Detection equipment for intermediate axle air chamber support casting

Abstract

An intermediate axle air chamber support casting detection device belongs to the field of casting detection and is composed of a shading box, a coaxiality detection device, a casting clamp device, a perpendicularity detection device, a measurement display, a first parallel light source module and a second parallel light source module. The verticality detection device is fixed on the inner bottom surface of the shading box through a bolt and is perpendicular to the light of the first parallel light source module, the first parallel light source module is fixed on the inner bottom surface of the shading box through a bolt, and the coaxiality detection device is mounted on the inner side wall of the shading box through a bolt and is perpendicular to the light of the first parallel light source module. The casting clamp device is fixedly installed on the inner bottom face of the shading box through bolts, the upper end of the casting clamp device and the second parallel light source module device are fixedly installed through bolts, and the measurement displayer is fixed to the outer side wall of the shading box through bolts. The detection equipment can quickly obtain various position tolerance parameters of the middle axle air chamber support casting.

Description

Technical Field

[0001] The invention relates to a casting detection device for a mid-bridge air chamber bracket, in particular to a detection device which adopts a fixing fixture of a special structure, a photosensitive sensor and a laser distance measuring sensor, and belongs to the field of casting detection devices. Background Art

[0002] In modern manufacturing, tolerance testing of castings is an important part of ensuring product quality. As one of the key components of the automobile chassis, the quality of the mid-bridge air chamber bracket directly affects the safety and reliability of the automobile. In order to ensure the quality of the mid-bridge air chamber bracket, it needs to be strictly tested. The traditional casting tolerance detection method mainly relies on manual visual inspection and measurement with measuring tools such as dial indicators. This manual measurement method has problems such as low detection efficiency, low accuracy, and easy missed detection. There is an urgent need for a high-precision, automated casting tolerance detection equipment, but there is currently no such detection equipment on the market. Summary of the invention

[0003] In view of the problem that the accuracy of manual detection devices is low, the present invention provides a mid-bridge air chamber bracket casting detection device.

[0004] The present invention is achieved through the following technical solutions: a mid-bridge air chamber bracket casting detection device, which is composed of a light shielding box, a coaxiality detection device, a casting clamp device, a verticality detection device, a measurement display, a first parallel light source module and a second parallel light source module. The verticality detection device is fixed to the inner bottom surface of the light shielding box by bolts and is perpendicular to the light of the first parallel light source module. The first parallel light source module is fixed to the inner bottom surface of the light shielding box by bolts. The coaxiality detection device is installed on the side wall inside the light shielding box by bolts. The casting clamp device is fixedly installed on the inner bottom surface of the light shielding box by bolts, and its upper end is fixedly installed with the second parallel light source module device by bolts. The measurement display is fixed to the side wall outside the light shielding box by bolts.

[0005] The coaxiality detection device is composed of a coaxiality detection fixed seat, a stepper motor, a first laser ranging sensor, a second laser ranging sensor, a third laser ranging sensor, a fourth laser ranging sensor, a first laser ranging sensor fixed disc, a second laser ranging sensor fixed disc, a bearing support seat, a front end cover, a bearing, a rear end cover, a rotating shaft and a coupling. The stepper motor is fixed to the upper end of the coaxiality detection fixed seat by bolts, the rotating shaft is fixed to the output shaft of the stepper motor by a coupling, and the rotating shaft is coaxial with the working hole of the middle bridge air chamber bracket, the bearing is installed on the rotating shaft, the bearing is fixed to the bearing support seat by the front end cover and the rear end cover, the bearing support seat is fixed to the bottom plate of the light shielding box, the first laser ranging sensor and the second laser ranging sensor are installed on the side of the first laser ranging sensor fixed disc by bolts, and the third laser ranging sensor and the fourth laser ranging sensor are installed on the side of the second laser ranging sensor fixed disc by bolts.

[0006] The casting fixture device is composed of a fixture base, a fixture base support plate, a first semicircular clamping block, a second semicircular clamping block and a spring. The fixture base is fixed to the upper end of the fixture base support plate by bolts, the first semicircular clamping block and the second semicircular clamping block are sleeved on the guide column of the fixture base, the spring is sleeved on the guide column of the fixture base, the upper end of the spring is connected to the fixture base, and the lower end of the spring is connected to the first semicircular clamping block and the second semicircular clamping block.

