CN204831167U - Measurement device for whole curved surface of thing is leveled in accurate measurement - Google Patents

Abstract

A measuring device for accurately measuring the overall curved surface of a flat object, which includes a pillar with a level, and a main ruler with a guide rail is connected transversely to the pillar, and a measuring device that can move horizontally along the main ruler straight line is installed on the guide rail An electronic dial gauge, and the electronic dial gauge is connected with a computer that can automatically input measurement data through a data line; the guide rail has a sub-scale that can accurately control the distance between the measurement points; the main scale is connected through a bearing It is connected to the pillar and can be rotated relative to the pillar. There is a bracket for adjusting the level at the bottom of the pillar, and the top is equipped with a level that can ensure that the electronic dial gauge can move horizontally along the main ruler; the beneficial effect of the utility model is that : Avoid high equipment cost but can meet the requirement of 0.001mm accuracy; and the measurement method is easy to operate and the instrument is easy to carry.

Description

A measuring device for accurately measuring the overall curved surface of a flat object

technical field

The utility model relates to a measuring device and a measuring method for accurately measuring the overall curved surface of a flat object. The measuring method has an accuracy range of 0.001mm-25mm, and is suitable for objects with high precision requirements and a small surface area range (generally not greater than 0.25m ^{2 )} . ) measurement of the overall surface of the object surface.

Background technique

At present, the geometric measurement of the surface of the object generally adopts a three-coordinate measuring instrument, which refers to a detector that can move in three directions and can move on three mutually perpendicular guide rails. The detector uses contact or non-contact Signals are transmitted by means of contact, etc. The three-axis displacement measurement system calculates the coordinates (X, Y, Z) of each point of the workpiece through the data processor and the instrument for various functional measurements. Within the three-dimensional measurable space, it is an instrument that can calculate various geometric shapes, dimensions and other measurement capabilities through the three-coordinate software system according to the point data returned by the probe system. The three-coordinate measuring instrument has the advantages of strong mechanical structure rigidity, small geometric error, high precision and high stability, but its disadvantage is that it is expensive.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a simple structure, easy to use and operate, high precision, good reliability and accurate measurement of the overall curved surface of the flat object and the measurement method, which avoids high It has a certain degree of accuracy and operability while reducing the equipment cost.

The technical solution adopted by the utility model is: a measuring device for accurately measuring the overall curved surface of a flat object, which includes a pillar with a level gauge, and a main ruler with a guide rail is horizontally connected to the pillar, and the guide rail is equipped with The electronic dial gauge can be moved horizontally along the main ruler straight line, and the electronic dial gauge is connected with a computer that can automatically input measurement data through a data line.

The guide rail has a sub-scale that can accurately control the distance between the measurement points; the main scale is connected to the pillar through a bearing and can rotate relative to the pillar, and there is a bracket at the bottom of the pillar for adjusting the level. A spirit level is installed on the top to ensure that the electronic dial indicator can move horizontally along the main scale.

The level at the top of the pillar is a level with scales on the X and Y axes; the pillar is provided with an overall height adjustable mechanism; the bearing is rotatable and has a scale, which can drive the main ruler to take the pillar as the axis. Fixed-angle rotation, and provide accurate coordinates for subsequent surface simulation;

The support at the bottom of the pillar is in contact with the surface of the measuring object and kept horizontal, and the plane defined by the support takes the center of the circle of the cross-section of the pillar as the reference point, so that the connection line between the measuring head of the electronic dial indicator and the center of the circle is parallel to the electronic dial indicator. Direction of watch movement.

Compared with the prior art, the beneficial effect of the utility model is that: high equipment cost can be avoided but the precision requirement of 0.001 mm can be met; the measurement method is simple to operate, and the instrument is convenient to carry.

Description of drawings

Fig. 1 is a schematic diagram of a measuring device for accurately measuring the overall curved surface of a flat object described in the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. As shown in Fig. 1, a kind of measuring device for accurately measuring the overall curved surface of a flat object described in the utility model includes a pillar 2 with a level, and a main ruler 9 with a guide rail 7 is transversely connected to the pillar 2. An electronic dial indicator 6 that can move horizontally along the main scale straight line for measurement is installed on the guide rail 7, and the electronic dial indicator 6 is connected with a computer 8 that can automatically input measurement data through a data line 5.

