Automatic micrometer adjusting mechanism

Abstract

The utility model belongs to the technical field of micrometer adjustment, and particularly relates to an automatic micrometer adjusting mechanism which comprises a fixed sleeve, a digital display instrument, a felt seat, a measuring felt, a micrometric screw, a microdrum, a guide assembly, a supporting assembly and an adjusting assembly. The digital display instrument is fixedly installed on the fixing sleeve, the guiding assembly is arranged on the fixing sleeve, the felt base is arranged on the guiding assembly, the measuring felt is fixedly installed on the felt base, the supporting assembly is arranged on the side, away from the felt base, of the fixing sleeve, and the microdrum is arranged on the supporting assembly. The micrometric screw is arranged on the microdrum and penetrates through the fixed sleeve, the micrometric screw and the measuring felt are located on the same axis, and a pressure sensor is arranged at the end, close to the measuring felt, of the micrometric screw. The device is reasonable in design, simple to operate, capable of greatly improving the workpiece measurement efficiency, high in measurement precision, high in practicability and convenient to popularize and use.

Description

Technical Field

[0001] The utility model relates to the technical field of micrometer adjustment, in particular to an automatic adjustment mechanism of a micrometer. Background Art

[0002] Micrometer is a commonly used tool in precision measurement and is widely used in measuring the dimensions of various workpieces.

[0003] Referring to the existing authorized announcement number CN 220270268 U "A micrometer automatic adjustment mechanism", when measuring an object, the motor is started to drive the rotating rod to rotate, thereby rotating the rotating device, and the rotation of the rotating device drives the differential cylinder to rotate, so that the micrometer screw moves to the side of the measuring felt, and the required data can be measured when it touches the object. This solves the problem that the micrometer in the prior art needs to be manually operated to rotate the differential cylinder and the ratchet for measurement when in use. If the ratchet is rotated excessively, it may cause damage to the object to be measured, and the accuracy of manual operation is not very high, which is prone to errors.

[0004] The utility model provides another solution to solve the above problems.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings mentioned in the above background technology and to propose an automatic adjustment mechanism for a micrometer.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: an automatic adjustment mechanism of a micrometer, including a fixed sleeve, a digital display, a felt seat, a measuring felt, a micrometer screw, a differential cylinder, a guide assembly, a support assembly and an adjustment assembly;

[0008] The digital display is fixedly mounted on the fixed sleeve, the guide assembly is arranged on the fixed sleeve, the felt seat is arranged on the guide assembly, the measuring felt is fixedly mounted on the felt seat, the support assembly is arranged on the side of the fixed sleeve away from the felt seat, the differential cylinder is arranged on the support assembly, the micrometer screw is arranged on the differential cylinder and passes through the fixed sleeve, the micrometer screw and the measuring felt are located on the same axis, and a pressure sensor is arranged on the end of the micrometer screw close to the measuring felt, and the adjustment assembly is arranged on the support assembly and connected to the guide assembly.

[0009] Preferably, the guide assembly includes two fixed blocks, two guide rods and a guide block, the two fixed blocks are fixedly installed on the fixed sleeve, two guide rods arranged parallel to each other are fixedly installed on the side where the two fixed blocks are close to each other, the same guide block is slidably installed on the two guide rods, and the felt seat is fixedly installed on the guide block.

[0010] Preferably, the support assembly includes a circular plate and a plurality of support plates, one end of the fixed sleeve is fixedly mounted with the plurality of support plates, one end of the plurality of support plates away from the fixed sleeve is fixedly mounted with the same circular plate, and the differential cylinder is rotatably mounted on the circular plate.

[0011] Preferably, the adjustment assembly includes a servo motor, a driving gear, a screw and a transmission gear. The same screw is rotatably mounted on the two fixed blocks. The screw is threadedly connected to the guide block. A transmission gear is fixedly sleeved at one end of the screw. A servo motor is fixedly mounted on the support plate below. A driving gear is fixedly sleeved on the output shaft of the servo motor. The driving gear is meshed with the transmission gear, and the threads of the screw and the micrometer screw are in opposite directions.

[0012] Preferably, the adjustment assembly also includes a sliding sleeve and a driven gear. The sliding sleeve is axially slidably installed on the micrometer screw. The sliding sleeve is rotationally connected to one side of the fixed sleeve. The fixed sleeve is provided with a driven gear on the sliding sleeve, and the driving gear is meshed with the driven gear.

[0013] Preferably, a guide opening is provided on the micrometer screw, a strip block is slidably installed in the guide opening, and the strip block is fixedly connected to the inner side wall of the sliding sleeve.

