CN114543721B - Brake disc size detection device - Google Patents

Abstract

The invention provides a brake disc size detection device, and mainly relates to the field of size detection. The utility model provides a brake disc size detection device, includes conveying mechanism, manipulator, testing platform and well accuse machine, the conveying mechanism end sets up positioner, the manipulator sets up between conveying mechanism and testing platform, the testing platform top surface rotates and sets up electric chuck, it sets up detection ring to rotate on the testing platform in the electric chuck outside, detect ring and electric chuck disalignment, it sets up elevating system to detect the ring bottom, can dismantle on the detection ring and set up thickness detection head, plane degree detection head and circularity detection head. The invention has the beneficial effects that: the invention has stable installation, the detection device can not vibrate along with the rotation of the brake disc in the detection process, and the measured data is more accurate.

Description

A brake disc size detection device

technical field

The invention mainly relates to the field of size detection, in particular to a brake disc size detection device.

Background technique

The brake disc is an important component in the vehicle braking system. When braking, the brake caliper clamps the brake disc to generate braking force to slow down the vehicle. The thickness, flatness and roundness of the brake disc are its important indicators. During the production process, the size of the machined surface and other indicators should be tested. After the production is completed, the above dimensions of the brake disc should be fully tested to prevent residual Defective products flow into the market, causing immeasurable losses.

At present, the comprehensive inspection of brake discs mainly includes manual manual inspection and semi-automatic inspection platform. Manual inspection is time-consuming and labor-intensive, and the inspection efficiency is low. The precision of the inspection depends on the experience of the inspectors, and it is prone to problems such as false inspections and missed inspections. In the semi-automatic detection, the cantilever beam is generally used as the support of the detection head or the screw drive is used as the feed of the detection head. For example, the Chinese invention patent (CN114087947A) discloses a brake disc size detection equipment, that is, the cantilever support is adopted. The support structure of this kind of detection head will generate large vibration when the brake disc rotates or itself moves, and the structure fed by the screw drive will also cause vibration due to rotation, thus affecting the accuracy of the measurement data. For example, the Chinese invention patent (CN103837112B) discloses a brake disc size detection device, which discloses the detection of the roundness, flatness and thickness of the brake disc by using a cylinder-driven detection head to feed and contact the brake disc. After the cylinder rod of the cylinder is extended, it is also a cantilever support structure. When the brake disc is driven to rotate, the cylinder rod will also vibrate due to the cantilever structure, which will cause the detection heads at the end to vibrate and affect the measurement structure. At the same time, because it adopts a cylinder-driven telescopic method, the distance of the detection head is fixed, so it can only detect the flatness and thickness of the same diameter of the brake disc, and the detection data is not comprehensive.

To sum up, due to the limitations of the cantilever support structure, the detection head installed at the end of the cantilever structure will amplify the vibration of the cantilever when the testing equipment is testing. For equipment, the error is too huge to truly reflect the size information of the workpiece. At the same time, with the feeding of the detection head on the cantilever, the support length of the cantilever increases, so the vibration amplification of the detection head is also different, and the flatness and thickness detection errors of the brake disc are different, and the consistency of the dimensional detection cannot be maintained. Accurate information cannot be provided for production processing.

SUMMARY OF THE INVENTION

In order to solve the deficiencies of the prior art, the present invention provides a brake disc size detection device, which is installed stably, the detection device does not vibrate with the rotation of the brake disc during the detection process, and the measurement data is more accurate.

The present invention is achieved by the following technical solutions in order to achieve the above object:

A brake disc size detection device, comprising a conveying mechanism, a manipulator, a testing platform and a central control machine, the conveying mechanism is arranged on one side of the testing platform, the manipulator straddles the conveying mechanism and the testing platform, the central control machine It is arranged on the side of the manipulator; the end of the conveying mechanism is provided with a positioning device, the manipulator is arranged between the conveying mechanism and the detection platform, and an electric chuck is rotated on the top surface of the detection platform. A detection ring is set in rotation, and the bottom of the detection platform is provided with a chuck motor for driving the rotation of the electric chuck and a detection motor for driving the rotation of the detection ring. The detection ring is not coaxial with the electric chuck, and the bottom of the detection ring A lifting mechanism is provided, and a thickness detection head, a flatness detection head and a roundness detection head are detachably arranged on the detection ring.

