A general-purpose loading detection tool

Abstract

The present application relates to loading detection tool technical field, especially to a kind of general loading detection tool, including, a gear sliding table;A fixedly installed servo drive device support seat on the gear sliding table;A servo drive device sliding table is installed on the servo drive device support seat;A general assembly tool is installed on the servo drive device sliding table;The general assembly tool includes servo cylinder, weighing sensor and walking motor, the walking motor is driven connection with the gear sliding table, for driving whole tool horizontal movement.The present application is set on sliding table multiple groups with different preset interval, including but not limited to 508mm and 1016mm load interface, the tool does not need to replace any core component, can quickly, accurately adapt to the locking position of same product in different working conditions or different model products, solve the limitation that one set of equipment only corresponds to one kind of product state of traditional special tool.

Description

Technical Field

[0001] This invention relates to the field of loading detection tooling technology, and in particular to a general-purpose loading detection tooling. Background Technology

[0002] In the field of product manufacturing and quality inspection, especially for key components such as locks and connecting mechanisms that need to withstand loads and release reliably, it is crucial to test their "load release function". This test aims to simulate whether the release mechanism can operate normally and reliably when the product is subjected to a specific load under actual working conditions.

[0003] Currently, the mainstream methods for testing the load release function of this type of product mainly rely on two technical approaches: One method is the completely manual loading method, where operators apply test loads to the product using simple tools or by directly moving weights and other heavy objects. While this method uses simple equipment, it has significant drawbacks: the loading force is difficult to control precisely and measure in real time, resulting in poor repeatability; the entire testing process relies entirely on manual labor, leading to high labor intensity and low efficiency; and it also poses certain safety risks. More importantly, for tests that need to simulate multiple load states, such as different installation or operating states of the product, designated as state A and state B, frequent changes or adjustments to the loading and installation are required, making the process cumbersome and lacking in versatility. The second type is a dedicated fixed loading fixture, which is designed and manufactured for a specific product model or fixed state, using a dedicated testing stand and loading via a motor, hydraulic, or pneumatic device. While this method improves force control and automation, its specificity is its main drawback. Each new product or different testing states of the same product, such as different locking point spacings in states A and B, requires a completely new fixture design and manufacturing, leading to long development cycles and high costs. Therefore, a universal loading testing fixture is needed to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A general-purpose loading detection fixture, comprising, A gear slide; A servo drive device support fixedly mounted on the gear slide; A servo drive slide mounted on the servo drive support; A general assembly fixture mounted on the slide table of the servo drive device; The assembly fixture includes a servo electric cylinder, a weighing sensor, and a walking motor. The walking motor is connected to the gear slide drive and is used to drive the entire fixture to move horizontally. The output end of the servo electric cylinder is connected to the slide of the servo drive device through the weighing sensor. The servo drive device slide includes a slide, and the slide is provided with at least one set of load-bearing interfaces for docking with the product locking position; The servo drive device slide is also equipped with a quick-lock pin for locking the fixture during loading and testing. This device utilizes the gear and rack transmission principle to convert the rotational motion of the travel motor into smooth and precise linear motion of the entire fixture, realizing automated switching and positioning of the loading head between different workstations or products. The travel motor can be the power source for horizontal movement, and the servo electric cylinder can provide an actuator with precise and programmable linear thrust. The weighing sensor is connected in series in the force transmission path to measure the load applied to the product in real time and accurately, forming a closed-loop control signal to ensure loading accuracy.

[0006] Preferably, the final assembly fixture further includes a cable reel for winding and unwinding cables.

[0007] Preferably, the final assembly fixture further includes a fisheye bearing disposed at the output end of the load cell and a sensor loading block connected to the fisheye bearing. The design of the fisheye bearing allows the sensor loading block to deflect at a small angle at the connection point, thereby compensating for minor axial misalignment caused by manufacturing, installation or deformation, avoiding lateral forces, protecting the precision load cell from damage, and ensuring the accuracy of force measurement.

[0008] Preferably, the sensor loading block is fixed on the slide.

[0009] Preferably, the servo drive device slide table further includes an upper slide table connecting block A and an upper slide table connecting block B. The upper slide table connecting block A and the upper slide table connecting block B are fixed on the slide table. The linear guide rail and the slider B form a high-precision, low-friction linear guide structure, ensuring that the slide table can only move along a preset and unique axial direction when subjected to huge thrust, effectively preventing lateral deviation or jamming, thereby ensuring the accuracy of the loading direction and the smoothness of the movement.

