An automatic detection device for inner diameter of precision bearings

Abstract

An automatic detection device for the inner diameter of a precision bearing. The present invention relates to the technical field of bearing detection devices, and relates to an automatic detection device for the inner diameter of a precision bearing, which comprises a machine platform, a loading and conveying mechanism, a mechanical arm, a clamping mechanism, a detection mechanism, and a unloading and conveying mechanism. The loading and conveying mechanism is used to convey and automatically adjust the position of the bearing, and the mechanical arm drives the clamping mechanism to move and automatically clamp or place the bearing. The detection mechanism comprises a vertical moving device, a mounting plate, a rotating motor, a fixed cylinder, a rotating cylinder, a cross roller, an oil seal, a rotating gear, a clamping block, an electronic plug gauge, and a placement seat. The detection mechanism can realize the automatic descent and rotation detection of the electronic plug gauge, and the accuracy of the rotation position of the electronic plug gauge can be ensured through mechanical control, without problems such as skewness or uneven force, thereby avoiding the problems of inaccurate detection data and low detection efficiency caused by the current manual use of detection tools, and realizing automatic detection.

Description

Technical Field

[0001] The invention relates to the technical field of bearing detection devices, and in particular to an automatic detection device for the inner diameter of a precision bearing. Background Art

[0002] Bearings are items that carry shafts for rotation or sliding. In the market, bearings are needed in situations where rotation or axial sliding is required to ensure that the design performance of the machine meets the use requirements. The key to bearing quality is dimensional accuracy. During the production process, changes in molds, tools, fixtures, and machine tool processing data will lead to dimensional inconsistency. What customers need is 100% qualified bearing dimensions, so key dimensions need to be tested.

[0003] In the prior art, the inspection of bearings requires manual participation. The inner diameter of the bearing is measured manually using a manual measurement mode such as a go / no-go gauge. On the one hand, there is no numerical representation. On the other hand, the qualified rate of repeated inspections varies due to different efforts of personnel. Or the bearings need to be placed in the inspection device one by one. Moreover, manual inspection is inefficient and not suitable for batch inspection. It is necessary to implement automatic inspection to meet the quality control needs of batch production. Summary of the invention

[0004] In view of this, the present invention provides an automatic detection device for the inner diameter of a precision bearing to solve the above technical problem.

[0005] An automatic inner diameter detection device for a precision bearing includes a machine platform and a detection mechanism disposed on the machine platform. The detection mechanism includes a vertical moving device, a mounting plate disposed on the vertical moving device, a rotating motor disposed on the mounting plate, a fixed cylinder fixedly disposed on the mounting plate, a rotating cylinder movably disposed on the fixed cylinder, a cross roller disposed between the fixed cylinder and the rotating cylinder, a rotating gear fixedly disposed on the rotating cylinder, two clamping blocks fixedly disposed on the rotating cylinder, an electronic plug gauge fixedly disposed on the clamping block, and a placement seat located below the electronic plug gauge. The mounting plate is provided with a first mounting hole, a second mounting hole located on one side of the first mounting hole, a first circular ring disposed at one end of the second mounting hole, and a second circular ring disposed on the end surface of the mounting plate facing the placement seat. The first circular ring extends from the second mounting hole toward one end of the placement seat, and the other end of the first circular ring is fixedly provided with the fixed cylinder, and the first circular ring and the second circular ring are in an annular structure. The second circular ring is coaxially arranged with the first circular ring and the diameter of the second circular ring is larger than the diameter of the first circular ring. The second circular ring located between the first circular ring and the first mounting hole is provided with an avoidance hole. The output shaft of the rotating motor is arranged in the first mounting hole, the fixed cylinder is arranged on the axial end face of the first circular ring, and the rotating cylinder is rotatably sleeved on the outer side wall of the fixed cylinder. A V-shaped mounting groove is respectively arranged on the side walls where the fixed cylinder and the rotating cylinder are in contact, and a cross roller is arranged between the two V-shaped mounting grooves. The rotating gear is fixedly connected to one end of the rotating cylinder facing the mounting plate, the rotating gear is located between the rotating cylinder and the mounting plate, the rotating gear passes through the avoidance hole and meshes with the output shaft of the rotating motor, the two clamping blocks fix the electronic plug gauge, the clamping block is fixedly connected to the rotating cylinder, and the clamping block will rotate with the rotating cylinder.

