A caliper piston defect detection device and a control method thereof

Abstract

The application discloses a caliper piston defect detection device, and belongs to the technical field of detection devices, and has the technical scheme as follows: a mounting frame is provided with a workbench; a detection base is provided with a placing bin, detection oil is input into the placing bin; a positioning device; a pressure head is installed on the mounting frame through a cylinder; a connecting pipe is installed on the pressure head; a conveying device is connected with the connecting pipe; a heating device is installed on the detection base and used for heating the detection oil; a liquid level detection device is installed on the detection base and connected with the bottom of the placing bin; the periphery of the connecting pipe is provided with a first sealing gasket, and the periphery of the pressure head is provided with a second sealing gasket. The application provides a caliper piston defect detection device and a control method thereof, so that the caliper piston can be detected under a high-temperature state, the working environment of the caliper piston is simulated, and defects on the caliper piston can be detected under high temperature.

Description

Technical Field

[0001] This application belongs to the technical field of detection devices, and in particular relates to a caliper piston defect detection device and its control method. Background Technology

[0002] Brake calipers are one of the core components of the braking system, widely used in vehicles. They generate braking force through the interaction between the caliper and the brake disc. The caliper is typically fixed to the vehicle frame, while the brake disc is fixed to the wheel. The brake caliper consists of a piston and brake pads, which slide within a support under the action of pressurized fluid, thereby pushing the brake pads against the brake disc to generate braking force through friction. The machining of the caliper piston requires processes such as hot-end treatment and heat treatment, which can introduce cracks and defects. Currently, X-ray inspection is generally used for defect detection, but this method is difficult to implement, requires specific facilities, and carries the risk of injury from X-rays, as well as requiring a relatively large initial investment.

[0003] A Chinese patent with publication number CN204964152U discloses a device for testing the air tightness of a piston assembly inside a parking caliper. The device includes a horizontal plate, a support column, a base plate, a cylinder, and a leak detector. The support column is fixed to the base plate, and the horizontal plate is fixed to the support column. A cylinder is fixed above the horizontal plate, and a pressure head is fixed below the horizontal plate; the cylinder is connected to the pressure head. A base is fixed to the base plate, and the center lines of the base, base plate, and pressure head are aligned. A small hole is formed in the base, and a through hole is formed in the base plate. The small hole communicates with the through hole, and an air tube is placed inside the small hole, connecting to an air source, the leak detector, and the base. A testing handle is provided outside the testing device.

[0004] The aforementioned detection device detects defects in the caliper piston by checking for air tightness. However, when the crack is small, it cannot be effectively detected by changing the air pressure difference inside and outside the caliper piston. Furthermore, the caliper generates high temperatures during use, which will also affect the continued expansion of cracks on the caliper piston, eventually leading to the entire caliper piston cracking. Summary of the Invention

[0005] The purpose of this application is to address the aforementioned technical problems by providing a caliper piston defect detection device and its control method, which enables the caliper piston to be detected under high temperature conditions, simulating the working environment of the caliper piston, so that defects on the caliper piston can be detected at high temperatures.

[0006] This application provides a caliper piston defect detection device, including:

[0007] The mounting rack is equipped with a workbench;

[0008] The testing base is equipped with a placement chamber into which testing oil is introduced;

[0009] Positioning devices are distributed within the detection base;

[0010] The pressure head is mounted on the mounting bracket via a cylinder;

[0011] The connecting pipe is installed on the pressure head and is aligned with the axis of the positioning device;

[0012] A conveying device for extracting and filling gas, the conveying device being connected to a connecting pipe;

[0013] A heating device, installed on the testing base, is used to heat the testing oil.

[0014] A liquid level detection device is installed on a detection base and connected to the bottom of the placement chamber to detect changes in the liquid level in the placement chamber.

[0015] The detection base is mounted on the workbench, a first sealing gasket is provided around the periphery of the connecting pipe, and a second sealing gasket is provided around the periphery of the pressure head.