The conveying mechanism is a belt conveyor, and the positioning device is an arc plate arranged at the end of the belt conveyor frame body, and the arc plate is adapted to the outer contour of the brake disc.

The manipulator includes a support frame, a synchronous belt transmission system, a lifting cylinder and a three-claw clamp. The synchronous belt transmission system is arranged on the top of the support frame, the lifting cylinder is arranged on the synchronous belt transmission system, and the three-claw clamp is arranged on the synchronous belt transmission system. Lift the bottom of the cylinder.

The detection motor is a servo motor signally connected to the central control computer, and the servo motor is connected to the detection ring in a driving manner.

The bottom of the thickness detection head, the flatness detection head and the roundness detection head are all provided with a magnetic suction seat, and a watch seat universal rod is arranged between the thickness detection head, the flatness detection head and the roundness detection head and the magnetic suction seat.

Several ring grooves are arranged on the top surface of the detection ring, and convex points matched with the ring grooves are arranged on the bottom surface of the magnetic attraction seat.

The detection ring is provided with a plurality of long grooves perpendicular to the ring groove, and the bottom surface of the magnetic attraction seat is provided with a "cross"-shaped positioning protrusion.

The lifting mechanism includes a lifting frame and a jacking mechanism, a sliding rail is vertically arranged on the inner wall of the detection platform, a sliding pair matched with the sliding rail is arranged on the lifting frame, and the lifting mechanism is arranged at the bottom of the lifting frame, so The detection motor is arranged inside the lift frame.

The electric chuck is an inner claw chuck.

Compared with the prior art, the present invention has at least the following beneficial effects:

The present invention is different from the conventional cantilever detection head structure and the detection head structure of the displacement driven by the lead screw on the market, and provides a new solution for the detection head displacement. In this solution, the detection head itself is installed stably, and the eccentric rotation method is used to make the detection head and the brake disc approach and feed. This structure makes the support arm of the detection head itself shorter, and the transmission and amplification effects of vibration are weaker. , to avoid the problem that the vibration of the cantilever structure is amplified at one end of the detection head, resulting in a large error in the measurement data of the detection head.

The invention adopts the eccentric rotation structure to realize the detection of the feed in the height direction and the diameter direction of the brake disc. The rotary feed mode replaces the traditional screw drive or cylinder drive form, and prevents the detection head from deepening with the feed. The extension of the support arm avoids the large error gap between the edge of the brake disc and the position near the axis during the brake disc flatness detection and thickness detection, and the inaccurate data measurement, which makes the detection head no matter at any diameter of the brake disc, At any height, it can ensure stability without jumping, and the measurement error remains consistent, so as to accurately measure the brake disc.

Description of drawings

Fig. 1 is the use state reference diagram of the present invention;

2 is a schematic structural diagram of a first three-dimensional viewing angle of the present invention;

3 is a schematic structural diagram of a second stereoscopic viewing angle of the present invention;

Fig. 4 is the structural schematic diagram of the three-dimensional viewing angle of the detection platform of the present invention;

Fig. 5 is the partial cross-sectional structural schematic diagram of the main viewing angle of the detection platform of the present invention;

Fig. 6 is the partial enlarged structural schematic diagram of A part of the present invention;

FIG. 7 is a schematic diagram of a partial structure of the present invention from a front view angle.

Symbols shown in the drawings: 1, detection platform; 2, conveying mechanism; 3, manipulator; 4, central control machine; 5, lifting mechanism; 11, electric chuck; 12, detection ring; 13, chuck motor; 14 , detection motor; 15, thickness detection head; 16, flatness detection head; 17, roundness detection head; 18, magnetic suction seat; 19, watch seat universal rod; 21, positioning device; 31, support frame; 32, Timing belt transmission system; 33, lift cylinder; 34, three-jaw clamp; 51, lift frame; 52, jacking mechanism; 53, slide rail; 54, sliding pair; 121, ring groove; 122, long groove.

