A contact-type testing device for engine spindles

Abstract

This application discloses a contact-type inspection device for engine mandrels, relating to the field of bearing inspection technology. It includes a module bracket, a PPU bracket, a PPU, a pneumatic gripper assembly, a servo motor, a positioning seat, a pneumatic measuring assembly, a fixture mounting plate, a third bracket, and a fixing plate. The pneumatic gripper assembly is fixed to the PPU bracket via a connecting plate and is used to grip and move the bearing. The servo motor is fixed to the module bracket, and its output shaft is connected to the PPU. The positioning seat is slidably connected to a slide rail via an electric steel slider, and the slide rail is fixed to the module bracket. The positioning seat is used to place the bearing to be inspected. The fixture mounting plate is fixed to the module bracket and is used to fix and support other components. The pneumatic measuring assembly is fixed to the fixture mounting plate, and a contact head with lateral movement moves on the bearing surface to perform constant pressure contact-type dimensional inspection of the mandrel. This device achieves the technical effects of diverse inspection content, improved accuracy of inspection results, convenient operation, and increased inspection efficiency.

Description

Technical Field

[0001] This invention relates to the field of bearing testing technology, and in particular to a contact-type testing device for engine spindles. Background Technology

[0002] A bearing is a mechanical component used to support rotational or linear motion, reducing friction and guiding mechanical devices in a specific direction. It typically consists of rollers, needle rollers, a mandrel, and a bearing body, and is widely used in various mechanical equipment and industrial fields. However, the dimensional inspection of the mandrel in a bearing is crucial, as it directly affects the bearing's assembly accuracy and service life. Even minute dimensional deviations can lead to unstable bearing operation or even malfunction.

[0003] Chinese invention patent CN115824642B discloses an automatic testing device for bearings, specifically for mandrel testing. This device includes a testing platform with sliding holes, a rotating plate rotatably mounted inside the platform, and a fixed limit slider. It also includes a telescopic component fixed to the testing platform, a lifting assembly consisting of a lifting plate, a testing component, an imaging unit, and a connecting shaft, a drive assembly comprising a carriage, a drive motor, and drive rollers, and a transmission assembly consisting of a transmission rod and a telescopic rod. The invention uses the telescopic component to lower the lifting plate, automatically engaging the testing component with the bearing's inner ring. After engagement, the transmission assembly drives the entire drive assembly to translate, causing the drive rollers to abut against the bearing's outer ring surface. This process requires only one movement of the telescopic component, enabling simultaneous adjustment of the testing and drive assemblies and providing convenience for flexible bearing testing.

[0004] While the above solution achieves automated bearing inspection during shaft core testing, in actual use it only performs single performance testing on the bearing's flexibility, without considering the dimensions of the shaft. This results in deviations in the test results, failing to provide sufficient testing accuracy and stability, and reducing the precision of the inspection. At the same time, the cumbersome manual operation reduces the testing efficiency. Summary of the Invention

[0005] This application provides an engine spindle contact testing device, which solves the technical problems of limited testing content, inaccurate testing results, cumbersome manual operation, and reduced testing efficiency in the prior art. It achieves the technical effects of diverse testing content, improved testing accuracy, convenient operation, and increased testing efficiency.

[0006] This application provides a contact-type inspection device for engine mandrels, including a module bracket, a PPU bracket, a PPU, a pneumatic gripper assembly, a servo motor, a positioning seat, a pneumatic measuring assembly, a fixture mounting plate, a third bracket, and a fixing plate. The module bracket is a steel frame, providing a basic support structure for the entire device. The PPU bracket is placed opposite the module bracket and fixed to the module bracket by bolts, for mounting the PPU. The PPU is fixed to the PPU bracket, providing air source and power support for the entire inspection device. The pneumatic gripper assembly is fixed to the PPU bracket via a connecting plate, for gripping and moving the bearing. The servo motor is fixed to the module bracket, and its output shaft is connected to the PPU. The positioning seat is slidably connected to a slide rail via an electric steel slider, the slide rail being fixed to the module bracket, and the positioning seat is used to place the bearing to be inspected. The fixture mounting plate is fixed to the module bracket, for fixing and supporting other components. The pneumatic measuring assembly is fixed to the fixture mounting plate, and its transversely moving contact head moves on the bearing surface to perform constant pressure contact-type dimensional inspection of the mandrel.