[0016] Several caliper piston workpieces are placed in the placement chamber inside the testing base, with their openings facing upwards. The workpiece's axis is aligned with the caliper using a positioning device. The testing oil in the placement chamber is heated to a predetermined value by a heating device. When the workpiece is simultaneously under high temperature, high pressure, or low pressure, its defects are easily amplified, ultimately leading to cracking and scrapping of the workpiece. Then, a cylinder drives the pressure head to press down, forming a sealed cavity between the first sealing gasket, connecting pipe, and workpiece. The second sealing gasket, pressure head, and testing base are then sealed to ensure high sealing performance of the placement chamber. A connecting pipe connects to a conveying device, which controls the rise and fall of the air pressure inside the workpiece, keeping it under high or low pressure. The pressure difference between the inside and outside of the workpiece indicates fluctuations in the level of the testing oil. After detection by the level detection device, it is determined whether there are defects in the workpiece inside the testing base. The air pressure inside the workpiece first rises and then falls. When a defect is found, the workpiece is opened after testing, and testing oil is found inside, making it easy to identify the specific defective workpiece.

[0017] Furthermore, the positioning device includes:

[0018] The positioning frame is arc-shaped;

[0019] The clamping block is movably mounted on the positioning frame;

[0020] The movable base is movably mounted on the positioning frame.

[0021] The first spring is placed between the clamping block and the moving seat;

[0022] The pusher is connected to the detection base via a cylinder;

[0023] An adjustment mechanism is used to adjust the distance between the clamping block and the moving seat;

[0024] The movable seat is provided with a telescopic groove, the clamping block is provided with a telescopic column adapted to the movable seat, the movable seat is provided with an inclined guide rail, and the push seat is provided with an inclined guide groove adapted to the inclined guide rail.

[0025] The positioning frame has several arc-shaped structures distributed together, with gaps between them to facilitate the detection of oil flow. The push seat is moved by a cylinder, causing the inclined guide rail and inclined guide groove to interact and move the moving seat. The first spring abuts against the clamping block, and the workpiece is pre-clamped by the clamping block. The clamping force varies depending on the diameter of the workpiece placed in the positioning frame. The moving seat has a limited distance. The distance between the clamping block and the moving seat is adjusted by an adjustment mechanism so that when the clamping block clamps workpieces of different diameters, the compression degree of the first spring is about the same, ensuring that the difference in clamping force is small.

[0026] Furthermore, the adjustment mechanism includes:

[0027] The adjusting seat abuts against the first spring;

[0028] The first lead screw is adapted to the adjustment seat;

[0029] A drive unit is used to drive the first lead screw to rotate;

[0030] The movable seat is provided with an adjustment groove, and the adjustment seat extends out of the movable seat through the adjustment groove.

[0031] The first lead screw is driven to rotate by the drive device, so that the adjusting seat moves in the adjusting groove. Different positions of the adjusting seat are suitable for clamping workpieces of different diameters, so that the clamping force is the same or has a small difference.

[0032] Furthermore, the liquid level detection device includes:

[0033] Test socket;

[0034] Several floats are provided and evenly distributed on the detection seat along the direction of gravity, and the floats are hinged to the detection seat;

[0035] The slider is mounted on the hinge shaft of the float.

[0036] The sliding resistor is arc-shaped and adapted to the slider.

[0037] The float is installed on the detection seat. After the float comes into contact with the detection oil, it floats upward due to buoyancy. During the rotation, the slider moves on the sliding resistor. All the sliding resistors are connected in series. When the liquid level rises, the resistance decreases. The fluctuation of the liquid level rise and fall is monitored by detecting the change in the magnitude of the detection current.

[0038] Furthermore, the adjusting mechanism is provided with a first cavity, the first cavity is provided with a first piston, the first piston is connected to the adjusting seat, the liquid level detection device is provided with a second cavity, the second cavity is provided with a second piston, the second piston is connected to the detection seat, and the first cavity and the second cavity are connected.

[0039] When adjusting the adjusting seat through the adjusting mechanism, the changes in the first chamber and the first piston are transmitted to the second chamber and the second piston. When the diameter of the workpiece is large, the liquid level is low when the workpiece is not placed. By moving the detection seat downward, it is ensured that the liquid level detection device can detect the liquid level signal. If the liquid level detection device cannot detect the liquid level signal, it is necessary to add detection oil to the placement chamber to ensure that the level of detection oil is suitable for different workpiece diameters.

