CN112697567A

CN112697567A - Device and method for detecting surface defects of automobile parts

Info

Publication number: CN112697567A
Application number: CN202011469418.9A
Authority: CN
Inventors: 丁威
Original assignee: Individual
Current assignee: Shenzhen Huameihe Control System Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-04-23
Anticipated expiration: 2040-12-15
Also published as: CN112697567B

Abstract

The invention provides a device and a method for detecting surface defects of automobile parts, which relate to the technical field of new energy automobile production and comprise a horizontally placed base, wherein the base is horizontally fixed on the ground, supporting frames which are upright on the top end of the base are symmetrically arranged on the left side and the right side of the top end of the base, the top ends of the supporting frames on the left side and the right side of the top end of the base are rotatably connected with a gear shaft through bearings, the outer wall of the gear shaft is connected with a toothed belt through gear teeth in a meshed manner, the middle part of the inner ring of the toothed belt is connected with a driving gear shaft in a meshed manner, and the outer wall of; according to the invention, the lateral air blowing of the air blowing device is matched with the chain to push the part to be detected to rotate, so that the air blowing device can clean the surface of the part to be detected comprehensively, and the cleanness and the cleaning efficiency of the surface of the part to be detected are improved.

Description

Device and method for detecting surface defects of automobile parts

Technical Field

The invention relates to the technical field of new energy automobile production, in particular to an automobile part surface defect detection device and a detection method.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure.

When a new energy automobile is produced, a plurality of parts are required to be assembled and spliced to form the new energy automobile, at present, disc-shaped parts are mostly formed by casting in production, and in the large-batch casting production process, because the surfaces of a die and particles generated in the casting process are attached to the surfaces of the parts, the surfaces of the formed parts can generate a plurality of bulges, and the bulges on the surfaces of the parts can generate unexpected consequences in the installation and use processes, so that the surfaces of the parts need to be detected after the parts are cast and produced into open shapes.

At present, patent number CN202010278592.9 discloses a snatch formula part surface detection device, including detection machine case platform, detection mechanism, snatch feed mechanism and snatch unloading mechanism, detection mechanism includes glass carousel and a plurality of optical detection station that sets up at glass carousel avris, it snatchs the subassembly of transporting to the material loading on the glass carousel including the last charging tray that is used for placing to wait to detect the part and being used for transporting the part on the last charging tray to snatch, snatch unloading mechanism including placing the lower charging tray that detects the back part, defective products collection box, be used for snatching the part on the glass carousel and transport the subassembly to the unloading of transporting in the lower charging tray or defective products collection box snatch. The invention can realize the adjustment of the detection speed of the part by controlling the movement speeds of the feeding clamping jaw, the glass turntable and the discharging turntable, can greatly improve the detection efficiency according to the actual requirement, has simple structure and low price, and can effectively reduce the detection cost of the surface damage of the part.

The part surface detection device disclosed in the patent still has some defects in practical use, and the specific defects are as follows:

one, current, in the in-process that detects the part in batches, snatch the part through the list and carry out neatly putting, can make detection efficiency low, detection quality is not high.

Second, existing, when mass production is carried out, if single detection is carried out through single part grabbing, the problem of detection leakage exists in the large-batch parts easily, and the quality of the whole batch of products can be affected.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a device and a method for detecting surface defects of automobile parts, which solve the problems that in the process of detecting parts in large batch, the detection efficiency is low and the detection quality is not high due to the fact that parts are placed orderly by single grabbing. And when mass production, if single detection is carried out through a single grabbing part, the problem of missed detection exists in the mass parts easily, and the technical problem of influencing the quality of the whole batch of products is solved.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: a surface defect detection device for automobile parts comprises a horizontally placed base, wherein the base is horizontally fixed on the ground, supporting frames standing upright at the top end of the base are symmetrically arranged on the left side and the right side of the top end of the base, the top ends of the supporting frames positioned on the left side and the right side of the top end of the base are rotatably connected with a gear shaft through bearings, the outer wall of the gear shaft is connected with a toothed belt through gear tooth meshing, the middle part of the inner ring of the toothed belt is meshed with a driving gear shaft, and the outer wall of the toothed belt is provided with raised part bosses at equal intervals;

a shifting wheel frame is fixedly arranged at the top end of the base and positioned on the front side of the toothed belt, a shifting wheel is arranged at the top end of the shifting wheel frame, a convex shifting rod is arranged on the outer circular surface of the shifting wheel, a grooved wheel is fixedly arranged at the front end of the outer circular surface of the driving gear shaft, a plurality of meshing grooves are formed in the outer circular surface of the grooved wheel at equal intervals, and the shifting rod is sequentially embedded into each meshing groove to enable the grooved wheel to rotate intermittently in the rotating process of the shifting wheel;

a first belt wheel is fixedly installed at the front end of the shifting wheel, a motor is fixedly installed at the top end of the base, an output shaft extends forwards from the motor, a second belt wheel is fixedly installed at the top end of the output shaft of the motor, and a transmission belt is connected between the second belt wheel and the first belt wheel;

a side supporting plate is fixedly arranged at the top end of the base and positioned at the rear side of the toothed belt, the side supporting plate is vertically fixed at the top end of the base, a part storage barrel is fixedly arranged at the front side of the side supporting plate, a downward through round hole is formed in the middle of the top end of the part storage barrel, the part storage barrel is arranged right above the toothed belt at the front end of the side supporting plate, a plurality of parts are regularly discharged into the round hole, first motors are symmetrically arranged at the bottom end of the outer wall of the part storage barrel, the first motors are symmetrically arranged close to the bottom end of the outer wall of the part storage barrel, a motor output shaft downwardly extends out of the first motors, and a first stirring plate and a second stirring plate are fixedly arranged at the bottom end of the motor;

the first material shifting plate is arranged above the second material shifting plate, the height between the first material shifting plate and the second material shifting plate is the thickness of one part, the first material shifting plate and the second material shifting plate are both fan-shaped thin plates, the first material shifting plate and the second material shifting plate are arranged in a staggered mode to be disc-shaped, the diameters of the first material shifting plate and the second material shifting plate are the same, the perimeter of the outer circular surface of the second material shifting plate is larger than that of the outer circular surface of the first material shifting plate, and the second material shifting plate gradually withdraws from the bottom end of the part at the bottom layer after the first material shifting plate is gradually cut into a gap between two adjacent parts at the bottom layer in the circular hole;

