A roundness meter leveling and centering device

Abstract

This invention provides a roundness meter leveling and centering device, comprising: a tooling base; an adjusting seat; a tooling upper plate disposed on the upper end of the adjusting seat; a centering mechanism disposed between the tooling base and the adjusting seat, used to push the adjusting seat to move horizontally and achieve centering; and a leveling mechanism for adjusting the inclination of the tooling upper plate. Two leveling mechanisms are arranged at 90 degrees. Each leveling mechanism includes a first screw assembly mounted on the tooling base and a hinge seat hinged to the adjusting seat. A first push rod is provided between the first screw assembly and the hinge seat, and a second push rod is provided between the hinge seat and the tooling upper plate. The first push rod and the second push rod are located on opposite sides of the hinge seat's rotation axis and form a lever structure. This roundness meter leveling and centering device is compact, has high adjustment accuracy, good stability, and is easy to operate.

Description

Technical Field

[0001] This invention relates to a roundness meter, and more particularly to a leveling and centering device for the roundness meter. Background Technology

[0002] A roundness tester is a precision measuring instrument that uses a rotating shaft method to measure the roundness error of a workpiece. It has wide applications in machinery manufacturing, aerospace, automotive, and bearing production. Roundness testers come in two types: sensor-rotary and table-rotary. During measurement, the workpiece must be installed concentrically with a precision shaft system, which drives an inductive length sensor or table to perform precise circular motion. In high-precision machining, the shape accuracy requirements for precision parts such as holes and shafts are often on the order of tens of nanometers. The measurement accuracy of the roundness tester directly affects the quality and reliability of these precision parts.

[0003] The self-aligning and leveling table is a key component of the roundness meter. Connected to the rotating spindle, it is primarily used to adjust the eccentricity and tilt of the workpiece being measured (i.e., self-alignment and leveling). These adjustments are extremely minor, and the precision and accuracy of the leveling table directly affect the overall measurement accuracy of the roundness meter. When measuring high-precision rotating parts, the geometric axis of the workpiece and the axis of rotation are neither coincident nor at an angle, leading to nonlinearity in the data sampling model. If the sampled data is still calculated based on the data points of the theoretical circle, errors will occur. Therefore, the leveling accuracy directly affects the measurement accuracy of the roundness meter.

[0004] The existing roundness tester's table leveling device mainly adopts the following structural schemes: The wedge-block leveling mechanism utilizes the relative sliding of wedge-shaped blocks to convert horizontal displacement into vertical lifting, thereby adjusting the tilt angle of the worktable. The advantages of this mechanism are its simple structure, low manufacturing cost, and ability to withstand large loads. However, its disadvantages are also apparent: limited adjustment accuracy, high friction during block sliding leading to jamming and backlash, and lateral wobbling during adjustment affecting stability, making it difficult to meet the demands of high-precision measurement.

[0005] The gear leveling mechanism uses gear transmission (such as bevel gears, worm gears, etc.) to convert the operator's rotary input into the lifting displacement of the worktable. The advantages of the gear leveling mechanism are high transmission accuracy, the ability to reduce speed and increase force, and labor-saving operation. However, its disadvantages are that gear transmission has inherent tooth backlash, which can cause backlash errors during reverse adjustment. In addition, the gear machining accuracy requirements are high, resulting in relatively high manufacturing costs.

[0006] Meanwhile, in most current roundness testers, the centering and leveling mechanisms are spatially interconnected, and their motion transmission paths intersect. Specifically, when the operator adjusts the centering mechanism to eliminate radial eccentricity of the workpiece, the initially adjusted tilt angle inevitably changes; conversely, adjusting the leveling mechanism to change the tilt angle of the workpiece end face will also cause a translation of the workpiece's rotation center. This coupling effect prevents centering and leveling from being completed independently and sequentially. Operators must repeatedly iterate and correct between the two, resulting in a cumbersome and time-consuming process that heavily relies on the operator's experience, making it difficult to achieve rapid and accurate one-time centering and leveling. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a roundness meter leveling and centering device that is compact in structure, has high adjustment accuracy, good stability and is easy to operate.

[0008] This invention provides a leveling and centering device for a roundness meter, comprising: Tooling base 1, wherein the tooling base 1 has an installation cavity with an open upper end; Adjustment seat 2 is disposed within the mounting cavity; The upper tooling plate 3 is located at the upper end of the adjusting seat 2. A tension spring assembly 8 is provided between the upper tooling plate 3 and the tooling base 1, which gives the upper tooling plate 3 a downward movement tendency. A self-aligning mechanism 4 is disposed between the tooling base 1 and the adjusting seat 2, and is used to push the adjusting seat 2 to move horizontally and achieve self-alignment. There are two self-aligning mechanisms 4 arranged at 90 degrees. A leveling mechanism 5 is disposed between the adjusting seat 2 and the upper platen 3 of the tooling, and is used to adjust the inclination of the upper platen 3 of the tooling; there are two leveling mechanisms 5 arranged at 90 degrees; the leveling mechanism 5 includes a first screw assembly 51 mounted on the tooling base 1 and a hinge seat 52 hinged to the adjusting seat 2, a first push rod 53 is provided between the first screw assembly 51 and the hinge seat 52, and a second push rod 54 is provided between the hinge seat 52 and the upper platen 3 of the tooling, the first push rod 53 and the second push rod 54 are located on both sides of the pivot of the hinge seat 52 and form a lever structure.