[0010] Preferably, the servo drive device slide table further includes a linear guide rail and at least two sets of sliders B; The bottom ends of the upper slide block A and the upper slide block B are mounted on the linear guide rail via the slider B.

[0011] Preferably, the gear slide includes a rack, a gear meshing with the rack, and a drive motor base plate; The travel motor is mounted on the base plate of the drive motor via a travel motor flange and drives the gear to rotate. The travel motor flange ensures the alignment and connection between the motor and the gear shaft. The meshing of the gear and the fixed rack efficiently converts the motor torque into linear power to drive the entire tooling.

[0012] Preferably, the gear slide further includes a traveling rack support plate and a slider A; The rack is mounted on the traveling rack support plate, and the traveling rack support plate is mounted on the external guide rail via the slider A.

[0013] Preferably, the slide is provided with multiple sets of load-bearing interfaces with different spacings; The multiple sets of load-bearing interfaces include a first set of interfaces with a spacing of 508mm and a second set of interfaces with a spacing of 1016mm. By prefabricating standardized and modular interface positions on the same slide, during operation, it is only necessary to select the corresponding interface for docking to complete the adaptation of products in different states, and the switching is fast and accurate.

[0014] The present invention has at least the following beneficial effects: This invention sets multiple sets of load-bearing interfaces with different preset spacings on the slide table, including but not limited to 508mm and 1016mm. This tooling can quickly and accurately adapt to the locking position of the same product in different working states or different models of products without replacing any core components. It solves the limitation of traditional dedicated tooling where one set of equipment only corresponds to one product state, significantly reducing the types of tooling and lowering procurement and warehousing costs.

[0015] This invention uses a gear slide driven by a walking motor to automatically transport the entire loading unit to the product testing platform. A servo electric cylinder provides precise and programmable loading force, and a weighing sensor enables real-time closed-loop monitoring and feedback of the loading force. This device replaces the outdated method of manually handling weights and visually interpreting them, improving testing efficiency, ensuring the consistency and repeatability of the loading process, and reducing errors caused by human operation.

[0016] Before loading, this fixture can be securely locked to the foundation or test bench by inserting a quick-release pin into the fixing pin hole of the servo drive device support. This effectively eliminates the slight deformation or displacement of the fixture itself that may be caused by the reaction force when a load of up to kg is applied. Combined with the high rigidity of the servo drive device support and the precision linear guide, it can ensure that the loading force is accurately and undisturbedly transmitted to the product under test along the predetermined axis, thereby avoiding additional stress or abnormal displacement of the product caused by fixture deformation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the external structure of a universal loading and detection fixture proposed in this invention; Figure 2 This is a top view schematic diagram of the external structure of a universal loading and detection fixture proposed in this invention; Figure 3 This is a schematic diagram of the external side view of a universal loading and detection fixture proposed in this invention; Figure 4 This is a three-dimensional structural diagram of the gear slide in a universal loading and detection fixture proposed in this invention; Figure 5 This is a top view of the gear slide in a universal loading and detection fixture proposed in this invention. Figure 6 This is a three-dimensional disassembly diagram of the slide table of the servo drive device in a universal loading and detection fixture proposed in this invention. Figure 7 This is a top plan view of the servo drive device support base in a universal loading and detection fixture proposed in this invention. Figure 8 This is a schematic diagram of the planar side view and top view of the slide table of the servo drive device in a universal loading and detection fixture proposed in this invention.

