A comprehensive inspection tool for crankshaft keyway size and its use method

Abstract

The present invention discloses a comprehensive inspection tool for inspecting the size of a crankshaft keyway and a method for using the tool, comprising a handle, a width stop end provided at the top of the handle, the width of the width stop end matching the width of the keyway; a depth and length measuring end provided at the bottom of the handle, a width through end provided on one side of the depth and length measuring end; a depth measuring scale bar in the horizontal direction and a length measuring scale bar in the vertical direction are provided in the middle of one side of the depth and length measuring end respectively; the present invention integrates inspection tools for the depth, length and width required for inspection of the keyway into one, and there is no need to replace different inspection tools during inspection; the inspection tool has the function of quickly inspecting the depth, length and width of the keyway, can reduce the cost of unnecessary inspection tools, save costs, is convenient for employees to use, and improves inspection efficiency and accuracy; the inspection method of the present invention is simple, avoids judgment errors caused by reading problems, improves inspection efficiency, and the comprehensive inspection tool has a wide range of uses, can be operated and used by newcomers, and is easy to carry.

Description

Technical Field

[0001] The invention belongs to the technical field of keyway inspection tools, and in particular relates to a comprehensive inspection tool for crankshaft keyway dimensions and a use method thereof. Background Art

[0002] The crankshaft is a key component in the engine that rotates at high speed. It consists primarily of the main journal, oil seal journal, gear journal, pulley shaft, and crank arm. It is a crucial part in the engine, bearing impact loads and transmitting power. The crankshaft crankshaft keyway, as the core component of the crankshaft's power transmission, has a direct impact on its ability to withstand impact loads and transmit power.

[0003] The machined keyway dimensions are inspected to determine whether they meet the technical requirements of the customer's drawings. Traditional inspection methods used vernier calipers for depth and vernier calipers or single plug gauges for width and length. While measurement accuracy ensures inspection accuracy, using different gauges for different dimensions increases the number of inspection steps and increases reading errors, impacting measurement accuracy. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology and reduce the use of different inspection tools, the present invention provides a comprehensive inspection tool that can integrate the depth, length and width of the keyway to be inspected. This inspection tool reduces the cost of unnecessary inspection tools, saves costs, is convenient for employees to use, and improves inspection efficiency and accuracy.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] A comprehensive inspection tool for detecting the size of a crankshaft keyway comprises a handle; a width stop end is provided at the top of the handle, the width of the width stop end matching the keyway width; a depth and length measuring end is provided at the bottom of the handle, and a width through end is provided on one side of the depth and length measuring end; a horizontal depth measuring scale and a vertical length measuring scale are provided in the middle of one side of the depth and length measuring end; an edge line of the length measuring scale away from the width through end is set as a length through end line, and an edge line close to the width through end is set as a length stop end line; an edge line of the depth measuring scale away from the handle is set as a depth through end line, and an edge line close to the handle is set as a depth stop end line.

[0007] As a further technical improvement, the width of the width stop is smaller than the maximum keyway width. The specific design dimensions need to be set according to the keyway width requirements and width tolerance level on the drawing; the width stop is used to determine whether the keyway width does not exceed the upper limit required by the drawing.

[0008] As a further technical improvement, the width of the width-through end is greater than the minimum value of the keyway width. The specific design dimensions need to be set according to the keyway dimensions and width tolerance grade on the drawing; the width-through end is used to determine whether the keyway width is less than the lower limit required by the drawing.

[0009] As a further technical improvement, the width of the depth length measuring end is smaller than the width through end. The width of the depth length measuring end can be set to be much smaller than the width through end to reduce contact with the width edge during measurement, increase service life, and reduce difficulty in use.

[0010] As a further technical improvement, the handle is T-shaped.

[0011] As a further technical improvement, the handle is equipped with anti-slip grooves. The width of the handle is slightly smaller than that of the depth and length measuring end. This reduces the weight of the gauge and makes it easier for employees to hold. After subsequent processing, the handle is further equipped with anti-slip grooves to increase the roughness, preventing employees from slipping during use and facilitating their use.