[0009] Furthermore, the rotation axis of the hinge 52 is perpendicular to both the axis of the tooling base 1 and the axis of the first screw assembly 51.

[0010] Furthermore, a plurality of first support components are provided between the bottom of the mounting cavity and the bottom of the adjusting seat 2 to achieve floating installation of the adjusting seat 2, and a plurality of second support components are provided between the top surface of the adjusting seat 2 and the tooling plate 3 to achieve floating installation of the tooling plate 3.

[0011] Furthermore, there are three of each of the first and second support components, which are evenly distributed circumferentially.

[0012] Furthermore, the first support assembly and the second support assembly include two supports and a steel ball disposed between the two supports.

[0013] Furthermore, the second support component is inclined toward the axis of the adjustment seat 2.

[0014] Furthermore, the first support assembly includes a first lower support 94 installed on the bottom surface of the mounting cavity and a first upper support 96 installed on the lower end of the adjusting seat 2, with a first steel ball 95 provided between the first lower support 94 and the first upper support 96.

[0015] Furthermore, the second support assembly includes a second lower support 91 mounted on the top of the adjusting seat 2 and a second upper support 93 disposed at the lower end of the tooling upper plate 3. The second lower support 91 and the second upper support 93 are inclined inward and a second steel ball 92 is provided between them.

[0016] Furthermore, the two self-aligning mechanisms 4 and the two leveling mechanisms 5 are distributed at equal angles around the axis of the tooling base 1.

[0017] Furthermore, the self-aligning mechanism 4 includes a second screw assembly 41 mounted on the tooling base 1. The axis of the second screw assembly 41 is perpendicular to and intersects the axis of the tooling base 1. A third push rod 42 is provided between the second screw assembly 41 and the adjusting seat 2.

[0018] Furthermore, the side wall of the adjusting seat 2 is provided with a first hole 201 facing the second screw assembly 41 and used to accommodate the third push rod 42. The end of the third push rod 42 is an arc-shaped surface and contacts the end of the first hole 201 and can be deflected.

[0019] Furthermore, the axis of the first screw assembly 51 is perpendicular to and intersects the axis of the tooling base 1.

[0020] Furthermore, the axis of the adjusting seat 2 is located in the plane formed by the axes of the first push rod 53 and the second push rod 54.

[0021] Furthermore, the second push rod 54 is tilted.

[0022] Furthermore, the contact point between the first push rod 53 and the hinge seat 52 is the first contact point, and the contact point between the second push rod 54 and the hinge seat 52 is the second contact point. The distance from the first contact point to the axis of rotation of the hinge seat is greater than the distance from the second contact point to the axis of rotation of the hinge seat.

[0023] Furthermore, the first screw assembly 51, the hinge seat 52, and the tooling plate 3 are provided with positioning grooves that can accommodate the end of the first push rod 53 or the second push rod 54 and achieve positioning. The ends of the first push rod 53 and the second push rod 54 are arc-shaped surfaces and can be deflected within the positioning grooves.

[0024] Furthermore, the positioning groove is a conical hole or an arc-shaped hole.

[0025] Furthermore, the first end of the second screw assembly 41 on the self-aligning mechanism 4 and / or the first screw assembly 51 on the leveling mechanism 5 is floatingly mounted with a limiting sleeve 514 via an elastic element 515. The inner diameter of the limiting sleeve 514 is larger than the diameter of the first push rod 53 or the third push rod 42 on the self-aligning mechanism and can allow the first push rod 53 or the third push rod 42 to pass through. When the first push rod 53 or the third push rod 42 deflects to contact the limiting sleeve, it can drive the limiting sleeve 514 to deflect and generate deflection resistance.

[0026] Furthermore, the first screw assembly 51 or the second screw assembly 41 includes a fixed base 511 and a screw 513 threadedly connected to the fixed base 511. The axis of the screw 513 is perpendicular to and intersects the axis of the tooling base 1. A mounting base 5131 is fixed to the first end of the screw 513. A mounting hole is provided at the end of the mounting base 5131. A positioning groove is provided on the end face of the mounting hole. The limiting sleeve 514 is disposed in the mounting hole and there is a gap between its outer wall and the inner wall of the mounting hole. The elastic element 515 is a spring and is disposed between the mounting hole and the limiting sleeve 514.

[0027] Furthermore, a threaded sleeve 512 is installed on the fixed base 511, and the screw 513 is threadedly connected inside the threaded sleeve 512.

[0028] Furthermore, the tooling base 1 is provided with an elastic component 7, which causes the adjusting seat 2 to tend to move closer to the two self-aligning mechanisms 4.

[0029] Furthermore, the elastic force between the elastic component 7 and the adjusting seat 2 is adjustable.

[0030] Furthermore, the elastic component 7 includes an adjusting bolt 71 disposed on the side wall of the tooling base 1 and an elastic push rod 72 disposed at the end of the adjusting bolt 71. The end of the elastic push rod 72 contacts the adjusting seat 2 and can push the adjusting seat 2 to move toward the two self-aligning mechanisms 4.

[0031] Furthermore, the angle between the axis of the adjusting bolt 71 and the two self-aligning mechanisms 4 is equal.

[0032] Furthermore, the side wall of the adjusting seat 2 is provided with a third hole for accommodating the elastic push rod 72. The axis of the third hole is perpendicular to and intersects the axis of the adjusting seat 2, and the included angle between the third hole and the two self-aligning mechanisms 4 is equal. The end of the elastic push rod is in contact with the end of the third hole.

