CN2807195Y - Measurer for radius of non-holonomic cylindrical surface - Google Patents

Abstract

The utility model discloses a measuring device for the radius of an incomplete cylindrical surface. Bolt 3 to connect. The shape of the measuring base 2 is "", including the upper end 2.1 and two left and right brackets 2.4, the upper end 2.1 is supported by the left and right two brackets 2.4; the center of the upper surface of the upper end 2.1 has a middle hole 2.2, and the middle hole 2.2 penetrates The upper end 2.1 has a bolt hole 2.3 in the center of the front or back of the upper end 2.1, and the end of the bolt hole 2.3 just communicates with the middle hole 2.2. ; The bolt 3 connects the dial indicator or the dial indicator 1 with the measuring base 2 through the bolt hole 2.3. The utility model not only has simple measurement, but also has high precision and is easy to apply when measuring mechanical parts with incomplete cylindrical surface shapes.

Description

Measuring device for radius of incomplete cylindrical surface

technical field

The utility model relates to a measuring device for the radius of an incomplete cylindrical surface.

Background technique

In engineering, the shape of incomplete cylindrical surfaces (including inner and outer cylindrical surfaces) is used in many occasions, such as mechanical parts, etc. Sometimes it is necessary to know the radius of these cylindrical surfaces, but these incomplete cylindrical surfaces cannot be directly measured by standard measuring tools , must rely on other methods to measure, in order to solve this problem, the following invention is proposed.

Utility model content

The purpose of the utility model is to provide a measuring device for the radius of an incomplete cylindrical surface, so as to measure the radius of the incomplete cylindrical surface conveniently and quickly.

The measuring device described in the utility model includes a dial indicator or a dial indicator (selected according to the accuracy needs), and also includes a measuring base and bolts, and the dial indicator or the dial indicator and the measuring base are connected by bolts.

The dial indicator or dial indicator is a standard measuring device, which is composed of a dial, a middle cylindrical surface and a pointed head. The middle cylindrical surface is connected directly below the dial, and the pointed head is connected directly below the middle cylindrical surface.

The shape of the measuring base is "", including the upper end and two left and right brackets, the upper end is supported by the left and right two brackets; there is a middle hole in the center of the upper surface of the upper end, and the middle hole penetrates the upper end, the front or back of the upper end There is a bolt hole in the center, and the end of the bolt hole just communicates with the middle hole, and the middle hole is used to cooperate with the middle cylindrical surface on the dial indicator or the dial indicator.

The symmetrical plane of the upper end of the two supports is symmetrical, and the outer surface of the support is perpendicular to the upper surface of the upper end.

The bolts are fixedly connected to the dial gauge or the dial indicator and the measuring base through the bolt holes.

The diameter of the bolt hole is smaller than the diameter of the middle hole.

The bottom edge of the outer surface of the bracket is in contact with the generatrix of the incomplete cylindrical surface of the measured object.

Because the utility model can measure the radius of the non-complete cylindrical surface with different precision requirements by selecting the dial indicator or the dial indicator; in addition, the measurement purpose is achieved by measuring the base, and then the radius of the non-complete cylindrical surface is calculated by calculation.

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

(1) The utility model connects the dial indicator or the dial indicator and the measuring base through bolts, and the dial indicator or the dial indicator can be selected according to the accuracy requirements, so the radius of the incomplete cylindrical surface with different accuracy requirements can be measured ;

(2) Since the non-complete cylindrical surface cannot be directly measured by standard measuring tools, the utility model can calculate the radius of the non-complete cylindrical surface after measuring the non-complete cylindrical surface through the measuring base and dial indicator or dial indicator.

Description of drawings

Fig. 1 is the structural representation of the measuring device of the incomplete cylindrical surface radius of the present utility model;

Fig. 2 is the structural representation of dial indicator or dial indicator among Fig. 1;

Fig. 3 is a schematic structural view of the measuring base in Fig. 1;

Fig. 4 is the schematic diagram when the utility model measures the incomplete cylindrical surface;

Fig. 5 is a schematic diagram of the principle of measuring the radius of the cylindrical surface of the measured object.

In the figure: 1-Dial indicator or dial indicator 1.1 is the dial 1.2 is the middle cylindrical surface 1.3 is the pointed head 2-measurement base 2.1 is the upper end 2.2 is the middle hole 2.3 is the bolt hole 2.4 is the bracket 2.5 is the symmetrical plane 3-bolt 4-object to be measured

Detailed ways

In order to better understand the utility model, the utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, the utility model comprises a dial indicator or a dial indicator 1 (selected according to accuracy needs), also includes a measuring base 2 and a bolt 3, and the dial indicator or dial indicator 1 and the measuring base 2 pass through the bolt 3 to connect.

