Detection table for detecting excircles of odd gears

Abstract

The utility model, which belongs to the technical field of the gear detector, discloses a detection bench for detecting the excircle of an odd number of gears, comprising a tooth jump instrument, a tool core rod, a standard module and a dial indicator. The tooth jump instrument is connected with the tip and the dial indicator, the tip is in double-top fit with a center hole of the tool core rod, the tool core rod is in zero-clearance fit with the standard module, and the standard module and an odd number gear to be measured have the same precision standard. According to the utility model, the tool core rod is matched with the standard module for use, so that the detection platform can carry out single-measuring-point calibration, and the numerical value of the addendum circle diameter of the gear is judged through the reading value of the dial indicator, thereby realizing the same-environment zero-error single-measuring-point detection of the excircle of a line odd number gear in production.

Description

Technical Field

[0001] The utility model relates to the technical field of gear detectors, in particular to a detection table for precise detection of the outer circle of odd-numbered gears. Background Art

[0002] The testing bench for odd-numbered gear outer circle detection is a device used to measure and detect the size and shape of the outer circle of odd-numbered gears. The outer circle is also called the outer diameter. Odd-numbered gears usually refer to gears with an odd number of teeth, for example, 3 teeth, 5 teeth, 7 teeth, 9 teeth, etc.

[0003] In the specific use of existing traditional gear outer circle detection instruments such as outside diameter micrometers or calipers, when detecting the outer circle of odd-numbered gears, since the tooth opposite the measuring point is the tooth groove, the symmetrical measuring point method actually measures the size of the chord length from the tooth top to the two opposite teeth, and cannot achieve accurate measurement of the outer diameter. Laboratory testing equipment such as projectors and three-coordinate measuring instruments are affected by the environment and are not convenient for use in the workshop production line, which in turn affects the work efficiency of the staff. Therefore, in response to the above problems, a testing table for odd-numbered gear outer circle detection is proposed. After many tests, the applicant has found that the detection effect is good. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a detection table for detecting the outer diameter of odd-numbered gears, aiming to improve the problem that the prior art cannot accurately detect the outer diameter of odd-numbered gears.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A testing platform for detecting the outer circle of an odd number of gears comprises a gear jump tester, a tooling mandrel, a standard module and a micrometer.

[0007] The left end of the gear jumper is internally slidably connected with a fixed top, the left top of the gear jumper is fixedly connected with a locking nut a, and the right end of the gear jumper is internally slidably connected with a movable top;

[0008] The right top end of the gear jumper is fixedly connected to the locking nut b, the right front side of the gear jumper is fixedly connected to the movable top handle, and the tooling mandrel is fixed between the movable top and the fixed top;

[0009] The tooling mandrel is provided with a standard module, and a micrometer is fixedly installed on the gear jump meter test frame.

[0010] Furthermore, a fixed top is slidably connected to the left end of the tooth jump instrument, a locking nut a is fixedly connected to the left top of the tooth jump instrument, a movable top is slidably connected to the right end of the tooth jump instrument, a locking nut b is fixedly connected to the right top of the tooth jump instrument, a movable top handle is fixedly connected to the right front of the tooth jump instrument, a tooling mandrel is fixed between the movable top and the fixed top, the tooling mandrel is tightly connected to the standard module, and a micrometer is fixedly installed on the tooth jump instrument measuring frame.

[0011] Furthermore, rotating the locking nut a fixedly connected to the left top of the gear jump instrument can axially lock the fixed top, rotating the locking nut b fixedly connected to the right top of the gear jump instrument can axially lock the movable top, and rotating the movable top handle fixedly connected to the right front of the gear jump instrument can slide the movable top left and right.

[0012] Furthermore, the accuracy of the inner hole, outer diameter, thickness and other dimensions of the standard module is equivalent to the target dimensions of the inner hole, outer diameter and thickness of the odd-numbered gears. The tooling mandrel is also used for test bench calibration and odd-numbered gear processing. The tooling mandrel and the standard module are zero-clearance fit.

[0013] The utility model has the following beneficial effects:

[0014] 1. Through the manufacture of precision target size modules of inner hole, outer diameter and thickness, the cooperation between the module and the tooling rod is consistent with the cooperation between the odd-numbered gear and the tooling rod, and the installation cooperation error can be eliminated during comparative measurement.

[0015] 2. Calibration and measurement with the same tooling rod can also eliminate the matching error between the mounting center holes at both ends of the tooling rod and the measuring top.