[0006] Furthermore, the automatic detection device for the inner diameter of the precision bearing also includes a loading and conveying mechanism arranged on the machine platform, a robotic arm arranged on the machine platform, a clamping mechanism arranged on the robotic arm, and a unloading and conveying mechanism arranged on the machine platform.

[0007] Furthermore, the loading and conveying mechanism includes a first conveyor belt arranged on the machine platform, a second conveyor belt arranged on the machine platform, a stopper arranged on the second conveyor belt, a material blocking cylinder arranged on the second conveyor belt, and a baffle arranged on the second conveyor belt, and limiting plates are arranged on three sides of the first conveyor belt away from the second conveyor belt.

[0008] Further, the stopper is vertically arranged on the side wall of the second conveyor belt away from the first conveyor belt, the stopper is arranged on the frame of the second conveyor belt, the second conveyor belt is located in the output direction of the first conveyor belt, the width of the second conveyor belt is smaller than the width of the first conveyor belt, and the width of the second conveyor belt can accommodate a bearing to be inspected to pass through.

[0009] Furthermore, the material blocking cylinder is arranged above the second conveyor belt, the output direction of the material blocking cylinder is toward the second conveyor belt, the baffle is arranged at one end of the second conveyor belt and located in the conveying direction of the second conveyor belt, and the baffle is provided with a V-shaped groove.

[0010] Furthermore, the clamping mechanism includes a clamping mounting plate arranged on the mechanical arm, a clamping cylinder arranged on the clamping mounting plate, and a pressing assembly arranged on the clamping mounting plate.

[0011] Furthermore, one end of the clamping mounting plate is connected to the robotic arm, and the other end is provided with a U-shaped notch. Two output ends of the clamping cylinder are respectively provided with clamping blocks, and the clamping blocks are located between the pressing assembly and the clamping mounting plate.

[0012] Furthermore, the pressing assembly includes four driving screws arranged on the clamping mounting plate, a pressure plate arranged on the driving screws, and four springs respectively sleeved on the driving screws, one end of the driving screw is movably passed through the clamping mounting plate and is provided with a nut portion, and the other end is connected to the pressure plate, the diameter of the nut portion is larger than the diameter of the driving screw, the pressure plate is a square frame structure, one end of the spring abuts against the pressure plate, and the other end abuts against the clamping mounting plate.

[0013] Furthermore, the unloading conveying mechanism includes a third conveyor belt arranged on the machine platform, and a fourth conveyor belt arranged on the machine platform, the third conveyor belt is used to convey bearings that meet the standards, and the fourth conveyor belt is used to convey unqualified bearings.

[0014] Furthermore, the detection mechanism also includes two oil seals arranged on the rotating cylinder and the mounting plate, one of the oil seals is located between the rotating cylinder and the second ring, and the other oil seal is located between the rotating cylinder and the fixed cylinder.