As shown in Figure 2, the dial indicator or dial indicator 1 is a standard measuring device, which is composed of a dial 1.1, a middle cylindrical surface 1.2 and a pointed head 1.3. Directly below connect the pointed meter head 1.3.

包括上端部2.1和左右两个支架2.4，上端部2.1由左右两个支架2.4支撑；上端部2.1的上表面中心开有中间孔2.2，中间孔2.2穿透上端部2.1，上端部2.1的正面或背面中心开有螺栓孔2.3，螺栓孔2.3的末端刚好与中间孔2.2连通，中间孔2.2用于配合千分表或百分表1上的中间圆柱面1.2。As shown in Figure 3, the shape of the measuring base 2 is

Including the upper end 2.1 and two left and right brackets 2.4, the upper end 2.1 is supported by the left and right two brackets 2.4; the center of the upper surface of the upper end 2.1 has a middle hole 2.2, the middle hole 2.2 penetrates the upper end 2.1, the front of the upper end 2.1 or There is a bolt hole 2.3 in the center of the back, and the end of the bolt hole 2.3 just communicates with the middle hole 2.2, and the middle hole 2.2 is used to cooperate with the middle cylindrical surface 1.2 on the dial indicator or the dial gauge 1.

The two brackets 2.4 are symmetrical to the symmetry plane 2.5 of the upper end 2.1, and the outer surfaces of the brackets 2.4 are perpendicular to the upper surface of the upper end 2.1.

The bolt 3 fixedly connects the dial indicator or the dial indicator 1 with the measuring base 2 through the bolt hole 2.3; the diameter of the bolt hole 2.3 is smaller than the diameter of the middle hole 2.2.

As shown in FIG. 4 , the bottom edge of the outer surface of the bracket 2.4 is in contact with the generatrix of the incomplete cylindrical surface of the measured object 4 . The measuring device of the present invention is placed on the surface of the non-complete cylindrical surface of the measured object 4, wherein the two supports 2.4 on the measuring base 2 are kept in contact with the generatrices of the non-complete cylindrical surface of the measured object 4.

As shown in Figure 5, the formula for calculating the radius is R ² =(L/2) ² +(RH) ² , where L is the distance between the outer surfaces of the two brackets 2.4 on the measurement base 2, and H is the dial indicator or The length measured by the dial indicator 1, R is the radius of the incomplete cylindrical surface of the measured object 4.

Before the measurement, the measuring device of the present utility model is placed on the standard platform, and the dial indicator or dial indicator 1 is zeroed, and then the measuring device is used to measure the measured cylindrical surface to obtain the value of the dial indicator or dial indicator 1. The reading is H, because L is known, the actual radius of the measured cylindrical surface can be calculated by the formula R ² =(L/2) ² +(RH) ² .

The utility model not only has simple measurement, but also has high precision and is easy to apply when measuring mechanical parts with incomplete cylindrical surface shapes.

Claims (6)

1. A measuring device for the radius of a non-complete cylindrical surface, comprising a dial indicator or a dial indicator (1), is characterized in that it also includes a measuring base (2) and a bolt (3), a dial indicator or a dial indicator ( 1) and the measuring base (2) are connected by bolts (3). 2. The measuring device for the radius of an incomplete cylindrical surface according to claim 1, characterized in that the shape of the measuring base (2) is It includes an upper end (2.1) and two left and right brackets (2.4), and the upper end (2.1) is supported by the left and right two brackets (2.4). 3. The measuring device of the incomplete cylindrical surface radius according to claim 2, characterized in that the center of the upper surface of the upper end (2.1) has an intermediate hole (2.2), and the intermediate hole (2.2) penetrates the upper end ( 2.1), there is a bolt hole (2.3) in the center of the front or back of the upper end (2.1), the end of the bolt hole (2.3) just communicates with the middle hole (2.2), and the middle hole (2.2) is used to match the dial indicator or dial gauge The middle cylindrical surface (1.2) on the subtable (1). 4. the measuring device of incomplete cylindrical surface radius according to claim 3, it is characterized in that described two supports (2.4) are symmetrical to the plane of symmetry (2.5) of upper end (2.1), and the outer surface of support (2.4) perpendicular to the upper surface of the upper end (2.1). 5. The measuring device of incomplete cylindrical surface radius according to claim 4, characterized in that said bolt (3) connects dial indicator or dial indicator (1) with measuring base (2) through bolt hole (2.3) ) are fixedly connected. 6. The device for measuring the radius of an incomplete cylindrical surface according to claim 3, 4 or 5, characterized in that the diameter of the bolt hole (2.3) is smaller than the diameter of the middle hole (2.2).

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