[0012] The method for using the comprehensive inspection tool for inspecting the crankshaft keyway size of the present invention comprises the following steps:

[0013] S1: First use the width stop to determine whether the keyway width is within the upper limit: When using, first align one corner of the width stop with the keyway and gently squeeze it, slowly applying force. When the width stop cannot be inserted into the keyway, it can be determined that the keyway width is less than the lower difference;

[0014] S2: Use the width through end to determine whether the keyway width exceeds the lower limit: When using, first gently squeeze a corner of the width through end into the keyway, and then push it along the edge. When the through end is completely inserted into the keyway, it can be determined that the keyway width is greater than the lower difference;

[0015] S3: After determining that the width is qualified, determine the depth and length of the keyway: Since the width of the depth and length measuring end is much smaller than the lower limit of the keyway size, it is easy to enter the keyway, making the inspection operation convenient; first place the depth and length measuring end into the keyway, then move the plug gauge close to one side of the keyway so that the depth scale line is close to the edge of the keyway. The depth end line and the depth through line are used to jointly determine whether the depth is qualified. That is, when the keyway edge line is higher than the through line and lower than the stop line, the keyway depth is within the upper and lower limits and meets the requirements of the drawing. There are depth lines on both sides of the depth and length measuring end, and both sides need to be tested. Similarly, when measuring the length, push the depth and length measuring end inward as much as possible, and then use the length through line and the length end line to jointly determine the length. When it is between the length through line and the length end line, the keyway length is within the upper and lower limits and meets the requirements of the drawing.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] 1. The present invention integrates the depth, length and width inspection tools required for keyway testing into one unit. There is no need to replace different inspection tools during testing. It has the function of quickly detecting the depth, length and width of keyway. At the same time, it can reduce the cost of unnecessary inspection tools, save costs, facilitate employees' use, and improve detection efficiency and accuracy.

[0018] 2. The present invention uses the width stop end, width through end, and depth length measuring end to detect the keyway respectively. The detection method is simple, avoiding the traditional method that relies on skilled techniques to correctly detect. The comprehensive inspection tool has a wide range of uses and can be operated by novices. It is also easy to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0020] Figure 2 It is a side structural schematic diagram of the present invention.

[0021] Figure 3 It is a structural diagram of the AA section.

[0022] Figure ID:

[0023] 1-handle, 2-width stop end, 3-width through end, 4-depth length measuring end, 41-length through end line, 42-length stop end line, 43-depth through end line, 44-depth stop end line. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Example:

[0026] A comprehensive inspection tool for detecting the size of a crankshaft keyway comprises a handle 1; a width stop end 2 is provided at the top of the handle 1, the width of the width stop end 2 matching the keyway width; a depth and length measuring end 4 is provided at the bottom of the handle 1, and a width through end 3 is provided on one side of the depth and length measuring end 4; a horizontal depth measuring scale and a vertical length measuring scale are provided in the middle of one side of the depth and length measuring end 4; the edge line of the length measuring scale away from the width through end 3 is set as a length through end line 41, and the edge line close to the width through end 3 is set as a length stop end line 42; the edge line of the depth measuring scale away from the handle 1 is set as a depth through end line 43, and the edge line close to the handle 1 is set as a depth stop end line 44.

[0027] The width of the width stop 2 is smaller than the maximum value of the keyway width. The specific design size needs to be set according to the width requirement and width tolerance grade of the keyway in the drawing. The width stop 2 is used to determine whether the keyway width exceeds the upper limit required by the drawing.

[0028] The width of the width through end 3 is larger than the minimum value of the keyway width. The specific design size needs to be set according to the keyway size and width tolerance grade in the drawing; the width through end 3 is used to determine whether the keyway width is not lower than the lower limit required by the drawing.

[0029] The width of the depth-length measuring end 4 is smaller than the width-through end 3. The width of the depth-length measuring end 4 can be set to be much smaller than the width-through end to reduce contact with the width edge during measurement, increase service life, and reduce difficulty in use. The handle 1 is T-shaped.

[0030] The handle 1 is provided with anti-slip grooves. The width of the handle 1 is slightly smaller than the width of the depth length measuring end 4. Firstly, this can reduce the weight of the gauge and secondly, it can make it easier for employees to hold. After subsequent processing is completed, the handle 1 is further provided with anti-slip grooves to increase the roughness, preventing employees from slipping during use and facilitating their use.

