Precision measuring tube ruler for backing bearing part
By designing the accuracy measuring tube ruler of the backing bearing parts, combined with the measuring rod, support mechanism and dial gauge, the problem that existing measurement tools cannot measure the size, ellipticity and perpendicularity at the same time is solved, and efficient detection of the shape and position accuracy of the bearing parts is achieved.
Patent Information
- Application Number
- CN202422549177.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing measuring tube rulers cannot measure the size, ovality and perpendicularity of backing bearing parts at the same time, resulting in the inability to effectively detect the shape and position accuracy of the bearing parts.
A backing bearing parts accuracy measuring tube ruler is designed, including a measuring rod, a measuring support mechanism and a dial gauge. Through rotary support and fixed support structure, the ellipticity and perpendicularity of the bearing outer ring raceway are measured.
It realizes the precise measurement of the ellipticity and perpendicularity of the outer ring raceway of the bearing while measuring the size, and improves the detection accuracy of bearing parts.
Smart Images
Figure CN223179451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a measuring pipe ruler, in particular to a precision measuring pipe ruler for back-up bearing parts. Background Art
[0002] Due to the heavy self-weight of the back-up bearing, it is extremely inconvenient to move and take it when using an instrument for measurement during processing. Among the existing measuring tools for back-up bearing parts, the measuring pipe ruler is the most commonly used measuring tool. The traditional measuring pipe ruler is composed of parts such as a straight pipe, a positioning support, and a dial gauge holder. During measurement, according to the principle that two points determine a straight line, the diameter size of the part can be determined by finding the maximum point. Due to the structure of the existing measuring pipe ruler, it can only measure the size of the part and cannot judge the shape of the part such as roundness. Because the definition of the roundness of a bearing part is: the variation of the diameter within a single plane. Therefore, to measure the roundness, all the diameters within this plane need to be measured, and the roundness of the bearing can be obtained based on the variation of the diameters.
[0003] However, the structure of the existing pipe ruler makes it impossible to measure the shape and position accuracy such as the roundness and perpendicularity difference of the part, and the shape and position accuracy are important inspection items in the processing of bearing parts. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide a precision measuring pipe ruler for back-up bearing parts that can complete the measurement of the roundness and perpendicularity of the outer raceway of the bearing while measuring the size.
[0005] The utility model is realized as follows: A precision measuring pipe ruler for back-up bearing parts includes a measuring rod, a measuring support mechanism, and a micrometer. The measuring rod includes a first measuring sub-rod, a second measuring sub-rod, and a third measuring sub-rod. The first measuring sub-rod and the second measuring sub-rod are connected in a straight line. One end of the third measuring sub-rod is connected to the connection part of the first measuring sub-rod and the second measuring sub-rod, and the axis of the third measuring sub-rod is perpendicular to the axes of the first measuring sub-rod and the second measuring sub-rod;
[0006] A first end face support and the measuring support mechanism are provided on the first measuring sub-rod, the micrometer is fixed on the measuring support mechanism, a second end face support and a second fixed support are provided on the second measuring sub-rod, and a third end face support and a first fixed support are provided on the third measuring sub-rod;
[0007] The measuring support mechanism includes a rotating upper support and a rotating lower support. The upper end of the rotating upper support is fixed on the first measuring sub-rod. The lower end of the rotating upper support is connected to the upper part of the rotating lower support through a rotating spring-back mechanism. The rotating lower support can rotate along the rotating shaft mechanism of the rotating spring-back mechanism, and the micrometer is fixed on the rotating lower support.
[0008] The rotation and resilience mechanism includes a mandrel, a bearing and a spring. The mandrel passes through the lower end of the upper rotation support and the upper end of the lower rotation support. The mandrel is connected to the upper end of the lower rotation support through the bearing. One end of the spring is fixed to one end of the mandrel, and the other end of the spring is fixed to one side of the lower rotation support. The mandrel is located below the first measuring rod, and the axis of the mandrel is perpendicular to the axis of the first measuring rod in space. The mandrel (13) and the bearing (14) form the rotating shaft mechanism.
[0009] The upper end of the first fixed support is sleeved on the third measuring rod. The first fixed support is provided with a first fulcrum, and the first fulcrum is fixed to the first fixed support through a first fulcrum seat.
[0010] The upper end of the second fixed support is sleeved on the second measuring rod. The second fixed support is provided with a second fulcrum, and the second fulcrum is fixed to the second fixed support through a second fulcrum seat.
[0011] Above the dial indicator, a zero-setting screw is provided on the lower rotation support. The zero-setting screw is fixed to the lower rotation support through a zero-setting screw seat.
[0012] The dial indicator is fixed to the lower rotation support through a dial indicator fixing seat.
[0013] The beneficial effects of the present utility model are as follows: Through the T-shaped measuring rod formed by the first measuring rod, the second measuring rod and the third measuring rod, as well as the measuring support mechanism, the first fixed support and the second fixed support, while measuring the size, the measurement of the ovality and perpendicularity of the raceway of the outer ring of the bearing is completed. Through the upper rotation support and the lower rotation support of the measuring support mechanism, the measurement of the accuracy of the raceway of the outer ring of the ribbed bearing is realized. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the present utility model. [[ID=2」]]
[0015] Figure 2 is Figure 1 a schematic diagram of the positional relationship between the sectional structure in the A-A direction in and the workpiece of the bearing to be measured.
