CN114034222A - High-precision digital display vernier caliper and measuring method thereof - Google Patents
High-precision digital display vernier caliper and measuring method thereof Download PDFInfo
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- CN114034222A CN114034222A CN202111313293.5A CN202111313293A CN114034222A CN 114034222 A CN114034222 A CN 114034222A CN 202111313293 A CN202111313293 A CN 202111313293A CN 114034222 A CN114034222 A CN 114034222A
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- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 239000004020 conductor Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/20—Slide gauges
- G01B3/205—Slide gauges provided with a counter for digital indication of the measured dimension
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a high-precision digital display vernier caliper and a measuring method thereof, belonging to the technical field of fine measurement; the technical problems that the resolution precision measurement of the existing digital display vernier caliper is not accurate enough and is not beneficial to actual measurement are solved. The technical scheme is as follows: a high-precision digital display vernier caliper comprises a main caliper structure and an auxiliary caliper structure, and further comprises a digital display system and a magnetoelectric system; the measuring method comprises the following steps: s1, moving the moving magnetic field relative to the main ruler body; s2, moving a moving magnetic field of the magnetoelectric system on the two rows of fixed lead groups to generate electric signals; and S3, recording the measurement length by a digital display system. The invention has the beneficial effects that: the invention arranges two rows of fixed leads of the fixed lead group, and the upper fixed lead and the lower fixed lead are arranged in a staggered way, thereby improving the measurement resolution of the existing single row of fixed leads, improving the precision of the vernier caliper to 0.005mm, ensuring the accuracy during fine measurement and being beneficial to actual measurement.
Description
Technical Field
The invention relates to the field of fine measurement, in particular to a high-precision digital display vernier caliper and a measurement method thereof.
Background
Vernier calipers are widely used high-precision measuring tools. At present, the resolution of a digital display vernier caliper is 0.01mm, and the adopted principle is a capacitive grating displacement sensor technology. The capacitance grid displacement sensor mainly comprises a fixed grid and a movable grid, wherein the fixed grid is adhered to the main ruler body, and the movable grid is adhered to the auxiliary ruler frame and moves along with the ruler frame. The capacitance between the fixed and movable grids varies with their relative displacement according to a certain rule. Under the action of the driving AC voltage, an AC voltage signal is output at the receiving plate, and the phase of the AC voltage signal is a function of the mechanical displacement X. It is approximately linear function under certain precision.
The resolution precision measurement of the existing digital display vernier caliper is still not accurate enough, which is not beneficial to the actual measurement.
Based on this, the invention provides a high-precision digital display vernier caliper to solve the technical problems.
Disclosure of Invention
In order to solve the problems that the resolution of the existing digital display vernier caliper is not accurate enough in fine measurement and is not beneficial to actual measurement, the invention provides a high-precision digital display vernier caliper and a measurement method thereof.
The invention provides a high-precision digital display vernier caliper which comprises a main caliper structure and an auxiliary caliper structure, wherein the vernier caliper further comprises a digital display system and a magnetoelectric system;
the main scale structure comprises a main scale, a transverse groove is formed in the inner wall of a transverse plate on the front side of a main scale body, two rows of fixed lead groups are arranged in the transverse groove, each row of fixed lead group is formed by sequentially arranging a plurality of fixed leads, the main scale is movably connected with an auxiliary scale structure, the auxiliary scale structure comprises an auxiliary scale and a limiting groove, the auxiliary scale is connected with the transverse plate of the main scale in a matched mode through the limiting groove, a digital display system for digital display is arranged at the front end of the auxiliary scale, a moving magnetic field is arranged on the auxiliary scale located on the back of the digital display system, and the moving magnetic field and the auxiliary scale move synchronously.
Furthermore, the magneto-electric system consists of two rows of fixed lead wire groups and a dynamic magnetic field, wherein the dynamic magnetic field consists of two permanent magnets and a regional line generating an effective magnetic field line range, and the S pole end part of one permanent magnet and the N pole end part of the other permanent magnet are arranged in a relatively staggered manner;
the fixed lead of the fixed guide group is of an Contraband-shaped structure, and two long-edge terminals of the fixed guide group are connected with the signal collector connecting lead.
