CN115808115B - Automobile part measuring equipment for small-diameter hole groove - Google Patents
Automobile part measuring equipment for small-diameter hole groove Download PDFInfo
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- CN115808115B CN115808115B CN202310062946.XA CN202310062946A CN115808115B CN 115808115 B CN115808115 B CN 115808115B CN 202310062946 A CN202310062946 A CN 202310062946A CN 115808115 B CN115808115 B CN 115808115B
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Abstract
The invention relates to the technical field of automobile measurement, in particular to automobile part measurement equipment for small-diameter hole slots, which comprises a control box and a detection sleeve, wherein a power supply and power control assembly is arranged in the control box, a supply mechanism is arranged on the side wall of the control box, a field adding mechanism is arranged on the side wall of the detection sleeve, the supply mechanism consists of an electrostatic emission rod, a detection head, a head wiring, an electric field wiring, a magnetic field wiring and a liquid injection pipe, and the field adding mechanism consists of two symmetrical electric field plates and a group of magnetic field coils. The advantages are that: by applying a uniform strong electric field and charging the detection ball, the electric field force F generated when the electric charge quantity is Q can be obtained, so that the applied electric field strength E can be calculated, the distance d between the electric field plates can be calculated easily by the known power supply voltage U, the required measured value can be obtained, the accuracy of the measured value is high, the measuring process is not limited by the internal structure shape of the hole groove, and the measuring adaptability is stronger.
Description
Technical Field
The invention relates to the technical field of automobile measurement, in particular to automobile part measurement equipment for small-diameter hole grooves.
Background
Many small-diameter hole grooves exist in automobile parts, and the small-diameter hole grooves are required to be measured to ensure machining precision, and at present, common small-hole grooves are measured by adopting equipment such as an inner caliper.
However, because the aperture is smaller and deeper, during general measurement, the common equipment can only measure the aperture of the local area of the port position, and is difficult to effectively measure the part which is deep inside, and in order to ensure the installation accuracy, the aperture measurement is usually required to be carried out on each point with different depths, after the existing equipment is deep, the stability of the existing equipment is reduced, and after the measurement is finished, the equipment is taken out, the equipment is easy to collide due to longer distance, so that the measured data is influenced, the accuracy and the reliability of the measured data are greatly reduced, and when the tapered hole is faced, the effective and accurate measurement is difficult to carry out, so that more inconvenience exists in the measurement of the small-diameter deep hole.
Disclosure of Invention
The invention aims to solve the problems of unchanged measurement and inaccurate numerical value in the prior art, and provides automobile part measurement equipment for small-diameter hole slots.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the automobile part measuring equipment for the small-diameter hole groove comprises a control box and a detection sleeve, wherein a power supply and power control assembly is arranged in the control box, a supply mechanism is arranged on the side wall of the control box, a field adding mechanism is arranged on the side wall of the detection sleeve, the supply mechanism consists of an electrostatic emission rod, a detection head, a head wiring, an electric field wiring, a magnetic field wiring and a liquid injection pipe, and the field adding mechanism consists of two symmetrical electric field plates and a group of magnetic field coils;
the static electricity transmitting rod is inserted into the detecting head and used for transmitting static electricity to the inside of the detecting head, the head wiring, the electric field wiring and the magnetic field wiring are respectively connected with the detecting head, the electric field plate and the magnetic field coil and used for supplying power through wiring, and the liquid filling pipe is communicated with the inside of the detecting sleeve and used for supplying filling liquid.
The inner wall of the detecting head is fixedly provided with a pressure plate, the side wall of the pressure plate is provided with an electric field pressure sensor, a detection ball capable of rolling is placed in the detecting head, the detection ball is a solid metal ball, static charge emitted by the static emission rod is used for enabling the detection ball to be electrified, the side wall of the detecting head is fixedly provided with a zeroing plate, the zeroing plate is used for guiding out redundant charge, the inner wall of the detecting head is fixedly provided with a collision box, the inner wall of the collision box is in sealing sliding connection with a collision block, the collision block and the side wall of the collision box are jointly fixedly provided with a reset spring, the side wall of the collision box is penetrated and provided with a stabilizing groove, the bottom of the collision box is fixedly provided with a magnetic field pressure sensor, and the inside of the collision box is filled with electrorheological fluid.