[0033] Furthermore, movable parts are provided between the tooling base 1 and the adjusting seat 2, and between the adjusting seat 2 and the tooling upper plate 3. The movable parts can move radially and are connected to the tooling base 1, the adjusting seat 2, and the tooling upper plate 3 through a stop pin assembly, and are used to restrict the adjusting seat 2 and the tooling upper plate 3 from circumferential rotation.

[0034] Furthermore, the movable component is annular.

[0035] Furthermore, a first movable member 61 is radially slidably mounted on the bottom surface of the mounting cavity. The side wall of the first movable member 61 is provided with two coaxial first stop pins 612 and two coaxial second stop pins. The tooling base 1 is provided with third stop pins that respectively contact the two first stop pins. The bottom of the adjusting seat 2 is provided with fourth stop pins that respectively contact the two second stop pins.

[0036] Furthermore, the included angle between the first stop pin and the second stop pin is 90 degrees.

[0037] Furthermore, the sliding direction of the first movable member 61 is parallel to the direction of the elastic force generated by the elastic component 7 on the tooling base 1 on the adjusting seat.

[0038] Furthermore, the sliding direction of the first movable member 61 is equal to the angle between the two self-aligning mechanisms 4.

[0039] Furthermore, the top surface of the adjusting seat 2 is radially slidably equipped with a second movable member 62. The side wall of the second movable member 62 is provided with two coaxial fifth stop pins 622 and two coaxial sixth stop pins. The bottom surface of the tooling plate 3 is provided with a seventh stop pin 31 that respectively contacts the two fifth stop pins. The top of the adjusting seat 2 is provided with an eighth stop pin 21 that respectively contacts the two sixth stop pins.

[0040] Furthermore, the included angle between the fifth stop pin and the sixth stop pin is 90 degrees.

[0041] Furthermore, the sliding direction of the second movable member 62 is parallel to the direction of the elastic force generated by the elastic component 7 on the tooling base 1 on the adjusting seat.

[0042] Furthermore, the sliding direction of the second movable member 62 is equal to the included angle between the two self-aligning mechanisms 4.

[0043] This invention relates to a roundness meter leveling and self-aligning device, which distributes self-aligning and leveling functions to different levels. The self-aligning mechanism acts between the fixture base and the adjusting seat, directly pushing the adjusting seat to move horizontally; while the leveling mechanism acts between the adjusting seat and the upper plate of the fixture, controlling the tilt of the upper plate. The layered structure ensures that horizontal movement along the X or Y axis does not directly affect the tilt of the upper plate. Compared to traditional integrated structures, mutual interference during adjustment is significantly reduced, and operation is more intuitive. The leveling mechanism uses a lever structure consisting of a hinge and a push rod, which can reduce or increase the feed amount of the screw. This results in a more delicate tilt response of the upper plate when the operator rotates the screw, avoiding the jerking or overshoot caused by excessive friction when directly pushing with a traditional inclined block. This significantly improves the resolution and feel of manual leveling. This invention's roundness meter leveling and self-aligning device is compact, has high adjustment accuracy, good stability, and is easy to operate. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the roundness meter leveling and centering device of the present invention; Figure 2 This is an exploded structural diagram of the roundness meter leveling and centering device of the present invention; Figure 3 This is a cross-sectional view of the roundness meter leveling and centering device of the present invention; Figure 4 This is a schematic diagram of the installation of the second movable component of the roundness meter leveling and centering device of the present invention; Figure 5 This is a schematic diagram of the installation of the first movable component of the roundness meter leveling and centering device of the present invention; Figure 6 This is a cross-sectional view of the roundness meter leveling and centering device of the present invention; Figure 7 This is a schematic diagram of the support assembly of the roundness meter leveling and centering device of the present invention; Figure 8 This is a schematic diagram of the installation of the centering mechanism of the roundness meter leveling and centering device of the present invention; Figure 9 This is a schematic diagram of the installation of the leveling mechanism of the roundness meter leveling and centering device of the present invention; Figure 10 This is a schematic diagram of the hinge seat of the roundness meter leveling and centering device of the present invention; Figure 11 This is a schematic diagram showing the connection between the hinge seat and the push rod of the roundness meter leveling and centering device of the present invention; Figure 12 This is a cross-sectional view of the screw assembly of the roundness meter leveling and self-aligning device of the present invention; Figure 13 This is an exploded structural diagram of the screw assembly of the roundness meter leveling and centering device of the present invention.

[0045] In the diagram: 1. Fixture base; 2. Adjustment seat; 3. Fixture upper plate; 4. Self-aligning mechanism; 5. Leveling mechanism; 7. Elastic component; 8. Tension spring assembly; 51. First screw assembly; 52. Hinge seat; 53. First push rod; 54. Second push rod; 41. Second screw assembly; 42. Third push rod; 91. Second lower support. 92. Second steel ball; 93. Second upper support; 94. First lower support; 95. First steel ball; 96. First upper support; 511. Fixed seat; 512. Threaded sleeve; 513. Screw; 5131. Mounting seat; 514. Limit sleeve; 515. Elastic element; 516. Rotary cap; 71. Adjusting bolt; 72. Elastic top rod; 21. Eighth stop pin; 31. Seventh stop pin; 61. First movable part; 62. Second movable part; 612. First stop pin; 620. Strip hole; 622. Fifth stop pin; 201. First hole body; 202. Second hole body; 203. Third hole body; 301. Third positioning groove; 5130. Fourth positioning groove; 521. Second positioning groove; 522. First positioning groove. Detailed Implementation

[0046] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0047] See Figures 1-13 The present invention provides a roundness meter leveling and centering device, which includes a tooling base 1, an adjusting seat 2, a tooling upper plate 3, a centering mechanism 4 and a leveling mechanism 5; The tooling base 1 serves as the main body, which can be connected to the spindle and rotate. The tooling base 1 has an installation cavity with an open top.