[0019] In the picture: 1. General assembly fixture; 101. Servo electric cylinder; 102. Weighing sensor; 103. Fisheye bearing; 104. Sensor loading block; 105. Travel motor; 106. Cable reel; 2. Gear slide; 201. Slider A; 202. Rack; 203. Travel rack support plate; 204. Drive motor base plate; 205. Travel motor flange; 3. Servo drive device support base; 4. Servo drive device slide; 401. Upper slide connecting block A; 402. Slide; 403. Upper slide connecting block B; 404. Quick-release pin; 405. Linear guide rail; 406. Slider B. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] Reference Figure 1-8 A general-purpose loading detection fixture, comprising: A gear slide 2 serves as the horizontal moving base for the entire tooling; A servo drive device support 3 is fixedly mounted on the gear slide 2. Two fixed loading device pin holes are opened on the right side of the surface of the servo drive device support 3. A servo drive slide 4 mounted on a servo drive support 3; A general assembly fixture 1 mounted on the servo drive slide 4; The assembly fixture 1 includes a servo electric cylinder 101, a weighing sensor 102, and a travel motor 105. The travel motor 105 is mounted on the gear slide table 2 and is used to drive the entire fixture to move horizontally. The output end of the servo electric cylinder 101 is connected to the servo drive device slide 4 through the weighing sensor 102, which is used to provide measurement of the loading force applied to the product. The servo drive device slide 4 includes a slide 402, which is provided with at least one set of load-bearing interfaces for docking with the product locking position. The servo drive device slide 4 is also provided with a quick-release pin 404, which is used to insert into the servo drive device support 3 to fix the loading device pin hole during loading detection and lock the tooling as a whole.

[0022] The final assembly fixture 1 also includes a cable reel 106, which is used to reel in and unload cables that supply power or transmit signals to the travel motor 105 and the servo cylinder 101.

[0023] The servo drive device slide 4 also includes an upper slide connecting block A401 and an upper slide connecting block B403, which are fixed to the surface of the slide 402 by bolts.

[0024] The servo drive device slide 4 also includes a linear guide rail 405 and at least two sets of sliders B406. The bottom ends of the upper slide connecting block A401 and the upper slide connecting block B403 are mounted on the linear guide rail 405 through the sliders B406 and can move linearly along the linear guide rail 405.

[0025] The gear slide 2 includes a rack 202, a gear meshing with the rack 202, and a drive motor base plate 204. The travel motor 105 is mounted on the drive motor base plate 204 through the travel motor flange 205 and drives the gear to rotate.

[0026] The gear slide 2 also includes a traveling rack support plate 203 and a slider A201. The rack 202 is mounted on the traveling rack support plate 203. An external guide rail is provided on the surface of the traveling rack support plate 203, and the slider A201 is slidably mounted on the external guide rail.

[0027] The slide table 402 is equipped with multiple sets of load-bearing interfaces with different spacings to adapt to the locking positions of the product in different states. The multiple sets of load-bearing interfaces include a first set of interfaces with a spacing of 508mm and a second set of interfaces with a spacing of 1016mm.

[0028] The final assembly fixture 1 also includes a fisheye bearing 103 disposed at the output end of the weighing sensor 102, and a sensor loading block 104 is hinged to the right side of the fisheye bearing 103, and the sensor loading block 104 is fixed to the left side surface of the slide table 402.

[0029] The servo drive support base 3 is made of high-strength aluminum alloy sheet.

[0030] A loading detection method using a general loading detection fixture includes the following steps: Step 1: Fix the product to be tested; Step 2: Start the walking motor 105, which drives the gear slide 2 through the gear and rack 202 transmission to move the entire fixture to the product alignment test table; Step 3: Control the movement of the servo drive device slide 4 so that the load-bearing interface on the slide 402 aligns with the locking position of the product. Step 4: Install the quick-release pin 404 into the pin hole of the loading device on the servo drive support 3 to fix the loading detection fixture. Step 5: Start the servo electric cylinder 101 to push the slide table 402 to apply a loading force to the product. At the same time, monitor the force value through the weighing sensor 102 to complete the test of the product's load release function in the range of 0kg to 1500kg.

[0031] The bottom gear slide 2 of this equipment serves as a movable base, responsible for driving the entire testing unit to be automatically transported to the product station; the servo drive device support 3 on it provides a rigid load-bearing frame, and the surface pin holes are used for locking; the servo drive device slide 4 402 is equipped with multi-spacing load-bearing interfaces that can adapt to different product states, and is equipped with quick-lock pins 404, which are used to rigidly lock the tooling to the foundation before loading; the top assembly tooling 1 integrates the power and measurement unit, its walking motor 105 drives horizontal movement, and the servo electric cylinder 101 applies a precisely measurable and controllable loading force to the drive slide 4 through the weighing sensor 102.

[0032] During the horizontal movement of the tooling driven by the walking motor 105, the cable reel 106 in the equipment automatically retracts and extends the cables that supply power or transmit control signals to the walking motor 105 and the servo cylinder 101. This effectively avoids cable dragging, tangling, pulling, or wear caused by long-distance movement of the tooling, ensuring the continuous reliability of power and signal transmission, operational safety, and making the overall layout of the equipment more orderly.

