A comprehensive brake caliper testing fixture

Abstract

This utility model discloses a comprehensive brake caliper inspection tool, including a base with a positioning component for clamping the brake caliper in a placement position. Guide pin hole mounting arm inspection blocks are slidably disposed on both the left and right sides of the placement position, each block having a guide pin hole mounting arm inspection groove. A claw transverse inspection block is slidably disposed on the front side of the placement position, with a downward-facing, through-hole inspection notch at its lower part. A claw longitudinal inspection block is slidably disposed on the claw transverse inspection block, having two inspection sidewalls that fit against its front and rear sides. A piston hole inspection block connecting arm is also slidably disposed on the front side of the placement position, extending rearward and ending with a piston hole inspection block. This utility model integrates deformation detection and piston hole detection functions, eliminating the need to switch inspection equipment, thus improving production efficiency, reducing costs, and ensuring product quality.

Description

Technical Field

[0001] This utility model belongs to the field of parts structure inspection technology, specifically relating to a comprehensive inspection tool for brake calipers. Background Technology

[0002] As a core safety component of the automotive braking system, the manufacturing quality of brake calipers directly affects driving safety. During the casting process, the external force during riser separation can easily cause deformation of the caliper's claws and guide pin mounting arms. Furthermore, the piston bore requires a sand core forming process, which, due to factors such as sand core positioning accuracy and dimensional stability, often results in defects such as dimensional deviations and excessive internal material. If these defects are not detected in time, they can lead to uneven brake clearance and brake force transmission failure after caliper assembly. In severe cases, this can cause traffic accidents such as brake pull and wheel lock-up, endangering the lives of drivers and passengers.

[0003] Currently, the industry lacks efficient full-inspection methods. Brake caliper deformation detection relies on manual operation: operators place the caliper on a testing platform, measure the gap using a feeler gauge, visually observe the gap between the caliper and the platform, or visually identify hole misalignment during machining. This method is highly subjective and has a high rate of missed detections. For the size inspection of the brake caliper piston hole, offline 3D scanning technology is mainly used, inspecting only sampled products. This cannot achieve full-process inspection and fails to cover all non-conforming products, posing significant quality risks to downstream processing and end-users. While the above technical solutions are currently the most widely used methods for detecting key brake caliper indicators in the industry, their inherent defects cannot meet the quality control requirements of large-scale production. Therefore, there is an urgent need for an efficient and accurate comprehensive testing device to solve these problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a comprehensive inspection tool for brake calipers, which solves the problems of poor detection accuracy and high risk of missed detection in existing inspection methods. It enables accurate detection of deformation defects in the brake caliper claw and guide pin hole mounting arm, as well as rapid determination of the dimensional accuracy of the brake caliper piston hole, timely identification of quality problems such as excess material and dimensional deviation, and ensures the factory pass rate of brake caliper products.

[0005] According to the technical solution of this utility model, this utility model provides a comprehensive brake caliper inspection tool, including a base, on which a positioning component is provided for clamping the brake caliper in a placement position; guide pin hole mounting arm inspection blocks are slidably arranged on both the left and right sides of the placement position on the base, and the guide pin hole mounting arm inspection blocks are provided with guide pin hole mounting arm detection slots, the shape of which corresponds to the guide pin hole mounting arm of the brake caliper; a claw transverse inspection block is slidably arranged on the front side of the placement position on the base; the length direction of the claw transverse inspection block is the left-right direction, and the claw... The width and shape of the transverse inspection block are the same as those of the brake caliper claw. The lower part of the transverse inspection block has a claw detection notch with an opening facing downward and extending through the front and rear. The shape of the claw detection notch corresponds to that of the claw. A longitudinal inspection block is slidably arranged on the transverse inspection block. The longitudinal inspection block has two detection sidewalls that fit the front and rear sides of the longitudinal inspection block. A piston hole inspection block connecting arm is also slidably arranged on the front side of the base at the placement position. The piston hole inspection block connecting arm extends to the rear and has a piston hole inspection block at its end. The shape of the piston hole inspection block corresponds to that of the brake caliper piston hole.

[0006] In some embodiments, the base is provided with guide pin hole mounting arm inspection block slide rails on both the left and right sides of the placement position. The length direction of the guide pin hole mounting arm inspection block slide rail is the left and right direction, and the guide pin hole mounting arm inspection blocks on the left and right sides are slidably connected to the guide pin hole mounting arm inspection block slide rails accordingly.