[0016] 3. The test bench occupies a small area, can be easily moved, and is not restricted by the environment, so that zero-error single-point comparison measurement can be achieved in the same environment on the production line.

[0017] 4. When the reading of the odd gear rack meter is consistent with the reading of the standard module rack meter, the target outer diameter size can be obtained. Compared with the existing technology, this method effectively avoids the disadvantage of double measuring points that cannot be accurately measured, and can ensure effective precision detection of odd gear production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A simplified calibration diagram of a testing platform for detecting the outer circle of an odd-numbered gear proposed in the utility model;

[0019] In the figure: 1. Gear jump meter; 2. Movable center; 3. Tooling mandrel; 4. Standard module; 5. Micrometer; 6. Locking nut b; 7. Locking nut a; 8. Fixed center; 9. Movable center handle. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] Reference Figure 1 As shown, the utility model provides an embodiment: a test bench for detecting the outer circle of odd-numbered gears, including a tooth jump meter 1, the tooth jump meter 1 is used to install a fixed top 8, a movable top 2 and a micrometer 5, the locking nut b6 and the locking nut a7 are used to axially fix the movable top 2 and the fixed top 8; the rotating movable top handle 9 can drive the movable top 2 to move left and right to facilitate the installation of the tooling core rod 3; the tooling core rod 3 is used to install odd-numbered gears and a standard module 4; the standard module 4 and the tooling core rod 3 are used to calibrate the zero value of the micrometer 5.

[0022] Working principle: When the operator needs to measure the odd-numbered gears, he only needs to install the standard module 4 on the tooling mandrel 3, rotate the movable top handle 9, fix the tooling mandrel 3 with the standard module 4 installed between the movable top 9 and the fixed top 8, lock the locking nuts at both ends, put down the micrometer 5 probe, rotate the micrometer dial to return to the zero position to complete the calibration of the test bench; remove the tooling mandrel 3 with the standard module 4 downward, remove the standard module 4, install the odd-numbered gear to be measured on the tooling mandrel 3, rotate the movable top handle 9, the probe will fix the tooling mandrel 3 with the odd-numbered gear to be measured between the movable top 9 and the fixed top 8, slightly lift the micrometer 5 probe, rotate the tooling mandrel 3, align the micrometer 5 probe with the outer diameter of the gear to be measured, and determine the value of the gear tooth top circle diameter according to the reading value of the micrometer. Through the manufacture of precision target size modules such as inner hole, outer diameter and thickness, the cooperation between the module and the tooling rod is consistent with the cooperation between the odd-numbered gear and the tooling rod. The installation cooperation error can be eliminated during single-point comparison measurement, and the cooperation accuracy is improved. At the same time, the calibration measurement of the same tooling mandrel also eliminates the secondary cooperation error between the installation center hole at both ends of the tooling mandrel and the measuring top. This greatly improves the accuracy of the comparison test.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 testing platform for detecting the outer circle of an odd-numbered gear, comprising a tooth jump tester (1), a tooling mandrel (3), a standard module (4) and a micrometer (5), characterized in that: The left end of the tooth jump meter (1) is internally slidably connected to a fixed top (8), the left top end of the tooth jump meter (1) is fixedly connected to a locking nut a (7), and the right end of the tooth jump meter (1) is internally slidably connected to a movable top (2); The right top end of the tooth jump meter (1) is fixedly connected to a locking nut b (6), the right front end of the tooth jump meter (1) is fixedly connected to a movable top handle (9), and a tooling mandrel (3) is fixed between the movable top (2) and the fixed top (8); The tooling mandrel (3) is provided with a standard module (4), and a micrometer (5) is fixedly mounted on the measuring frame of the gear jump meter (1).

2. The detection bench for detecting the outer circle of an odd number of gears according to claim 1, characterized in that: The locking nut a (7) can axially lock the fixed top (8), the locking nut b (6) can axially lock the movable top (2), and the movable top handle (9) can be rotated to slide the movable top (2) leftward and rightward.

3. The detection platform for detecting the outer circle of an odd number of gears according to claim 1, characterized in that: The inner hole, outer diameter and thickness dimensions of the standard module (4) are equal to the inner hole, outer diameter and thickness target dimensions of the odd-numbered gears.

4. The detection platform for detecting the outer circle of an odd number of gears according to claim 1, characterized in that: The tooling mandrel (3) is simultaneously used for test bench calibration and odd-number gear processing, and the tooling mandrel (3) and the standard module (4) are zero-clearance matched.

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