CN219057786U - Automatic device for depth detection of crankshaft hardening layer - Google Patents

Abstract

The utility model belongs to the field of crankshaft manufacturing detection equipment, and particularly relates to an automatic device for detecting the depth of a crankshaft hardening layer, which comprises a detection station and an ultrasonic detection assembly, and is characterized in that the detection station is provided with a water tank for containing a coupling agent, a liftable crankshaft bracket is arranged in the water tank, a mechanical arm with multiple degrees of freedom is arranged beside the water tank, the ultrasonic detection assembly is arranged at the tail end of the mechanical arm, the ultrasonic detection assembly comprises a detection head, a protection frame and a buffer spring, the upper end of the detection head is movably arranged at the tail end of the mechanical arm, the protection frame is in a hollow cover shape, the opening of the protection frame is downward, the top end of the protection frame is connected with the middle part of the detection head, the bottom end of the detection head is positioned in the protection frame, the bottom end of the detection head is higher than the bottom edge of the protection frame, the buffer spring is sleeved at the upper part of the detection head, the top end surface of the buffer spring is abutted against the mechanical arm, and the bottom end surface of the buffer spring is abutted against the protection frame. The utility model realizes the replacement of manual detection, improves the working efficiency and is beneficial to realizing the automatic production of the crankshaft.

Description

Automatic device for depth detection of crankshaft hardening layer

Technical Field

The utility model belongs to the field of crankshaft manufacturing detection equipment, and particularly relates to an automatic device for detecting the depth of a crankshaft hardening layer.

Background

The crankshaft is the core of the engine, and how to maintain or even improve the fatigue strength of the crankshaft while the structure is light becomes an important direction of crankshaft development, so that ensuring proper depth of hardening layer is one of the key factors for achieving the strengthening effect of the crankshaft. The current detection method of the depth of the crankshaft hardening layer comprises a metallographic method, a gradient hardness method, an ultrasonic nondestructive detection method and the like. The metallographic method and the gradient hardness method need to cut and destroy the crankshaft, and the requirements of mass production and quality control of the crankshaft cannot be met through the steps of cutting, sample preparation, grinding and corrosion, depth measurement and the like, and the method has the advantages of high cost, long detection period and complicated steps. The existing ultrasonic nondestructive testing method for the depth of the hardening layer generally adopts glycerin as a coupling agent, does not need to damage detection, and reduces the testing cost of the crankshaft to a certain extent, however, the existing ultrasonic nondestructive testing method can be used for coating the coupling agent on the crankshaft, holding ultrasonic testing heads tightly attached to the testing positions and testing the depths of the testing positions one by one, and the manual testing method cannot be matched with the automatic production mode of the crankshaft, so that the efficiency of the whole crankshaft production line is reduced, and the automatic application trend of the crankshaft production line cannot be adapted.

Disclosure of Invention

The utility model aims to provide an automatic device for detecting the depth of a quenching layer of a crankshaft, which is used for realizing the matching of the detection of the depth of the quenching layer of the crankshaft and the automation of the whole crankshaft production line and improving the production efficiency of the crankshaft.

The technical scheme for achieving the purpose comprises the following steps.

The utility model provides an automatic device is detected to bent axle hardening layer degree of depth, includes detection station, ultrasonic detection subassembly, the detection station is equipped with the basin that holds the couplant, installs the crank bracket of liftable in the basin, and the basin next door is equipped with multi freedom's arm, ultrasonic detection subassembly installs in the end of arm, and ultrasonic detection subassembly includes detection head, fender bracket and buffer spring, and detection head is column and vertical setting, and the upper end movable mounting of detection head is at the arm end, and the fender bracket is cavity cover form, and the fender bracket opening is down, and the fender bracket top links to each other with the middle part of detection head, and the bottom of detection head is located inside the fender bracket, and the bottom of detection head is higher than the bottom edge of fender bracket, buffer spring suit is in detection head upper portion, and the top face butt arm of buffer spring, its bottom face butt fender bracket.

Further, the crankshaft bracket comprises a lifter and a supporting frame, the lifter comprises a servo motor and a screw rod mechanism driven by the servo motor, the screw rod mechanism comprises a vertically arranged screw rod and a sliding block arranged on the screw rod, the supporting frame comprises a connecting plate horizontally arranged and two vertical plates arranged in the middle of the connecting plate at intervals, a groove for accommodating the neck of a crankshaft main shaft is formed in the top end of each vertical plate, and the connecting plate is connected with the sliding block on the screw rod mechanism.

Further, two ends of the water tank are respectively provided with a set of screw rod mechanism, and two ends of the connecting plate are respectively connected with the sliding blocks of the screw rod mechanism.

Further, an upper limiting block and a lower limiting block which limit the lifting stroke of the connecting plate are arranged on the inner wall of the water tank. Ensuring that the crankshaft is lifted to an accurate position.

Further, the bottom end of the detection head is 0.2-0.5cm higher than the bottom edge of the protection frame.

