CN107270819A - Digimatic micrometer is surveyed in a kind of vertical keyway - Google Patents

Abstract

The invention discloses a vertical keyway internal measurement digital display micrometer, which comprises a vertical main body and a measuring lever hinged at the middle part; Ruler, grating ruler is electrically connected to the display module; a return spring is arranged between the upper end of the main body and the upper end of the measuring lever; two fixed measuring heads are arranged at the lower end of the main body, and a movable measuring head is arranged at the lower end of the measuring lever; two fixed measuring heads and a The active measuring heads are respectively located at the three vertices of a triangle. The present invention uses the movable vertical main body and the measuring lever to make the edges of the fixed measuring head and the movable measuring head close to the two side walls of the groove in the groove, and uses the grating ruler to measure the moving distance of the movable measuring head. The width of the groove, the width of the groove in the groove, is displayed on the display module, and the display is accurate; the three-point measurement of the fixed measuring head and the movable measuring head is more stable.

Description

A vertical keyway internal measurement digital display micrometer

technical field

The invention relates to the field of micrometers, in particular to a vertical keyway internal measurement digital display micrometer.

Background technique

In the certification standard of the German Automobile Industry Association "VDA" (the highest standard in the world) promoted by the global machinery industry, all processing parts require data display, and the current mechanical measurement and processing are all measured with a horizontal two-point probe inner diameter micrometer For the width dimension of grooves (refer to Figure 5), there is no problem with the inner diameter micrometer being horizontal in the open space, but if the keyway is reprocessed on the bottom of the closed deep groove (refer to Figure 6), the existing inner diameter micrometer cannot be placed in the position to be detected If the data is read directly and accurately, all digitization cannot be realized, and the requirements of "VDA" cannot be met.

So now be badly in need of a kind of micrometer that can accurately measure the groove width of deep groove bottom surface.

Contents of the invention

The purpose of the present invention is to provide a vertical keyway internal measurement digital display micrometer to solve the problem that the existing micrometer cannot measure the groove width at the bottom of the deep groove.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

The present invention is a vertical keyway internal measurement digital display micrometer, comprising a vertical main body and a measuring lever hinged at the middle part; the lower end of the main body and the measuring lever are flush, the upper end of the main body is provided with a display module, and the lower end of the measuring lever is provided with a grating Ruler, the grating ruler is electrically connected to the display module; a return spring is arranged between the upper end of the main body and the upper end of the measuring lever; two fixed measuring heads are arranged at the lower end of the main body away from the measuring lever. A movable measuring head is arranged on the side away from the main body at the lower end of the measuring lever; the two fixed measuring heads and one movable measuring head are on the same horizontal plane, and are respectively located on three vertices of a triangle.

Further, the main body is vertically provided with a groove, the measuring lever is located in the groove, and the middle position of the measuring lever is hinged to the side wall at the middle position of the groove.

Still further, the upper end of the measuring lever is provided with a first chamber, and the lower end is provided with a second chamber; the first chamber communicates with the upper end of the groove, and the second chamber communicates with the groove. The lower end of the groove is connected; the upper end of the measuring lever penetrates into the first cavity, and a pressing head is hinged, and the pressing head passes through the side away from the main body from the first cavity; the lower end of the measuring lever penetrates into the second cavity Inside, it is hinged with the movable measuring head, and the movable measuring head passes out from the side of the second cavity away from the main body.

Still further, the upper end of the measuring lever is provided with a first waist-shaped hole, and the pressing head is hinged in the first waist-shaped hole, so that the pressing head can move up and down relative to the measuring lever.

Still further, the lower end of the measuring lever is provided with a second waist-shaped hole, and the movable measuring head is hinged in the second waist-shaped hole, so that the movable measuring head can move up and down relative to the measuring lever.

Still further, the shape of the end of the movable measuring head away from the main body is a semi-cylindrical shape, and the shapes of the fixed measuring heads are both semi-cylindrical.

Still further, the measuring lever is curved at the hinged position.

Still further, the fixed measuring head is fixed with a fixed measuring rod extending downward, and the movable measuring head is fixed with a movable measuring rod extending downward.

Still further, the fixed measuring rod is integrally formed with the fixed measuring head, and the movable measuring rod is integrally formed with the movable measuring head.