[0007] In some embodiments, the base is provided with a claw transverse detection block slide rail on the front side of the placement position. The length direction of the claw transverse detection block slide rail is the front-back direction. A claw transverse detection block connecting arm is slidably disposed on the claw transverse detection block slide rail and is connected to the claw transverse detection block.

[0008] In some embodiments, a fixed seat is provided on the front side of the transverse inspection block slide rail of the claw, and a screw through hole is provided on the fixed seat. An adjusting screw is inserted into the screw through hole. The front end of the adjusting screw is located on the front side of the fixed seat and is provided with a screw head. The size of the screw head is larger than the screw through hole. The rear end of the adjusting screw is located on the rear side of the fixed seat and is threadedly connected to the transverse inspection block connecting arm of the claw or the transverse inspection block of the claw.

[0009] In some embodiments, a return spring is also included, with the front end of the return spring connected to the fixed base and the rear end of the return spring connected to the claw transverse detection block connecting arm or the claw transverse detection block.

[0010] In some implementations, the claw transverse detection block slide rails are arranged in two positions, one on the left and one on the right.

[0011] In some embodiments, a longitudinal detection block slide rail is provided above the detection notch of the claw on the transverse detection block of the claw. The longitudinal detection block slide rail is slidably connected to the longitudinal detection block of the claw in the left-right direction.

[0012] In some embodiments, a piston hole detection block slide rail is provided at the center of the front side of the base, the length direction of the piston hole detection block slide rail is the front-to-back direction, and the piston hole detection block connecting arm is slidably connected to the piston hole detection block slide rail.

[0013] In some embodiments, a through-hole is provided on the transverse inspection block of the claw, the piston hole inspection block connecting arm passes through the through-hole, and the piston hole inspection block is located on the rear side of the transverse inspection block of the claw.

[0014] In some embodiments, the positioning assembly includes a positioning frame mounted on a base, with a positioning beam at the top of the positioning frame, the positioning beam being directly above the placement position; the positioning beam has an adjusting groove that runs vertically through it, the length direction of the adjusting groove being the front-to-back direction, a positioning top post being slidably mounted in the adjusting groove, and two positioning nuts being threadedly connected to the positioning top post, the two positioning nuts being located on the upper and lower sides of the positioning beam respectively.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. The brake caliper integrated inspection tool of this utility model is accurate and comprehensive: it adopts the cooperation of conformal inspection block and go / no-go gauge slider to realize the quantitative detection of brake caliper deformation and avoid the subjective error of manual visual inspection; the piston hole inspection block can directly detect the key dimensions of the piston hole, and combined with the full inspection mode, it completely eliminates the risk of missed inspection and ensures product quality.

[0016] 2. The brake caliper integrated inspection tool of this utility model can improve production efficiency and reduce costs: it integrates the dual functions of deformation detection and piston hole detection, without the need to switch detection equipment, and the single-piece inspection time is shortened by more than 60% compared with the existing technology; at the same time, it can screen out unqualified products in advance, avoid problems such as tool breakage in subsequent processing, reduce rework costs and tool wear, and reduce labor input.

[0017] 3. The brake caliper integrated inspection tool of this utility model is easy to operate and adaptable to production line requirements: the inspection tool has a simple structure, does not require professional technicians to operate, and ordinary workers can be put to work after simple training; the lightweight design makes it easy to move and deploy on the production line, and can realize online real-time inspection, adapting to large-scale assembly line production scenarios.

[0018] 4. The comprehensive brake caliper inspection tool of this utility model can reduce the risk of customer complaints: by using a full inspection mode, it ensures that every product leaving the factory meets the quality standards, eliminates safety hazards caused by brake caliper defects from the source, improves product market recognition, and maintains the company's brand reputation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the brake caliper integrated inspection tool provided by this utility model.

[0020] Figure 2 yes Figure 1 The diagram shows the three-dimensional structure of the brake caliper integrated inspection tool in use.

[0021] Figure 3 yes Figure 1 A top-view structural diagram.

[0022] Figure 4 This is a three-dimensional structural diagram of the brake caliper.

[0023] Figure 5 yes Figure 4 A top-view structural diagram.