[0007] Furthermore, the pneumatic measurement assembly includes a servo electric steel, an L-shaped plate, cylinder one, a displacement sensor, a contact, a pneumatic measurement ring gauge, and cylinder two. The servo electric steel is fixed on the fixture mounting plate and is used to drive the contact to move for contact measurement. The L-shaped plate is placed vertically and fixed on the servo electric steel. Cylinder one is placed vertically and fixed on the horizontal section of the L-shaped plate. The displacement sensor is fixed on the servo electric steel and is used to measure the displacement of the contact. The contact is fixed to the bottom of the displacement sensor and directly contacts the bearing roller for measurement. The ring gauge is detachably fixed on the fixture mounting plate and located below the piston rod of cylinder one, used to provide a measurement reference for the bearing roller. Cylinder two is fixed on the fixture mounting plate and its piston end is fixed with a lever, used to drive the lever to move and press the roller.

[0008] Furthermore, a rotation detection component is fixed to one telescopic end of the cylinder, and the rotation detection component is used to detect the size of the mandrel when the roller is rotating.

[0009] Furthermore, the rotation detection assembly includes a support rod, a drive motor, a drive wheel, a fixed column, and a fixed bladder;

[0010] The support rod has an L-shaped structure and is fixed to the fixture mounting plate; the drive motor is fixed to the fixture mounting plate and located below the support rod, and is used to drive the drive wheel to rotate; the drive wheel is rotatably connected to the support rod and fixedly connected to the output shaft of the drive motor, and is used to drive the bearing roller to rotate, thereby realizing dynamic detection; the fixing column is fixed to one telescopic end of the cylinder; the fixing bladder is fixed to the outside of the fixing column, and is used to fix the vertically placed mandrel and detect the shaft center size.

[0011] Furthermore, multiple sets of support bladders are fixed between the inside of the fixation bladder and the fixation column. Each set of support bladders is arranged vertically and includes four circumferentially arranged support bladders. The support bladders are placed horizontally to increase the support and stability of the fixation bladder.

[0012] Furthermore, both the fixation bladder and the support bladder are connected to an air pump via external pipes. The external air pipes of the fixation bladder and the support bladder are different, and pressure sensor one and pressure sensor two are respectively installed at their external pipes. Pressure sensor one and pressure sensor two are used to detect the internal air pressure of the fixation bladder and the support bladder, respectively.

[0013] Furthermore, the support capsule has a cylindrical structure with two parts, including an air column and a placement cavity;

[0014] The air column is located in the middle of the support bladder and is filled with paraffin wax to enhance the stability of the fixation bladder; the placement cavity is annular and located outside the air column, and the interior of the placement cavity is filled with paraffin wax to enhance the stability of the fixation bladder.

[0015] Furthermore, each of the support bags is fixed with a thermocouple detector at one end near the mandrel, and the thermocouple detector is used to detect the temperature of the mandrel at different rotational speeds of the roller.

[0016] Furthermore, each of the support capsules has a set of position capsules fixed on the outer side of the end near the mandrel. Each set of position capsules includes two position capsules arranged vertically, and the position capsules are spherical capsule structures.

[0017] Furthermore, multiple adjustment bladders are fixed to the outside of the fixed bladder. The adjustment bladders are annular structures and correspond one-to-one with each set of support bladders. They are used to cooperate with the position bladders to achieve fine-tuning of the position of the thermocouple detection point.

[0018] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0019] By effectively combining a pneumatic system and a motor drive, high-precision contact-type dimensional inspection of the mandrel in a bearing is achieved. By applying constant pressure, stable contact between the inspection probe and the surface of the bearing being measured is ensured, thereby reducing measurement errors caused by unstable contact and improving measurement stability. This effectively solves the technical problems of existing technologies, such as limited inspection content, inaccurate inspection results, cumbersome manual operation, and reduced inspection efficiency. It achieves the technical effects of diverse inspection content, improved accuracy of inspection results, convenient operation, and increased inspection efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an engine spindle contact detection device according to the present invention.