Detailed ways

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

As shown in FIGS. 1-7 , a brake disc size detection device according to the present invention includes a conveying mechanism 2 , a manipulator 3 , a detection platform 1 and a central control machine 4 . The conveying mechanism 2 is arranged on one side of the inspection platform 1 , and the end of the conveying mechanism 2 is located at one side of the inspection platform 1 , so that the workpieces on the conveying mechanism 2 can be transferred to the inspection platform 1 . The manipulator 3 straddles above the conveying mechanism 2 and the detection platform 1 , and the manipulator 3 is an action part for transferring the workpiece. The central control machine 4 is arranged on the side of the manipulator 3, and the central control machine 4 is a control part of the equipment. The conveying mechanism 2 is a unit for conveying the brake disc. A positioning device 21 is provided at the end of the conveying mechanism 2. The brake disc is transported to the positioning device 21 through the conveying mechanism 2 for positioning, and the manipulator 3 can be used to locate the brake disc here. Grab it and transfer it to the inspection platform 1 for inspection. Specifically, the conveying mechanism 2 is a belt conveyor, and the positioning device 21 is an arc plate bolted on the end of the belt conveyor frame. The arc plate corresponds to the outer contour of the brake disc. When conveyed to the positioning device 21 , the contour of the outer wall of the brake disc fits with the arc surface of the arc plate, so as to complete the positioning of the brake disc and facilitate the grasping of the manipulator 3 . Since the detection device needs to detect brake discs of different specifications, the arc plate used as the positioning device 21 can be replaced. For each type of brake disc, an arc plate of different specifications is made as the positioning plate, and it is replaced when it is used. That's it.

The manipulator 3 is arranged between the conveying mechanism 2 and the detection platform 1, and the manipulator 3 is used to transfer the brake disc from the conveying mechanism 2 to the inspection platform 1 for detection, and transfer the detected brake disc to the storage rack or finished product transportation. A device on the mechanism, which can adopt a cantilever structure or a gantry structure. In this embodiment, the manipulator 3 includes a gantry-type support frame 31 , a synchronous belt transmission system 32 , a lifting cylinder 33 and a three-jaw clamp 34 , and the gantry-type support frame 31 spans between the conveying mechanism 2 and the detection platform 1 . . The synchronous belt transmission system 32 is installed on the top of the support frame 31 , and the lifting cylinder 33 is arranged on the synchronous belt transmission system 32 . Displacement to complete the transfer of the brake disc. The lift cylinder 33 adopts a slide cylinder, so as to cope with the handling of heavy objects of the brake disc. The three-jaw clamp 34 is installed on the bottom of the cylinder rod of the lift cylinder 33 . The three-jaw clamp 34 uses an air cylinder or an electric push rod as a driving force, and the three-jaw clamp 34 clamps the outer circle of the top surface of the brake disc and places it on the detection platform 1 . Specifically, the claws of the three-jaw clamp 34 may be clamping claws or support claws for tensioning the inner hole.

An electric chuck 11 is rotatably installed on the top surface of the detection platform 1, and a detection ring 12 is rotatably installed on the detection platform 1 outside the electric chuck 11. In the normal state of not being lifted, the detection ring 12 is connected to the detection platform. 1 Top surfaces are coplanar. The detection ring 12 nests the electric chuck 11 . The claws adopted by the electric chuck 11 are inner support claws, so that the inner hole of the brake disc can be tightly supported and fixed, so as to avoid interference between the claws and the detection head. A chuck motor 13 for driving the electric chuck 11 to rotate and a detection motor 14 for driving the detection ring 12 to rotate are installed on the bottom of the detection platform 1 . The detection ring 12 is not coaxial with the electric chuck 11 , and a lifting mechanism 5 is installed at the bottom of the detection ring 12 , and the lifting mechanism 5 is used to drive the detection ring 12 to lift and lower.