[0014] Preferably, an arc-shaped opening is provided on the support plate located below.

[0015] The beneficial effects of the utility model are:

[0016] By setting a servo motor, a driving gear, a lead screw, a transmission gear, a sleeve and a driven gear, when it is necessary to control the measuring felt and the micrometer screw to approach or move away from each other, the servo motor can be started to make the driving gear drive the transmission gear to rotate, thereby driving the lead screw to rotate, so that the guide block drives the felt seat to move the measuring felt in the direction of approaching or moving away from the micrometer screw. At the same time, the driving gear drives the sleeve to slide along the axial direction of the micrometer screw through the driven gear, so that the measuring felt and the micrometer screw can quickly approach or move away from each other, thereby greatly improving the efficiency of workpiece measurement. By setting the guide port and the strip block, the sleeve can maintain stable sliding along the axial direction of the micrometer screw. By setting the arc port, it can avoid affecting the normal transmission of the driving gear and the transmission gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of an automatic adjustment mechanism of a micrometer proposed by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the local three-dimensional structure;

[0020] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure from another perspective.

[0021] In the figure: 1. fixed sleeve; 11. digital display; 12. felt seat; 13. measuring felt; 14. micrometer screw; 15. differential cylinder; 16. support assembly; 2. fixed block; 21. guide rod; 22. guide block; 3. lead screw; 31. transmission gear; 32. servo motor; 33. drive gear; 34. sleeve; 35. driven gear. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-3, an automatic adjustment mechanism of a micrometer, comprising a fixed sleeve 1, a digital display 11, a felt seat 12, a measuring felt 13, a micrometer screw 14, and a differential cylinder 15, the digital display 11 is fixedly mounted on the fixed sleeve 1, two fixed blocks 2 are fixedly mounted on the fixed sleeve 1, two guide rods 21 arranged parallel to each other are fixedly mounted on the side of the two fixed blocks 2 close to each other, the two guide rods 21 are slidably mounted with the same guide block 22, and the felt seat 12 is fixedly mounted on the guide block 22, which can provide support and guidance for the felt seat 12, so that it can maintain stable operation, the measuring felt 13 is fixedly mounted on the felt seat 12, a plurality of support plates are fixedly mounted on one end of the fixed sleeve 1, and a same circular plate is fixedly mounted on the end of the plurality of support plates away from the fixed sleeve 1, the differential cylinder 15 is rotatably mounted on the circular plate, which can provide stable support for the differential cylinder 15, the micrometer screw 14 is arranged on the differential cylinder 15 and passes through the fixed sleeve 1, the micrometer screw 14 and the measuring felt 13 The micrometer screw 14 is located on the same axis, and a pressure sensor is provided at one end thereof close to the measuring felt 13. The same screw 3 is rotatably installed on the two fixed blocks 2. The screw 3 is threadedly connected to the guide block 22. A transmission gear 31 is fixedly sleeved at one end of the screw 3. A servo motor 32 is fixedly installed on the support plate below. A driving gear 33 is fixedly sleeved on the output shaft of the servo motor 32. The driving gear 33 is meshed with the transmission gear 31. The threads of the screw 3 and the micrometer screw 14 are in opposite directions, so that the guide block 22 can be controlled to drive the felt seat 12 to make the measuring felt 13 move toward or away from the micrometer screw 14. A sliding sleeve 34 is axially slidably installed on the micrometer screw 14. The sliding sleeve 34 is rotatably connected to one side of the fixed sleeve 1. A driven gear 35 is fixedly sleeved on the sliding sleeve 34. The driving gear 33 is meshed with the driven gear 35. The measuring felt 13 and the micrometer screw 14 can be controlled to quickly approach or quickly move away, thereby greatly improving the efficiency of workpiece measurement.

[0024] In this embodiment, in order to enable the sliding sleeve 34 to maintain stable sliding along the axial direction of the micrometer screw 14, a guide opening is opened on the micrometer screw 14, and a strip block is slidably installed in the guide opening. The strip block is fixedly connected to the inner wall of the sliding sleeve 34.

[0025] In this embodiment, in order to prevent the lower support plate from affecting the normal transmission of the driving gear 33 and the transmission gear 31, an arc-shaped opening is opened on the lower support plate.

[0026] The circuits, electronic components and module structures involved all adopt existing technologies, which can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software, circuits and methods.

