Electromagnetic chuck

Abstract

The utility model relates to the field of laser cutting, and specifically provides an electromagnetic chuck, which comprises a pipe clamping assembly, a power assembly is connected to one side of the pipe clamping assembly, and the opposite side is fixed in a fixed support, a magnet mounting seat is connected to the pipe clamping assembly through the fixed support, a rotor magnet is installed on the upper surface of the magnet mounting seat, a grating identification strip is installed at the end face, and the grating identification strip is used in cooperation with a grating code sensor; the grating code sensor is fixed at the bottom of the fixed support and is close to the grating identification strip, an electromagnetic coil is further arranged at the fixed support, and the electromagnetic coil rotates in cooperation with the rotor magnet to detect the real-time position. Compared with the prior art, the utility model can improve the rotation speed and the rotation response speed, simultaneously eliminates the large-diameter gear machining on the old chuck, and reduces the cost of purchasing machines.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting, specifically providing an electromagnetic chuck. Background Technology

[0002] Current laser cutting machine chucks are mainly driven by motors and reducers, resulting in significant vibration from gear transmission and the inability to eliminate backlash. Furthermore, these chucks are generally large, requiring transmission gears with diameters typically exceeding 1000 mm, and sometimes even 2000 mm. Maintaining precision and hardness in the machining of such large gears is extremely costly.

[0003] Improving rotational speed and response speed while reducing the cost of purchasing machinery is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] This utility model addresses the shortcomings of the prior art by providing an electromagnetic chuck that is reasonably designed, simple in structure, safe to use, highly accurate, and cost-effective.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An electromagnetic chuck includes a pipe clamping assembly. One side of the pipe clamping assembly is connected to a power assembly, and the opposite side is fixed in a fixed support. The pipe clamping assembly passes through the fixed support and is connected to a magnet mounting base. A rotor magnet is mounted on the upper surface of the magnet mounting base, and a grating recognition strip is mounted on the end face. The grating recognition strip is used in conjunction with a grating encoding sensor.

[0007] The grating encoding sensor is fixed at the bottom of the fixed support and close to the grating recognition strip. An electromagnetic coil is also provided at the fixed support. The electromagnetic coil works with the rotor magnet to rotate and detect the real-time position.

[0008] Furthermore, the pipe clamping assembly has an annular mounting body on one side, the power assembly is installed in the annular mounting body, and an annular protrusion on the other side, the annular protrusion being fixed in the fixed support.

[0009] Furthermore, the power assembly includes at least one cylinder, which is connected to a pipe clamping roller to control the pipe's forward and backward movement. The cylinder is also connected to a cylinder synchronizer, which controls the movement of at least one cylinder to maintain synchronization.

[0010] Furthermore, the annular protrusion is connected to the magnet mounting base via a chuck bearing, and the magnet mounting base is mounted on the outside of the chuck bearing.

[0011] Furthermore, there is at least one electromagnetic coil, which is evenly distributed at the bottom of the fixed support and close to the grating identification strip.

[0012] Furthermore, a heat sink or water-cooled radiator is installed on the electromagnetic coil.

[0013] Furthermore, a fixing plate is fixed to the bottom of the fixed support, and the fixing plate is provided with threaded holes.

[0014] Compared with the prior art, the electromagnetic chuck of this utility model has the following outstanding advantages:

[0015] This invention adopts magnetic force to directly drive the chuck rotation, eliminating the need for a motor and reducer, reducing gear clearance and mechanical vibration. Because it is a direct drive, it can improve rotation speed and rotation response speed, while eliminating the need for machining large-diameter gears on the old version of the chuck and reducing the cost of purchasing machines. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an electromagnetic chuck.

[0018] Figure 2 This is a rear view of an electromagnetic chuck;

[0019] Figure 3 This is a schematic diagram of an explosion of an electromagnetic chuck;

[0020] Figure 4 This is a rear exploded view of an electromagnetic chuck.

[0021] The markings in the attached diagram represent:

[0022] 1. Fixed support, 2. Water-cooled radiator, 3. Grating encoder sensor, 4. Pipe clamping assembly, 5. Rotor magnet, 6. Grating recognition strip, 7. Magnet mounting base, 8. Chuck bearing, 9. Electromagnetic coil, 10. Cylinder, 11. Pipe clamping roller, 12. Cylinder synchronizer, 13. Circular mounting body, 14. Fixing plate, 15. Bolt hole, 16. Circular protrusion. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0024] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself.

[0025] The following is a preferred embodiment:

[0026] like Figure 1-4 As shown, an electromagnetic chuck in this embodiment includes a pipe clamping assembly 4. The rear side of the pipe clamping assembly 4 is connected to a power assembly, and the front side is fixed in a fixed support 1. The pipe clamping assembly 4 passes through the fixed support 1 and is connected to a magnet mounting base 7. A rotor magnet 5 is mounted on the upper surface of the magnet mounting base 7, and a grating recognition strip 6 is mounted on the end face. The grating recognition strip 6 is used in conjunction with a grating encoding sensor 3.