[0021] Figure 2 This is a side perspective three-dimensional structural diagram of an engine spindle contact detection device according to the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the mandrel of an engine mandrel contact testing device of the present invention during constant pressure contact testing.

[0023] Figure 4 This invention relates to a contact-type detection device for engine spindles. Figure 3 A magnified view of a portion of point A in the middle.

[0024] Figure 5 This is a three-dimensional structural diagram of the spindle of an engine spindle contact detection device of the present invention when performing rotational torque dimension contact detection.

[0025] Figure 6 This invention relates to a contact-type detection device for engine spindles. Figure 5 A magnified view of a portion of point B in the middle.

[0026] Figure 7 This is a three-dimensional structural diagram of the rotation detection component of the engine spindle contact detection device of the present invention when performing dimensional detection on the spindle.

[0027] Figure 8 This is a longitudinal full sectional view of the rotation detection component of an engine spindle contact detection device of the present invention when performing dimensional detection on the spindle.

[0028] Figure 9 This invention relates to a contact-type detection device for engine spindles. Figure 8 A magnified view of a portion of point C in the middle.

[0029] Figure 10 This is a transverse full sectional view of the rotation detection component of an engine spindle contact detection device of the present invention when performing dimensional detection on the spindle.

[0030] In the diagram: 100, Module bracket; 110, PPU bracket; 111, Connecting plate; 120, PPU; 130, Pneumatic gripper assembly; 140, Servo motor; 150, Positioning seat; 151, Electric steel slider; 152, Slide rail; 160, Pneumatic measurement assembly; 161, Servo electric steel; 162, L-shaped plate; 163, Cylinder 1; 164, Displacement sensor; 165, Contact; 166, Ring gauge; 167. Cylinder II; 168. Paddle; 170. Inspection fixture mounting plate; 200. Rotation detection assembly; 210. Support rod; 220. Drive motor; 230. Drive wheel; 310. Fixed column; 320. Fixed bladder; 330. Support bladder; 331. Air column; 332. Paraffin wax; 340. Position bladder; 350. Adjustment bladder; 001. Roller; 002. Needle roller; 003. Mandrel; 004. Body. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0032] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please see Figure 1 The diagram shows the external structure of an engine spindle contact testing device according to the present invention. The engine spindle contact testing device of this application adopts an effective combination of pneumatic system and motor drive to achieve high-precision contact dimensional detection of bearings. By applying constant pressure, it ensures stable contact between the detection contact and the surface of the bearing being tested, thereby reducing measurement errors caused by unstable contact, improving measurement stability, and achieving the technical effects of diverse detection content, improved accuracy of detection results, convenient operation, and improved detection efficiency.

[0035] Example 1: As Figures 1-4As shown, this application discloses an engine spindle contact testing device, which includes a module bracket 100, a PPU bracket 110, a PPU 120, a pneumatic gripper assembly 130, a servo motor 140, a positioning seat 150, a pneumatic measuring assembly 160, a fixture mounting plate 170, a third bracket 180, and a fixing plate 190.

[0036] The module support 100 is a steel frame, which is used to provide a basic support structure for the entire device;

[0037] The PPU bracket 110 is placed opposite to the module bracket 100 and fixed to the module bracket 100 by bolts, for mounting the PPU 120.

[0038] The PPU120 is fixed on the PPU bracket 110 and is used to provide air source and power support for the entire detection device.

[0039] The pneumatic gripper assembly 130 is fixed to the PPU bracket 110 via a connecting plate 111 and is used to grip and move the bearing.

[0040] The servo motor 140 is fixed on the module bracket 100 and its output shaft is connected to the PPU 120.

[0041] The positioning seat 150 is slidably connected to the slide rail 152 via the electric steel slider 151. The slide rail 152 is fixed on the module bracket 100. The positioning seat 150 is used to place the bearing to be tested.