[0031] The method for using the comprehensive inspection tool for inspecting the crankshaft keyway size described in this embodiment includes the following steps:

[0032] S1: First use the width stop 2 to determine whether the keyway width is within the upper limit: When using, first align one corner of the width stop 2 with the keyway and gently squeeze it, slowly applying force. When the width stop 2 cannot be inserted into the keyway, it can be determined that the keyway width is less than the lower difference;

[0033] S2: Use the width through end 3 to determine whether the keyway width exceeds the lower limit: When using, first gently squeeze a corner of the width through end 3 into the keyway, and then push it along the edge. When the through end is completely inserted into the keyway, it can be determined that the keyway width is greater than the lower difference;

[0034] S3: After determining that the width is qualified, the depth and length of the keyway are determined: Since the width of the depth and length measuring end is much smaller than the lower limit of the keyway size, it is easy to enter the keyway, which facilitates the inspection operation; first, place the depth and length measuring end 4 into the keyway, then move the plug gauge close to one side of the keyway so that the depth mark is close to the edge of the keyway. The depth end line 44 and the depth through line 43 are used to jointly determine whether the depth is qualified. That is, when the keyway edge is higher than the through line and lower than the stop line, the keyway depth is within the upper and lower limits and meets the requirements of the drawing. There are depth lines on both sides of the depth and length measuring end, and both sides need to be tested. Similarly, when measuring the length, push the depth and length measuring end 4 inward as much as possible, and then use the length through line 41 and the length end line 42 to jointly determine the length. When it is between the length through line 41 and the length end line 42, the keyway length is within the upper and lower limits and meets the requirements of the drawing.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A method for using a comprehensive inspection tool for detecting the size of a crankshaft keyway, comprising: The method of use comprises the following steps: S1: First use the width stop (2) to determine whether the keyway width is within the upper limit: when using, first align one corner of the width stop (2) with the keyway and slightly squeeze it, slowly apply force, when the width stop (2) cannot be inserted into the keyway, it can be determined that the keyway width is less than the lower difference; S2: Use the width through end (3) to determine whether the keyway width exceeds the lower limit: when using, first gently squeeze a corner of the width through end (3) into the keyway, and then plug it along the edge. When the through end is completely inserted into the keyway, it can be determined that the keyway width is greater than the lower difference; S3: After judging whether the width is qualified, the depth and length of the keyway are judged: Since the width of the depth and length measuring end is much smaller than the lower limit of the keyway size, it is easy to enter the keyway, which is convenient for detection operation; first put the depth and length measuring end (4) into the keyway, and then move the plug gauge close to one side of the keyway so that the depth scale line is close to the edge of the keyway, and jointly judge whether the depth is qualified by the depth end line (44) and the depth through end line (43). That is, when the keyway edge line is higher than the through end scale line and lower than the stop end scale line, the keyway depth is within the upper and lower limits and meets the requirements of the drawing. There are depth lines on both sides of the depth and length measuring end, and both sides need depth detection; similarly, when measuring the length, try to push the depth and length measuring end (4) inward, and then jointly judge the length by the length through end line (41) and the length stop end line (42). When it is between the length through end line (41) and the length stop end line (42), the keyway length is within the upper and lower limits and meets the requirements of the drawing.

2. A comprehensive inspection tool for detecting crankshaft keyway dimensions, which is applied to the method for using the comprehensive inspection tool for detecting crankshaft keyway dimensions according to claim 1, characterized in that: The comprehensive inspection tool for inspecting the crankshaft keyway size comprises a handle (1); a width stop end (2) is provided at the top of the handle (1), and the width of the width stop end (2) matches the width of the keyway; a depth length measuring end (4) is provided at the bottom of the handle (1), and a width through end (3) is provided on one side of the depth length measuring end (4); a depth measuring strip in the horizontal direction and a length measuring strip in the vertical direction are respectively provided in the middle of one side of the depth length measuring end (4); The edge line of the length measuring mark away from the width through end (3) is set as the length through end line (41), and the edge line close to the width through end (3) is set as the length end line (42); The edge line of the depth measuring mark away from the handle (1) is set as the depth through end line (43), and the edge line close to the handle (1) is set as the depth stop end line (44); The handle (1) is T-shaped; the handle (1) is provided with anti-slip markings.

3. The comprehensive inspection tool for inspecting crankshaft keyway dimensions according to claim 2, characterized in that: The width of the width stop (2) is smaller than the maximum value of the keyway width.

4. The comprehensive inspection tool for inspecting crankshaft keyway dimensions according to claim 2, characterized in that: The width of the width through end (3) is greater than the minimum value of the keyway width.

5. The comprehensive inspection tool for inspecting crankshaft keyway dimensions according to claim 2, characterized in that: The width of the depth length measuring end (4) is smaller than the width of the width through end (3).

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