[0033] The upper slide block connecting block A401 and the upper slide block connecting block B403 are fixedly installed on the surface of the slide 402 by bolts. Firstly, they serve as a structural adapter to reliably transmit and distribute the driving force from the upper general assembly fixture 1 to the main structure of the slide 402. Secondly, they serve as a mounting base to provide an interface for connection with the lower linear guide slider assembly 406. This bolted connection method not only ensures the structural strength and reliability of force transmission, but also facilitates installation, debugging and maintenance.

[0034] The bottom ends of the upper slide block connecting block A401 and the upper slide block connecting block B403 are mounted on the linear guide rail 405 via the slider B406, enabling the entire slide 402 and its connected upper structure to perform high-precision, low-friction linear reciprocating motion along the linear guide rail 405. This provides precise and stable unidirectional motion constraints for the loading process, ensuring that the huge thrust generated by the servo electric cylinder 101 can be strictly transmitted along the preset axis, effectively preventing lateral deviation, jamming, or overturning.

[0035] The torque output by the travel motor 105 is transmitted through the gear mounted on the drive motor base plate 204 via the travel motor flange 205, and meshes with the rack 202 fixed on the travel rack support plate 203, thereby converting the rotational motion into linear motion. At the same time, the entire gear slide module slides on the external guide rail through the slider A201 mounted on the bottom of its travel rack support plate 203. The meshing of the rack 202 and the gear provides driving and positioning accuracy, while the combination of the travel rack support plate 203, the slider A201 and the external guide rail undertakes the load-bearing and guiding functions, ensuring that the entire fixture can move horizontally over a wide range smoothly, accurately and with low friction.

[0036] The slide table 402 is equipped with a first set of interfaces with a spacing of 508mm and a second set of interfaces with a spacing of 1016mm, which can accurately adapt to the different locking point positions of the product in state A and state B. The same set of tooling can complete the testing of multiple product states or models by quickly selecting different interfaces for docking, without the need to replace any major components. This fundamentally solves the problem of frequent replacement of special tooling due to changes in product state in traditional testing methods, and greatly improves the applicability, testing efficiency and economic benefits of the equipment.

[0037] The fisheye bearing 103 and the sensor loading block 104 connected to it are key force transmission and error compensation mechanisms located at the output end of the load cell 102. With its spherical hinge structure, the fisheye bearing 103 provides a flexible connection point that can swing slightly in multiple directions between the load cell 102 and the sensor loading block 104. This compensates for the axial alignment error caused by the small deformation of the structural components due to manufacturing tolerances, installation deviations, or load. In the actual loading process, even if there is a very small angular deviation between the thrust axis of the servo cylinder 101 and the motion axis of the slide 402, the fisheye bearing 103 can adaptively adjust the angle through its hinge function, thereby ensuring that the applied pure axial force is accurately transmitted to the sensor loading block 104, effectively avoiding the generation of lateral force or bending moment.

[0038] The sensor loading block 104 is fixed to the left side surface of the slide table 402. As the final force transmission terminal, it evenly diffuses and applies the calibrated and purified axial thrust to the slide table 402, maximizing the protection of the high-precision weighing sensor 102 from damage by non-axial forces, ensuring the stability and accuracy of its long-term measurement, and thus ensuring the authenticity and reliability of the force value data throughout the loading and detection process.

[0039] Working principle: First, securely install the lock of the product under test in state A or state B on the dedicated test bench, check that all components of the general loading test fixture are properly connected, and that the servo cylinder 101 and the walking motor 105 are in the reset standby state.

[0040] Next, the control system is activated, and a command is sent to the walking motor 105. The walking motor 105 outputs torque, which meshes with the rack 202 fixedly installed on the gear slide 2 through the gear at its end. This meshing action drives the support 3, the drive slide 4 and the assembly fixture 1 as a whole to move smoothly along the external guide rail laid on the ground. With feedback from the encoder or position sensor, the fixture eventually stops automatically at the preset position that is precisely aligned with the product to be tested.

