CN112034403A - A high-precision electromagnet suction test device - Google Patents

Abstract

The invention discloses a high-precision electromagnet suction test device, comprising an installation platform, a test mechanism and a console are arranged on the installation platform, and the test mechanism includes a sliding table lifting table, a sliding table fixing seat, a transmission device, a displacement testing device and a testing device. The test piece fixing device is used to fix the electromagnet to be tested; the sliding table fixing base is provided with a vertically arranged sliding rail, and the sliding table lifting table is provided with a sliding groove, and the sliding groove on the sliding table lifting table is connected with the sliding table. The sliding rails on the table fixing seat are matched with clearance; the transmission device can drive the sliding table lifting table to move up and down; the sliding table lifting table is provided with a force measuring device, and the force measuring device is located directly above the test piece fixing device; the force measuring device is used to measure the electromagnetic The size of the iron suction, the displacement test device is used to measure the stroke of the sliding table lifting table, and the transmission device and the force measuring device are connected with the console. The invention has simple structure and convenient operation, can draw the relation curve between the magnetic force and the displacement of the electromagnet in real time, and can greatly improve the measurement precision and the measurement efficiency.

Description

A high-precision electromagnet suction test device

technical field

The invention relates to the technical field of electromagnet performance testing devices, in particular to a high-precision electromagnet testing device.

Background technique

In recent years, with the rapid development of modern science and technology, electromagnets have become more and more widely used in aerospace, automotive electronics, machinery manufacturing and other fields. For the detection of electromagnet performance, multiple sets of instruments are often required, the operation steps are numerous, and a lot of manpower is required. At the same time, for the measurement of electromagnet performance, most of them are measured by means of weights, spring scales and other devices. This measurement method cannot obtain the change of the electromagnet's magnetic force and displacement during the whole process of the electromagnet from power-on to power-off. Low accuracy and low measurement efficiency.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides an electromagnet suction test device with a simple structure and convenient operation, which can draw the relationship between the magnetic force and the displacement of the electromagnet in real time, and can greatly improve the measurement accuracy and measurement efficiency.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A high-precision electromagnet suction test device, comprising an installation platform, a test mechanism and a console are arranged on the installation platform, and the test mechanism includes a sliding table lifting table, a sliding table fixing seat, a transmission device, a displacement testing device and a test piece fixing device; The test piece fixing device is used for fixing the electromagnet to be tested;

The sliding table fixing seat is fixedly installed on the installation platform, the sliding table fixing seat is provided with a vertically arranged sliding rail, the sliding table lifting table is provided with a sliding groove, and the sliding groove on the sliding table lifting table is connected with the sliding table. The sliding rails on the fixed seat of the sliding table are in clearance fit; the transmission device can drive the sliding table lifting table to move up and down; the sliding table lifting table is provided with a force measuring device, and the force measuring device is located just above the test piece fixing device; The force measuring device is used to measure the suction force of the electromagnet, and the displacement testing device is used to measure the stroke of the sliding table lifting platform. The transmission device, the force measuring device and the displacement testing device are connected with the console.

In the above-mentioned high-precision electromagnet suction test device, the transmission device includes a stepper motor and a screw rod; the output shaft of the stepper motor is connected with the screw rod; The threaded hole is screwed, and the stepper motor is connected with the console.

In the above-mentioned high-precision electromagnet suction test device, the force measuring device includes a connecting rod, a pressure sensor and a measuring rod, the upper end of the connecting rod is screwed with the sliding table worktable, and the sliding table worktable is fixedly installed on the sliding table lifting platform. The lower end of the connecting rod is screwed with the upper end of the pressure sensor, the lower end of the pressure sensor is screwed with the measuring rod, and the measuring rod is located just above the electromagnet to be measured; the pressure sensor is connected with the console.

In the above-mentioned high-precision electromagnet suction test device, a plurality of threaded pipes are welded to the bottom of the installation platform, and the threaded pipes are arranged vertically; each of the threaded pipes is screwed with a support frame.

In the above-mentioned high-precision electromagnet suction test device, the specimen fixing device includes a positioning seat, a pressing device seat and a pressing device; the positioning seat is installed on the installation platform, and two pressing devices are symmetrically installed on the positioning seat. Device seat; two pressing device seats are located on both sides of the measuring rod, each pressing device seat is installed with a pressing device, and the two pressing devices are coaxial to realize the pressing of the electromagnet to be measured.