[0040] Furthermore, the heating device includes:

[0041] The heating chamber is equipped with a liquid inlet, a liquid outlet, a circulation inlet, and a circulation outlet.

[0042] The heating wire is placed in the heating chamber;

[0043] The circulation mechanism is installed at the circulation outlet;

[0044] The inlet and outlet are connected to the oil source, and the circulation inlet and outlet are connected to the storage compartment.

[0045] The heating chamber and heating wire are used to heat the test oil. The inlet and outlet are connected to the oil source. When there is too much or too little test oil in the placement chamber, the liquid level of the test oil in the placement chamber is adjusted through the inlet and outlet. The test oil in the heating chamber and the placement chamber are circulated through the circulation mechanism, so that the test oil can be heated up quickly and stably.

[0046] Furthermore, the circulation mechanism includes:

[0047] Circulation chamber;

[0048] One-way valve plates are respectively placed between the circulation chamber and the heating chamber, and between the circulation chamber and the placement chamber;

[0049] The circulating piston is adapted to the circulating chamber.

[0050] The drive block is connected to the circulating piston;

[0051] A circulating motor, the output shaft of which is mounted and connected to a drive block;

[0052] The second spring is placed between the circulating piston and the circulating chamber;

[0053] The drive block is provided with a guide slope and a vertical slope, and the circulating piston is provided with an abutment part, which is adapted to both the guide slope and the vertical slope.

[0054] The detection oil in the heating chamber is drawn out and discharged into the placement chamber through the circulation chamber, circulation piston, and one-way valve plate. The circulation motor drives the drive block to rotate. When the drive block rotates, the abutment part moves on the guide slope and vertical slope. When the abutment block moves on the guide slope, the circulation chamber draws out the oil. When the abutment block is in the corresponding position on the vertical slope, the second spring pops out the circulation piston, which pressurizes the detection oil in the circulation chamber and allows the detection oil to spread quickly in the placement chamber.

[0055] This application also provides a control method for a caliper piston defect detection device, the specific steps of which include:

[0056] S1, Adjust the positioning device, use the drive device to drive the first lead screw to rotate, and adjust the distance between the clamping block and the moving seat;

[0057] S2, place the workpiece in the positioning frame, push the pusher to move by the cylinder, clamp the workpiece in the positioning frame, and control the temperature of the detection oil in the placement chamber to be greater than W by the heating device;

[0058] S3 uses a cylinder to press down the pressure head, and uses a conveying device and connecting pipe to extract and fill the gas in the workpiece, so that the gas pressure in the workpiece is in two states: greater than P1 and less than P2. These states are detected by a liquid level detection device, and an alarm is triggered when the liquid level detection device detects a change.

[0059] By heating the testing oil and then transferring the heat to the workpiece, the workpiece is placed in a high-temperature testing environment. By sequentially applying and withdrawing pressure to the workpiece, defects are detected under the action of internal and external pressure differences. This allows for workpiece testing in a high-temperature environment, improving the accuracy of defect detection and making the testing more convenient, stable, and safe.

[0060] The beneficial effects of this application are:

[0061] 1. The testing oil in the placement chamber is heated to a predetermined value by a heating device, and the pressure head is driven down by a cylinder. A sealed cavity is formed between the first sealing gasket, the connecting pipe and the workpiece. The second sealing gasket, the pressure head and the testing base are sealed to give the placement chamber a high degree of airtightness. The connecting pipe is connected to a conveying device, and the conveying device controls the rise and fall of the air pressure in the workpiece.

[0062] 2. After inspection by the liquid level detection device, it is determined whether there are defects in the workpiece inside the detection base. The air pressure inside the workpiece first rises and then falls. When there are defects in the workpiece, the detection oil will be found inside the workpiece after inspection, which makes it easier to identify the specific defective workpiece.