[0041] Next, based on the state of the product under test, the control system selects the corresponding bearing interface of the slide 402 on the servo drive device slide 4, for example, an interface group with a spacing of 508mm or 1016mm, and drives the slide 402 to make small-range adjustments along the linear guide 405 by controlling the servo electric cylinder 101 or other fine-tuning mechanism, so that the selected bearing interface can accurately and reliably complete the mechanical docking with the locking force point on the product. After docking and before formal loading, in order to ensure the absolute stability of the test, the operator or automatic mechanism inserts the quick-release pin 404 into the preset fixed loading device pin hole on the servo drive device support 3. This operation locks the main body of the entire loading test fixture and the test bench base into one, forming a force-bearing frame, preventing any harmful displacement or deformation of the fixture due to reaction force during subsequent high load loading.

[0042] Following the locking, the loading program is initiated. The servo cylinder 101 receives the control signal, and its push rod extends at a constant speed. The thrust is transmitted sequentially through the load cell 102, the fisheye bearing 103, the sensor loading block 104, and the upper slide block connecting block A401 and B403, finally reaching the docked slide 402. Under the thrust, the slide 402 moves smoothly along the high-precision linear guide 405 towards the product to be tested, thereby applying an axial load to the product through the load-bearing interface, gradually increasing from 0 kg to a maximum of 1500 kg. During this process, the load cell 102 monitors and feeds back the actual loading force value in real time and continuously, forming a closed-loop control to ensure the accuracy and stability of the loading force. At this time, the operator or the automatic system observes and records whether the release mechanism can operate normally and reliably when the product reaches the set load, thus completing the test of the load release function.

[0043] Finally, after the inspection is completed, the servo cylinder 101 moves in the reverse direction to remove the load. Then, the quick-release pin 404 is pulled out to release the lock, and the travel motor 105 drives in the reverse direction to move the entire fixture away from the product and return to the initial standby position, ready for the next inspection.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A universal loading and detection fixture, characterized in that, include, one Gear slide (2); A servo drive support (3) is fixedly mounted on the gear slide (2); A servo drive device slide (4) mounted on the servo drive device support (3). A general assembly fixture (1) mounted on the slide table (4) of the servo drive device. The assembly fixture (1) includes a servo electric cylinder (101), a weighing sensor (102) and a walking motor (105). The walking motor (105) is connected to the gear slide (2) and is used to drive the entire fixture to move horizontally. The output end of the servo electric cylinder (101) is connected to the slide table (4) of the servo drive device through the weighing sensor (102); The servo drive device slide (4) includes a slide (402), and the slide (402) is provided with at least one set of load-bearing interfaces for docking with the product locking position; The servo drive device slide (4) is also provided with a quick-release pin (404) for locking and fixing the tooling during loading and testing.

2. The universal loading and detection fixture according to claim 1, characterized in that, The final assembly fixture (1) also includes a cable reel (106) for winding and unwinding cables.

3. The universal loading and detection fixture according to claim 2, characterized in that, The assembly fixture (1) also includes a fisheye bearing (103) disposed at the output end of the weighing sensor (102) and a sensor loading block (104) connected to the fisheye bearing (103).

4. The universal loading and detection fixture according to claim 3, characterized in that, The sensor loading block (104) is fixed on the slide (402).

5. The universal loading and detection fixture according to claim 1, characterized in that, The servo drive device slide (4) also includes an upper slide connecting block A (401) and an upper slide connecting block B (403), which are fixed on the slide (402).

6. The universal loading and testing fixture according to claim 5, characterized in that, The servo drive device slide (4) also includes a linear guide rail (405) and at least two sets of sliders B (406). The bottom ends of the upper slide block A (401) and the upper slide block B (403) are mounted on the linear guide rail (405) via the slider B (406).

7. The universal loading and detection fixture according to claim 1, characterized in that, The gear slide (2) includes a rack (202), a gear meshing with the rack (202), and a drive motor base plate (204). The walking motor (105) is mounted on the drive motor base plate (204) via the walking motor flange (205) and drives the gear to rotate.

8. A universal loading and testing fixture according to claim 7, characterized in that, The gear slide (2) also includes a traveling rack support plate (203) and a slider A (201). The rack (202) is mounted on the traveling rack support plate (203), and the traveling rack support plate (203) is mounted on the external guide rail via the slider A (201).

9. A universal loading detection fixture according to claim 1, characterized in that, The slide (402) is provided with multiple sets of load-bearing interfaces with different spacings; The multiple sets of load-bearing interfaces include a first set of interfaces with a spacing of 508 mm and a second set of interfaces with a spacing of 1016 mm.

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