Electromagnet magnetic core tube thread detection equipment

Abstract

An electromagnet magnetic core tube thread detection device comprises a machine table, a numerical control linear module in the left-right direction is fixedly installed on the machine table, a mounting plate is fixedly connected to a moving part of the linear module, a guide rail in the front-back direction is fixedly connected to the mounting plate, a sliding block is matched with the guide rail in a front-back sliding mode, and a servo motor is fixedly connected to the sliding block. A sliding table air cylinder is fixedly installed on the rear side of the servo motor, a front magnetic switch and a rear magnetic switch are arranged on the sliding table air cylinder, a thread ring gauge tool is fixedly connected to an output shaft of the servo motor, and a thread ring gauge is installed on the thread ring gauge tool. A square clamping tool used for fixing a magnetic core tube is fixedly installed on the machine table in front of the linear module, an inductor is fixedly installed on the sliding block, and a position induction switch inducting the inductor is installed on the machine table. The device can replace manpower to detect the end thread of the magnetic core tube, and manpower is saved.

Description

Technical Field

[0001] This utility model relates to electromagnet production equipment, and in particular to an electromagnet core tube thread testing device, belonging to the field of electromechanical technology. Background Technology

[0002] Electromagnets are widely used in hydraulic machinery. Specifically, in the use of hydraulic machinery, the corresponding accessories on the hydraulic host are connected by screws or threads. The threaded connection requires the accessory to be screwed together with the thread on the magnetic core tube. Therefore, in the production of electromagnets, the threads on the magnetic core tube are required to be fully inspected. The traditional inspection method is to manually inspect each piece with a thread ring gauge. Due to the large size and quantity of products, manual inspection is labor-intensive, prone to omissions, and can easily damage the appearance of the product, resulting in low efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the thread detection of magnetic core tubes in the prior art, and to provide a thread detection device for electromagnet core tubes.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: An electromagnet core pipe thread testing device includes a machine base, on which a CNC linear module in the left-right direction is fixedly installed. A mounting plate is fixedly connected to the moving part of the linear module, and a guide rail in the front-back direction is fixedly connected to the mounting plate. A slider slides back and forth on the guide rail. A servo motor is fixedly connected to the slider. A slide cylinder is fixedly installed behind the servo motor. A front magnetic switch and a rear magnetic switch are configured on the slide cylinder. The servo motor can move back and forth along the guide rail driven by the slide cylinder. A thread ring gauge fixture is fixedly connected to the output shaft of the servo motor. The thread ring gauge is installed on the thread ring gauge fixture. A device for fixing the magnetic core is fixedly installed on the machine base in front of the linear module. The tube squaring fixture includes a support surface, with a vertical plate integrally formed at the rear end of the support surface. Multiple slots are formed on the vertical plate, distributed horizontally. These slots are adapted to the squaring mechanism on the magnetic core tube. After the squaring part of the magnetic core tube is positioned within the slot, the magnetic core tube is limited in both directions. The threaded end of the magnetic core tube faces the linear module, and the tube body is supported on the support surface. A sensor is fixedly mounted on the slider. A position sensor switch that senses the sensor is installed on the machine base. When a threaded ring gauge is screwed onto the thread of the magnetic core tube to a set length, the sensor and the position sensor switch are activated. The linear module, slide cylinder, servo motor, front and rear magnetic switches, and position sensor switch are all connected to a controller.

[0005] Furthermore, the threaded ring gauge fixture is coaxially and fixedly connected to the output shaft of the servo motor. The threaded ring gauge fixture has a mounting hole at its center, and the diameter of the mounting hole differs from the diameter of the threaded ring gauge by 20-40 microns. The threaded ring gauge fixture has two threaded holes. A flange is integrally connected to the front end face of the threaded ring gauge, and a mounting hole corresponding to the threaded hole is opened on the flange. After the bolt passes through the mounting hole, it is screwed into the threaded hole to limit the front and rear movement of the threaded ring gauge. When the threaded ring gauge is subjected to radial force, it can move radially within the gap range between the threaded ring gauge and the mounting hole.

[0006] Furthermore, a sleeve is fixedly connected to the cylinder rod of the slide cylinder, a rear limiting plate is fitted on the cylinder rod at the front end of the sleeve, a spring is threaded through the cylinder rod in front of the rear limiting plate, a connecting plate is fixedly connected to the slider, a through hole is opened on the connecting plate, a threaded part is machined at the front end of the cylinder rod of the slide cylinder, a nut is screwed onto the threaded part after the front part of the cylinder rod of the slide cylinder passes through the through hole for limitation, and the front end and rear end of the spring are limited by the connecting plate and the rear limiting plate respectively.

[0007] Furthermore, the vertical plate has 10-15 opening slots.

[0008] Furthermore, the aforementioned CNC linear module adopts a belt-driven module.

[0009] The positive and beneficial technical effects of this utility model are as follows: This equipment can replace manual labor to detect the thread at the end of the magnetic core tube, saving labor and improving the detection quality. The specific implementation method will be described in detail below. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the present invention.