In the automobile part measuring equipment for the small-diameter hole groove, the filling liquid is used for filling the full detection sleeve, so that the detection sleeve is expanded to be propped against the inner wall of the hole groove to be measured, and electrorheological fluid is used as the filling liquid.
Compared with the prior art, the invention has the advantages that:
1. after the electrorheological fluid is electrified, the electrorheological fluid is solidified, and the probe sleeve can be fully attached to the inner wall of the hole groove along with remarkable expansion, then the probe sleeve is taken out, and the inner size of the hole groove is re-carved by the probe sleeve, so that the size of the hole groove to be measured can be obtained by directly measuring the outer size of the probe sleeve;
2. when facing some hole slots with relatively higher precision and smaller error, the size can be intuitively and rapidly obtained, so that the measurement is more convenient, particularly when facing some conical hole slots, the measurement can be very rapidly completed, the labor intensity of measurement personnel is greatly reduced, the measurement personal error is smaller, and the measurement data is more accurate and reliable;
3. by applying a uniform strong electric field and charging the detection ball, the electric field force F generated when the electric charge quantity is Q can be obtained, so that the applied electric field strength E can be calculated, the distance d between the electric field plates can be easily calculated by the known power supply voltage U, the required measured value is obtained, the accuracy of the measured value is high, the measuring process is not limited by the internal structure shape of the hole groove, and the measuring adaptability is stronger;
4. after the measurement is finished, the two electric field plates can be reversely powered, so that the generated electric field strength direction is exchanged, the detection ball reversely rolls under the action of electric field force and is further transferred to one side of the zeroing plate so as to be in contact with the zeroing plate, and further, redundant charges on the detection ball are led out for zeroing, so that the subsequent measurement of the detection ball is not influenced;
5. through the externally applied magnetic field, the Lorentz force applied to the detection ball is combined, the magnetic field intensity B of the position of the detection ball can be obtained easily, the distance between the detection ball and the magnetic field coil can be obtained by combining the inverse relation between the distance and the magnetic field intensity, and then the required measuring distance is obtained through conversion, so that the effective measurement can be completed under the condition of externally applying an electric field at the equipment body.
Drawings
FIG. 1 is a schematic diagram of an automobile part measuring apparatus for small diameter hole slots according to the present invention;
FIG. 2 is a schematic view of an automotive part measuring apparatus for small diameter hole slots according to another view of the present invention;
FIG. 3 is a side cross-sectional view of an auto part measurement apparatus for small diameter hole slots in accordance with the present invention;
FIG. 4 is a side cross-sectional view of another view of an auto part measurement apparatus for small diameter hole slots in accordance with the present invention;
FIG. 5 is a half cross-sectional view of an auto part measurement apparatus for small diameter hole slots according to the present invention;
FIG. 6 is a half cross-sectional view of a probe portion of an automotive part measurement apparatus for small diameter bore slots in accordance with the present invention;
FIG. 7 is a side cross-sectional view of a probe portion of an automotive part measurement apparatus for small diameter bore slots in accordance with the present invention;
FIG. 8 is a schematic view of the structure of an electric field plate of an automotive part measuring apparatus for small diameter hole slots according to the present invention;
FIG. 9 is a schematic diagram of a magnetic field coil of an automotive part measuring apparatus for small diameter hole slots according to the present invention;
fig. 10 is a cross-sectional view of a crash box of an automobile part measuring apparatus for a small-diameter hole groove according to the present invention.