[0015] Compared with the prior art, the automatic inner diameter detection device of the precision bearing provided by the present invention realizes the automatic descent and automatic rotation of the electronic plug gauge through the detection mechanism, thereby laying a solid foundation for realizing automatic detection. Specifically, the mounting plate is provided with a first mounting hole, a second mounting hole, a first ring, and a second ring. At the same time, the fixed cylinder is arranged on the axial end face of the first ring, and the rotating cylinder is rotatably sleeved on the outer side wall of the fixed cylinder. The side walls of the fixed cylinder and the rotating cylinder that are in contact with each other are provided with cross rollers to support the rotation of the rotating cylinder. The second ring is provided with an avoidance hole that communicates with the first mounting hole. Part of the rotating gear is located in the avoidance hole, and the rotating gear is connected to one end of the rotating cylinder facing the mounting plate. The rotating gear passes through the avoidance hole and meshes with the output shaft of the rotating motor, so that the rotating gear is driven to rotate by the rotating motor, and the rotating gear is connected to the rotating cylinder, thereby driving the rotating cylinder to rotate. The rotating cylinder clamps the electronic plug gauge via the two clamping blocks, so that it rotates along with the rotating cylinder, realizing automatic rotation of the electronic plug gauge. Thus, the accurate rotation position of the electronic plug gauge can be ensured through mechanical control without problems such as skewness or uneven force, thus avoiding the problems of inaccurate detection data and low detection efficiency caused by the current manual use of detection tools, and realizing automatic detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an automatic detection device for the inner diameter of a precision bearing provided by the present invention.

[0017] Figure 2 for Figure 1 A schematic structural diagram of a clamping mechanism of an automatic detection device for inner diameter of a precision bearing.

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the detection mechanism of the automatic detection device for the inner diameter of the precision bearing.

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of a mounting plate of an automatic detection device for inner diameter of a precision bearing.

[0020] Figure 5 for Figure 4 A cross-sectional view of a mounting plate provided in an automatic detection device for inner diameter of a precision bearing.

[0021] Figure 6 for Figure 3 A cross-sectional view of a detection mechanism of an automatic detection device for inner diameter of a precision bearing.

[0022] Explanation of the accompanying figures: machine 10, feeding conveying mechanism 20, first conveyor belt 21, second conveyor belt 22, block 23, material blocking cylinder 24, baffle 25, V-groove 251, robotic arm 30, clamping mechanism 40, clamping mounting plate 41, clamping cylinder 42, pressing assembly 43, plug screw 431, pressure plate 432, spring 433, nut part 434, clamping block 44, detection mechanism 50, vertical moving device 51, mounting plate 52, first mounting hole 521, second mounting hole 522, first ring 523, second ring 524, avoidance hole 525, rotating motor 53, fixing cylinder 54, rotating cylinder 55, cross roller 56, oil seal 57, rotating gear 58, clamping block 59, electronic plug gauge 510, placement seat 511, unloading conveying mechanism 60, third conveyor belt 61, fourth conveyor belt 62. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0024] like Figures 1 to 6 As shown, it is a schematic diagram of the structure of the automatic inner diameter detection device of the precision bearing provided by the present invention. The automatic inner diameter detection device of the precision bearing includes a machine table 10, a feeding conveying mechanism 20 arranged on the machine table 10, a mechanical arm 30 arranged on the machine table 10, a clamping mechanism 40 arranged on the mechanical arm 30, a detection mechanism 50 arranged on the machine table 10, and a unloading conveying mechanism 60 arranged on the machine table 10. It can be imagined that the automatic inner diameter detection device of the precision bearing also includes some other functional modules, such as connection components, installation components, etc., which are well known to those skilled in the art and will not be repeated here.

[0025] The machine 10 is used to carry the above-mentioned functional modules, so the machine 10 is provided with a variety of functional structures, such as screws, bolts, clamps, etc. to complete the installation and assembly of the above-mentioned functional modules. It can be set according to actual needs and will not be described in detail one by one here.

[0026] The loading conveying mechanism 20 is used for conveying and automatically adjusting the bearing position and includes a first conveyor belt 21 arranged on the machine table 10, a second conveyor belt 22 arranged on the machine table 10, a stopper 23 arranged on the second conveyor belt 22, a material blocking cylinder 24 arranged on the second conveyor belt 22, and a baffle 25 arranged on the second conveyor belt 22.