[0048] The adjusting seat 2 is located inside the mounting cavity and can move radially.

[0049] The upper tooling plate 3 is located at the upper end of the adjusting seat 2. Specifically, there are three support points distributed in a triangle on the top of the adjusting seat 2. The upper tooling plate 3 is located on the three support points and is located at the open end of the mounting cavity, serving as a platform surface for placing the workpiece to be inspected. A tension spring assembly 8 is provided between the upper tooling plate 3 and the tooling base 1. This tension spring assembly 8 gives the upper tooling plate 3 a downward movement tendency and includes multiple tension springs.

[0050] The self-aligning mechanism 4 is located between the tooling base 1 and the adjusting seat 2. It is used to push the adjusting seat 2 to move horizontally, thereby achieving self-alignment. There are two self-aligning mechanisms 4 arranged at 90 degrees, that is, arranged at 90 degrees around the axis of the tooling base 1. They are used to adjust the movement in two vertical directions on the horizontal plane, that is, to adjust the horizontal movement in the X-axis and Y-axis directions. The end of the self-aligning mechanism 4 is provided with an operating end (i.e., a rotating cap 516) for self-aligning operation.

[0051] A leveling mechanism 5 is disposed between the adjusting seat 2 and the upper platen 3 of the tooling, and is used to adjust the inclination of the upper platen 3 of the tooling. There are two leveling mechanisms 5 arranged at 90 degrees, that is, arranged at 90 degrees around the axis of the adjusting seat 2. The leveling mechanism 5 includes a first screw assembly 51 mounted on the tooling base 1 and a hinge seat 52 hinged to the adjusting seat 2. The rotation axis of the hinge seat 52 is perpendicular to the axis of both the tooling base 1 and the axis of the first screw assembly 51. A first push rod 53 is provided between the first screw assembly 51 and the hinge seat 52. A second push rod 54 is provided between the hinge seat 52 and the upper platen 3 of the tooling. The first push rod 53 and the second push rod 54 are located on both sides of the rotation axis of the hinge seat 52 and form a lever structure. The end of the leveling mechanism is provided with an operating end for leveling operation.

[0052] This application assigns the centering and leveling functions to different levels. The centering mechanism 4 acts between the tooling base 1 and the adjusting seat 2, directly pushing the adjusting seat 2 to move horizontally; while the leveling mechanism 5 acts between the adjusting seat 2 and the tooling upper plate 3, controlling the tilt of the tooling upper plate. This layered structure ensures that when moving horizontally along the X-axis or Y-axis, it will not directly affect the tilt state of the upper plate. Compared with the traditional integrated structure, the mutual interference during adjustment is significantly reduced, and the operation is more intuitive.

[0053] During operation, the first screw assembly 51 drives the first push rod 53 to rotate, which in turn drives the hinge seat 52 to rotate. After passing through the second push rod 54, the upper plate of the tooling is tilted, thereby adjusting the tilt.

[0054] The leveling mechanism of this application adopts a lever structure consisting of a hinge and push rods. Since the two push rods are located on both sides of the hinge shaft, the feed amount of the screw can be reduced or increased by adjusting the ratio of the lever arms on both sides. This makes the tilt response of the tooling plate more delicate when the operator rotates the screw, avoiding the jerking or overshoot caused by excessive friction when the traditional inclined block is directly pushed. This significantly improves the resolution and feel of manual leveling.

[0055] The two leveling mechanisms are arranged at a 90-degree angle. One leveling mechanism is responsible for tilting in the X-axis direction, and the other is responsible for tilting in the Y-axis direction. When adjusting one screw, the tilting state in the other direction is not disturbed, realizing orthogonal decoupling adjustment, avoiding the problem of linkage offset, and improving the accuracy and efficiency of leveling.

[0056] In this embodiment, a second hole 202 is provided on the side wall of the adjusting seat 2, and the hinge seat and the first push rod are located in the second hole 202.

[0057] The upper plate of the tooling forms a stable three-point support plane through three fulcrums. At the same time, the downward preload provided by the tension spring assembly ensures that the second push rod and the upper plate of the tooling, as well as the hinge and the first push rod, always maintain close contact. Under the tension of the tension spring assembly, the entire lever transmission chain is always in a unidirectional force state. Even when the screw is finely adjusted in the reverse direction, due to the presence of spring tension, there will be no backlash error between the hinge and the push rod caused by thread clearance or mechanical clearance. This allows the leveled state to remain stable for a long time. When the roundness meter rotates at high speed for measurement, the worktable will not have slight displacement due to vibration.

[0058] In this application, the axis of the first screw assembly 51 is perpendicular to and intersects the axis of the tooling base 1, which makes the adjustment coordinate system formed by the two leveling mechanisms completely coincide with the rectangular coordinate system of the roundness measurement data. When the operator adjusts the tilt in the X-axis direction, there is almost no interference to the measurement reference in the Y-axis direction, avoiding the generation of eccentric torque that would cause unnecessary translation of the workpiece center during leveling, reducing operation time and improving adjustment efficiency.

