CN-122015641-A - Device for rapidly identifying reference surface of retainer

CN122015641ACN 122015641 ACN122015641 ACN 122015641ACN-122015641-A

Abstract

The invention belongs to the technical field of retainer detection, and particularly relates to a device for quickly identifying a retainer reference surface, which comprises symmetrically arranged conveying belts, wherein the upper end of each conveying belt is fixedly connected with a protection plate, an arc-shaped separation plate is arranged between two conveying belts, one end of each separation plate is fixedly connected with an L-shaped conveying plate, and the surface of each separation plate is fixedly connected with an arc-shaped strip. When the control system judges that the reference surface of the object to be detected is reverse, the deviation exceeds the standard or inclines through image analysis, contour fitting and normal vector comparison, an instruction can be immediately sent to the telescopic cylinder to drive the ejector pin to push the limiting plate, and meanwhile, the linkage pushing cylinder pushes unqualified products to a special collecting tank rapidly, and the whole process can finish the separation of the unqualified products without manual intervention.

Inventors

DUN PAN
WANG ZHANGFENG
LI DEJIN
LI XIAOHUI
WU TIANXING
YAN JIAWEI

Assignees

浙江康普瑞汽车零部件有限公司

Dates

Publication Date: 20260512
Application Date: 20251226

Claims (10)