The moving magnetic field is directed to the permanent magnet S pole from the permanent magnet N pole, and when the moving magnetic field moves to the fixed conducting wire, the fixed conducting wire can cut the magnetic field line of the moving magnetic field, so that an electric signal is generated on the fixed conducting wire, the number of times of the electric signal is recorded, and the moving distance of the moving magnetic field can be obtained by multiplying the number by the distance between the fixed conducting wires.
Furthermore, the fixed wire group is arranged on the front surface of the main scale body and is opposite to the moving magnetic field on the digital display system.
Further, the distance between the adjacent fixed conducting wires in the same row is the width of a single fixed conducting wire; the upper and lower adjacent fixed wires are arranged in a relative staggered manner.
Furthermore, the width of the permanent magnet is half of the width of a fixed conducting wire of a single Contraband-type structure, the transverse distance of the permanent magnet is the width of the single fixed conducting wire, and the permanent magnets are arranged in the axial direction and are respectively arranged at the tail ends of the fixed conducting wires.
Furthermore, the line width of two sides of the fixed lead is 1 μm, the distance between two sides of the fixed lead is 3 μm, the total width of the fixed lead is 5 μm, the distance between two adjacent fixed leads is 5 μm, and the relative distance between two rows of fixed lead groups is 5 μm.
The fixed conductor sets are arranged into two rows, the moving magnetic field passes through the two rows of fixed conductor sets, the fixed conductor sets can sequentially generate electric signals, one electric signal is generated by the upper row of fixed conductor sets, the other electric signal is generated by the lower row of fixed conductor sets, if the moving magnetic field moves along the opposite direction, an electric signal continuously generated in the same row of fixed conductor sets exists at the moment, the two electric signals generated by the same fixed conductor set are used as boundary lines, corresponding distances are respectively calculated, and the moving distance is obtained through subtraction.
Furthermore, the digital display system comprises an installation cover plate and an amplification display screen, the amplification display screen is arranged on the installation cover plate, and the moving magnetic field is arranged on the back face of the digital display system and moves synchronously with the auxiliary ruler.
Further, the installation cover plate is installed at the front end of the limiting groove.
Furthermore, a difference exists between the S pole of one permanent magnet and the N pole of the other permanent magnet in the moving magnetic field, and the S pole and the N pole of the other permanent magnet are used for generating an electric signal by the fixed wire group.
Furthermore, both ends are equipped with and clean the sponge in the installation apron, clean the sponge inner wall and decide the wire laminating contact.
The back both ends of digital display system are furnished with and clean the sponge, both can reduce the vibrations between main scale and the vice chi, can also clean the piece on the main scale body, guarantee slide caliper's precision.
The main ruler and the auxiliary ruler are not in direct contact by adopting a magnetic suspension technology, so that corresponding friction is reduced.
In order to better achieve the above object, the present invention further provides a method for measuring a high-precision digital vernier caliper, which comprises the following steps:
s1, moving the moving magnetic field relative to the main ruler body: during measurement, the auxiliary ruler of the auxiliary ruler structure is moved by the mounting cover plate, and the mounting cover plate drives the moving magnetic field to move;
s2, moving the moving magnetic field of the magnetoelectric system on the two fixed lead groups to generate electric signals: when the moving magnetic field moves between the two rows of fixed lead groups, the fixed leads cut the magnetic field lines of the moving magnetic field, the fixed leads generate electric signals of induced electromotive force, and the electric signals are transmitted to the signal collector by the connecting leads;
s3, recording the measurement length by a digital display system: the amplification display screen records the times of the electric signals, the times of the electric signals are multiplied by the distance between the connecting wires of the signal collector to obtain the moving distance of the fixed wires, the moving distance of the auxiliary ruler is determined, and the measuring length is determined by the auxiliary ruler and the main ruler.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has two rows of fixed wires of the fixed wire group, the upper and lower fixed wires are arranged in a staggered way, the improvement is realized on the basis of the measurement resolution of the existing single row of fixed wires, compared with the existing grating ruler, the vernier caliper of the invention improves the precision to 0.005mm, the accuracy is ensured during fine measurement, the actual measurement is facilitated, and the measurement precision of the digital display vernier caliper is further improved.
