CN108180802B

CN108180802B - Inside and outside diameter digital display micrometer

Info

Publication number: CN108180802B
Application number: CN201711499021.2A
Authority: CN
Inventors: 李玉明
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2021-05-18
Anticipated expiration: 2037-12-29
Also published as: CN108180802A

Abstract

The invention relates to a digital display micrometer capable of measuring the sizes of the inner diameter and the outer diameter of a component, which is characterized in that the sizes of the inner diameter and the outer diameter are measured by adjusting a direction adjusting block. The two direction adjusting blocks are arranged at two ends of a spring on the movable shaft, the direction adjusting block at one end is rotated into the vertical clamping groove at one side of the movable shaft, the direction adjusting block at the other end is close to the end surface of the ruler body, at the moment, the spring abuts against the direction adjusting block close to one side of the ruler body, and reverse elasticity is generated to push the direction adjusting block in the clamping groove of the movable shaft and drive the movable shaft to move. The movable shaft and the digital display moving shaft move in parallel and synchronously. Therefore, the moving value of the moving shaft can be displayed on a screen of a digital display device of the inside and outside diameter digital display micrometer. The invention fills the blank of related measurement fields in China, and the structural design for completing the measurement of the inner and outer diameters under the condition of not disassembling, installing dial indicators and other components is also superior to foreign similar products.

Description

Inside and outside diameter digital display micrometer

Technical Field

The invention relates to a digital display micrometer for measuring the inner and outer diameter sizes of a component.

Background

In the manufacturing industry, when the inner and outer diameter dimensions of a component are precisely measured, the inner micrometer and the outer micrometer are generally used for measurement respectively. In practical application, the diameter of the measuring heads of the outside micrometer and the inside micrometer is 8 millimeters, and the thickness of the sleeve diameter of the micrometer body reaches 15 millimeters, so that the inside diameter and the outside diameter cannot be measured when the height of the inside diameter and the outside diameter of the component is less than 8 millimeters. Therefore, in different factories and enterprises, measuring tools special for measuring the inner diameter or the outer diameter can be manufactured according to the size requirements of different parts, and the production cycle, the measurement precision, the reuse rate, the resource waste and other factors of the measuring tools restrict the production and processing capacity development and the profit margin of the factories and enterprises. It is known that no measurement product of relevant size is sold at present in China. The foreign measuring ruler table with the function of measuring the internal and external diameters is a multifunctional digital display ruler with the product number of 1197 shown in Tesaintosa and Austria English of Switzerland, and has some defects in practical application: 1 when measuring the inner diameter or the outer diameter, accessories such as dial indicator heads and the like need to be disassembled and assembled, and the assembly process is time-consuming and complicated. The gauge needle of the 2 percent gauge represents a positive and negative indication value which changes when measuring the inner diameter and the outer diameter, and the readings are often confused. 3, when the reading of the dial indicator can not be ensured, the pointer and the indicating value of the dial indicator deviate, and the read numerical value has errors to influence the measurement result. 4 the depth of measurement and the adjustment space of the depth positioning surface are small, and the measurement range of the components is limited. What is more important is that the imported measuring ruler list monopolizes the market and is expensive, and China urgently needs own internal and external diameter measuring instruments.

