CN114791275A - Drum brake pad thickness and inner arc detection device and detection method - Google Patents
Drum brake pad thickness and inner arc detection device and detection method Download PDFInfo
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- CN114791275A CN114791275A CN202210097311.9A CN202210097311A CN114791275A CN 114791275 A CN114791275 A CN 114791275A CN 202210097311 A CN202210097311 A CN 202210097311A CN 114791275 A CN114791275 A CN 114791275A
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- 238000001514 detection method Methods 0.000 title claims abstract description 231
- 238000006073 displacement reaction Methods 0.000 claims abstract description 106
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 19
- 238000005299 abrasion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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Abstract
The invention relates to the technical field of brake pads, and discloses a drum brake pad thickness and inner arc detection device and a detection method, wherein the drum brake pad thickness and inner arc detection device comprises a support flat plate, a detection rotary supporting seat is fixed on the support flat plate, an arc surface detection table is rotatably connected on the detection rotary supporting seat, a thickness detection assembly is arranged above the detection table and comprises a first displacement sensor, the first displacement sensor is fixed on a thickness detection vertical frame, an inner arc detection assembly is arranged below the detection table and comprises a second displacement sensor, the detection head of the second displacement sensor faces the detection table, a driving assembly fixed at the lower part of the support flat plate is arranged below the detection table, and the driving detection table is driven to be close to or far away from the first displacement sensor and the second displacement sensor. Utilize drive assembly drive to examine test table and make the piece that awaits measuring be close to displacement sensor one respectively and measure with displacement sensor two, can successively record the thickness and the inner arc data of every piece that awaits measuring, easy operation measures accurately, detection efficiency is high, and the practicality is strong.
Description
Technical Field
The invention relates to the technical field of drum brake pads, in particular to a drum brake pad thickness and inner arc detection device and a detection method.
Background
In the case of the drum brake, since the brake pads that are stationary in the brake drum are used to rub against the brake drum that rotates with the wheel, thereby generating frictional forces to reduce the rotational speed of the wheel, it is necessary to detect the thickness and inner arc of the brake pads after the production and manufacture of the drum brake, so that the brake pads can be fitted to the brake drum to be engaged therewith, thereby ensuring the braking performance of the entire brake system and improving the safety performance of the brake system.
What present tradition still adopted is artifical manual measurement to the thickness of drum brake block and inner arc measurement, still adopt the mode of slide caliper rule when measuring brake block thickness, everybody can lead to the measuring result to produce great difference to measuring position's perception difference, can't guarantee measuring result's accuracy and repeatability requirement, inner arc measurement adopts the mode of utensil cooperation clearance gauge of standard inner arc to carry out the inner arc measurement simultaneously, measurement of efficiency is low, so need a quick automatic measurement have device and method of high accuracy repeatability's measuring result concurrently.
Disclosure of Invention
The invention aims to provide a drum brake pad thickness and inner arc detection device and a detection method, which have the effects of high detection precision, good repeatability, high detection efficiency, stable measurement result, no influence of system abrasion, simple and good operation of the detection method and strong practicability.
The technical purpose of the invention is realized by the following technical scheme: including supporting the flat board, its characterized in that: the utility model discloses a support platform, including support flat board, detection rotation support seat, displacement sensor, riser, detection platform top, thickness detection assembly, drive assembly, detection platform, detection platform, detection, and detection, detection platform, detection platform, detection, and detection platform, detection, and detection platform, detection, and detection, detection platform, detection platform, detection platform, and detection, and detection, and detection, and detection, detection.
Through adopting above-mentioned technical scheme, set up displacement sensor one above detecting the platform to make displacement sensor one detect the head orientation and detect the platform, when drive assembly drive detects the platform and rotates and reach measuring position, can accurately obtain the thickness of the piece that awaits measuring through reading the data in the displacement sensor one, easy operation is convenient.
