A gasket coaxial point re-measurement mechanism

Abstract

The present invention discloses a gasket coaxial point re-measurement mechanism, comprising a mounting base, a guide rod cylinder, a mounting transition block, a gasket pressing block, and a sensor mounting base plate; the sensor mounting base plate is used to place an adjustment gasket, and the gasket pressing block is used to compress the adjustment gasket; a sensor mounting member is respectively provided on the upper and lower parts of the sensor mounting base plate, each of which is provided with a displacement sensor, and the probes of the two displacement sensors are arranged facing each other and are respectively located on both sides of the adjustment gasket, wherein the displacement sensors are pneumatically retractable displacement sensors, and the probes of the two displacement sensors are extended and contact the adjustment gasket to achieve the measurement purpose. The re-measurement mechanism of the present invention is provided with two displacement sensors, and self-reference coaxial measurement is performed without requiring height position, and single-point upper and lower synchronous measurement is performed, the structure is simple, and there is no need to consider the systematic error in the measurement process, thereby improving the qualified rate.

Description

Technical Field

[0001] The invention relates to the field of gasket measuring equipment, and in particular to a gasket coaxial point re-measurement mechanism. Background Art

[0002] During the production process of automobile gearboxes, in order to ensure product accuracy, it is necessary to measure the adjusting shims at the tapered roller bearing ends of the automobile gearboxes.

[0003] The size of the bearing clearance directly affects the performance of the transmission. Excessive clearance can cause the gear shaft to deviate from the center of the two bearing holes, resulting in improper gear meshing. Too little clearance can increase the working resistance of the shaft teeth and accelerate bearing wear, leading to serious transmission failure. Therefore, selecting the right adjustment shim and assembling it into the transmission is crucial to ensuring that the reserved clearance of the tapered bearing meets the product design requirements.

[0004] Because standard gaskets have inherent manufacturing errors, the selected gaskets must be measured and verified. In the past, direct measurement using a displacement sensor was often used. However, gaskets themselves have flatness errors, and direct measurement on a flat surface can result in unpredictable errors.

[0005] Currently, a displacement sensor is used for direct measurement, which cannot eliminate the error caused by poor flatness of the adjustment gasket, resulting in a high failure rate and scrap rate. Summary of the Invention

[0006] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a gasket coaxial point re-measurement mechanism to eliminate the error of adjusting the poor flatness of the gasket and improve the accuracy.

[0007] To this end, the present invention proposes a gasket coaxial point re-measurement mechanism, comprising a mounting base, a guide rod cylinder, a mounting transition block, a gasket pressing block, and a sensor mounting base. The sensor mounting base is disposed at the front end of the mounting base and is used to accommodate an adjustment gasket, and the gasket pressing block is used to compress the adjustment gasket. The sensor mounting base is C-shaped, with a sensor mounting member disposed at the top and bottom of the sensor mounting base, respectively. Each sensor mounting member is provided with a displacement sensor, and the probes of the two displacement sensors are disposed facing each other, one on each side of the adjustment gasket. The displacement sensors are pneumatically retractable displacement sensors, and the probes of the two displacement sensors extend to contact the adjustment gasket to achieve the measurement purpose.

[0008] Furthermore, a position detection module for monitoring the extension and retraction of the guide rod cylinder is provided on the mounting base, and the position detection module is connected to the displacement sensor signal.

[0009] Furthermore, the position detection module includes a sensing block and a proximity switch, the sensing block is connected to the mounting transition block, the proximity switch is arranged on the mounting base and is positioned relative to the sensing block, and the proximity switch is connected to the displacement sensor signal.

[0010] Furthermore, the position detection module further includes a mounting rod connected to the mounting base, and the sensing block is slidably disposed on the mounting rod.

[0011] Furthermore, two of the sensing blocks and two of the proximity switches are provided.

[0012] Furthermore, a flange bolt is provided at the front end of the installation transition block, and the flange bolt is located directly above the placement position of the adjustment gasket.

[0013] Furthermore, the installation transition block is floatingly connected to the gasket pressing block through a plurality of equal-height guide bolts.

[0014] Furthermore, a plurality of pairs of displacement sensors and a plurality of pairs of sensor mounting parts are provided on the sensor mounting base plate for performing multi-point measurement on the adjustment gasket.

[0015] Furthermore, the sensor mounting base plate is C-shaped, the lower portion of which is located under the gasket pressing block and is connected to the mounting base.

[0016] Furthermore, the guide rod cylinder is arranged on a mounting base, the mounting transition block is connected to the cylinder rod of the guide rod cylinder, and the gasket pressing block is connected to the lower end of the mounting transition block for pressing the adjustment gasket.

[0017] The gasket coaxial point re-measurement mechanism provided by the present invention, by setting two displacement sensors, performs coaxial measurement from a reference, has no requirements for height position, and performs synchronous upper and lower measurement of a single point. It has a simple structure and does not need to consider the systematic error in the measurement process, thereby improving the qualified rate; it provides a new, simple and effective idea for adjusting the gasket measurement thickness.