[0007] The verticality detection device is composed of a first photosensitive image sensor, a second photosensitive image sensor, a third photosensitive image sensor, a fourth photosensitive image sensor, a fifth photosensitive image sensor and an L-shaped fixing plate. The first photosensitive image sensor, the second photosensitive image sensor and the third photosensitive image sensor are fixed on the bottom plate of the light-shielding box by bolts. The first photosensitive image sensor and the third photosensitive image sensor are directly opposite to the mounting hole of the center bridge air chamber bracket, the second photosensitive image sensor is located between the first photosensitive image sensor and the third photosensitive image sensor, and the fourth photosensitive image sensor and the fifth photosensitive image sensor are fixed on the L-shaped fixing plate by bolts.

[0008] The benefit of this invention is that the detection equipment uses a combination of photosensitive image sensors and laser ranging sensors to quickly obtain various position tolerance parameters of the center bridge air chamber bracket casting, greatly shortening the detection time. The automated detection process reduces dependence on manual labor, reduces false detections and missed detections due to human factors, reduces scrap rates and production costs, facilitates timely detection of defects in castings, avoids problematic products from entering the market, and improves the safety and reliability of automobiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is a structural schematic diagram of the present invention;

[0010] Figure 2 It is a schematic diagram of the structure when the present invention is used;

[0011] Figure 3 for Figure 1 The structural diagram of the coaxiality detection part;

[0012] Figure 4 for Figure 1 A schematic diagram of the structure of the laser distance measuring sensor distribution in the coaxiality detection part;

[0013] Figure 5 for Figure 1 A schematic diagram of the structure of the clamping part of the middle bridge air chamber bracket;

[0014] Figure 6 for Figure 1 The structural diagram of the verticality detection part;

[0015] In order to clearly express the detection workpiece of the device of the present invention, the following Figure 7 It is a schematic diagram of the bridge air chamber bracket in the detection object of the device.

[0016] In the figure, 1, light shielding box, 2, coaxiality detection device, 3, casting fixture device, 4, verticality detection device, 5, measurement display, 6, first parallel light source module, 7, second parallel light source module;

[0017] 201, coaxiality detection fixed seat, 202, stepping motor, 203, coupling, 204, rotating shaft, 205, first laser ranging sensor, 206, second laser ranging sensor, 207, first laser ranging sensor fixed disc, 208, bearing support seat, 209, third laser ranging sensor, 2010, fourth laser ranging sensor, 2011, second laser ranging sensor fixed disc, 2012, front end cover, 2013, rear end cover, 2014, bearing;

[0018] 301, clamp base, 302, clamp support plate, 303, first semicircular clamp block, 304, second semicircular clamp block, 305, spring;

[0019] 401, a first photosensitive image sensor, 402, a second photosensitive image sensor, 403, a third photosensitive image sensor, 404, a fourth photosensitive image sensor, 405, a fifth photosensitive image sensor, 406, an L-shaped photosensitive sensor fixing plate. DETAILED DESCRIPTION

[0020] A mid-bridge air chamber bracket casting detection device is composed of a light shielding box 1, a coaxiality detection device 2, a casting clamp device 3, a verticality detection device 4, a measurement display 5, a first parallel light source module 6 and a second parallel light source module 7. The verticality detection device 4 is fixed to the inner bottom surface of the light shielding box 1 by bolts and is perpendicular to the light of the first parallel light source module 6. The first parallel light source module 6 is fixed to the inner bottom surface of the light shielding box 1 by bolts. The coaxiality detection device 2 is installed on the side wall inside the light shielding box 1 by bolts. The casting clamp device 3 is fixedly installed on the inner bottom surface of the light shielding box 1 by bolts, and its upper end is fixedly installed with the second parallel light source module 7 by bolts. The measurement display 5 is fixed to the side wall outside the light shielding box 1 by bolts.

