CN202614147U - Device for measuring center height of ball groove of besides-star wheel - Google Patents

Abstract

The utility model provides a measuring device for the center height of an outer star wheel fairway, which includes a measuring frame, on which a dial indicator, a lever and a movable test rod are arranged, and one end of the lever conflicts with the measuring head of the dial indicator, The other end of the lever conflicts with the benchmark on the test rod. The bottom of the test rod is provided with a ball holder, and at least three positioning balls are evenly distributed on the circumference of the ball holder. During the measurement, the outer star wheel is fixed on the fixture, and the ball holder extends into the outer star wheel, and the positioning ball is correspondingly matched with the outer star wheel fairway. The center height measuring device of the outer star wheel fairway of the utility model has a simple structure and is convenient for production; it has high measurement accuracy and is easy to use, and can measure various types of outer star wheels, thereby improving production efficiency.

Description

Outer star wheel fairway center height measuring device

technical field

The utility model relates to a measuring tool, in particular to a measuring device for the center height of an outer star wheel fairway.

Background technique

As the key parts of the constant velocity universal joint, the outer star wheel, ball cage and inner star wheel are divided into RE, AC, UF, VL and other parts according to their joint types. The dimensional accuracy of the center height is very high, which directly affects the performance of the assembly.

The measurement of the center height of the outer star wheel fairway of precision forging parts is usually compared and measured on a two-point center height measuring tool. Because the profile shape error of the outer planet wheel fairway of precision forging parts is too large, the measurement is unstable and inaccurate. If there is no reliable special measuring tool to measure, only use three-coordinate measurement, which will cause a long downtime of the machine tool on site, and is not conducive to the quality control of the process. The measurement of the center height of the outer star wheel fairway is generally detected by the German ZEISS three-coordinate measuring instrument. The advantage of this method is that it is more accurate, but the measurement time is very long. If the measurement auxiliary time is added, it will take more time. For frequent measurement occasions, this measurement method is extremely unfavorable for quality control in the process.

Chinese patent CN201407975Y discloses a ball cage, an inner star wheel inner and outer spherical center height measuring tool, which includes a limit column, a fixed probe, a movable probe, a measuring rod and a dial gauge, and the middle of the measuring rod is hinged on the limit On the column, the upper end of the measuring rod is connected to the movable measuring head, the lower end of the measuring rod is against the measuring head of the dial indicator, the dial indicator is fixed on the limit column, and the fixed The measuring head is arranged on the limit post. It calculates the center height of the inner star wheel or the ball cage by comparison and measurement, but it is not suitable for this measurement device due to the large error in the outer profile of the outer star wheel.

Therefore, there is a lack of a measuring device for the center height of the outer star wheel fairway, which should not only be able to measure conveniently and quickly, but also be able to adapt to the process control of small batch and multi-variety processing, which is helpful for improving production efficiency.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a measuring device for the center height of the outer star wheel fairway, which is used to solve the problem that the center height of the outer star wheel fairway cannot be quickly measured in the prior art.

In order to achieve the above purpose and other related purposes, the utility model provides a measuring device for the center height of the outer star wheel fairway, including a measuring frame, on which a dial indicator, a lever and a movable test rod are arranged, and one end of the lever is connected to the The measuring head of the above-mentioned dial indicator conflicts, and the other end of the lever conflicts with the benchmark on the test rod. The bottom of the test rod is provided with a ball holder, and at least three positioning balls are evenly distributed on the circumference of the ball holder. Just below is provided with the clamp that fixes the outer star wheel, and during measurement, the outer star wheel is fixed on the fixture, and the described ball holder extends into the outer star wheel, and the positioning ball is matched with the outer star wheel fairway.

Preferably, the diameter of the positioning ball is the same as the corresponding diameter of the arc section of the outer star wheel fairway.

Preferably, the fixture is fixed on the measuring frame by bolts.

Preferably, the clamp has a stepped hole through which the shank of the outer star wheel passes.

Preferably, the ball holder includes a connecting column, the top of the connecting column is connected with the test rod, the bottom of the connecting column is provided with a circle of grooves for placing the positioning ball, and a plurality of limiters are arranged in the groove. position post, and the positioning ball is placed between two adjacent limit posts.

Preferably, support legs are provided at the bottom of the measuring frame.

As mentioned above, the height measuring device for the center of the outer star wheel fairway of the utility model has the following beneficial effects: its structure is simple and convenient for production; the contact between the positioning ball and the arc segment is used to realize the close fit between the arc surface and the arc surface, and the alien The bottom of the wheel drum is the datum plane, the distance between the datum plane and the center of the positioning ball can be used as a comparison value for the measurement of the center height of the outer star wheel. It has high measurement accuracy and is easy to use. It can measure various types of outer star wheels and improve production efficiency.

Description of drawings

Fig. 1 shows the front view of the height measuring device for the center of the outer star wheel fairway of the present invention.

Fig. 2 shows the side view of the height measuring device for the center of the outer star wheel fairway of the present invention.