[0018] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the gasket coaxial point re-measurement mechanism of the present invention;

[0021] Figure 2 It is a front view of the gasket coaxial point re-measurement mechanism of the present invention;

[0022] Figure 3 It is a side view of the gasket coaxial point re-measurement mechanism of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the gasket coaxial point re-measurement mechanism of the present invention when an adjustment gasket is placed therein;

[0024] Figure 5 It is a structural schematic diagram of the gasket coaxial point re-measurement mechanism of the present invention.

[0025] Description of Reference Numerals

[0026] 1. Mounting base; 2. Guide rod cylinder; 3. Mounting transition block; 4. Equal height guide bolts; 5. Gasket clamping block; 6. Displacement sensor; 7. Sensor mounting piece; 8. Sensor mounting base; 9. Flange bolts; 10. Proximity switch; 11. Sensing block; 12. Mounting rod; 100. Adjusting gasket. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] like Figure 1 As shown, the gasket coaxial point re-measurement mechanism of the present invention includes: a mounting base 1, a guide rod cylinder 2, a mounting transition block 3, a gasket pressing block 5, a displacement sensor 6, a sensor mounting part 7, and a sensor mounting base plate 8.

[0029] Specifically, the mounting base 1 is L-shaped, the guide rod cylinder 2 is installed on the mounting base 1, the mounting transition block 3 is installed at the outer end of the cylinder rod of the guide rod cylinder 2, and the front end of the mounting transition block 3 is connected to the gasket clamping block 5; the guide rod cylinder 2 can drive the gasket clamping block 5 to move, and then the gasket 100 is clamped and adjusted by the gasket clamping block 5.

[0030] like Figure 1 The sensor mounting base plate 8 is fixedly arranged at the front end of the mounting base 1. The sensor mounting base plate 8 is C-shaped. The lower part of the sensor mounting base plate 8 is located on the lower side of the gasket pressing block 5 and is fixedly connected to the lower part of the mounting base 1 for placing the adjustment gasket 100. When measuring, the adjustment gasket 100 is placed between the sensor mounting base plate 8 and the gasket pressing block 5.

[0031] Among them, a sensor mounting part 7 is respectively set on the upper and lower parts of the sensor mounting base plate 8, and a displacement sensor 6 is set on each sensor mounting part 7. The displacement sensor 6 is set in the vertical direction and is consistent with the moving direction of the guide rod of the guide rod cylinder 2.

[0032] like Figure 4 、 Figure 5 As shown, the probes of the two displacement sensors 6 are arranged facing each other, and the displacement sensor 6 adopts a pneumatic retractable displacement sensor, whose probe can move along a straight line. At the same time, the product is measured by the distance the probe moves.

[0033] Among them, the displacement sensor 6 in this application uses the AX / 2.5 / PH-T sensor produced by Solartron. This type of displacement sensor is used in high-precision and reliable equipment. It can be used in applications where the resistive converter is unstable due to vibration and jitter. It can achieve maximum performance when powered at a frequency of 5kHz. It uses a stainless steel housing and bracket and has a protection level of IP65.

[0034] like Figures 1 to 3 As shown, a position detection module is installed on the base 1. The position detection module is used to monitor the extension and contraction of the guide rod cylinder 2 and can input a signal to the displacement sensor 6 so that the displacement sensor 6 starts measuring data.

[0035] The position detection module includes a mounting rod 12, a sensing block 11, and a proximity switch 10. The mounting rod 12 is set on the mounting base 1. The mounting rod 12 is located on one side of the guide rod cylinder 2. At the same time, two sensing blocks 11 are provided on the mounting rod 12. The sensing blocks 11 are connected to the mounting transition block 3 and move with it. A pair of proximity switches 10 are also provided on the mounting base 1. The proximity switches 10 are used to judge the position of the sensing blocks 11, and then judge the extension and retraction status of the guide rod cylinder 2.

[0036] Among them, since the stroke of the guide rod cylinder 2 in this application is relatively short, in order to improve the sensing accuracy, two sensing blocks 11 and two proximity switches 10 are provided, and the two proximity switches 10 sense the two sensing blocks 11 respectively.

[0037] When the thickness of the adjusting gasket 100 is measured, the cylinder rod of the guide rod cylinder 2 extends and drives the gasket pressing block 5 to press the adjusting gasket 100 against the upper side of the lower part of the sensor mounting base plate 8. At the same time, the guide rod cylinder 2 drives the sensing block 11 to move downward and is detected by the proximity switch 10. At this time, the proximity switch 10 simultaneously outputs signals to the two displacement sensors 6. After the displacement sensor 6 receives the signal, its probe end begins to extend and move toward the adjusting gasket 100.

[0038] When both displacement sensors 6 are in contact with the adjustment gasket 100 , the measurement is completed. The two displacement sensors 6 transmit the measured data to the data processing unit, which determines whether the thickness of the adjustment gasket is qualified.