[0027] The first conveyor belt 21 and the second conveyor belt 22 are a part of a belt conveyor. It is well known in the art that the belt conveyor also includes a driving wheel, a driven wheel, a rotating motor, and a frame. The driving wheel is driven by the rotating motor to rotate, and the first and second conveyor belts 21 and 22 are sleeved on the driving wheel and the driven wheel, thereby driving the first and second conveyor belts 21 and 22 to rotate. When the first and second conveyor belts 21 and 22 are running, the workpiece moves with the first and second conveyor belts 21 and 22 by the friction between the first and second conveyor belts 21 and 22 to achieve transportation.

[0028] Limiting plates are provided on the three sides of the first conveyor belt 21 away from the second conveyor belt 22 to prevent the bearing from falling out of the first and second conveyor belts 21 and 22. The stopper 23 is vertically arranged on the side wall of the second conveyor belt 22 away from the first conveyor belt 21. It can be imagined that the stopper 23 is arranged on the frame of the second conveyor belt 22 to prevent the stopper 23 from moving with the second conveyor belt 22. The second conveyor belt 22 is located in the output direction of the first conveyor belt 21, and the width of the second conveyor belt 22 is smaller than the width of the first conveyor belt 21. The width of the second conveyor belt 22 can accommodate a bearing to be inspected. During transportation, a large number of bearings to be inspected are placed on the first conveyor belt 21, and the bearings to be inspected are transported in the direction of the second conveyor belt 22. The transported bearings to be inspected will be blocked by the stopper 23 and neatly arranged along the stopper 23, and then through the transportation of the second conveyor belt 22, the bearings to be inspected arranged one by one will be moved toward the direction of the blocking cylinder 24 and the baffle 25.

[0029] The blocking cylinder 24 is arranged above the second conveyor belt 22 through a bracket and other connecting components. The output direction of the blocking cylinder 24 is toward the second conveyor belt 22, so that when a bearing to be inspected passes through the blocking cylinder 24, the blocking cylinder 24 blocks the subsequent bearings, ensuring that the bearings to be inspected can reach the baffle 25 one by one, thereby facilitating the clamping of the clamping mechanism 40. The baffle 25 is arranged at one end of the second conveyor belt 22 and is located in the conveying direction of the second conveyor belt 22 to block the continued movement of the bearing to be inspected. The baffle 25 is provided with a V-shaped groove 251. The V-shaped groove 251 can position the conveyed bearing to be inspected to facilitate subsequent clamping.

[0030] The mechanical arm 30 is used to drive the clamping mechanism 40 to move in three axes and flip, so as to transfer the bearing to be inspected from the second conveyor belt 22 to the inspection mechanism 50 for inspection. The mechanical arm 30 should be a prior art and will not be described in detail here.

[0031] The clamping mechanism 40 includes a clamping mounting plate 41 disposed on the robot arm 30 , a clamping cylinder 42 disposed on the clamping mounting plate 41 , and a pressing assembly 43 disposed on the clamping mounting plate 41 .

[0032] One end of the clamping mounting plate 41 is fixedly connected to the mechanical arm 30 , and the other end is provided with a U-shaped notch to facilitate avoiding the bearing to be inspected.

[0033] The two output ends of the clamping cylinder 42 are respectively provided with clamping blocks 44, and the clamping blocks 44 are located between the pressing assembly 43 and the clamping mounting plate 41. The clamping blocks 44 are driven to move closer to or farther from each other by the clamping cylinder 42 to clamp or release the bearing to be inspected. It is conceivable that the clamping blocks 44 are in an arc-shaped structure to facilitate clamping the bearing to be inspected.

[0034] The pressing assembly 43 is used to press the flange of the bearing to be inspected, so as to facilitate clamping and placement, and avoid the bearing being tilted or flipped due to the error of the clamping cylinder 42 itself when clamping and placing the bearing to be inspected, resulting in failure to clamp or place the bearing. It is conceivable that for some bearings without flanges, the pressing assembly 43 can be omitted. The pressing assembly 43 includes four plug screws 431 arranged on the clamping mounting plate 41, a pressure plate 432 arranged on the plug screw 431, and four springs 433 respectively sleeved on the plug screws 431.