[0042] The fixture mounting plate 170 is fixed on the module bracket 100 and is used to fix and support other components;

[0043] The pneumatic measuring component 160 is fixed on the fixture mounting plate 170, and the contact 165 with lateral movement moves on the bearing surface to perform constant pressure contact dimensional detection on the mandrel 003.

[0044] The pneumatic measurement assembly 160 includes a servo electric steel 161, an L-shaped plate 162, a first cylinder 163, a displacement sensor 164, a contact 165, a pneumatic measurement ring gauge 166, and a second cylinder 167.

[0045] The servo electric steel 161 is fixed on the fixture mounting plate 170 and is used to drive the contact 165 to move for contact measurement.

[0046] The L-shaped plate 162 is placed vertically and fixed on the servo electric steel 161;

[0047] The cylinder 163 is placed vertically and fixed to the horizontal section of the L-shaped plate 162;

[0048] The displacement sensor 164 is fixed on the servo electric steel 161 and is used to measure the displacement of the contact 165;

[0049] The contact 165 is fixed to the bottom of the displacement sensor 164 and directly contacts the bearing roller 001 for measurement;

[0050] The ring gauge 166 is detachably fixed to the fixture mounting plate 170 and located below the piston rod of cylinder 163, and is used to provide a measurement reference for bearing roller 001.

[0051] The cylinder 167 is fixed on the fixture mounting plate 170 and its piston end is fixed with a paddle 168, which is used to drive the paddle 168 to move and press the roller 001.

[0052] The displacement sensor 164 is used to measure the displacement of the contact 165 in real time. It is preferably a linear displacement sensor and is electrically driven, which is existing technology and will not be described in detail here.

[0053] In actual operation, the steps of this embodiment are as follows:

[0054] Step 1: Activate the pneumatic gripper assembly 130 to grip the bearing and move it to the positioning seat 150 position;

[0055] Step 2: After the pneumatic gripper assembly 130 places the bearing horizontally on the positioning seat 150, it returns to its initial position;

[0056] Step 3: Start the electric steel slider 151 to move upward along the slide rail 152 until the bearing is fully inserted into the pneumatic measuring ring gauge 166;

[0057] Step 4: Start cylinder 2 167 to drive the paddle 168 to move towards the bearing side and press against the bearing roller 001. At the same time, start the micro servo electric steel 161 to drive the contact 165 to approach the bearing roller 001 and move linearly along its surface to perform constant pressure contact detection.

[0058] Step 5: The displacement data of the measuring contact 165 is collected in real time by the displacement sensor 164 and transmitted to the processing system for analysis and processing;

[0059] Step 6: After the test is completed, drive the miniature servo electric steel 161 to retract, so that the contact 165 disengages from the surface of the bearing roller 001, and drive the electric steel slider 151 to move the roller 001 down to return to the initial position.

[0060] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0061] By effectively combining a pneumatic system and a motor drive, constant pressure contact dimensional inspection of bearings is achieved. This solves the problems of cumbersome manual operation and low inspection accuracy in traditional inspection methods, improves inspection efficiency and accuracy, reduces measurement errors caused by unstable contact, and enhances measurement stability. It achieves the technical effects of diverse inspection content, improved accuracy of inspection results, convenient operation, and increased inspection efficiency.

[0062] Example 2: Considering that bearings are mostly in a rotating state during operation, the contact pressure of roller 001 will change with the working environment of the bearing under different conditions. This is undoubtedly a significant unstable factor for dimensional accuracy, and long-term test results will inevitably be affected by tolerance, temperature changes, and structural wear. In order to further perform more accurate dimensional inspection of mandrel 003, this application proposes the following technical solution to address the above-mentioned technical problems:

[0063] like Figure 5 and Figure 6 As shown, a rotation detection component 200 is fixed to the telescopic end of the cylinder 163. The rotation detection component 200 is used to detect the size of the spindle 003 when the roller 001 is rotating.

[0064] The rotation detection assembly 200 includes a support rod 210, a drive motor 220, a drive wheel 230, a fixed column 310, and a fixed bladder 320;

[0065] The support rod 210 has an L-shaped structure and is fixed on the fixture mounting plate 170;

[0066] The drive motor 220 is fixed on the fixture mounting plate 170 and located below the support rod 210, and is used to drive the drive wheel 230 to rotate.