The invention is further configured as follows: the detection platform rotates around a rotating shaft on the fixed rotary supporting seat, an inner arc detection assembly is arranged below a supporting flat plate below the detection platform and comprises a second displacement sensor, the detection head of the second displacement sensor faces the detection platform, the second displacement sensor is fixed on an inner arc detection stand, the inner arc detection stand is fixed under the supporting flat plate, and the driving assembly drives the detection platform to rotate to be close to or to be away from the second displacement sensor.
By adopting the technical scheme, the two displacement sensors in the inner arc detection assembly are positioned below the detection table, and when the inner arc detection assembly reaches the measurement position, the inner arc condition of the piece to be detected can be accurately obtained by reading data in the two displacement sensors.
The invention is further configured as follows: the thickness detects the grudging post and is perpendicular with the support plate, a displacement sensor fixed plate is fixed with perpendicularly on the thickness detects the grudging post, a displacement sensor laminating is fixed in on the displacement sensor fixed plate.
The invention is further configured as follows: the number of the fixed plates of the displacement sensor is not less than 2.
Through adopting above-mentioned technical scheme, thickness detection grudging post is perpendicular with the support plate, and a displacement sensor fixed plate vertical fixation again detects the grudging post in thickness for one displacement sensor is located the upper end of examining test table, conveniently detects thickness, and 2 are no less than to the quantity of a displacement sensor fixed plate simultaneously, and then 2 are no less than to the quantity of displacement sensor one, set up a plurality of displacement sensor one, compare through a plurality of numerical values for the measurement at the different positions of multiple spot of brake block.
The invention is further configured as follows: the inner arc detection stand is located below the thickness detection stand and fixed on the lower bottom surface of the support flat plate, two displacement sensor fixing plates are vertically fixed on the inner arc detection stand, and the two displacement sensors are attached and fixed on the two displacement sensor fixing plates.
The invention is further provided with: the number of the second fixing plates of the displacement sensors is not less than 3, and the number of the second displacement sensors on the second fixing plates of the displacement sensors is not less than 3.
By adopting the technical scheme, the number of the second displacement sensors is not less than 9, at least three groups of data can be obtained in the transverse direction and the longitudinal direction of the inner arc of the piece to be detected, and the size and the shape error of the inner arc of the piece to be detected can be comprehensively evaluated conveniently through multipoint measurement.
The invention is further configured as follows: the detection table is provided with a plurality of round holes, and the detection heads of the second displacement sensors respectively point to the round holes in a one-to-one correspondence mode.
Through adopting above-mentioned technical scheme, the round hole cooperates one by one with the first one that detects of displacement sensor two, conveniently detects the intrados of the piece that awaits measuring on examining test table.
The invention is further provided with: and the reverse extension lines of the axes of the detection heads of all the second displacement sensors are intersected with the same axis, and when the detection platform reaches the lower limit pin, the axis is superposed with the axis of the extrados of the detection platform.
By adopting the technical scheme, the accuracy of the measuring result is further ensured.
The invention is further configured as follows: the driving assembly comprises a first air cylinder, the first air cylinder is hinged to the bottom surface of one end of the detection table, the first air cylinder is fixed on a detection rotary air cylinder seat, and the detection rotary air cylinder seat is located below the detection table and fixed below the supporting flat plate.
Through adopting above-mentioned technical scheme, cylinder one articulates in detecting platform one end bottom surface, through starting cylinder one, can drive and detect the platform rotation, and is simple good operation.
The invention is further provided with: be close to and detect rotary supporting seat examine and be fixed with connecting plate one on the test table, be provided with the splint round pin on the connecting plate one, the splint round pin endotheca is equipped with the pressure spring, the pressure spring overcoat is established and is fixed with elastic splint, the elasticity drive elastic splint of pressure spring are close to each other with connecting plate one.
The invention is further provided with: the side edge of the detection platform, which is opposite to the elastic clamping plate, is vertically fixed with a second connecting plate, the second connecting plate is fixed with a second air cylinder, a piston rod of the second air cylinder is fixed with a clamping rubber block, and the clamping rubber block faces towards the detection platform.