[0035] One end of the plug screw 431 can be movably passed through the clamping mounting plate 41 and is provided with a nut portion 434, and the other end is fixedly connected to the pressure plate 432. The diameter of the nut portion 434 is larger than the diameter of the plug screw 431, so that the nut portion 434 cannot pass through the clamping mounting plate 41. When the plug screw 43 moves in a direction away from the clamping mounting plate 41, it will be stuck by the nut portion 434, thereby limiting the displacement of the plug screw 43. The pressure plate 432 is a square frame structure, which can be used to press the flange of the flanged bearing when clamping or placing the bearing to prevent the bearing to be inspected from moving. One end of the spring 433 abuts on the pressure plate 432, and the other end abuts on the clamping mounting plate 41. The spring 433 drives the pressure plate 432 to move in a direction away from the clamping mounting plate 41 through its own elastic force. After the pressure plate 432 presses the flange of the bearing, the clamping installation plate 41 continues to press down, so that the spring 433 is compressed for a certain distance, and then the clamping cylinder 42 is driven to clamp the bearing to be inspected, so as to achieve the goal of first pressing the bearing to be inspected and then clamping it during clamping, thereby avoiding clamping failure. When the bearing to be inspected is clamped, the spring 433 is still in a compressed state, that is, the pressure plate 432 is still against the flange of the bearing to be inspected. When placing the bearing to be inspected, the pressure plate 432 first puts the flange of the bearing to be inspected in place, and then the clamping cylinder 42 releases the bearing to be inspected. At this time, since the spring 433 is in a compressed state, the pressure plate 432 will keep pressing the flange of the bearing to be inspected, and then move on the clamping installation plate 41, thereby gradually resetting, thereby ensuring that the bearing to be inspected can be put in place. In addition, when clamping the bearing to be inspected at the baffle 25, since the baffle 25 has adjusted the bearing to be inspected to the correct position, and due to the existence of the flange, there is a certain distance between the baffle and the cylindrical portion of the bearing to be inspected, the bearing to be inspected at the baffle 25 can be directly clamped, and the baffle 25 will not block the pressure plate 432.

[0036] The detection mechanism 50 includes a vertical moving device 51, a mounting plate 52 arranged on the vertical moving device 51, a rotating motor 53 arranged on the mounting plate 52, a fixed cylinder 54 fixedly arranged on the mounting plate 52, a rotating cylinder 55 movably arranged on the fixed cylinder 54, a cross roller 56 arranged between the fixed cylinder 54 and the rotating cylinder 55, two oil seals 57 arranged on the rotating cylinder 55 and the mounting plate 52, a rotating gear 58 fixedly arranged on the rotating cylinder 55, two clamping blocks 59 fixedly arranged on the rotating cylinder 55, an electronic plug gauge 510 fixedly arranged on the clamping block 59, and a placement seat 511 located below the electronic plug gauge 510.

[0037] The vertical moving device 51 is used to drive the electronic plug gauge 59 to move vertically, so as to control the electronic plug gauge 59 to be inserted into the bearing to be inspected located on the placement seat 510 for inspection.

[0038] The mounting plate 52 is provided with a first mounting hole 521 , a second mounting hole 522 adjacent to the first mounting hole 521 , a first circular ring 523 arranged at one end of the second mounting hole 522 , and a second circular ring 524 arranged on the end surface of the mounting plate 52 facing the placement seat 511 .

[0039] The first mounting hole 521 is used to pass the output shaft of the rotary motor 53 , and the second mounting hole 522 is used to pass the electronic feeler gauge 510 .

