Fixed-point detection device for logarithmic curve of outer diameter contour of rolling body

Abstract

The utility model relates to the technical field of rolling body contour detection, in particular to a rolling body outer diameter contour logarithmic curve fixed-point detection device. The reference baffle plate is rotatably connected with the stand column, so that the reference baffle plate has a detection pose; the V-shaped block is fixed on the reference baffle, and a V-shaped groove is formed in the V-shaped block; when the reference baffle is in the detection posture, the bottom plate, the stand column and the reference baffle form a triangular structure, the reference baffle abuts against the end face of one side of the to-be-detected rolling body for manufacturing the template, and the V-shaped groove abuts against the outer diameter surface of the to-be-detected rolling body for manufacturing the template so as to bear the to-be-detected rolling body for manufacturing the template. According to the rolling body outer diameter contour logarithmic curve detection device, the problem that the detection of the rolling body outer diameter contour logarithmic curve without an ideal logarithmic curve formula is inaccurate is solved, and the operation is relatively simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling body contour detection, in particular to a rolling body outer diameter contour logarithmic curve fixed-point detection device. Background Art

[0002] The outer diameter profile of a bearing rolling element is a key factor in rolling element design. Whether this profile meets design requirements significantly impacts bearing reliability, stability, and stress contact conditions. Therefore, accurate detection of the logarithmic curve of the outer diameter profile of a bearing rolling element is crucial.

[0003] During testing, there are some rolling elements that do not have an ideal logarithmic curve formula. When testing the logarithmic curve profile of the outer diameter of this part of the rolling element, the drawings often provide technical requirements for the profile depth of several or a dozen required points symmetrical about the length center. However, because conventional methods cannot detect the outer diameter profile of the rolling element along the entire length direction, it is impossible to accurately find the required points, resulting in large detection errors. Utility Model Content

[0004] In view of the defects of the existing technology, the utility model provides a fixed-point detection device for the logarithmic curve of the outer diameter profile of a rolling body, which solves the problem of inaccurate detection of the logarithmic curve of the outer diameter profile of a rolling body without an ideal logarithmic curve formula. The operation and detection methods are relatively simple and quick.

[0005] In order to achieve the above-mentioned purpose, on the one hand, the technical solution provided by the utility model is a fixed-point detection device for the logarithmic curve of the outer diameter profile of a rolling body, which includes a base plate, a column, a reference baffle and a V-shaped block; the column is fixed to the base plate; the reference baffle is rotatably connected to the column so that the reference baffle has a detection posture; the V-shaped block is fixed to the reference baffle, and the V-shaped block is provided with a V-shaped groove; when the reference baffle is in the detection posture, the reference baffle abuts against one side end face of the rolling body to be detected, and the V-shaped groove abuts against the outer diameter surface of the rolling body to be detected to support the rolling body to be detected, so that the axis of the rolling body to be detected and the axis of the measuring needle form an acute angle.

[0006] Furthermore, the column is vertically fixed to the base plate, and the end of the column away from the base plate is rotatably connected to the connecting portion fixed to the bottom of the reference baffle through a tilt adjustment knob.

[0007] Furthermore, the base plate is detachably fixed to the Y-axis stage of the roughness profiler via positioning pins.

[0008] Furthermore, two positioning pins are provided.

[0009] Furthermore, two positioning pins are arranged at diagonal positions of the base plate.

[0010] On the other hand, a detection method using the above-mentioned rolling element outer diameter profile logarithmic curve fixed point detection device comprises the following steps:

[0011] S100, placing the rolling element sample to be tested so that one end surface of the rolling element sample to be tested is in contact with the reference baffle and the outer diameter surface is in contact with the V-shaped groove;

[0012] S200, adjusting the reference baffle so that the axis of the rolling element sample to be tested coincides with the axis of the measuring needle;

[0013] S300, rotating the reference baffle so that the axis of the rolling element sample to be tested forms an acute angle with the axis of the measuring needle;

[0014] S400, moving the stylus to the end surface of the reference baffle away from the base plate;