the front end of the side supporting plate is sequentially provided with an air blowing device, a cleaning device and a testing device from right to left, the air blowing device is as high as the top surface of the toothed belt, the cleaning device is arranged above the toothed belt, and the testing device is arranged on the top surface of the toothed belt;

a chain parallel to the toothed belt is arranged on the front side of the top end of the toothed belt, the chain rotates at a constant speed on the front side of the top end of the toothed belt, chain wheels are meshed and connected to two ends of an inner ring of the chain, the middle part of the inner ring of each chain wheel is rotatably connected to a shaft rod through a bearing, and the shaft rod of each chain wheel is fixedly mounted at the top end of the base;

the left side fixed mounting of profile of tooth area has the second storage cylinder, the second storage cylinder is vertically fixed in the left ground of base, the part groove of round hole form is seted up on second storage cylinder top, the part tank bottom middle part on second storage cylinder top is provided with the support post, the support post sets up to the cylinder rod structure, the circular conical surface has been seted up on the top of support post, the circular cone on support post top face approach in the top of second storage cylinder, the top of second storage cylinder has set firmly the striker plate, the striker plate top is crooked arcwall face, the striker plate right-hand member take approach in on the outer wall on profile of tooth area right side, the striker plate right-hand member is seted up and is supplied the groove of stepping down that the part boss flows.

As a preferred technical scheme of the invention, the part boss comprises a conical surface and a rotating ring, the part boss is of a round rod structure, the top end of the part boss is provided with the conical surface, the height of the conical surface at the top end of the part boss is lower than the thickness of the part, the outer circular surface of the part boss is rotatably connected with the rotating ring, the diameter of the outer circular surface of the rotating ring is smaller than the diameter of an inner hole of the part, the top end of the rotating ring is provided with an inclined surface connected with the bottom end of the conical surface, and the bottom end of the rotating ring is provided with an annular boss.

As a preferred technical scheme of the present invention, the top end of the first material shifting plate and the top end of the second material shifting plate are provided with arc-shaped transmission grooves, an arc-shaped bent conveying belt is installed in the transmission grooves, rotating rollers are arranged at two ends of an inner ring of the conveying belt, the rotating rollers at two ends of the inner ring of the conveying belt are rotatably connected to two ends of the transmission grooves, a supporting table is arranged in the middle of the inner ring of the conveying belt, and the top surface of the supporting table is slightly lower than the top surface of the corresponding first material shifting plate or the top surface of the corresponding second material shifting plate.

As a preferred technical solution of the present invention, the outer wall of the first material shifting plate and the outer wall of the second material shifting plate are both provided with a V-shaped inclined surface.

As a preferred technical scheme of the invention, the blowing device comprises an air inlet interface and a plurality of air nozzles, wherein the plurality of air nozzles are arranged on the front end surface of the blowing device at equal intervals along the top surface of the toothed belt, each air nozzle is communicated with the air inlet interface in the blowing device, and the air inlet interface is arranged at the rear side of the blowing device;

and the plurality of air nozzles on the front side of the air blowing device are at least provided with a distance of two part bosses to the left along the top surface of the toothed belt on the rear side of the toothed belt.

As a preferable technical scheme of the invention, the cleaning device comprises a second motor, an oil baffle plate, an oil discharge hole, a cleaning disc and cleaning bristles, wherein the second motor is fixedly arranged on the front side of a side supporting plate, an output shaft extends downwards from the bottom end of the second motor, the cleaning disc is fixedly arranged at the bottom end of the output shaft of the second motor, and a plurality of cleaning bristles extending downwards are arranged at equal intervals at the bottom end of the cleaning disc.

As a preferred technical scheme of the invention, the top end of the brushing disc is provided with a circular oil baffle plate along the outer circular surface of the brushing disc, the oil baffle plate is upright at the top end of the brushing disc, the top end of the oil baffle plate is provided with a baffle plate which is bent towards the middle and is horizontally fixed, the middle of the top end of the brushing disc and the top end of the brushing disc close to the inner wall of the oil baffle plate are provided with a plurality of oil discharge holes at equal intervals, and the top end of the brushing disc close to the inner wall of the oil baffle plate is arranged on the brushing disc at equal intervals according to the circumference.

As a preferred technical scheme of the invention, the testing device comprises a lifting hole formed in the side supporting plate and a testing device box slidably mounted in the lifting hole, the lifting hole is upright on the top surface of the toothed belt, a threaded rod is arranged on the rear side of the testing device box, the threaded rod on the rear side of the testing device box penetrates through the lifting hole to extend out to the rear side of the side supporting plate, and a locking nut is mounted on the outer circular surface of the threaded rod extending out of the rear side of the side supporting plate;

the testing device box comprises a light-emitting bulb, an adjusting bolt, a lifting hole, a sliding chute, a sliding block testing rod, a conductive connecting rod, a testing device box, a swinging rod, a pressure spring, a hinge supporting rod, a limiting rod and a walking roller, wherein the left side of the testing device box is provided with the sliding chute standing upright at the top end of the toothed belt, the sliding chute is internally provided with the sliding block in a sliding fit mode, the left side of the sliding block is provided with the testing rod which is horizontally arranged, the middle part of the testing rod is provided with a sliding hole, and the sliding hole in the middle part of the testing;

the bottom end of the left side of the testing device box is fixedly provided with a hinged support rod, the middle part of the swing rod is hinged to the top end of the hinged support rod, the bottom end of the swing rod is provided with a walking roller which is horizontally arranged, the left side of the hinged support rod is provided with a limiting rod, the top end of the limiting rod abuts against the bottom end of the swing rod on the left side of the hinged support rod, and the bottom end of the swing rod on the right side of the hinged;

the testing device comprises a testing device box and is characterized in that a light-emitting bulb is fixedly mounted at the top end of the testing device box, a threaded hole is formed in the top end of the testing device box, an adjusting bolt is spirally connected in the threaded hole in the top end of the testing device box, the bottom end of the adjusting bolt penetrates through the testing device box and extends downwards, the bottom end of the adjusting bolt extends downwards and is rotatably connected with a conductive connecting rod, a metal contact end in sliding contact with the conductive connecting rod is arranged in the middle of the testing rod, and positive and negative electrodes of the light-emitting bulb are respectively connected to the metal contact.