[0040] The first circular ring 523 extends from the second mounting hole 522 toward one end of the placement seat 511, and the other end of the first circular ring 523 is used to fix the fixing cylinder 54. The extension of the first circular ring 523 can provide enough distance to penetrate the fastener to fix the fixing cylinder 54. At the same time, since the fixing cylinder 54 is arranged at the other end of the first circular ring 523, the distance between the fixing cylinder 54 and the mounting plate 52 is also extended, so that there is enough space to arrange the rotating gear 58. The first circular ring 523 and the second circular ring 524 are arranged at intervals, and the second circular ring 524 is arranged coaxially with the first circular ring 523 and the diameter of the second circular ring 524 is greater than the diameter of the first circular ring 523.

[0041] The second ring 524 is provided with an avoidance hole 525, which intersects with the first mounting hole 521, and a portion of the rotating gear 58 is located in the avoidance hole 525, so that the rotating gear 58 can mesh with the output shaft of the rotating motor 53. When the output shaft of the rotating motor 53 rotates, the rotating gear 58 is driven to rotate.

[0042] The fixed cylinder 54 is fixedly arranged on the axial end surface of the first circular ring 523 by means of fasteners such as screws, and the rotating cylinder 55 is rotatably sleeved on the outer side wall of the fixed cylinder 54. A V-shaped mounting groove is respectively arranged on the side walls of the fixed cylinder 54 and the rotating cylinder 55 that are in contact with each other. A cross roller 56 is arranged between the two V-shaped mounting grooves. The cross roller 56 not only separates the fixed cylinder 54 and the rotating cylinder 55, but also supports the rotating cylinder 55 by the cross roller 56, and the rotating cylinder 55 can rotate when driven by the rotating motor 53. Therefore, the cross roller 56 plays a supporting role and also plays a role in facilitating the rotation of the rotating cylinder 55. The cross roller bearing is a special type of bearing with a divided inner ring and a rotating outer ring. The internal structure of the cross roller bearing adopts rollers arranged perpendicularly and crosswise at 90 degrees to each other. Spacers or isolation blocks are installed between the rollers to prevent the rollers from tilting or the rollers from rubbing against each other, effectively preventing the increase of the rotation torque. Because the rollers are arranged perpendicular to each other on a 90° V-shaped mounting groove through a spacer, this design enables the cross roller bearing to withstand larger radial loads, axial loads, moment loads and other loads in all directions. The cross roller 56 should be prior art.

[0043] One of the oil seals 57 is located between the rotating cylinder 55 and the second circular ring 524, and is used to seal the outer wall portion of the rotating cylinder 55. Another oil seal 57 is located between the rotating cylinder 55 and the fixed cylinder 54, and is used to seal the inner wall portion of the rotating cylinder 55. The rotating gear 58 is located between the rotating cylinder 55 and the mounting plate 52, and is connected to the rotating cylinder 55 by fasteners. A portion of the rotating gear 58 passes through the avoidance hole 525 and meshes with the output shaft of the rotating motor 53, so that the rotating gear 58 is driven to rotate by the rotating motor 53. Since the rotating gear 58 is fixedly connected to the rotating cylinder 55, the rotating cylinder 55 is driven to rotate. The rotating gear 58 can be a helical gear, and the output end of the rotating motor 53 is also provided with helical teeth meshing with the helical gear.

[0044] The two clamping blocks 59 are provided with arc grooves on the sides facing each other, which are used to clamp the electronic plug gauge 510. The clamping blocks 59 are fixedly connected to the rotating cylinder 55, so that they rotate with the rotating cylinder 55, thereby driving the electronic plug gauge 510 to rotate. The electronic plug gauge 510 itself is a prior art, which is measured by an electronic sensor and is mainly used to measure the accuracy of hole size. When measuring, it contacts the inner wall of the measured hole. The sensor senses the force of contact with the measured hole wall and converts this force into a corresponding electrical signal. After being processed by the control circuit, this electrical signal is converted into a measurement result.

[0045] The placement seat 511 is coaxially arranged with the electronic plug gauge 510 and is used to place the bearing to be tested. During the test, the clamping mechanism 40 first places the bearing to be tested on the placement seat 511, and the vertical moving device 51 drives the electronic plug gauge 510 to descend, so that the electronic plug gauge 510 enters the bearing to be tested. At this time, the rotating motor 53 drives the electronic plug gauge 510 to rotate 120 degrees for 3 times, and records the measurement results each time. The measurement results will be recorded by a computer and calculated to draw a conclusion on whether the bearing to be tested is qualified.