In the above-mentioned high-precision electromagnet suction test device, the sliding table fixing base includes a bottom plate and two guide plates, the two guide plates are arranged in parallel and perpendicular to the bottom plate; the opposite end faces of the two guide plates are provided with slide rails; The sliding platform lifting platform is U-shaped, the two side plates of the sliding platform lifting platform are sleeved on the outside of the two guide plates of the base, and the two side plates of the sliding platform lifting platform are opposite to each other. Corresponding slide rail clearance fit.

In the above-mentioned high-precision electromagnet suction test device, the displacement sensor induction block, the displacement sensor, and the displacement sensor mounting seat are connected with the sliding table workbench or the sliding table lifting platform, and the displacement sensor is fixed on the displacement sensor. On the mounting seat, the displacement sensor mounting seat is fixed on the mounting platform.

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

1. The present invention has the advantages of simple structure, convenient and quick operation, and can greatly improve the product detection efficiency and the economic benefit.

2. The present invention drives the sliding table lifting platform to move up and down through the stepping motor, and then drives the connecting rod, the pressure sensor, and the measuring rod to move up and down. When the electromagnet is energized, a reverse force is formed, and the pressure sensor and the displacement sensor can dynamically Measure the change curve between the magnetic force and displacement of the electromagnet.

3. The pressure sensor of the present invention is placed between the connecting rod and the measuring rod. After the electromagnet is energized, the armature of the electromagnet generates upward pressure, and the pressure sensor accurately obtains the magnitude of the feedback force through the measuring rod, reducing the measurement error.

4. In the product testing process of the present invention, the up and down movement speed of the sliding table lifting platform is controlled by the console, which saves the measurement time and improves the production efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the testing mechanism in the present invention.

FIG. 3 is a schematic diagram of the console in the present invention.

In the figure: 1-installation platform, 2-testing mechanism, 3-console, 2-1 terminal, 2-2 workpiece holder, 2-3 tested workpiece station, 2-4 pressing device seat, 2- 5 measuring rod, 2-6 spring clamp, 2-7 pressure sensor, 2-8 connecting rod, 2-9 slide table, 2-10 stepper motor, 2-11 slide lift table, 2-12 displacement sensor Induction block, 2-13 displacement sensor, 2-14 displacement sensor mounting base, 2-15 sliding table fixing base, 3-1 data output interface, 3-2 heat dissipation area, 3-3 operation area, 3-4 display area, 3-5 Status indication area.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1-2, the present invention includes an installation platform 1, a testing mechanism and a console 3. The bottom of the installation platform 1 is provided with a plurality of threaded pipes, and the threaded pipes are arranged vertically. A support frame is screwed into each threaded pipe, and the height of the installation platform 1 can be adjusted by adjusting the connection length of the thread. The terminal 2 - 1 is arranged on the installation platform 1 , the testing mechanism 2 is located on the left side of the installation platform 1 , and the console 3 is fastened on the right side of the installation platform 1 .

The testing mechanism includes a sliding table working table 2-9, a sliding table lifting table 2-11, a sliding table fixing seat 2-15, a transmission device, a displacement testing device and a specimen fixing device. The test piece fixing device includes a workpiece fixing seat 2-2, a tested workpiece station 2-3, a pressing device seat 2-4 and a pressing device 2-6. The workpiece fixing seat 2-2 is installed on the installation platform 1, and two pressing device seats 2-4 are symmetrically installed on the workpiece fixing seat 2-2, and there is a gap between the two pressing device seats 2-4, that is, The measured workpiece station 2-3 is used to install the to-be-measured electromagnet. A pressing device 2-6 is installed on each pressing device seat 2-4, and the two pressing devices 2-6 are coaxial to realize the clamping and positioning of the electromagnet to be measured. The pressing device 2-6 extends the telescopic rod during the test to press the electromagnet to be tested, so as to prevent the electromagnet to be tested and the electromagnet to be tested from moving during the test process and affect the test accuracy.