In the figure: 1 a control box, 11 an electrostatic emission rod, 12 a detector head, 13 a head wiring, 14 an electric field wiring, 15 a magnetic field wiring, 16 a liquid injection pipe, 2 a detection sleeve, 21 an electric field plate, 22 a magnetic field coil, 3 a pressure plate, 31 an electric field pressure sensor, 32 a detection ball, 33 a zero resetting plate, 4 a collision box, 41 a collision block, 42 a reset spring, 43 a stabilizing groove and 44 a magnetic field pressure sensor.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1 to 10, an automobile part measuring device for small diameter hole slots comprises a control box 1 and a detection sleeve 2, wherein a power supply and a power control component are arranged in the control box 1, the power supply is used for supplying power, the power control component is used for controlling on-off power and power supply intensity, a computing device is also arranged in the control box 1 and used for computing measured values to give out final measurement results, a feeding mechanism is arranged on the side wall of the control box 1, a field adding mechanism is arranged on the side wall of the detection sleeve 2 and consists of an electrostatic transmitting rod 11, a detection head 12, a head wiring 13, an electric field wiring 14, a magnetic field wiring 15 and a liquid injection pipe 16, the field adding mechanism consists of two symmetrical electric field plates 21 and a group of magnetic field coils 22, and the two symmetrical electric field plates 21 form a stable uniform electric field after being electrified, so that stable stress and detection are facilitated, and the magnetic field coils 22 apply a magnetic field to the interior of the detection sleeve 2;
the electrostatic transmitting rod 11 is inserted into the detecting head 12 for transmitting electrostatic charge to the interior of the detecting head 12, and the head wiring 13, the electric field wiring 14 and the magnetic field wiring 15 are respectively connected with the detecting head 12, the electric field plate 21 and the magnetic field coil 22 for supplying power by wiring, and the liquid filling pipe 16 is communicated with the interior of the detecting sleeve 2 for supplying filling liquid.
The filling liquid is used for filling and filling the detection sleeve 2, so that the detection sleeve 2 is expanded to be propped against the inner wall of a hole to be detected, the filling liquid is selected to be electrorheological liquid, when the inner diameter of the hole is measured, the collapsed detection sleeve 2 is plugged into the hole, then the electrorheological liquid is filled into the detection sleeve 2 through the liquid filling pipe 16, the electrorheological liquid flows to fill the detection sleeve 2, so that the detection sleeve 2 is bulged and then is attached to the inner wall of the hole, then the electrorheological liquid is supplied with power, the electrorheological liquid is solidified after being electrified, and is obviously expanded, the detection sleeve 2 can be fully attached to the inner wall of the hole, then the detection sleeve 2 is taken out, at the moment, the inner dimension of the hole to be detected can be obtained by directly measuring the outer dimension of the detection sleeve 2, and when the hole to be detected is relatively high in face of certain precision, the dimension can be intuitively and rapidly obtained when the hole to be small in face of small error, so that the measurement is more convenient, especially when the hole to face a taper hole is formed, the measurement can be completed very fast, the labor intensity of a measurer is greatly reduced, the measurement error is relatively small, and the measurement data is more accurate and the measurement data is more reliable.
The inner wall of the detecting head 12 is fixed with a pressure plate 3, the side wall of the pressure plate 3 is provided with an electric field pressure sensor 31, a detecting ball 32 capable of rolling is arranged in the detecting head 12, the detecting ball 32 is stressed to be in contact with the electric field pressure sensor 31, and extrusion is generated, so that the electric field pressure sensor 31 sends out a pressure signal to the outside.