As a preferred technical scheme of the invention, a second pressure spring is fixedly mounted at the bottom end of the testing device, a magnetic column shaft frame is fixedly mounted at the bottom end of the second pressure spring, a magnetic column of a roller structure is rotatably connected to the bottom end of the magnetic column shaft frame, the axial direction of the magnetic column is parallel to the top end face of the part, a second scrap storage box is fixedly mounted on the right side face of the magnetic column, the second scrap storage box is arranged on the left side of the magnetic column shaft frame, a scrap storage groove is formed in the middle of the second scrap storage box, a second scrap shoveling knife is arranged on the right side of the second scrap storage box, and the top end of the second scrap shoveling knife is attached to the surface of the magnetic column.

A method for detecting surface defects of automobile parts specifically comprises the following steps:

s1, placing parts: placing a plurality of parts to be detected in a round hole of a part storage barrel in order;

s2, placing parts: the parts to be detected which are neatly stacked in the part storage barrel in the step S1 are placed at the top end of the toothed belt at equal intervals according to a certain rule, the parts to be detected which are stacked in the part storage barrel are placed on each part boss at the top end of the toothed belt by the rotation of the first motor and the staggered arrangement of the first material shifting plate and the second material shifting plate in cooperation with the intermittent rotation of the toothed belt, and the positions of the parts to be detected are fixed through the part bosses;

s3, moving parts: intermittently moving the part to be detected of the part boss arranged at the top end of the toothed belt in the step S2 through the toothed belt to enable the part boss to orderly move at the top end of the toothed belt;

s4, non-contact cleaning: performing non-contact air blowing cleaning on each part to be detected which orderly moves at the top end of the toothed belt in the step S3, removing the scrap and dust on the surface of the part to be detected, and improving the cleaning efficiency;

s5, surface cleaning: cleaning the surface of each part to be detected after the non-contact cleaning in the step S4, cleaning the particle stains which are not cleaned on the detection surface of the part to be detected during the non-contact cleaning through a cleaning device, and improving the detection accuracy of the detection surface of the part to be detected;

s6, mixed brushing: in the surface cleaning process in the step S5, the end face of the part to be detected is cleaned by blowing air through the blowing device, and the detection surface of the part to be detected is cleaned by matching with the cleaning device, so that the cleaning efficiency is improved, and the cleanliness of the detection surface of the part to be detected is improved;

s7, rotating parts: in the step S4-step S6, the part intermittently stops when moving to the position of the blowing device or the cleaning device through the rotation of the chain in the intermittent moving process, and the part still keeps rotating in the stopping process;

s8 surface test: and (4) performing surface detection on the part to be detected after cleaning in the step (S6), rolling the surface of the part to be detected through a walking roller when the part moves to a position below the testing device at the top end of the toothed belt and stays, rotating the part below the walking roller by matching with the rotation of a chain, rolling the walking roller at the top end of the part, detecting whether the surface of the part has a convex structure, and pushing a metal contact end to slide on the surface of a conductive connecting rod when the convex structure appears on the surface of the part to be detected so as to connect the positive electrode and the negative electrode of the light-emitting bulb, so that the light-emitting bulb is lightened, and the detected surface of the part.

Compared with the prior art, the invention has the beneficial effects that:

firstly, a plurality of parts to be detected are orderly stacked in a round hole of a part storage barrel; the parts to be detected which are stacked in the part storage barrel are placed on each part boss at the top end of the toothed belt by the rotation of the first motor and the staggered arrangement of the first material shifting plate and the second material shifting plate in cooperation with the intermittent rotation of the toothed belt, so that the complex operation of manually placing the parts is avoided, the labor intensity of workers is reduced, each part to be detected is placed on the part boss, and the part to be detected arranged in the part boss can rotate freely through the rotatable rotating ring arranged on each part boss, further, the part to be detected can rotate in the process of moving the part in a simple manner, the rotation of the part to be detected is facilitated, the speed of cleaning the surface of the part to be detected is increased, through waiting to detect the rotation of part, improve testing arrangement and treat the comprehensive detection efficiency of detecting the part top face, improve and detect the precision.

The part boss moves orderly at the top end of the toothed belt through intermittent movement of the toothed belt; blow to each of the orderly removal of toothed belt top from the side through gas blowing device and wait to detect the part surface, blow to each pivoted part and clean in contactless, clear away and wait the piece dust on detection part surface, blow through gas blowing device's side direction, the rotation of waiting to detect the part is promoted to the cooperation chain, is favorable to making gas blowing device can clean the surface of waiting to detect the part comprehensively, improves and treats cleaning neatness and the efficiency of cleaning on detection part surface.

Third, the cleaning device cleans particle stains which are not cleaned completely on the detection surface of the part to be detected during non-contact cleaning, the cleaning disc is driven to rotate by the second motor, the cleaning bristles at the bottom of the cleaning disc rotationally clean the top end surface of each part to be detected which flows below the cleaning bristles, debris lifted by the cleaning bristles is blown away from the surface of the part by air flow in cooperation with the blowing of the blowing device, the cleaning thoroughness of the cleaning bristles is further improved, the part to be detected is driven by the full chain to rotate in the cleaning process, the cleaning bristles can clean the whole top end surface of the part to be detected, and the cleaning thoroughness of the whole part to be detected is further improved.

The invention circularly conveys the parts to be detected to the lower part of the testing device for surface detection through the intermittent rotation of the toothed belt, thereby effectively improving the detection efficiency when a plurality of parts are detected, the intermittent rotation of the toothed belt, when the parts move to the lower part of the testing device at the top end of the toothed belt and stay, the parts roll on the surface of the parts to be detected through the walking roller, the parts rotate below the walking roller by matching with the rotation of the chain, the walking roller rolls at the top end of the parts, whether the surface of the parts has a convex structure or not is detected, when the surface of the detected parts has the convex structure, the metal contact end is pushed to slide on the surface of the conductive connecting rod, the positive electrode and the negative electrode of the light-emitting bulb are connected, the light-emitting bulb is lightened, the detected defects exist on the surface of the parts, the detection efficiency is improved, and the parts to be detected move to the lower, the walking roller rolls on the top end face of the part to be detected, the whole top end face of the part to be detected is effectively detected, when a protrusion appears on the surface of the top end of the part and moves to the protrusion, the light-emitting bulb is lightened by pushing the push rod, so that the defect on the surface of the part to be detected can be quickly identified, manual timely screening is facilitated, the detection efficiency is improved, the light-emitting bulb is lightened, manual work is facilitated, and the effectiveness of manual detection is improved.