Compared with the prior art, the beneficial technical effects of the present invention are as follows:

The present invention uses the movable vertical main body and the measuring lever to make the edges of the fixed measuring head and the movable measuring head close to the two side walls of the groove in the groove, and uses the grating ruler to measure the moving distance of the movable measuring head, and adds the lower end of the device itself The width of the groove, the width of the groove in the groove, is displayed on the display module, and the display is accurate; the three-point measurement of the fixed measuring head and the movable measuring head is more stable.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of one embodiment of the digital display micrometer in the vertical keyway of the present invention;

Fig. 2 is a schematic structural view of one embodiment of the vertical keyway internal measurement digital display micrometer of the present invention;

Fig. 3 is a schematic diagram of the internal structure of one embodiment of the vertical keyway internal measurement digital display micrometer of the present invention;

Fig. 4 is the structure schematic diagram of another embodiment of the digital display micrometer measured inside the vertical keyway of the present invention;

Fig. 5 is the structural representation of existing micrometer;

Fig. 6 is a schematic diagram of the groove structure at the bottom of the deep groove;

Description of reference signs: 1. Main body; 2. Measuring lever; 3. Display module; 4. Grating scale; 5. Return spring; 6. Fixed measuring head; 7. Movable measuring head; 8. Groove; 9. First 10, the second cavity; 11, the pressing head; 12, the first waist hole; 13, the second waist hole; 14, the fixed measuring rod; 15, the movable measuring rod.

detailed description

As shown in Figures 1-3, one specific embodiment of a vertical keyway internal measurement digital display micrometer includes a vertical main body 1 and a measuring lever 2 hinged in the middle. The main body 1 is vertically provided with a groove 8, and the measuring lever 2 is vertically placed in the groove 8, and the middle position of the measuring lever 2 is hinged with the side wall of the middle position of the groove 8, so that the measuring lever can Relative rotation relative to the main body, wherein the measuring lever 2 is curved in the hinged position. The upper end of the measuring lever 2 is formed with a first cavity 9, and the lower end is formed with a second cavity 10; the first cavity 9 communicates with the upper end of the groove 8, and the second cavity 10 is connected to the groove 8. The lower end of the groove 8 communicates. After the measuring lever is hinged to the inside of the groove, the upper end of the measuring lever 2 penetrates into the first cavity 9, and the pressing head 11 is hinged, and the pressing head 11 passes through the side away from the main body 1 of the first cavity 9 . After the measuring lever is hinged to the inside of the groove, the lower end of the measuring lever 2 penetrates into the second cavity 10 and is hinged with the movable measuring head 7, and the movable measuring head 7 is away from the side of the second cavity 10 away from the main body 1 wear out. A return spring 5 is installed between the upper end of the main body 1 and the upper end of the measuring lever 2, so that the present invention can reset under the action of the return spring after pressing the pressing head to complete the measurement, so as to facilitate the next measurement. In order to prevent the mechanical dead point of the measuring lever during its activity, the upper end of the measuring lever 2 is provided with a first waist-shaped hole 12, and the pressing head 11 is hinged in the first waist-shaped hole 12, which is to form a shape on the pressing head. The hinged rod is inserted into the first waist-shaped hole so that the pressing head 11 can move up and down relative to the measuring lever 2; the lower end of the measuring lever 2 is provided with a second waist-shaped hole 13, and the movable measuring head 7 Hinged in the second waist-shaped hole 13, that is, to form a hinged rod on the movable measuring head, and insert the hinged rod into the second waist-shaped hole, so that the movable measuring head 7 can move up and down relative to the measuring lever 2; make the measuring lever When rotating, when the vertical distance between the two ends changes, the pressing head and the movable measuring head can adjust the vertical distance by themselves, so as to prevent the occurrence of mechanical dead point and cause the measuring lever to fail to rotate.

A display module 3 is installed on the upper end of the main body 1, and a grating scale 4 is installed on the lower end of the measuring lever 2. The grating scale 4 is connected to the display module 3 by wires, and the wires pass through the groove 8 of the main body 1. It is best to wire the wires Fixed on the side wall of the groove, connect the grating ruler 4 and the display module 3, so that the display module can display the width of the groove in the groove according to the moving distance of the grating ruler. The specific working principle of the grating ruler and the display module to measure the moving distance is The prior art will not be repeated here. Specifically, the grating ruler is installed in the movable measuring head hinged at the lower end of the measuring lever, and moves synchronously with the movable measuring head. The lower end of the main body 1 away from the measuring lever 2 is formed with two semi-cylindrical fixed measuring heads 6, and the end of the movable measuring head 7 away from the main body 1 is shaped as a semi-cylindrical. The two fixed measuring heads 6 and one movable measuring head 7 are on the same horizontal plane, and are respectively located on three vertices of a triangle. When measuring, the two fixed measuring heads are close to a side wall of the groove in the groove, and the movable measuring The head moves perpendicular to the plane determined by the two fixed measuring heads to complete the vertical distance measurement of the groove in the groove, forming a three-point measurement, which is the most stable mechanically, and realizes the width measurement of the conventional groove at the bottom of the groove.