Specifically, the lifting mechanism 5 includes a lifting frame 51 and a jacking mechanism 52 , and the detection ring 12 and the lifting frame 51 are connected by a plane bearing. The sliding rail 53 is vertically installed on the inner wall of the detection platform 1, and the sliding pair 54 matched with the sliding rail 53 is bolted on the lifting frame 51. Through the cooperation of the sliding rail 53 and the sliding pair 54, the lifting frame 51 can be vertically mounted. Movement in a straight direction. The lifting mechanism 52 is installed at the bottom of the lifting frame 51 , and the lifting frame 51 can be lifted up by the jacking mechanism 52 , so that the detection ring 12 exceeds the height of the detection platform 1 . Specifically, in order to ensure that the detection ring 12 can be stopped at any height during the jacking process, the jacking mechanism 52 adopts a jacking structure driven by a servo motor and driven by a lead screw. Specifically, the servo motor is fixed on the bottom surface of the detection platform 1 by bolts, the driving screw is installed vertically inside the detection platform 1, the servo motor drives the driving screw to rotate through the gear reducer, and the bolts on the lifting frame 51 are fixed to the driving screw. Matching silk mother.

The detection motor 14 is disposed inside the lift frame 51 . Meanwhile, in order to ensure that the detection ring 12 can rotate at a certain angle accurately, the detection motor 14 adopts a servo motor, and the servo motor and the detection ring 12 are driven by gear transmission, chain transmission or synchronous belt transmission. Specifically, in this embodiment, the outer wall of the detection ring 12 is provided with pin teeth, and the motor shaft of the servo motor is keyed to the driving gear that meshes with the pin teeth.

Since the lift frame 51 covers the chuck motor 13, the chuck motor 13 should be fixed on the bottom surface of the inspection platform 1 by bolts, and the chuck motor 13 drives the rotation of the electric chuck 11 through a chain drive or a belt drive. There is a certain gap between the electric chuck 11 and the detection ring 12 , the gap is filled with a plane ring as a support, and the bottom of the plane ring is fixed on the bottom surface of the detection platform 1 through a mounting frame. The top surface of the lifting frame 51 is provided with an opening allowing the installation frame to pass through, so that the vertical displacement of the lifting frame 51 is not interfered by the installation frame.

A thickness detection head 15, a flatness detection head 16 and a roundness detection head 17 can be detachably installed on the detection ring 12. The thickness detection head 15 is two laser measurement heads that are symmetrical up and down. By detecting the two laser measurement heads respectively The thickness of the brake disc is determined by the distance from the upper and lower surfaces of the brake disc. The flatness detection head 16 and the roundness detection head 17 are both contact detection heads, the flatness detection head 16 has two oppositely arranged detection heads, and the two detection heads are respectively in contact with the upper and lower bottom surfaces of the brake disc. , to measure the flatness of the upper and lower bottom surfaces of the brake disc. The thickness detection head 15 , the flatness detection head 16 and the roundness detection head 17 are all electrically connected to the central control computer 4 . The central control machine 4 records the detection data of the thickness detection head 15, the flatness detection head 16 and the roundness detection head 17, and compares them with the qualified size, thereby judging whether the size of the brake disc is qualified. One end of the inspection platform 1 away from the conveying mechanism 2 can accommodate a qualified product conveying device and a non-conforming product conveying device, both of which are located within the stroke of the manipulator 3 .

Specifically, the bottom of the thickness detection head 15 , the flatness detection head 16 and the roundness detection head 17 are all provided with a magnetic suction seat 18 , and the detection head can be adsorbed on the detection ring 12 through the magnetic suction seat 18 . The switch can control the occurrence of magnetic force, so as to ensure that the detection head can be placed at any position on the detection ring 12. A watch seat universal rod 19 is installed between the thickness detection head 15 , the flatness detection head 16 , the roundness detection head 17 and the magnetic base 18 , and the position of the flatness detection head 16 can be checked through the watch seat universal rod 19 . Adjust it to fit different mounting positions and different sizes of discs.

