Train wheel machining sample plate verification device based on point taking method and use method

Abstract

The invention discloses a train wheel machining sample plate verification device based on a point taking method, the train wheel machining sample plate verification device based on the point taking method comprises a flat plate, the bottom of the flat plate is provided with a supporting edge, the top of the flat plate is provided with a point taking structure, by adopting the train wheel machining sample plate verification device based on the point taking method, field personnel can conveniently and rapidly obtain the contour of a sample plate for verification, and the working efficiency is improved. The invention further discloses a using method of the train wheel machining sample plate verification device based on the point taking method.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of train wheels, and particularly relates to a train wheel machining template checking device based on a point taking method. BACKGROUND

[0002] Currently, the templates used for wheel machining are mainly web templates and tread templates, which are made of T8 material plates with a thickness of 3 mm. The template profile is placed on the corresponding surface of the wheel to observe the fitting condition and gap size to determine whether the wheel machining profile is qualified.

[0003] However, when the template profile deviates from the wheel profile, it may be either that the wheel machining profile is incorrect or that the template is incorrect, and in this case, the template needs to be checked to confirm whether the template is correct.

[0004] The current template checking method is based on the point taking method of the iron standard, which requires that the template be sent to a qualified testing center for checking. The optical microscope or machine optical recognition is used to take a point at a certain distance on the template profile, and then the coordinate values of each point are compared with the coordinate values of the theoretical profile at the position to determine whether the template profile meets the requirements. However, the above method takes a long time to send for inspection, and the on-site operator cannot quickly obtain the template profile data, which will seriously affect the normal work efficiency.

[0005] The utility model patent with the publication number CN215064266U discloses a name as an outer wheel rim contour inspection template on December 7, 2021. The inspection template includes four detection parts, and the sizes of the four detection parts are respectively matched with the upper limit size and the lower limit size of the outer wheel rim profile before machining and the upper limit size and the lower limit size of the outer wheel rim profile after machining. The outer wheel rim contour inspection template cannot solve the technical problems described above. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art and provide a train wheel machining template checking device based on the point taking method, which can quickly obtain the template profile for checking by on-site personnel and improve work efficiency.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows: The train wheel machining template checking device based on the point taking method includes a flat plate, a support edge is arranged at the bottom of the flat plate, and a point taking structure is arranged at the top of the flat plate.

[0008] The point taking structure includes a metal rod, a scale is arranged on the metal rod, a mounting edge is arranged above the support edge, a plug hole is arranged on the mounting edge, and the metal rod penetrates through the plug hole.

[0009] The jack is provided with a plurality of and equidistantly arranged, each of which is inserted with a metal rod, and the installation edge surface is provided with a digital mark corresponding to the jack.

[0010] The flat plate is provided with a stop edge on one side, and the top end and the bottom end of the stop edge are respectively connected and perpendicular to the installation edge and the support edge.

[0011] The jack is rectangular, and the cross section of the metal rod is a rectangular structure.

[0012] The bottom end of the metal rod is provided with a sharp head part, which is a triangular structure.

[0013] The bottom edge of the installation edge surface is a horizontal straight line.

[0014] The sample plate contacts the support edge at the bottom, one end of the sample plate abuts against the stop edge, and the bottom end of the metal rod contacts the top profile of the sample plate.

[0015] The use method of the train wheel machining sample plate checking device based on the point picking method comprises the following steps: S1, the profile surface of the sample plate to be checked is placed on the support edge with the profile surface upward, and one side of the sample plate is tightly attached to the stop edge; S2, the metal rods are sequentially moved downward according to the digital mark, until the sharp head part touches the profile surface of the sample plate; S3, the scale values on each metal rod are sequentially read out and recorded to obtain the longitudinal coordinate values of the profile surface of the sample plate; S4, the measurement profile line of the sample plate is established in the CAD drawing software according to the jack spacing and the longitudinal coordinate values of the profile surface of the sample plate; S5, the measurement profile line is mirror flipped and compared with the theoretical sample plate profile line.

[0016] The technical effect of the present application is that the train wheel machining sample plate checking device based on the point picking method can quickly obtain each coordinate point of the entity sample plate profile based on the sample plate checking principle of the point picking method, so that the on-site operator can quickly obtain the sample plate profile, and then compare it with the theoretical sample plate profile, which is convenient for on-site use of the machining sample plate to simply check the sample plate and quickly judge whether the sample plate is made incorrectly, solves the problem of long inspection time in the existing optical recognition checking method, and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present specification includes the following drawings, and the contents shown are as follows: Figure 1 is a structural schematic view of the train wheel machining sample plate checking device based on the point picking method of the present application; Figure 2 is a use schematic view of the metal rod of the present application; Figure 3is a structural schematic diagram of the pointed head part of the present application; Figure 4 is a reading schematic diagram of the metal rod of the present application; Figure 5 is a distribution schematic diagram of the insertion hole of the present application; Figure 6 is a coordinate graph of the measured profile line of the template.