[0067] The drive wheel 230 is rotatably connected to the support rod 210 and fixedly connected to the output shaft of the drive motor 220, and is used to drive the bearing roller 001 to rotate to achieve dynamic detection.

[0068] The fixing post 310 is fixed to the telescopic end of cylinder 163;

[0069] The fixing bladder 320 is fixed to the outside of the fixing post 310 and is used to fix the vertically placed mandrel 003 and to detect the shaft size.

[0070] This application, by setting a fixing bladder 320, can fix the position of the mandrel 003 through gas expansion. At the same time, it can monitor the air pressure change of the fixing bladder 320 through the rotation state of the roller 001, thereby detecting the position and size changes of the mandrel 003 under different rotation speed states of the outer roller 001.

[0071] This application simulates the stress on the mandrel 003 during operation by placing the bearing horizontally and using the drive wheel 230 to rotate the outer ring roller 001. The dynamic detection method more accurately reflects the actual dimensional changes and operational stability of the mandrel 003 than static detection. The fixing bladder 320 extends into the mandrel 003 under the action of the piston rod of cylinder 163, fixing the mandrel 003 through gas expansion. This effectively prevents the mandrel 003 from moving or shaking during the detection process, thus ensuring the stability and reliability of the detection results. By detecting changes in gas pressure, the dimensional conformity of the mandrel 003 is indirectly determined, avoiding wear and errors that may occur with contact measurement, reducing measurement errors. It is also applicable to the dimensional detection of mandrels 003 of different specifications and types, exhibiting strong flexibility and versatility.

[0072] Example 3: Considering that the fixing bladder 320 is flexible, when the roller 001 is rotating at high speed, its spindle 003 will deviate from the axis of the fixing bladder 320, causing the spindle 003 to be unstable during the detection process. In order to improve the detection stability and detection accuracy, this application proposes the following technical solution to the above-mentioned technical problems, specifically:

[0073] like Figure 7 and Figure 8 As shown, multiple sets of support bladders 330 are fixed between the inside of the fixation bladder 320 and the fixation column 310. Each set of support bladders 330 is arranged vertically and includes four circumferentially arranged support bladders 330. The support bladders 330 are placed horizontally to increase the support and stability of the fixation bladder 320.

[0074] Both the fixation bladder 320 and the support bladder 330 are connected to an air pump via external pipes. The external air pipes of the fixation bladder 320 and the support bladder 330 are different, and pressure sensor one and pressure sensor two are respectively installed at their external pipes. Pressure sensor one and pressure sensor two are used to detect the internal air pressure of the fixation bladder 320 and the support bladder 330, respectively.

[0075] This application provides additional support for the fixed bladder 320 by setting the support bladder 330, which effectively prevents the mandrel 003 from shifting off the axis of the fixed bladder 320 when rotating at high speed. This reduces measurement errors caused by axis shift, helps to more accurately evaluate the size and performance of the mandrel 003, and enables the fixed bladder 320 to adapt to high-speed rotating testing environments, thus expanding the applicability of the testing device.

[0076] Example 4: To further improve the stability of the mandrel 003 and enhance the support of the fixing pouch 320, enabling this application to adapt to the support and fixation of the mandrel 003 at different speeds and to make the test results more accurate, this application proposes the following technical solution to address the above-mentioned technical problems:

[0077] like Figure 8 and Figure 9 As shown, the support bladder 330 has a cylindrical structure with two parts, including an air column 331 and a placement cavity;

[0078] The air column 331 is located in the middle of the support bladder 330 and is filled with paraffin wax 332 to enhance the stability of the fixation bladder 320.

[0079] The placement cavity is an annular structure located outside the air column 331. Paraffin wax 332 is placed inside the placement cavity to enhance the stability of the fixation bladder 320.

