CN204255267U - High-accuracy coaxiality detector - Google Patents

Abstract

The utility model discloses a high-precision coaxiality detector, which comprises a base, on which a dial indicator fixing bracket is vertically installed, and a dial indicator rotating support device is installed on the top of the dial indicator fixing bracket. A dial indicator is installed on the dial indicator rotating support device; two coaxial bearings are installed on the end of the base far away from the dial indicator fixed bracket; The sub-meter rotating support device makes the contact needle of the dial indicator contact the outer peripheral surface of the workpiece, and then rotates the workpiece to observe the reading change of the dial indicator; the utility model is simple and light in structure, easy to carry, simple and clear in operation, and Wide range; fast measurement speed and high measurement accuracy.

Description

High-precision coaxiality detector

technical field

The utility model relates to the technical field of coaxiality detection, in particular to a coaxiality detector with high detection precision.

Background technique

In the machining industry, at present most of the products are checked by using sets. Because of the manufacturing error and operating method error of the inspection tool, many misjudgments are caused to the product, and good products are mistaken for defective products, resulting in waste.

The coaxiality is different from the ordinary single size, which can be detected with a caliper. The coaxiality is a dynamic dimension, and it deviates from the center during rotation, so it is not easy to measure. At present, many in the industry use three-dimensional or kits for detection, but there are shortcomings, such as three-dimensional, high equipment, one set costs hundreds of thousands, or even millions, and the detection time is very long. The parts are okay, but if mass production requires full inspection, it is not suitable. For the inspection of sets of tools, those that are processed well and meet the conditions are the boundaries, those that are satisfied can pass through, and those that are not satisfied cannot be installed; but such inspection tools are very precise, have large operating errors, require high personnel to operate, and cannot be read. If it is an unqualified product, it is impossible to clearly understand how much the product differs, which is not conducive to adjustment and processing, and cannot provide more data for reference for production.

Utility model content

The technical problem to be solved by the utility model is to provide a high-precision coaxiality detector with simple structure, fast detection speed and high detection accuracy.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a high-precision coaxiality detector, including a base, a dial indicator fixing bracket is vertically installed on the base, and a dial indicator fixing bracket is installed on the top of the dial indicator fixing bracket. A sub-meter rotary support device, a dial indicator is installed on the dial indicator rotation support device; two coaxial bearings are installed on the end of the base away from the dial indicator fixing bracket.

As a preferred technical solution, the rotary support device for the dial gauge includes a pair of dial gauge pressure plates mounted on the top of the dial gauge fixing bracket, and dial gauge connections are installed in the two dial gauge pressure plates. One end of the dial indicator connecting rod is provided with a rotating ball head which is rotatably installed between the two dial indicator pressure plates, and the other end of the dial indicator connecting rod is installed with the dial indicator.

Due to the adoption of the above technical scheme, the high-precision coaxiality detector includes a base on which a dial indicator fixing bracket is vertically installed, and a dial indicator rotating support device is installed on the top of the dial indicator fixing bracket, so A dial indicator is installed on the rotary support device of the dial indicator; two coaxial bearings are installed on the end of the base away from the fixed bracket of the dial indicator; when measuring, the workpiece to be measured is placed in the coaxial bearing, and rotated The rotary support device of the dial indicator makes the contact needle of the dial indicator contact the outer peripheral surface of the workpiece, and then rotates the workpiece to observe the reading change of the dial indicator; the utility model has a simple and portable structure, is easy to carry, and is easy to operate Wide range of products; fast measurement speed and high measurement accuracy.

Description of drawings

Fig. 1 is the explosion diagram of the utility model embodiment;

Fig. 2 is the top view of the utility model embodiment;

Among them: 1- base; 2- dial indicator; 3- dial indicator fixing bracket; 41- dial indicator pressure plate; 42- dial indicator connecting rod; 43- rotating ball head; 5- bearing hole.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further set forth the utility model. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in Figures 1 and 2, the high-precision coaxiality detector includes a base 1, a dial indicator fixing bracket 3 is vertically installed on the base 1, and a dial indicator fixing bracket 3 is installed on the top of the dial indicator fixing bracket 3. Table rotation support device, said dial indicator rotation support device includes a pair of dial indicator pressure plates 41 installed on the top of said dial indicator fixed bracket 3, and dial indicator connection is installed in two said dial indicator pressure plates 41 Rod 42, one end of the dial indicator connecting rod 42 is provided with a rotating ball head 43 that is rotatably installed between the two dial indicator pressure plates 41, and the other end of the dial indicator connecting rod 42 is installed with the dial indicator sub-table 2. Two coaxial bearings are installed on the end of the base 1 away from the fixed bracket 3 of the dial indicator, and the bearings are installed in the bearing holes 5 as shown in Fig. 1 and Fig. 2 .

When using, first assemble the product, then put the product into the bearing, then align the contact needle of dial indicator 2 with the product under test, turn the product gently by hand, and then observe the reading on the meter, what is the changed value, So what is the variation of coaxiality. The specific operation process is as follows: put the high-precision coaxiality detector on the working platform; swing the dial gauge 2 to the left, and the contact needle of the meter is away from the vertical direction of the bearing; Turn; turn the instrument in the opposite direction until the contact needle is pressed against the cylindrical surface of the product to be tested, until the reading on the meter is about 1/4 of the table; turn the product counterclockwise by hand for a circle, and watch the reading change of the meter at the same time. That is the coaxiality. The utility model has the advantages of simple and portable structure, easy portability, simple and clear operation, wide range of tested products, fast measuring speed and high measuring precision.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. High-precision coaxiality detector, it is characterized in that: comprise base, on described base vertically be provided with dial indicator fixing support, the top of described dial indicator fixing support is equipped with dial indicator rotating supporting device, described A dial indicator is installed on the dial indicator rotating support device; two coaxial bearings are installed on the end of the base away from the dial indicator fixing bracket. 2. The high-precision coaxiality detector according to claim 1, characterized in that: the rotary support device for the dial indicator comprises a pair of dial gauge pressure plates mounted on the top of the dial gauge fixed bracket, two A dial indicator connecting rod is installed in the said dial indicator pressing plate, and one end of said dial indicator connecting rod is provided with a rotating ball head which is rotatably installed between two said dial indicator pressing plates, and said dial indicator is connected The other end of the rod mounts the dial indicator.