[0015] S500, moving the stylus from the end surface toward the end surface of the rolling element sample to be tested away from the reference baffle until it reaches the center point of the end surface of the rolling element sample to be tested away from the reference baffle, thereby obtaining an outer contour of the rolling element sample to be tested;

[0016] S600, processing the outer contour graphic of the rolling element sample to be tested, determining required points and a measurement data table on the outer contour graphic of the rolling element sample to be tested according to the test requirements, and making an analysis template;

[0017] S700, repeating the measurement method in steps S100-S500 to measure and obtain the outer contour of the rolling body to be tested;

[0018] S800: According to the outer contour of the rolling body to be tested, the specifications of the rolling body to be tested, and the current testing requirements, the corresponding analysis template is retrieved and substituted to obtain the fixed-point values ​​of the logarithmic curve of the outer diameter profile of the rolling body to be tested.

[0019] Furthermore, in step S600, the outer contour of the rolling element sample to be tested is processed, and according to the test requirements, required points and a measurement data table are determined on the outer contour of the rolling element sample to be tested, and an analysis template is prepared, including:

[0020] S610, taking the center point last measured in S500 as the coordinate origin O;

[0021] S620, find another point A at a distance H from the coordinate origin O in the Z direction on the contour line of the end face of the rolling element sample to be tested away from the reference baffle, connect OA, and vertically align the outer contour figure with line segment OA as the reference;

[0022] S630: Set the intersection point between the end face of the reference baffle and the reference surface of the reference baffle attached to the end face of the rolling element sample to be tested as O1, find another point B at a distance H1 from O1 in the Z direction on the contour line of the reference surface of the reference baffle attached to the end face of the rolling element sample to be tested, and connect points A and B;

[0023] S640. Find the midpoint C of line segment AB and draw line segment CD so that line segment CD is parallel to line segment OA. Line segment CD intersects the outer diameter contour line of the rolling element at point E.

[0024] S650: With point E as the midpoint on the outer diameter contour line of the rolling element, symmetrically select points on both sides according to the detection requirements and determine them as required points. Measure the distance of each required point from point E in the Z direction.

[0025] S660: Output the measurement results of each required point in step S650 in a table format, and store the specifications, required points and measurement data table of the rolling element sample to be tested as an analysis template.

[0026] Furthermore, the step S100 of placing the rolling element sample to be tested so that one end surface of the rolling element sample to be tested is in contact with the reference baffle and the outer diameter surface is in contact with the V-shaped groove includes:

[0027] S110, installing the rolling element outer diameter profile logarithmic curve fixed-point detection device on the Y-axis platform of the roughness profiler;

[0028] S120, placing the rolling element sample to be tested in the V-shaped groove, so that one end surface of the rolling element sample to be tested is in contact with the reference baffle, and the outer diameter surface is in contact with the V-shaped groove.

[0029] Furthermore, the fixed-point values ​​of the logarithmic curve of the outer diameter profile of the rolling element include required points determined on the outer profile graph.

[0030] The beneficial effects of the utility model are as follows: the tooling structure is simple, the adjustment is convenient, and the operation is simple. It effectively solves the problem that when the logarithmic curve profile of the outer diameter of the rolling body is detected without giving an ideal logarithmic curve formula, the outer diameter profile of the rolling body in the entire length direction cannot be detected conventionally, and the required point cannot be accurately found, resulting in large detection errors. It ensures the quality of the product and can effectively guide production. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a device for detecting fixed points on a logarithmic curve of the outer diameter profile of a rolling element in one embodiment of the present invention;

[0032] Figure 2 This is a structural schematic diagram of a rolling element outer diameter profile logarithmic curve fixed-point detection device installed on a Y-axis platform in one embodiment of the present utility model;

[0033] Figure 3 This is a schematic diagram of a device for detecting a fixed point on a logarithmic curve of the outer diameter profile of a rolling element in use in one embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of a measuring state of a device for detecting a fixed point of a logarithmic curve of the outer diameter profile of a rolling element in one embodiment of the present utility model;