[0024] Explanation of reference numerals in the attached figures: 1. Base; 11. Placement position; 2. Guide pin hole mounting arm inspection block; 21. Guide pin hole mounting arm inspection slot; 22. Guide pin hole mounting arm inspection block slide rail; 3. Claw transverse inspection block; 31. Claw inspection notch; 32. Claw transverse inspection block slide rail; 33. Claw transverse inspection block connecting arm; 34. Fixed seat; 35. Adjusting screw; 36. Screw head; 37. Return spring; 4. Claw longitudinal inspection block; 41. Claw longitudinal inspection block slide rail; 42. Inspection side wall; 5. Piston hole inspection block; 51. Piston hole inspection block connecting arm; 52. Piston hole inspection block slide rail; 61. Positioning frame; 62. Positioning beam; 63. Adjusting slide groove; 64. Positioning top column; 65. Positioning nut; 100. Brake caliper; 101. Guide pin hole mounting arm; 102. Claw; 103. Piston hole. Detailed Implementation

[0025] This utility model provides a comprehensive inspection tool for brake calipers, which solves the problems of poor detection accuracy and high risk of missed detection in existing inspection methods. This utility model addresses the pain points of quality inspection in the production process of automotive brake calipers and mainly aims to achieve two core objectives: first, to accurately detect deformation defects in the brake caliper claw and guide pin hole mounting arm; second, to quickly determine the dimensional accuracy of the brake caliper piston hole, promptly identify quality problems such as excess material and dimensional deviations, and ensure the factory pass rate of brake caliper products.

[0026] Brake calipers are the core actuators of disc brakes; see reference [link / reference needed]. Figure 4 , Figure 5The brake caliper 100 includes a piston cavity with a piston bore 103 on its inner wall, which matches the piston. Guide pin mounting arms 101 extend from the left and right sides of the piston cavity. The ends of the guide pin mounting arms 101 have guide pin holes, or will be formed in subsequent processing, to insert guide pins during product installation. A claw portion 102 is connected to the front of the piston cavity via a connecting plate, and the claw portion 102 is opposite to the piston bore 103. The basic principle of the brake caliper is that a hydraulic system drives the internal piston to extend and retract, causing the brake pads to clamp the brake disc and generate frictional resistance, thereby achieving vehicle deceleration or parking. Its performance directly determines the stability of the braking system and driving safety. The piston bore of the brake caliper is a cylindrical precision channel penetrating the caliper body, used to accommodate the piston and guide its linear reciprocating motion. It is a key transmission part for the conversion of hydraulic energy into mechanical force, and its dimensional accuracy and surface quality directly affect the smoothness of piston movement and braking response speed. Deformation is a phenomenon where parts undergo irreversible changes in their original shape and size during casting, machining, or assembly due to external forces, temperature changes, or stress release. It is a common defect affecting the assembly accuracy and performance of mechanical parts. Current brake caliper deformation detection methods have the following main drawbacks.

[0027] 1. Poor detection accuracy and high risk of missed detection: Manual visual observation and feeler gauge measurement rely on the operator's experience and sense of responsibility, which is highly subjective and cannot quantify the amount of deformation. It is easy to miss minor deformation or hidden defects due to human negligence; sampling 3D scanning cannot cover all products, and there is a risk that unqualified products will flow into downstream links.

[0028] 2. Low processing efficiency and increased production costs: If deformed parts that are missed in inspection enter the machining process, the tool will be subjected to uneven force due to the offset of the part reference, which will cause problems such as tool breakage and chipping. Not only will the tool need to be replaced, but the machining parameters will also need to be readjusted, which will seriously affect the production schedule. At the same time, rework and repair will increase the consumption of raw materials and labor costs, and reduce the overall production efficiency.

[0029] 3. High risk of customer complaints: If substandard brake calipers that are not detected enter the market, they may cause problems such as brake failure and abnormal wear during use, leading to customer complaints, damaging the company's brand image, and potentially resulting in significant economic losses such as product recalls.

[0030] The core concept of this utility model lies in integrating brake caliper deformation detection and piston hole size detection into a single fixture through a combination of "integrated design + precise mechanical inspection". Specifically, the design of the conformal inspection block, which fits the brake caliper contour, ensures the accuracy of the inspection benchmark. A go / no-go gauge method is used to quickly determine deformation defects based on the sliding state of the slider. Concentric cylindrical piston hole inspection blocks provide a direct visual identification of piston hole size anomalies. Ultimately, this achieves the inspection goal of "one-time positioning, dual inspection, and rapid judgment," solving the industry pain points of low efficiency, poor accuracy, and high missed detection rate in existing technologies.