Disclosure of Invention

The invention relates to a digital display micrometer capable of measuring the sizes of the inner diameter and the outer diameter of a component, which is characterized in that the sizes of the inner diameter and the outer diameter are measured by adjusting a direction adjusting block. Before measuring the sizes of the components, determining whether the inner diameter is measured or the outer diameter is measured according to known measurement information, and adjusting the positions of the adjusting blocks in two directions; the two direction adjusting blocks are arranged at two ends of a spring on the movable shaft, the direction adjusting block at one end is rotated into the vertical clamping groove at one side of the movable shaft, the direction adjusting block at the other end is close to the end surface of the ruler body, at the moment, the spring abuts against the direction adjusting block close to one side of the ruler body, and reverse elasticity is generated to push the direction adjusting block in the clamping groove of the movable shaft and drive the movable shaft to move. The movable shaft and the digital display moving shaft of the digital display device are fixed on the moving shaft, and the movable shaft and the digital display moving shaft move in parallel and synchronously. Therefore, the moving value of the moving shaft can be displayed on a screen of a digital display device of the inside and outside diameter digital display micrometer. And the direction and the height between the measuring heads at the two ends and the depth positioning shaft are adjusted according to the measuring requirements before measurement. During specific measurement, the standard length is determined according to the inner diameter or outer diameter of a measured component by adopting a working principle of comparative measurement, the standard length spliced by the standard gauge blocks is corrected, so that the inner diameter value or the outer diameter value of the inner and outer diameter digital display micrometers is consistent with the size of the spliced gauge blocks, and then the indicating value displayed by the inner and outer diameter digital display micrometers is returned to zero. And the deviation of the actual measured value and the standard value is added with the standard value, so that the actual value of the part is obtained. The invention has the advantages that the measurement of the inner diameter and the outer diameter of the component is realized through the adjustment of the two-direction adjusting blocks, the time-consuming and complicated work of installing and disassembling accessories such as a dial indicator is avoided, and the production efficiency is improved. Because the digital display device with fixed direction is adopted to display the measured value, the reading can not be confused in direction, and the phenomenon that the pointer of the dial indicator deviates from the indicating value can not occur when the measured value is read, thereby improving the safety and the accuracy of the measured value. Because the measuring head and the depth positioning shaft of the invention have the same size and fit, the measuring head and the depth positioning shaft can adjust the height, exchange the direction and the position, increase the adjusting capacity, enlarge the measuring range, greatly reduce the production cost of enterprise factories and improve the production efficiency in actual use.

The invention fills the blank of related measurement fields in China, and the structural design for completing the measurement of the inner and outer diameters under the condition of not disassembling, installing dial indicators and other components is also superior to foreign similar products. The method is applied to production, processing, assembly and maintenance of aviation, aerospace, war industry, ships and the like. The method has positive significance for the development of measurement technology and assembly manufacturing industry in China.

Description of the drawings fig. 1 is a general block diagram, fig. 2 and 3 are specific embodiments, fig. 4 is a partially exploded view, and fig. 5 is a schematic diagram of an inlet meter tesainotesa. In the figure: 1 main ruler 2 ruler body 3 moving ruler body 4 depth positioning shaft 5 measuring head 6 direction adjusting block 7 moving shaft 8 moving shaft 9 first screw 10 second screw 11 spring 12 digital display device 13 limit screw 14 fastening screw 15 digital display moving shaft 16 measured piece

Embodiment 1 is known as inner diameter measurement according to fig. 2. The directions and the heights of the measuring heads 5 at the two ends and the depth positioning shaft 4 are adjusted according to the measuring requirements before measurement, so that the measuring heads 5 are in reasonable and effective measuring positions during measurement. The positions of the two direction adjusting blocks 6 are adjusted; the direction adjusting block 6 at the right end is rotated into the vertical clamping groove at the right side of the movable shaft 8, the other end of the direction adjusting block abuts against the end face of the ruler body, the spring 11 abuts against the direction adjusting block abutting against one face of the ruler body, and reverse elasticity is generated to push the direction adjusting block 6 in the clamping groove of the movable shaft and drive the movable shaft 8 to move rightwards. And (4) calibrating the standard length spliced by the standard gauge blocks, namely the measured size, and then enabling the indication value displayed by the internal and external diameter digital display micrometer to return to zero. When in measurement, the measuring head 5 at one end of the movable ruler body 3 is firstly placed at a measuring position, and then the movable shaft 7 is pushed leftwards corresponding to the direction of the spring force, so that the measuring heads at two ends are placed at the right side when the distance is less than the measured size. And taking the left measuring head 5 as a fixed point, horizontally pushing and pulling the right side of the inside and outside diameter digital display micrometer, and adding the maximum indicating value appearing on the screen of the digital display device and the standard length spliced by the standard measuring blocks to obtain the actual size of the measured part.