2. The wiping sponge moves along with the auxiliary ruler, so that the wiping sponge can reduce the vibration between the main ruler and the auxiliary ruler, and can clean scraps on the main ruler body to ensure the precision of the vernier caliper.
3. With the improvement of the nano-manufacturing technology, the vernier caliper can manufacture a nano-scale fixed wire group, and the measurement precision is further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a first perspective view of the present invention.
Fig. 2 is a structural front view of the present invention.
Fig. 3 is a schematic structural diagram of a main scale of the present invention.
Fig. 4 is a schematic view of the structure of the secondary ruler knot of the present invention.
Fig. 5 is a schematic structural diagram of a digital display system according to the present invention.
Fig. 6 is a schematic structural diagram of a digital display system according to the present invention.
FIG. 7 is a partial view of a fixed conductor set according to the present invention.
FIG. 8 is a diagram of a complete system for determining conductor sets in accordance with the present invention.
Wherein the reference numerals are:
1. a main scale structure; 101. a main scale; 102. a transverse groove; 2. a secondary ruler structure; 201. a secondary ruler; 202. a limiting groove; 3. a digital display system; 301. installing a cover plate; 302. wiping sponge; 303. amplifying the display screen; 4. fixing a lead group; 401. a permanent magnet S pole; 402. a permanent magnet N pole; 404. fixing a lead; 405. the signal collector is connected with the lead.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments are further detailed. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.
Examples
Referring to fig. 1 to 3 and 7 to 8, a high-precision digital display vernier caliper comprises a main caliper structure 1 and an auxiliary caliper structure 2, wherein the vernier caliper further comprises a digital display system 3 and a magnetic system.
The main scale structure 1 comprises a main scale 101, a transverse groove 102 is formed in the inner wall of a transverse plate on the front side of a scale body of the main scale 101, two rows of wire groups 4 are arranged in the transverse groove 102, each row of wire groups 4 is formed by sequentially arranging a plurality of fixed wires 404, the main scale 101 is movably connected with an auxiliary scale structure 2, the auxiliary scale structure 2 comprises an auxiliary scale 201 and a limiting groove 202, the auxiliary scale 201 is connected with the transverse plate of the main scale 101 through the limiting groove 202 in a matched mode, the front end of the auxiliary scale 201 is provided with a digital display system 3 for digital display, a movable magnetic field 5 is arranged on the auxiliary scale 201 located at the back of the digital display system 3, and the auxiliary scale 201 and the auxiliary scale are moved synchronously.
Furthermore, the magnetoelectric system consists of two rows of fixed wire groups 4 and a moving magnetic field, wherein the moving magnetic field consists of two permanent magnets and a regional wire 403 for generating an effective magnetic field line range, and the end part of one permanent magnet S pole 401 and the end part of the other permanent magnet N pole 402 are arranged in a relative staggered manner; the fixed lead 404 of the fixed guide group 4 is Contraband type structure, and two long-side terminals are connected with the signal collector connecting lead 405. The moving magnetic field is by the utmost point 401 of the directional permanent magnet S of permanent magnet N402 extremely, and when the moving magnetic field moved to fixed wire 404, fixed wire 404 can cut the magnetic field line of moving magnetic field, and fixed wire 404 produced induced potential be the signal of telecommunication promptly to transmit the signal of telecommunication to signal collector by connecting wire 405, record the signal of telecommunication number of times, and multiply and decide leading, 404 interval, can obtain the moving distance of moving magnetic field.
Furthermore, the fixed wire group 4 is arranged on the front surface of the main scale 101 and is opposite to the moving magnetic field on the digital display system 3.
Further, the spacing between adjacent fixed conductive lines 404 in the same row is the width of a single fixed conductive line 404; the upper and lower adjacent fixed conductors 404 are disposed in a staggered manner.
Further, the width of the permanent magnet is half of the width of the fixed conducting wire 404 of the single Contraband type structure, the transverse distance of the permanent magnet is the width of the single fixed conducting wire 404, and the permanent magnets are respectively arranged at the tail end positions of the fixed conducting wire 404 in the axial direction.