[0063] 3. The first lead screw is driven to rotate by the drive device, so that the adjusting seat moves in the adjusting groove. The different positions of the adjusting seat are suitable for clamping workpieces of different diameters, so that the clamping force is the same or the difference is small. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of the detection device of this application;

[0065] Figure 2 This is a cross-sectional structural schematic diagram of the detection device of this application;

[0066] Figure 3 This is a partial structural schematic diagram of the detection seat of this application;

[0067] Figure 4 This is a schematic diagram of the structure of the testing base of this application;

[0068] Figure 5 For the purposes of this application Figure 2 A magnified view of point A;

[0069] Figure 6 For the purposes of this application Figure 2 A magnified view of point B;

[0070] Figure 7 For the purposes of this application Figure 4 A magnified view of point C;

[0071] In the attached diagram, the following labels are used: 100, mounting bracket; 110, workbench; 200, testing base; 201, placement compartment; 300, positioning device; 310, positioning frame; 320, clamping block; 321, telescopic column; 330, movable seat; 331, telescopic groove; 332, inclined guide rail; 333, adjusting groove; 340, first spring; 350, push seat; 351, inclined guide groove; 360, adjusting mechanism; 361, adjusting seat; 362, first lead screw; 363, driving device; 364, first cavity; 365, first piston; 400, pressure head; 410, connecting pipe; 420, first sealing gasket; 430. Second sealing gasket; 500, heating device; 510, heating chamber; 511, liquid inlet; 512, liquid outlet; 513, circulation inlet; 514, circulation outlet; 520, heating wire; 530, circulation mechanism; 531, circulation chamber; 532, one-way valve plate; 533, circulation piston; 534, drive block; 535, circulation motor; 536, second spring; 537, guide slope; 538, vertical slope; 539, contact part; 600, liquid level detection device; 610, detection seat; 620, float; 630, slider; 640, sliding resistor; 650, second chamber; 660, second piston. Detailed Implementation

[0072] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0073] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0074] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0075] Example 1:

[0076] like Figure 1 , Figure 2 , Figure 4As shown, this application embodiment provides a caliper piston defect detection device, including:

[0077] Mounting frame 100, equipped with workbench 110;

[0078] The detection base 200 is provided with a placement chamber 201, into which detection oil is introduced;

[0079] Positioning devices 300 are distributed within the detection base 200;

[0080] The pressure head 400 is mounted on the mounting bracket 100 via a cylinder;

[0081] The connecting pipe 410 is installed on the pressure head 400 and is aligned with the axis of the positioning device 300;

[0082] A conveying device for extracting and filling gas, the conveying device being connected to the connecting pipe 410;

[0083] Heating device 500 is installed on detection base 200 and is used to heat the detection oil.

[0084] A liquid level detection device 600 is installed on the detection base 200 and connected to the bottom of the placement chamber 201, and is used to detect changes in the liquid level in the placement chamber 201.

[0085] The detection base 200 is mounted on the workbench 110, the periphery of the connecting pipe 410 is provided with a first sealing gasket 420, and the periphery of the pressure head 400 is provided with a second sealing gasket 430.

[0086] Several caliper piston workpieces are placed in the placement chamber 201 within the testing base 200, with their openings facing upwards. The positioning device 300 aligns the workpiece's axis with the caliper piston. The heating device 500 heats the testing oil in the placement chamber 201 to a predetermined value. When the workpiece is simultaneously under high temperature, high pressure, or low pressure, its defects are easily amplified, ultimately leading to cracking and scrapping. Then, the cylinder drives the pressure head 400 to press down, forming a sealed cavity between the first sealing gasket 420, the connecting pipe 410, and the workpiece. The second sealing gasket 430, the pressure head 400, and the workpiece are then connected. The detection bases 200 are sealed together, giving the placement chamber 201 a high degree of airtightness. It is connected to a conveying device through a connecting pipe 410. The conveying device controls the rise and fall of the air pressure inside the workpiece, keeping the workpiece in a high-pressure or low-pressure state. The fluctuation of the detection oil level is judged by the pressure difference between the inside and outside of the workpiece. After detection by the liquid level detection device, it is determined whether there is a defect in the workpiece inside the detection base 200. The air pressure inside the workpiece first rises and then falls. When there is a defect in the workpiece, the detection oil will be found inside the workpiece after the detection is completed, making it easy to identify the specific defective workpiece.