[0027] The grating encoder sensor 3 is fixed at the bottom of the fixed support 1 and close to the grating recognition strip 6. An electromagnetic coil 9 is also provided at the fixed support 1. The electromagnetic coil 9 and the rotor magnet 5 work together to rotate and detect the real-time position.

[0028] The pipe clamping assembly 4 has a ring-shaped mounting body 13 on the rear side, the power assembly is installed in the ring-shaped mounting body 13, and a ring protrusion 16 is provided on the front side, which is fixed in the fixed support 1.

[0029] In this embodiment, the power assembly includes four cylinders 10, distributed in the top, bottom, left and right directions. The cylinders 10 are connected to the pipe clamping rollers 11 to control the pipe to move back and forth. Each cylinder 10 is also connected to its own cylinder synchronizer 12, which controls the movement of each cylinder 10 to keep them synchronized.

[0030] In this embodiment, the annular protrusion 16 is connected to the magnet mounting base 7 via the chuck bearing 8, and the magnet mounting base 7 is mounted on the outside of the chuck bearing 8.

[0031] In this embodiment, there are two electromagnetic coils 9, which are evenly distributed on both sides of the bottom of the fixed support 1 and close to the grating recognition strip 6.

[0032] In this embodiment, a water-cooled radiator 2 is installed on the electromagnetic coil 9, and a fixing plate 14 is fixed at the bottom of the fixing support 1. The fixing plate 14 is provided with a threaded hole 15, and the threaded hole 15 is connected to a bolt and fixed in any position.

[0033] In use, the circular mounting body 13 houses a cylinder 10, a cylinder synchronizer 12, and a pipe clamping roller 11. The function of the pipe clamping roller 11 is to control the forward and backward movement of the pipe after it is clamped by the cylinder 10. In this embodiment, the cylinder synchronizer 12 is a synchronization mechanism that can control the actions of the four sets of cylinders 10 to keep them synchronized. After clamping the pipe, it remains concentric with the pipe clamping roller 11.

[0034] The pipe clamping assembly 4 is mounted on the fixed support 1 via the chuck bearing 8. The rotor magnet 5 is mounted in the square slot of the magnet mounting base 7 with opposite magnetic poles of two adjacent magnets. The electromagnetic coil 9 generates heat when switching current at high speed, and a water-cooled radiator 2 is required for heat dissipation.

[0035] The electromagnetic coil 9 is fixed to the fixed support 1 by the annular protrusion 16. The electromagnetic coil 9 is driven by the driver to generate a magnetic field change, which cooperates with the permanent magnet on the rotor magnet 5 to make a rotational action. The grating recognition strip 6 is installed at the end face of the magnet mounting base 7 and rotates together with the rotor assembly. The grating encoding sensor 3 detects the actual position of the grating recognition strip 6, and then the electromagnetic coil 9 cooperates with the driver to make a magnetic field change so that the rotor magnet 5 can detect the real-time position and increase the rotation accuracy when it rotates.

[0036] This design avoids the problems of excessive vibration and unavoidable backlash in existing technologies where motors are paired with reducers for gear drives. It improves rotational speed and response speed, eliminates the need for machining large-diameter gears on older chucks, and reduces machine purchase costs.

[0037] The embodiments described above are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. An electromagnetic chuck, characterized by, The device includes a pipe clamping assembly, one side of which is connected to a power assembly and the opposite side is fixed in a fixed support. The pipe clamping assembly passes through the fixed support and is connected to a magnet mounting base. A rotor magnet is mounted on the upper surface of the magnet mounting base, and a grating recognition strip is mounted on the end face. The grating recognition strip is used in conjunction with a grating coding sensor. The grating encoding sensor is fixed at the bottom of the fixed support and close to the grating recognition strip. An electromagnetic coil is also provided at the fixed support. The electromagnetic coil works with the rotor magnet to rotate and detect the real-time position.

2. An electromagnetic chuck as claimed in claim 1, wherein The pipe clamping assembly has a ring-shaped mounting body on one side, the power assembly is installed in the ring-shaped mounting body, and a ring protrusion on the other side, the ring protrusion being fixed in the fixed support.

3. An electromagnetic chuck as claimed in claim 2, wherein The power assembly includes at least one set of cylinders. The cylinders are connected to pipe clamping rollers to control the forward and backward movement of the pipes. The cylinders are also connected to cylinder synchronizers, which control the movement of at least one cylinder to remain synchronized.

4. An electromagnetic chuck as claimed in claim 2 or 3, wherein, The annular protrusion is connected to the magnet mounting base via a chuck bearing, and the magnet mounting base is mounted on the outside of the chuck bearing.

5. An electromagnetic chuck as claimed in claim 4, wherein There is at least one electromagnetic coil, which is evenly distributed at the bottom of the fixed support and close to the grating identification strip.

6. An electromagnetic chuck as claimed in claim 5, wherein A heat sink or water-cooled radiator is installed on the electromagnetic coil.

7. An electromagnetic chuck according to claim 1, characterized in that, The fixed support has a fixed plate at its bottom, and the fixed plate has threaded holes.

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