The detection ball 32 is a solid metal ball, the static charge emitted by the static emission rod 11 charges the detection ball 32, when the size error is larger and the shaped detection sleeve 2 formed by the expansion of the electrorheological fluid cannot be taken out easily for measurement, electrons can be emitted to the detection ball 32 through the static emission rod 11, so that the detection ball 32 becomes a charged ball, and simultaneously, the electric field plates 21 are electrified, so that the two electric field plates 21 form a stable uniform electric field, and the charged detection ball 32 is positioned in the uniform electric field;
according to coulomb law, charged particles will be subjected to the action of an electric field force in an electric field, and the action force formula is: f=qe;
wherein:
f is the electric field force;
q is charge quantity;
e is the electric field strength;
the relationship between the magnitude of the uniform electric field intensity generated between the two electric field plates 21 and the power supply voltage is: u=ed;
wherein:
u is the potential difference, namely the power supply voltage;
e is the strength of the generated electric field;
d is the spacing between the two electric field plates 21;
during measurement, the two electric field plates 21 are propped against the inner wall of the hole groove to be measured, and the two electric field plates 21 are symmetrically arranged, so that the distance d between the two electric field plates 21 is the hole groove inner diameter value to be measured, and the charge quantity carried by the detection ball 32 is determined by the emission quantity of the electrostatic emission rod 11, so that the charge quantity Q is controllable;
the electric field force F received by the detecting ball 32 will cause the detecting ball 32 to have a movement trend, and then the acting force is transferred to the electric field pressure sensor 31, so that the electric field pressure sensor 31 outputs a real-time pressure value outwards, a trigger pressure value is set, when the pressure value reaches, the electrostatic transmitting rod 11 stops supplying electric charge, so that the acting force is not continuously increased, when the electric charge quantity is Q, the generated electric field force F can be obtained, the applied electric field intensity E can be calculated, and then the distance d between the electric field plates 21 can be easily calculated by the known power supply voltage U, so that the required measured value is obtained, the accuracy of the measured value is high, the measuring process is not limited by the internal structure shape of the hole groove, and the measuring adaptability is stronger;
the side wall of the probe 12 is fixed with a zeroing plate 33, the zeroing plate 33 is used for guiding out redundant charges, the zeroing plate 33 is connected with a ground wire through a wire, so after measurement is finished, the two electric field plates 21 can be reversely powered, the generated electric field strength direction is changed, the probe ball 32 is reversely rolled under the action of electric field force, and then is transferred to one side of the zeroing plate 33, so that the probe ball is contacted with the zeroing plate 33, and the redundant charges on the probe ball 32 are guided out and zeroed, so that the subsequent measurement of the probe ball 32 is not affected.
The inner wall of the detection head 12 is fixedly provided with a collision box 4, the inner wall of the collision box 4 is in sealed sliding connection with a collision block 41, the collision block 41 and the side wall of the collision box 4 are jointly fixedly provided with a return spring 42, the side wall of the collision box 4 is penetrated and provided with a stabilizing groove 43, the bottom of the collision box 4 is fixedly provided with a magnetic field pressure sensor 44, and the interior of the collision box 4 is filled with electrorheological fluid;
at the moment of electrifying the electrorheological fluid in the collision box 4, the electrorheological fluid is solidified instantaneously and expands, so that the collision block 41 is impacted to move rapidly, the collision block 41 collides with the pressure plate 3, the pressure plate 3 deforms slightly, and the acting force is transferred to the detection ball 32, so that the detection ball 32 is impacted to spring open, and the rolling can be realized;
when the measured hole slot equipment is immovable and is in an environment with an external unknown electric field, the uniform and strong electric field applied by the electric field plate 21 is disturbed, so that an electric field intensity measurement formula cannot be applied, in this state, power can be supplied to the magnetic field coil 22 to generate a magnetic field, the strength of the magnetic field is related to the power supply intensity and the distance from the magnetic field coil 22, the strength of the magnetic field is in direct proportion to the power supply intensity and in inverse proportion to the distance, and the charged detection ball 32 is in the magnetic field and moves due to collision, and the movement direction is perpendicular to the magnetic field direction, so that the lorentz force acts on the magnetic field pressure sensor 44, and in the movement process of the detection ball 32, the lorentz force applies additional acting force on the magnetic field pressure sensor 44 to output a pressure value;
