Gear flatness intelligent detection device

Abstract

The utility model discloses a gear flatness intelligent detection device, including positioning drive mechanism and detection mechanism. Positioning drive mechanism is equipped with the positioning mounting bracket, and the first positioning head with elastic floating conical portion is assembled on it, and the second positioning head is driven to go up and down by the first linear drive unit, and the two cooperation realizes the adaptive clamping and positioning of gear, and the detection mechanism includes the detection module driven by the second linear drive unit, and multiple detection wires with both ends tension are arranged horizontally on it, and the detection wire is connected with the tension sensor. The utility model discloses through floating conical surface positioning to ensure the clamping stability, utilizes the dynamic contact of rotary gear and detection wire array, and the multi -dimensional appearance of tooth top surface is converted into the tension signal simultaneously, realizes the efficient, comprehensive detection of tooth top surface local defect and axial unevenness under single clamping.

Description

Technical Field

[0001] This utility model belongs to the field of gear surface inspection technology, specifically relating to an intelligent gear flatness inspection device. Background Technology

[0002] As a key basic component in mechanical transmission systems, the flatness of the tooth tip surface of gears is an important indicator affecting gear meshing accuracy, transmission smoothness, and service life. Defects such as local depressions, protrusions, burrs, or twisting and taper along the tooth width direction on the tooth tip surface can all lead to abnormal vibration, increased noise, and accelerated wear.

[0003] Currently, common technical methods for inspecting the flatness of gear tooth top surfaces have the following limitations: Although contact measurement methods such as coordinate measuring machines (CMMs) have high accuracy, they are slow and expensive, making it difficult to meet the needs of online or batch inspection on production lines; non-contact optical methods such as laser scanning are easily affected by on-site conditions such as oil stains and reflections on the workpiece surface, posing challenges to stability and reliability; and scanning methods using single-point or single-line probes usually require multiple positioning and repeated scanning to cover the entire tooth width and circumference, resulting in low inspection efficiency and difficulty in simultaneously acquiring comprehensive morphological information of the tooth top surface in the axial and circumferential directions in a single clamping, making it impossible to efficiently diagnose distributed defects such as axial torsion.

[0004] Therefore, the industry urgently needs a testing technology and device that can balance high efficiency, high precision, and strong anti-interference capabilities, and can achieve a rapid and comprehensive one-time evaluation of the multi-dimensional flatness of gear tooth top surfaces. Utility Model Content

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0006] A gear flatness intelligent detection device includes a positioning drive mechanism and a detection mechanism.

[0007] The positioning drive mechanism includes a positioning mounting frame, on which a first positioning seat and a rotation drive unit are fixedly mounted, and a second positioning seat is mounted via the first linear drive unit. A first positioning head and a second positioning head are rotatably mounted on the first positioning seat and the second positioning seat, respectively. The first positioning head cooperates with the second positioning head to perform axial positioning of the gear. The second positioning seat is equipped with a rotation drive unit for driving the second positioning head to rotate.

[0008] The detection mechanism includes a detection module and a second linear drive unit. The detection module includes a detection mounting frame with multiple detection wires extending in parallel along a direction perpendicular to the gear axis. Support arms are located on both sides of the mounting frame, and both ends of each detection wire are tensioned on these arms. At least one end of each detection wire is connected to a tension sensor. The second linear drive unit drives the detection module to move so that each detection wire contacts the top surface of the gear teeth. The tension sensor collects data on the tension changes of each detection wire as the gear rotates.

[0009] Furthermore, the first positioning head includes a conical portion and a positioning ring arranged coaxially. The conical portion is used to extend into the inner hole of the gear to achieve radial positioning. The upper surface of the positioning ring forms a first positioning surface for supporting the lower end face of the gear. The lower surface of the second positioning head forms a second positioning surface for pressing the upper end face of the gear.

[0010] Furthermore, a floating mechanism is provided between the conical portion and the positioning ring; the floating mechanism includes a guide rod provided on the positioning ring and a sliding hole provided on the conical portion for the guide rod to pass through, and a spring is sleeved on the guide rod, so that the conical portion can float elastically relative to the positioning ring.