And fifthly, the rotatable magnetic column is arranged in front of the walking roller, and the magnetic column adsorbs the debris in the small hole at the top end of the part to be detected, so that the phenomenon that the detection accuracy of the walking roller is influenced due to the fact that the debris in the small hole is too much and is tilted is avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic front view of the apparatus for detecting surface defects of automotive parts according to the present invention;

FIG. 2 is a schematic top view of the surface defect inspection apparatus for automobile parts according to the present invention

FIG. 3 is an enlarged view of a portion of FIG. 1 in accordance with the teachings of the present invention;

FIG. 4 is a schematic structural view of the conveyor belt of the present invention at the top ends of the first and second material-stirring plates;

FIG. 5 is a schematic front view of the first material shifting plate and the second material shifting plate alternately disposed at the bottom end of the output shaft of the motor according to the present invention;

FIG. 6 is a schematic view of the structure of the belt of the present invention driving in the driving groove;

FIG. 7 is a schematic structural diagram of a testing apparatus according to the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 taken at B in accordance with the teachings of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 1 at C in accordance with the teachings of the present invention;

FIG. 10 is a schematic view of the top end of the cleaning disc of the present invention;

FIG. 11 is a schematic structural view of the testing device of the present invention with a rear bolt installed in a lifting hole and locked by a locking nut;

FIG. 12 is a schematic view of the structure of the present invention in which the positive and negative electrodes of the light-emitting bulb are electrically connected to the conductive connecting rod respectively;

FIG. 13 is a process wave diagram of the method for detecting surface defects of automobile parts according to the present invention;

FIG. 14 is a schematic view of the construction of an automotive component of the present invention;

in the figure: 1. base, 2, support frame, 3, gear shaft, 4, cog belt, 5, part boss, 501, conical surface, 502, swivel, 6, meshing tooth, 7, driving gear shaft, 8, grooved wheel, 9, thumb wheel, 10, thumb wheel holder, 11, transmission belt, 12, second belt wheel, 13, motor, 14, side supporting plate, 15, part storage cylinder, 1501, first motor, 1502, first material shifting plate, 1503, second material shifting plate, 1504, inclined plane 1505, motor output shaft, 1506, transmission belt, 1507, support table, 1508, transmission groove, 1509, rotating roller, 16, blowing device, 1601, air inlet interface, 1602, air nozzle, 17, cleaning device, 1701, second motor, 1702, oil baffle, 1703, oil drain hole, 1704, cleaning disc, 1705, cleaning, 18, testing device, 1801, light bulb, 1802, adjusting bolt, 1803, lifting hole, 1804, sliding groove, 1805. the device comprises a sliding block, 1806, a testing rod, 1807, a conductive connecting rod, 1808, a testing device box, 1809, a swinging rod, 1810, a pressure spring, 1811, a hinged rod, 1812, a limiting rod, 1813, a walking roller, 1814, a second pressure spring, 1815, a second scrap storage box, 1816, a second scrap shoveling knife, 1817, a scrap storage groove, 1818, a magnetic column, 1819, a magnetic column shaft bracket, 1820, a locking nut, 1821, a metal contact end, 19, a water containing box, 20, a second storage barrel, 21, a supporting column, 22, a material baffle plate, 23, a chain, 24, a chain wheel, 25 and a shaft rod.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining with the specific drawings, and it is to be noted that the embodiments and the features in the embodiments can be combined with each other in the application without conflict.

Referring to fig. 1-14, the overall structure of a device and method for detecting surface defects of automobile parts is schematically shown;

the utility model provides an automobile parts surface defect detection device, including being the base 1 that the level was placed, base 1 is the level and is fixed in ground, the left and right sides symmetry on base 1 top is provided with upright in the support frame 2 on base 1 top, 2 tops of the support frame that are located the 1 top left and right sides of base rotate through the bearing and are connected with gear shaft 3, the outer wall of gear shaft 3 is connected with toothed belt 4 through the meshing of the teeth of a cogwheel, the inner wall equidistant of toothed belt 4 is provided with meshing tooth 6, the meshing of the inner circle middle part of toothed belt 4 is connected with driving gear shaft 7, improve the engaging force, improve toothed belt 4's rotation stationarity, the outer wall equidistant bellied part boss 5 that is provided with of toothed belt 4, be convenient.

A poking wheel frame 10 is fixedly arranged at the top end of the base 1 and positioned on the front side of the toothed belt 4, a poking wheel 9 is arranged at the top end of the poking wheel frame 10, a raised poking wheel is arranged on the outer circular surface of the poking wheel 9, a grooved wheel 8 is fixedly arranged at the front end of the outer circular surface of the driving gear shaft 7, a plurality of meshing grooves are formed in the outer circular surface of the grooved wheel 8 at equal intervals, and the poking wheel is sequentially embedded into each meshing groove in the rotating process of the poking wheel 9 so that;

a first belt wheel is fixedly installed at the front end of the shifting wheel 9, a motor 13 is fixedly installed at the top end of the base 1, an output shaft extends forwards from the motor 13, a second belt wheel 12 is fixedly installed at the top end of the output shaft of the motor 13, and a transmission belt 11 is connected between the second belt wheel 12 and the first belt wheel;

a side supporting plate 14 is fixedly installed at the top end of the base 1 and located at the rear side of the toothed belt 4, the side supporting plate 14 is vertically fixed at the top end of the base 1, a part storage barrel 15 is fixedly installed at the front side of the side supporting plate 14, a circular hole penetrating downwards is formed in the middle of the top end of the part storage barrel 15, the part storage barrel 15 is arranged right above the toothed belt 4 at the front end of the side supporting plate 14, a plurality of parts are regularly discharged into the circular hole, a first motor 1501 is symmetrically arranged at the bottom end of the outer wall of the part storage barrel 15, the first motor 1501 is symmetrically arranged close to the bottom end of the outer wall of the part storage barrel 15, a motor output shaft 1505 extends downwards from the first motor 1501, and a first shifting plate 1502 and a second shifting plate 1503 are; through the staggered arrangement of the first material shifting plate 1502 and the second material shifting plate 1503, the first material shifting plate 1502 is cut into a gap between two adjacent parts at the bottommost layer in the circular hole to support the penultimate part at the bottommost layer, the second material shifting plate 1503 gradually withdraws from the bottom end of the part at the bottommost layer to put down the part at the bottommost layer, at the moment, the part boss 5 at the top end of the toothed belt 4 is just positioned at the bottom end of the circular hole of the part storage barrel 15, when the part is put down, the part is just clamped into the part boss 5, and the part is conveyed to the testing device 18 through the intermittent rotation of the toothed belt 4.