[0021] The coaxiality detection device is composed of a coaxiality detection fixed seat 201, a stepper motor 202, a first laser distance sensor 205, a second laser distance sensor 206, a third laser distance sensor 209, a fourth laser distance sensor 2010, a first laser distance sensor fixed disk 207, a second laser distance sensor fixed disk 2011, a bearing support seat 208, a front end cover 2012, a bearing 2014, a rear end cover 2013, a rotating shaft 204 and a coupling 203. The stepper motor 202 is fixed to the upper end of the coaxiality detection fixed seat 201 by bolts, and the rotating shaft 204 is fixed to the stepper motor 202 by the coupling 203. The first laser ranging sensor 205 and the second laser ranging sensor 206 are installed on the side of the first laser ranging sensor fixed disk 207 by bolts, and the third laser ranging sensor 209 and the fourth laser ranging sensor 2010 are installed on the side of the second laser ranging sensor fixed disk 2011 by bolts.

[0022] The casting fixture device is composed of a fixture base 301, a fixture base support plate 302, a first semicircular clamp block 303, a second semicircular clamp block 304 and a spring 305. The fixture base 301 is fixedly installed on the upper end of the fixture base support plate 302 by bolts, the first semicircular clamp block 303 and the second semicircular clamp block 304 are sleeved on the guide column of the fixture base 301, and the spring 305 is sleeved on the guide column of the fixture base 301. The upper end of the spring 305 is connected to the fixture base 301, and the lower end of the spring 305 is connected to the first semicircular clamp block 303 and the second semicircular clamp block 304.

[0023] The verticality detection device is composed of a first photosensitive image sensor 401, a second photosensitive image sensor 402, a third photosensitive image sensor 403, a fourth photosensitive image sensor 404, a fifth photosensitive image sensor 405 and an L-shaped fixing plate 406. The first photosensitive image sensor 401, the second photosensitive image sensor 402, and the third photosensitive image sensor 403 are fixed on the bottom plate of the light-shielding box 1 by bolts. The first photosensitive image sensor 401 and the third photosensitive image sensor 403 are directly opposite to the mounting hole of the center bridge air chamber bracket, and the second photosensitive image sensor 402 is located between the first photosensitive image sensor 401 and the third photosensitive image sensor 403. The fourth photosensitive image sensor 404 and the fifth photosensitive image sensor 405 are fixed on the L-shaped fixing plate 406 by bolts.

[0024] When the device is used for testing, the middle bridge air chamber bracket is placed on the upper end of the fixture base 301, and the middle bridge air chamber bracket is fixed by clamping the first semicircular clamp block 303, the second semicircular clamp block 304 and the spring 305. The first parallel light source module 6 directly emits parallel light to project the external size shape of the object onto the fourth photosensitive image sensor 404 and the fifth photosensitive image sensor 405. After the fourth photosensitive image sensor 404 and the fifth photosensitive image sensor 405 are directly irradiated by the parallel light source, the coordinate position is fed back on the sensor. The fourth photosensitive image sensor 404 and the fifth photosensitive image sensor 405 feed back the coordinate position of the object shape to the measuring display 5. The measuring display 5 processes the two coordinate positions and obtains the verticality tolerance of the detected object. The second parallel light source module 7 directly emits parallel light to project the external size shape of the object onto the fourth photosensitive image sensor 404 and the fifth photosensitive image sensor 405. The shape of the object is projected onto the first photosensitive image sensor 401, the second photosensitive image sensor 402, and the third photosensitive image sensor 403. After the first photosensitive image sensor 401, the second photosensitive image sensor 402, and the third photosensitive image sensor 403 are directly illuminated by the parallel light source of the second parallel light source module 7, the first photosensitive image sensor 401, the second photosensitive image sensor 402, and the third photosensitive image sensor 403 feedback the coordinate position of the object shape to the measuring display 5 after the sensor feedbacks the coordinate position. The measuring display 5 compares the coordinate positions of the three and calculates the parallelism tolerance of the mounting hole of the object. The stepper motor 202 drives the rotating shaft 204 to rotate, and the laser ranging part at the end of the rotating shaft 204 rotates to measure the displacement size at different positions, which is fed back to the measuring display 5 to calculate the coaxiality of the object.

