CN108709481A - Caliper capable of immediately reading inner diameter deviation and measuring method of inner diameter deviation - Google Patents

Abstract

The invention discloses a caliper capable of immediately reading the inner diameter deviation and a measuring method for the inner diameter deviation, comprising a dial gauge, a fixed clip and a caliper body, the dial gauge is fixed to two caliper body caliper body through the fixed clip Between the feet, the dial gauge is used to measure the displacement between the two pincer feet at the position of the dial gauge. The caliper of the present invention can measure the position change of the pincer foot where it is located, that is, the displacement, and then convert the actual deviation between the end of the pincer foot and the standard distance; the caliper of the present invention is simple in structure, low in cost, and easy to operate. The measuring method of the present invention is not only a good way to measure inner diameter deviation and inner diameter when there is a lack of precise inner diameter measuring tools.

Description

A caliper capable of immediate reading of inner diameter deviation and a method of measuring inner diameter deviation

technical field

The invention relates to a caliper capable of immediately reading the deviation of the inner diameter and a measuring method for the deviation of the inner diameter, belonging to the technical field of measuring rulers.

Background technique

Bore calipers are the simplest comparison gage. Inside diameter calipers are used to measure inside diameters and grooves. It cannot directly read the measurement results, but reads the measured length dimension (diameter also belongs to the length dimension) on the steel ruler, or first removes the required size on the steel ruler, and then checks whether the diameter of the part is meets the. Common bore calipers cannot immediately read the bore size and deviation.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a caliper that can immediately read the inner diameter deviation and a measuring method for the inner diameter deviation, so that the inner diameter deviation and the inner diameter size can be directly read.

In order to solve the above technical problems, the technical solution of the present invention is: a caliper that can immediately read the inner diameter deviation, including a dial gauge, a fixed clip and a caliper body, and the dial gauge is fixed on the caliper body through the fixed clip Between the two pincers, the dial gauge is used to measure the displacement between the two pincers at the position where the dial gauge is located.

Further, the dial indicator has a measuring rod, the front end of which is a measuring head, and the straight line where the measuring rod is located is parallel to the line connecting the two pincer legs of the caliper body.

Further, the dial gauge is fixed at the center point of the caliper feet of the caliper body.

Further, the caliper body is a spring caliper.

The present invention also provides a method for measuring the inner diameter deviation, using the caliper that can immediately read the inner diameter deviation for measurement, the steps are as follows:

Step S1, adjust the two pincers of the caliper body to a standard distance, and then adjust the dial indicator to zero;

Step S2, putting the caliper body into the hole or groove to be measured;

Step S3, adjust the dial gauge so that the pincers of the caliper body just fit the hole wall or side wall to be measured, and read the dial gauge reading;

Step S4, according to the position of the dial gauge on the pincer pin, the actual deviation of the end of the pincer pin is converted, that is, the actual deviation between the inner diameter and the standard distance.

Further, the dial gauge is located at the center point of the pincers, so that the actual deviation between the inner diameter and the standard distance is twice the reading of the dial gauge.

By adopting the above technical scheme, the present invention has the following beneficial effects:

The caliper of the present invention can measure the position change of the pincer foot where it is located, that is, the displacement, and then convert the actual deviation between the end of the pincer foot and the standard distance; the caliper of the present invention is simple in structure, low in cost, and easy to operate. This measurement method of the present invention is not only a good way to measure the inner diameter deviation and inner diameter when there is a lack of precise inner diameter measuring tools, but also, for the inner diameter of a certain part, it is difficult to use a precise inner diameter measurement because there is a shaft in its hole , the application of the caliper and the measuring method of the present invention can immediately read the inner diameter deviation, and can quickly solve the problem.

Description of drawings

Fig. 1 is a schematic structural diagram of a caliper capable of immediately reading the inner diameter deviation of the present invention.

Detailed ways

In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one.

As shown in Figure 1, a caliper that can immediately read the inner diameter deviation includes a dial gauge 1, a fixed clip 2 and a caliper body 3, and the dial gauge 1 is fixed on both sides of the caliper body 3 through the fixed clip 2. Between the pincer pins 3-1, the dial indicator 1 is used to measure the displacement between the pincer pins 3-1 at the position of the dial indicator, that is, the position change between the pincer pins 3-1. The displacement between the two pincers here is measured by the dial indicator 1, and the deviation between the inner diameter and the standard distance can be converted by this displacement.

Preferably, the dial indicator 1 has a measuring rod 1-1, the front end of the measuring rod 1-1 is a measuring head, and the line where the measuring rod 1-1 is located is parallel to the line connecting the two pincer feet 3-1 of the caliper body 3 .