[0039] The transition block 3 is also provided with a flange bolt 9, which is located at the lower front end of the transition block 3 and directly above the position of the adjustment washer 100. Since the sensor mounting base plate 8 is offset from the guide rod cylinder 2 in the front-to-back direction, the force centers of the two are not in a straight line.

[0040] Therefore, when the guide rod cylinder 2 drives the gasket pressing block 5 to move downward and press the adjustment gasket, the gasket pressing block 5 is prone to generate rotational torque, which cannot ensure that the adjustment gasket is placed flat during the test, and thus cannot ensure the accuracy of the measured data.

[0041] In this embodiment, if Figure 1 The transition block 3 is installed and connected to the gasket pressing block 5 in a floating manner through a number of equal-height guide bolts 4. The two have a certain range of movement, so that the gasket pressing block 5 can produce a small floating motion.

[0042] When the guide rod cylinder 2 drives the gasket pressing block 5 to move downward, the gasket pressing block 5 will adapt to the upper surface of the adjustment gasket 100. When the adjustment gasket 100 has a certain angle with the horizontal plane, the gasket pressing block 5 will also produce a small inclination angle to adapt to the adjustment gasket 100, so that the adjustment gasket 100 is compressed, which is convenient for the displacement sensor 6 to measure.

[0043] In another embodiment, multiple groups of displacement sensors 6 can be installed on the sensor mounting base plate 8 as needed to achieve multi-point measurement, and then the measured values ​​of the multi-point measurement are averaged to improve the measurement precision and accuracy.

[0044] The working principle and working process of the present invention are briefly described below with reference to the accompanying drawings.

[0045] During operation, the gasket is fed between the two sensors by other mechanisms. Under the push of the guide rod cylinder 2, the gasket pressing block 5 moves downward to press the adjustment gasket 100. At the same time, the sensing block 11 moves downward and is detected by the proximity switch 10. The proximity switch 10 determines that the guide rod cylinder 2 is in an extended state, and then outputs a signal to the displacement sensor 6. The probes of the two displacement sensors 6 are extended, and the sensor numbers are read to measure the thickness of the adjustment gasket.

[0046] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A gasket coaxial point re-measurement mechanism, characterized in that: It comprises a mounting base (1), a guide rod cylinder (2), a mounting transition block (3), a gasket pressing block (5), and a sensor mounting base plate (8); A position detection module for monitoring the extension and retraction of the guide rod cylinder (2) is provided on the mounting base (1), the position detection module comprising a sensing block (11) and a proximity switch (10), the sensing block (11) being connected to the mounting transition block (3), the proximity switch (10) being arranged on the mounting base (1) and being positioned relative to the sensing block (11), and the proximity switch (10) being connected to a displacement sensor (6) for signal communication; The guide rod cylinder (2) is arranged on the mounting base (1), the mounting transition block (3) is connected to the cylinder rod of the guide rod cylinder (2), and the gasket pressing block (5) is connected to the lower end of the mounting transition block (3) for pressing the adjustment gasket (100); The sensor mounting base (8) is arranged at the front end of the mounting base (1) and is used for placing an adjustment gasket (100); the gasket pressing block (5) is used for pressing the adjustment gasket (100); The sensor mounting base plate (8) is C-shaped, and a sensor mounting member (7) is respectively provided on the upper and lower parts of the sensor mounting base plate (8). A displacement sensor (6) is provided on each of the sensor mounting members (7), and the probes of the two displacement sensors (6) are arranged facing each other and are respectively located on both sides of the adjustment gasket (100). The displacement sensors (6) are pneumatically retractable displacement sensors, and the probes of the two displacement sensors (6) are extended and contact the adjustment gasket (100) to achieve the measurement purpose.

2. The gasket coaxial point re-measurement mechanism according to claim 1, characterized in that: The position detection module further comprises a mounting rod (12) connected to the mounting base (1), and the sensing block (11) is slidably arranged on the mounting rod (12).

3. The gasket coaxial point re-measurement mechanism according to claim 1, characterized in that: There are two of each of the induction block (11) and the proximity switch (10).

4. The gasket coaxial point re-measurement mechanism according to claim 1, characterized in that: A flange bolt (9) is provided at the front end of the installation transition block (3), and the flange bolt (9) is located directly above the placement position of the adjustment gasket (100).

5. The gasket coaxial point re-measurement mechanism according to claim 1, characterized in that: The installation transition block (3) is floatingly connected to the gasket pressing block (5) via a plurality of equal-height guide bolts (4).

6. The gasket coaxial point re-measurement mechanism according to claim 1, characterized in that: A plurality of pairs of displacement sensors (6) and a plurality of pairs of sensor mounting members (7) are arranged on the sensor mounting base plate (8) for performing multi-point measurement on the adjustment gasket (100).

7. The gasket coaxial point re-measurement mechanism according to claim 1, characterized in that: The sensor mounting base plate (8) is C-shaped, with its lower portion located on the lower side of the gasket pressing block (5) and connected to the mounting base (1).

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