The first material shifting plate 1502 is arranged above the second material shifting plate 1503, the height between the first material shifting plate 1502 and the second material shifting plate 1503 is the thickness of one part, the first material shifting plate 1502 and the second material shifting plate 1503 are both fan-shaped thin plates, the first material shifting plate 1502 and the second material shifting plate 1503 are arranged in a disc shape in a staggered mode, the diameters of the first material shifting plate 1502 and the second material shifting plate 1503 are the same, the first material shifting plate 1502 and the second material shifting plate 1503 are of a symmetrical structure when viewed from a depression angle downwards, the perimeter of the outer circular surface of the second material shifting plate 1503 is larger than that of the outer circular surface of the first material shifting plate 1502, and the second material shifting plate 1503 gradually exits from the bottom end of the part at the bottom layer after the first material shifting plate 1502 gradually cuts into a gap between two adjacent parts at the bottom layer in the circular hole;

in this specification, θ indicated in fig. 5 is a linear distance between the diameter of the outer circumferential surface of the second material-stirring plate 1503 and a half of the diameter of the outer circumferential surface of the first material-stirring plate 1502.

The front end of the side supporting plate 14 is sequentially provided with an air blowing device 16, a cleaning device 17 and a testing device 18 from right to left, the air blowing device 16 is as high as the top surface of the toothed belt 4, the cleaning device 17 is arranged above the toothed belt 4, and the testing device 18 is arranged on the top surface of the toothed belt 4; the device is convenient to blow, clean, rotate, clean in a mixing mode and adsorb metal scraps, and finally tests through the testing device 18, so that streamlined tests are realized, mass tests are convenient, and the testing accuracy is improved.

A chain 23 parallel to the toothed belt 4 is arranged on the front side of the top end of the toothed belt 4, the chain 23 rotates at a constant speed on the front side of the top end of the toothed belt 4, chain wheels 24 are meshed and connected to two ends of an inner ring of the chain 23, the middle part of the inner ring of each chain wheel 24 is rotatably connected to a shaft rod 25 through a bearing, and the shaft rod 25 of each chain wheel 24 is fixedly mounted at the top end of the base 1;

left side fixed mounting of toothed belt 4 has second storage cylinder 20, second storage cylinder 20 is upright to be fixed in the 1 left ground of base, the part groove of round hole form has been seted up on second storage cylinder 20 top, part tank bottom middle part on second storage cylinder 20 top is provided with support post 21, support post 21 sets up to the cylinder rod structure, the circular conical surface has been seted up on support post 21's top, the circular cone on support post 21 top faces and is close to the top in second storage cylinder 20, the top of second storage cylinder 20 has set firmly striker plate 22, striker plate 22 top surface is crooked arcwall face, striker plate 22 right-hand member is taken and is leaned on the outer wall on toothed belt 4 right side, striker plate 22 right-hand member is seted up and is supplied the groove of stepping down that part boss 5 flows.

Wherein, lean on the outer wall on 4 right sides of cog-belt through striker plate 22 and right-hand member, when making the part on 4 the cog-belt carry to striker plate 22 left side, through striker plate 22's arcwall face, scrape down the part of waiting to detect on 4 left end part bosss 5 of cog-belt, and guide through striker plate 22's arcwall face, with the part along striker plate 22's top surface cunning to the part inslot of second storage cylinder 20, guide through the circular conical surface on support post 21 top, make a plurality of part like wearing the neat of string of something and putting in the part inslot of second storage cylinder 20, and then improve putting neatly nature of a plurality of part.

Part boss 5 includes conical surface 501, swivel 502, part boss 5 sets up to the round bar structure, the top of part boss 5 is provided with conical surface 501, the conical surface 501 on 5 tops of part boss highly is less than the thickness of part, the outer disc of part boss 5 rotates and is connected with swivel 502, the outer disc diameter of swivel 502 is less than the hole diameter of part, swivel 502 top has been seted up and has been connected in the inclined plane with conical surface 501 bottom, be convenient for the direction, make the part hole install on the outer disc of swivel 502, the bottom of swivel 502 is provided with the annular boss of circle, be convenient for through boss bearing part.

Specifically, a plurality of parts to be detected are orderly stacked in the circular holes of the part storage barrel 15; the parts to be detected which are stacked in the part storage barrel 15 are placed on each part boss 5 at the top end of the toothed belt 4 by the rotation of the first motor 1501 and the staggered arrangement of the first material shifting plate 1502 and the second material shifting plate 1503 in cooperation with the intermittent rotation of the toothed belt 4, so that the complex operation of manually placing the parts is avoided, the labor intensity of workers is reduced, the parts to be detected can be randomly rotated by placing each part to be detected on the part boss 5 through the rotatable rotating ring 502 arranged on each part boss 5, further, the parts to be detected can be rotated in the process of simple and intermittent movement, the speed of cleaning the surfaces of the parts to be detected is improved by the rotation of the parts to be detected, the comprehensive detection efficiency of the testing device 18 on the top end surfaces of the parts to be detected is improved by the rotation of the parts to be detected, the detection accuracy is improved.

The outer wall of the first material shifting plate 1502 and the outer wall of the second material shifting plate 1503 are provided with V-shaped inclined planes 1504, and the V-shaped inclined planes 1504 guide the first material shifting plate 1502 and the second material shifting plate 1503 to be embedded into a gap between two adjacent parts in the rotating process, so that the resistance of the parts to the material shifting plates in the embedding process is reduced.

The top end of the first material shifting plate 1502 and the top end of the second material shifting plate 1503 are provided with a transmission groove 1508 which is installed in a circular arc shape, a conveying belt 1506 which is bent in an arc shape is installed in the transmission groove 1508, rotating rollers 1509 are arranged at two ends of an inner ring of the conveying belt 1506, the rotating rollers 1509 at two ends of the inner ring of the conveying belt 1506 are rotatably connected to two ends of the transmission groove 1508, a supporting table 1507 is arranged in the middle of the inner ring of the conveying belt 1506, and the top surface of the supporting table 1507 is slightly lower than the top surface of the corresponding first material.