Preferably, in order to facilitate the conversion of the actual deviation between the inner diameter and the standard distance, the dial indicator 1 is fixed at the center point of the pincer foot 3-1 of the caliper body 3. According to a similar principle, the displacement of the end of the pincer foot is 1,000 points Twice the displacement change where the gauge is located, that is, the displacement change at the end of the clamp foot is twice the reading of the dial gauge.

Optionally, the caliper body 3 is a spring caliper.

On the basis of the above-mentioned caliper that can immediately read the inner diameter deviation, a method for measuring the inner diameter deviation, using the described caliper that can immediately read the inner diameter deviation for measurement, the steps are as follows:

Step S1, adjust the two pincer feet 3-1 of the caliper body 3 to a standard distance, and then adjust the dial gauge 1 to zero;

Step S2, putting the caliper body 3 into the hole or groove whose inner diameter is to be measured;

Step S3, adjusting the dial gauge 1 so that the clamp feet 3-1 of the caliper body 3 just fit the hole wall or side wall to be measured, and read the reading of the dial gauge 1;

Step S4, according to the position of the dial indicator 1 on the pincer foot 3-1, the actual deviation of the end of the pincer pin is converted, that is, the actual deviation between the inner diameter and the standard distance.

The dial gauge 1 is located at the center point of the pincer 3-1, so that the actual deviation between the inner diameter and the standard distance is twice the reading of the dial gauge, so as to facilitate the conversion of the actual deviation. The actual inner diameter can be further calculated according to the actual deviation.

Now provide a specific example of measuring inner diameter deviation, as follows:

If a batch of parts with an inner diameter of about 17mm is to be measured, first adjust the distance between the ends of the two pincer feet 3-1 of the caliper body 3 to 17.00mm with an outer diameter micrometer caliper, and then adjust the dial indicator to zero and extend it into the inner hole Or in the groove, adjust the distance between the two pliers feet 3-1, so that the two pliers feet fit the hole wall, and the tightness is suitable, and the deviation of the inner hole or the deviation of the width of the groove is read. Because the ends of the two pliers feet 3-1 are different from the position of the dial indicator, there is a multiple of enlargement and reduction. During production, the magnification is generally set at 2, that is, the dial gauge is located at the center of the pincers. If the reading of the dial gauge is +0.035, the deviation is 0.07mm, and the inner diameter is 17.07mm.

The caliper of the present invention is simple in structure, low in cost, and easy to operate. The measuring method of the present invention is not only a good way to measure the inner diameter when there is a lack of precise inner diameter measuring tools, but also, for the inner diameter of a certain part, due to its inner diameter There is a shaft, and it is difficult to use a precise inner diameter measurement. The application of the caliper and the measuring method of the present invention can immediately read the inner diameter deviation, and can quickly solve the problem.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (6)

1. a kind of clamp immediately reading out inner diameter deviation, it is characterised in that：Including amesdial (1), fixing clamp (2) and clamp Ontology (3), it is described between the amesdial (1) is fixed on two of caliper body (3) pincers feet (3-1) by fixing clamp (2) Amesdial (1) is used to measure the displacement between two pincers feet (3-1) of amesdial position.

2. the clamp according to claim 1 for immediately reading out inner diameter deviation, it is characterised in that：Amesdial (1) tool There is a measuring rod (1-1), the front end of measuring rod (1-1) is gauge head, two of straight line where measuring rod (1-1) and caliper body (3) The line for clamping foot (3-1) is parallel.

3. the clamp according to claim 1 for immediately reading out inner diameter deviation, it is characterised in that：The amesdial (1) is solid It is scheduled on the center of the pincers foot (3-1) of caliper body (3).

4. the clamp according to claim 1 for immediately reading out inner diameter deviation, it is characterised in that：The caliper body (3) For spring caliper.

5. a kind of measurement method of inner diameter deviation, it is characterised in that：It can be immediately using such as Claims 1-4 any one of them The clamp for reading inner diameter deviation measure, and steps are as follows：

Two pincers feet (3-1) of caliper body (3) are adjusted to gauged distance, then amesdial (1) return to zero by step S1；

Caliper body (3) is put into hole to be measured or groove by step S2；

Step S3, adjusting amesdial (1) makes the pincers foot (3-1) of caliper body (3) just be bonded hole wall or side wall to be measured, and Amesdial (1) is read to read；

Step S4 converses the actual deviation in pincers foot portion, as internal diameter according to position of the amesdial (1) on pincers foot (3-1) With the actual deviation of gauged distance.

6. the measurement method of inner diameter deviation according to claim 5, it is characterised in that：The amesdial (1) is located at pincers foot The center of (3-1), so that the actual deviation of internal diameter and gauged distance is twice of amesdial reading.