As shown in the figure, the guide rail 7 has a sub-scale that can accurately control the distance between the measuring points; the main scale is connected to the pillar through the bearing 3 and can rotate relative to the pillar. The support 4 in order to adjust the level is equipped with a spirit level that can ensure that the electronic dial indicator can move horizontally along the main ruler.

The level meter 1 at the top of the pillar described in the utility model is a level meter with scales on the X and Y axes; the pillar 2 is provided with an overall height adjustable mechanism; the bearing 3 is rotatable and has a scale, which can drive the main The ruler rotates at a fixed angle with the pillar as the axis, and provides accurate coordinates for subsequent surface simulation;

The bracket 4 at the bottom of the pillar is in contact with the surface of the measuring object and kept horizontal, and the plane defined by the bracket takes the center of the circle of the cross section of the pillar as a reference point, so that the connection line between the probe of the electronic dial gauge and the center of the circle is parallel to the electronic dial gauge. Direction of sub-table movement.

A measuring method using the measuring device for accurately measuring the overall curved surface of a flat object, the measuring method comprising the following steps:

a) Place the pillar 2 on the surface of the object to be measured. If fan-shaped measurement is selected, place the pillar 2 on a corner of the object to be measured;

b) Adjust the support 4 in combination with the spirit level 1 at the top of the pillar to make the whole level;

c) Determine the form of data recording and the distance between measurement points. Taking automatic recording as an example, after connecting the electronic dial indicator 6 to the computer 8, open the software, perform measurement, and manually or directly see through the computer for the reference value obtained from the measurement. The over-measured dial indicator directly grabs the value;

d) The electronic dial indicator takes the main scale 9 as the axis, and measures from left to right, combined with the auxiliary scale 7 to move the accurate distance; rotate the main scale through the bearing 3 to a certain angle, repeat the previous measurement steps, and finally The measured data can present the surface condition of the measured object through packaged software that can present three-dimensional graphics or self-developed software.

The specific implementation of the utility model has been described above in conjunction with the accompanying drawings, but these descriptions cannot be interpreted as limiting the scope of the utility model, and the protection scope of the utility model is defined by the appended claims. Changes based on the claims are all within the protection scope of the present utility model.

Claims (4)

1. A measuring device for accurately measuring the overall curved surface of a flat object, which includes a pillar with a level, and a main ruler with a guide rail is transversely connected to the pillar, and it is characterized in that the guide rail is equipped with a device that can move along the main ruler. An electronic dial gauge for linear and horizontal movement measurement, and the electronic dial gauge (6) is connected with a computer (8) capable of automatically inputting measurement data through a data line (5). 2. The measuring device for accurately measuring the overall curved surface of a flat object according to claim 1, characterized in that the guide rail (7) has an auxiliary scale that can accurately control the distance between the measurement points; the main scale passes through the bearing (3) It is connected to the pillar and can be rotated relative to the pillar. There is a bracket (4) at the bottom of the pillar to adjust the level, and a level is installed on the top to ensure that the electronic dial indicator can move horizontally along the main scale. 3. The measuring device for accurately measuring the overall curved surface of a flat object according to claim 2, characterized in that the level (1) at the top of the pillar is a level with scales on the X and Y axes; There is an overall height adjustable mechanism; the bearing (3) is rotatable and has a scale, that is, it can drive the main scale to rotate at a fixed angle with the pillar as the axis, and provide accurate coordinates for subsequent surface simulation. 4. The measuring device for accurately measuring the overall curved surface of a flat object according to claim 2 or 3, characterized in that the bracket (4) at the bottom of the pillar is in contact with the surface of the measured object and kept horizontal, and the plane determined by the bracket is The center of the circle of the cross-section of the pillar is the reference point, so that the connection line between the probe of the electronic dial indicator and the center of the circle is parallel to the moving direction of the electronic dial indicator.