[0087] Example 2:

[0088] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, this application embodiment provides a caliper piston defect detection device. In addition to the above-mentioned technical features, the positioning device 300 further includes:

[0089] Positioning bracket 310 is arc-shaped;

[0090] Clamping block 320 is movably mounted on positioning frame 310;

[0091] The movable seat 330 is movably mounted on the positioning frame 310;

[0092] The first spring 340 is placed between the clamping block 320 and the movable seat 330;

[0093] The pusher 350 is connected to the detection base 200 via a cylinder;

[0094] The adjusting mechanism 360 is used to adjust the distance between the clamping block 320 and the moving seat 330;

[0095] The movable seat 330 is provided with a telescopic groove 331, the clamping block 320 is provided with a telescopic column 321 adapted to the movable seat 330, the movable seat 330 is provided with a slanted guide rail 332, and the push seat 350 is provided with a slanted guide groove 351 adapted to the slanted guide rail 332.

[0096] The positioning frame 310 has several arc-shaped structures distributed together, with gaps between them to facilitate the detection of oil flow. The push seat 350 is moved by the cylinder, causing the inclined guide rail 332 and inclined guide groove 351 to interact, which in turn moves the moving seat 330. The first spring 340 abuts against the clamping block 320, and the workpiece is pre-clamped by the clamping block 320. The clamping force varies depending on the diameter of the workpiece placed in the positioning frame 310. The moving seat 330 has a limited distance. The distance between the clamping block 320 and the moving seat 330 is adjusted by the adjusting mechanism 360 so that when the clamping block 320 clamps workpieces of different diameters, the compression degree of the first spring 340 is about the same, ensuring that the difference in clamping force is small.

[0097] Furthermore, the adjustment mechanism 360 includes:

[0098] The adjusting seat 361 abuts against the first spring 340;

[0099] The first lead screw 362 is adapted to the adjusting seat 361;

[0100] Drive device 363 is used to drive the first lead screw 362 to rotate;

[0101] The movable seat 330 is provided with an adjustment groove 333, and the adjustment seat 361 extends out of the movable seat 330 through the adjustment groove 333.

[0102] The first lead screw 362 is driven to rotate by the drive device 363, so that the adjusting seat 361 moves in the adjusting groove 333. The different positions of the adjusting seat 361 are suitable for clamping workpieces of different diameters, so that the clamping force is the same or the difference is small.

[0103] Furthermore, the liquid level detection device 600 includes:

[0104] Detection seat 610;

[0105] A plurality of floats 620 are provided and are evenly distributed on the detection seat 610 along the direction of gravity, and the floats 620 are hinged to the detection seat 610;

[0106] Slider 630 is mounted on the hinge shaft of float 620;

[0107] The sliding resistor 640 is arc-shaped and is adapted to the slider 630.

[0108] The float 620 is installed on the detection seat 610. After the float 620 comes into contact with the detection oil, it floats upward due to buoyancy. During the rotation, the slider 630 moves on the sliding resistor 640. All the sliding resistors 640 are connected in series. When the liquid level rises, the resistance decreases. The fluctuation of the liquid level rise and fall is monitored by detecting the change in the magnitude of the current.

[0109] Furthermore, the adjusting mechanism 360 is provided with a first cavity 364, the first cavity 364 is provided with a first piston 365, the first piston 365 is connected to the adjusting seat 361, the liquid level detection device 600 is provided with a second cavity 650, the second cavity 650 is provided with a second piston 660, the second piston 660 is connected to the detection seat 610, and the first cavity 364 and the second cavity 650 are connected.

[0110] When the adjusting seat 361 is adjusted by the adjusting mechanism 360, the changes in the first cavity 364 and the first piston 365 are transmitted to the second cavity 650 and the second piston 660. When the diameter of the workpiece is large, the liquid level is low when the workpiece is not placed. By moving the detection seat 610 downward, it is ensured that the liquid level detection device 600 can detect the liquid level signal. If the liquid level detection device 600 cannot detect the liquid level signal, it is necessary to add detection oil to the placement chamber 201 to ensure that the height of the detection oil is suitable for different workpiece diameters.