[0059] In this embodiment, the axis of the adjusting seat 2 is located in the plane formed by the axes of the first push rod 53 and the second push rod 54. At the same time, the second push rod 54 is inclined, specifically, its upper end is inclined outward, away from the center direction of the tooling plate. If the contact points of the first push rod, the hinge seat, the second push rod and the tooling plate are not in the same plane, a spatial force system will be formed. At this time, the hinge seat may produce a slight torsion or sway around the vertical axis after being subjected to force, causing the actual tilt direction of the tooling plate to deviate from the expected direction. This application makes the axes of the tooling base and the two push rods in the same plane, so that the entire force transmission path is constrained in a meridional plane passing through the center of rotation. When the screw pushes the first push rod, the end displacement trajectory of the second push rod is completely determined and predictable, ensuring high linearity between the leveling input and the tooling tilt angle output, and avoiding nonlinear coupling error.

[0060] Furthermore, by presetting an initial tilt angle for the second push rod, the relative sliding amount between the spherical surface at the top of the push rod and the bottom surface of the tool is minimized within the fine-tuning range, thus improving the response sensitivity during fine-tuning. At the same time, the tilted layout can optimize the pressure angle when the hinge rotates to its limit position, avoiding adjustment failure caused by self-locking or dead points when the lever mechanism approaches the horizontal or vertical limit position, thereby improving the stability and reliability of use.

[0061] In this application, the contact point between the first push rod 53 and the hinge seat 52 is the first contact point, and the contact point between the second push rod 54 and the hinge seat 52 is the second contact point. The distance from the first contact point to the hinge seat's rotation axis is greater than the distance from the second contact point to the hinge seat's rotation axis. This forms a deceleration and force-amplifying lever. Rotating the screw one revolution significantly reduces the actual tilting and lifting amount of the tooling upper plate, improving the leveling resolution. Simultaneously, the minute disturbances generated by the tooling upper plate are amplified by the lever, greatly attenuating the tangential force transmitted to the screw, enhancing the self-locking property of the reverse drive and improving operational stability.

[0062] Positioning grooves are provided on the first screw assembly 51, hinge seat 52, and tooling plate 3 to accommodate and position the ends of the first push rod 53 or the second push rod 54. The positioning grooves are tapered holes or arc-shaped holes. The ends of the first push rod 53 and the second push rod 54 are arc-shaped surfaces that can deflect within the positioning grooves. During the leveling process, the first push rod or the second push rod not only moves in a straight line but also experiences slight angular oscillations due to the rotation of the hinge seat. If cylindrical surface mating or planar hard contact is used, any slight deviation in machining perpendicularity or assembly eccentricity will cause the contact point to shift, resulting in jamming or edge stress concentration. The arc-shaped ends of this application form a ball joint in the tapered hole or arc-shaped groove. When the push rod deflects slightly, the arc-shaped surface can adaptively slide within the positioning groove and automatically find the optimal contact center. This greatly reduces the stringent machining requirements for the coaxiality and perpendicularity of the mounting holes of the three parts, reduces manufacturing costs, and ensures the smooth operation of the mechanism after assembly.

[0063] Specifically, the hinge seat 52 is provided with a first positioning groove 522 and a second positioning groove 521, which are used to install the second push rod 54 and the first push rod 53 respectively. The first positioning groove and the second positioning groove have an included angle. The bottom surface of the tooling plate is provided with a third positioning groove 301 facing the first positioning groove 522, and the end of the first screw assembly is provided with a fourth positioning groove 5130 facing the second positioning groove. The first push rod is located between the second positioning groove and the fourth positioning groove, and the second push rod is located between the first positioning groove and the third positioning groove.

[0064] In this application, the two self-aligning mechanisms 4 and the two leveling mechanisms 5 are distributed at equal angles around the axis of the tooling base 1, that is, the four mechanisms are set at equal angles, with 90 degrees between adjacent two; that is, the two self-aligning mechanisms are used to adjust the movement of the X-axis and Y-axis respectively, and the two leveling mechanisms are used to adjust the tilt angle in the X-axis and Y-axis directions respectively; during operation, the four degrees of freedom (X translation, Y translation, tilt around X, and tilt around Y) can be adjusted separately and independently, without worrying that the adjustment of one will destroy the already adjusted state of the other, thus achieving efficient decoupling operation, reducing the difficulty of operation, and improving the adjustment efficiency.

[0065] Multiple first support components are provided between the bottom of the mounting cavity and the bottom of the adjusting seat 2. The first support components enable the floating installation of the adjusting seat 2. Multiple second support components are provided between the top surface of the adjusting seat 2 and the upper platen 3 of the tooling. The second support components enable the floating installation of the upper platen 3 of the tooling. There are three first support components and three second support components, which are evenly distributed circumferentially. Specifically, the first support component and the second support component include two supports and a steel ball disposed between the two supports. In this embodiment, the second support component is inclined towards the axis of the adjusting seat 2. Specifically, its upper end is inclined inward.

[0066] The upper and lower layers each employ three circumferentially distributed steel ball support components, which precisely determine the spatial plane position of the adjustment seat relative to the base and the upper plate of the tooling relative to the adjustment seat, avoiding the over-constraint problem caused by traditional four-point or multi-point support. When the self-aligning mechanism or leveling mechanism pushes the component to move, unnecessary squeezing or pulling between the components will not occur due to processing or assembly errors, making the adjustment action smoother and greatly improving the sensitivity and resolution of the adjustment.