[0011] Furthermore, the detection mounting frame has tensioning structures on both sides for mounting the detection wire. The tensioning structure includes a rotating wheel on the detection mounting frame, and the detection wire passes around the rotating wheel to achieve tension.

[0012] Compared with the prior art, this application has the following beneficial technical effects:

[0013] 1. High detection accuracy and comprehensive information: By forming dynamic line contact between multiple horizontally arranged detection wire arrays and the top surface of the rotating gear teeth, the entire tooth width and full circumference can be scanned in one clamping. Compared with traditional point-by-point or single-line detection methods, the detection efficiency is greatly improved, and it is suitable for online or batch detection scenarios.

[0014] 2. Strong adaptability and good versatility: The first positioning head adopts a design combining a conical part and an elastic floating mechanism. The conical part can achieve rapid radial self-centering of gears with different inner diameters, while the spring floating mechanism can automatically compensate for the thickness tolerance of the gears, ensuring that the upper surface of the positioning ring (the first positioning surface) always stably supports the gears. This design allows the device to adapt to various specifications of gears within a certain size range without the need for frequent fixture changes. Attached Figure Description

[0015] Figure 1 Three-dimensional intelligent detection device for gear flatness Figure 1 .

[0016] Figure 2 forFigure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 Three-dimensional intelligent detection device for gear flatness Figure 2 .

[0018] Figure 4 for Figure 3 A magnified view of a section at point B.

[0019] Figure 5 This is a front view of the intelligent gear flatness detection device.

[0020] The following is an explanation of the reference numerals on the accompanying drawings:

[0021] 100. Positioning mounting bracket; 110. First positioning seat; 111. First positioning head; 112. Conical part; 113. Positioning ring; 114. Guide rod; 115. Spring; 120. First linear drive unit; 130. Second positioning seat; 131. Second positioning head; 140. Rotation drive unit;

[0022] 200. Second linear drive unit; 210. Detection mounting bracket; 211. Support arm; 212. Rotary wheel; 220. Detection wire; 230. Tension sensor;

[0023] 300. Gear. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] In the following embodiments, the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] ReferenceFigures 1 to 5 A gear flatness intelligent detection device is proposed, which can achieve efficient and precise measurement of the flatness of the tooth tip surface of a 300-tooth gear. The device mainly consists of two parts: a positioning drive mechanism and a detection mechanism.

[0028] The positioning drive mechanism is provided with a positioning mounting bracket 100 as a bearing base. A first positioning seat 110 is assembled at the lower part of the positioning mounting bracket 100, and a first positioning head 111 is mounted on the first positioning seat 110. The first positioning head 111 is composed of a conical part 112 and a positioning ring 113 arranged coaxially. The conical part 112 is used to extend into the inner hole of the gear 300 to achieve automatic radial alignment, and the upper surface of the positioning ring 113 forms a first positioning surface that supports the lower end face of the gear 300. In particular, the conical part 112 and the positioning ring 113 are elastically floatingly connected by a guide rod 114, a sliding hole and a spring 115, so that the conical part 112 can float axially to adaptively compensate for the thickness tolerance of different gears 300. On the upper part of the positioning mounting bracket 100, a second positioning seat 130 is slidably mounted via a first linear drive unit 120 (such as a cylinder or linear module). A second positioning head 131 is rotatably mounted on the second positioning seat 130, and its lower surface forms a second positioning surface for pressing the upper end face of the gear 300. In addition, a rotation drive unit 140 (such as a servo motor) is mounted on the second positioning seat 130. The rotation drive unit 140 is connected to the second positioning head 131 via a belt drive module to drive the first positioning head 111 to rotate.

[0029] The detection mechanism includes a detection module driven by a second linear drive unit 200 (such as a linear module). The detection module includes a detection mounting frame 210 with support arms 211 on both sides. Multiple high-strength detection wires 220 extend horizontally and are arranged in parallel, with their ends tensioned on the support arms 211 on both sides. At least one end of each detection wire 220 is connected to a high-precision tension sensor 230. In a preferred embodiment, a rotating wheel 212 is provided on the support arm 211, and the detection wires 220 pass around the rotating wheel 212 to achieve flexible guidance and precise tension.

[0030] The working process of the device is as follows: First, the gear 300 to be tested is placed on the first positioning head 111 to complete radial centering and positioning of the lower end face. Then, the first linear drive unit 120 drives the second positioning head 131 to descend, pressing against the upper end face of the gear 300, and together with the first positioning head 111, completes the axial clamping and positioning of the gear 300. Next, the second linear drive unit 200 drives the detection module forward, causing all detection wires 220 to contact the tooth tip surface of the gear 300 and reach the preset tension. Then, the rotation drive unit 140 drives the first positioning head 111 to rotate the gear 300 at a uniform speed. During rotation, the microscopic undulations of the tooth tip surface cause dynamic tension changes in the detection wires 220 in contact with it. Each tension sensor 230 synchronously and continuously collects these signals and uploads them to the control system. The control system analyzes the data, identifies local defects by recognizing abnormal fluctuations in single-path signals, and diagnoses the axial unevenness of the tooth tip surface by comparing the signal differences of multiple detection wires 220 at the same time. After the inspection is completed, all mechanisms are reset, and gear 300 can be removed.

[0031] In summary, this embodiment ensures the adaptability and stability of the clamping by using a floating conical surface positioning and a bidirectional clamping mechanism. By utilizing a horizontally arranged array of detection wires 220, the multidimensional geometric information of the rotating tooth tip surface is synchronously converted into a quantifiable tension signal, thereby achieving efficient, comprehensive, and accurate detection of the flatness of the gear 300 tooth tip.

[0032] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A gear flatness intelligent detection device, characterized in that, This includes positioning drive mechanisms and detection mechanisms; The positioning drive mechanism includes a positioning mounting bracket (100), on which a first positioning seat (110) is fixedly mounted, and a second positioning seat (130) is mounted via a first linear drive unit (120). A first positioning head (111) and a second positioning head (131) are rotatably mounted on the first positioning seat (110) and the second positioning seat (130), respectively. The first positioning head (111) cooperates with the second positioning head (131) to axially position the gear (300). A rotation drive unit (140) for driving the second positioning head (131) to rotate is mounted on the second positioning seat (130). The detection mechanism includes a detection module and a second linear drive unit (200). The detection module includes a detection mounting frame (210). Multiple detection wires (220) extending in parallel along a direction perpendicular to the axis of the gear (300) are arranged on the detection mounting frame (210). Support arms (211) are provided on both sides of the detection mounting frame (210). The two ends of each detection wire (220) are respectively tensioned on the support arms (211) on both sides, and at least one end of each detection wire (220) is connected to a tension sensor (230). The second linear drive unit (200) is used to drive the detection module to move so that each detection wire (220) contacts the tooth top surface of the gear (300). The tension sensor (230) is used to collect the tension change data of each detection wire (220) when the gear (300) rotates.

2. The intelligent gear flatness detection device according to claim 1, characterized in that, The first positioning head (111) includes a conical portion (112) and a positioning ring (113) arranged coaxially. The conical portion (112) is used to extend into the inner hole of the gear (300) to achieve radial positioning. The upper surface of the positioning ring (113) forms a first positioning surface for supporting the lower end face of the gear (300). The lower surface of the second positioning head (131) forms a second positioning surface for pressing the upper end face of the gear (300).

3. The intelligent gear flatness detection device according to claim 2, characterized in that, A floating mechanism is provided between the conical portion (112) and the positioning ring (113); the floating mechanism includes a guide rod (114) provided on the positioning ring (113) and a sliding hole provided on the conical portion (112) for the guide rod (114) to pass through. A spring (115) is sleeved on the guide rod (114), and the conical portion (112) can float elastically relative to the positioning ring (113).

4. The intelligent gear flatness detection device according to claim 1, characterized in that, The detection mounting frame (210) has tensioning structures on both sides for mounting the detection wire (220). The tensioning structure includes a rotating wheel (212) on the detection mounting frame (210), and the detection wire (220) passes around the rotating wheel (212) to achieve tension.

Images