[0011] Figure 2 This is a schematic diagram of a servo motor driven by a slide cylinder moving back and forth.

[0012] Figure 3 This is a schematic diagram of a magnetic core tube. Detailed Implementation

[0013] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0014] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: machine base; 2: belt module; 3: mounting plate; 4: slide cylinder; 5: servo motor; 6: thread ring gauge tooling; 7: thread ring gauge; 8: bolt; 9: support surface; 10: vertical plate; 11: opening groove; 12: magnetic core tube; 13: guide rail; 14: slider; 15: cylinder rod; 16: sleeve; 17: rear limit plate; 18: spring; 19: connecting plate; 20: nut; 21: square clamping tooling; 1201: square clamping; 1201: tube body; 1203: threaded end.

[0015] Figure 1 The components shown are for illustrative purposes only and are not drawn to scale according to the actual equipment.

[0016] An electromagnet core pipe thread testing device includes a machine base 1. A CNC linear module in the left-right direction is fixedly installed on the machine base. In this invention, the CNC linear module adopts a belt module 2. A mounting plate 3 is fixedly connected to the moving part of the linear module. A guide rail 13 in the front-back direction is fixedly connected to the mounting plate 3. A slider 14 slides back and forth on the guide rail. A servo motor 5 is fixedly connected to the slider 14. A slide cylinder 4 is fixedly installed on the rear side of the servo motor. The slide cylinder is equipped with a front magnetic switch and a rear magnetic switch. The servo motor 5 is driven by the slide cylinder to move along the guide rail. In this embodiment, a sleeve 16 is fixedly connected to the cylinder rod 15 of the slide cylinder. A rear limiting piece 17 is fitted onto the cylinder rod at the front end of the sleeve. The rear limiting piece 16 can abut against or be fixedly connected to the sleeve. A spring 18 is threaded through the cylinder rod in front of the rear limiting piece. A connecting plate 19 is fixedly connected to the slider 14. A through hole is provided on the connecting plate 19. A threaded part is machined at the front end of the cylinder rod 15 of the slide cylinder. After the front part of the cylinder rod of the slide cylinder passes through the through hole, a nut 20 is screwed onto the threaded part for limitation. The front end and rear end of the spring are limited by the connecting plate and the rear limiting piece, respectively. This method is a relatively optimized approach, employing a spring. Because the cylinder moves very fast, when the cylinder drives the cylinder rod forward, it compresses the spring to store energy. The front end of the cylinder rod slides forward relative to the perforated part. When the cylinder is de-energized, the stored energy of the spring pushes the connecting plate forward to achieve the initial screwing of the threaded ring gauge and the threaded end of the magnetic core tube. Because the spring's forward pushing force is flexible, it will not cause damage to the threads. After the threaded ring gauge is screwed into the threads, the servo motor will move forward under the drive of the magnetic core tube. If the spring still has elasticity (when the connecting plate and nut 20 are not in contact, the forward movement of the servo motor will not drive the cylinder rod forward), it will not affect its forward movement. When the connecting plate contacts the nut 20, the magnetic core tube drives the servo motor to move forward, causing the cylinder rod 15 to move together. When the thread is moved to the sensor and the position switch is activated, it is confirmed that the thread is qualified. During the test, the servo motor uses torque mode, which is a built-in function of the servo motor. A torque is set for the thread to be qualified. When the thread is unqualified, the torque will exceed the limit. When the excessive torque is detected, the servo motor reverses and returns. At this time, the sensor and the position switch will not be activated, which proves that the thread is unqualified.

[0017] A threaded ring gauge fixture 6 is fixedly connected to the output shaft of the servo motor. A threaded ring gauge 7 is mounted on the threaded ring gauge fixture. In this embodiment, the threaded ring gauge fixture is coaxially fixedly connected to the output shaft of the servo motor. The threaded ring gauge fixture has a mounting hole at its center. The diameter of the mounting hole differs from the diameter of the threaded ring gauge by 20-40 microns. The threaded ring gauge fixture has two threaded holes. A flange is integrally connected to the front end face of the threaded ring gauge. The flange has mounting holes corresponding to the threaded holes. After the bolt passes through the mounting hole, it is screwed into the threaded hole to limit the front and rear movement of the threaded ring gauge. When the threaded ring gauge is subjected to radial force, it can move radially within the gap range between the threaded ring gauge and the mounting hole. This installation method is to adapt to the error in the correspondence between the threaded ring gauge and the thread end axis during operation. The threaded ring gauge and the thread end are well matched through the small movement of the threaded ring gauge.

[0018] A clamping fixture 21 for fixing the magnetic core tube is fixedly installed on the machine base in front of the linear module. The clamping fixture includes a support surface 9, and a vertical plate 10 is integrally provided at the rear end of the support surface. The vertical plate 10 has multiple opening slots 11, which are distributed in the left and right directions. In this embodiment, 10-15 opening slots are provided on the vertical plate. The opening slots are adapted to the clamping fixture 1201 on the magnetic core tube. The clamping fixture is an existing structure on the magnetic core tube. After the clamping fixture 15 on the magnetic core tube is positioned in the opening slot, the magnetic core tube is limited in front and back. The threaded end 1203 of the magnetic core tube faces the direction of the linear module. The tube body 1202 of the magnetic core tube is supported on the support surface 9. A sensor is fixedly installed on the slider. A position sensing switch that senses the sensor is installed on the machine base. When the threaded ring gauge is screwed onto the thread on the magnetic core tube to a set length, the sensor senses the position sensing switch. The linear module, the slide cylinder, the servo motor, the front magnetic switch, the rear magnetic switch, and the position sensing switch are all connected to the controller for control.