The sliding table fixing base 2-15 includes a bottom plate and two guide plates, the bottom plate is fixedly mounted on the installation platform 1, the two guide plates are mounted on the bottom plate, and the two guide plates are arranged in parallel and perpendicular to the bottom plate. Slide rails are provided on the opposite end surfaces of the two guide plates; the sliding platform lifting platform 2-11 is U-shaped, and the two side plates of the sliding platform lifting platform 2-11 are sleeved on the outside of the two guide plates of the base, and the sliding platform The two side plates of the lifting platform 2-11 are provided with sliding grooves on the opposite surfaces, and the sliding grooves cooperate with the corresponding sliding rails in clearance. The sliding table working table 2-9 is fixedly installed on the top of the sliding table lifting table 2-11. The transmission device includes a stepper motor 2-10 and a screw rod; the stepper motor 2-10 is fixedly installed on the sliding table fixing seat 2-15, and the output shaft of the stepper motor 2-10 is connected with the screw rod; the screw rod Vertically arranged, the screw rod is screwed with the threaded holes on the sliding table lifting platform 2-11, and the stepper motor is connected with the console 3. The rotation of the stepping motor 2-10 drives the screw rod to rotate, and the screw rod and the threaded hole cooperate to convert the rotation of the screw rod into the up and down movement of the sliding table lifting table 2-11.

The force measuring device includes a connecting rod 2-8, a pressure sensor 2-7 and a measuring rod 2-5. The upper end of the connecting rod 2-8 is screwed with the slide table 2-9, and the lower end of the connecting rod 2-8 is connected with the pressure The upper end of the sensor 2-7 is screwed, the lower end of the pressure sensor 2-7 is screwed with the measuring rod 2-5, and the measuring rod 2-5 is located directly above the electromagnet to be measured; the pressure sensor 2-7 is connected with the console. The slide table 2-9 drives the pressure sensor 2-7 and the measuring rod 2-5 to move up and down through the connecting rod 2-8. The measuring rod 2-5 moves down until it touches the armature on the electromagnet to be tested. After the electromagnet to be tested is energized, an upward force will be generated, and the change of the force is fed back to the pressure sensor 2-7 through the measuring rod 2-5. The magnitude of the force can be measured and transmitted to the console 3.

The displacement testing device includes a displacement sensor sensing block 2-12, a displacement sensor 2-13 and a displacement sensor mounting seat 2-14. The displacement sensor mounting seat 2-14 is fastened on the installation platform 1, the displacement sensor 2-13 is fastened on the displacement sensor mounting seat 2-14, and the displacement sensor sensing block 2-12 is fastened on the sliding table table 2-9 , can also be installed on the sliding table lifting platform 2-11. During the process of moving up and down, the sliding table lifting table 2-11 drives the sliding table table 2-9 to move up and down, and then drives the displacement sensor sensing block 2-12 to move up and down, and the displacement sensor 2-13 measures its end face and the displacement sensor sensing block. 2-12, so that the moving distance of the sliding table lifting platform 2-11 can be measured. The displacement sensors 2-13 are connected to the console 3 .

As shown in FIG. 2 , the console 3 includes a data output interface 3-1, a heat dissipation area 3-2, an operation area 3-3, a display area 3-4, and a status indication area 3-5. There is a data output interface (USB interface) 3-1 under the side of the console 3 that is convenient for users to copy data. A heat dissipation area (fan) 3-2 for dissipating heat for the console 3 is fixed above the side surface of the console 3 . On the right side of the console 3, an operation area 3-3 is installed with a key switch for controlling the power-on and power-off of the system. The display areas 3-4 are located in the center of the console 3, providing user operation interface and data processing interface. On the left side of the console 3 are evenly distributed operation indication areas 3-5 for prompting the user of the current test state of the device.

The using method of the present invention comprises the steps:

S1, the operating technician puts the electromagnet to be tested into the workpiece position 2-3 of the installation platform 1, and clamps the power cord of the electromagnet to be tested into the terminal 2-1 to ensure the power supply of the electromagnet to be tested. The line contact is firm and reliable.

S2, the operating technician controls the operation of the entire testing system through the operation area 3-3 and the display area 3-4 on the console 3; It indicates that the system is running; the pressing device 2-6 fixed on the pressing device seat 2-4 will pop up automatically, and clamp the electromagnet under test to avoid the movement of the electromagnet under test when it is energized, which will cause measurement errors.

S3, the stepping motor 2-10 drives the sliding table lifting table 2-11 to move down quickly, and then drives the sliding table working table 2-9, connecting rod 2-8, pressure sensor 2-7, measuring rod 2-5 to quickly move down , the displacement sensor 2-13 continuously reads the moving distance of the displacement sensor sensing block 2-12, that is, the distance between the measuring rod 2-5 and the electromagnet to be measured. When the reading distance of the displacement sensor 2-13 is less than 1 mm, The stepping motor 2-10 decelerates, and the measuring rod 2-5 moves slowly, approaching and pre-compressing the electromagnet under test. At this time, the value of the displacement sensor 2-13 is used as the zero point of the displacement of the electromagnet armature.