Through adopting above-mentioned technical scheme, place the back on examining test table when standard component or detection piece, the piston rod of cylinder two stretches out, the drive presss from both sides tight rubber piece and constantly is close to the elastic clamping plate with standard component or the piece that awaits measuring, spring force drive elastic clamping plate is close to each other with connecting plate one, can compress tightly the standard component with the piece that awaits measuring stably on examining test table location limit and outer arc surface, the reinforcing standard component is accurate with the location of piece that awaits measuring on examining test table, avoid being examined the piece and remove when rotatory along with examining test table, further improve measuring result's repeatability and accuracy.
The invention is further provided with: be close to and detect rotatory supporting seat be fixed with the supporting seat on the support flat plate of examining test table side, the supporting seat top is fixed with the spacer pin and goes up the pressure buffer, go up the spacer pin and go up the pressure buffer orientation and examine test table, displacement sensing one examine the head than go up the spacer pin and be close to and examine test table.
The invention is further provided with: and a lower limit pin and a lower oil buffer are fixed below the supporting flat plate on one side of the air cylinder, the lower limit pin and the lower oil buffer are both positioned below the detection platform, and the detection head of the second displacement sensor is higher than the lower limit pin.
By adopting the technical scheme, the positions of the upper limit pin and the lower limit pin are the highest point and the lowest point of the rotation of the detection platform driven by the driving assembly, and are also the positioning points of the thickness and the inner arc measurement of the piece to be detected on the detection platform, and the upper oil pressure buffer and the lower oil pressure buffer are arranged beside the upper limit pin and the lower limit pin and play a role in buffering and decelerating before the detection platform reaches the positioning points, so that the sensor is protected from being impacted, and the measured data is stabilized.
The invention is further provided with: and a third air cylinder is fixed on the supporting flat plate between the supporting seat and the thickness detection vertical frame and is positioned above the lower limiting pin and the lower oil buffer.
By adopting the technical scheme, when the piston rod of the air cylinder III extends out, the detection table is supported, and the middle position is adopted, so that the normal feeding conveying, calibration and measurement of the standard part and the part to be detected are facilitated, and the standard part and the part to be detected are output.
The invention is further provided with: the lower end of one side of the detection table is fixedly provided with a sleeve which is sleeved on a rotating shaft which is rotatably connected in the detection rotary supporting seat.
The invention is further provided with: a method for detecting the thickness and the inner arc of a drum brake block is characterized by comprising the following steps: comprises the steps of calibrating a standard part and detecting a to-be-detected part, wherein the calibration of the standard part comprises
Starting a first air cylinder, rotating a detection platform and enabling the detection platform to be located above a supporting flat plate, starting a third air cylinder, enabling a piston rod of the third air cylinder to extend out, retracting the first air cylinder, and enabling the detection platform to fall onto the piston rod of the third air cylinder, wherein the middle position is;
secondly, placing the standard part on the detection table through an external device, starting a second air cylinder, driving a clamping rubber block to push the standard part, and stably pressing the standard part on the positioning edge and the outer arc surface of the detection table 3;
retracting piston rods of the first air cylinder and the third air cylinder, driving the detection platform to rotate and fall by the third air cylinder, and enabling the second displacement sensor to return to zero after the detection platform reaches a lower limit pin, which is inner arc calibration;
after the inner arc is calibrated, the first driving cylinder continuously pushes the detection table to rotate, so that the detection table is continuously close to the upper limiting pin, and when the detection table reaches the upper limiting pin, the first displacement sensor returns to zero, which is thickness calibration;
the detection piece to be detected comprises
Moving out the standard component through an external device after the calibration is finished, and returning the detection table to a middle position;
and (5) repeating the actions from the step two to the step four in the calibration to obtain the numerical values of the first displacement sensor and the second displacement sensor, so that whether the inner arc and the thickness of the piece to be detected meet the standard or not can be detected.