[0031] Please see Figures 1 to 5 This utility model discloses a comprehensive brake caliper inspection fixture, comprising a base 1. The base 1 is, for example, plate-shaped, and more specifically, a high-strength base plate with a length and width at least 1.5 times the corresponding dimensions of the brake caliper and a thickness of 20mm (preferably made of wear-resistant cast iron, cast steel, etc., possessing both rigidity and lightweight characteristics). The base 1 can also be referred to as the fixture body, serving as the installation reference and support carrier for the entire fixture, ensuring stability during the inspection process. Mounting holes can be provided on the base 1 for installation and fixation to the workbench using bolts.

[0032] A positioning component is provided on the base 1. The positioning component can take various forms, such as a positioning pin or a positioning block. The positioning component is used to clamp the brake caliper 100 on the placement position 11 to prevent the brake caliper 100 from shaking during the testing process and affecting the testing accuracy. The placement position 11 is the position on the base 1 used to place the brake caliper 100 to be tested. When the brake caliper 100 is clamped in the placement position 11 by the positioning component, the piston hole 103 of the brake caliper 100 is located on the rear side, the guide pin hole mounting arm 101 of the brake caliper 100 is located on the left and right sides, and the claw part 102 of the brake caliper 100 is located on the front side.

[0033] The base 1 has guide pin hole mounting arm detection blocks 2 slidably disposed on both the left and right sides of the placement position 11. Each guide pin hole mounting arm detection block 2 has a guide pin hole mounting arm detection slot 21, the shape of which corresponds to the guide pin hole mounting arm 101 of the brake caliper 100 (corresponding cross-sectional shape). In the illustrated embodiment, the guide pin hole mounting arm detection slot 21 is a square through hole; in other embodiments, it may be an open structure such as a C-shape or other structures. The guide pin hole mounting arm detection blocks 2 can slide away from the placement position 11. After the brake caliper 100 is clamped, the guide pin hole mounting arm detection blocks 2 can slide towards the brake caliper 100, thereby allowing the guide pin hole mounting arm detection slot 21 to fit over the guide pin hole mounting arm 101. Due to the corresponding size design, if the guide pin hole mounting arm detection slot 21 can be smoothly fitted into the guide pin hole mounting arm 101, it indicates that the cross-sectional shape and size of the guide pin hole mounting arm 101 are qualified.

[0034] A transverse detection block 3 for the claw is slidably disposed on the front side of the base 1 at the placement position 11. The transverse detection block 3 for the claw is generally strip-shaped, with its length direction being the left-right direction, and its width and shape being the same as that of the claw 102 of the brake caliper 100. The lower part of the transverse detection block 3 for the claw has a claw detection notch 31 with an opening facing downward and extending from front to back, and the shape of the claw detection notch 31 corresponds to that of the claw 102; thus, after the brake caliper 100 is clamped, the claw detection notch 31 is moved to the claw 102. If it can accommodate the claw 102 and conforms to the contour of the claw 102, it indicates that the shape and size of the claw 102 in the left-right direction are qualified.

[0035] A longitudinal claw block 4 is slidably disposed on the transverse claw block 3. The longitudinal claw block 4 has two detection sidewalls 42 that fit against the front and rear sides of the longitudinal claw block 4. After the claw 102 is accommodated in the claw detection notch 31 of the transverse claw block 3, the longitudinal claw block 4 is moved. Due to the width design of the transverse claw block 3, the claw 102 should not exceed the transverse claw block 3 in the front-rear direction, so as not to obstruct the movement of the longitudinal claw block 4 (the detection sidewalls 42). Therefore, if the longitudinal claw block 4 can move smoothly through the position of the claw 102, it indicates that the shape and size of the claw 102 in the front-rear direction are qualified.

[0036] The base 1 is also slidably provided with a piston hole detection block connecting arm 51 on the front side of the placement position 11. The piston hole detection block connecting arm 51 extends to the rear side and is provided with a piston hole detection block 5 at the end. The shape of the piston hole detection block 5 corresponds to the piston hole 103 of the brake caliper 100. For example, the piston hole detection block 5 is cylindrical. If the piston hole detection block 5 can be smoothly inserted into the piston hole 103, it indicates that the shape and size of the piston hole 103 are qualified.