[0027] Working principle: When in use, first turn on the power supply and place the workpiece to be measured between the measuring felt 13 and the micrometer screw 14, then observe the distance between the measuring felt 13 and the micrometer screw 14 through the digital display 11. When it is necessary to control the measuring felt 13 and the micrometer screw 14 to move closer or farther away, the servo motor 32 can be started to make the driving gear 33 drive the transmission gear 31 to rotate, thereby driving the screw 3 to rotate. During the rotation, the screw 3 will be threadedly connected with the guide block 22, so that it can drive the guide block 22 to slide along the axial direction of the guide rod 21, so that the guide block 22 drives the felt seat 12 to make the measuring felt 13 move towards or away from the micrometer screw 14. At the same time, the driving gear 33 drives the sliding sleeve 34 to slide along the axial direction of the micrometer screw 14 through the driven gear 35, so that the measuring felt 13 and the micrometer screw 14 can quickly approach or quickly move away, thereby greatly improving the efficiency of workpiece measurement.

[0028] When the measuring felt 13 and the micrometer screw 14 are approaching or moving away from each other, the measuring felt 13 will apply a certain pressure to the workpiece. At this time, the pressure sensor will convert the pressure signal into an electrical signal and transmit it to the digital display 11. The pressure value of the workpiece can be observed through the digital display 11, so that the operator can apply appropriate pressure to the workpiece for measurement, and control the servo motor 32 to stop working when the measurement requirements are met.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A micrometer automatic adjustment mechanism, characterized in that: It comprises a fixed sleeve (1), a digital display (11), a felt seat (12), a measuring felt (13), a micrometer screw (14), a differential cylinder (15), a guide assembly, a support assembly (16) and an adjustment assembly; The digital display (11) is fixedly mounted on the fixed sleeve (1), the guide assembly is arranged on the fixed sleeve (1), the felt seat (12) is arranged on the guide assembly, the measuring felt (13) is fixedly mounted on the felt seat (12), the support assembly (16) is arranged on a side of the fixed sleeve (1) away from the felt seat (12), the differential cylinder (15) is arranged on the support assembly (16), the micrometer screw (14) is arranged on the differential cylinder (15) and passes through the fixed sleeve (1), the micrometer screw (14) and the measuring felt (13) are located on the same axis, and a pressure sensor is arranged at one end of the micrometer screw (14) close to the measuring felt (13), and the adjustment assembly is arranged on the support assembly (16) and connected to the guide assembly.

2. The micrometer automatic adjustment mechanism according to claim 1, characterized in that: The guide assembly comprises two fixed blocks (2), two guide rods (21) and a guide block (22); the two fixed blocks (2) are fixedly mounted on the fixed sleeve (1); two guide rods (21) arranged parallel to each other are fixedly mounted on the sides of the two fixed blocks (2) close to each other; the same guide block (22) is slidably mounted on the two guide rods (21); and the felt seat (12) is fixedly mounted on the guide block (22).

3. The micrometer automatic adjustment mechanism according to claim 1, characterized in that: The support assembly (16) comprises a circular plate and a plurality of support plates, one end of the fixed sleeve (1) is fixedly mounted with the plurality of support plates, one end of the plurality of support plates away from the fixed sleeve (1) is fixedly mounted with the same circular plate, and the differential cylinder (15) is rotatably mounted on the circular plate.

4. The micrometer automatic adjustment mechanism according to claim 2, characterized in that: The adjustment assembly comprises a servo motor (32), a driving gear (33), a screw (3) and a transmission gear (31); the same screw (3) is rotatably mounted on the two fixed blocks (2); the screw (3) is threadedly connected to the guide block (22); a transmission gear (31) is fixedly sleeved on one end of the screw (3); a servo motor (32) is fixedly mounted on a support plate located below; a driving gear (33) is fixedly sleeved on the output shaft of the servo motor (32); the driving gear (33) is meshed with the transmission gear (31); and the screw threads of the screw (3) and the micrometer screw (14) are in opposite directions.

5. The micrometer automatic adjustment mechanism according to claim 4, characterized in that: The adjustment assembly further comprises a sliding sleeve (34) and a driven gear (35); the sliding sleeve (34) is axially slidably mounted on the micrometer screw (14); the sliding sleeve (34) is rotationally connected to one side of the fixed sleeve (1); a driven gear (35) is fixedly mounted on the sliding sleeve (34); and the driving gear (33) is meshed with the driven gear (35).

6. The micrometer automatic adjustment mechanism according to claim 5, characterized in that: The micrometer screw (14) is provided with a guide opening, in which a strip block is slidably installed, and the strip block is fixedly connected to the inner side wall of the sliding sleeve (34).

7. The automatic adjustment mechanism of a micrometer according to claim 1, characterized in that: An arc-shaped opening is provided on the supporting plate located below.

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