Annular part dimension measuring device

Abstract

The utility model provides an annular part dimension measuring device which comprises a measuring platform, three vertical columns are fixed on the upper surface of the measuring platform, the projections of the center lines of the three columns to the surface of the measuring platform are arranged in an isosceles triangle shape, and four measuring meters are installed on the three columns in total. Wherein the measuring rods of three measuring meters are in contact with the circumferential outer wall of the annular part, and the measuring rod of the other measuring meter is in contact with the upper end surface of the annular part; ejector rods used for positioning parts are installed on two of the stand columns. The measuring device is reasonable in design structure, the diameter size, the height size and the taper size of a part can be measured by using the measuring device, the frequency of frequently measuring the part can be reduced, and the placing position of the part can be ensured to be unchanged during measurement through the matching of the fixed rod and the rear ejector rod, so that the measurement accuracy is improved. The measurement precision is not influenced by the experience and skills of personnel, and the method has the advantages of convenient operation and high measurement precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of part size detection, and in particular relates to a ring-shaped part size measuring device. Background Art

[0002] Traditional instruments for measuring outer diameter, height and taper dimensions include vernier calipers, outside micrometers, D051+micrometers, G904+micrometers, etc. The advantages and disadvantages of these instruments are shown in the table below:

[0003]

[0004] As can be seen from the above table, vernier calipers are suitable for measuring parts with low precision requirements; outside micrometers require personnel with higher skill levels to achieve their accuracy; D051+ micrometer can only measure a single dimension, and multiple instruments are required when there are many measurement items; G904+ micrometer can only measure height dimensions.

[0005] However, in the existing bearing manufacturing field, especially in the production process of zero annular parts such as rolling elements and rings, it is usually necessary to measure different sizes, including diameter size, height size and taper size. However, the existing measuring devices and measuring methods have the problems of poor versatility, single function, poor measurement accuracy and low measurement efficiency when performing size measurement. Therefore, there is an urgent need for a device that can be used for measuring the diameter, height and taper size of annular parts to solve the above problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a ring-shaped part size measuring device, which has a reasonable design structure and can be used to measure the diameter size, height size and taper size of the part, thereby reducing the frequency of frequent measurement of the part. Through the cooperation of the fixing rod and the rear push rod, it can be ensured that the placement position of the part remains unchanged during measurement, and the measurement accuracy will not be affected by the experience and skills of the personnel. The utility model has the advantages of convenient operation and high measurement accuracy.

[0007] The technical solution adopted by the utility model is: a ring-shaped part size measuring device, comprising a measuring platform, three vertically arranged columns are fixed on the upper surface of the measuring platform, the projections of the center lines of the three columns to the surface of the measuring platform are arranged in an isosceles triangle, and a total of four measuring gauges are installed on the three columns, wherein the measuring rods of three measuring gauges are in contact with the circumferential outer wall of the ring-shaped part, and the measuring rod of another measuring gauge is in contact with the upper end face of the ring-shaped part; and push rods for positioning the part are installed on two of the columns, and the front ends of the push rods can abut against the circumferential outer wall of the part.

[0008] The three columns are respectively a first column, a second column and a third column installed above the measuring platform, and the vertical distance between the first column and the second column is equal to the vertical distance between the first column and the third column;

[0009] The four measuring meters are respectively a first measuring meter installed on the first column, a second measuring meter installed on the second column, and a third measuring meter and a fourth measuring meter installed on the third column;

[0010] The measuring rod of the first measuring gauge contacts the upper surface of the part, and the measuring rods of the second measuring gauge, the third measuring gauge and the fourth measuring gauge abut against the circumferential outer wall of the part respectively.

[0011] The measuring meter is mounted on the column via a clamping rod.

[0012] The push rod comprises a rear push rod installed on the first column and a fixing rod installed on the third column.

[0013] The measuring gauge is a dial gauge, a micrometer or a multimeter.

[0014] The beneficial effects of the utility model are:

[0015] The utility model has a reasonable design structure and can use the measuring device to measure the diameter, height and taper size of a part, which can reduce the frequency of frequent measurement of parts. Through the cooperation of the fixing rod and the rear push rod, it can ensure that the part is placed in an unchanged position during measurement, and its measurement accuracy will not be affected by the experience and skills of the personnel. It has the advantages of convenient operation and high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the height measurement for the utility model;

[0017] Figure 2 It is a side view of the utility model for measuring diameter;

[0018] Figure 3 A plan view for diameter measurement of the utility model;

[0019] Figure 4 This is a schematic diagram of the taper measurement of the utility model.

[0020] Markings in the figure: 1. Measuring platform; 2. First column; 3. Second column; 4. Third column; 5. First measuring table; 6. Second measuring table; 7. Third measuring table; 8. Fourth measuring table; 9. Fixed rod; 10. Rear push rod; 11. Clamping rod; 12. Standard mother part. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As shown in the figure, a device for measuring the size of an annular part includes a measuring platform 1. Three vertically arranged columns are fixed on the upper surface of the measuring platform 1. The columns are fixed to the surface of the measuring platform 1 by bolts or welding, and mainly serve as support members to facilitate the installation and fixation of the measuring table and the push rod.

[0023] The projections of the center lines of the three columns onto the surface of the measuring platform 1 are arranged in an isosceles triangle. A total of four measuring gauges are installed on the three columns, of which the measuring rods of three measuring gauges are in contact with the circumferential outer wall of the annular part, and the measuring rod of another measuring gauge is in contact with the upper end surface of the annular part; push rods for positioning the parts are installed on two of the columns, and the front end of the push rods can abut against the circumferential outer wall of the part.

