CN201463808U - Measuring device for fine boring big stop - Google Patents

Abstract

The utility model relates to a measuring device for large precisely-bored spigots, which comprises a body and a dial indicator, wherein a detection lever hinged with the body is arranged at the front part of the body, an outward detection contact is arranged at the lower end of the detection lever, the inner side of the upper end of the detection lever is in contact with the outer end of a detection rod of the dial indicator, a vertical lever through hole is formed at the front part of the body, the detection lever passes through the lever through hole and is hinged with the body in a manner that a hinge through hole is formed at the middle part of the detection lever and is matched with a lever shaft intermittently, and the lever shaft is in screwed connection on the side wall of the lever through hole. The utility model has simple structure and convenient operation, and is capable of accurately measuring the diameter of a large spigot with large diameter and small depth, thereby ensuring the processing quality.

Description

Measuring device for fine boring big stop

technical field

The utility model relates to a measuring device for fine boring and large stop, which belongs to the field of measuring tools.

Background technique

At present, conventional internal and external diameter micrometers are generally used to measure the joints of medium and small sizes and low matching precision requirements. For some bodies with large diameters, small depths, and high connection accuracy requirements, conventional measuring tools are used. Due to the limitations of the structure and precision and the detection errors of the testing personnel, the accuracy of the measurement cannot be guaranteed.

Utility model content

In order to solve the above-mentioned defects of the prior art, the utility model provides a measuring device for fine boring large seam, the measuring device is simple in structure, easy to operate, and can accurately measure the diameter of the large diameter and small depth of the large seam of the machine body size.

The technical solution adopted by the utility model: a measuring device for fine boring and large stop, including a body and a dial indicator, the front part of the body is provided with a detection lever hinged with the body, and the lower end of the detection lever is provided There is an outward-facing detection contact, and the inner side of the upper end of the detection lever is in contact with the outer end of the detection rod of the dial indicator.

The front part of the body can be provided with a vertical lever through hole, and the detection lever passes through the lever through hole. The hinged through hole is intermittently matched with the lever shaft, and the lever shaft is screwed on the side wall of the lever through hole.

The detection lever can be provided with a leaf spring that presses its upper end to the dial indicator measuring tool, one end of the leaf spring is fixed on the upper surface of the body, and the other end is pressed against the outer side of the upper end of the lever.

The leaf spring is a spring with a measured force of at least 1.98N.

The dial gauge can be fixed on the upper surface of the body through a dial frame provided on the body.

The rear part of the body can also be provided with a positioning stop pin.

Due to the use of the lever principle, the deviation data between the diameter of the large stop of the body to be tested and the reference size of the large stop diameter of the standard part can be accurately measured through the introduction of the detection lever, and then compared with the reference size of the large stop diameter of the standard part. The precise size of the diameter of the large stop of the body to be measured can be obtained. The utility model has the advantages of simple structure, convenient operation, low manufacturing cost, can eliminate human errors, and has high detection accuracy, completely solving the problem that conventional measuring tools cannot meet the large diameter and small depth of the large stop. Defects in the measurement of the mouth.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Fig. 1, a kind of measuring device of fine boring big stop, comprises body 1 and dial indicator 6, the front part of described body is provided with the detection lever 2 that is hinged with described body, and the lower end of described detection lever An outward-facing detection contact is provided, and the inside of the upper end of the detection lever is in contact with the outer end of the detection rod of the dial indicator. The front part of the body may be provided with a vertical lever through hole, and the detection lever Passing through the lever through hole, the way it is hinged with the body is that the middle part of the detection lever is provided with a hinged through hole, and the hinged through hole is intermittently matched with the lever shaft 3, and the lever shaft is screwed on the On the side wall of the through hole of the lever. According to the difference in the diameter of the large stop of the measuring body, the detection lever can make a corresponding rotation offset through the detection lever shaft. In order to make the rotation offset of the detection lever more convenient and Accurately displayed by the dial indicator, the part where the detection lever is screwed to the detection lever shaft is located in the middle of the detection lever.

The detection lever can be provided with a leaf spring 5 that presses its upper end to the dial indicator measuring tool, one end of the leaf spring is fixed on the upper surface of the body, and the other end is pressed against the outer side of the upper end of the lever. It is used to provide external force for the reset of the detection lever and ensure that the detection lever is in close contact with the inner wall or outer wall of the large stop of the body to be tested. In order to ensure the return movement of the detection lever, a leaf spring with a force measurement of at least 1.98N is usually used.

The dial gauge can be fixed on the upper surface of the body through the dial frame 7 arranged on the body. When measuring the diameter of the large stop of the machine body, the detection lever rotates and deviates, and pushes the dial indicator detection rod in contact with it, so that the dial indicator indicates the rotation deviation of the detection lever.

Before measuring the diameter of the large stop of the body to be tested, first install the left gauge block 9 and the right gauge block 10 on the base 8 of the standard part, fix them by the clamping device according to the standard size, and contact the detection contact at the lower end of the detection lever to the The inner side of the left gauge block, the rear part of the body can also be provided with a positioning stop pin 4, the stop pin is in contact with the inside of the right gauge block, and the detection contact of the lever and the positioning stop pin are used to locate the body to be tested. notch, adjust the dial indicator so that the pointer of the dial indicator indicates the zero position. Then measure the diameter of the large seam of the body to be tested with the measuring fixture (excluding the standard part base and the left and right gauge blocks), and contact the inner wall of the large seam of the body to be tested by the detection contact and the retaining pin. Multiple measurements record the rotation deviation value of the detection lever displayed on the dial indicator, and compare the maximum value with the upper and lower limits of the hands offset set according to the actual situation. If the deviation is within the upper and lower limits, the diameter of the large stop of the machine body is qualified, otherwise it is unqualified.

The accurate value of the diameter of the large stop of the body to be tested can be obtained by mathematically calculating the maximum rotational deviation value and the standard size.

Claims (6)

1. A measuring device for fine boring large stop, characterized in that it comprises a body and a dial indicator, the front portion of the body is provided with a detection lever hinged with the body, and the lower end of the detection lever is provided with an outwardly facing The detection contact, the inner side of the upper end of the detection lever is in contact with the outer end of the detection rod of the dial indicator. 2. The measuring device for fine boring large stop according to claim 1, characterized in that the front part of the body is provided with a vertical lever through hole, and the detection lever passes through the lever through hole, and it is connected with the lever through hole. The hinged way of the body is that the middle part of the detection lever is provided with a hinged through hole, and the hinged through hole is intermittently matched with the lever shaft, and the lever shaft is screwed on the side wall of the lever through hole. 3. The measuring device for fine boring large stop as claimed in claim 2, characterized in that the detection lever is provided with a leaf spring that presses its upper end to the dial indicator measuring tool, and one end of the leaf spring is fixed on The other end of the upper surface of the body presses against the outer side of the upper end of the lever. 4. The measuring device for fine boring large stop according to claim 3, characterized in that said leaf spring is a spring with a measuring force of at least 1.96N. 5. The measuring device for fine boring large stop according to claim 1, characterized in that the dial gauge is fixed on the upper surface of the body through a gauge frame provided on the body. 6. The measuring device for fine boring large stop according to claim 1, 2, 3, 4 or 5, characterized in that the rear part of the body is also provided with a positioning stop pin.

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