Wherein, be arc bending through conveyer belt 1506 on first switch board 1502 top and second switch board 1503 top for when supporting the part in the gap between two adjacent parts of embedding in first switch board 1502 top and second switch board 1503 top, produce when avoiding the part bottom surface to contact with first switch board 1502 top and second switch board 1503 and slide, avoid first switch board 1502 top and second switch board 1503 top to cause the fish tail to the part surface.

The air blowing device 16 comprises an air inlet interface 1601 and air nozzles 1602, the front end face of the air blowing device 16 is provided with a plurality of air nozzles 1602 at equal intervals along the top surface of the toothed belt 4, an independent electromagnetic valve is arranged inside each air nozzle 1602, each air nozzle 1602 is communicated with the air inlet interface 1601 in the air blowing device 16, and the air inlet interface 1601 is arranged at the rear side of the air blowing device 16;

the air nozzles 1602 on the front side of the air blowing device 16 are arranged on the rear side of the toothed belt 4 at a distance of at least two part bosses 5 to the left along the top surface of the toothed belt 4.

In the invention, all the electromagnetic valves of the air nozzle 1602 can be opened by an external controller, or a plurality of electromagnetic valves can be controlled by the external controller to open and close according to a certain rule, so as to control the position of air blowing, realize alternate air blowing and improve the air blowing efficiency.

According to the invention, the part boss 5 moves orderly at the top end of the toothed belt 4 through the intermittent movement of the toothed belt 4; each of 4 tops of toothed belt orderly removal of side blow to treat the part surface through gas blowing device 16, blow to each pivoted part and clean in contactless, clear away the piece dust that treats the part surface, blow through gas blowing device 16's side direction, cooperate chain 23 to promote the rotation of treating the part of waiting to detect, be favorable to making gas blowing device 16 can clean the surface of treating the part of waiting to detect comprehensively, improve the clean neatness and the efficiency of cleaning of treating the part surface of detecting.

The cleaning device 17 comprises a second motor 1701, an oil baffle 1702, an oil discharge hole 1703, a cleaning disc 1704 and cleaning bristles 1705, wherein the second motor 1701 is fixedly arranged on the front side of the side supporting plate 14, an output shaft extends downwards from the bottom end of the second motor 1701, the cleaning disc 1704 is fixedly arranged at the bottom end of the output shaft of the second motor 1701, and a plurality of cleaning bristles 1705 extending downwards are arranged at equal intervals at the bottom end of the cleaning disc 1704.

According to the invention, particle stains which are not cleaned on the detection surface of the part to be detected during non-contact cleaning are cleaned through the cleaning device 17, the cleaning disc 1704 is driven to rotate through the second motor, the cleaning bristles 1705 at the bottom of the cleaning disc 1704 are used for rotationally cleaning the top end surface of each part to be detected which flows through the lower part, and debris brushed by the cleaning bristles 1705 are blown away from the surface of the part through air flow in cooperation with the blowing of the blowing device 16, so that the cleaning thoroughness of the cleaning bristles 1705 is further improved, the part to be detected is pushed by the full chain 23 to rotate in the cleaning process, so that the cleaning bristles 1705 can clean the top end surface of the whole part to be detected, and the integral thoroughness of cleaning is further improved.

Wherein, the invention arranges a circular oil baffle 1702 at the top end of the brushing disc 1704 along the outer circle surface of the brushing disc 1704, the oil baffle 1702 is upright at the top end of the brushing disc 1704, the top end of the oil baffle 1702 is provided with a baffle bent towards the middle part and fixed horizontally, the middle part of the top end of the brushing disc 1704 and the top end of the brushing disc 1704 close to the inner wall of the oil baffle 1702 are provided with a plurality of oil discharge holes 1703 at equal intervals, the top end of the brushing disc 1704 close to the inner wall of the oil baffle 1702 is arranged on the brushing disc 1704 according to the circumference at equal intervals, the oil at the top end of the brushing disc 1704 is placed with a plurality of cleaning oil, the oil at the top end of the brushing disc 1704 seeps downwards through the small holes at the middle part through the rotation of the brushing disc, flows to the top end of the part to be cleaned to brush the top end of the part of the brushing disc 1704 to generate centrifugal force through the rotation of the brushing disc 1704, and pushes the oil to the two sides to be blocked, and then make fluid homodisperse at the dish 1704 top of brushing and be close to in a plurality of oil drain 1703 of oil baffle 1702 inner wall, through the rotation of brushing dish 1704, make the fluid evenly spread out and spill on the surface of part, through the brush of brush hair 1705, and then make the washing of part top end face more thorough.

The middle part of the toothed belt 4 is fixedly provided with the water containing box 19, so that the cleaning is facilitated, the cleaning cleanness is improved, and the environmental pollution caused by the fact that oil is sprayed to the ground is avoided.

The testing device 18 comprises a lifting hole 1803 formed in the side supporting plate 14 and a testing device box 1808 slidably mounted in the lifting hole 1803, the lifting hole 1803 is upright on the top surface of the toothed belt 4, a threaded rod is arranged on the rear side of the testing device box 1808, the threaded rod on the rear side of the testing device box 1808 penetrates through the lifting hole 1803 and extends out to the rear side of the side supporting plate 14, and a locking nut 1820 is mounted on the outer circular surface of the threaded rod extending out of the rear side of the side supporting plate 14;

wherein, through the height of lock nut 1820 locking testing arrangement box 1808 in lift hole 1803, be convenient for adjust the height of testing arrangement box 1808 in lift hole 1803 through lock nut 1820, be convenient for adjust walking roller 1813's height according to the thickness of part to reach the height according to part thickness adjustment testing arrangement box 1808, improve the precision of test, improve the operation simplicity of adjusting.

The height of the conductive connecting rod 1807 is adjusted through the locking nut 1820, the sliding range of the metal contact end 1821 between the insulating area and the metal conductive area of the conductive connecting rod 1807 is adjusted, the up-down floating height of the walking roller 1813 is adjusted, the sensitivity of the light-emitting bulb 1801 is adjusted, the range of the height of a protruding object on the top end face of a part is conveniently detected, and the detection accuracy is improved.