[0018] In the figure, the marks are: 1, flat plate; 2, supporting edge; 3, mounting edge; 4, blocking edge; 5, metal rod; 6, insertion hole; 7, pointed head part; 8, example of template to be checked. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, and the purpose is to help the technical personnel in the field to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application, and to help its implementation.

[0020] As Figure 1 shown, the train wheel machining template checking device based on the point taking method comprises a flat plate 1, the bottom of the flat plate 1 is provided with a supporting edge 2, and the top of the flat plate 1 is provided with a point taking structure. The above structure, the flat plate 1 is used for placing the template to be checked, the supporting edge 2 can make the posture of the template to be checked stable, the metal rod 5 is used as the profile surface point taking structure of the template to be checked, the scale reading is used instead of optical recognition, the profile coordinate point system of the machining template is quickly collected through a pure mechanical way, the machining precision of the template is effectively judged, and the on-site operation efficiency is significantly improved; it is fast, easy to operate, and the data is relatively accurate, which is convenient for on-site personnel to quickly obtain the profile of the template, realizes the simple checking of the machining template, and thus efficiently completes the on-site collection of the physical profile coordinate points.

[0021] As Figure 2 shown, the point taking structure comprises a metal rod 5, the metal rod 5 is provided with a scale, the supporting edge 2 is provided with a mounting edge 3 above, the mounting edge 3 is provided with an insertion hole 6, and the metal rod 5 passes through the insertion hole 6. The metal rod 5 can move along the insertion hole 6, when it contacts different positions of the profile surface of the template to be checked, different scale values can be read through the scale on the surface of the metal rod 5, so that the longitudinal coordinate points of the profile surface can be read by detecting different positions of the profile surface of the template to be checked through multiple metal rods 5; compared with the optical recognition method of the prior art, the operation is simpler, the inspection time is saved, the template manufacturing error can be detected in time, and the production rhythm of the train wheel profile checking is met.

[0022] As Figure 4As shown, the insertion hole 6 is provided with a plurality of and equidistantly arranged, and each insertion hole 6 is inserted with a metal rod 5, and the surface of the mounting edge 3 is provided with a digital mark corresponding to the insertion hole 6. A plurality of metal rods 5 can adapt to the detection of different positions of the profile surface of the sample to be checked. Since the metal rod 5 can be freely moved along the direction of the insertion hole 6, the checking of the sample of different sizes or different profile surface shapes can be adapted; the digital mark is convenient for the operator to record the corresponding reading of the metal rod 5, and is convenient for quickly generating coordinates in the drawing software.

[0023] As shown in Figure 1 , the flat plate 1 is provided with a stop edge 4 on one side, and the top end and the bottom end of the stop edge 4 are respectively connected and perpendicular to the mounting edge 3 and the supporting edge 2. The stop edge 4 and the supporting edge 2 form a right angle structure, which is adapted to the right angle shape of the end of the sample, and when the sample contacts the stop edge 4, it plays a positioning role, so that the sample does not move when it is contacted by the metal rod 5, avoiding rework operation.

[0024] As shown in Figure 4 , the insertion hole 6 is rectangular, and the cross section of the metal rod 5 is rectangular structure. The shape of the insertion hole 6 is adapted to the cross-sectional shape of the metal rod 5, which can avoid the posture skew and rotation of the metal rod 5 in the insertion hole 6, and ensure the accuracy of the scale reading of the metal rod 5, As shown in Figure 3 , the bottom end of the metal rod 5 is provided with a sharp head 7, and the sharp head 7 is a triangular structure. Since the bottom end of the metal rod 5 is the contact end with the profile surface of the sample, the bottom end is designed as a triangular sharp head, so that the bottom end of the center line of the metal rod 5 corresponds to the sharp end of the sharp head 7. The sharp head 7 not only reduces the size of the bottom end, but also enables the bottom end of the center line of the metal rod 5 to accurately contact the profile surface of the sample, ensuring the accuracy of the point position reading measured by the metal rod 5.

[0025] As shown in Figure 2 , the bottom edge of the mounting edge 3 is a horizontal straight line. The mounting edge 3 not only serves as the mounting port of the metal rod 5, but also serves as the reading reference line of the scale on the metal rod 5. The operator can perform reading operation without the aid of other reference tools, improving the operation convenience of the operator in the checking and detection process. When the actual reading is performed, the operator can read one by one along the bottom horizontal line of the mounting edge 3, effectively saving time.

[0026] As shown in Figure 2 , the sample contacts the supporting edge 2 at the bottom, one end of the sample abuts against the stop edge 4, and the bottom end of the metal rod 5 contacts the top profile of the sample. After the sample to be checked is placed on the supporting edge 2, one side of the main body thereof contacts the surface of the flat plate 1, and one end thereof abuts against the stop edge 4, so that the sample to be checked is effectively positioned and protected, and then the metal rod 5 is lowered to contact the top profile thereof, and subsequent reading operation can be performed.