By adopting the technical scheme, the standard part is firstly used for calibration, then the part to be detected is detected, the difference between the part to be detected and the standard part can be obtained by obtaining the detected numerical value, and whether the part to be detected meets the standard or not can be judged.
The invention has the beneficial effects that:
1. the device has the advantages of simple structure, high detection precision, good repeatability, high detection efficiency, stable measurement result, no influence of system abrasion in the whole detection process, simple and good operation of the detection method, strong practicability and suitability for large-scale application.
2. The driving device is used for driving the detection platform to rotate to be continuously close to the first displacement sensor in the thickness detection assembly and the second displacement sensor in the inner arc detection assembly, so that the difference value between the thickness of the to-be-detected part and the thickness of the standard part and the inner arc is obtained, whether the to-be-detected part meets the standard or not can be determined, the data of the thickness and the inner arc of each to-be-detected part is not required to be measured every time, the standard part is calibrated periodically, and the equipment can be in a stable state.
3. And a plurality of first displacement sensors and second displacement sensors are arranged to carry out multi-point measurement on the inner cambered surface and the outer cambered surface of the piece to be measured, so that the geometric error of the piece to be measured can be comprehensively evaluated conveniently.
4. Set up elasticity splint and press from both sides tight rubber piece respectively in the relative both sides of examining test table, steadily compress tightly standard component and piece to be measured on examining test table location limit and outer cambered surface, not only improve the stability of the piece to be measured when examining test table rotation, promote the repeatability and the accuracy of testing result simultaneously.
5. The arranged middle position is convenient for normal feeding, conveying, calibrating and measuring of the standard part and the part to be measured, and then outputting the standard part and the part to be measured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic diagram of an exploded view from another perspective of the present invention
FIG. 3 is a schematic view of the connection structure of the test platform and the driving assembly according to the present invention.
Fig. 4 is a schematic structural view of a thickness detection assembly according to the present invention.
FIG. 5 is a schematic view of the structure of the support plate of the present invention.
Fig. 6 is a schematic structural view of an inner arc detecting assembly according to the present invention.
In the figure, 1, a support plate; 2. detecting the rotary supporting seat; 3. a detection table; 4. a thickness detection assembly; 41. a first displacement sensor; 42. a thickness detection stand; 43. a fixed plate of the displacement sensor; 5. a drive assembly; 51. a first cylinder; 52. detecting a rotating cylinder block; 6. an inner arc detection assembly; 61. a second displacement sensor; 62. an inner arc detection stand; 63. a second displacement sensor fixing plate; 7. a circular hole; 8. a first connecting plate; 9. a pinch plate pin; 10. a pressure spring; 11. an elastic splint; 12. a second connecting plate; 13. A second air cylinder; 14. clamping the rubber block; 15. a supporting base; 16. an upper limit pin; 17. applying a hydraulic buffer; 18. a lower limit pin; 19. a lower hydraulic buffer; 20. a third air cylinder; 21. a sleeve; 22. a rotating shaft; 23. and (4) standard parts.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the embodiment, a drum brake pad thickness and inner arc detection device, as shown in fig. 1, 2, 4, and 5, comprises a support plate 1, a detection rotary support base 2 is fixed on the support plate 1, a detection platform 3 is rotatably connected on the detection rotary support base 2, a thickness detection assembly 4 is arranged above the detection platform 3, the thickness detection assembly 4 comprises a thickness detection stand 42, the thickness detection stand 42 is perpendicular to the support plate 1, a first displacement sensor fixing plate 43 is vertically fixed on the thickness detection stand 42, the number of the first displacement sensor fixing plates 43 is 2, the first displacement sensors 41 are attached and fixed on the first displacement sensor fixing plates 43, the detection heads of the first displacement sensors 41 face the detection platform 3, the axial extension lines of the detection heads of all the first displacement sensors 41 are fixed to be crossed with the same axis, when the detection platform 3 rotates to reach an upper limit pin 16, this axis coincides with the axis that detects 3 extrados of platform, and the first 41 detection head of displacement sensor is perpendicular to detects 3 extrados of platform this moment, and the quantity of a displacement sensor fixed plate 43 is 2 simultaneously, all is provided with 2 displacement sensor 41 on every displacement sensor fixed plate 43, sets up a plurality of displacement sensor 41, is convenient for carry out the comprehensive evaluation to the piece shape error that awaits measuring through the multiple spot measurement.