S4, power on the tested electromagnet, the pressure sensor 2-7 reads the magnetic force value of the electromagnet armature, at the same time, the stepping motor 2-10 drives the sliding table lifting platform 2-11 to move up, and the displacement sensor 2-13 reads the displacement sensor The travel gap of the sensing block 2-12, the real-time dynamic relationship curve between the magnetic force and the displacement of the electromagnet can be displayed in the display area 3-4 at this time. When the pressure sensor 2-7 reads the feedback pressure value of the electromagnet armature as zero, it means that the maximum stroke clearance of the electromagnet to be measured has been reached, and the value of the displacement sensor 2-13 at this time serves as the end point of the displacement of the electromagnet armature. After the test is completed, power off the electromagnet to be tested to prevent the electromagnet to be tested from overheating and damage to the test piece.

S5, the stepper motor 2-10 drives the sliding table lifting table 2-11 to move up quickly, and then drives the sliding table table 2-9, the connecting rod 2-8, the pressure sensor 2-7, the measuring rod 2-5 to move up quickly It stops after a certain distance, so that the user can take out the electromagnet under test and carry out the next product test.

Claims (7)

1. a high-precision electromagnet suction test device is characterized in that: comprise an installation platform, and the installation platform is provided with a test mechanism and a console, and the test mechanism comprises a sliding table lifting platform and a sliding table holder, a transmission device, a displacement test device and a test piece fixing device; the test piece fixing device is used to fix the electromagnet to be tested; The sliding table fixing seat is fixedly installed on the installation platform, the sliding table fixing seat is provided with a vertically arranged sliding rail, the sliding table lifting table is provided with a sliding groove, and the sliding groove on the sliding table lifting table is connected with the sliding table. The sliding rails on the fixed seat of the sliding table are in clearance fit; the transmission device can drive the sliding table lifting table to move up and down; the sliding table lifting table is provided with a force measuring device, and the force measuring device is located just above the test piece fixing device; The force measuring device is used to measure the suction force of the electromagnet, and the displacement testing device is used to measure the stroke of the sliding table lifting platform. The transmission device, the force measuring device and the displacement testing device are connected with the console. 2. The high-precision electromagnet suction test device according to claim 1, wherein the transmission device comprises a stepper motor and a screw rod; the output shaft of the stepper motor is connected with the screw rod; the screw rod is vertically arranged , the screw is screwed with the threaded hole on the sliding table lifting platform, and the stepper motor is connected with the console. 3. The high-precision electromagnet suction force testing device according to claim 1, wherein the force measuring device comprises a connecting rod, a pressure sensor and a measuring rod, and the upper end of the connecting rod is screwed with the sliding table workbench, and the sliding table The worktable is fixedly installed on the sliding table lifting platform; the lower end of the connecting rod is screwed with the upper end of the pressure sensor, the lower end of the pressure sensor is screwed with the measuring rod, and the measuring rod is located just above the electromagnet to be measured; the pressure sensor is connected with the console. 4 . The high-precision electromagnet suction test device according to claim 1 , wherein a plurality of threaded pipes are welded to the bottom of the installation platform, and the threaded pipes are arranged vertically; each of the threaded pipes is connected to a support frame. 5 . screwed. 5 . The high-precision electromagnet suction test device according to claim 3 , wherein the test piece fixing device comprises a positioning seat, a pressing device seat and a pressing device; the positioning seat is installed on the installation platform. 6 . , two pressing device seats are symmetrically installed on the positioning seat; the two pressing device seats are located on both sides of the measuring rod, each pressing device seat is installed with a pressing device, and the two pressing devices are coaxial to realize the electromagnet to be measured. compression. 6. The high-precision electromagnet suction test device according to claim 1, wherein the sliding table fixing base comprises a bottom plate and two guide plates, the two guide plates are arranged in parallel and perpendicular to the bottom plate; The opposite end faces are provided with slide rails; the slide lift platform is U-shaped, the two side plates of the slide lift platform are sleeved on the outside of the two guide plates of the base, and the two side plates of the slide lift platform are opposite to each other. There is a chute on the surface, and the chute is matched with the corresponding slide rail. 7. The high-precision electromagnet suction force testing device according to claim 1, characterized in that: a displacement sensor induction block, a displacement sensor, and a displacement sensor mounting seat, the displacement sensor induction block and the sliding table workbench or the sliding table lifting platform connected, the displacement sensor is fixed on the displacement sensor mounting seat, and the displacement sensor mounting seat is fixed on the mounting platform.

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