[0037] More specifically, the base 1 has guide pin hole mounting arm check block slide rails 22 on both the left and right sides of the placement position 11. The length direction of the guide pin hole mounting arm check block slide rails 22 is the left-right direction, and the guide pin hole mounting arm check blocks 2 on the left and right sides are slidably connected to the guide pin hole mounting arm check block slide rails 22. Optionally, limit structures are provided at both ends of the guide pin hole mounting arm check block slide rails 22 in the length direction, such as limit posts (e.g., formed by screws), to limit the movement range of the guide pin hole mounting arm check blocks 2, prevent them from falling off the guide rail, and thus allow for faster operation and movement into position. The ability to move to the two ends limited by the limit structures indicates that the shape and size are qualified.

[0038] The base 1 has a claw-type transverse inspection block slide rail 32 on the front side of the placement position 11. The length direction of the claw-type transverse inspection block slide rail 32 is the front-to-back direction. A claw-type transverse inspection block connecting arm 33 is slidably mounted on the claw-type transverse inspection block slide rail 32 and is connected to the claw-type transverse inspection block 3. Optionally, a limit structure is provided at both ends of the claw-type transverse inspection block slide rail 32 along its length direction, such as a limit post (e.g., formed by screws), to limit the movement range of the claw-type transverse inspection block connecting arm 33, prevent it from disengaging from the guide rail, and thus allow for faster operation and movement into position. The ability to move to the two ends limited by the limit structure indicates that the shape and size are qualified.

[0039] Preferably, a fixed seat 34 is provided on the front side of the transverse detection block slide rail 32 of the claw, and a screw through hole is provided on the fixed seat 34. An adjusting screw 35 is inserted into the screw through hole. The length direction of the adjusting screw 35 is in the front-back direction. The front end of the adjusting screw 35 is located on the front side of the fixed seat 34 and is provided with a screw head 36. The size of the screw head 36 is larger than the screw through hole. The rear end of the adjusting screw 35 is located on the rear side of the fixed seat 34 and is threadedly connected to the transverse detection block connecting arm 33 of the claw or the transverse detection block 3 of the claw. By turning the adjusting screw 35, the length of the exposed part of the adjusting screw 35 can be controlled. When the transverse detection block 3 of the claw moves backward to the point where it cannot move (because the screw head 36 abuts against the front side of the fixed seat 34 and cannot move, not because it is blocked by the aforementioned limiting structure), the length of the exposed part of the adjusting screw 35 can determine the position of the transverse detection block 3 of the claw. Therefore, by adjusting and controlling the position of the transverse detection block 3 of the claw when it is detected, it is easy to operate.

[0040] Preferably, the system also includes a return spring 37. The front end of the return spring 37 is connected to the fixed seat 34 (including non-fixed contact), and the rear end of the return spring 37 is connected to the claw transverse detection block connecting arm 33 or the claw transverse detection block 3 (including non-fixed contact). The return spring 37 is, for example, sleeved on the adjusting screw 35. The return spring 37 can be a tension spring or a compression spring, depending on the required operating method. For example, when the return spring 37 is a tension spring, the claw transverse detection block 3 is naturally away from the brake caliper 100. During operation and testing, the claw transverse detection block 3 is moved backward into place. After testing, releasing the hand will reset the claw transverse detection block 3 under the action of the return spring 37, thus facilitating operation.

[0041] Preferably, there are two claw transverse inspection block slide rails 32 arranged on the left and right sides, and there are also two sets of related other components. This solution restricts the strip-shaped claw transverse inspection block 3 on the left and right sides to ensure that the claw transverse inspection block 3 will not tilt.

[0042] A longitudinal detection block slide rail 41 is provided above the claw detection notch 31 on the transverse detection block 3 of the claw. The longitudinal detection block slide rail 41 extends horizontally, and the claw longitudinal detection block 4 is slidably connected to the claw longitudinal detection block slide rail 41. Furthermore, the range of movement of the claw longitudinal detection block 4 in the horizontal direction exceeds the range covered by the claw detection notch 31 in the horizontal direction, allowing the claw longitudinal detection block 4 to move past the claw detection notch 31 and stop outside the claw detection notch 31, thus not obstructing the forward and backward movement of the claw transverse detection block 3. Optionally, limit structures, such as limit posts (e.g., formed by screws), are provided at both ends of the claw longitudinal detection block slide rail 41 in the length direction to limit the range of movement of the claw longitudinal detection block 4, preventing it from disengaging from the guide rail. This allows for faster operation and positioning, and the ability to move to the ends limited by the limit structures indicates that the shape and dimensions are qualified.