[0035] Figure 5 This is a schematic diagram of a measuring state of a device for detecting a fixed point of a logarithmic curve of the outer diameter profile of a rolling element according to another embodiment of the present invention;

[0036] Figure 6 The outer contour figure obtained in step S600 in one embodiment of the present invention;

[0037] Figure 7 Schematic diagram of the coordinate origin O confirmed in step S610 in one embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the outer contour graphic after vertical alignment in step S620 in one embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the process of connecting points AB in step S630 in one embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of determining the intersection point E in step S640 in one embodiment of the present invention;

[0041] Figure 11 Schematic diagram of measuring the distance of each point from point E in the Z direction in step S650 in one embodiment of the present invention;

[0042] Figure 12 This is a schematic diagram of outputting the measurement results of step S660 in a table format in one embodiment of the present invention;

[0043] In the picture:

[0044] 100, bottom plate,

[0045] 200, column, 210, tilt adjustment knob, 220, positioning pin,

[0046] 300, reference baffle, 310, connecting portion, 320, third end surface, 330, reference surface,

[0047] 400, V-block, 410, V-groove,

[0048] 10. Rolling element to be tested, 11. First end surface, 12. Second end surface, 13. Outer diameter surface,

[0049] 20. Stylus,

[0050] 30. Y-axis stage. DETAILED DESCRIPTION

[0051] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] See also Figure 1-Figure 5 In one embodiment of the present invention, a device for detecting a fixed point of a logarithmic curve of the outer diameter profile of a rolling element is provided, which includes a base plate 100, a column 200, a reference baffle 300 and a V-shaped block 400; the column 200 is fixed to the base plate 100; the reference baffle 300 is rotatably connected to the column 200 so that the reference baffle 300 has a detection posture; the V-shaped block 400 is fixed to the quasi-baffle 300, and the V-shaped block 400 is provided with a V-shaped groove 410; in this embodiment, when the reference baffle 300 is in the detection posture, the base plate 100, the column 200 and the reference baffle 300 form a right triangle structure, as shown in FIG. Figure 3 and Figure 4 As shown, the reference baffle 300 abuts against the first end face 11 of one side of the rolling body 10 to be detected, and the V-shaped groove 410 abuts against the outer diameter surface 13 of the rolling body 10 to be detected to support the rolling body 10 to be detected so that the axis of the rolling body 10 to be detected forms an acute angle with the axis of the measuring needle 20.

[0053] The above-mentioned fixed-point detection device for the logarithmic curve of the outer diameter profile of a rolling element is provided with a rotatable reference baffle 300 and a V-block 400 is fixed on the reference baffle 300. The V-block 400 carries the rolling element 10 to be detected. By adjusting the angle between the reference baffle 300 and the base plate 100, the angle between the axis of the rolling element 10 to be detected and the axis of the measuring needle 20 is adjusted, so that the rolling element 10 to be detected is tilted, and the measuring needle 20 can continuously pass through the third end face 320 of the reference baffle 300, the reference surface 330, the edge position of the reference surface 330 and the first end face 11 of the rolling element 10 to be detected, the outer diameter surface 13 and the second end face 12. The rolling element is tilted during measurement so that the stylus 20 can pass through and locate the boundary between the third end face 320 and the reference surface 330, and can also pass through and locate the center of the second end face 12 to further determine the contour lines on both sides. By taking points on the contour lines on both sides, the required points can be determined more accurately and quickly, and then precise fixed-point measurement can be performed.

[0054] See also Figure 1 In one embodiment, the column 200 is vertically fixed to the base plate 100. The end of the column 200 away from the base plate 100 is rotatably connected to a connection portion 310 fixed to the bottom of the reference baffle 300 via a tilt adjustment knob 210. Specifically, the tilt adjustment knob 210 is configured as an adjustment knob with a built-in locking member. When the reference baffle 300 is rotated and adjusted to the appropriate position, the reference baffle 300 is locked to prevent the rolling element from changing its posture during the detection process.