As shown in fig. 1, 2 and 6, an inner arc detection assembly 6 fixed below the support flat plate 1 is arranged below the detection table 3 and comprises an inner arc detection vertical frame 62, the inner arc detection vertical frame 62 is fixed below the support flat plate 1, a second displacement sensor fixing plate 63 is vertically fixed on the inner arc detection vertical frame 62, a second displacement sensor 61 is attached and fixed on the second displacement sensor fixing plate 63, the number of the second displacement sensor fixing plates 63 is 3, the number of the second displacement sensors 61 on each second displacement sensor fixing plate 63 is 3, the number of the second displacement sensors 61 is 9, three groups of data can be obtained in the transverse direction and the longitudinal direction of the inner arc of the piece to be detected, and the size and the shape error of the inner arc of the piece to be detected can be comprehensively evaluated through multi-point measurement; the detection heads of the second displacement sensors 61 face the detection table 3, the axial reverse extension lines of the detection heads of all the second displacement sensors 61 are fixedly crossed on the same axis, when the detection table 3 rotates to reach the lower limit pin 18, the axis is overlapped with the axis determined by the extrados of the detection table 3, and the detection heads of the second displacement sensors 61 are perpendicular to the extrados of the detection table 3, so that the accuracy of the measurement result is ensured.
As shown in fig. 1-3, the driving assembly 5 includes a first cylinder 51, the first cylinder 51 is hinged to the bottom surface of one end of the detection table 3, the first cylinder 51 is fixed on the detection rotary cylinder seat 52, the detection rotary cylinder seat 52 is located below the detection table 3 and fixed below the support flat plate 1, the end part of a piston rod of the first cylinder 51 is hinged to a first connecting piece, the other end of the first connecting piece is hinged to the bottom surface of the detection table 3, meanwhile, another connecting piece two is fixed at the tail end of the first cylinder 51 and hinged to the detection rotary cylinder seat 52, the top end and the bottom end of the first cylinder 51 are both in a hinged state, the flexibility of the first cylinder 51 is greatly improved, and the driving detection table 3 is smooth in rotation.
As shown in fig. 2-3, a plurality of circular holes 7 are formed in the detection table 3, each detection head of the second displacement sensor 61 respectively points to each circular hole 7 in a one-to-one correspondence manner, and the circular holes 7 are matched with the detection heads of the second displacement sensor 61 one by one, so that the inner arc of a to-be-detected piece on the detection table 3 can be conveniently detected.
As shown in fig. 2, 3 and 5, a first connecting plate 8 is fixed on a detection table 3 close to a detection rotary supporting seat 2, a first connecting plate 8 is provided with a first clamping plate pin 9, a pressure spring 10 is sleeved on the first clamping plate pin 9, an elastic clamping plate 11 is sleeved outside the pressure spring 10, the elastic clamping plate 11 is driven by the elasticity of the pressure spring 10 to be close to the first connecting plate 8, a second connecting plate 12 is vertically fixed on the side edge of the detection table 3 opposite to the elastic clamping plate 11, a second air cylinder 13 is fixed on the second connecting plate 12, a clamping rubber block 14 is fixed on the piston rod of the second air cylinder 13, the clamping rubber block 14 faces the detection table 3, when a standard component 23 or a detection component is placed on the detection table 3, the piston rod of the second air cylinder 13 extends out, the clamping rubber block 14 is driven to continuously close the standard component 23 or the to-be-detected component to the elastic clamping plate 11, the elastic clamping plate 11 and the first connecting plate 8 are driven by the spring elasticity to be close to each other, the standard component 23 and the to-be-detected can be stably pressed on the positioning edge and the outer arc surface of the detection table 3, the accuracy of positioning and measuring results is guaranteed, and meanwhile, the situation that the to-be-measured piece moves when the detection table 3 rotates to cause inaccurate measuring results is avoided.