[0067] The upper second support component is tilted, and together with the gravity of the upper platen of the tooling and the tension of the tension spring, it forms a floating system with a stable reset tendency and allows free tilting. After the tilt adjustment is completed, the second support component can withstand the horizontal thrust and can stably support itself in the new position, maintain the tilt posture, avoid slippage in the tilted state, and improve the adjustment accuracy and reliability.

[0068] Specifically, the first support assembly includes a first lower support 94 installed on the bottom surface of the mounting cavity and a first upper support 96 installed on the lower end of the adjusting seat 2. A first steel ball 95 is provided between the first lower support 94 and the first upper support 96. The first support assembly is horizontally arranged as a whole, and the first steel ball 95 is rolled on the upper end of the first lower support 94. It can support the free movement of the adjusting seat 2 in the horizontal plane, ensuring that the self-aligning process is precise and smooth.

[0069] The second support assembly includes a second lower support 91 mounted on the top of the adjusting seat 2 and a second upper support 93 disposed at the lower end of the tooling upper plate 3. The second lower support 91 and the second upper support 93 are inclined inward and a second steel ball 92 is disposed between them. Specifically, the upper end of the second support assembly is inclined inward, and its axis coincides with the axis of the adjusting seat. It can generate an inward component force in the radial direction, thereby automatically providing radial constraint force when the tooling upper plate is tilted, and preventing the tooling upper plate from shifting or becoming unstable. The second steel ball 92 is rotatably disposed at the upper end of the second lower support 91.

[0070] In this application, the self-aligning mechanism 4 includes a second screw assembly 41 mounted on the tooling base 1. The axis of the second screw assembly 41 is perpendicular to and intersects the axis of the tooling base 1. A third push rod 42 is provided between the second screw assembly 41 and the adjusting seat 2. The second screw assembly 41 can drive the third push rod 42 to move, thereby pushing the adjusting seat 2 to move horizontally. In this application, a first hole 201 is provided on the side wall of the adjusting seat 2. The diameter of the first hole 201 is larger than the diameter of the third push rod, providing space for the deflection of the third push rod. The first hole faces the second screw assembly 41 and is used to accommodate the third push rod 42. The end of the third push rod 42 is an arc-shaped surface, which is perpendicular to the first hole. The end of body 201 contacts and can deflect; by setting the first hole body 201, the contact point between the third push rod 42 and the adjusting seat can be located near the center of the adjusting seat, thereby ensuring that the line of action of the thrust passes through the center of mass of the adjusting seat accurately, minimizing the deflection torque, and making the horizontal self-aligning motion more linear and stable; the arc-shaped end face of the third push rod 42 forms an adaptive fit with the inner wall of the first hole body 201, and can deflect slightly with the adjusting seat under the action of thrust, continuously maintaining normal contact, effectively eliminating lateral friction and jamming caused by installation errors or wear, ensuring that the self-aligning process is always in a low-resistance, high-precision dynamic balance state, and further improving the robustness of the system under complex working conditions.

[0071] Meanwhile, an elastic component 7 is provided on the tooling base 1. The elastic component makes the adjusting seat 2 tend to move closer to the two self-aligning mechanisms 4, thereby ensuring that the adjusting seat 2 automatically resets when no external force is applied, and thus achieves self-alignment in different directions on the horizontal plane. When any self-aligning mechanism applies a horizontal thrust, the elastic component 7 is compressed and stores elastic potential energy. After the thrust is removed, the energy is released to drive the adjusting seat 2 to reset in the opposite direction.

[0072] In this embodiment, the elastic force between the elastic component 7 and the adjusting seat 2 is adjustable. Specifically, the elastic component 7 includes an adjusting bolt 71 disposed on the side wall of the tooling base 1 and an elastic push rod 72 disposed at the end of the adjusting bolt 71. The end of the elastic push rod 72 contacts the adjusting seat 2 and can push the adjusting seat 2 to move closer to the two self-aligning mechanisms 4. The axis of the adjusting bolt 71 is equal to the angle between the two self-aligning mechanisms 4, that is, equal to the angle between the X-axis and the Y-axis. The elastic push rod includes a push rod body and a compression spring disposed on the push rod body. The compression spring contacts the adjusting bolt 71. By rotating the adjusting bolt, the compression amount of the compression spring can be adjusted, thereby realizing the thrust adjustment. The elastic component 7 continuously pushes the adjusting seat 2 toward the two self-aligning mechanisms 4, so that the contact point of the adjusting seat is always in close contact with the arc-shaped end face of the two third push rods 42. Therefore, regardless of whether the self-aligning screw moves forward or backward, the movement can be transmitted instantaneously, completely eliminating mechanical backlash.

[0073] Specifically, a third hole 203 is provided on the side wall of the adjusting seat 2 to accommodate the elastic push rod 72. The axis of the third hole 203 is perpendicular to and intersects the axis of the adjusting seat 2, and the included angle between the third hole and the two self-aligning mechanisms 4 is equal. The end of the elastic push rod contacts the end of the third hole, so that the contact point between the elastic push rod and the adjusting seat 2 is located close to the center of the adjusting seat 2, thereby reducing the eccentricity of the contact point and ensuring that the elastic restoring force always passes through the center of mass of the adjusting seat. This makes the reset movement strictly follow the axial symmetrical path, avoids rotational disturbance caused by lever arm deviation, and thus makes the reset process highly repeatable and directionally consistent.