The automatic device for detecting the depth of the quenching layer of the crankshaft is arranged in the whole automatic production line of the crankshaft, and receives the previous working procedure, the crankshaft to be detected is clamped by a carrying mechanical arm and carried above a water tank of a detection station, after the crankshaft to be detected is placed on a crankshaft bracket in the water tank, the surface to be detected of the crankshaft to be detected faces upwards at the moment, the carrying mechanical arm leaves the detection station, the crankshaft bracket descends until the surface to be detected of the crankshaft to be detected is fully immersed below the liquid level of the couplant in the water tank and is enough to ensure the immersion depth of the detection head, the detection mechanical arm carries an ultrasonic detection assembly to move above the crankshaft, after the detection mechanical arm positions the surface to be detected of the crankshaft, the detection head is ensured to descend after being aligned with the initial part of the surface to be detected, after the border butt of protection frame bottom waits to examine the face, detection head lower extreme also submergence is this moment under the liquid level of couplant, detect head ultrasonic wave begins to detect, detect the axle journal, detect left and right side fillet again, in the detection, under the buffering spring effect, ultrasonic wave detection subassembly butt detection face all the time, ensure the unanimous distance of detection head and detection face, be favorable to guaranteeing stable detection quality, it finishes to drive ultrasonic wave detection subassembly through the lift translation action with all positions of waiting to examine of bent axle, detect the arm and rise to the basin top, and remove to basin one side, the bent axle bracket rises and lifts the bent axle from the couplant, the transport arm removes to the basin top, press from both sides and get the bent axle of finishing and shift it to next station. Thus, the depth detection process of the quenching layer of the crankshaft is completed.

According to the automatic device for detecting the depth of the quenching layer of the crankshaft, the water tank is used for containing the coupling agent, so that the surface to be detected of the crankshaft is immersed below the liquid level of the coupling agent during detection, air between a probe and the detected crankshaft can be effectively discharged, ultrasonic energy is effectively transmitted into the crankshaft, sufficient sound intensity transmittance on the detection surface is ensured, and detection quality can be effectively ensured.

The automatic device for detecting the depth of the quenching layer of the crankshaft can complete the detection of the depth of the quenching layer of the crankshaft by combining the mechanical arm and the ultrasonic detection assembly, replaces manual detection, improves the working efficiency and is beneficial to realizing the automatic production of the crankshaft.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an automated device for depth detection of a crankshaft hardening layer;

FIG. 2 is a block diagram of a sink apparatus of an embodiment;

FIG. 3 is a schematic view of the ultrasonic detection assembly detecting the surface of the crankshaft.

In the figure, 1. A mechanical arm; 2. an ultrasonic detection assembly; 2-1, detecting a head; 2-2, a protection frame; 2-3, a buffer spring; 3. a water tank; 3-1, limiting blocks; 4. a lifter; 5. a support frame; 6. and (3) a crankshaft.

Detailed Description

The present utility model will be specifically described with reference to examples.

Referring to fig. 1 to 3, an automatic device for detecting depth of a quenching layer of a crankshaft comprises a detection station and an ultrasonic detection assembly 2, wherein the detection station is provided with a water tank 3 for containing a coupling agent, a liftable crankshaft bracket is arranged in the water tank 3, the crankshaft bracket comprises a lifter 4 and a support frame 5, the lifter 4 comprises a servo motor and a screw rod mechanism driven by the servo motor, the screw rod mechanism comprises a vertically arranged screw rod and a sliding block arranged on the screw rod, the support frame 5 comprises a connecting plate horizontally arranged and two vertical plates arranged in the middle of the connecting plate at intervals, the top end of each vertical plate is provided with a groove for accommodating the neck of a main shaft of a crankshaft 6, the connecting plate is connected with the sliding block on the screw rod mechanism, a mechanical arm 1 with 6 degrees of freedom is arranged beside the water tank 3, the ultrasonic detection component 2 is arranged at the tail end of the mechanical arm 1, the ultrasonic detection component 2 comprises a detection head 2-1, a protection frame 2-2 and a buffer spring 2-3, the detection head 2-1 is columnar and vertically arranged, the upper end of the detection head 2-1 is movably arranged at the tail end of the mechanical arm 1, the protection frame 2-2 is hollow and cover-shaped, the opening of the protection frame 2-2 is downward, the top end of the protection frame 2-2 is connected with the middle part of the detection head 2-1, the bottom end of the detection head 2-1 is positioned in the protection frame 2-2, the bottom end of the detection head 2-1 is higher than the bottom edge of the protection frame 2-2 by 0.3cm, during operation, the bottom edge of the protection frame 2-2 is abutted against a detection surface, the detection head 2-1 and the detection surface are ensured to keep consistent height, so as to improve the detection accuracy, the buffer spring 2-3 is sleeved on the upper part of the detection head 2-1, the top end surface of the buffer spring 2-3 is abutted against the mechanical arm 1, the bottom end surface of the ultrasonic detection assembly is abutted against the protection frame 2-2, and when the mechanical arm 1 descends, the buffer spring 2-3 can buffer the impact of the ultrasonic detection assembly 2 on the crankshaft 6, so that the effect of protecting the detection head 2-1 is achieved;

in the embodiment, two ends of the water tank 3 are respectively provided with a set of screw rod mechanisms, and two ends of the connecting plate are respectively connected with the sliding blocks of the screw rod mechanisms;

in the embodiment, the inner wall of the water tank 3 is provided with an upper limit block 3-1 and a lower limit block 3-1 for limiting the lifting stroke of the connecting plate, so that the crankshaft 6 is ensured to be lifted to an accurate position.