1. The device for rapidly identifying the datum plane of the retainer comprises symmetrically arranged conveying belts (1) and is characterized in that each conveying belt (1) is fixedly connected with a protection plate (3) at the upper end, an arc-shaped separation plate (2) is arranged between the two conveying belts (1), one end of each separation plate (2) is fixedly connected with an L-shaped conveying plate (20), the surface of each separation plate (2) is fixedly connected with an arc-shaped strip (4), the upper ends of the separation plates (2) are fixedly connected with rectangular plates (5), two sides of each rectangular plate (5) are respectively provided with an adjusting mechanism (6), the upper ends of the conveying plates (20) are slidably connected with objects to be detected (7), one side of each conveying plate (20) is provided with a supporting table (9), the upper ends of the supporting tables (9) are provided with pushing cylinders (8), and one side of each rectangular plate (5) is provided with a control system.
2. The device for rapidly identifying the datum plane of the retainer according to claim 1, wherein one end of the separating plate (2) is provided with movable grooves (21) along two sides of the conveying plate (20), the separating plate (2) is symmetrically provided with supporting rods (22) along the lower end of the length of the separating plate, the upper ends of the supporting rods (22) are fixedly connected with the lower surface of the conveying plate (20), two sides of the conveying plate (20) are elastically hinged with limiting plates (23), a sector opening is formed in the body of the limiting plates (23), a baffle plate (24) is arranged above the conveying plate (20), and the surface of the baffle plate (24) is fixedly connected with the surface of the rectangular plate (5) in the vertical direction.
3. The device for quickly identifying the datum plane of the retainer according to claim 2, wherein the adjusting mechanism (6) comprises a signal wire (61), one end of the signal wire (61) is electrically connected with a signal cylinder (62), an outer shell body of one end of the signal cylinder (62) is fixedly connected with the upper end of the right angle plate (5), a piston rod of the signal cylinder (62) is slidably connected with the body of the right angle plate (5), an angle adjusting cylinder (64) is fixedly connected with the outer surface of the signal cylinder (62), rotating rods (63) are symmetrically arranged at the upper end of the right angle plate (5) along the direction of a symmetrical axis, and two ends of the rotating rods (63) are fixedly connected with the surface of the right angle plate (5) through bearing bases.
4. The device for rapidly identifying the datum plane of the retainer according to claim 3, wherein the surface of the rotating rod (63) is fixedly connected with a mechanical arm (65), the tail end of the mechanical arm (65) is rotatably connected with a clamping disc (66), the outer surface of the clamping disc (66) is matched with the body of the limiting plate (23) through a fan-shaped opening, one side of the right-angle plate (5) is provided with a telescopic cylinder (67), one side of the baffle (24) is provided with a limiting disc (68), a spring (69) is arranged between the limiting disc (68) and the baffle (24), two ends of the spring (69) are fixedly connected with the limiting disc (68) and the side face of the baffle (24) respectively, the lower end of the baffle (24) is slidably connected with a thimble (610), the side face of the thimble (610) is fixedly connected with a piston rod of the telescopic cylinder (67) through a connecting rod, two ends of the thimble (610) are respectively contacted with the side face of the limiting plate (23), and one end of the piston rod (611) of the signal cylinder (62) is fixedly connected with one end of the camera.
5. The device for quickly identifying the datum plane of the retainer according to claim 4, wherein the surface of the clamping disc (66) is provided with an arc-shaped surface matched with the surface of the object to be detected (7), and the arc-shaped surface of the clamping disc (66) is provided with a rubber gasket.
6. The device for quickly identifying the reference surface of the retainer according to claim 5, wherein the control system comprises an image processing unit, a position judging unit and an execution control unit, the image processing unit is used for receiving the image of the object (7) to be detected acquired by the camera (611) and extracting the outline feature of the object (7) to be detected through an edge detection algorithm, the position judging unit is used for calculating the offset of the geometric center of the object (7) to be detected and a preset reference surface based on the outline feature and judging whether the reference surface is qualified according to the following formula , wherein, Is the geometric center coordinate of the outline of the object to be detected, For the preset reference plane center coordinates, To allow a maximum offset threshold.
7. The device for quickly identifying a reference surface of a holder according to claim 6, wherein the image processing unit further comprises a contour fitting module for performing least square ellipse fitting on the set of edge points of the object (7) to be inspected, fitting an elliptic equation And according to the length-axis ratio value of the fitting ellipse Judging whether the object (7) to be detected is inclined, wherein A, B, C, D, E and F are elliptical geometric characteristic coefficients obtained based on fitting of an edge point set of the object (7) to be detected, and the core constraint condition of an elliptical equation is met Specifically, A is the x2 term coefficient of the ellipse fitted to the outline of the object (7) to be detected, which is related to the curvature of the ellipse in the x-axis direction, reflects the degree of extension of the ellipse in the x-axis direction, the larger the absolute value of the coefficient is, the more remarkable the curvature of the ellipse in the x-axis direction is, B is the xy cross term coefficient of the ellipse fitted to the outline of the object (7) to be detected, the core reflects the inclination degree of the ellipse, the longer/shorter axis of the ellipse is parallel to the x-axis and the y-axis of the coordinate system when B=0 is, the larger the absolute value of the B is, the inclination angle of the ellipse relative to the coordinate system is larger, C is the y2 term coefficient of the ellipse fitted to the outline of the object (7) to be detected, which is related to the curvature of the ellipse in the y-axis direction, the larger the absolute value of the coefficient is, the curvature of the ellipse in the y-axis direction is more remarkable the curvature of the ellipse in the y-axis direction is, the ratio of the length of the ellipse to the shorter axis is calculated D is the x first order coefficient of the ellipse fitted to the outline of the object (7) to be detected, is directly related to the geometric center x coordinate of the ellipse, and can be combined with the E coefficient through the formula E is the y first order coefficient of the ellipse fitted to the outline of the object (7) to be detected, and is directly related to the y coordinate of the geometric center of the ellipse, and the D coefficient can be combined by a formula And F is determined by the overall distribution characteristics of the edge point set and is used for balancing the overall formula relation of an elliptic equation, so that the error between a fitting result and the actual contour of the object to be detected (7) is ensured to be minimum.
8. The device for quickly recognizing a reference surface of a cage according to claim 7, wherein the position judging unit further comprises a reference surface feature extracting module for calculating a reference surface normal vector direction of the object (7) to be inspected based on a fitting elliptic equation and comparing with a standard normal vector by , wherein, Is the normal vector of the standard reference plane, Is the normal vector of the reference surface of the object (7) to be detected.
9. The apparatus for quickly identifying a cage datum of claim 8, wherein the control system further comprises an adaptive learning module for dynamically updating the offset threshold based on historical sensed data Threshold of inclination And an angle threshold The formula is , wherein, For learning rate, N is the number of samples detected in the last batch, For the offset of the i-th sample, Is the average offset.
10. A device for rapid identification of a reference surface of a cage according to claim 9, characterized in that the surface of the transport plate (20) is coated with a lubricating layer.