Specifically, a plurality of ring grooves 121 are formed on the top surface of the detection ring 12 , and convex points matched with the ring grooves 121 are provided on the bottom surface of the magnetic attraction seat 18 . The convex point can be snapped into the ring groove 121 , so as to limit the position of the magnetic suction seat 18 , so that the magnetic suction seat 18 can be stably installed on the detection ring 12 . More specifically, a number of long grooves 122 perpendicular to the ring groove 121 can also be opened on the common installation positions on the detection ring 12, and the bottom surface of the magnetic suction seat 18 is provided with a "cross"-shaped positioning protrusion, so that the magnetic suction seat 18 is positioned more accurately to ensure the stable installation of the magnetic suction base 18 on the detection ring 12 .

The position of the detection ring 12 closest to the electric chuck 11 is defined as the proximal end, and the position of the detection ring 12 farthest from the electric chuck 11 is defined as the distal end. Place the flatness detection head 16 and the roundness detection head 17 on both sides of the far end of the detection ring 12 respectively, and place the thickness detection head 15 between the flatness detection head 16 and the roundness detection head 17 and close to the flatness detection head 16 side. When the detection ring 12 is not lifted up, adjust the flatness detection head 16 and the roundness detection head 17 so that the upper and lower measurement heads of the flatness detection head 16 are respectively at the level of the upper and lower bottom surfaces of the brake disc, but Do not contact the upper and lower surfaces of the brake disc, so that the roundness detection head 17 is slightly lower than the bottom edge of the side of the brake disc and does not reach the position where the arc surface of the side of the brake disc is connected. Adjust the thickness detection head 15 so that it is lower than the height of the brake disc.

When in use, the brake disc is transferred to the detection platform 1 by the manipulator 3, and is clamped and fixed by the electric chuck 11. Then the central control computer 4 controls the chuck motor 13 to rotate, and at the same time controls the detection motor 14 to drive the detection ring 12 to rotate a certain angle in the direction of the flatness detection head 16, so that the two relative detection heads of the flatness detection head 16 are gradually connected to the upper and lower sides of the brake disc. The bottom surface contacts, so as to detect the flatness of the upper and lower bottom surfaces of the brake disc at this diameter position (the flatness detection head 16 stays at this position for at least one rotation of the brake disc). Then the central control computer 4 controls the detection ring 12 to rotate several times in the direction of the flatness detection head 16. After each rotation stops, the flatness detection head 16 feeds a certain distance to the center of the brake disc. Check the upper and lower surfaces of the brake disc. Finally, the central control computer 4 integrates the detection data to complete the detection of the flatness of the brake disc. After the detection is completed, the central control computer 4 firstly controls the detection motor 14 to reverse rotation to make the flatness detection head 16 separate from the brake disc, and controls the jacking mechanism 52 to drive the lift frame 51 to rise until the roundness detection head 17 reaches the height of the bottom edge of the brake disc. The detection ring 12 is controlled to rotate toward the roundness detection head 17 until the roundness detection head 17 collides with the bottom edge of the side surface of the brake disc, and the roundness detection is performed with the rotation of the brake disc. Subsequently, the jacking mechanism 52 continues to drive the lifting frame 51 to rise, so that the roundness detection head 17 moves up several times on the side of the brake disc. , so as to integrate the detection data and complete the detection of the roundness of the side of the brake disc. After the detection is completed, the central control computer 4 controls the jacking mechanism 52 to drive the lifting frame 51 to continue to rise until the two thickness detection heads 15 are located on both sides of the upper and lower bottom surfaces of the brake disc. At this time, the roundness detection head 17 has left the height range of the brake disc. Then the central control computer 4 controls the detection ring 12 to continue to rotate in the direction of the roundness detection head 17, so that the thickness detection head 15 is in the range of the brake disc, and then the central control computer 4 controls the detection ring 12 to rotate several times, so that the thickness detection head 15 Feeding toward the axis of the brake disc, the thickness of the brake disc at multiple diameter positions is detected by the thickness detection head 15, and finally the detection data is integrated to complete the detection of the thickness of the brake disc. After the detection is completed, the central control computer 4 controls the detection ring 12 to reset, and the central control computer 4 compares the data. When any of the detection data fails to meet the standard, the brake disc is a non-conforming product. If all data are within the limited range, it is a qualified product. Finally, the central control machine 4 controls the action of the manipulator 3, and places the qualified products and the unqualified products respectively in the qualified area and the unqualified area to distinguish.

