Sliding shoe coating thickness detection tool and coating thickness actual value detection method

Abstract

The invention belongs to the field of tool design, and particularly relates to a sliding shoe coating thickness detection tool and a coating thickness actual value detection method. The detection tool comprises a mandrel and a positioning seat, the positioning seat comprises a sliding shoe supporting face and a positioning hole located above the sliding shoe supporting face, the mandrel is of a columnar structure, and the edge of the lower end face of the mandrel is provided with an arc. The thickness of the plating layer is obtained by measuring the height difference of the tool before and after plating and through a series of calculations. The problem that a spherical coloring gauge cannot measure the actual value of the coating thickness is solved. The problem of inaccurate three-coordinate measurement of the thickness of the plating layer caused by non-uniform thickness of the plating layer is solved; the problem that the coating is easily scratched when the thickness of the coating is measured is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of tool design, and particularly relates to a sliding shoe plating thickness detection tool and a plating thickness actual value detection method. BACKGROUND

[0002] The inner spherical surface of the sliding shoe is in sliding friction with the plunger spherical surface during operation. In order to improve the lubrication performance, the sliding shoe inner spherical surface is subjected to copper plating treatment. In order to ensure the inner spherical surface diameter size requirement, the plating thickness has certain requirements, and the plating thickness needs to be measured. The sliding shoe structure is shown in Figure 1 . The traditional spherical surface coloring gauge can only measure the range and cannot measure the actual value. Since the plating thickness has certain unevenness, the three-coordinate measurement result error is large. SUMMARY

[0003] OBJECTIVE To provide a sliding shoe plating thickness detection tool and a plating thickness actual value detection method, which measures the pre-plating and post-plating tool height difference and obtains the plating thickness through a series of calculations.

[0004] TECHNICAL SCHEME A sliding shoe plating thickness detection tool, comprising: a mandrel and a positioning seat, wherein, The positioning seat comprises a sliding shoe support surface and a positioning hole above the sliding shoe support surface, the mandrel is a columnar structure and has a circular arc edge on the lower end surface.

[0005] Further, the perpendicularity of the positioning hole in the positioning seat to the plane on which the sliding shoe is placed is not greater than 0.005.

[0006] A sliding shoe inner spherical surface plating thickness actual value detection method, which is performed by means of the above tool, and comprises: measuring the pre-plating and post-plating tool height difference and obtaining the plating thickness through a series of calculations.

[0007] Further, the method comprises: Step 1: Place the pre-plating sliding shoe on the sliding shoe support surface of the positioning seat, insert the mandrel into the positioning hole of the positioning seat and top it on the sliding shoe inner spherical surface hole wall, and measure the height H1 of the upper end surface of the mandrel. Step 2: Place the post-plating sliding shoe on the sliding shoe support surface of the positioning seat, insert the mandrel into the positioning hole of the positioning seat and top it on the sliding shoe inner spherical surface hole wall, and measure the height H2 of the upper end surface of the mandrel. Step 3: Determine the plating thickness actual value T according to the mandrel diameter B, the mandrel tip edge circular arc height and the height .

[0008] Further, in Step 3,​​ Step 31: Establish the circular arc expression of the inner surface of the pre-plating shoe and the circular arc expression of the inner surface of the post-plating shoe with the center of the inner circular arc of the pre-plating part as the coordinate origin; Step 32: According to the geometric relationship between the origin, the circular arc center, and the circular arc center, calculate the actual value T of the plating thickness.

[0009] Further, the center of the inner circular arc of the pre-plating part is the coordinate origin, the radius of the inner circular arc of the pre-plating part is R, and there is .

[0010] Further, the radius of the inner circular arc of the copper-plated part is , and there is .

[0011] Further, step 32 is specifically: For the pre-plating part, according to the similarity principle of triangle, we get ; For the post-plating part, according to the similarity principle of triangle, we get ; According to the above two relationship expressions, we get: T= -R, wherein + , wherein the value of the distance between the center of the tip edge circular arc of the mandrel and the vertical coordinate of the coordinate origin when the mandrel is inserted into the bottom of the inner circular arc hole of the pre-plating part is , and the radius of the inner circular arc of the copper-plated part is .