As shown in fig. 3-5, a support seat 15 is fixed on a support plate 1 close to the side of a detection platform 3 of a detection rotary support seat 2, an upper limit pin 16 and an upper oil pressure buffer 17 are fixed at the top end of the support seat 15, the upper limit pin 16 and the upper oil pressure buffer 17 face the detection platform 3, a detection head of a first displacement sensor is closer to the detection platform 3 than the upper limit pin 16, a lower limit pin 18 and a lower oil pressure buffer 19 are fixed in the support plate 1 at the side of a first cylinder 51, the lower limit pin 18 and the lower oil pressure buffer 19 are both located below the detection platform 3, a detection head of a second displacement sensor 61 is higher than the lower limit pin 18, the upper limit pin 16 and the lower limit pin 18 are located at the highest point and the lowest point where the driving component 5 drives the detection platform 3 to overturn, and are also located points for measuring the thickness and the inner arc of a piece to be detected on the detection platform 3, the upper limit pin 16 and the lower limit pin 18 are both provided with the upper oil pressure buffer 17 and the lower oil pressure buffer 19, the buffer deceleration function is realized before the detection table 3 reaches the positioning point, so that the sensor is protected from impact, and the measurement result is stabilized.
As shown in fig. 3-5, a third air cylinder 20 is fixed on the support plate 1 between the support seat 15 and the thickness detection stand 42, the third air cylinder 20 is located above the lower limit pin 18 and the lower hydraulic buffer 19, and when a piston rod of the third air cylinder 20 extends out, the detection table 3 is supported, and at this time, the middle position is used for facilitating normal feeding and conveying of the standard component 23 and the component to be detected and outputting of the standard component and the component to be detected after calibration and measurement.
A detection method of a drum brake pad thickness and inner arc detection device comprises the following steps: comprises a standard part 23 for calibrating and detecting a to-be-detected part, wherein the standard part 23 comprises
Starting a first air cylinder 51, rotating the detection table 3 and enabling the detection table to be positioned above the supporting flat plate 1, starting a third air cylinder 20, enabling a piston rod of the third air cylinder 20 to extend out, retracting the first air cylinder 51, and enabling the detection table 3 to fall onto the piston rod of the third air cylinder 20, wherein the middle position is;
secondly, placing the standard part 23 on the detection table 3 through an external device, starting the second air cylinder 13, driving the clamping rubber block 14 to push the standard part 23, and stably pressing the standard part 23 on the positioning edge and the outer arc surface of the detection table 3;
thirdly, retracting piston rods of the first air cylinder 51 and the third air cylinder 20, driving the detection table 3 to rotate and fall by the third air cylinder 20, and enabling the second displacement sensor 61 to return to zero after the detection table 3 reaches the lower limit pin 18, wherein the inner arc calibration is performed;
fourthly, after the inner arc calibration is finished, the first driving cylinder 51 continuously pushes the detection platform 3 to rotate, so that the detection platform 3 is continuously close to the upper limiting pin 16, and when the detection platform 3 reaches the upper limiting pin 16, the first displacement sensor 41 returns to zero, which is thickness calibration;
detecting the object to be detected comprises
After the calibration is finished, the standard part 23 is moved out through an external device, so that the detection table 3 returns to a middle position;
and (5) repeating the actions from the step two to the step four in the calibration to obtain the numerical values of the first displacement sensor 41 and the second displacement sensor 61, and detecting whether the inner arc and the thickness of the piece to be detected meet the standard or not.
The method comprises the steps of firstly calibrating and zeroing the standard part 23, then measuring the part to be measured, determining whether the part to be measured meets the standard or not by the difference value between the thickness of the part to be measured and the inner arc of the standard part 23, and periodically calibrating the standard part without measuring the data of the thickness and the inner arc of each part to be measured.