Before the device is used, it is necessary to debug the positions of the thickness detection head 15 , the flatness detection head 16 and the roundness detection head 17 according to the brake disc specifications, and manually locate the rotation angle and elevation of the detection ring 12 , while manually entering the incremental angle for each turn and the incremental height for the rise.

Claims (9)

1. The utility model provides a brake disc size detection device, includes conveying mechanism (2), manipulator (3), detection platform (1) and well control machine (4), its characterized in that: the conveying mechanism (2) is arranged on one side of the detection platform (1), the manipulator (3) stretches across the conveying mechanism (2) and the detection platform (1), and the central control machine (4) is arranged on one side of the manipulator (3); the tail end of the conveying mechanism (2) is provided with a positioning device (21), the manipulator (3) is arranged between the conveying mechanism (2) and the detection platform (1), the top surface of the detection platform (1) is rotationally provided with an electric chuck (11), a detection ring (12) is rotationally arranged on the detection platform (1) at the outer side of the electric chuck (11), a chuck motor (13) for driving the electric chuck (11) to rotate and a detection motor (14) for driving the detection ring (12) to rotate are arranged at the bottom of the detection platform (1), the detection ring (12) is not coaxial with the electric chuck (11), the bottom of the detection ring (12) is provided with a lifting mechanism (5), the detection ring (12) is detachably provided with a thickness detection head (15), a flatness detection head (16) and a roundness detection head (17), the thickness detection head (15), the flatness detection head (16) and the roundness detection head (17) are in signal connection with the central control machine (4).

2. The brake disc size detection device of claim 1, wherein: the conveying mechanism (2) is a belt conveyor, the positioning device (21) is an arc plate arranged at the tail end of a frame body of the belt conveyor, and the arc plate is matched with the outer contour of the brake disc.

3. The brake disc size detection device of claim 1, wherein: manipulator (3) are including support frame (31), synchronous belt drive system (32), lift cylinder (33) and three-jaw anchor clamps (34), synchronous belt drive system (32) set up at support frame (31) top, lift cylinder (33) set up on synchronous belt drive system (32), three-jaw anchor clamps (34) set up in lift cylinder (33) bottom.

4. The brake disc size detection device of claim 1, wherein: the detection motor (14) is a servo motor in signal connection with the central control machine (4), and the servo motor is in transmission connection with the detection ring (12).

5. A brake disc size detecting device according to claim 1, wherein: the thickness detection head (15), the flatness detection head (16) and the roundness detection head (17) are all provided with magnetic suction seats (18) at the bottoms, and gauge stand universal rods (19) are arranged between the thickness detection head (15), the flatness detection head (16) and the roundness detection head (17) and the magnetic suction seats (18).

6. The brake disc size detecting device according to claim 5, wherein: the top surface of the detection ring (12) is provided with a plurality of ring grooves (121), and the bottom surface of the magnetic suction seat (18) is provided with salient points matched with the ring grooves (121).

7. The brake disc size detection device of claim 6, wherein: the detection ring (12) is provided with a plurality of long grooves (122) vertical to the ring groove (121), and the bottom surface of the magnetic suction seat (18) is provided with a cross-shaped positioning bulge.

8. The brake disc size detection device of claim 1, wherein: elevating system (5) include crane (51) and climbing mechanism (52), set up slide rail (53) perpendicularly on detecting platform (1) inner wall, set up on crane (51) and slide rail (53) matched with slide pair (54), climbing mechanism (52) set up in crane (51) bottom, it is inboard at crane (51) to detect motor (14) setting promptly.

9. The brake disc size detection device of claim 1, wherein: the electric chuck (11) is an inner supporting jaw chuck.

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