In this specific embodiment, the display module is an electronic display screen, and the three buttons on the electronic display screen are a power switch, a reset switch, and a light switch. Accurate and clear reading data.

Another specific embodiment of the present invention, as shown in Figure 4, in order to measure the groove in the groove with less width, prevent the lower end of the measuring lever, the movable measuring head and the fixed measuring head from being unable to be inserted into the groove at the bottom of the groove, other features are the same as The above is the same, and will not be repeated here. The fixed measuring head 6 is formed with a fixed measuring rod 14 extending downward, and the movable measuring head 7 is formed with a movable measuring rod 15 extending downward. The fixed measuring rod and the movable measuring rod Bending inwards and keeping it vertically downward can also achieve three-point measurement, but it reduces the occupied volume of the fixed measuring rod and the movable measuring rod, and can be inserted into the groove at the bottom of the smaller groove to realize the miniature measurement of the bottom of the groove. Groove width measurement.

The above-mentioned embodiments are only to describe the preferred mode of the present invention, not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those skilled in the art may make various Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (9)

1. A digital display micrometer is measured in a vertical keyway, characterized in that: comprise a vertical main body (1) and a measuring lever (2) hinged at the middle part; the lower end of the main body (1) and the measuring lever (2) flush, the upper end of the main body (1) is provided with a display module (3), the lower end of the measuring lever (2) is provided with a grating ruler (4), and the grating ruler (4) is electrically connected to the display module (3); the A return spring (5) is arranged between the upper end of the main body (1) and the upper end of the measuring lever (2); two fixed measuring heads (6) are arranged at the lower end of the main body (1) away from the measuring lever (2), The lower end of the measuring lever (2) is provided with a movable measuring head (7) on the side away from the main body (1); the two fixed measuring heads (6) and one of the movable measuring heads (7) are on the same level, on the three vertices of a triangle. 2. The vertical keyway internal digital display micrometer according to claim 1, characterized in that: the main body (1) is vertically provided with a groove (8), and the measuring lever (2) is located in the groove. In the groove (8), the middle position of the measuring lever (2) is hinged with the side wall at the middle position of the groove (8). 3. The vertical keyway internal digital display micrometer according to claim 2, characterized in that: the upper end of the measuring lever (2) is provided with a first chamber (9), and the lower end is provided with a second chamber (10 ); the first cavity (9) communicates with the upper end of the groove (8), and the second cavity (10) communicates with the lower end of the groove (8); the measuring lever (2) The upper end penetrates into the first cavity (9), and the pressing head (11) is hinged, and the pressing head (11) passes through the side away from the main body (1) of the first cavity (9); the measuring lever ( 2) the lower end penetrates into the second cavity (10) and is hinged with the movable measuring head (7), and the movable measuring head (7) passes through the second cavity (10) away from the side of the main body (1) out. 4. The vertical keyway internal digital display micrometer according to claim 3, characterized in that: the upper end of the measuring lever (2) is provided with a first waist-shaped hole (12), and the pressing head (11) is hinged In the first waist-shaped hole (12), the pressing head (11) can move up and down relative to the measuring lever (2). 5. The vertical keyway internal measurement digital display micrometer according to claim 3, characterized in that: the lower end of the measuring lever (2) is provided with a second waist-shaped hole (13), and the movable measuring head (7) Hinged in the second waist hole (13), the movable measuring head (7) can move up and down relative to the measuring lever (2). 6. The vertical keyway internal measurement digital display micrometer according to claim 1, characterized in that: the shape of the end of the movable measuring head (7) away from the main body (1) is a semi-cylindrical body, and the fixed measuring head (6) are all semi-cylindrical in shape. 7. The vertical keyway internal measurement digital display micrometer according to claim 1, characterized in that: the measuring lever (2) is curved at the hinged position. 8. According to the vertical keyway internal measurement digital display micrometer according to any one of claims 1-7, it is characterized in that: said fixed measuring head (6) is fixed with a fixed measuring rod (14) extending downwards, said The movable measuring head (7) is fixed with a movable measuring rod (15) extending downward. 9. The vertical keyway internal measurement digital display micrometer according to claim 8, characterized in that: the fixed measuring rod (14) is integrally formed with the fixed measuring head (6), and the movable measuring rod (15) It is integrally formed with the movable measuring head (7).