[0012] Further, the thickness of the plating layer at different positions is measured by replacing the diameter of the mandrel.

[0013] Beneficial effects: The problem that the spherical color rule cannot measure the actual value of the plating layer thickness is solved; the problem that the uneven plating layer thickness leads to inaccurate three-coordinate measurement of the plating layer thickness is solved; and the problem that the measurement of the plating layer thickness is easy to scratch the plating layer is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. The drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0015] Figure 1 is a schematic view of the structure of the shoe part; Figure 2 is a shoe inner spherical plating layer thickness measurement tool; In the figure: 1 is the mandrel, 2 is the positioning seat; Figure 3 is: measurement method basic diagram; Figure 4 is: measurement method calculation principle diagram. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0017] The features and illustrative embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some of these specific details. The description of the embodiments below is merely intended to provide a better understanding of the present application by showing examples of the present application. The present application is in no way limited to any specific settings and methods presented below, but covers any improvements, replacements and modifications of structures, methods and devices without departing from the spirit of the present application. In the drawings and the following description, well-known structures and technologies are not shown to avoid unnecessary obscuring of the present application.

[0018] In the description of the present application, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are described based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, the ordinal numbers (for example, "first and second", etc.) are used to distinguish objects, and are not limited to the order, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, "mounting", "connection" and "connection" should be understood in a broad sense, which can be direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other, and each embodiment can be mutually referred to and quoted. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0022] This invention belongs to the field of tooling design and relates to a method for detecting the actual value of the coating thickness on the inner spherical surface of a slipper. The method involves measuring the height difference of the slipper coating thickness detection tool and calculating the actual coating thickness.

[0023] This application proposes a method for testing and calculating coating thickness by converting the measurement of mandrel height into measurement. A testing method is proposed that utilizes the contact measurement between a circular arc and the coating to prevent scratching the coating. A measurement method is proposed that can measure different positions of the coating by changing the mandrel diameter.

[0024] This application designs a type with an arc as... The mandrel 1 is vertically inserted into the inner spherical surface of the slide shoe by the positioning seat 2. The perpendicularity between the positioning hole in the positioning seat 2 and the plane on which the slide shoe is placed is no greater than 0.005 (structure as follows). Figure 2 (as shown), arc The risk of scratching parts during measurement has been eliminated. The actual coating thickness can be obtained by calculating the height difference between the upper end face of the mandrel before and after plating.

[0025] A method for detecting the actual thickness of the inner spherical coating of a skate shoe includes the following steps: Arrange the parts before plating according to Figure 2 Placed on the plane of positioning seat 2, the mandrel 1 is inserted through the positioning hole of positioning seat 2 and presses against the inner spherical wall of the slip shoe, measuring the height of the upper end face of the mandrel. ; The plated parts are arranged according to Figure 2 Placed on the plane of positioning seat 2, the mandrel 1 is inserted through the positioning hole of positioning seat 2 and presses against the inner spherical wall of the slip shoe, measuring the height of the upper end face of the mandrel. ; From steps (1) and (2), the measured height difference ΔH and the coating thickness T can be obtained. Figure 3 As shown, with the center of the inner arc of the part before plating as the origin of the coordinate system, and assuming the radius of the inner arc of the part before plating is R, the function is: The inner radius of the copper-plated part is The function is The mandrel diameter is B, and the mandrel tip radius is [missing information]. When the mandrel is inserted into the bottom of the inner arc hole of the part before plating, the value of the distance from the center of the arc of the mandrel tip to the ordinate of the coordinate origin is [value missing]. .like Figure 4 As shown, the triangle formed by the origin, the intersection of the mandrel arc and the inner arc before plating, and the ordinate of the intersection point, is parallel to the origin, the center of the mandrel arc, and the Y-axis. The distance formed triangle is similar triangle, thus can obtain: , similarly can obtain: .

[0026] Thus can obtain: +

[0027] T= -R Finally can be calculated by formula of coating thickness, wherein R, , B are known conditions, and the coating thickness in the corresponding area ring range can be measured by replacing the mandrel with different diameters B.