[0016] Figure 3 is Figure 1 a schematic diagram of the positional relationship between the sectional structure in the B-B direction in and the workpiece of the bearing to be measured.
[0017] Figure 4 is a schematic side view structure of the measuring support mechanism of the present utility model.
[0018] Figure 5 isFigure 4 Schematic cross-sectional structure diagram in the C-C direction.
[0019] Figure 6 It is a schematic structure diagram when the rotating lower support of the measuring support mechanism of the present utility model rotates along the rotating shaft mechanism of the rotating rebound mechanism.
[0020] Figure 7 is Figure 6 Schematic cross-sectional structure diagram in the D-D direction.
[0021] Wherein: 1. First measuring sub-rod; 2. Second measuring sub-rod; 3. Third measuring sub-rod; 4. First end face support; 5. Measuring support mechanism; 6. Dial indicator; 7. Second end face support; 8. Second fixed support; 9. Third end face support; 10. First fixed support; 11. Rotating upper support; 12. Rotating lower support; 13. Mandrel; 14. Bearing; 15. Spring; 16. First fulcrum; 17. First fulcrum seat; 18. Second fulcrum; 19. Second fulcrum seat; 20. Zeroing screw; 21. Zeroing screw seat; 22. Dial indicator fixing seat; 23. Hexagon socket head cap screw; 24. Measured bearing workpiece. Specific embodiments
[0022] According to Figures 1-7 , the present utility model is a precision measuring pipe ruler for a back-up bearing part, including a measuring rod, a measuring support mechanism 5 and a dial indicator 6. The measuring rod includes a first measuring sub-rod 1, a second measuring sub-rod 2 and a third measuring sub-rod 3. The first measuring sub-rod 1 and the second measuring sub-rod 2 are connected in a straight line, and one end of the third measuring sub-rod 3 is connected to the connection part of the first measuring sub-rod 1 and the second measuring sub-rod 2, and the axis of the third measuring sub-rod 3 is perpendicular to the axes of the first measuring sub-rod 1 and the second measuring sub-rod 2; the first measuring sub-rod 1, the second measuring sub-rod 2 and the third measuring sub-rod 3 are jointly connected to form a T-shaped measuring rod.
[0023] The first measuring sub-rod 1 is provided with a first end face support 4 and the measuring support mechanism 5, and the dial indicator 6 is fixed on the measuring support mechanism 5. The measuring support mechanism 5 includes a rotating upper support 11 and a rotating lower support 12. The upper end of the rotating upper support 11 is fixed on the first measuring sub-rod 1, and the lower end of the rotating upper support 11 is connected to the upper part of the rotating lower support 12 through a rotating rebound mechanism. According to Figure 4 and Figure 6The rotating lower support 12 can rotate counterclockwise along the rotating shaft of the rotating rebound mechanism. Specifically, the dial gauge 6 is fixed to the rotating lower support 12 via a dial gauge fixing seat 22. A zeroing screw 20 is provided above the dial gauge 6 on the rotating lower support 12. The zeroing screw 20 is fixed to the rotating lower support 12 via a zeroing screw seat 21. The zeroing screw 20 facilitates zeroing of the dial gauge 6.
[0024] Furthermore, the rotational rebound mechanism includes a core shaft 13, a bearing 14, and a spring 15. The core shaft 13 passes through the lower end of the rotating upper support 11 and the upper end of the rotating lower support 12. The core shaft 13 is connected to the upper end of the rotating lower support 12 via the bearing 14. One end of the spring 15 is fixed to one end of the core shaft 13, and the other end of the spring 15 is fixed to one side of the rotating lower support 12 via a hexagon socket screw 23. The core shaft 13 is located below the first measuring rod 1, and the axis of the core shaft 13 is perpendicular to the axis of the first measuring rod 1. The core shaft 13 and the bearing 14 together constitute the rotating shaft mechanism. When in use, the rotating lower support 12 can rotate along the core shaft 13 and be tightened by the spring 15, which facilitates the measurement of the raceway accuracy of parts with ribs and is more convenient for measuring the accuracy of the outer ring of bearings with ribs.
[0025] The second measuring branch rod 2 is provided with a second end face support 7 and a second fixed support 8, and the third measuring branch rod 3 is provided with a third end face support 9 and a first fixed support 10; the upper end of the first fixed support 10 is sleeved on the third measuring branch rod 3, and the first fixed support 10 is provided with a first fulcrum 16, and the first fulcrum 16 is fixed to the first fixed support 10 through a first fulcrum seat 17.
[0026] The upper end of the second fixed support 8 is sleeved on the second measuring sub-rod 2 . A second fulcrum 18 is provided on the second fixed support 8 . The second fulcrum 18 is fixed on the second fixed support 8 via a second fulcrum seat 19 .