[0019] The working principle of this equipment is as follows: The magnetic core tubes are placed onto the square fixture in sequence by the operator. After pressing the start button, the equipment starts running. The belt module motor rotates, and the belt module connecting plate moves the connected threaded ring gauge to the first station with the set coordinates. The slide cylinder pushes the connected threaded ring gauge forward. The cylinder is equipped with front and rear magnetic switches. After the front magnetic switch at the rear of the cylinder lights up, the cylinder is cut off. The motor drives the threaded ring gauge to start rotating. The spring drives the servo motor forward to screw the threaded ring gauge into the thread. Driven by the magnetic core tube, the servo motor moves forward. When the connecting plate contacts the nut 20, the magnetic core tube drives the servo motor to move forward, which in turn drives the cylinder rod 15 to move together. When the workpiece is moved to the sensor and the position switch is activated, it indicates that the thread of the workpiece is qualified. The motor drives the thread ring gauge to start reversing. The number of reverse rotations is the same as the number of forward rotations. When the set number of rotations is reached, the thread ring gauge disengages from the workpiece, the cylinder front end is reset, the rear magnetic switch lights up, and the magnetic core tube on one station (open slot) is inspected. Then the belt module moves to the next workpiece according to the set coordinates. The above actions are repeated until all workpieces are inspected.

[0020] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. An electromagnet core pipe thread testing device, comprising a machine base, characterized in that: A CNC linear module with a left-right orientation is fixedly mounted on the machine base. A mounting plate is fixedly connected to the moving parts of the linear module, and a front-back guide rail is fixedly connected to the mounting plate. The slider slides back and forth on the guide rail. A servo motor is fixedly connected to the slider. A slide cylinder is fixedly mounted on the rear side of the servo motor. The slide cylinder is equipped with a front magnetic switch and a rear magnetic switch. The servo motor can move back and forth along the guide rail driven by the slide cylinder. A threaded ring gauge fixture is fixedly connected to the output shaft of the servo motor. The threaded ring gauge is mounted on the threaded ring gauge fixture. A clamping fixture for fixing the magnetic core tube is fixedly mounted on the machine base in front of the linear module. The clamping fixture includes a support surface and a support... A vertical plate is integrally set at the rear end of the support surface. Multiple slots are opened on the vertical plate, which are distributed in the left and right direction. The slots are adapted to the square part on the magnetic core tube. After the square part on the magnetic core tube is positioned in the slot, the magnetic core tube is limited in front and behind. The threaded end of the magnetic core tube faces the direction of the linear module. The tube body is supported on the support surface. A sensor is fixedly installed on the slider. A position sensing switch that senses the sensor is installed on the machine. When the threaded ring gauge is screwed onto the thread on the magnetic core tube to a set length, the sensor senses the position sensing switch. The linear module, slide cylinder, servo motor, front magnetic switch, rear magnetic switch, and position sensing switch are all connected to the controller for control.

2. The electromagnet core pipe thread testing device according to claim 1, characterized in that: The threaded ring gauge fixture is coaxially and fixedly connected to the output shaft of the servo motor. The center of the threaded ring gauge fixture has a mounting hole, the diameter of which differs from the diameter of the threaded ring gauge by 20-40 microns. The threaded ring gauge fixture has two threaded holes. A flange is integrally connected to the front end face of the threaded ring gauge, and the flange has mounting holes corresponding to the threaded holes. After the bolt passes through the mounting hole, it is screwed into the threaded hole to limit the front and rear movement of the threaded ring gauge. When the threaded ring gauge is subjected to radial force, it can move radially within the gap range between the threaded ring gauge and the mounting hole.

3. The electromagnet core pipe thread testing device according to claim 1, characterized in that: A sleeve is fixedly connected to the cylinder rod of the slide cylinder. A rear limiting plate is fitted on the cylinder rod at the front end of the sleeve. A spring is threaded through the cylinder rod in front of the rear limiting plate. A connecting plate is fixedly connected to the slide. A through hole is opened on the connecting plate. A threaded part is machined at the front end of the cylinder rod of the slide cylinder. After the front part of the cylinder rod of the slide cylinder passes through the through hole, a nut is screwed onto the threaded part for limiting. The front end and rear end of the spring are limited by the connecting plate and the rear limiting plate, respectively.

4. The electromagnet core pipe thread testing device according to claim 1, characterized in that: The vertical plate has 10-15 opening slots.

5. The electromagnet core pipe thread testing device according to claim 1, characterized in that: The aforementioned CNC linear module adopts a belt module.

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