CN-122015679-A - Efficient gear clearance detection equipment and method thereof

CN122015679ACN 122015679 ACN122015679 ACN 122015679ACN-122015679-A

Abstract

The invention relates to the field of detection machinery and discloses high-efficiency detection equipment and a method thereof for gear clearances. The first detection mechanism is meshed with the gear to be detected for rotation through the standard gear, a backlash image is formed through light source projection, rapid judgment of backlash and immediate physical marking of unqualified teeth are achieved through the combination of the auxiliary marking module or the image recognition unit, and the second detection mechanism is used for performing through-stop detection of axial backlash through the detection head capable of vertically moving. According to the invention, through the cooperation of the first detection mechanism and the second detection mechanism, the automation and high-efficiency comprehensive detection of the gear backlash and the axial clearance are realized by utilizing the cooperation of the optical projection, the mechanical trigger mark and the axial insertion detection, the detection precision, the consistency and the separation efficiency are obviously improved, and the problems of low efficiency and easy error in the traditional manual detection are solved.

Inventors

LI SHANSHAN
HU DONGLAI

Assignees

南通泽朗科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260129

Claims (8)

1. The high-efficiency gear clearance detection device comprises a detection table and a controller, wherein a track is arranged on the detection table, a limiting sliding table is arranged on the track through a ball screw pair, the ball screw pair is in transmission connection with a servo motor arranged on the detection table, the limiting sliding table can horizontally move to a set detection station along the track, a limiting tool is arranged on the limiting sliding table, and limiting work is used for bearing and limiting a gear to be detected, and the high-efficiency gear clearance detection device is characterized in that: A first detection mechanism is arranged on one side opposite to the limit sliding table and is used for detecting the gear clearance in the horizontal direction; The detection bench is also provided with a support frame, one end of the support frame corresponding to the limiting tool moving path is provided with a second detection mechanism, and the second detection mechanism is used for detecting the longitudinal gear gap.
2. The efficient gear clearance detection device according to claim 1, wherein the first detection mechanism comprises a bearing frame, the bearing frame is fixedly arranged on the detection table, a standard gear is rotationally connected to the middle of the bearing frame, the standard gear can be meshed with a gear to be detected, and a driving motor is arranged at the bottom of the bearing frame and used for driving the standard gear to rotate; the detection table is also provided with a projection plate, and the projection plate is positioned right below the engagement of the marking gear and the gear to be detected and is used for receiving light passing through the engagement tooth gap and forming a projection image.
3. The gear gap efficient detection device according to claim 2, wherein the second detection mechanism comprises an electric lifting column, the electric lifting column is fixedly arranged on the support frame, a movable seat is detachably fixed at the lifting end of the electric lifting column, a light source module is arranged at the bottom of the movable seat and is opposite to the projection plate, a supporting rod is arranged at one side of the movable seat, a limit groove is formed in the bottom end of the supporting rod, a detection head is slidably connected in the limit groove, a damping spring is arranged between the detection head and the top wall of the limit groove, the detection head is used for executing vertical plugging action to detect gaps of a gear shaft hole, and a force sensor is arranged at the end part of the damping spring and used for detecting pressure change in the vertical plugging action process.
4. The gear clearance high-efficiency detecting device according to claim 3, wherein the second detecting mechanism further comprises an auxiliary marking module for physically marking the present backlash when the present backlash is detected to be unqualified, and the light source module is an infrared heating light source.
5. The gear lash high efficiency inspection device of claim 4, wherein the auxiliary marking module comprises a preset template, an actuation spring, and an impact marking head; The preset template is arranged between the limiting sliding table and the projection plate, is fixed in a groove formed in the detection table through the electric telescopic bracket, and can be moved in and out of the corresponding gear backlash position according to the requirement so as to avoid affecting the normal use of the projection plate; the preset template is provided with a standard light transmission groove with a shape and a position which are completely corresponding to the projection of the qualified tooth gaps, and a heat conduction enclosing block is fixedly arranged at the position of the preset template opposite to the edge of the standard light transmission groove, and the heat conduction enclosing block is in abutting connection with an actuating spring; the actuating spring is in a first length at normal temperature, and when the actuating spring is heated to a set phase-change temperature after heat conduction of the heat conduction enclosure, the actuating spring is contracted in length and is converted into a second length; The impact marking head is connected with the movable end of the actuating spring through a rigid connecting rod, and the middle part of the rigid connecting rod is hinged to the top of the preset template through a connecting piece.
6. The efficient gear clearance detection device according to claim 5 is characterized in that when the gear backlash is qualified, light and heat pass through a standard light transmission groove, when the gear backlash is too large and unqualified, a heat conduction fence is positioned in a light and heat irradiation range, the heat conduction fence is heated and then contracts an actuating spring, an impact marking head is driven to move upwards through a rigid connecting rod to impact at a corresponding position of a gear rim to form a physical color mark, and after the gear continues to rotate, the actuating spring is cooled and reset along with the stop of irradiation.
7. The gear clearance high-efficiency detection device according to claim 3 or 5, wherein the second detection mechanism further comprises an image recognition unit, the image recognition unit comprises a vision sensor and an image processor, the vision sensor is arranged above or beside the projection plate and is used for collecting a gear clearance projection image on the projection plate, the image processor is electrically connected with the vision sensor and is used for calculating a projection area corresponding to each gear clearance, comparing the projection area with a preset qualified threshold range, and marking and feeding back an abnormal gear clearance exceeding the qualified threshold range to the controller.
8. A detection method based on the implementation of the gear clearance high-efficiency detection device according to any one of claims 1 to 7, characterized in that the detection method comprises the following steps: s1, clamping a gear to be detected on a limit tooling, and controlling a servo motor to drive a limit sliding table to horizontally move along a track until the gear to be detected reaches a set detection station; S2, starting a driving motor of the first detection mechanism to drive the standard gear to be meshed with the gear to be detected and rotate at least one circle at a constant speed; S3, judging and marking the qualification of the tooth gaps, and selecting to enter S3a or S3b according to the preset: s3a, judging and marking by an auxiliary marking module, wherein when any tooth gap is too large, light and heat are blocked by a preset template and heat an actuating spring to trigger an impact marking head to form a physical mark at a position corresponding to a gear to be detected; s3b, judging through an image recognition unit, namely acquiring a projection image by a vision sensor, calculating the projection area of each tooth gap by an image processor, comparing the projection area with a preset threshold range, and recognizing abnormal tooth gaps; If the physical mark or the image analysis result is triggered to be unqualified in the step S3, judging that the gear is unqualified, otherwise, entering the step S4; S4, starting a second detection mechanism, controlling the electric lifting column to descend so that the detection head executes vertical plugging action, and simultaneously monitoring pressure through the force sensor to judge whether the axial gap is qualified or not; And S5, conveying the gear to a corresponding qualified product area or unqualified product area according to the judging result of the step S4.