[0080] This application provides additional support to the fixation capsule 320 by filling the placement cavity with paraffin wax 332. Especially when the mandrel 003 is rotating at high speed, this support helps reduce the relative movement between the mandrel 003 and the fixation capsule 320, thereby improving stability during the detection process. Simultaneously, the internal air column 331 and the external paraffin layer together form a more robust support structure. The air column 331 provides initial support and cushioning, while the paraffin layer further enhances the support effect through its plasticity. This allows the fixation capsule 320 to better adapt to different shapes and sizes of the mandrel 003, meeting diverse monitoring needs and expanding the detection range.

[0081] Example 5: Considering that in practical applications, the mandrel 003 may face various complex working conditions, such as high temperature and high-speed rotation, and since the mechanical dimensions are affected by its own temperature to a certain extent, it is equally important to detect the dimensions of the mandrel 003 at different speeds and temperatures. This application proposes the following technical solution to address the above-mentioned technical problems:

[0082] like Figure 9 and Figure 10 As shown, each of the support pouches 330 is fixed with a thermocouple detector at one end near the spindle 003. The thermocouple detector is used to detect the temperature of the spindle 003 under different rotational speeds of the roller 001.

[0083] Each of the support capsules 330 has a set of position capsules 340 fixed on the outer side of one end near the spindle 003. Each set of position capsules 340 includes two position capsules 340 arranged vertically. The position capsules 340 are spherical capsule structures.

[0084] Multiple adjustment bladders 350 are fixed to the outside of the fixed bladder 320. The adjustment bladder 350 has a ring structure and corresponds one-to-one with each group of support bladders 330. It is used to cooperate with the position bladder 340 to achieve fine adjustment of the position of the thermocouple detection point.

[0085] The thermocouple detector is used to detect the temperature change of the mandrel 003 in real time. It is preferably an S-type thermocouple made of platinum-rhodium alloy, which is existing technology and will not be described in detail here.

[0086] This application, by real-time monitoring of the temperature change of the mandrel 003 at different rotational speeds and combining it with the gas pressure change within the fixed bladder 320, can more accurately assess the size and performance of the mandrel 003. The multi-parameter integrated detection method significantly improves the accuracy and reliability of the detection. Through the cooperation of the position bladder 340 and the adjustment bladder 350, fine-tuning of the thermocouple detection point can be achieved, enabling the detection device to adapt to the detection needs of mandrels 003 of different specifications and types, thus improving the flexibility and versatility of the detection. The cooperation between the thermocouple detector and the fine-tuning mechanism helps to reduce manual intervention, improve detection efficiency, and reduce the impact of human error on the detection results.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A contact-type testing device for engine spindles, characterized in that, The device includes a module bracket (100), a PPU bracket (110), a PPU (120), a pneumatic gripper assembly (130), a servo motor (140), a positioning seat (150), a pneumatic measuring assembly (160), a fixture mounting plate (170), a third bracket (180), and a fixing plate (190). The module bracket (100) is a steel frame that provides the basic support structure for the entire device. The PPU bracket (110) is placed opposite to the module bracket (100) and fixed to the module bracket (100) by bolts, and is used to install the PPU (120). The PPU (120) is fixed to the PPU bracket (110) and is used to provide air source and power support for the entire testing device. The pneumatic gripper assembly (130) is connected to the module bracket (140) by bolts. The connecting plate (111) is fixed on the PPU bracket (110) for gripping and moving the bearing; the servo motor (140) is fixed on the module bracket (100) and its output shaft is connected to the PPU (120); the positioning seat (150) is slidably connected to the slide rail (152) via the electric steel slider (151), the slide rail (152) is fixed on the module bracket (100), and the positioning seat (150) is used to place the bearing to be inspected; the fixture mounting plate (170) is fixed on the module bracket (100) for fixing and supporting other components; the pneumatic measuring assembly (160) is fixed on the fixture mounting plate (170) and has a transversely moving contact (165) that moves on the bearing surface to perform constant pressure contact dimensional inspection of the mandrel.