Further, the line width of two sides of the fixed conducting line 404 is 1 μm, the distance between two sides of the fixed conducting line 404 is 3 μm, the total width of the fixed conducting line 404 is 5 μm, the distance between two adjacent fixed conducting lines 404 is 5 μm, and the relative distance between two rows of the fixed conducting line groups 4 is 5 μm.
The fixed conductor sets 4 are arranged in two rows, the moving magnetic field passes through the two arranged conductor sets 4, the fixed conductors 404 sequentially generate electric signals, one electric signal is generated by the upper arranged conductor set 4, the other electric signal is generated by the lower arranged conductor set 4, if the moving magnetic field moves along the opposite direction, an electric signal continuously generated in the same arranged conductor set 4 exists at the moment, two electric signals generated by the same fixed conductor set 4 are used as a boundary, corresponding distances are respectively calculated, and the moving distance is obtained by subtracting the distances.
Further, the digital display system 3 comprises an installation cover plate 301 and an amplification display screen 303, the amplification display screen 303 is arranged on the installation cover plate 301, and the dynamic magnetic field is arranged on the back of the digital display system 3 and moves synchronously with the auxiliary scale 201.
Further, the mounting cover plate 301 is mounted at the front end of the limiting groove 202.
Furthermore, the height of one permanent magnet S pole 401 and the height of the other permanent magnet N402 of the moving magnetic field are different, and the moving magnetic field is used for generating an electric signal by the fixed wire group 4.
Further, two ends of the installation cover plate 301 are provided with wiping sponges 302, and the inner walls of the wiping sponges 302 are in contact with the fixed wires 404.
Both ends of the back of the digital display system 3 are provided with wiping sponges 302, so that vibration between the main ruler 101 and the auxiliary ruler 201 can be reduced, scraps on the main ruler 101 can be cleaned, and the precision of the vernier caliper is guaranteed.
The main ruler 101 and the auxiliary ruler 201 adopt a magnetic suspension technology, so that the main ruler 101 and the auxiliary ruler 201 are not in direct contact, and corresponding friction is reduced.
The working principle of the invention is as follows: during use, during measurement, the auxiliary scale 201 of the auxiliary scale structure 2 is moved by the mounting cover plate 301, the mounting cover plate 301 drives the moving magnetic field to move, the fixed lead 404 cuts the magnetic field lines of the moving magnetic field 304 when the moving magnetic field moves between the fixed leads 404, the fixed lead 404 generates induced potential, namely, electric signals, the electric signals are transmitted to the signal collector by the connecting lead 405, the times of the electric signals are recorded by the amplifying display screen 303 and multiplied by the distance between the connecting leads 405 of the signal collector to obtain the moving distance of the fixed lead 404, so that the moving distance of the auxiliary scale 201 is determined, and the measuring length is determined by the auxiliary scale 201 and the main scale 101.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A high-precision digital display vernier caliper comprises a main caliper structure (1) and an auxiliary caliper structure (2), and is characterized by further comprising a digital display system (3) and a magnetoelectric system;
the main scale structure (1) comprises a main scale (101), a transverse groove (102) is formed in the inner wall of a transverse plate on the front face of a scale body of the main scale (101), two rows of fixed lead groups (4) are arranged in the transverse groove (102), each row of fixed lead groups (4) is formed by sequentially arranging a plurality of fixed leads (404), the main scale (101) is movably connected with an auxiliary scale structure (2), the auxiliary scale structure (2) comprises an auxiliary scale (201) and a limiting groove (202), the auxiliary scale (201) is matched and connected with the transverse plate of the main scale (101) through the limiting groove (202), the front end of the auxiliary scale (201) is connected with the digital display system (3), a dynamic magnetic field (5) is arranged on the auxiliary scale (201) on the back face of the digital display system (3), and the dynamic magnetic field and the auxiliary scale (201) move synchronously.