[0074] In this application, a limiting sleeve 514 is floatingly mounted on the first end of the second screw assembly 41 on the self-aligning mechanism 4 and / or the first screw assembly 51 on the leveling mechanism 5 via an elastic element 515. The inner diameter of the limiting sleeve 514 is larger than the diameter of the first push rod 53 or the third push rod 42, allowing the first push rod 53 or the third push rod 42 to pass through. When the first push rod 53 or the third push rod 42 deflects to contact the limiting sleeve, it can drive the limiting sleeve 514 to deflect and generate deflection resistance. A nut 516 is provided at the end of the second end of the first screw assembly and the second screw assembly to drive the screw to rotate and realize the rotation adjustment operation. The nut 516 is located outside the tooling base 1.

[0075] When the first or third push rod is within the normal deflection range, its outer wall does not contact the inner hole of the limiting sleeve. At this time, the operation is relatively light, and only the friction of the threaded pair needs to be overcome, which is suitable for high-sensitivity fine adjustment. When the deflection angle of the first or third push rod increases to near the limit, its outer circle begins to contact the inner hole of the limiting sleeve. The first or third push rod drives the limiting sleeve to deflect together, thereby compressing or stretching the elastic element. At this time, the resistance will suddenly increase, indicating that it has approached the adjustment limit. This effectively prevents the mechanism from overshooting and workpiece from collision caused by blind adjustment.

[0076] In this embodiment, the first screw assembly 51 or the second screw assembly 41 includes a fixed seat 511 and a screw 513 threadedly connected to the fixed seat 511. The fixed seat 511 on the first screw assembly is fixed to the side wall of the adjusting seat, and the fixed seat on the second screw assembly is fixed to the side wall of the tooling base. In the initial state, the axis of the screw 513 is perpendicular to and intersects the axis of the tooling base 1. Specifically, the axis of the screw on the first screw assembly 51 is perpendicular to and intersects the axis of the adjusting seat, while the axis of the screw on the second screw assembly is perpendicular to and intersects the axis of the tooling base. A mounting seat 5131 is fixed to the first end of the screw 513. The end of the mounting seat 5131 is provided with a mounting hole. The end face of the mounting hole is provided with a positioning groove. A limiting sleeve 514 is disposed in the mounting hole. There is a gap between its outer wall and the inner wall of the mounting hole, and there is a deflection space. The elastic element 515 is a spring and is disposed between the mounting hole and the limiting sleeve 514.

[0077] Specifically, at least two spring mounting holes are symmetrically arranged on the inner wall of the mounting hole, and a corresponding spring mounting hole is provided on the outer wall of the limiting sleeve. The elastic element is arranged between the inner wall of the corresponding mounting hole and the spring mounting hole on the outer wall of the limiting sleeve to realize the floating installation of the limiting sleeve.

[0078] To improve transmission accuracy and reduce manufacturing costs, a threaded sleeve 512 is installed on the fixed base 511 and fixed by a pin to prevent circumferential rotation. An internal thread is provided inside the threaded sleeve, and the screw 513 is threadedly connected inside the threaded sleeve 512. By setting the threaded sleeve, the thread length is increased, the load-bearing capacity and fitting accuracy of the threaded pair are improved, and the threaded sleeve can be replaced separately after wear, thus reducing manufacturing and maintenance costs.

[0079] To further improve adjustment accuracy, this application provides movable parts between the tooling base 1 and the adjusting seat 2, and between the adjusting seat 2 and the tooling upper plate 3. The movable parts are capable of radial movement and are connected to the tooling base 1, the adjusting seat 2, and the tooling upper plate 3 through a stop pin assembly. Specifically, the movable part located between the tooling base 1 and the adjusting seat 2 is connected to the tooling base 1 and the adjusting seat 2 through the stop pin assembly to prevent the adjusting seat 2 from rotating circumferentially; the movable part located between the adjusting seat 2 and the tooling upper plate 3 is connected to the adjusting seat 2 and the tooling upper plate 3 through the stop pin assembly to prevent the tooling upper plate from rotating circumferentially.

[0080] The aforementioned moving part is circular, and its sliding direction is parallel to the direction of the elastic force generated by the elastic component on the adjusting seat.

[0081] Specifically, a first movable member 61 is radially (horizontally) slidably mounted on the bottom surface of the mounting cavity. Its sliding direction is parallel to the elastic force direction of the elastic component. In this embodiment, the sliding direction of the first movable member 61 is equal to the angle between the two self-aligning mechanisms 4. Two coaxial first stop pins 612 and two coaxial second stop pins are provided on the side wall of the first movable member 61. The first stop pins and the second stop pins are both horizontally arranged, and the angle between them is 90 degrees, forming a cross-shaped structure. A third stop pin is provided on the tooling base 1, which contacts the two first stop pins respectively. The third stop pin is vertically fixed on the tooling base 1, and forms an angle with the horizontal first stop pin, and can make contact. At the same time, a fourth stop pin is provided at the bottom of the adjusting seat 2, which contacts the two second stop pins respectively. The fourth stop pin is vertically fixed on the bottom surface of the adjusting seat 2, and forms an angle with the horizontal second stop pin, and can make contact. Through the above structure, the adjusting seat 2 can move radially but cannot rotate circumferentially.