[0025] An iterative algorithm for the coaxiality detection method of the mid-bridge air chamber bracket casting. The measurement value of the laser distance measurement is d m The reference value is d b , the error is e;

[0026] Construct function f(e)=d m -db -e

[0027] Newton iteration: where f'(e n ) is f(e n ), and the value of the gap e is continuously updated in each iteration until the convergence condition is reached. At this time, e is the difference between the measured displacement and the reference, that is, the coaxiality difference.

[0028] For those skilled in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A method for detecting the coaxiality of a mid-bridge air chamber bracket casting, characterized in that: The sensor detection method comprises: S1: The laser distance sensor emits a light beam to the measuring surface and receives the reflected light beam to collect the distance information of the measuring surface; S2: The measuring display performs filtering and smoothing on the measured distance displacement to remove noise and abnormal values; the measured displacement data is used to determine the coaxiality error of the workpiece through the Newton iteration method; S3: Transmit the coaxiality error to the measurement display.

2. A method for detecting the verticality of a mid-bridge air chamber bracket casting, characterized in that: The sensor detection method comprises: S1: The photosensitive image sensor receives direct light from a parallel light source and displays the shape of the detected workpiece in the sensor; S2: The photosensitive image sensor performs verticality data calibration on the shape of the detected workpiece and the reference of the photosensitive image sensor; S3: Transmitting the verticality data to the measurement display.

3. A mid-bridge air chamber bracket casting detection device, which is composed of a light shielding box, a coaxiality detection device, a casting fixture device, a verticality detection device, a measurement display, a first parallel light source module, and a second parallel light source module, and is characterized in that: The verticality detection device is fixed to the inner bottom surface of the light shielding box by bolts and is perpendicular to the light of the first parallel light source module. The first parallel light source module is fixed to the inner bottom surface of the light shielding box by bolts. The coaxiality detection device is installed on the side wall inside the light shielding box by bolts. The casting fixture device is fixed to the inner bottom surface of the light shielding box by bolts, and its upper end is fixed to the second parallel light source module device by bolts. The measurement display is fixed to the side wall outside the light shielding box by bolts. The coaxiality detection device is composed of a coaxiality detection fixed seat, a stepper motor, a first laser ranging sensor, a second laser ranging sensor, a third laser ranging sensor, a fourth laser ranging sensor, a first laser ranging sensor fixed disc, a second laser ranging sensor fixed disc, a bearing support seat, a front end cover, a bearing, a rear end cover, a rotating shaft, and a coupling. The stepper motor is fixed to the upper end of the coaxiality detection fixed seat by bolts, the rotating shaft is fixed to the output shaft of the stepper motor by a coupling, and the rotating shaft is coaxial with the working hole of the middle bridge air chamber bracket, the bearing is installed on the rotating shaft, the bearing is fixed to the bearing support seat by the front end cover and the rear end cover, and the bearing support seat is fixed to the bottom plate of the light shielding box, the verticality detection device is composed of a first photosensitive image sensor, a second photosensitive image sensor, a third photosensitive image sensor, a fourth photosensitive image sensor, a fifth photosensitive image sensor, and an L-shaped fixing plate, and the first photosensitive image sensor, the second photosensitive image sensor, and the third photosensitive image sensor are fixed to the bottom plate of the light shielding box by bolts.

4. A mid-bridge air chamber bracket casting detection device as claimed in claim 3, characterized in that: The first photosensitive image sensor and the third photosensitive image sensor are directly opposite to the mounting hole of the center bridge air chamber bracket, the second photosensitive image sensor is located between the first photosensitive image sensor and the third photosensitive image sensor, and the fourth photosensitive image sensor and the fifth photosensitive image sensor are fixed to the L-shaped fixing plate by bolts.

5. The mid-bridge air chamber bracket casting detection device as claimed in claim 3, characterized in that: The first laser distance measuring sensor and the second laser distance measuring sensor are installed on the side of the first laser distance measuring sensor fixing disc by bolts, and the third laser distance measuring sensor and the fourth laser distance measuring sensor are installed on the side of the second laser distance measuring sensor fixing disc by bolts.

6. A mid-bridge air chamber bracket casting detection device as claimed in claim 3, characterized in that: The first laser distance measuring sensor, the second laser distance measuring sensor, the third laser distance measuring sensor and the fourth laser distance measuring sensor are symmetrically arranged on the rotation axis.

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