[0043] A piston hole detection block slide rail 52 is centrally located on the front side of the base 1 at the placement position 11. The length direction of the piston hole detection block slide rail 52 is the front-to-back direction, and the piston hole detection block connecting arm 51 is slidably connected to the piston hole detection block slide rail 52. The piston hole detection block 5 is centrally located, specifically so that the piston hole detection block 5 is coaxial with the piston hole 103 of the clamped brake caliper 100. Optionally, limit structures are provided at both ends of the piston hole detection block slide rail 52 along its length, such as limit posts (e.g., formed by screws), to limit the movement range of the piston hole detection block connecting arm 51, prevent it from disengaging from the guide rail, and thus allow for faster operation and movement into position. The ability to move to the two ends limited by the limit structures indicates that the shape and size are qualified.

[0044] Preferably, the transverse detection block 3 of the claw portion has a through-hole, and the piston hole detection block connecting arm 51 passes through the through-hole. The piston hole detection block 5 is located on the rear side of the transverse detection block 3 of the claw portion. It is conceivable that if the height dimension of the transverse detection block 3 of the claw portion is short, the piston hole detection block connecting arm 51 is completely below the transverse detection block 3 of the claw portion, or the piston hole detection block connecting arm 51 is higher or lower than the transverse detection block 3 of the claw portion to avoid the transverse detection block 3 of the claw portion, then there is no need to provide a through-hole. This solution has a simpler and more compact structure, which can ensure that the height of the transverse detection block 3 of the claw portion is sufficient to detect the shape between adjacent claw portions 102. Furthermore, it is preferable that the through-hole can be used to form another sliding fit, further restricting the sliding direction of the transverse detection block 3 of the claw portion and the piston hole detection block 5. As a supplementary explanation, of course, the piston hole detection block connecting arm 51 will not obstruct the movement detection of the longitudinal detection block 4 of the claw portion.

[0045] In a preferred embodiment, the positioning assembly includes a positioning frame 61 mounted on the base 1. The upper part of the positioning frame 61 is a positioning beam 62, located directly above the placement position 11. The positioning beam 62 has a vertically extending adjusting groove 63, with its length direction being the front-to-back direction. A positioning pin 64 is slidably disposed within the adjusting groove 63. Two positioning nuts 65 are threaded onto the positioning pin 64, located on the upper and lower sides of the positioning beam 62, respectively. In use, the brake caliper 100 is placed in the placement position 11, and the positioning pin 64 is moved to the desired position. By tightening the positioning nuts 65 (or tightening the positioning pin 64), the positioning pin 64 moves downwards, with its lower end pressing against the brake caliper 100 (on the outer surface of the piston cavity), thus achieving clamping and positioning. Preferably, the lower end of the positioning pin 64 has a rubber pad to increase friction, ensure clamping effect, and prevent scratching the brake caliper. Preferably, the positioning beam 62 or positioning frame 61 is rotatably connected to the base 1, with the rotation axis direction being, for example, left and right, so that the clamping and releasing can be controlled by flipping. For a series of brake calipers to be tested, the positioning top post 64 can be pre-adjusted to a suitable position, so that the positioning top post 64 does not need to be adjusted during subsequent testing, thus enabling the brake calipers to be clamped and removed more quickly. More preferably, a self-locking clamping mechanism with a handle (existing structure or similar structure) is also provided on the rotatable component (positioning beam 62 or positioning frame 61). During operation, turning the handle allows the rotatable component to be rotated into position more quickly, effortlessly, and stably through the mechanical transmission structure, and the lower end of the positioning top post 64 clamps the brake caliper 100.

[0046] Preferably, the positioning assembly further includes a positioning reference portion located at the placement position 11, corresponding to the structure of the brake caliper 100. The positioning reference portion, such as a groove, insert, or stop, can limit the positioning of the brake caliper 100. For example, the brake caliper 100 can be fitted into the recessed area enclosed by the positioning reference portion, thereby ensuring that the brake caliper can be quickly positioned. Furthermore, the limiting of the positioning reference portion relies entirely on positioning points, and these positioning points are the same as the machining positioning points.