[0111] Example 3:

[0112] like Figure 4 , Figure 7 As shown, this application embodiment provides a caliper piston defect detection device. In addition to the above-mentioned technical features, the heating device 500 further includes:

[0113] The heating chamber 510 is equipped with a liquid inlet 511, a liquid outlet 512, a circulation inlet 513, and a circulation outlet 514;

[0114] Heating wire 520 is placed in heating chamber 510;

[0115] The circulation mechanism 530 is installed at the circulation outlet 514;

[0116] The inlet 511 and outlet 512 are connected to the oil source, and the circulation inlet 513 and circulation outlet 514 are connected to the placement chamber 201.

[0117] The heating chamber 510 and heating wire 520 are used to heat the test oil. The inlet 511 and outlet 512 are connected to the oil source. When there is too much or too little test oil in the placement chamber 201, the liquid level of the test oil in the placement chamber 201 is adjusted through the inlet 511 and outlet 512. The heating chamber 510 and the test oil in the placement chamber 201 are circulated through the circulation mechanism 530, so that the test oil can be heated up quickly and stably.

[0118] Furthermore, the circulation mechanism 530 includes:

[0119] Circulation chamber 531;

[0120] One-way valve plate 532 is respectively placed between circulation chamber 531 and heating chamber 510 and between circulation chamber 531 and placement chamber 201;

[0121] The circulating piston 533 is adapted to the circulating chamber 531;

[0122] Drive block 534 is connected to circulating piston 533;

[0123] The output shaft of the circulating motor 535 is mounted and connected to the drive block 534.

[0124] The second spring 536 is placed between the circulating piston 533 and the circulating chamber 531;

[0125] The drive block 534 is provided with a guide slope 537 and a vertical slope 538, and the circulating piston 533 is provided with an abutment part 539, which is adapted to both the guide slope 537 and the vertical slope 538.

[0126] The detection oil in the heating chamber 510 is extracted and discharged into the placement chamber 201 through the circulation chamber 531, circulation piston 533, and one-way valve plate 532. The circulation motor 535 is used to drive the drive block 534 to rotate. When the drive block 534 rotates, the abutment part 539 moves on the guide slope 537 and the vertical slope 538. When the abutment block moves on the guide slope 537, the circulation chamber 531 extracts the oil. When the abutment block is at the corresponding position on the vertical slope 538, the second spring 536 pops out the circulation piston 533, which pressurizes the detection oil in the circulation chamber 531 so that the detection oil can quickly diffuse in the placement chamber 201.

[0127] Example 4:

[0128] This application also provides a control method for a caliper piston defect detection device, the specific steps of which include:

[0129] S1, Adjust the positioning device 300, use the drive device 363 to drive the first lead screw 362 to rotate, and adjust the distance between the clamping block 320 and the moving seat 330;

[0130] S2, place the workpiece in the positioning frame 310, push the pusher 350 to move by the cylinder, clamp the workpiece in the positioning frame 310, and control the temperature of the detection oil in the placement chamber 201 to be greater than W by the heating device 500.

[0131] S3, the cylinder presses down the pressure head 400, and the gas inside the workpiece is extracted and filled through the conveying device and connecting pipe 410, so that the gas pressure inside the workpiece is in two states, greater than P1 and less than P2, respectively. The liquid level detection device 600 detects the change and alarms when the liquid level detection device 600 detects the change.

[0132] By heating the testing oil and then transferring the heat to the workpiece, the workpiece is placed in a high-temperature testing environment. By sequentially applying and withdrawing pressure to the workpiece, defects are detected under the action of internal and external pressure differences. This allows for workpiece testing in a high-temperature environment, improving the accuracy of defect detection and making the testing more convenient, stable, and safe.