Claims (16)
1. The utility model provides a drum brake block thickness and inner arc detection device, includes and supports dull and stereotyped (1), its characterized in that: it detects rotary supporting seat (2) to be fixed with on support flat board (1), it has the arc surface to detect bench (3) to detect rotary supporting seat (2) go up the rotation connection, it is provided with thickness detection subassembly (4) to detect bench (3) top, thickness detection subassembly (4) include displacement sensor (41), displacement sensor (41) detect the head orientation and detect bench (3), displacement sensor (41) are fixed in on thickness detection grudging post (42), thickness detection grudging post (42) vertical fixation is on support flat board (1), it is provided with drive assembly (5) of fixing in support flat board (1) lower part to detect bench (3) below, drive assembly (5) drive detects bench (3) rotation and is close to or keeps away from displacement sensor (41).
2. The drum brake caliper and inner arc detection device of claim 1, wherein: detect platform (3) and rotate around rotation axis (22) on fixed rotation supporting seat (2), it is provided with the inner arc determine module (6) of fixing in supporting dull and stereotyped (1) lower part to detect platform (3) below, inner arc determine module (6) include displacement sensor two (61), platform (3) are detected to the detection head orientation of displacement sensor two (61), displacement sensor two (61) are fixed in the inner arc and detect on grudging post (62), inner arc detects grudging post (62) and is fixed in and supports under dull and stereotyped (1), drive assembly (5) drive detects that platform (3) is rotatory to be close to or keep away from displacement sensor two (61).
3. The drum brake caliper and inner arc detection device of claim 1, wherein: thickness detects grudging post (42) and support flat board (1) perpendicular, be fixed with displacement sensor fixed plate (43) on thickness detects grudging post (42) perpendicularly, displacement sensor (41) laminating is fixed in on displacement sensor fixed plate (43).
4. The drum brake caliper and inner arc detection device of claim 1 or 3, wherein: the number of the first fixed plates (43) of the displacement sensors is not less than 2.
5. The drum brake caliper and inner arc detection device of claim 2, wherein: the inner arc detection stand (62) is located thickness detection stand (42) below and is fixed in support flat plate (1) below, two displacement sensor fixed plates (63) are vertically fixed on the inner arc detection stand (62), and two displacement sensor (61) are attached and fixed on two displacement sensor fixed plates (63).
6. The drum brake caliper and inner arc detection device of claim 5, wherein: the number of the second displacement sensor fixing plates (63) is not less than 3, and the number of the second displacement sensors (61) on each second displacement sensor fixing plate (63) is not less than 3.
7. The drum brake caliper and inner arc detection device of claim 2, wherein: a plurality of round holes (7) are formed in the detection platform (3), and the detection heads of the second displacement sensors (61) respectively point to the round holes (7) in a one-to-one correspondence mode.
8. The drum brake caliper and inner arc detection device of claim 7, wherein: the axes of the detection heads of the second displacement sensors (61) are opposite in extension line and intersect with the same axis, and when the detection platform (3) reaches the lower limit pin (18), the axis is overlapped with the axis of the extrados of the detection platform (3).
9. The drum brake caliper and inner arc detection device of claim 8, wherein: the driving assembly (5) comprises a first air cylinder (51), the first air cylinder (51) is hinged to the bottom surface of one end of the detection table (3), the first air cylinder (51) is fixed on a detection rotary air cylinder seat (52), and the detection rotary air cylinder seat (52) is located below the detection table (3) and fixed below the support flat plate (1).
10. The drum brake caliper and inner arc detection device of claim 3, wherein: be close to and detect rotary supporting seat (2) it is fixed with connecting plate (8) on platform (3) to examine, be provided with on connecting plate (8) splint round pin (9), the cover is equipped with pressure spring (10) on splint round pin (9), pressure spring (10) overcoat is equipped with and is fixed with flexible splint (11), the elasticity drive elasticity splint (11) of pressure spring (10) are close to each other with connecting plate (8).