[0027] The use method of the train wheel machining sample plate checking device based on the point taking method comprises the following steps: S1. Place the template with the outline to be verified facing up on the support edge 2, so that one side of the template is close to the stop edge 4. S2. Move the metal rod 5 downwards in the order of the number markings until the pointed end 7 touches the outline of the template. S3. Read and record the scale values ​​on each metal rod 5 in sequence to obtain the ordinate value of the template outline surface; S4. Based on the spacing of the 6 jacks and the ordinate value of the template outline, establish the measurement outline of the template in the CAD drawing software. S5. After mirroring and flipping the measured contour line, compare it with the theoretical template contour line.

[0028] Example: The main body of the plate 1 is a plate 500mm long, 300mm wide, and 25mm thick. There are 20 equidistant, collinear square holes 6 on the mounting edge 3. Each hole 6 is 5mm long and 1.5mm wide. The distance between any two holes 6 is 15mm, meaning the distance between the center points of adjacent holes 6 is 20mm. Each hole is marked with a number from 1 to 20. There are 20 metal rods 5, each 320mm long, 5mm wide, and 1.5mm thick, with a 3mm high triangular tip at the bottom, allowing them to pass through the holes 6 and move freely up and down along them. Each metal rod 5 has graduations from bottom to top; during use, the reading is taken from the part of the top of the metal rod 5 that is obscured by the mounting edge 3.

[0029] During inspection, place the template with the outline to be checked facing upwards, and press the lower left side against the edge of the retaining edge 4; then move the metal rod 5 downwards in sequence until the bottom tip touches the outline of the template. Figure 2 As shown; take readings and record them in sequence, referring to... Figure 5 This yields the ordinate values ​​of 17 coordinate points. The lateral distance between the center points of adjacent sockets 6 is 20 mm, therefore the x-coordinates of each coordinate point are 20 mm apart. The ordinate values ​​of these 17 points are then input into CAD drawing software, and adjacent coordinate points are connected sequentially to obtain the measurement contour line of the machining template. Figure 6 The broken line is the measurement contour. After mirroring and flipping it, the actual contour line of the template to be verified can be obtained. Then, the data is compared with the theoretical template contour line. The shape matching degree or specific coordinate value of the two contour lines is compared. Based on the comparison results, it can be determined whether the contour surface of the template to be verified conforms to the manufacturing error.

[0030] This verification device is based on the template verification principle of the point sampling method. It can quickly obtain the coordinate points of each physical template outline, enabling on-site operators to quickly obtain the template outline and compare it with the theoretical template outline. This facilitates simple verification of the template when using it on-site, and quickly determines whether there are any errors in the template production. It solves the problem of long inspection time in the existing optical recognition verification method and improves work efficiency.

[0031] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A train wheel machining template verification device based on the point sampling method, characterized in that: It includes a flat plate (1), the bottom of which is provided with a support edge (2), and the top of which is provided with a sampling structure.

2. The train wheel processing template verification device based on the point-sampling method according to claim 1, characterized in that: The sampling structure includes a metal rod (5) with a scale on it, an installation edge (3) above the support edge (2) with a socket (6) on the installation edge (3), and the metal rod (5) passes through the socket (6).

3. The train wheel processing template verification device based on the point-sampling method according to claim 2, characterized in that: The socket (6) is provided in multiple and equally spaced positions. A metal rod (5) is inserted into each socket (6). The surface of the mounting edge (3) is marked with the corresponding numbers of the socket (6).

4. The train wheel processing template verification device based on the point sampling method according to claim 3, characterized in that: The plate (1) has a stop edge (4) on one side, and the top and bottom ends of the stop edge (4) are connected to and perpendicular to the mounting edge (3) and the supporting edge (2) respectively.

5. The train wheel processing template verification device based on the point sampling method according to claim 3, characterized in that: The socket (6) is rectangular, and the metal rod (5) has a rectangular cross-section.

6. The train wheel processing template verification device based on the point-sampling method according to claim 2, characterized in that: The metal rod (5) has a pointed head (7) at its bottom end, and the pointed head (7) has a triangular structure.

7. The train wheel processing template verification device based on the point-sampling method according to claim 2, characterized in that: The bottom edge of the mounting edge (3) is a horizontal straight line.

8. The train wheel processing template verification device based on the point-sampling method according to any one of claims 4-7, characterized in that: The bottom of the template contacts the support edge (2), one end of the template abuts against the guard edge (4), and the bottom end of the metal rod (5) contacts the top contour of the template.

9. The method of using the train wheel processing template verification device based on the point-sampling method as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Place the template with the outline to be checked facing up on the support edge (2), so that one side of the template is close to the guard edge (4). S2. Move the metal rod (5) downwards in the order of the numbers marked until the tip (7) touches the outline of the template. S3. Read out the scale values ​​on each metal rod (5) in sequence and record them to obtain the ordinate value of the template outline surface; S4. Based on the spacing of the jacks (6) and the ordinate of the template outline, establish the measurement outline of the template in the CAD drawing software. S5. After mirroring and flipping the measured contour line, compare it with the theoretical template contour line.

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