The automatic device for detecting the depth of the quenching layer of the crankshaft is arranged in the whole automatic production line of the crankshaft, and receives the previous working procedure, a conveying mechanical arm clamps the crankshaft 6 to be detected to be conveyed above a water tank 3 of a detection station, the crankshaft 6 to be detected is placed on a crankshaft bracket in the water tank 3, then the surface to be detected of the crankshaft 6 to be detected faces upwards, the conveying mechanical arm leaves the detection station, a supporting frame 5 is driven by a lifter 4 to descend until the surface to be detected of the crankshaft 6 to be detected is fully immersed below the liquid level of the couplant in the water tank 3 and is enough to ensure the immersion depth of a detection head 2-1, the detection mechanical arm 1 carries an ultrasonic detection assembly 2 to be moved above the crankshaft 6, after the detection mechanical arm 1 positions the surface to be detected of the crankshaft 6, the detection head 2-1 is ensured to descend after being aligned with the initial part of the surface to be detected, and after the bottom edge of a protection frame 2-2 abuts against the surface to be detected, at this time, the lower end of the detecting head 2-1 is immersed under the liquid level of the coupling agent, the bottom end of the detecting head 2-1 emits ultrasonic waves to start to detect, the journal is detected, then the left and right circular angles are detected, in the detection, under the action of the buffer spring 2-3, the ultrasonic detecting component 2 is always abutted against the detecting surface, the consistent distance between the detecting head 2-1 and the detecting surface is ensured, stable detecting quality is guaranteed, the detecting mechanical arm 1 drives the ultrasonic detecting component 2 to detect all parts to be detected of the crankshaft 6 through lifting, lowering and translation actions, the detecting mechanical arm 1 is lifted to the upper side of the water tank 3 and moves to one side of the water tank 3, the crankshaft bracket is lifted to lift the crankshaft 6 from the coupling agent, and the conveying mechanical arm 1 moves to the upper side of the water tank 3, clamps the detected crankshaft 6 and transfers the crankshaft to the next station. Thus, the depth detection process of the quenching layer of the crankshaft is completed.

The automatic device for detecting the depth of the quenching layer of the crankshaft is simple in structure, good in detection effect, capable of efficiently detecting the depth of the quenching layer of the crankshaft, and suitable for automatic production lines of crankshaft production.

Claims (5)

1. The utility model provides an automatic device is detected to bent axle hardening layer degree of depth, includes detection station, ultrasonic detection subassembly, characterized by, detection station is equipped with the basin that holds the couplant, installs the crank bracket of liftable in the basin, and the basin next door is equipped with multi freedom's arm, ultrasonic detection subassembly installs in the end of arm, and ultrasonic detection subassembly includes detection head, fender bracket and buffer spring, and detection head is column and vertical setting, and the upper end movable mounting of detection head is at the arm end, and the fender bracket is the cavity form, and the fender bracket opening is down, and the fender bracket top links to each other with the middle part of detection head, and the bottom of detection head is located inside the fender bracket, and the bottom end of detection head is higher than the bottom edge of fender bracket, buffer spring suit is in detection head upper portion, and the top face butt arm of buffer spring, its bottom face butt fender bracket.

2. The automatic depth detection device for the quenching layer of the crankshaft according to claim 1, wherein the crankshaft bracket comprises a lifter and a supporting frame, the lifter comprises a servo motor and a screw rod mechanism driven by the servo motor, the screw rod mechanism comprises a vertically arranged screw rod and a sliding block arranged on the screw rod, the supporting frame comprises a horizontally arranged connecting plate and two vertical plates arranged in the middle of the connecting plate at intervals, a groove for accommodating the neck of a main shaft of the crankshaft is formed in the top end of each vertical plate, and the connecting plate is connected with the sliding block on the screw rod mechanism.

3. The automatic device for detecting the depth of the quenching layer of the crankshaft according to claim 1, wherein a set of screw rod mechanisms are respectively arranged at two ends of the water tank, and two ends of the connecting plate are respectively connected with a sliding block of the screw rod mechanism.

4. The automatic device for detecting the depth of the quenching layer of the crankshaft according to claim 1, wherein an upper limit block and a lower limit block which limit the lifting stroke of the connecting plate are arranged on the inner wall of the water tank.

5. The automated crankshaft hardening layer depth inspection device of claim 1, wherein the bottom end of the inspection head is 0.2-0.5cm above the bottom edge of the fender bracket.

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