of the horizontal plate (3). The positioning seat (6) has an adjusting rod (11) that can move back and forth left and right on one side. A transmission block (12) is connected to the adjusting rod (11). A contact rod (13) is provided on the transmission block (12). The end of the contact rod (13) is movably connected to the nozzle (9). The adjusting rod (11) drives the contact rod (13) to move back and forth left and right, causing the nozzle (9) to swing back and forth left and right. The lower surface of the horizontal plate (3) is fixed with a first servo electric cylinder (14) which is fixed to the first mounting plate (4). The first mounting plate (4) is fixed with a first servo motor (15). The output end of the first servo motor (15) is fixed to the rotating drum (5). The surface of the positioning seat (6) is fixed with an electric push rod (16). The output end of the electric push rod (16) is fixed to the adjusting rod (11). The adjusting seat (8) is slidably connected to the guide rod (7). A first crossbar (17) is fixed on the surface of the adjusting seat (8). A first slide rod (18) is fixed on the surface of the first crossbar (17). A disc (19) is fixed on the lower surface of the first mounting plate (4). A track groove (20) for the first slide rod (18) to slide is opened on the lower surface of the disc (19). Multiple sets of transmission rods (21) are fixed on the surface of the positioning seat (6). A positioning column (22) is fixed on the surface of the adjusting seat (8). The transmission rod (21) is rotatably connected to the positioning column (22). The guide rod (7) has a first convex plate (23) fixed on its surface. The adjusting seat (8) has a first hydraulic oil groove (24) inside. A first piston plate (25) is slidably arranged inside the first hydraulic oil groove (24). A first connecting rod (26) is fixed between the first piston plate (25) and the first convex plate (23). The adjusting rod (11) has a second hydraulic oil groove (27) inside that communicates with the first hydraulic oil groove (24). A second piston plate (28) is elastically arranged inside the second hydraulic oil groove (27). The adjusting rod (11) has a first sliding groove (29) on its surface. A second sliding rod (30) fixed to the transmission block (12) is slidably arranged in the first sliding groove (29). A second connecting rod (31) is fixed between the second sliding rod (30) and the second piston plate (28).

2. The high-precision flaw detection equipment for steel forgings according to claim 1, characterized in that: The nozzle (9) has a first limiting groove (32) inside, and the end of the abutment rod (13) is fixed with a first limiting ball (33), which is slidably disposed in the first limiting groove (32).

3. The high-precision flaw detection equipment for steel forgings according to claim 2, characterized in that: A fixing block (34) is fixed on the surface of the first crossbar (17). A third slide rod (35) is slidably arranged on the lower surface of the fixing block (34). A second crossbar (36) is fixed at the bottom end of the third slide rod (35). A pull rod (37) is arranged on the lower surface of the second crossbar (36). The end of the pull rod (37) is fixed to the abutment rod (13).

4. The high-precision flaw detection equipment for steel forgings according to claim 3, characterized in that: The lower surface of the fixed block (34) is provided with a second sliding groove (38) for the sliding of the third sliding rod (35), and a sliding protrusion (39) is fixed at the end of the third sliding rod (35). The inner wall of the second sliding groove (38) is provided with an inclined groove (40) for the sliding protrusion (39) to slide.

5. The high-precision flaw detection equipment for steel forgings according to claim 4, characterized in that: The top end of the pull rod (37) is fixed with a second limiting ball (41), and the interior of the second crossbar (36) is provided with a second limiting groove (42) for the second limiting ball (41) to slide.

6. The high-precision flaw detection equipment for steel forgings according to claim 5, characterized in that: The first limiting ball (33) has a spherical groove (43) inside, and a third limiting ball (44) is rotatably arranged inside the spherical groove (43). A top rod (45) is fixed on the surface of the third limiting ball (44). A slide (46) for the top rod (45) to deflect is provided on the first limiting ball (33). A receiving groove (47) is provided inside the nozzle (9). A sealing block (48) is elastically connected inside the receiving groove (47). The surface of the sealing block (48) is provided with an inclined surface (49) that abuts against the top rod (45).

7. A method for flaw detection of high-precision steel forgings, characterized in that: The high-precision flaw detection equipment for steel forgings according to any one of claims 1-6 comprises the following steps: S1. The first mounting plate (4) descends to drive the nozzle (9) down, move the nozzle (9) to a suitable position, and spray coupling liquid onto the surface of the workpiece (1); S2. The rotating drum (5) drives the nozzle (9) to rotate, so that the nozzle (9) performs circumferential spraying; S3. During spraying, the nozzle (9) is made to swing back and forth by adjusting the rod (11) to increase the spraying range and make the coupling liquid sprayed on the surface of the workpiece (1) more fully. S4. When the drum (5) rotates, it drives the first crossbar (17) to move, causing the first slide bar (18) to slide along the track groove (20), so that the adjustment seat (8) slides on the guide rod (7), and adjusts the distance between multiple sets of adjustment seats (8), thereby adjusting the spraying range of the nozzle (9) so that the coupling liquid will not spray onto the outside of the workpiece (1). S5. When adjusting the distance between the nozzles (9), pull the abutment rod (13) so that the abutment rod (13) slides up and down along the nozzle (9) to change the contact position between the abutment rod (13) and the nozzle (9) so that the swing angle between the nozzles (9) is greater when the distance is greater. S6. By moving the abutment rod (13) up and down, the size of the nozzle (9) opening is adjusted so that the larger the angle of the nozzle (9) swing, the larger the opening, thus increasing the spraying effect; S7. After the coupling liquid is sprayed, the horizontal plate (3) is rotated 180° so that the probe (10) can perform flaw detection on the workpiece (1) sprayed with coupling liquid. After the flaw detection is completed, the workpiece (1) is replaced. At the same time, the nozzle (9) sprays coupling liquid on another set of workpieces (1). The two are carried out alternately to increase work efficiency.

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