[0027] When the present invention is in use, the function of the three end face supports, namely the first end face support 4, the second end face support 7 and the third end face support 9, is to determine a measuring plane with three points; the function of the two fixed supports, namely the first fixed support 10 and the second fixed support 8, is to first use the second fulcrum 18 on the second fixed support 8 as a fulcrum, find the diameter of the measured bearing workpiece 24 by rotating the thousandth 6 on the lower support 12, tighten the first fulcrum 16 on the first fixed support 10 as an auxiliary fulcrum, and then ensure that the measuring point is always the part diameter.
[0028] If the measured surface formed by the measuring point of the dial indicator 6, the first fulcrum 16, and the second fulcrum 18 is parallel to the plane determined by the three end face supports, namely the first end face support 4, the second end face support 7, and the third end face support 9, then by rotating and measuring the measured surface of the bearing workpiece 24 to be measured for more than one week with the present utility model, that is, continuously measuring the diameters of different points on the measured surface for one week, the change amount of these diameters is the ellipse of the measured surface of the bearing workpiece 24 to be measured.
[0029] If the measured surface formed by the fulcrum of the zero-setting screw 20, the first fulcrum 16, and the second fulcrum 18 is parallel to the plane determined by the three end face supports, namely the first end face support 4, the second end face support 7, and the third end face support 9, and the measuring point of the dial indicator 6 is lower than the measuring point of the zero-setting screw 20 according to the measurement value specified by the process and is in the same axial plane of the bearing, then by rotating and measuring the measured surface of the bearing workpiece 24 to be measured for more than one week with the present utility model, the change amount of the dial indicator is the vertical difference of the measured surface. The measurement of the ovality and perpendicularity of the outer ring raceway of the bearing is completed.
Claims
1. A precision measuring pipe ruler for a backing bearing part, characterized in that: It includes a measuring rod, a measuring support mechanism (5) and a micrometer (6). The measuring rod includes a first measuring sub-rod (1), a second measuring sub-rod (2) and a third measuring sub-rod (3). The first measuring sub-rod (1) and the second measuring sub-rod (2) are connected in a straight line. One end of the third measuring sub-rod (3) is connected to the connection part of the first measuring sub-rod (1) and the second measuring sub-rod (2), and the axis of the third measuring sub-rod (3) is perpendicular to the axes of the first measuring sub-rod (1) and the second measuring sub-rod (2). A first end face support (4) and the measuring support mechanism (5) are provided on the first measuring sub-rod (1). The micrometer (6) is fixed on the measuring support mechanism (5). A second end face support (7) and a second fixed support (8) are provided on the second measuring sub-rod (2). A third end face support (9) and a first fixed support (10) are provided on the third measuring sub-rod (3). The measuring support mechanism (5) includes a rotating upper support (11) and a rotating lower support (12). The upper end of the rotating upper support (11) is fixed on the first measuring sub-rod (1). The lower end of the rotating upper support (11) is connected to the upper part of the rotating lower support (12) through a rotating spring-back mechanism. The rotating lower support (12) can rotate along the rotating shaft mechanism of the rotating spring-back mechanism. The micrometer (6) is fixed on the rotating lower support (12).
2. The precision measuring pipe ruler for a backing bearing part according to claim 1, wherein: The rotating spring-back mechanism includes a core shaft (13), a bearing (14) and a spring (15). The core shaft (13) passes through the lower end of the rotating upper support (11) and the upper end of the rotating lower support (12). The core shaft (13) is connected to the upper end of the rotating lower support (12) through the bearing (14). One end of the spring (15) is fixed to one end of the core shaft (13), and the other end of the spring (15) is fixed to one side of the rotating lower support (12). The core shaft (13) is located below the first measuring sub-rod (1), and the axis of the core shaft (13) is spatially perpendicular to the axis of the first measuring sub-rod (1). The core shaft (13) and the bearing (14) form the rotating shaft mechanism.
3. A precision measuring pipe ruler for a backing bearing part according to claim 1, characterized in that: The upper end of the first fixed support (10) is sleeved on the third measuring sub-rod (3). A first fulcrum (16) is provided on the first fixed support (10). The first fulcrum (16) is fixed on the first fixed support (10) through a first fulcrum seat (17).
4. A precision measuring pipe ruler for a backing bearing part according to claim 1, characterized in that: The upper end of the second fixed support (8) is sleeved on the second measuring sub-rod (2). A second fulcrum (18) is provided on the second fixed support (8). The second fulcrum (18) is fixed on the second fixed support (8) through a second fulcrum seat (19).
5. A precision measuring pipe ruler for a backing bearing part according to claim 1, characterized in that: Above the micrometer (6), a zero-setting screw (20) is provided on the rotating lower support (12). The zero-setting screw (20) is fixed on the rotating lower support (12) through a zero-setting screw seat (21).
6. The precision measuring pipe ruler for a backing bearing part according to claim 1, characterized in that: The micrometer (6) is fixed on the rotating lower support (12) through a micrometer fixing seat (22).