CN209197653U - A high-precision curvature measuring instrument for flatness measurement of small planes - Google Patents

Abstract

The utility model discloses a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness, including measuring instrument dial framework, the amesdial being fixedly mounted in the middle part of measuring instrument dial framework and two measuring claws being slidably mounted on measuring instrument dial framework, two measuring claws are laid in the two sides of amesdial respectively and the measuring staff of itself and amesdial is parallel to each other, and the both ends of measuring instrument dial framework are provided with the microspindle being finely adjusted to the position of measuring claw.The utility model structure is simple, it is convenient to operate, a measuring claw is respectively set by the two sides in amesdial, and measuring claw is slidably mounted on measuring instrument dial framework, it can be adapted for the measurement demand of Different Plane radius of curvature, it is applied widely, while measurement accuracy can be effectively improved, reduce the difficulty of processing of measuring device.

Description

A high-precision curvature measuring instrument for flatness measurement of small planes

technical field

The utility model belongs to the technical field of product detection devices, and in particular relates to a high-precision curvature measuring instrument used for measuring the flatness of small planes.

Background technique

Flatness refers to the amount of variation between the measured actual surface and its ideal plane, and the flatness error is the comparison between the measured actual surface and the ideal plane. Based on "GB 17352-2010 Performance and Installation Requirements for Motorcycle and Moped Rearview Mirrors", the measurement method also stipulates that the curvature radius measuring instrument must be used for measurement. In the standard, the curvature radius measuring instrument is only A schematic introduction is made, but due to the great difficulty in its processing technology, the measuring instruments imitating its design often fail to meet the requirements in actual use.

Most of the existing flatness measuring instruments for motorcycle and moped rearview mirrors have problems such as insufficient measurement accuracy, large measurement limitations, and the ridgeline at the tip of the fixed measuring column is relatively easy to be damaged, and the ridgeline at the tip of the fixed measuring column maintenance is very difficult.

Utility model content

The technical problem to be solved by the utility model is to provide a high-precision curvature measuring instrument for flatness measurement of small planes in view of the deficiencies in the above-mentioned prior art, which has a simple structure and convenient operation. One measuring jaw is set respectively, and the measuring jaw is slidably installed on the measuring instrument frame, which can be applied to the measurement requirements of different plane curvature radii, and has a wide range of applications. At the same time, it can effectively improve the measurement accuracy and reduce the processing difficulty of the measuring device.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a high-precision curvature measuring instrument used for measuring the flatness of small planes, which is characterized in that it includes a measuring instrument frame, and a micrometer fixedly installed in the middle of the measuring instrument frame meter, and two measuring claws slidingly installed on the measuring instrument frame, the two measuring claws are respectively arranged on both sides of the dial gauge and parallel to the measuring rod of the dial gauge, the two measuring claws of the measuring instrument frame Both ends are equipped with a micrometer screw for fine-tuning the position of the measuring claw.

The above-mentioned high-precision curvature measuring instrument for measuring the flatness of small planes is characterized in that: both sides of the measuring instrument frame are provided with guide grooves for guiding the measuring claws, and the guide grooves are arranged along the measuring instrument frame. opened in the length direction.

The above-mentioned high-precision curvature measuring instrument for measuring the flatness of small planes is characterized in that: a spring is arranged in the guide groove along the length direction of the measuring instrument frame, and one end of the spring is fixed on the guide groove close to On the groove wall on the side of the meter.

The above-mentioned high-precision curvature measuring instrument for measuring the flatness of small planes is characterized in that: the measuring claw is located between the spring and the fine-tuning micrometer screw.

The above-mentioned high-precision curvature measuring instrument for small plane flatness measurement is characterized in that: the middle part of the measuring instrument frame is provided with a circular mounting hole for the installation of the dial gauge, and the measuring rod of the dial gauge After passing through the circular installation hole from top to bottom, it protrudes to the bottom of the measuring instrument frame.

The above-mentioned high-precision curvature measuring instrument for measuring the flatness of small planes is characterized in that: the measuring claws are provided with positioning screws.

The above-mentioned high-precision curvature measuring instrument for small plane flatness measurement is characterized in that: the measuring jaw includes a sliding assembly and a measuring column, and the upper part of the sliding assembly is provided with a circular hole for positioning screws to install. through holes, and the set screws are pressed on the measuring instrument frame after passing through the circular through holes.

The above-mentioned high-precision curvature measuring instrument for measuring the flatness of small planes is characterized in that: the measuring column is arranged in parallel with the measuring rod of the dial indicator.

Compared with the prior art, the utility model has the following advantages:

1. The utility model has simple structure and convenient operation. By installing the dial gauge on the measuring instrument frame and arranging two measuring claws on the left and right sides of the dial gauge respectively, when measuring the curvature, the two The tips of the measuring columns of each measuring claw are placed vertically on the plane to be measured, and the measured value of the radius of curvature of the plane to be measured can be obtained by reading the value on the dial indicator.