Description

Efficient gear clearance detection equipment and method thereof Technical Field The invention relates to the field of detection machinery, in particular to efficient gear clearance detection equipment and a method thereof. Background Gears are used as a core base member for power transmission, and the meshing clearance is a key parameter affecting transmission precision, stability and service life. Accurate detection of backlash, namely the clearance between teeth and axial clearance is an important link of gear delivery quality control. Currently, common detection methods for gear backlash mainly rely on manual operation. For the backlash detection, a manual measuring mode of a feeler gauge or a dial gauge reading mode is adopted, the methods are low in efficiency and high in labor intensity, the detection result is obviously influenced by experience and a manipulation of an operator, the repeatability is poor, and accurate judgment of quantification and consistency is difficult to realize. For the axial clearance, the hand feeling or the simple go-no-go gauge is adopted for judgment, and the problems of strong subjectivity and insufficient precision are also caused. Some existing automatic detection devices, such as various sensors, can only detect single parameters, or have complex structures and high cost, and generally lack in-situ and instant identification capability on unqualified products, so that manual intervention is still required for subsequent sorting, and urgent requirements of modern production lines on high-efficiency, high-precision and full-automatic detection and diversion are difficult to meet. Disclosure of Invention The invention aims to provide efficient gear clearance detection equipment and a method thereof, which solve the technical problems. The aim of the invention can be achieved by the following technical scheme: The high-efficiency gear clearance detection equipment comprises a detection table and a controller, wherein the detection table is provided with a track, a limit sliding table is arranged on the track through a ball screw pair, the ball screw pair is in transmission connection with a servo motor arranged on the detection table, the limit sliding table can horizontally move to a set detection station along the track, a limit tool is arranged on the limit sliding table, the limit tool is used for bearing and limiting a gear to be detected, A first detection mechanism is arranged on one side opposite to the limit sliding table and is used for detecting the gear clearance in the horizontal direction; The detection bench is also provided with a support frame, one end of the support frame corresponding to the limiting tool moving path is provided with a second detection mechanism, and the second detection mechanism is used for detecting the longitudinal gear gap. Further, the first detection mechanism comprises a bearing frame, the bearing frame is fixedly arranged on the detection table, the middle part of the bearing frame is rotationally connected with a standard gear, the standard gear can be meshed with a gear to be tested, and a driving motor is arranged at the bottom of the bearing frame and used for driving the standard gear to rotate; the detection table is also provided with a projection plate, and the projection plate is positioned right below the engagement of the marking gear and the gear to be detected and is used for receiving light passing through the engagement tooth gap and forming a projection image. Further, the second detection mechanism comprises an electric lifting column, the electric lifting column is fixedly arranged on the supporting frame, a movable seat is detachably fixed at the lifting end of the electric lifting column, a light source module is arranged at the bottom of the movable seat, the light source module is opposite to the projection plate, a supporting rod is arranged on one side of the movable seat, a limit groove is formed in the bottom end of the supporting rod, a detection head is connected in the limit groove in a sliding mode, a damping spring is arranged between the detection head and the top wall of the limit groove, the detection head is used for executing a vertical plugging action to detect a gap of a gear shaft hole, and a force sensor is arranged at the end part of the damping spring and used for detecting pressure change in the vertical plugging action process. Further, the second detection mechanism further comprises an auxiliary marking module, wherein the auxiliary marking module is used for physically marking the tooth gap when the defect of the current tooth gap is detected, and the light source module is an infrared heating light source. The auxiliary marking module comprises a preset template, an actuating spring and an impact marking head; The preset template is arranged between the limiting sliding table and the projection plate, is fixed in a groove formed in the detection table through the electric telescopi