[0082] A second movable member 62 is radially slidably mounted on the top surface of the adjusting seat 2. Its sliding direction is parallel to the thrust direction of the elastic component. A strip-shaped hole 620 for the second push rod to pass through is provided on the second movable member 62. In this embodiment, the sliding direction of the second movable member 62 is equal to the angle between the two self-aligning mechanisms 4. Two coaxial fifth stop pins 622 and two coaxial sixth stop pins are provided on the side wall of the second movable member 62. The fifth and sixth stop pins are both horizontally arranged, and the angle between them is 90 degrees, forming a cross-shaped structure. A seventh stop pin 31 is provided on the bottom surface of the tooling upper plate 3, which contacts the two fifth stop pins respectively. The seventh stop pin is vertically fixed on the bottom surface of the tooling upper plate, forms an angle with the horizontal fifth stop pin, and can contact each other. An eighth stop pin 21 is provided on the top surface of the adjusting seat 2, which contacts the two sixth stop pins respectively. The eighth stop pin is vertically fixed on the top surface of the adjusting seat 2, forms an angle with the horizontal sixth stop pin, and can contact each other. With the above structure, the tooling upper plate can be tilted but cannot rotate circumferentially.

[0083] The aforementioned first movable component and the stop pins (first stop pin, second stop pin, fifth stop pin, and sixth stop pin) on the second movable component form a cross structure, and their direction is at an angle to the four adjustment mechanisms (two self-aligning mechanisms and two leveling mechanisms), forming a star-shaped structure.

[0084] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A leveling and centering device for a roundness meter, characterized in that, include: Tooling base, wherein the tooling base has an installation cavity with an open upper end; An adjustment seat is disposed within the mounting cavity; The upper tooling plate is located at the upper end of the adjusting seat, and a tension spring assembly is provided between the upper tooling plate and the tooling base to give the upper tooling plate a downward movement tendency. A self-aligning mechanism is disposed between the tooling base and the adjusting seat, and is used to push the adjusting seat to move horizontally and achieve self-alignment. There are two self-aligning mechanisms arranged at 90 degrees. A leveling mechanism is used to adjust the tilt of the upper plate of the tooling; there are two leveling mechanisms arranged at 90 degrees; the leveling mechanism includes a first screw assembly mounted on the tooling base and a hinge seat hinged to the adjusting seat, a first push rod is provided between the first screw assembly and the hinge seat, and a second push rod is provided between the hinge seat and the upper plate of the tooling, the first push rod and the second push rod are located on both sides of the pivot of the hinge seat and form a lever structure.

2. The roundness meter leveling and centering device as described in claim 1, characterized in that: Multiple first support components are provided between the bottom of the mounting cavity and the bottom of the adjusting seat to achieve floating installation of the adjusting seat. Multiple second support components are provided between the top surface of the adjusting seat and the upper plate of the tooling to achieve floating installation of the upper plate of the tooling. The second support components are inclined towards the axial direction of the adjusting seat.

3. The roundness meter leveling and centering device as described in claim 1, characterized in that: The self-aligning mechanism includes a second screw assembly mounted on the tooling base. The axis of the second screw assembly is perpendicular to and intersects the axis of the tooling base. A third push rod is provided between the second screw assembly and the adjusting seat.

4. The roundness meter leveling and centering device as described in claim 3, characterized in that: The side wall of the adjusting seat has a first hole facing the second screw assembly and used to accommodate the third push rod. The end of the third push rod is an arc-shaped surface that contacts the end of the first hole and can be deflected.

5. The roundness meter leveling and centering device as described in claim 1, characterized in that: The axis of the adjusting seat is located in the plane formed by the axes of the first push rod and the second push rod.

6. The roundness meter leveling and centering device as described in claim 1, characterized in that: The contact point between the first push rod and the hinge is the first contact point, and the contact point between the second push rod and the hinge is the second contact point. The distance from the first contact point to the axis of rotation of the hinge is greater than the distance from the second contact point to the axis of rotation of the hinge.

7. The roundness meter leveling and centering device as described in claim 1, characterized in that: The first screw assembly, the hinge seat, and the upper plate of the tooling are provided with positioning grooves that can accommodate the end of the first push rod or the second push rod and achieve positioning. The ends of the first push rod and the second push rod are arc-shaped surfaces and can deflect within the positioning grooves.

8. The roundness meter leveling and centering device as described in claim 1, characterized in that: The first end of the second screw assembly on the self-aligning mechanism and / or the first screw assembly on the leveling mechanism is floatingly mounted with a limiting sleeve via an elastic element. The inner diameter of the limiting sleeve is larger than the diameter of the first push rod or the third push rod on the self-aligning mechanism and can allow the first push rod or the third push rod to pass through. When the first push rod or the third push rod deflects to contact the limiting sleeve, it can drive the limiting sleeve to deflect and generate deflection resistance.

9. The roundness meter leveling and centering device as described in claim 1, characterized in that: The tooling base is provided with an elastic component, which causes the adjusting seat to tend to move closer to the two self-aligning mechanisms.

10. The roundness meter leveling and centering device as described in claim 1, characterized in that: Movable parts are provided between the tooling base and the adjusting seat, and between the adjusting seat and the tooling upper plate. The movable parts can move radially, and their movement direction is parallel to the direction of the elastic force generated by the elastic component on the tooling base on the adjusting seat. The movable parts are connected to the tooling base, the adjusting seat, and the tooling upper plate through a stop pin assembly, and are used to restrict the adjusting seat and the tooling upper plate from circumferential rotation.

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