2. The utility model slides and installs the two measuring claws on the measuring instrument frame, which is convenient for adjusting the center distance between the measuring claws and the measuring rod of the dial indicator, so as to meet the measurement requirements of different plane curvature radii, and the scope of application widely.

3. The utility model is equipped with a micrometer screw for fine-tuning the position of the measuring claw at both ends of the measuring instrument frame, so that the center distance between the measuring claw and the measuring rod of the dial indicator can be fine-tuned by 0.001 mm, It avoids the accumulated error after combining the single parts of the combined type, relaxes the tolerance of manufacturing and processing, and reduces the difficulty of processing while improving the measurement accuracy.

To sum up, the utility model has a simple structure and convenient operation. By setting a measuring claw on both sides of the dial indicator and slidingly installing the measuring claw on the measuring instrument frame, it can be applied to the measurement requirements of different plane curvature radii. , has a wide range of applications, and can effectively improve the measurement accuracy and reduce the processing difficulty of the measurement device.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

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

Fig. 2 is a sectional view along A-A of Fig. 1 .

Explanation of reference signs:

1—Measuring instrument frame; 1-1—Guide groove; 2—Dial indicator;

3—Measuring claw; 3-1—Sliding assembly; 3-2—Measuring column;

4—set screw; 5—spring; 6—thousand screw.

Detailed ways

As shown in Figure 1, the utility model includes a measuring instrument frame 1, a dial gauge 2 fixedly installed in the middle of the measuring instrument frame 1, and two measuring claws 3 slidingly installed on the measuring instrument frame 1, the two measuring The claws 3 are respectively arranged on both sides of the dial gauge 2 and are parallel to the measuring rod of the dial gauge 2. Both ends of the measuring instrument frame 1 are provided with a dial screw 6 for fine-tuning the position of the measuring claws 3. .

In actual use, by installing the dial gauge 2 on the measuring instrument frame 1, and arranging the two measuring claws 3 on both sides of the dial gauge 2 respectively, when performing curvature measurement, the measuring columns of the two measuring claws 3 The 3-2 tips are placed vertically on the plane to be measured, and the measured value of the radius of curvature of the plane to be measured can be obtained by reading the value on the dial indicator 2, which is convenient to operate.

It should be noted that by slidingly installing the two measuring claws 3 on the measuring instrument frame 1, it is convenient to adjust the center distance between the measuring claws 3 and the measuring rod of the dial gauge 2, so as to be suitable for different plane curvature radii Measurement requirements, a wide range of applications.

In particular, the two ends of the measuring instrument frame 1 are provided with a micrometer screw 6 for fine-tuning the position of the measuring claw 3, so that the center distance between the measuring claw 3 and the measuring rod of the dial gauge 2 can be adjusted by 0.001 mm. Fine-tuning avoids the accumulated error after the combination of individual parts of the combined type, relaxes the tolerance of manufacturing and processing, and reduces the difficulty of processing while improving the measurement accuracy.

In this embodiment, both sides of the measuring instrument frame 1 are provided with guide grooves 1 - 1 for guiding the measuring claws 3 , and the guide grooves 1 - 1 are opened along the length direction of the measuring instrument frame 1 .

In actual use, the two guide grooves 1-1 are symmetrically arranged on both sides of the measuring instrument frame 1, and the guide grooves 1-1 connect the upper end surface of the measuring instrument frame 1 with the lower end surface of the measuring instrument frame 1, so as to facilitate For the sliding installation of the measuring claw 3, the guide groove 1-1 is formed by interpenetrating the upper rectangular groove, the middle circular groove and the lower rectangular groove.

It should be noted that the measuring claw 3 fits with the guide groove 1-1, and since the middle part of the guide groove 1-1 is cylindrical, the force of the measuring claw 3 can be balanced when adjusting the position, ensuring that it is compatible with the measuring instrument frame 1. The tight assembly can reduce sliding friction and ensure the smoothness of adjustment.

In this embodiment, a spring 5 is arranged in the guide groove 1-1 along the length direction of the measuring instrument frame 1, and one end of the spring 5 is fixed on the guide groove 1-1 close to the groove wall on the side of the dial gauge 2. superior.

In this embodiment, the measuring claw 3 is located between the spring 5 and the micrometer screw 6 .

In actual use, by setting the spring 5 in the guide groove 1-1, the measuring claw 3 can be located between the spring 5 and the micrometer screw 6, which is convenient for adjusting the position of the measuring claw 3 and improving the measurement accuracy.

It should be noted that when using the dial indicator screw 6 to adjust the position of the measuring jaw 3, when it is necessary to increase the center distance between the measuring jaw 3 and the measuring rod of the dial gauge 2, the dial indicator screw 6 is rotated, Make the spring 5 stretch, and then push the measuring claw 3 to move towards the end of the measuring instrument frame 1 along with the dial indicator screw 6, when it is necessary to reduce the center distance between the measuring claw 3 and the measuring rod of the dial gauge 2, Rotating the micrometer screw 6 makes it push the measuring jaw 3 to move towards the center of the measuring instrument frame 1, and at the same time the spring 5 shrinks, which has a buffering effect on the measuring jaw 3 and prevents the measuring jaw 3 from moving too much.