[0046] The unloading conveying mechanism 60 includes a third conveying belt 61 disposed on the machine platform 10 , and a fourth conveying belt 62 disposed on the machine platform 10 .

[0047] The third conveyor belt 61 is used to convey bearings that meet the standards, and the fourth conveyor belt 62 is used to convey unqualified bearings. After the test is completed, the clamping mechanism 40 will clamp the bearings after the test again and place the bearings on the corresponding conveyor belts according to the test results under the drive of the mechanical arm 30.

[0048] Compared with the prior art, the automatic inner diameter detection device of the precision bearing provided by the present invention realizes the automatic descent and automatic rotation of the electronic plug gauge 510 through the detection mechanism 50, thereby laying a solid foundation for realizing automatic detection. Specifically, the mounting plate 52 is provided with a first mounting hole 521, a second mounting hole 522, a first circular ring 523, and a second circular ring 524. At the same time, the fixed cylinder 54 is arranged on the axial end face of the first circular ring 523, and the rotating cylinder 55 is rotatably sleeved on the outer side wall of the fixed cylinder 54. The side walls of the fixed cylinder 54 and the rotating cylinder 55 that are in contact with each other are provided with cross rollers 56 to support the rotation of the rotating cylinder 55. The second circular ring 524 is provided with an avoidance hole 525 that communicates with the first mounting hole 521. Part of the rotating gear 58 is located in the avoidance hole 525, and the rotating gear 58 is connected to one end of the rotating cylinder 55 facing the mounting plate 52. The rotating gear 58 passes through the avoidance hole 525 and meshes with the output shaft of the rotating motor 53, so that the rotating gear 58 is driven to rotate by the rotating motor 53. The rotating gear 58 is connected to the rotating cylinder 55, and then drives the rotating cylinder 55 to rotate. The rotating cylinder 55 holds the electronic plug gauge 510 through the two holding blocks 59, so that it rotates with the rotating cylinder 55, realizing the automatic rotation of the electronic plug gauge 510, so that the electronic plug gauge can be accurately rotated through mechanical control, without problems such as skewness or uneven force, avoiding the problems of inaccurate detection data and low detection efficiency caused by the current manual use of detection tools, and realizing automatic detection.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. An automatic detection device for the inner diameter of a precision bearing, characterized in that: The automatic detection device for the inner diameter of the precision bearing includes a machine platform, a mechanical arm arranged on the machine platform, a clamping mechanism arranged on the mechanical arm, and a detection mechanism arranged on the machine platform, the clamping mechanism includes a clamping mounting plate arranged on the mechanical arm, a clamping cylinder arranged on the clamping mounting plate, and a pressing assembly arranged on the clamping mounting plate, the pressing assembly includes four plugging screws arranged on the clamping mounting plate, a pressure plate arranged on the plugging screws, and four springs respectively sleeved on the plugging screws, one end of the plugging screw is movably passed through the clamping mounting plate and is provided with a nut portion, and the other end is connected to the pressure plate The diameter of the nut portion is larger than the diameter of the plug screw, the pressure plate is a square frame structure, one end of the spring abuts against the pressure plate, and the other end abuts against the clamping mounting plate, and the detection mechanism includes a vertical moving device, a mounting plate arranged on the vertical moving device, a rotating motor arranged on the mounting plate, a fixed cylinder fixedly arranged on the mounting plate, a rotating cylinder movably arranged on the fixed cylinder, a cross roller arranged between the fixed cylinder and the rotating cylinder, a rotating gear fixedly arranged on the rotating cylinder, two clamping blocks fixedly arranged on the rotating cylinder, an electronic plug gauge fixedly arranged on the clamping block, and a The placement seat below the electronic plug gauge, the mounting plate is provided with a first mounting hole, a second mounting hole located on one side of the first mounting hole, a first circular ring arranged at one end of the second mounting hole, and a second circular ring arranged on the end surface of the mounting plate facing the placement seat, the first circular ring extends from the second mounting hole toward one end of the placement seat, the other end of the first circular ring is fixedly provided with the fixing cylinder, the first circular ring and the second circular ring are annular in structure, the second circular ring is coaxially arranged with the first circular ring and the diameter of the second circular ring is larger than the diameter of the first circular ring, and the second circular ring located between the first circular ring and the first mounting hole is provided with an avoidance hole, The output shaft of the rotating motor is arranged in the first mounting hole, the fixed cylinder is arranged on the axial end face of the first ring, the rotating cylinder is rotatably sleeved on the outer side wall of the fixed cylinder, and a V-shaped mounting groove is respectively arranged on the side walls of the fixed cylinder and the rotating cylinder that are in contact with each other, and a cross roller is arranged between the two V-shaped mounting grooves. The rotating gear is fixedly connected to one end of the rotating cylinder facing the mounting plate, and the rotating gear is located between the rotating cylinder and the mounting plate. The rotating gear passes through the avoidance hole and meshes with the output shaft of the rotating motor. The two clamping blocks fix the electronic plug gauge, and the clamping block is fixedly connected to the rotating cylinder, and the clamping block will rotate with the rotating cylinder.