Component designation description

1 measuring frame

2 dial indicator

3 leverage

4 test rod

41 benchmark

5 ball holder

51 connecting column

52 limit post

53 Groove

6 set ball

7 Fixtures

8 supporting legs

Detailed ways

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

Please refer to Figure 1 to Figure 2. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

As shown in Fig. 1 and Fig. 2, the utility model provides a kind of measuring device for the height of the center of the outer star wheel fairway, comprising a measuring frame 1, which is provided with a dial indicator 2, a lever 3 and a test rod 4 which is movable. One end of the lever 3 is in conflict with the measuring head of the dial indicator 2, and the other end of the lever 3 is in conflict with the benchmark 41 on the test rod 4. The bottom of the test rod 4 is provided with a ball holder 5, which is evenly distributed on the circumference of the ball holder 5. At least three positioning balls 6 are provided with a fixture 7 for fixing the outer star wheel directly below the ball holder 5. The test rod 4 is mounted on the measuring frame 1 and can move up and down. When measuring, the outer star wheel is fixed on the fixture 7, the ball holder 5 stretches in the outer star wheel, and the positioning ball 6 is correspondingly matched with the outer star wheel fairway. The utility model adopts three positioning balls to locate the center height of the outer star wheel fairway, because the outer star wheel fairway is composed of an arc segment and a straight line end, and the arc segment is located at the two ends of the outer star wheel fairway, therefore, the positioning ball and the straight line end are used. The contact of the arc segment realizes the close fit between the arc surface and the arc surface. The bottom of the outer star wheel drum is the reference plane, and the distance between the reference plane and the center of the positioning ball can be used as a comparison value for measuring the center height of the outer star wheel fairway. When measuring, first fix the standard part of the outer star wheel on the fixture, and perform standard adjustment. At this time, adjust the reading of the dial indicator to zero; fix the outer star wheel to be tested on the fixture again, and read the reading of the dial indicator , if the reading is within the error range, the center height of the outer star wheel to be tested is qualified, and if it exceeds the error range, the center height of the outer star wheel to be tested is unqualified.

As shown in Figure 2, the above-mentioned ball holder 5 includes a connecting column 51, the top of the connecting column 51 is connected with the test rod 4, and the bottom end of the connecting column 51 is provided with a circle of grooves 52 for placing the positioning ball 6, in the groove 53 A plurality of limit posts 52 are arranged inside, and the positioning ball 6 is placed between two adjacent limit posts 52 . To facilitate the installation and replacement of the positioning ball, the above-mentioned groove 53 is surrounded by a first limiting plate fixed on the connecting column 51 and a second limiting plate bolted to the bottom of the connecting column. The above-mentioned fixture 7 is fixed on the measuring frame 1 by bolts. The fixture 7 has a step hole through which the shank of the outer star wheel is pierced. Measurement of the center height of various outer star wheels. The bottom of the measuring frame 1 is provided with supporting legs 8 .

In order to improve the measurement accuracy, the diameter of the above-mentioned positioning ball 6 is the same as the corresponding diameter of the outer star wheel fairway arc section, and the positioning ball can be replaced according to the difference of the measured outer star wheel.

To sum up, the measuring device for the center height of the outer star wheel fairway of the present invention has a simple structure and is convenient for production, but has high measurement accuracy and is easy to use. It can measure various types of outer star wheels and improves production efficiency. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (6)

1. out star wheel alley height of center measurement mechanism; It is characterized in that, comprise measurement bay (1), measurement bay (1) is provided with dial gauge (2), lever (3) and the movable reference test bar (4) that is provided with; The gauge head of one end of lever (3) and said dial gauge (2) is conflicted; Mark post (41) on the other end of lever (3) and the reference test bar (4) is conflicted, and the bottom of reference test bar (4) is provided with holding frame (5), frame (5) week upwards is uniformly distributed with at least three place kick (6) in holding; Under holding frame (5), be provided with the anchor clamps (7) that fixing out star wheel is used; During measurement, out star wheel is fixed on the said anchor clamps (7), and said holding frame (5) stretches into said place kick (6) and out star wheel alley corresponding matching in the out star wheel.

2. out star wheel alley height of center measurement mechanism according to claim 1 is characterized in that: the diameter of said place kick (6) is identical with the corresponding diameter of said out star wheel alley arc section.

3. out star wheel alley height of center measurement mechanism according to claim 1 is characterized in that: said anchor clamps (7) are through being bolted on the said measurement bay (1).

4. out star wheel alley height of center measurement mechanism according to claim 1, it is characterized in that: said anchor clamps have the stepped hole that the out star wheel shank wears on (7).

5. out star wheel alley height of center measurement mechanism according to claim 1; It is characterized in that: said holding frame (5) comprises joint pin (51); The top of joint pin (51) links to each other with said reference test bar (4); The bottom of joint pin (51) is provided with a circle groove (53) of placing said place kick, in groove, is provided with a plurality of limited posts (52), and said place kick (6) places between adjacent two limited posts (52).

6. out star wheel alley height of center measurement mechanism according to claim 1, it is characterized in that: the bottom of said measurement bay (1) is provided with supporting leg (8).

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