The testing device box 1808 comprises a light-emitting bulb 1801, an adjusting bolt 1802, a lifting hole 1803, a sliding groove 1804, a sliding block 1805, a testing rod 1806, a conductive connecting rod 1807, a testing device box 1808, a swinging rod 1809, a pressure spring 1810, a hinged rod 1811, a limiting rod 1812 and a walking roller 1813, the left side of the testing device box 1808 is provided with the sliding groove 1804 standing upright at the top end of the toothed belt 4, the sliding block 1805 is arranged in the sliding groove 1804 in a sliding fit manner, the left side of the sliding block 1805 is provided with the testing rod 1806 arranged horizontally, the middle part of the testing rod 1806 is provided with a sliding hole, the swinging rod 1809 is connected in the sliding hole in the middle,

a hinged support rod 1811 is fixedly installed at the bottom end of the left side of the testing device box 1808, the middle part of the swing rod 1809 is hinged to the top end of the hinged support rod 1811, a walking roller 1813 horizontally placed is arranged at the bottom end of the swing rod 1809, a limiting rod 1812 is arranged at the left side of the hinged support rod 1811, the top end of the limiting rod 1812 abuts against the bottom end of the swing rod 1809 at the left side of the hinged support rod 1811, and a pressure spring 1810 is fixedly installed at the bottom end of the swing rod; the walking roller 1813 at the left end of the swing rod 1809 has downward swinging elasticity by the pushing of the pressure spring 1810, so that the walking roller 1813 is more favorable for being tightly contacted with the top end face of the part, the detection accuracy is improved, the limiting rod 1812 is used for supporting, and the phenomenon that the walking roller 1813 excessively extends downwards to influence the movement of the part on the toothed belt 4 is avoided.

The top end of the testing device box 1808 is fixedly provided with a light-emitting bulb 1801, the top end of the testing device box 1808 is provided with a threaded hole, an adjusting bolt 1802 is spirally connected in the threaded hole at the top end of the testing device box 1808, the bottom end of the adjusting bolt 1802 penetrates through the testing device box 1808 and extends downwards, the bottom end of the adjusting bolt 1802 extending downwards is rotatably connected with a conductive connecting rod 1807, the middle part of the testing rod 1806 is provided with a metal contact end 1821 connected with the conductive connecting rod 1807 in a sliding contact mode, and positive and negative electrodes of the light-emitting bulb 1801 are respectively connected onto the metal contact end 1821 and. The conductive tie bar 1807 is provided with a metal conductive region and an insulating region, wherein the insulating region is disposed over the metal conductive region.

The invention circularly sends the part to be detected to the lower part of the testing device 18 for surface detection through the intermittent rotation of the toothed belt 4, thereby effectively improving the detection efficiency when detecting a plurality of parts, the intermittent rotation of the toothed belt 4, when the part moves to the lower part of the testing device 18 at the top end of the toothed belt 4 and stops, the part rolls on the surface of the part to be detected through the walking roller 1813, the chain 23 rotates to ensure that the part rotates below the walking roller 1813, the walking roller 1813 rolls at the top end of the part to detect whether the surface of the part has a convex structure, when the surface of the part to be detected has the convex structure, the metal contact end is pushed to slide on the surface of the conductive connecting rod, the positive electrode and the negative electrode of the light-emitting bulb 1801 are connected, the light-emitting bulb 1801 is lightened, the surface of the part to be detected has defects, the detection efficiency is improved, and the part to be detected moves to the lower part, the walking roller 1813 rolls on the top end face of the part to be detected, the whole top end face of the part to be detected is effectively detected, when a bulge appears on the surface of the top end of the part, the walking roller 1813 moves to the bulge, the light-emitting bulb 1801 is lightened by pushing the push rod, the surface of the part to be detected can be rapidly identified to have defects, manual timely screening is facilitated, the detection efficiency is improved, the light-emitting bulb 1801 is lightened, manual reminding is facilitated, and the effectiveness of manual detection is improved.

A second pressure spring 1814 is fixedly installed at the bottom end of the testing device 18, a magnetic column shaft frame 1819 is fixedly installed at the bottom end of the second pressure spring 1814, a magnetic column 1818 of a roller structure is rotatably connected to the bottom end of the magnetic column shaft frame 1819, the axial direction of the magnetic column 1818 is parallel to the top end face of a part, a second scrap storage box 1815 is fixedly installed on the right side face of the magnetic column 1818, the second scrap storage box 1815 is arranged on the left side of the magnetic column shaft frame 1819, a scrap storage groove 1817 is formed in the middle of the second scrap storage box 1815, a second scrap shoveling knife 1816 is arranged on the right side of the second scrap storage box 1815, and the top end of the second scrap shoveling knife 1816 is attached to.

According to the invention, the rotatable magnetic column is arranged in front of the walking roller, the magnetic column is made of a magnet material and has magnetic adsorption force, the magnetic column rolls at the top end of the part to be detected, the magnetic column adsorbs fragments in a small hole at the top end of the part to be detected, the excessive and tilting of the fragments in the small hole is avoided, the fragments adsorbed on the surface of the magnetic column are scraped by attaching the top end of the second scrap shoveling knife 1816 to the surface of the magnetic column 1818, the fragments are collected, the cleaning of the part to be detected is effectively improved, and the secondary scratch of the fragments to the top end surface of the part is reduced.

s1, placing parts: a plurality of parts to be detected are orderly stacked in the circular holes of the part storage barrel 15;

s2, placing parts: the parts to be detected which are neatly stacked in the part storage barrel 15 in the step S1 are placed at the top end of the toothed belt 4 at equal intervals according to a certain rule, the parts to be detected which are stacked in the part storage barrel 15 are placed on each part boss 5 at the top end of the toothed belt 4 by the rotation of the first motor 1501 through the staggered arrangement of the first material shifting plate 1502 and the second material shifting plate 1503 in cooperation with the intermittent rotation of the toothed belt 4, and the positions of the parts to be detected are fixed through the part bosses 5;

s3, moving parts: intermittently moving the part to be detected of the part boss 5 arranged at the top end of the toothed belt 4 in the step S2 through the toothed belt 4, so that the part boss 5 orderly moves at the top end of the toothed belt 4;

s4, non-contact cleaning: performing non-contact air blowing cleaning on each part to be detected which orderly moves at the top end of the toothed belt 4 in the step S3, removing the scrap and dust on the surface of the part to be detected, and improving the cleaning efficiency;