[0028] Embodiment: The pre-plating part is placed on the plane of the positioning seat 2, the mandrel 1 is inserted into the positioning hole of the positioning seat 2 and is abutted on the inner spherical hole wall of the slide shoe, and the height of the upper end face of the mandrel is measured Figure 2 . The post-plating part is placed on the plane of the positioning seat 2, the mandrel 1 is inserted into the positioning hole of the positioning seat 2 and is abutted on the inner spherical hole wall of the slide shoe, and the height of the upper end face of the mandrel is measured . Figure 2 The height difference AH is obtained from steps (1) and (2), and the coating thickness T is calculated according to the known conditions R, , B and the following formula. +

[0029] ; T= -R. As described above, the present application relates to a detection method of the actual value of the inner circular arc coating thickness of a slide shoe. The detection method of the actual value of the inner circular arc coating thickness of a slide shoe is realized by measuring and calculating the height difference generated by the abutment of the mandrel 1 on the inner circular arc hole wall of the slide shoe before and after plating. The present application proposes a complete testing method and calculation process, and the coating thickness is measured by replacing the mandrel diameter, so that the measurement accuracy is ensured, and the coating itself is also avoided from being scratched.

[0030] As described above, the present application relates to a detection method of the actual value of the inner circular arc coating thickness of a slide shoe. The detection method of the actual value of the inner circular arc coating thickness of a slide shoe is realized by measuring and calculating the height difference generated by the abutment of the mandrel 1 on the inner circular arc hole wall of the slide shoe before and after plating. The present application proposes a complete testing method and calculation process, and the coating thickness is measured by replacing the mandrel diameter, so that the measurement accuracy is ensured, and the coating itself is also avoided from being scratched.

[0031] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.​

Claims

1. A slide shoe coating thickness detection tool, characterized in that, Comprise: A mandrel and a positioning seat, wherein, The positioning seat comprises a slide shoe supporting surface and a positioning hole above the slide shoe supporting surface, and the mandrel is a columnar structure and has a circular arc edge on the lower end surface .

2. The tooling of claim 1, wherein, The perpendicularity of the positioning hole in the positioning seat to the plane where the sliding shoe is placed is not greater than 0.

005.

3. A method for detecting the actual value of the inner spherical surface plating thickness of a sliding shoe, characterized in that, The method is carried out by means of the tooling of claim 1 or 2, and the method comprises: The plating thickness is obtained by measuring the height difference of the tooling before and after plating and through a series of calculations.

4. The method of claim 3, wherein, Comprise: Step 1: Place the pre-plating shoe on the shoe support surface of the positioning seat, and insert the mandrel into the positioning seat positioning hole and top on the inner spherical surface hole wall of the shoe. ; Step 2: Place the post-plating sliding shoe on the sliding shoe support surface of the positioning seat, insert the mandrel into the positioning hole of the positioning seat and top on the inner spherical surface hole wall of the sliding shoe, and measure the height H2 of the upper end surface of the mandrel; Step 3: Determine the actual value of the plating thickness T according to the core shaft diameter B, the core shaft tip edge circular arc , the height , and the height .

5. The method of claim 4, wherein, In step 3, Step 31: Take the center of the inner circular arc of the pre-plating part as the coordinate origin, establish the circular arc expression of the inner surface of the pre-plating sliding shoe and the circular arc expression of the inner surface of the post-plating sliding shoe; Step 32: Calculate the actual value of the plating thickness T according to the origin, the arc center, and the arc geometric relationship between the centers.

6. The method of claim 5, wherein, The center of the inner arc of the part before plating is the coordinate origin, and the inner arc radius of the part before plating is R, and there is: .

7. The method of claim 6, wherein, The inner arc radius of the copper-plated part is , and there is .

8. The method of claim 5, wherein, Step 32, specifically: For the parts before plating, according to the principle of triangle similarity, we have: ; For the plated parts, according to the principle of triangle similarity, we have: According to the above two relations, we have T = R - (R - r) = R - R + r = r -R, where + where the value of the center of the arc of the tip edge of the mandrel when inserted into the arc hole of the pre-plated part is , and the radius of the arc of the plated copper part is .

9. The method of claim 3, wherein, Measure the thickness of the plating layer at different positions by replacing the diameter of the mandrel.

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