Differential planetary gear spherical surface testing fixture

Abstract

The utility model discloses a differential planetary gear spherical surface testing fixture, which comprises a spherical surface gauge, a gear body is placed on the spherical surface gauge, a dial indicator is arranged above the spherical surface gauge, a measuring gauge rod of the dial indicator is connected with an extension bar through a bolt, and the lower end of the dial indicator is fixed with a base through a bolt. According to the differential planetary gear spherical surface testing fixture, zero calibration and workpiece spherical surface height detection can be rapidly carried out through the spherical surface standard gauge in a production field, the SR qualification condition of the spherical surface can be judged through the contact area and the contact gap between the workpiece spherical surface and the spherical surface gauge, rapid measurement and judgment in the production field can be conveniently realized, the detection efficiency is improved, and the production cost is reduced. The device is simple in overall structure, convenient to use, high in detection efficiency and suitable for being used by station operators on site, the spherical height and the spherical SR contact of a workpiece are detected at the same time, the influence of measurement deterioration in the process is effectively reduced, and the detection result is more accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear detection, in particular to a spherical gauge for differential planetary gears. Background Technique

[0002] The back of the planetary bevel gear is a spherical surface. Since the spherical surface is a curved body, the detection indexes are divided into spherical height and spherical SR. The spherical height generally refers to the distance from the pitch cone to the spherical surface, and is mostly converted into height measurement by comparing with a sample part on site, which is greatly affected by measurement variations such as the tooth profile accuracy of the comparison sample part itself; while the spherical SR generally uses a spherical gauge on site, and the spherical height cannot be measured simultaneously, resulting in low efficiency. Therefore, in view of the above problems, a spherical gauge for differential planetary gears is designed to better meet the actual use requirements. Content of the Utility Model

[0003] The purpose of the utility model is to provide a spherical gauge for differential planetary gears to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a spherical gauge for differential planetary gears, including a spherical gauge, on which a gear body is placed, a dial indicator is arranged above the spherical gauge, the measuring rod of the dial indicator is connected to an extension rod through a bolt, the lower end of the dial indicator is fixed to a base through a bolt, the base is fixed to a connection plate through a bolt, and a cylinder is fixed to the lower end surface of the connection plate through a bolt.

[0005] Preferably, an arc-shaped positioning hole is formed on the upper end surface of the spherical gauge, and the positioning hole is nested with the gear body. Through the function of the positioning hole, it is convenient to position the gear body and determine the arc surface of the gear body.

[0006] Preferably, a dial is arranged on the dial indicator, and a pointer is also installed on the dial indicator. Through the above structure, it is convenient to read the value, thus realizing the measurement function.

[0007] Preferably, the measuring rod of the dial indicator penetrates through the base, the connection plate and the cylinder, and the measuring rod of the dial indicator is slidably connected to the base, the connection plate and the cylinder. Through the sliding action between the measuring rod of the dial indicator and the base, the connection plate and the cylinder, the normal use of the device can be ensured.

[0008] Preferably, the central axes of the base, the connection plate and the cylinder coincide with the central axis of the spherical gauge. By limiting the positions of the central axes of the base, the connection plate and the cylinder, the accuracy of the detection data can be ensured.

[0009] Preferably, a toothed die is also fixedly arranged inside the cylinder at equal angles, and the toothed die cooperates with the gear body to achieve a positioning function. Through the interaction between the toothed die and the gear body, the positioning function between the cylinder and the gear body can be realized, thereby realizing the positioning function of the entire device and the gear body, and ensuring the normal progress of detection.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: This differential planetary gear spherical gauge can be quickly zeroed on-site during production through a spherical standard gauge. While detecting the spherical height of the workpiece, it can judge the qualification of the spherical SR by the contact area and contact gap between the spherical surface of the workpiece and the spherical gauge. This gauge can facilitate quick measurement and judgment on-site during production, improve the inspection efficiency, and the overall structure of the device is simple, easy to use, has high detection efficiency, and is suitable for on-site use by station operators. It can realize the simultaneous detection of the spherical height and spherical SR contact of the workpiece, and effectively reduce the influence of process measurement variation, making the detection results more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a front exploded three-dimensional structural schematic diagram of the overall composition of the device of the present utility model;

[0012] Figure 2 is a front three-dimensional structural schematic diagram of the overall composition of the device of the present utility model;

[0013] Figure 3 is a front sectional structural schematic diagram of the overall composition of the device of the present utility model.