[0047] In summary, this utility model presents a comprehensive brake caliper inspection fixture integrating dual detection functions. Its core structure precisely matches the contour of the brake caliper casting. The core detection components include five conformal inspection blocks (specifically, two guide pin hole mounting arm inspection blocks 2, a claw transverse inspection block 3, a claw longitudinal inspection block 4, and a piston hole inspection block 5), five slide rails, and matching go / no-go gauge sliders (specifically, the slide rail sliders corresponding to the aforementioned inspection blocks, where the sliders utilize go / no-go gauge sliders to ensure accuracy). The conformal inspection blocks are precisely designed according to the contours of key parts such as the brake caliper claw and guide pin hole mounting arms, perfectly fitting the surface to be inspected on the brake caliper. The slide rails correspond one-to-one with the conformal inspection blocks and are installed parallel to each other on the base (base plate). The go / no-go gauge sliders can slide smoothly along the slide rails, with the inspection surface accuracy controlled within ±0.02mm. For piston bore inspection, this solution sets a (cylindrical) piston bore inspection block concentric with the piston bore design size at the position of the base corresponding to the brake caliper piston bore. The diameter of the inspection block matches the standard size of the piston bore, and the surface is precision ground.

[0048] The basic operating procedure of this utility model is as follows: The brake caliper is precisely placed on the positioning reference (placement position) of the inspection fixture base, ensuring that the surface to be inspected is tightly fitted with the conformal inspection block; the go / no-go gauge slider is pushed along the slide rail. If the slider passes through completely without jamming, the brake caliper is determined to be free of deformation; the piston hole inspection block is inserted into the piston hole. If the inspection block fits smoothly without looseness, the piston hole size is determined to be qualified, without excess material or deviation; otherwise, it is determined to be a defective product. This solution enables simultaneous, intuitive, and rapid inspection of key quality indicators of the brake caliper, significantly improving inspection efficiency and accuracy.

[0049] Furthermore, as a supplementary explanation: the corresponding / identical shapes / sizes mentioned in this document take into account the dimensional tolerances of the castings; the positioning datum of this inspection tool is consistent with the assembly and machining datum of the brake caliper, ensuring the consistency of the test results with the actual usage conditions; the dimensions of each inspection block can be customized according to the design parameters of different models of brake calipers, possessing good versatility; the inspection tool is made of wear-resistant material, and after fatigue testing, it can be used continuously for more than 300,000 cycles, or the material hardness is HRC60 or higher, meeting the durability requirements of large-scale production; the inspection process requires no additional power source, and the purely mechanical structure design reduces equipment maintenance costs and failure risks, adapting to various production environments.

[0050] After comprehensive technical research and solution demonstration, there are currently no other alternative solutions that can achieve the same purpose. Existing technologies, such as single testing equipment or manual testing methods, cannot simultaneously meet the core requirements of "full inspection, speed, accuracy, and low cost." Therefore, this technical solution is the optimal choice for solving the comprehensive testing problem of brake calipers.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; obviously, the described embodiments are some embodiments of this utility model, not all embodiments; for example, the sliding / moving method / direction of each inspection block is not limited to the illustrated embodiments, as long as the required function can be achieved; the directional descriptions such as "front", "rear", "left", "right", "up", and "down" in this article are intended to clearly reflect the relative positional relationship between the various structural parts, and are not restrictions on the placement method of this inspection tool during use; based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of this utility model; in the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other; modifications to the technical solutions recorded in the foregoing embodiments, or equivalent substitutions for some of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A comprehensive inspection tool for brake calipers, characterized in that, Includes a base (1), on which a positioning component is provided, the positioning component being used to clamp the brake caliper (100) onto the placement position (11); The base (1) has guide pin hole mounting arm inspection blocks (2) slidably installed on both the left and right sides of the placement position (11). The guide pin hole mounting arm inspection blocks (2) are provided with guide pin hole mounting arm inspection slots (21). The shape of the guide pin hole mounting arm inspection slots (21) corresponds to the guide pin hole mounting arm (101) of the brake caliper (100). A transverse detection block (3) is slidably provided on the front side of the base (1) at the placement position (11); the length direction of the transverse detection block (3) is the left and right direction, the width shape of the transverse detection block (3) is the same as the claw (102) of the brake caliper (100), the lower part of the transverse detection block (3) is provided with a claw detection notch (31) with the opening facing downward and the front and back connected, and the shape of the claw detection notch (31) corresponds to the claw (102); a longitudinal detection block (4) is slidably provided on the transverse detection block (3), and the longitudinal detection block (4) has two detection sidewalls (42) that fit the front and rear sides of the longitudinal detection block (4); The base (1) is also slidably provided with a piston hole detection block connecting arm (51) on the front side of the placement position (11). The piston hole detection block connecting arm (51) extends to the rear side and is provided with a piston hole detection block (5) at the end. The shape of the piston hole detection block (5) corresponds to the piston hole (103) of the brake caliper (100).