[0055] See also Figure 1 and Figure 2 Furthermore, in one embodiment, the base plate 100 is detachably fixed to the Y-axis stage 30 of the roughness profiler via positioning pins 220. Two positioning pins 220 are provided. The two positioning pins 220 are provided at diagonal positions of the base plate 100.

[0056] On the other hand, a detection method using the above-mentioned rolling element outer diameter profile logarithmic curve fixed point detection device comprises the following steps:

[0057] Step S100: Figure 4 and Figure 5 , place the rolling body 10 to be tested so that the first end face 11 of the rolling body 10 to be tested is in contact with the reference baffle 300, and the outer diameter surface 13 is in contact with the V-shaped groove 410; it should be noted that the rolling body 10 to be tested in this step is a rolling body sample to be tested for making a template. During the specific operation, any one of the rolling bodies of the same specification can be selected as the rolling body sample to be tested to make an analysis template.

[0058] Step S200, adjusting the reference baffle 300 so that the axis of the rolling element sample to be tested coincides with the axis of the measuring needle 20;

[0059] Step S300 , rotating the reference baffle 300 so that the axis of the rolling element sample to be tested forms an acute angle with the axis of the stylus 20 ;

[0060] Step S400: Move the stylus 20 to the third end surface 320 of the reference baffle 300 away from the base plate 100;

[0061] Step S500: moving the stylus 20 from the third end face 320 toward the second end face 12 of the rolling element 10 to be tested, away from the reference baffle, until the stylus 20 reaches the center point of the second end face 12 of the rolling element sample to be tested, away from the reference baffle, to obtain an outer contour of the rolling element sample to be tested;

[0062] Step S600: Process the outer contour graphic of the rolling element sample to be tested. According to the test requirements, determine the required points and measurement data table on the outer contour graphic of the rolling element sample to be tested, and make an analysis template. It should be noted that the test requirements refer to the number and value specifications of the required points marked on this batch of drawings that are symmetrical about the length center; as well as the technical requirements for the contour depth of the required points.

[0063] See also Figure 6-Figure 12 Specifically, in one embodiment, in step S600, the outer contour of the rolling element sample to be tested is processed, and according to the test requirements, required points and a measurement data table are determined on the outer contour of the rolling element sample to be tested, and an analysis template is prepared, including:

[0064] Step S610, see Figure 6 and Figure 7 , taking the center point last measured in step S500 as the coordinate origin O;

[0065] Step S620, see Figure 8 , find another point A on the end face contour line of the rolling element sample to be tested that is away from the reference baffle and is at a distance H from the coordinate origin O in the Z direction, connect OA, and vertically align the outer contour figure with the line segment OA as the reference; it should be noted that the value of H is less than the length of this end face contour line; in this embodiment, Figure 8 Take the distance 2mm above the origin O.

[0066] Step S630, see Figure 9, let the intersection point between the third end face 320 of the reference baffle 300 and the reference surface 330 of the reference baffle 300 attached to the first end face 11 of the rolling element 10 to be detected be set as O1, find another point B with a distance H1 from O1 in the Z direction on the contour line of the reference surface 330 of the reference baffle 300 attached to the first end face 11 of the rolling element 10 to be detected, and connect points AB; it should be noted that the value of H1 is less than the length of this contour line; it should be noted that the value of H1 is less than the length of this contour line; in this embodiment, Figure 9 Take the distance 2mm below point O1.

[0067] Step S640, see Figure 10 , find the midpoint C of line segment AB, draw line segment CD, make line segment CD parallel to line segment OA, and intersect line segment CD with the outer diameter contour line of the rolling element at point E;

[0068] Step S650, see Figure 11 , take point E as the midpoint on the outer diameter contour line of the rolling element, and according to the detection requirements, select points symmetrically on the left and right and determine them as required points, and measure the distance of each required point from point E in the Z direction;

[0069] Step S660, see Figure 12 , the measurement results of each required point in step S650 are output in a table format, and the specifications, required points and measurement data table of the rolling element sample to be tested are stored as an analysis template.