[0014] In the figure: 1, spherical gauge; 101, positioning hole; 2, gear body; 3, dial indicator; 301, dial; 302, pointer; 4, extension rod; 5, base; 6, connecting plate; 7, cylinder; 701, toothed die. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figures 1 - 3, the present utility model provides a technical solution: a differential planetary gear spherical gauge, including a spherical gauge 1, on which a gear body 2 is placed, above the spherical gauge 1 there is a dial indicator 3, the measuring rod of the dial indicator 3 is connected to an extension rod 4 through a bolt, the lower end of the dial indicator 3 is fixed to a base 5 through a bolt, the base 5 is fixed to a connection plate 6 through a bolt, and a cylinder 7 is fixed to the lower end face of the connection plate 6 through a bolt.

[0017] The upper end face of the spherical gauge 1 is provided with a positioning hole 101 having an arc-shaped structure, and the positioning hole 101 is nested with the gear body 2; the dial indicator 3 is provided with a dial 301, and a pointer 302 is also installed on the dial indicator 3; the measuring rod on the dial indicator 3 passes through the base 5, the connection plate 6 and the cylinder 7, and the measuring rod on the dial indicator 3 is slidably connected to the base 5, the connection plate 6 and the cylinder 7; the central axes of the base 5, the connection plate 6 and the cylinder 7 coincide with the central axis of the spherical gauge 1; inside the cylinder 7, tooth molds 701 are equally angularly fixed, and the tooth molds 701 cooperate with the gear body 2 to achieve a positioning function;

[0018] When using this differential planetary gear spherical gauge, as Figures 1 - 3 shown, first, the spherical standard gauge is fitted with the positioning hole 101, and the plane of the tooth mold 701 is positioned and fitted with the spherical standard gauge. At this time, the measuring rod of the dial indicator 3 contacts the spherical standard gauge, so that the zero position of the dial indicator 3 can be adjusted. Then, the spherical standard gauge is removed. The installation of the extension rod 4 can be achieved through the threaded connection between the extension rod 4 and the measuring rod on the dial indicator 3. The spherical surface of the gear body 2 is placed downward and fitted with the positioning hole 101, and the tooth mold 701 is fitted with the gear body 2. Observe the gap between the spherical surface of the gear body 2 and the positioning hole 101. At the same time, the dial indicator 3 will generate a change amount. During inspection, as long as the change amount is within the dimensional tolerance range, and at the same time, the painted area of the contact region between the gear body 2 and the positioning hole 101 is greater than or equal to the required value, it can be determined that the spherical height of the workpiece is qualified. This is the working principle of this differential planetary gear spherical gauge.

[0019] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A differential planetary gear spherical gauge, comprising a spherical gauge (1), characterized in that: A gear body (2) is placed on the spherical gauge (1). A dial indicator (3) is arranged above the spherical gauge (1). The measuring rod of the dial indicator (3) is connected to an extension rod (4) through a bolt. The lower end of the dial indicator (3) is fixed to a base (5) through a bolt. The base (5) is fixed to a connecting disc (6) through a bolt. A cylinder (7) is fixed to the lower end face of the connecting disc (6) through a bolt.

2. The spherical gauge for differential planet gears according to claim 1, characterized in that: The upper end face of the spherical gauge (1) is provided with a positioning hole (101) having an arc-shaped structure, and the positioning hole (101) and the gear body (2) are in a nested connection.

3. A spherical gauge for differential planet gears according to claim 1, characterized in that: The dial indicator (3) is provided with a dial (301), and a pointer (302) is also installed on the dial indicator (3).

4. A spherical gauge for differential planet gears according to claim 1, characterized in that: The measuring rod on the dial indicator (3) passes through the base (5), the connecting disc (6) and the cylinder (7), and the measuring rod on the dial indicator (3) is in a sliding connection with the base (5), the connecting disc (6) and the cylinder (7).

5. A spherical gauge for differential planet gears according to claim 1, characterized in that: The central axes of the base (5), the connecting disc (6) and the cylinder (7) coincide with the central axis of the spherical gauge (1).

6. The spherical gauge for differential planetary gears according to claim 1, characterized in that: Tooth molds (701) are evenly fixed at equal angles inside the cylinder (7), and the tooth molds (701) cooperate with the gear body (2) to achieve a positioning function.

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