11. The drum brake caliper and inner arc detection device of claim 10, wherein: the side of examining test table (3) relative elasticity splint (11) is fixed with connecting plate two (12) perpendicularly, be fixed with cylinder two (13) on connecting plate two (12), be fixed with on the piston rod of cylinder two (13) and press from both sides tight block rubber (14), press from both sides tight block rubber (14) orientation and examine test table (3).
12. The drum brake caliper and inner arc detection device of claim 11, wherein: be close to and detect rotatory supporting seat (2) be fixed with supporting seat (15) on the support flat plate (1) of examining test table (3) side, supporting seat (15) top is fixed with spacer pin (16) and last pressure buffer (17), go up spacer pin (16) and go up pressure buffer (17) orientation and examine test table (3), displacement sensing one (41) examine the head and be close to and examine test table (3) than last spacer pin (16).
13. The drum brake caliper and inner arc detection device of claim 11, wherein: a lower limiting pin (18) and a lower hydraulic buffer (19) are fixed below the supporting flat plate (1) on the side of the first air cylinder (51), the lower limiting pin (18) and the lower hydraulic buffer (19) are both located below the detection table (3), and a detection head of the second displacement sensor (61) is higher than the lower limiting pin (18).
14. The drum brake caliper and inner arc detection device of claim 12, wherein: and a third air cylinder (20) is fixed on the support flat plate (1) between the support seat (15) and the thickness detection stand (42), and the third air cylinder (20) is positioned above the lower limit pin (18) and the lower oil buffer (19).
15. The drum brake caliper and inner arc detection device of claim 3, wherein: the lower end of one side of the detection table (3) is fixed with a sleeve (21), and the sleeve (21) is sleeved on a rotating shaft (22) which is rotatably connected to the detection rotary supporting seat (2).
16. A method for detecting the thickness and the inner arc of a drum brake block is characterized by comprising the following steps: comprises a standard part (23) for calibrating and detecting a to-be-detected part, wherein the standard part (23) comprises
Starting a first cylinder (51), rotating a detection platform (3) and enabling the detection platform to be positioned above a support flat plate (1), starting a third cylinder (20), enabling a piston rod of the third cylinder (20) to extend out, retracting the first cylinder (51), and enabling the detection platform (3) to fall onto the piston rod of the third cylinder (20), wherein the middle position is;
secondly, placing the standard part (23) on the detection table (3) through an external device, starting a second air cylinder (13), driving a clamping rubber block (14) to push the standard part (23), and stably pressing the standard part (23) on a positioning edge and an outer arc surface of the detection table (3);
retracting piston rods of the first air cylinder (51) and the third air cylinder (20), driving the detection table (3) to rotate and fall by the third air cylinder (20), and enabling the second displacement sensor (61) to return to zero after the detection table (3) reaches the lower limit pin (18), wherein inner arc calibration is carried out;
after the inner arc is calibrated, the first driving cylinder (51) continuously pushes the detection platform (3) to rotate, so that the detection platform (3) is continuously close to the upper limiting pin (16), and when the detection platform (3) reaches the upper limiting pin (16), the first displacement sensor (41) returns to zero, which is thickness calibration;
the detection piece to be detected comprises
After the calibration is finished, the standard part (23) is moved out through an external device, so that the detection table (3) returns to a middle position;
and (2) repeating the actions from the first step to the second step in the calibration procedure to obtain the numerical values of the first displacement sensor (41) and the second displacement sensor (61), and comparing the numerical values with calibration values to detect whether the inner arc and the thickness of the piece to be detected meet the standard or not.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210097311.9A CN114791275A (en) | 2022-01-27 | 2022-01-27 | Drum brake pad thickness and inner arc detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210097311.9A CN114791275A (en) | 2022-01-27 | 2022-01-27 | Drum brake pad thickness and inner arc detection device and detection method |
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Cited By (1)
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