s5, surface cleaning: cleaning the surface of each part to be detected after the non-contact cleaning in the step S4, cleaning the particle stains which are not cleaned on the detection surface of the part to be detected during the non-contact cleaning by the cleaning device 17, and improving the detection accuracy of the detection surface of the part to be detected;

s6, mixed brushing: in the process of cleaning the surface in the step S5, the end surface of the part to be detected is cleaned by blowing air through the blowing device 16, and the detection surface of the part to be detected is cleaned by matching with the cleaning device 17, so that the cleaning efficiency is improved, and the cleanliness of the detection surface of the part to be detected is improved;

s7, rotating parts: in the step S4-step S6, the part intermittently stops when moving to the position of the air blowing device 16 or the cleaning device 17 through the rotation of the chain 23 in the intermittent moving process, and the part still keeps rotating in the stopping process;

s8 surface test: and (4) performing surface detection on the part to be detected after cleaning in the step (S6), when the part is moved to the position below the testing device 18 at the top end of the toothed belt 4 and stays, rolling on the surface of the part to be detected through the walking roller 1813, rotating the part below the walking roller 1813 in cooperation with the rotation of the chain 23, rolling the walking roller 1813 at the top end of the part, detecting whether the surface of the part has a convex structure, and when the convex structure appears on the surface of the detected part, pushing the metal contact end 1821 to slide on the surface of the conductive connecting rod 1807 to switch on the positive electrode and the negative electrode of the light-emitting bulb 1801, so that the light-emitting bulb is lighted up, and the detected surface.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an automobile parts surface defect detection device, is including the base that is the level and places, its characterized in that: the base is horizontally fixed on the ground, the left side and the right side of the top end of the base are symmetrically provided with support frames standing upright on the top end of the base, the top ends of the support frames positioned on the left side and the right side of the top end of the base are rotatably connected with a gear shaft through a bearing, the outer wall of the gear shaft is connected with a toothed belt through gear teeth in a meshed manner, the middle of the inner ring of the toothed belt is connected with a driving gear shaft in a meshed manner, and the outer wall of the toothed belt;

2. The apparatus for detecting surface defects of automobile parts according to claim 1, wherein: the part boss comprises a conical surface and a rotating ring, the part boss is of a round rod structure, the conical surface is arranged at the top end of the part boss, the height of the conical surface at the top end of the part boss is lower than the thickness of the part, the rotating ring is rotatably connected to the outer circular surface of the part boss, the diameter of the outer circular surface of the rotating ring is smaller than the diameter of an inner hole of the part, the top end of the rotating ring is connected to the inclined surface with the bottom end of the conical surface, and the bottom end of the rotating ring is provided with a circular boss.

3. The apparatus for detecting surface defects of automobile parts according to claim 1, wherein: the top end of the first material shifting plate and the top end of the second material shifting plate are provided with arc-shaped transmission grooves, conveying belts which are in arc-shaped bending are installed in the transmission grooves, rotating rollers are arranged at two ends of an inner ring of each conveying belt, the rotating rollers at two ends of the inner ring of each conveying belt are rotatably connected to two ends of each transmission groove, a supporting table is arranged in the middle of the inner ring of each conveying belt, and the top surface of each supporting table is slightly lower than the top surface of the corresponding first material shifting plate or the top surface of the corresponding second material shifting plate.

4. The apparatus for detecting surface defects of automobile parts according to claim 3, wherein: the outer wall of the first material shifting plate and the outer wall of the second material shifting plate are both provided with V-shaped inclined planes.

5. The apparatus for detecting surface defects of automobile parts according to claim 1, wherein: the blowing device comprises an air inlet interface and a plurality of air nozzles, the front end face of the blowing device is provided with the plurality of air nozzles at equal intervals along the top surface of the toothed belt, each air nozzle is communicated with the air inlet interface in the blowing device, and the air inlet interface is arranged at the rear side of the blowing device;

6. The apparatus for detecting surface defects of automobile parts according to claim 1, wherein: cleaning device includes second motor, oil baffle, oil drain hole, brush dish, brush hair clearly, second motor fixed mounting is in collateral branch fagging front side, the second motor bottom stretches out downwards there is the output shaft, the output shaft bottom fixed mounting of second motor has brush dish clearly, brush dish bottom equidistant clear brush hair that a plurality of stretches out downwards that is provided with clearly.

7. The apparatus for detecting surface defects of automobile parts according to claim 6, wherein: the top of the cleaning dish is equipped with the annular oil baffle of circle along the outer disc of cleaning dish, the oil baffle is in the cleaning dish top is upright form, it is provided with to bend and be the horizontally fixed baffle to the middle part to keep off the oil baffle top, cleaning dish top middle part and close to in the equidistant a plurality of oil drain hole of having seted up in cleaning dish top of keeping off the oil baffle inner wall, cleaning dish top is close to in a plurality of oil drain hole of keeping off the oil baffle inner wall and arranges according to the equidistant of circumference on cleaning dish.

8. The apparatus for detecting surface defects of automobile parts according to claim 1, wherein: the testing device comprises a lifting hole formed in the side supporting plate and a testing device box arranged in the lifting hole in a sliding mode, the lifting hole is erected on the top surface of the toothed belt, a threaded rod is arranged on the rear side of the testing device box, the threaded rod on the rear side of the testing device box penetrates through the lifting hole to extend out to the rear side of the side supporting plate, and a locking nut is arranged on the outer circular surface of the threaded rod extending out of the rear side of the side supporting plate;

9. The apparatus for detecting surface defects of automotive parts according to claim 8, wherein: testing arrangement bottom fixed mounting has the second pressure spring, the bottom fixed mounting of second pressure spring has magnetism post pedestal, magnetism post pedestal bottom rotates the magnetism post that is connected with the cylinder structure, the axial of magnetism post is parallel with the top face of part, magnetism post right flank fixed mounting has the second to store up bits box, the second stores up the bits box and sets up in the left side of magnetism post pedestal, the second stores up bits box middle part and has seted up the chip storage groove, the second stores up bits box right side and is provided with second shovel bits sword, second shovel bits sword top and the laminating of magnetism post surface.

10. A method for detecting surface defects of automobile parts, wherein the method is accomplished by the apparatus of any one of claims 2, 4, 5, 6 or 9, and comprises the following steps: