CN109647729B - Worm wheel detection screening device - Google Patents

Abstract

The invention discloses a worm gear detection and screening device, which is used for size detection, fitting analysis and automatic screening of worm gears. , The base of the detection device, the rack device is respectively equipped with a feeding and discharging device, a clamping and rotating device, and a detection device. The clamping and rotating device is used for the clamping of the worm gear to be detected and the positioning of the detection position of the worm gear. The detection device is used for the detection of various size parameters of the worm gear. The invention can realize intelligent and automatic screening of worm gear products, greatly improve production efficiency, reduce labor intensity of workers, effectively avoid the problems of false detection and missed detection in manual screening, and ensure the accuracy and reliability of detection and screening results.

Description

A worm gear detection and screening device

technical field

The invention relates to the field of machinery and automatic detection, in particular to a worm gear detection and screening device.

Background technique

Most parts of the mechanical system have certain requirements of dimensional accuracy, shape accuracy and positional accuracy to meet the needs of mechanical system movement or coordination between parts, but due to the limitations of production equipment and operation methods, the processed parts are different from the ideal. There are certain manufacturing deviations in the parts, these deviations must be limited to a certain range, and they need to be detected and screened.

The worm gear is a part with medium machining accuracy. It can realize the transmission between two vertical shafts by meshing with the worm, and is mainly used in places with large transmission ratios. However, some worm gear products cannot meet the design and machining accuracy, resulting in increased wear of the worm gear and worm, and it needs to be tested and screened to meet the use requirements.

The traditional detection method is to use mechanical tools for detection and screening manually, but this method has low production efficiency, high labor intensity and cannot guarantee the accuracy and reliability of the detection results.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a worm gear detection and screening device, which realizes intelligent and automatic screening of worm gear products, reduces the input of human resources, and avoids false detection and missed detection in manual screening.

In order to solve the above-mentioned technical problems, a technical solution adopted in the present invention is to provide a worm gear detection and screening device, which is used for size detection, fitting analysis and automatic screening of worm gears, including a rack device and a feeding and unloading device;

The rack device includes a complete machine base, a complete machine frame fixed on the top of the complete machine base, and a detection device base fixed in the upper middle of the complete machine base. Rotation device, detection device;

The clamping and rotating device is fixed on the side surface of the base of the detection device and the middle of the top surface of the base of the whole machine, and is used for clamping the worm gear to be detected and positioning the detection position of the worm gear;

The feeding and discharging device is fixed on the top surface of the base of the whole machine and on the lateral sides of the clamping and rotating device, and is used for feeding the worm gears to be detected one by one and sending out the detected worm gears one by one;

The detection device is located in the middle of the detection device base and fixed on the top surface of the base of the whole machine, and cooperates with the clamping and rotating device to realize the detection of various size parameters of the worm gear;

The detection device includes an inner hole detection mechanism, a thickness detection mechanism, and a tooth profile detection mechanism;

The inner hole detection mechanism is located on the longitudinal side of the clamping and rotating device, and includes a third linear module fixed on the top surface of the base of the whole machine, a probe bracket driven by the third linear module, and the end of the probe bracket is embedded with Inner hole detection sensor;

The thickness detection mechanism is located on both longitudinal sides of the clamping and rotating device, and includes a first installation frame and a second installation frame fixed on the top surface of the base of the whole machine. A first thickness detection sensor is installed on the top of the first installation frame, and a second installation frame is installed A second thickness detection sensor is installed on the top of the frame;

The tooth profile detection mechanism is located on the lateral sides of the clamping and rotating device, and includes a fourth linear module fixed on the top surface of the base of the whole machine, a fifth linear module, a first mounting plate driven by the fourth linear module, A second mounting plate driven by the fifth linear module, a first tooth profile detection sensor is installed on the top of the first mounting plate near the clamping and rotating device, and a first tooth profile detection sensor is installed on the top of the second mounting plate near the clamping and rotating device. a second tooth profile detection sensor;

The loading and unloading device is located on the longitudinal side of the base of the whole machine and on the lateral two sides of the base of the detection device, and is used for feeding the worm gear to be detected and unloading the worm gear after the detection.

Further, the loading and unloading device includes a loading tray stacker, a blanking tray stacker, a loading manipulator, a blanking manipulator, and a picking manipulator;

The feeding tray stacker is provided with a plurality of stacked feeding trays, and above the feeding tray stacker is a feeding manipulator guide rail fixed on the top of the whole machine frame and arranged in the longitudinal direction. The feeding manipulator is installed at the bottom of the feeding manipulator guide rail;

The blanking tray stacker is provided with a plurality of stacked blanking trays, and above the blanking tray stacker is a blanking manipulator guide rail fixed on the top of the whole machine frame and arranged in the longitudinal direction. The feeding manipulator is installed at the bottom of the unloading manipulator guide rail;

The picking manipulator is fixed on the top surface of the base of the whole machine, on one side of the discharging section of the feeding and discharging device, and one side of the picking manipulator is provided with a picking tray located in the middle of the base of the detection device.

Further, the feeding and discharging device includes a feeding component and a discharging component;

The feeding assembly includes a stepping feeding mechanism fixed on the top surface of the base of the whole machine, and feeding guide rails fixed on the longitudinal edges of the top of the stepping feeding mechanism;

The discharging assembly includes a stepping discharging mechanism fixed on the top surface of the base of the whole machine, and discharging guide rails fixed on the longitudinal edges of the top of the stepping discharging mechanism.

Further, the projections of the feeding guide rail and the discharging guide rail in the transmission direction of the feeding and discharging device overlap, and a soft support layer is provided on the inner wall of the feeding guide rail and the discharging guide rail.

Further, an infrared detection sensor and an infrared counting sensor are respectively provided on the outer wall of the discharging guide rail along the transmission direction of the feeding and discharging device.

Further, the clamping and rotating device includes a rotating assembly and a clamping assembly, and the rotating assembly is located directly above the clamping assembly;

The rotating assembly includes a first linear module vertically fixed on the top of the side surface of the base of the detection device, and a first installation body driven by the first linear module. The bottom of the first installation body is rotatably connected with a rotating roller, and the first installation body A rotary drive motor that drives the rotary roller to rotate is installed on the side of the device;

The clamping assembly includes a second linear module vertically fixed in the middle of the base of the detection device, a second installation body driven by the second linear module, and two clamping support wheels are rotatably connected to the top of the second installation body.

Further, positioning plates are fixedly connected to both sides of the top of the second mounting body.

Further, the projection of the axis of the rotating roller in the horizontal plane is located in the middle position of the projection of the axes of the two clamping support wheels in the horizontal plane.

Further, an annular positioning protrusion is provided at the center of the outer circular surface of the clamping support wheel, and the surface of the positioning protrusion matches the groove on the outer tooth surface of the worm wheel.

Further, the detection positions of the first tooth profile detection sensor and the second tooth profile detection sensor are located in the same horizontal plane as the axis of the clamped worm wheel, and are respectively located at different positions in the direction of the axis of the clamped worm wheel.

The beneficial effects of the present invention are as follows:

1. The worm gear detection and screening device provided by the present invention adopts a manipulator to automatically load and unload materials, which reduces the labor intensity of workers and improves production efficiency;

2. The worm gear detection and screening device provided by the present invention adopts infrared sensors to monitor the output of unqualified products, and automatically rejects unqualified products through an automatic manipulator, so as to realize strict separation of qualified products and unqualified products, and effectively avoid false detection during manual detection. Unqualified products caused by missed inspection are mixed with qualified products, which ensures the accuracy and reliability of detection and screening results;

3. The worm gear detection and screening device provided by the present invention adopts the stepping feeding mechanism to send the worm gears one by one from the feeding track to the clamping support wheel to realize automatic centering and positioning, and the detection rotating device presses the worm wheel on the clamping support wheel. It can realize the clamping of the worm gear, avoid the use of additional special fixtures, simplify the complexity of the detection device, and reduce the cost of equipment;

4. The worm gear detection and screening device provided by the present invention adopts the stepping feeding mechanism to send the worm gears to be detected into the detection station one by one, and the worm gear after the detection is sent to the next worm gear to be detected and pushes out the detection station, and enters the stepper In the discharge mechanism, there is no need to use an additional transfer device to realize the position switching of the worm gear between different stations, which improves the equipment utilization rate and work efficiency;

5. The turbine detection and screening device provided by the present invention adopts multiple sensors to work simultaneously to collect data, which reduces the time of the detection link and greatly improves the detection efficiency and production efficiency.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

FIG. 2 is a schematic three-dimensional structure diagram of the rack device.

Fig. 3 is the three-dimensional structure schematic diagram of described loading and unloading device;

Fig. 4 is a three-dimensional schematic diagram of the feeding and discharging device;

Fig. 5 is the three-dimensional mechanism schematic diagram of described clamping and rotating device;

FIG. 6 is a three-dimensional schematic diagram of the detection device;

In the picture: 1 rack device, 11 whole machine frame, 12 detection device base, 13 whole machine base, 2 feeding and unloading device, 21 feeding tray stacker, 22 feeding tray, 23 feeding manipulator guide rail , 24 blanking tray stacker, 25 blanking tray, 26 blanking manipulator guide rail, 27 feeding manipulator, 28 blanking manipulator, 29 blanking manipulator, 210 blanking tray, 3 feeding and discharging device, 31 feeding Components, 310 stepping feeding mechanism, 311 feeding guide rail, 32 discharging assembly, 320 stepping feeding mechanism, 321 discharging guide rail, 4 clamping rotating device, 41 rotating assembly, 411 first linear module, 412 No. A mounting body, 413 rotary drive motor, 414 rotary roller, 421 second linear module, 422 positioning plate, 423 second mounting body, 424 clamping support wheel, 42 clamping assembly, 5 detection device, 51 inner hole detection mechanism , 511 third linear module, 512 inner hole detection sensor, 513 probe bracket, 52 thickness detection mechanism, 521 first mounting bracket, 522 second mounting bracket, 523 first thickness detection sensor, 524 second thickness detection sensor, 53 Tooth profile detection mechanism, 531 fourth linear module, 532 fifth linear module, 533 second tooth profile detection sensor, 534 first mounting plate, 535 first tooth profile detection sensor, 536 second mounting plate, 6 worm gear.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Please refer to FIG. 1 and FIG. 2 , a worm gear detection and screening device is used for size detection, fitting analysis and automatic screening of the worm gear 6 , including a rack device 1 and a feeding and unloading device 2 . The rack device 1 includes a complete machine base 13 , a complete machine frame 11 fixed on the top of the complete machine base 13 , and a detection device base 12 fixed on the upper middle of the complete machine base 13 . Feeding device 3, clamping and rotating device 4, detection device 5. In this embodiment, a square notch is formed in the middle of the base 12 of the detection device, and the bottom surface of the notch and the top surface of the base 13 of the whole machine are located in the same horizontal plane.

Please refer to FIG. 3 , the feeding and unloading device 2 is located on the longitudinal side of the base 13 of the whole machine and on the lateral sides of the detection device base 12, and is used for feeding the worm gear 6 to be detected and the worm gear 6 after the detection. Its specific structure includes a feeding tray stacker 21 , a feeding tray stacker 24 , a feeding manipulator 27 , a feeding manipulator 28 , and a feeding manipulator 29 .

The feeding tray stacker 21 is provided with a plurality of stacked feeding trays 22 , and the feeding tray stacker 24 is provided with a plurality of stacked feeding trays 25 . In this embodiment, both the loading tray stacker 21 and the unloading tray stacker 24 adopt the structure of the prior art, and are provided with a stepping conveying device and a positioning mechanism to ensure the continuous feeding, The automatic positioning and automatic stacking of the unloading tray 25 will not be described in detail here. The loading tray 22 and the unloading tray 25 are provided with 7*6 rectangular placement slots, which can accommodate 42 worm gears 6 at the same time.

The top of the whole machine frame 11 is provided with a feeding manipulator guide rail 23 and a feeding manipulator guide rail 26 arranged in the longitudinal direction. At the bottom of the feeder, the feeding manipulator 27 can simultaneously grab a row of seven worm gears 6 on the feeding tray 22 and place them on the feeding end of the feeding and discharging device 3, and the feeding manipulator 28 can simultaneously grab the feeding and discharging device. The 7 worm gears 6 on the discharge end of 3 are placed in the placement groove of the unloading tray 25. In addition, the grasping part of the unloading manipulator 28 is provided with a plurality of partition plates to ensure that the arrangement spacing of the seven worm gears 6 after grasping meets the requirements of accurate placement on the unloading tray 25 .

The picking manipulator 29 is fixed on the top surface of the base 13 of the whole machine and on the side of the discharging section of the feeding and discharging device 3. One side of the picking manipulator 29 is provided with a picking tray 210 located in the side gap of the base 12 of the detection device. , the picking manipulator 29 grabs the unqualified worm gear 6 after detection and analysis and places it in the picking tray 210 . In this embodiment, the feeding manipulator 27 , the feeding manipulator 28 , and the feeding manipulator 29 all adopt the prior art, and are provided with corresponding actuators and control modules, which will not be described in detail here.

Please refer to FIG. 4 , the feeding and discharging device 3 is fixed on the top surface of the base 13 of the whole machine, and the lateral sides of the clamping and rotating device 4 are used for feeding the worm gears 6 to be detected one by one and the detected worm gears 6 one by one. For sending out, its specific structure includes a feeding component 31 and a discharging component 32 .

The feeding assembly 31 includes a stepping feeding mechanism 310 fixed on the top surface of the base 13 of the whole machine, and feeding guide rails 311 fixed on the longitudinal edges of the top of the stepping feeding mechanism 310. The stepping and discharging mechanism 320 on the top surface of the base 13 and the discharging guide rails 321 fixed to the longitudinal edges of the top of the stepping and discharging mechanism 320 are provided. In this embodiment, the stepping feeding mechanism 310 and the stepping discharging mechanism 320 both adopt a conveyor belt conveying mechanism driven by a stepping motor. The material guide rail 311 is conveyed to the clamping rotating device 4 or the worm gear 6 on the clamping rotating device 4 is driven to be conveyed to the material discharging position along the discharge guide rail 321 .

Preferably, the projections of the feeding guide rail 311 and the discharging guide rail 321 in the transmission direction of the feeding and discharging device 3 are overlapped to ensure the process that the worm wheel 6 enters the clamping and rotating device 4 from the feeding guide rail 311 and then enters the discharging guide rail 321 can be connected smoothly. The inner walls of the feeding guide rail 311 and the discharging guide rail 321 are provided with a soft support layer, and a rubber layer is used here to ensure that the worm wheel 6 will not roll freely in the feeding guide rail 311 or the discharging guide rail 321, and must be fed by stepping The driving of the mechanism 310 realizes feeding one by one, and the driving of the stepping and discharging mechanism 320 realizes feeding one by one.

In addition, an infrared detection sensor (not shown in the figure) and an infrared counting sensor (not shown in the figure) are respectively provided on the outer wall of the discharge guide rail 321 along the transmission direction of the feeding and discharging device 3, and the infrared detection sensor is installed on the picking manipulator. The grasping position of 29 is used to detect whether the unqualified worm gear 6 arrives, and control the unqualified turbine 6 to reach the grasping position after the stepping and discharging mechanism 320 suspends work and starts the grasping process of the picking manipulator 29 . The infrared counting sensor is used to record the number of qualified worm gears 6 on the stepping and discharging mechanism 320 . When the count of qualified worm gears 6 is 7, the grabbing process of the unloading manipulator 28 is started and counted again.

Referring to FIG. 5, the clamping and rotating device 4 is fixed on the side of the detection device base 12 and the middle of the top surface of the base 13 of the whole machine, and is used for the clamping of the worm gear 6 to be detected and the positioning of the detection position of the worm gear 6. Its specific structure includes: The rotating assembly 41 and the clamping assembly 42 are located directly above the clamping assembly 42 .

The rotating assembly 41 includes a first linear module 411 vertically fixed on the top of the side surface of the detection device base 12, a first mounting body 412 driven by the first linear module 411, and a rotating roller is rotatably connected to the bottom inner side of the first mounting body 412 414 , the first linear module 411 drives the rotating roller 414 to clamp the worm gear 6 on the clamping assembly 42 . A rotary drive motor 413 is mounted on the side of the first mounting body 412 , and the output shaft end of the rotary drive motor 413 is connected to the middle shaft portion of the rotary roller 414 through a transmission mechanism located in the first mounting body 412 , and the rotary drive motor 413 drives the rotary roller 414 is rotated, thereby driving the worm gear 6 to rotate along its own axis in the clamping position.

The clamping assembly 42 includes a second linear module 421 vertically fixed to the middle of the side surface of the detection device base 12, and a second mounting body 423 driven by the second linear module 421. The inner top of the second mounting body 423 is rotatably connected with two Two clamping support wheels 424 are arranged side by side in the second mounting body 423 with the same outer diameters and the axes are in the same horizontal plane, which can ensure the automatic centering of the worm gear 6 when it is placed.

Preferably, an annular positioning protrusion (not shown in the figure) is provided at the center of the outer circular surface of the clamping support wheel 424, and the surface of the positioning protrusion matches the groove on the outer tooth surface of the worm wheel 6, so that the worm wheel 6 After being placed on the two clamping support wheels 424, the center plane of the worm wheel 6 perpendicular to the axis automatically coincides with the center plane of the clamping support wheel 424, ensuring that the axial position of the worm wheel 6 is uniquely determined on the clamping assembly 42. , and the worm gear 6 will not be offset in the axial direction during the rotation detection process.

Preferably, positioning plates 422 are fixedly connected to both sides of the top of the second mounting body 423 for automatic positioning when the worm gear 6 is sent to the clamping and rotating device. The projection of the axis of the rotating roller 414 in the horizontal plane is located in the middle of the projection of the axes of the two clamping support wheels 424 in the horizontal plane, so that the worm wheel 6 is balanced in force and rotates smoothly at the clamping position.

Please refer to FIG. 6 , the detection device 5 is located in the middle of the detection device base 12 and fixed on the top surface of the base 13 of the whole machine. It cooperates with the clamping and rotating device 4 to realize the detection of various size parameters of the worm gear 6 , and its specific structure includes: Inner hole detection mechanism 51 , thickness detection mechanism 52 , tooth profile detection mechanism 53 .

The inner hole detection mechanism 51 is located on the longitudinal side of the clamping and rotating device 4, and is used to detect the size parameters of the inner hole structure of the worm gear 6. The probe bracket 513 driven by the group 511, the end of the probe bracket 513 is embedded with an inner hole detection sensor 512, the detection position of the inner hole detection sensor 512 is located on the axis of the worm gear 6, and the inner hole detection sensor is driven by the third linear module 511. The 512 extends into the inner hole of the worm wheel 6, and cooperates with the rotation of the worm wheel 6 to detect the diameter of the inner hole.

The thickness detection mechanism 52 is located on both longitudinal sides of the clamping and rotating device 4, and is used to detect the size parameters of the end surface structure of the worm gear 6, including the first mounting bracket 521 and the second mounting bracket 522 fixed on the top surface of the base 13 of the whole machine. A first thickness detection sensor 523 is mounted on the top of the mounting bracket 521 , and a second thickness detection sensor 524 is mounted on the top of the second mounting bracket 522 . The detection positions of the first thickness detection sensor 523 and the second thickness detection sensor 524 are located in the same horizontal plane.

The tooth profile detection mechanism 53 is located on both lateral sides of the clamping and rotating device 4, and is used to detect the size parameters of the tooth profile structure of the worm gear 6, including the fourth linear module 531 and the fifth linear module fixed on the top surface of the base 13 of the whole machine. Group 532 , a first mounting plate 534 driven by the fourth linear module 531 , and a second mounting plate 536 driven by the fifth linear module 532 . A first tooth profile detection sensor 535 is installed on the top of the first mounting plate 534 near the clamping and rotating device 4. The fourth linear module 531 drives the first tooth profile detection sensor 535 to move along the axis of the worm gear 6, and the worm gear The position of the axial middle plane of 6 is the detection sampling point. A second tooth profile detection sensor 533 is installed on the top of the second mounting plate 536 close to the clamping and rotating device 4 , and the fifth linear module 532 drives the second profile detection sensor 533 to move along the axis of the worm gear 6 , and is consistent with the first tooth profile detection sensor 533 . A tooth profile detection sensor 535 horizontally spaced apart by a certain distance is a detection sampling point.

In this embodiment, each linear module adopts a ball screw type linear module driven by a servo motor, and a moving carriage with guide rails is used as a moving actuator, which has the characteristics of high transmission precision, stable transmission and low transmission noise. , and the positioning accuracy is high. All sensors in the detection device 5 use laser sensors, by collecting the distance parameters of each preset data collection point of the worm gear 6, and collecting and summarizing the parameters to the data analysis software on the computer (such as data collection and analysis based on LabVIEW software development. Platform), the collected data is simulated and fitted by the software, and each detection size of the worm gear is calculated, compared with the theoretical worm wheel size parameters, and the qualified condition of each size of the detected worm wheel can be analyzed.

The invention also provides a method for detecting and screening a worm gear. The worm gear detection and screening device automatically detects various size parameters of the worm gear, and automatically screens the worm gear through data analysis. The specific working process is as follows:

(1) Feeding and feeding process

The loading tray 22 equipped with the worm gear 6 is stacked in the pallet warehouse to be tested, and the loading tray stacker 21 pushes the loading tray 22 to the grasping position of the loading manipulator 27, and the feeding manipulator 27 follows the feeding manipulator guide rail 23. Move and grab a row of 7 worm gears 6 to be tested from the feeding tray 22 and send them to the feeding guide 311 and release them. The worm gears 6 are placed on the conveyor belt in the stepping feeding mechanism 310, and the feeding The mechanism 310 works, and the feeding is carried out step by step through the conveyor belt, so that the worm gear 6 reaches the clamping and rotating device 4 .

(2) Clamping and positioning process

When the stepping feeding mechanism 310 sends the worm wheel 6 to the clamping rotating device 4, the worm wheel 6 enters the clamping support wheel 424, starts the work of the first linear module, and drives the rotating roller 414 to move downward until the worm wheel 6 is pressed tightly On clamping support wheel 424. Then the second linear module works and the first linear module works in reverse, synchronously pushes the worm gear 6 in the clamped state to the detection position, and the rotary drive motor 413 works to drive the rotary roller 414 to rotate, thereby driving the worm gear 6 in the original clamping position. to rotate. At this time, the worm gear 6 enters the state to be detected.

(3) Detection process

After the worm gear 6 is clamped and enters the state to be detected, the corresponding laser sensors in each detection device are respectively activated to detect the corresponding size parameters of the worm gear 6 .

①Aperture size detection of the inner hole of worm gear 6

Start the inner hole detection sensor 512 to work, drive the probe bracket 513 to move horizontally a certain distance through the third linear module 511, so that the inner hole detection sensor 512 on the probe bracket 513 extends into the inner hole of the worm gear 6, and the third linear module 511 suspended work. Since the detection position of the inner hole detection sensor 512 is located at the axial position of the worm wheel 6, and the detection position of the detection position is a constant value from the hole wall of the inner hole, during the rotation of the worm wheel 6 at a certain speed, the inner hole detection sensor 512 is detected at a constant frequency. The surface of the inner hole of the worm gear 6 is detected by sampling points. The collected data points are transmitted to the data analysis software of the computer, and the radius size distribution curve of the inner hole of the worm gear 6 can be automatically fitted. When the inner hole is a round hole, the curve fitted by the collection point is an approximate horizontal line, and when the inner hole is a spline hole, the curve fitted by the collection point is an approximate rectangular square wave. At the same time, since the rotational speed of the worm gear 6 is constant and the detection frequency of the inner hole detection sensor 512 is fixed, the speed of the worm gear 6 and the number of collection points within the range of a single large-diameter arc length and a single small-diameter arc length of the inner spline hole can be automatically calculated by the software. Calculate the arc length of the major diameter and the arc length of the minor diameter of the inner spline hole, so as to obtain the size information of the inner spline hole.

After the detection is completed, the inner hole detection sensor 512 is turned off, and the third linear module is started to rotate in the reverse direction, so that each component of the inner hole detection mechanism 51 is reset.

②Dimensional detection of worm gear 6 tooth profile

Start the first tooth profile detection sensor 535 and the second tooth profile detection sensor 533 to work, drive the first mounting plate 534 to move horizontally by a preset distance through the fourth linear module 531, so that the detection position of the first tooth profile detection sensor 535 reaches The position of the middle surface of the worm gear 6 in the clamped state is driven by the fifth linear module 532 to drive the second mounting plate 536 to move horizontally by a preset distance, so that the second tooth profile detection sensor 533 reaches the detection position with the first tooth profile detection sensor 535 Deviating from the detection position of a certain distance, the worm wheel 6 rotates at a certain speed, and the first tooth profile detection sensor 535 and the second tooth profile detection sensor 533 respectively detect two sampling points of the outer tooth surface at a constant frequency. Through the above data acquisition, analysis and processing method, the tooth profile of the middle plane of the worm gear 6 and the tooth profile of another detection position can be fitted respectively. Since the horizontal and vertical distances of the detection positions of the first tooth profile detection sensor 535 and the second tooth profile detection sensor 533 are known, the fitted tooth profile of the middle plane of the worm gear 6 and the tooth profile of another detection position, The corresponding external tooth helix angle can be calculated.

After the detection is completed, the first tooth profile detection sensor 535 and the second tooth profile detection sensor 533 are turned off, and the fourth linear module 531 and the fifth linear module 532 are turned on to reversely rotate to reset the components of the tooth profile detection mechanism 53 .

③ Detection of thickness dimension of worm gear 6

After the detection of the inner hole and the outer tooth surface of the worm gear 6 is completed, the rotary drive motor 413 is turned off to stop the rotation of the worm gear 6 . Turn on the first thickness detection sensor 523 and the second thickness detection sensor 524, start the first linear module 411 and the second linear module 421, and make the first mounting body 412 and the second mounting body 423 move upward at the same speed until The worm wheel 6 moves to the thickness dimension detection position of the worm wheel 6 in the clamped state. The first thickness detection sensor 523 and the second thickness detection sensor 524 detect the distances between the two detection positions and the two worm gears 6 respectively. If the relative distance is known, then the distance between the two detection positions is deducted from the detection distance of the two detection positions respectively, and the thickness dimension of the worm gear 6 can be obtained. If the turbine 6 has end surface structures such as R-shaped grooves and bosses, the synchronous operation of the first linear module 411 and the second linear module 421 can change the detection and sampling position of the worm gear 6 in the vertical direction. The method completes the height/depth of each structure in the thickness direction of the worm gear 6 .

After the detection is completed, the first thickness detection sensor 523 and the second thickness detection sensor 524 are turned off, and the first linear module 411 and the second linear module 421 are activated to reset the components of the clamping and rotating device 4 . At this time, the detected worm gear 6 is located at the conveying height of the feeding and discharging device 3 .

After the detection of all the above dimension parameters is completed, the detection data is transmitted to the data analysis and processing software of the computer, and the fitting analysis of each dimension parameter of the worm gear 6 is performed, and the result obtained by the fitting analysis is compared with the corresponding theoretical parameter size of the worm gear 6. Analyze, judge whether the parameter size of the worm gear 6 is qualified through the analysis results, and automatically record the analysis results.

(4) Discharging and unloading process

After the detection of the previous worm gear 6 is completed, the stepping feeding mechanism 310 works to feed a worm gear 6 to be detected, and then the detected worm gear 6 is automatically pushed into the stepping discharging mechanism 320, and the stepping discharging mechanism 320 Send the detected worm gear 6 to the feeding position. If the detection result of the worm gear 6 is unqualified, the system will automatically start the infrared detection sensor to work. When the unqualified worm gear 6 arrives, it will control the stepping and discharging mechanism 320 to suspend the work, and start the picking manipulator 29. The unqualified worm gear 6 is grabbed and placed in the reject tray 210 . After the picking manipulator 29 is finished grabbing, the infrared detector is automatically turned off.

If the detection result of the worm gear 6 is qualified, the stepping and discharging mechanism 320 directly transports the detected worm gear 6 to the unloading position, and the infrared counting sensor records the number of the worm gears 6 passing through during the transportation process. When the count is 7, the unloading manipulator 28 is automatically started to work, grabs the seven worm gears 6 at the same time, and places them in the unloading tray 25 . The infrared counting sensor counts again, and the software system records the number of qualified and unqualified worm gears 6.

Obviously, the worm gear detection and screening device proposed by the present invention slightly adjusts or replaces the clamping rotating device 4, and is also applicable to other types of gears, as well as the dimensional parameter detection of sprockets, synchronous wheels, spline shafts and other structures. Shape curve fitting and automatic comparative analysis of test results.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims (9)

1. The utility model provides a worm wheel detects sieving mechanism for size detection, fitting analysis and autofilter of worm wheel (6), its characterized in that: comprises a frame device (1) and a feeding and blanking device (2);

the machine frame device (1) comprises a whole machine base (13), a whole machine frame (11) fixed at the top of the whole machine base (13) and a detection device base (12) fixed in the middle of the upper part of the whole machine base (13), wherein a feeding and discharging device (3), a clamping and rotating device (4) and a detection device (5) are respectively arranged on the machine frame device (1);

the clamping rotating device (4) is fixed on the side surface of the detection device base (12) and the middle part of the top surface of the whole machine base (13) and is used for clamping the worm gear (6) to be detected and positioning the detection position of the worm gear (6);

the clamping rotating device (4) comprises a rotating assembly (41) and a clamping assembly (42), and the rotating assembly (41) is positioned right above the clamping assembly (42);

the rotating assembly (41) comprises a first linear module (411) vertically fixed at the top of the side surface of the detection device base (12) and a first installation body (412) driven by the first linear module (411), the bottom of the first installation body (412) is rotatably connected with a rotating roller (414), and a rotating driving motor (413) for driving the rotating roller (414) to rotate is installed on the side surface of the first installation body (412);

the clamping assembly (42) comprises a second linear module (421) vertically fixed in the middle of the detection device base (12) and a second installation body (423) driven by the second linear module (421), and the top of the second installation body (423) is rotatably connected with two clamping support wheels (424);

the feeding and discharging devices (3) are fixed on the top surface of the whole machine base (13) and the two transverse sides of the clamping and rotating device (4) and are used for feeding the worm gears (6) to be detected one by one and feeding out the detected worm gears (6) one by one;

the detection device (5) is positioned in the middle of the detection device base (12) and fixed on the top surface of the whole machine base (13), and is matched with the clamping rotating device (4) to realize detection of various size parameters of the worm wheel (6);

the feeding and blanking device (2) is located on one longitudinal side of the whole machine base (13) and two transverse sides of the detection device base (12) and used for feeding the worm gear (6) to be detected and blanking the detected worm gear (6).

2. The worm gear detection screening device according to claim 1, wherein: the feeding and discharging device (2) comprises a feeding tray stacker (21), a discharging tray stacker (24), a feeding manipulator (27), a discharging manipulator (28) and a rejecting manipulator (29);

a plurality of stacked feeding trays (22) are arranged on the feeding tray stacker (21), a feeding manipulator guide rail (23) which is fixed to the top of the whole machine frame (11) and is longitudinally arranged is arranged above the feeding tray stacker (21), and the feeding manipulator (27) is mounted at the bottom of the feeding manipulator guide rail (23);

a plurality of stacked blanking trays (25) are arranged on the blanking tray stacker (24), a blanking manipulator guide rail (26) which is fixed at the top of the whole machine frame (11) and is longitudinally arranged is arranged above the blanking tray stacker (24), and the blanking manipulator (28) is arranged at the bottom of the blanking manipulator guide rail (26);

the material rejecting mechanical arm (29) is fixed on the top surface of the whole machine base (13) and one side of the discharging section of the feeding and discharging device (3), and a material rejecting tray (210) located in the middle of the detection device base (12) is arranged on one side of the material rejecting mechanical arm (29).

3. The worm gear detection screening device according to claim 1, wherein: the feeding and discharging device (3) comprises a feeding assembly (31) and a discharging assembly (32);

the feeding assembly (31) comprises a stepping feeding mechanism (310) fixed on the top surface of the whole machine base (13) and feeding guide rails (311) fixed on the edges of the two longitudinal sides of the top of the stepping feeding mechanism (310);

the discharging component (32) comprises a feeding and discharging mechanism (320) fixed on the top surface of the whole machine base (13) and discharging guide rails (321) fixed at the edges of the two longitudinal sides of the top of the feeding and discharging mechanism (320).

4. The worm gear detection screening device according to claim 3, wherein: the projections of the feeding guide rail (311) and the discharging guide rail (321) in the transmission direction of the feeding and discharging device (3) are overlapped, and the inner walls of the feeding guide rail (311) and the discharging guide rail (321) are provided with soft supporting layers.

5. The worm gear detection screening device according to claim 3, wherein: and an infrared detection sensor and an infrared counting sensor are respectively arranged on the outer wall of the discharging guide rail (321) along the transmission direction of the feeding and discharging device (3).

6. The worm gear detection screening device according to claim 1, wherein: positioning plates (422) are fixedly connected to two sides of the top of the second mounting body (423).

7. The worm gear detection screening device according to claim 1, wherein: the projection of the axis of the rotating roller (414) in the horizontal plane is positioned at the middle position of the projection of the axes of the two clamping support wheels (424) in the horizontal plane.

8. The worm gear detection screening device according to claim 1, wherein: the detection device (5) comprises an inner hole detection mechanism (51), a thickness detection mechanism (52) and a tooth profile detection mechanism (53);

the inner hole detection mechanism (51) is positioned on one longitudinal side of the clamping rotating device (4) and comprises a third linear module (511) fixed on the top surface of the whole machine base (13) and a probe bracket (513) driven by the third linear module (511), and an inner hole detection sensor (512) is embedded at the end part of the probe bracket (513);

the thickness detection mechanisms (52) are positioned at the two longitudinal sides of the clamping rotating device (4) and comprise a first mounting frame (521) and a second mounting frame (522) which are fixed on the top surface of the whole machine base (13), a first thickness detection sensor (523) is installed at the top of the first mounting frame (521), and a second thickness detection sensor (524) is installed at the top of the second mounting frame (522);

tooth profile detection mechanism (53) are located the horizontal both sides of clamping rotary device (4), including fourth linear module (531) that is fixed in complete machine base (13) top surface, fifth linear module (532), by first mounting panel (534) of fourth linear module (531) drive, by second mounting panel (536) of fifth linear module (532) drive, first tooth profile detection sensor (535) are installed to the top of first mounting panel (534) is close to clamping rotary device (4) one side, second tooth profile detection sensor (533) are installed to the top of second mounting panel (536) is close to clamping rotary device (4) one side.

9. The worm gear detection screening device according to claim 8, wherein: the detection positions of the first tooth profile detection sensor (535) and the second tooth profile detection sensor (533) and the axis of the clamped worm wheel (6) are positioned in the same horizontal plane and are respectively positioned at different positions in the axial direction of the clamped worm wheel (6).

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