In this embodiment, the middle part of the measuring instrument frame 1 is provided with a circular mounting hole for the installation of the dial gauge 2, and the measuring rod of the dial gauge 2 extends through the circular mounting hole from top to bottom. Out to the bottom of the measuring instrument frame 1.

In actual use, the dial gauge 2 is detachably installed on the measuring instrument frame 1, and when the reading on the dial gauge 2 is zero, the measurement between the tip of the corresponding measuring rod and the two measuring jaws 3 The tips of the columns 3-2 are located on the same straight line.

In this embodiment, the measuring claw 3 is provided with a positioning screw 4 .

In actual use, by setting the positioning screw 4 on the measuring claw 3, it can be ensured that the measuring claw 3 is fixed tightly with the measuring instrument frame 1 after sliding to the designated position, so as to prevent the measuring claw 3 from being damaged during the measurement process and cause the measurement structure to be incorrect. reliable.

In this embodiment, the measuring jaw 3 includes a sliding assembly 3-1 and a measuring column 3-2, the upper part of the sliding assembly 3-1 is provided with a circular through hole for the positioning screw 4 to be installed, and the positioning The screw 4 is pressed on the measuring instrument frame 1 after passing through the circular through hole.

As shown in Figure 2, in actual use, the sliding assembly 3-1 includes two balance weights respectively arranged on the upper and lower sides of the measuring instrument frame 1 and a slider arranged in the guide groove 1-1, so The sliding part cooperates with the guide groove 1-1, and the two ends of the sliding part are respectively fixedly connected with two balance weights.

It should be noted that one side of a balance weight located on the upper side of the sliding assembly 3-1 is provided with a threaded hole for the installation of the positioning screw 4, and the positioning screw 4 passes through the thread from top to bottom. The back of the hole is tightly pressed against the upper end surface of the measuring instrument frame 1, so that the measuring claw 3 is fixed on the corresponding position of the measuring instrument frame 1.

When the utility model is in use, adjust the measuring claw 3 to the corresponding position according to the corresponding curvature radius value, and use the micrometer screw 6 for fine-tuning to increase the measurement accuracy, and use the positioning screw 4 to fix the measuring claw 3 on the measuring instrument On the frame 1, make the tips of the measuring columns 3-2 of the two measuring claws 3 all be on the plane to be measured, and at the same time make the measuring columns 3-2 perpendicular to the plane to be measured, and the reading displayed on the dial indicator 2 is the value to be measured. Measures the radius of curvature measurement of a plane.

In this embodiment, the measuring column 3-2 is arranged parallel to the measuring rod of the dial indicator 2 .

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (8)

1. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness, it is characterised in that: including measuring instrument dial framework (1), the amesdial (2) being fixedly mounted in the middle part of measuring instrument dial framework (1) and two are slidably mounted on measuring instrument dial framework (1) Measuring claw (3), two measuring claws (3) are laid in the two sides of amesdial (2) and the measuring staff phase of itself and amesdial (2) respectively Mutually parallel, the both ends of the measuring instrument dial framework (1) are provided with the microspindle (6) being finely adjusted to the position of measuring claw (3).

2. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness described in accordance with the claim 1, feature exist In: the two sides of the measuring instrument dial framework (1) offer the guide groove (1-1) being oriented to measuring claw (3), the guide groove The length direction of (1-1) along measuring instrument dial framework (1) opens up.

3. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness, feature exist according to claim 2 In: the length direction in the guide groove (1-1) along measuring instrument dial framework (1) is provided with spring (5), one end of the spring (5) It is fixed on guide groove (1-1) on the cell wall of amesdial (2) side.

4. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness described in accordance with the claim 3, feature exist In: the measuring claw (3) is located between spring (5) and microspindle (6).

5. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness described in accordance with the claim 1, feature exist In: the circular mounting hole for amesdial (2) installation, the survey of the amesdial (2) are offered in the middle part of the measuring instrument dial framework (1) Bar from top to bottom passes through the lower section that measuring instrument dial framework (1) is extend out to after the circular mounting hole.

6. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness according to claim 1 or 2, feature It is: is provided with positioning screw (4) on the measuring claw (3).

7. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness, feature exist according to claim 6 In: the measuring claw (3) includes slidable fit body (3-1) and measurement column (3-2), and the top of the slidable fit body (3-1) is opened Equipped with the circular through hole installed for positioning screw (4), the positioning screw (4) is pressed on measuring instrument after passing through the circular through hole On dial framework (1).

8. a kind of high-precision measuring apparatus of arbitrary shape for the facet measurement of planeness, feature exist according to claim 7 In: the measurement column (3-2) is laid with the measuring staff of amesdial (2) in parallel.