[0024] The three columns are respectively a first column 2, a second column 3 and a third column 4 installed above the measuring platform 1, and the vertical distance between the first column 2 and the second column 3 is equal to the vertical distance between the first column 2 and the third column 4;

[0025] The four measuring meters are respectively a first measuring meter 5 installed on the first column 2, a second measuring meter 6 installed on the second column 3, and a third measuring meter 7 and a fourth measuring meter 8 installed on the third column 4;

[0026] The measuring rod of the first measuring gauge 5 is in contact with the upper surface of the part, and the measuring rods of the second measuring gauge 6, the third measuring gauge 7 and the fourth measuring gauge 8 are respectively in contact with the circumferential outer wall of the part; wherein, the first measuring gauge 5 is used to measure the height of the part; the second measuring gauge 6 is used to measure the outer diameter of the part; the third measuring gauge 7 and the fourth measuring gauge 8 work together to achieve the purpose of measuring the taper size of the part.

[0027] The measuring meter is installed on the column through the clamping rod 11. The clamping rod 11 serves as a medium to connect the measuring meter and the column. It has the function of facilitating the adjustment of the position of the measuring meter and is locked by means of threads. The structure and principle of the clamping rod 11 belong to conventional means in the prior art and will not be elaborated on here.

[0028] The push rods include a rear push rod 10 installed on the first column 2, and a fixed rod 9 installed on the third column 4, wherein the fixed rod 9 and the rear push rod 10 are both connected to the columns in a threaded manner, and their respective positions can be locked after the position adjustment is completed. During measurement, the fixed rod 9 and the rear push rod 10 are used as a reference to ensure that the position of the part remains unchanged each time. More specifically, the bottom surface of the part fits with the upper surface of the measuring platform 1, and the part can be placed in place by only abutting the outer wall of the part against the fixed rod 9 and the rear push rod 10 respectively, thereby facilitating subsequent dimensional measurement and improving measurement efficiency.

[0029] The measuring gauge is a dial gauge, a micrometer or a universal gauge. In this example, all four measuring gauges are micrometers. In addition, a dial gauge with low accuracy or a universal gauge with high accuracy can also be selected according to actual measurement requirements.

[0030] When the annular part dimension measuring device is used, the positions of all measuring gauges are first adjusted using the standard mother part 12 to facilitate efficient measurement of subsequent part dimensions.

[0031] Apply red lead powder to the standard master part 12 (for observing the contact position when adjusting the instrument) and place it on the measuring platform 1. Figure 2 Fix the height of rod 9 so that it contacts the middle of the standard part. Rotate the part for one circle, and the red lead powder will show the contact height between the fixing rod 9 and the standard part. Adjust the height position of the second measuring table 6 so that the measuring position is located where the red lead powder shows the trace.

[0032] Move the standard mother part 12 back and forth so that Figure 2 After the second measuring gauge 6 shows the maximum reading, fix the rear push rod 10, and the outer diameter measurement of the instrument has been adjusted. The principle is as follows: Figure 3 The fixing rod 9 and the rear push rod 10 determine the center position of the standard mother part 12, and the straight line connecting the fixing rod 9 and the second measuring table 6 passes through the center of the circle, so that the diameter size can be measured.

[0033] Adjust the height positions of the third measuring gauge 7 and the fourth measuring gauge 8 so that the readings are consistent with the taper value of the standard mother part 12. Figure 4 If there is a deviation in taper between the part to be tested and the standard mother part 12, the indications of the third measuring table 7 and the fourth measuring table 8 will change. If the deviation is within a certain range, the taper value of the part meets the design requirements.

[0034] Adjustment Figure 1 The height and front-to-back position of the first measuring table 5 are made to contact the standard mother part 12, and the distance between the surface of the measuring platform 1 and the first measuring table 5 is the height dimension.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for measuring the size of annular parts, characterized in that: It comprises a measuring platform, on the upper surface of which three vertically arranged columns are fixed, the projections of the center lines of the three columns onto the surface of the measuring platform are arranged in an isosceles triangle, a total of four measuring gauges are installed on the three columns, measuring rods of three of the measuring gauges are in contact with the circumferential outer walls of the annular parts, and the measuring rod of another measuring gauge is in contact with the upper end surface of the annular part; ejector rods for positioning the parts are installed on two of the columns, and the front ends of the ejector rods can abut against the circumferential outer walls of the parts.

2. The annular part size measuring device according to claim 1, characterized in that: The three columns are respectively a first column, a second column and a third column installed above the measuring platform, and the vertical distance between the first column and the second column is equal to the vertical distance between the first column and the third column; The four measuring meters are respectively a first measuring meter installed on the first column, a second measuring meter installed on the second column, and a third measuring meter and a fourth measuring meter installed on the third column; The measuring rod of the first measuring gauge contacts the upper surface of the part, and the measuring rods of the second measuring gauge, the third measuring gauge and the fourth measuring gauge abut against the circumferential outer wall of the part respectively.

3. The annular part size measuring device according to claim 2, characterized in that: The measuring gauge is mounted on the column via a clamping rod.

4. The annular part size measuring device according to claim 2, characterized in that: The push rod comprises a rear push rod installed on the first column and a fixing rod installed on the third column.

5. The annular part size measuring device according to claim 1, characterized in that: The measuring gauge is a dial gauge, a micrometer or a multimeter.

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