2. The engine spindle contact testing device as described in claim 1, characterized in that, The pneumatic measurement assembly (160) includes a servo electric steel (161), an L-shaped plate (162), a cylinder (163), a displacement sensor (164), a contact (165), a pneumatic measurement ring gauge (166), and a cylinder (167). The servo electric steel (161) is fixed on the fixture mounting plate (170) and is used to drive the contact (165) to move for contact measurement. The L-shaped plate (162) is placed vertically and fixed on the servo electric steel (161). The cylinder (163) is placed vertically and fixed on the horizontal section of the L-shaped plate (162). The displacement sensor (164) is fixed on the horizontal section of the L-shaped plate (162). The displacement of the contact (165) is measured on the servo electric steel (161). The contact (165) is fixed to the bottom of the displacement sensor (164) and directly contacts the bearing roller (001) for measurement. The ring gauge (166) is fixed to the fixture mounting plate (170) in a detachable manner and is located below the piston rod of cylinder one (163) for providing a measurement reference for the bearing roller (001). The cylinder two (167) is fixed to the fixture mounting plate (170) and its piston end is fixed with a paddle (168) for driving the paddle (168) to move and press the roller (001).

3. The engine spindle contact testing device as described in claim 2, characterized in that, The cylinder (163) has a rotation detection component (200) fixed at its telescopic end. The rotation detection component (200) is used to detect the size of the spindle (003) when the roller (001) is rotating.

4. The engine spindle contact testing device as described in claim 3, characterized in that, The rotation detection assembly (200) includes a support rod (210), a drive motor (220), a drive wheel (230), a fixed column (310), and a fixed bladder (320). The support rod (210) is an L-shaped structure and is fixed on the fixture mounting plate (170). The drive motor (220) is fixed on the fixture mounting plate (170) and located below the support rod (210), and is used to drive the drive wheel (230) to rotate. The drive wheel (230) is rotatably connected to the support rod (210) and fixedly connected to the output shaft of the drive motor (220), and is used to drive the bearing roller (001) to rotate, thereby realizing dynamic detection. The fixed column (310) is fixed on the telescopic end of cylinder one (163). The fixed bladder (320) is fixed on the outside of the fixed column (310) and is used to fix the vertically placed mandrel (003) and detect its axis size.

5. The engine spindle contact testing device as described in claim 4, characterized in that, Multiple sets of support bladders (330) are fixed between the inside of the fixation bladder (320) and the fixation column (310). Each set of support bladders (330) is arranged vertically and includes four circumferentially arranged support bladders (330). The support bladders (330) are placed horizontally to increase the support and stability of the fixation bladder (310).

6. The engine spindle contact testing device as described in claim 5, characterized in that, The fixed bladder (310) and the support bladder (330) are both connected to the air pump through external pipes. The external air pipes of the fixed bladder (310) and the support bladder (330) are different, and pressure sensor one and pressure sensor two are respectively installed at their external pipes. Pressure sensor one and pressure sensor two are used to detect the internal air pressure of the fixed bladder (310) and the support bladder (330) respectively.

7. The engine spindle contact testing device as described in claim 6, characterized in that, The support bladder (330) has a cylindrical structure with two parts, including an air column (331) and a placement cavity; The air column (331) is located in the middle of the support bladder (330) and is filled with paraffin wax (332) to enhance the stability of the fixation bladder (310). The placement cavity is an annular structure and is located outside the air column (331). The placement cavity is filled with paraffin wax (332) to enhance the stability of the fixation bladder (310).

8. The engine spindle contact testing device as described in claim 7, characterized in that, Each of the support bags (330) is fixed with a thermocouple detector at one end near the mandrel (003). The thermocouple detector is used to detect the temperature of the mandrel (003) when the roller (001) is rotating at different speeds.

9. The engine spindle contact testing device as described in claim 8, characterized in that, Each of the support capsules (330) has a set of position capsules (340) fixed on the outer side of one end near the spindle (003). Each set of position capsules (340) includes two position capsules (340) arranged vertically. The position capsules (340) are spherical capsule structures.

10. The engine spindle contact testing device as described in claim 9, characterized in that, Multiple adjustment bladders (350) are fixed on the outside of the fixed bladder (320). The adjustment bladder (350) has a ring structure and corresponds one-to-one with each set of support bladders (330). It is used to cooperate with the position bladder (340) to achieve fine adjustment of the position of the thermocouple detection point.

Images