the acting force formula is as follows: f= QVB;
wherein:
f is Lorentz force;
q is the charge quantity;
v is the movement speed;
b is the magnetic field intensity of the position;
wherein, F is measurable, namely the output pressure of the magnetic field pressure sensor 44 minus the dead weight of the detection ball 32, Q is known, namely the supplied charge amount of the electrostatic emission rod 11, and the movement speed after collision can be measured in advance under the condition of consistent collision strength, so V is also known, under the condition, the magnetic field strength B can be easily obtained, the distance between the detection ball 32 and the magnetic field coil 22 can be obtained by combining the inverse relation between the distance and the magnetic field strength, and the required measurement distance can be obtained by conversion, thereby the effective measurement can be completed under the condition of externally applying an electric field at the equipment body.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (2)
1. The automobile part measuring equipment for the small-diameter hole groove comprises a control box (1) and a detection sleeve (2), wherein a power supply and power control assembly is arranged in the control box (1), and the automobile part measuring equipment is characterized in that a feeding mechanism is arranged on the side wall of the control box (1), a field adding mechanism is arranged on the side wall of the detection sleeve (2), the feeding mechanism consists of an electrostatic emission rod (11), a detection head (12), a head wiring (13), an electric field wiring (14), a magnetic field wiring (15) and a liquid injection pipe (16), and the field adding mechanism consists of two symmetrical electric field plates (21) and a group of magnetic field coils (22);
the electrostatic emission rod (11) is inserted into the detection head (12) and used for emitting electrostatic charges into the detection head (12), the head wiring (13), the electric field wiring (14) and the magnetic field wiring (15) are respectively connected with the detection head (12), the electric field plate (21) and the magnetic field coil (22) and used for supplying power through wiring, and the liquid injection pipe (16) is communicated with the interior of the detection sleeve (2) and used for supplying filling liquid;
the utility model discloses a high-precision electric field sensor, including detecting head (12), electric field pressure sensor (31) are installed to the inner wall of detecting head (12), but electric field pressure sensor (31) are installed to the lateral wall of pressure board (3), but rolling detection ball (32) are placed to the inside of detecting head (12), detection ball (32) are solid metal ball, static charge that static emission stick (11) launched will make detection ball (32) electrified, the lateral wall of detecting head (12) is fixed with return-to-zero board (33), return-to-zero board (33) are used for deriving unnecessary electric charge, the inner wall of detecting head (12) is fixed with collision box (4), the inner wall sealing sliding connection of collision box (4) has collision piece (41), collision piece (41) are fixed with reset spring (42) jointly with the lateral wall of collision box (4), the lateral wall of collision box (4) runs through and has seted up stable groove (43), the bottom of collision box (4) is fixed with magnetic field pressure sensor (44), the inside of collision box (4) is filled with electric current transformer liquid.
2. The automobile part measuring device for small-diameter hole slots according to claim 1, wherein the filling liquid is used for filling the full-expansion detection sleeve (2) so that the detection sleeve (2) expands to be propped against the inner wall of the hole slot to be measured, and the filling liquid is electrorheological liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310062946.XA CN115808115B (en) | 2023-01-13 | 2023-01-13 | Automobile part measuring equipment for small-diameter hole groove |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310062946.XA CN115808115B (en) | 2023-01-13 | 2023-01-13 | Automobile part measuring equipment for small-diameter hole groove |
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| CN115808115A CN115808115A (en) | 2023-03-17 |
| CN115808115B true CN115808115B (en) | 2023-05-23 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5493127A (en) * | 1994-12-20 | 1996-02-20 | Michigan State University | Feedback control of electrorheological fluid response |
| SE517293C2 (en) * | 1999-06-30 | 2002-05-21 | Abb Ab | Method and apparatus for inductive measurement of geometric dimension and electrical property with opposite magnetic fields |
| CN107727947B (en) * | 2017-09-30 | 2019-12-10 | 南京航空航天大学 | Device for detecting DC electric field intensity by using electrorheological fluid |
| JP2022092848A (en) * | 2020-12-11 | 2022-06-23 | 株式会社ミツトヨ | Probe and measuring device |
| CN113566749B (en) * | 2021-09-27 | 2021-12-03 | 江苏烨全汽车零部件有限公司 | Automobile pipe fitting pipe diameter detection device |
| CN114353710B (en) * | 2021-12-27 | 2024-04-12 | 海澜智云科技有限公司 | Industrial intelligent detection platform |
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