2. The automatic inner diameter detection device of a precision bearing according to claim 1, characterized in that: The automatic detection device for the inner diameter of the precision bearing also includes a loading and conveying mechanism arranged on the machine platform, and a unloading and conveying mechanism arranged on the machine platform.

3. The automatic inner diameter detection device of a precision bearing according to claim 2, characterized in that: The loading conveying mechanism includes a first conveyor belt arranged on the machine platform, a second conveyor belt arranged on the machine platform, a stopper arranged on the second conveyor belt, a material blocking cylinder arranged on the second conveyor belt, and a baffle arranged on the second conveyor belt. Limiting plates are arranged on three sides of the first conveyor belt away from the second conveyor belt.

4. The automatic inner diameter detection device of a precision bearing according to claim 3, characterized in that: The stopper is vertically arranged on the side wall of the second conveyor belt away from the first conveyor belt, and the stopper is arranged on the frame of the second conveyor belt. The second conveyor belt is located in the output direction of the first conveyor belt. The width of the second conveyor belt is smaller than the width of the first conveyor belt, and the width of the second conveyor belt can accommodate a bearing to be inspected to pass through.

5. The automatic inner diameter detection device of a precision bearing according to claim 3, characterized in that: The material blocking cylinder is arranged above the second conveyor belt, and the output direction of the material blocking cylinder is toward the second conveyor belt. The baffle is arranged at one end of the second conveyor belt and is located in the conveying direction of the second conveyor belt. The baffle is provided with a V-shaped groove.

6. The automatic inner diameter detection device of a precision bearing according to claim 1, characterized in that: One end of the clamping mounting plate is connected to the mechanical arm, and the other end is provided with a U-shaped notch. Two output ends of the clamping cylinder are respectively provided with clamping blocks, and the clamping blocks are located between the pressing assembly and the clamping mounting plate.

7. The automatic inner diameter detection device of a precision bearing according to claim 2, characterized in that: The unloading conveying mechanism includes a third conveyor belt arranged on the machine platform, and a fourth conveyor belt arranged on the machine platform. The third conveyor belt is used to convey bearings that meet the standards, and the fourth conveyor belt is used to convey unqualified bearings.

8. The automatic inner diameter detection device of a precision bearing according to claim 1, characterized in that: The detection mechanism further includes two oil seals arranged on the rotating cylinder and the mounting plate, one of the oil seals is located between the rotating cylinder and the second ring, and the other oil seal is located between the rotating cylinder and the fixed cylinder.

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