[0133] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0134] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A caliper piston defect detection apparatus, characterized by, The utility model relates to a kind of oil liquid detection device, including: Mounting frame (100) is provided with workbench (110); Detection pedestal (200) is provided with deposit bin (201), and detection oil liquid is input in deposit bin (201); Positioning device (300) is distributed in detection pedestal (200); Press head (400) is installed on mounting frame (100) by gas cylinder; Connecting pipe (410) is installed on press head (400), and the axis of positioning device (300) is same; Conveying device is used for the extraction and filling of gas, and the conveying device is connected with connecting pipe (410); Heating device (500) is installed on detection pedestal (200), for heating detection oil liquid; Liquid level detection device (600) is installed on detection pedestal (200) and is connected with the bottom of deposit bin (201), for detecting the change of liquid level in deposit bin (201); Wherein, the detection pedestal (200) is installed on the workbench (110), the periphery of the connecting pipe (410) is provided with the first sealing gasket (420), and the periphery of the press head (400) is provided with the second sealing gasket (430); The positioning device (300) includes: Positioning frame (310) is arc-shaped; Clamping block (320) is movably installed on positioning frame (310); Moving seat (330) is movably installed on positioning frame (310); First spring (340) is placed between clamping block (320) and moving seat (330); Push seat (350) is connected with detection pedestal (200) by gas cylinder; Adjusting mechanism (360) is used for adjusting the distance between clamping block (320) and moving seat (330); Wherein, the moving seat (330) is provided with telescopic slot (331), the clamping block (320) is provided with telescopic column (321) matched with the moving seat (330), the moving seat (330) is provided with inclined guide rail (332), and the push seat (350) is provided with inclined guide slot (351) matched with the inclined guide rail (332); The adjusting mechanism (360) includes: Adjusting seat (361) is abutted with first spring (340); First lead screw (362) is matched with adjusting seat (361); Driving device (363) is used for driving first lead screw (362) to rotate; Wherein, the moving seat (330) is provided with adjusting slot (333), and the adjusting seat (361) extends to the outside of moving seat (330) through adjusting slot (333).

2. The caliper piston defect detection apparatus of claim 1, wherein The liquid level detection device (600) includes: Detection seat (610); Floating ball (620) is provided with a plurality of and evenly distributed on detection seat (610) along the direction of gravity, and the floating ball (620) is hinged to detection seat (610); Slide block (630) is installed on the hinge shaft of floating ball (620); Slide resistance (640) is arc-shaped and matched with slide block (630).

3. The caliper piston defect detection apparatus of claim 2, wherein The adjusting mechanism (360) is provided with a first cavity (364) provided with a first piston (365) connected with the adjusting seat (361), the liquid level detection device (600) is provided with a second cavity (650) provided with a second piston (660) connected with the detection seat (610), and the first cavity (364) and the second cavity (650) are connected.

4. The caliper piston defect detection apparatus of claim 3, wherein The heating device (500) comprises: a heating bin (510) provided with a liquid inlet (511), a liquid outlet (512), a circulating inlet (513) and a circulating outlet (514); a heating wire (520) arranged in the heating bin (510); a circulating mechanism (530) installed at the circulating outlet (514); wherein the liquid inlet (511) and the liquid outlet (512) are connected with an oil source, and the circulating inlet (513) and the circulating outlet (514) are connected with the placing bin (201).

5. The caliper piston defect detection apparatus of claim 4, wherein, The circulating mechanism (530) comprises: a circulating cavity (531); a one-way valve plate (532) arranged between the circulating cavity (531) and the heating bin (510) and between the circulating cavity (531) and the placing bin (201) respectively; a circulating piston (533) matched with the circulating cavity (531); a driving block (534) connected with the circulating piston (533); a circulating motor (535) with an output shaft connected with the driving block (534); a second spring (536) arranged between the circulating piston (533) and the circulating cavity (531); wherein the driving block (534) is provided with a guide inclined surface (537) and a vertical inclined surface (538), and the circulating piston (533) is provided with an abutting portion (539) matched with the guide inclined surface (537) and the vertical inclined surface (538).

6. A control method for the caliper piston defect detection device according to claim 5, characterized in that, The specific steps comprise: S1, adjusting the positioning device (300), using the driving device (363) to drive the first lead screw (362) to rotate, and adjusting the distance between the clamping block (320) and the moving seat (330); S2, placing the workpiece in the positioning frame (310), moving the push seat (350) by the air cylinder, clamping the workpiece in the positioning frame (310), and controlling the temperature of the detection oil in the placing bin (201) to be greater than W by the heating device (500); S3, lowering the pressure head (400) by the air cylinder, extracting and filling the gas in the workpiece by the conveying device and the connecting pipe (410), so that the gas pressure state in the workpiece is greater than P1 and less than P2 respectively, and the liquid level detection device (600) is used for detection, and an alarm is given when the liquid level detection device (600) detects a change.

Images