Description

Device for rapidly identifying reference surface of retainer Technical Field The invention relates to the technical field of retainer detection, in particular to a device for quickly identifying a retainer reference surface. Background The retainer is used as one of core parts of the bearing, and the machining precision of the reference surface directly determines the rotation precision, the bearing capacity and the service life of the bearing after the bearing is assembled. In the mass production flow of the retainer, multiple working procedures such as plane grinding, precision machining and the like are needed, wherein if the reference plane grinding anti-problem occurs in the front plane grinding working procedure, the positioning deviation of the subsequent working procedures can be caused. In the prior art, before the retainer is conveyed to a processing machine through an automatic feeding disc and a wire material channel, the positive and negative identification of the reference surface is completely judged by naked eyes of operators. The method has the obvious defects that firstly, the manual identification efficiency is low, the high-speed circulation requirement of an automatic production line is difficult to adapt, the overall production beat is restricted, secondly, operators repeatedly perform the same identification action for a long time, visual fatigue is easy to generate, the visual fatigue is influenced by factors such as individual experience and attention concentration, subjective errors are large, unqualified products with reversely worn reference surfaces cannot be reliably identified, thirdly, once the retainer with reversely worn reference surfaces flows into the subsequent processing procedure, the product size is out of tolerance and the structure is damaged due to positioning errors, the whole batch of products are finally scrapped, the production loss and the manufacturing cost are greatly increased, fourthly, the manual screening lacks standardized judgment basis, the precise interception of the unqualified products is difficult to realize, and great challenges are brought to quality control of large-scale production. In order to solve the problems, the invention provides a device for quickly identifying the reference surface of a retainer. Disclosure of Invention Based on the technical problems that the reference surface is ground reversely after the existing detection object plane is ground and cannot be identified, and the processed product is scrapped, the invention provides a device for quickly identifying the reference surface of a retainer. The device for quickly identifying the datum plane of the retainer comprises symmetrically arranged conveying belts, wherein the upper end of each conveying belt is fixedly connected with a protection plate, an arc-shaped separation plate is arranged between the two conveying belts, one end of each separation plate is fixedly connected with an L-shaped conveying plate, the surface of each separation plate is fixedly connected with an arc-shaped strip, the upper end of each separation plate is fixedly connected with a rectangular plate, two sides of each rectangular plate are respectively provided with an adjusting mechanism, the upper end of each conveying plate is slidably connected with an object to be detected, one side of each conveying plate is provided with a supporting table, the upper end of each supporting table is provided with a pushing cylinder, and one side of each rectangular plate is provided with a control system. Preferably, the movable groove has been seted up along the one end of division board the both sides of delivery board, the division board is provided with the bracing piece along the lower extreme symmetry of its length, the upper end of bracing piece with the lower fixed surface of delivery board is connected, the both sides elastic hinge of delivery board has the limiting plate, fan-shaped mouth has been seted up to the body of limiting plate, the top of delivery board is provided with the baffle, the surface of baffle with the vertical direction fixed surface of right angle plate is connected. Preferably, the adjusting mechanism comprises a signal wire, one end of the signal wire is electrically connected with a signal cylinder, an outer shell body of one end of the signal cylinder is fixedly connected with the upper end of the right angle plate, a piston rod of the signal cylinder is slidably connected with a body of the right angle plate, an angle adjusting cylinder is fixedly connected with the outer surface of the signal cylinder, rotating rods are symmetrically arranged at the upper end of the right angle plate along the direction of a symmetrical axis, and two ends of the rotating rods are fixedly connected with the surface of the right angle plate through bearing bases. Preferably, the fixed surface of dwang is connected with the arm, the end of arm rotates and is connected with the grip block, the