2. The brake caliper integrated inspection fixture according to claim 1, characterized in that, The base (1) is provided with guide pin hole mounting arm inspection block slide rail (22) on both the left and right sides of the placement position (11). The length direction of the guide pin hole mounting arm inspection block slide rail (22) is the left and right direction. The guide pin hole mounting arm inspection blocks (2) on the left and right sides are slidably connected to the guide pin hole mounting arm inspection block slide rail (22) in a corresponding manner.

3. The brake caliper inspection fixture according to claim 1, characterized in that, The base (1) is provided with a claw transverse inspection block slide rail (32) on the front side of the placement position (11). The length direction of the claw transverse inspection block slide rail (32) is the front-back direction. A claw transverse inspection block connecting arm (33) is slidably provided on the claw transverse inspection block slide rail (32). The claw transverse inspection block connecting arm (33) is connected to the claw transverse inspection block (3).

4. The brake caliper integrated inspection fixture according to claim 3, characterized in that, A fixed seat (34) is provided on the front side of the transverse inspection block slide rail (32) of the claw. A screw through hole is provided on the fixed seat (34), and an adjusting screw (35) is inserted into the screw through hole. The front end of the adjusting screw (35) is located on the front side of the fixed seat (34) and is provided with a screw head (36). The size of the screw head (36) is larger than the screw through hole. The rear end of the adjusting screw (35) is located on the rear side of the fixed seat (34) and is threadedly connected to the transverse inspection block connecting arm (33) of the claw or the transverse inspection block (3) of the claw.

5. The brake caliper inspection fixture according to claim 4, characterized in that, It also includes a return spring (37), the front end of which is connected to the fixed seat (34), and the rear end of which is connected to the claw transverse detection block connecting arm (33) or the claw transverse detection block (3).

6. The brake caliper inspection fixture according to any one of claims 3 to 5, characterized in that, The claw transverse inspection block slide rail (32) consists of two rails arranged on the left and right sides.

7. The brake caliper inspection fixture according to claim 1, characterized in that, The transverse detection block (3) of the claw is provided with a longitudinal detection block slide rail (41) above the detection notch (31) of the claw. The length direction of the longitudinal detection block slide rail (41) of the claw is the left and right direction. The longitudinal detection block (4) of the claw is slidably connected to the longitudinal detection block slide rail (41).

8. The brake caliper inspection fixture according to claim 1, characterized in that, The base (1) has a piston hole inspection block slide rail (52) in the center of the front side of the placement position (11). The length direction of the piston hole inspection block slide rail (52) is the front-back direction. The piston hole inspection block connecting arm (51) is slidably connected to the piston hole inspection block slide rail (52).

9. The brake caliper inspection fixture according to claim 8, characterized in that, The claw transverse inspection block (3) has a through clearance hole, the piston hole inspection block connecting arm (51) passes through the clearance hole, and the piston hole inspection block (5) is located on the rear side of the claw transverse inspection block (3).

10. The brake caliper integrated inspection fixture according to claim 1, characterized in that, The positioning assembly includes a positioning frame (61) set on the base (1), the upper part of the positioning frame (61) is a positioning beam (62), the positioning beam (62) is located directly above the placement position (11); the positioning beam (62) is provided with an adjustment groove (63) that runs vertically through the upper and lower parts, the length direction of the adjustment groove (63) is the front-to-back direction, the positioning top post (64) is slidably set in the adjustment groove (63), and two positioning nuts (65) are threadedly connected to the positioning top post (64), the two positioning nuts (65) are located on the upper and lower sides of the positioning beam (62) respectively.

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