2. A high precision digital vernier caliper according to claim 1, wherein said magneto-electric system is composed of two rows of fixed wire sets (4) and a moving magnetic field, said moving magnetic field is composed of two permanent magnets and a regional line (403) generating an effective magnetic field line range, wherein one permanent magnet south pole (401) end and the other permanent magnet north pole (402) end are arranged in a relative offset manner;
the fixed lead (404) of the fixed lead group (4) is in an Contraband type structure, and two long-edge terminals of the fixed lead group are connected with the signal collector connecting lead (405);
and the height of one permanent magnet S pole (401) and the height of the other permanent magnet N pole (402) of the moving magnetic field are different, and the moving magnetic field is used for generating an electric signal by the fixed wire group (4).
3. The high-precision digital vernier caliper according to claim 2, wherein the fixed wire group (4) is disposed on the front surface of the main scale (101) opposite to the moving magnetic field of the digital display system (3).
4. A high-precision digital vernier caliper according to claim 3, wherein the upper and lower adjacent fixed wires (404) are arranged in a relative offset manner;
the spacing between the adjacent fixed conducting wires (404) in the same row is the width of a single fixed conducting wire (404).
5. A high-precision digital vernier caliper according to claim 4, wherein the width of the permanent magnet is half of the width of the single fixed conducting wire (404) in Contraband type structure, the transverse distance of the permanent magnet is equal to the width of the single fixed conducting wire (404), and the permanent magnets are axially arranged at the end positions of the fixed conducting wires (404).
6. A high-precision digital vernier caliper according to claim 5, wherein the width of the two sides of the fixed conducting wire (404) is 1 μm, the distance between the two sides of the fixed conducting wire (404) is 3 μm, the total width of the fixed conducting wire (404) is 5 μm, the distance between two adjacent fixed conducting wires (404) is 5 μm, and the relative distance between two rows of fixed conducting wire sets (4) is 5 μm.
7. The high-precision digital display vernier caliper according to claim 6, wherein the digital display system (3) comprises an installation cover plate (301) and an amplification display screen (303), the amplification display screen (303) is arranged on the installation cover plate (301), and the dynamic magnetic field is arranged on the back of the digital display system (3) and moves synchronously with the auxiliary scale (201);
the mounting cover plate (301) is mounted at the front end of the limiting groove (202).
8. The high-precision digital vernier caliper according to claim 7, wherein a wiping sponge (302) is arranged at two ends in the mounting cover plate (301), and the inner wall of the wiping sponge (302) is in contact with the fixed wire (404).
9. A method for measuring a high-precision digital display vernier caliper according to claim 8, comprising the steps of:
s1, moving the moving magnetic field relative to the main scale (101): during measurement, the auxiliary ruler (201) of the auxiliary ruler structure (2) obtains movement of the mounting cover plate (301), and the mounting cover plate (301) drives the moving magnetic field to move;
s2, moving the moving magnetic field of the magnetoelectric system on two rows of fixed lead groups (4) to generate electric signals: when the moving magnetic field moves between the two rows of fixed lead groups (4), the fixed leads (404) cut the magnetic field lines of the moving magnetic field (304), the fixed leads (404) generate electric signals of induced electromotive force, and the electric signals are transmitted to the signal collector through the connecting leads (405);
s3, recording the measurement length by a digital display system (3): the amplification display screen (303) records the times of the electric signals, the times are multiplied by the distance between the connecting wires (405) of the signal collector to obtain the moving distance of the fixed wire (404), the moving distance of the auxiliary ruler (201) is determined, and the measuring length is determined by the auxiliary ruler (201) and the main ruler (101).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111313293.5A CN114034222A (en) | 2021-11-08 | 2021-11-08 | High-precision digital display vernier caliper and measuring method thereof |
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| CN202111313293.5A CN114034222A (en) | 2021-11-08 | 2021-11-08 | High-precision digital display vernier caliper and measuring method thereof |
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| JPS56141514A (en) * | 1980-04-04 | 1981-11-05 | Nec Corp | Length measuring device |
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| CN109855502A (en) * | 2019-03-22 | 2019-06-07 | 桂林理工大学 | A kind of vernier caliper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56141514A (en) * | 1980-04-04 | 1981-11-05 | Nec Corp | Length measuring device |
| JPS59142403A (en) * | 1983-02-02 | 1984-08-15 | Kawaguchiko Seimitsu Kk | Digital vernier caliper |
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