[0070] Step S700: Repeat the measurement method in steps S100-S500 to measure and obtain the outer contour of the rolling body to be tested;

[0071] Step S800: Based on the outer contour of the rolling element to be tested, its specifications, and the current testing requirements, a corresponding analysis template is retrieved and substituted into the template to obtain fixed-point values ​​on the logarithmic curve of the outer diameter profile of the rolling element to be tested. In this embodiment, the fixed-point values ​​on the logarithmic curve of the outer diameter profile of the rolling element to be tested include specific required points on the outer contour.

[0072] In one embodiment, a method for obtaining a fixed-point value of a logarithmic curve of the outer diameter profile of a rolling body to be tested includes: finding a corresponding required point on the outer contour graph of the rolling body to be tested according to a corresponding analysis template, and measuring the contour depth of the required point of the rolling body to be tested, and comparing the depth with the requirements given on the drawing to determine whether the rolling body to be tested meets the standards.

[0073] In one embodiment, the step S100 of placing the rolling element sample to be tested so that one end surface of the rolling element sample to be tested is aligned with the reference baffle and the outer diameter surface is aligned with the V-shaped groove includes:

[0074] Step S110, installing the rolling element outer diameter profile logarithmic curve fixed-point detection device on the Y-axis stage of the roughness profiler;

[0075] Step S120 , placing the rolling element sample to be tested in the V-shaped groove, so that one end surface of the rolling element sample to be tested is in contact with the reference baffle, and the outer diameter surface is in contact with the V-shaped groove.

[0076] The above-mentioned method for detecting fixed-points on the logarithmic curve of the rolling element's outer diameter profile does not require strict regulations on the installation posture of the rolling element; any tilting is acceptable. There is no need to secure the rolling element, making placement and removal relatively easy. In conjunction with the measuring fixture, the stylus 20 can traverse and locate the intersection of the third end face 320 and the reference surface 330, as well as the center of the second end face 12, to further determine the contour lines on both sides. By selecting points on the contour lines on both sides, the required points on the outer diameter contour line of the rolling element can be determined more accurately and quickly, allowing for precise fixed-point measurement. Furthermore, the required points on the rolling element sample to be tested are first determined and output as a template. Rolling elements of the same specifications and the same testing requirements do not need to undergo repeated processing of the outer contour graph. Instead, the corresponding analysis template is retrieved to locate the corresponding required points on the outer contour graph of the rolling element to be tested, and the contour depth of the required points on the rolling element to be tested is measured to obtain the fixed-point values ​​on the logarithmic curve of the rolling element's outer diameter profile.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0079] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0080] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

Claims

1. A device for detecting the logarithmic curve of the outer diameter of a rolling element, characterized by: include base plate; A column fixed to the base plate; A reference baffle is rotatably connected to the column so that the reference baffle has a detection posture; A V-shaped block is fixed to the reference baffle, and the V-shaped block is provided with a V-shaped groove; When the reference baffle is in the detection position, the reference baffle abuts against one side end face of the rolling body to be detected, and the V-shaped groove abuts against the outer diameter surface of the rolling body to be detected to support the rolling body to be detected, so that the axis of the rolling body to be detected forms an acute angle with the axis of the measuring needle.

2. The device for detecting fixed points on a logarithmic curve of the outer diameter profile of a rolling element according to claim 1, characterized in that: The column is vertically fixed to the base plate, and the end of the column away from the base plate is rotatably connected to the connecting portion fixed to the bottom of the reference baffle through a tilt adjustment knob.

3. The device for detecting fixed points on a logarithmic curve of the outer diameter profile of a rolling element according to claim 1, characterized in that: The base plate is detachably fixed to the Y-axis stage of the roughness profiler via positioning pins.

4. The device for detecting fixed points on a logarithmic curve of the outer diameter profile of a rolling element according to claim 3, characterized in that: There are two positioning pins.

5. The device for detecting fixed points on a logarithmic curve of the outer diameter profile of a rolling element according to claim 4, characterized in that: Two positioning pins are arranged at diagonal positions of the base plate.

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