Embodiment 2 is known as an outer diameter measurement according to the illustration in fig. 3. The directions and the heights of the measuring heads 5 at the two ends and the depth positioning shaft 4 are adjusted according to the measuring requirements before measurement, so that the measuring heads 5 are in reasonable and effective measuring positions during measurement. The positions of the two direction adjusting blocks 5 are well adjusted; the direction adjusting block 6 at the left end is rotated into the vertical clamping groove at the left side of the movable shaft 8, the other end of the direction adjusting block is close to the end face of the ruler body, the spring 11 is tightly propped against the direction adjusting block 6 close to one face of the ruler body, and reverse elasticity is generated to push the direction adjusting block 6 in the clamping groove of the movable shaft and drive the movable shaft 8 to move leftwards. And (4) calibrating the standard length spliced by the standard gauge blocks, namely the measured size, and then enabling the indication value displayed by the internal and external diameter digital display micrometer to return to zero. When in measurement, the measuring head 5 at one end of the movable ruler body 3 is firstly placed in a measuring position and then placed in the right measuring head. And taking the left measuring head 5 as a fixed point, horizontally pushing and pulling the right side of the inside and outside diameter digital display micrometer, and adding the maximum indicating value appearing on the screen of the digital display device and the standard length spliced by the standard measuring blocks to obtain the actual size of the measured part.

Claims

1. The inside and outside diameter digital display micrometer is characterized in that the inside and outside diameter measurement is realized through the adjustment of a direction adjusting block (6), specifically, the inside and outside diameter digital display micrometer comprises a micrometer body (2) and a main micrometer (1), a digital display device (12), a movable shaft (7) and 2 direction adjusting blocks (6) are arranged on the micrometer body (2), a hole which penetrates through the micrometer body (2) up and down is formed in the micrometer body, the movable shaft (7) is arranged in the hole, the digital display device (12) is fixedly connected with the movable shaft (7) through a digital display movable shaft (15), a groove is formed in the micrometer body (2), a movable shaft (8) is arranged in the groove, two long grooves are formed in the surface of the movable shaft (8) along the axial direction, two arc-section clamping grooves communicated with the long grooves are respectively arranged on the same side of each long groove, the arc-section clamping grooves on the two long grooves are positioned on the same section of the movable shaft (8), and the direction adjusting block (6) is of a cylindrical, the direction adjusting block (6) inner wall, the position that corresponds with rectangular groove on loose axle (8), be equipped with two archs, direction adjusting block (6) are through two protruding matches on two rectangular grooves of loose axle (8), two archs can block into in the segmental arc draw-in groove on loose axle (8), and cup jointed spring (11) on loose axle (8) between two direction adjusting blocks (6), the both ends of spring (11) respectively with two direction adjusting blocks (6) fixed connection, set up on the groove that loose axle (8) place with move the hole that runs through between the hole that axle (7) were located, loose axle (8) pass through hole and remove axle (7) fixed connection, the lower extreme of removing axle (7) connects measuring head (5); the main scale (1) is movably provided with a movable scale body (3), the movable scale body (3) is movably connected to the main scale (1) through a first screw (9), and the lower end of the movable scale body (3) is connected with another measuring head (5).

2. The inside and outside diameter digital display micrometer according to claim 1, further comprising two depth positioning shafts (4), one depth positioning shaft (4) being disposed on the blade (2) at either side of the measuring head (5) at the lower end of the moving shaft (7), the other depth positioning shaft (4) being disposed at either side of the measuring head (5) at the lower end of the moving blade (3), the two depth positioning shafts (4) being adjustable in height.