Polishing device for machining neodymium-iron-boron magnet cylinder

Abstract

The utility model relates to a polishing device for processing a neodymium-iron-boron magnet cylinder, which comprises a supporting device, a polishing device, a polishing device, a polishing device, a polishing device, a polishing device and a polishing device, and is characterized in that the supporting device is mounted in the center of the top of a rack; the polishing assemblies are mounted on the front side and the rear side of the rack and used for polishing the neodymium-iron-boron magnet cylinder; the clamping assemblies are arranged on the left side and the right side of the rack and used for centering the neodymium-iron-boron magnet cylinder and enabling the neodymium-iron-boron magnet cylinder to rotate; the clamping assembly is provided with a chamfering assembly used for chamfering the two end faces of the neodymium-iron-boron magnet cylinder, the chamfering assembly comprises a tool base and a chamfering tool capable of rotating and making contact with the end faces of the neodymium-iron-boron magnet cylinder, and the chamfering tool is detachably arranged on the tool base. According to the chamfering device, the chamfering assembly is arranged and comprises the tool base capable of adjusting the angle of the chamfering tool, the angle of the chamfering tool can be adjusted only by rotating the tool base, and then chamfers of different angles can be machined.

Description

Technical Field

[0001] This utility model relates to the technical field of neodymium iron boron magnet workpiece processing equipment, specifically a grinding device for processing neodymium iron boron magnet cylinders. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets, as a high-performance permanent magnet, dominate the rare-earth magnet material market due to their excellent thermal and chemical stability. These magnets are mainly divided into two categories: bonded NdFeB magnets and sintered NdFeB magnets. In the production process of sintered NdFeB magnets, the raw product needs to undergo pressing, sintering, and subsequent machining processes such as cutting and grinding. Traditional processing methods involve grinding the surface of the magnet column with a grinding wheel close to it, followed by chamfering of the end face edges. This process often involves frequent transfer of workpieces between different machines, increasing equipment costs and manual labor burden, and also affecting production efficiency.

[0003] To address this issue, Chinese invention patent (publication number CN118418016A) provides a grinding device for neodymium iron boron magnet cylinders. This device integrates a chamfering tool, which is driven to rotate synchronously by the rotation of the drum, thereby achieving chamfering of the workpiece edges. Notably, the chamfering tool can move perpendicular to the drum's axis, effectively avoiding interference with the end-face grinding wheel and ensuring smooth end-face grinding.

[0004] However, while the aforementioned existing technology improves processing efficiency to some extent, it still has limitations. Specifically, the method of using a cylinder built into a rotary drum to move the chamfering tool is only suitable for single-sized NdFeB magnet pillars. When dealing with magnet pillars of larger diameters, the device cannot adapt flexibly. Furthermore, the device lacks the function of adjusting the chamfering angle according to specific processing requirements, which limits its application range to some extent. Utility Model Content

[0005] The purpose of this invention is to provide a grinding device for machining neodymium iron boron magnet cylinders, which introduces a chamfering assembly with an adjustable chamfering angle. The core of this assembly is a tool holder; the user can easily adjust the angle of the chamfering tool simply by rotating the tool holder, thereby meeting the machining requirements for chamfering at different angles.

[0006] To address the problems in existing technologies, this utility model provides a grinding device for processing neodymium iron boron magnet cylinders, comprising: a frame,

[0007] A support device, installed at the center of the top of the frame, is used to support the NdFeB magnet cylinder. A grinding assembly, installed on the front and rear sides of the frame, is used to grind the NdFeB magnet cylinder. A clamping assembly, located on the left and right sides of the frame, is used to center the NdFeB magnet cylinder and allow it to rotate. The clamping assembly is equipped with a chamfering assembly for chamfering both ends of the NdFeB magnet cylinder. The chamfering assembly includes a tool holder and a chamfering cutter that can be adjusted in angle and contacts the end face of the NdFeB magnet cylinder. The chamfering cutter is detachably mounted on the tool holder. The chamfering cutter has a grinding position and a standby position. When the chamfering cutter is not grinding, it is in the standby position. By adjusting the rotation of the chamfering cutter on the tool holder, the chamfering cutter moves from the standby position to the grinding position. The chamfering assembly includes a linkage drive mechanism for switching the chamfering cutter between the standby position and the grinding position.

[0008] Preferably, the linkage drive mechanism is provided with a slider that reciprocates along its transmission direction, and the chamfering assembly includes an adjustment component and a tool holder. The adjustment component is used to drive the tool holder to rotate in order to adjust the chamfer angle of the neodymium iron boron magnet column.

[0009] Preferably, the slider is provided with a scale line for easy observation of the rotation angle of the tool holder, and the tool holder is also provided with a pointer. When the tool holder stops rotating, the pointer corresponds to one of the scale lines.

[0010] Preferably, the adjustment assembly includes a worm and a worm wheel rotatably disposed in the slider, the worm and the worm wheel meshing with each other, the worm wheel being connected to the bottom of the tool holder via a shaft, the worm being rotatably disposed in the slider and one end of the worm passing through the slider and connected to a rotating component.

[0011] Preferably, a limiting groove is provided on the side of the tool holder near the chamfering cutter, the surface of the chamfering cutter in contact with the neodymium iron boron magnet cylinder is the grinding surface, and a limiting block that cooperates with the limiting groove is provided on the position of the chamfering cutter away from the grinding surface.

[0012] Preferably, the linkage drive mechanism includes a transmission screw, one end of which is equipped with a handwheel, and a slider is threadedly engaged with the transmission screw.

[0013] Preferably, the polishing assembly includes a first moving mechanism mounted on the top of the frame, a second moving mechanism mounted on the first moving mechanism, a slide plate slidably mounted on the second moving mechanism, a first rotary drive member fixed to the top of the slide plate, and a polishing head for polishing connected to the output end of the first rotary drive member.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the grinding device for processing neodymium iron boron magnet cylinders has a reasonable structure and the following advantages:

[0015] (1) This application adopts an adjustable chamfering assembly, which includes a rotatable tool holder. The user only needs to rotate the rotating part, which will drive the worm gear to rotate, thereby driving the worm wheel to rotate, and finally realizing the rotation of the tool holder and the chamfering tool. In addition, the tool holder is also equipped with a pointer and scale lines, and the user can accurately know the rotation angle of the chamfering tool by observing the correspondence between the pointer and the scale. This design is not only simple in structure, but also easy to operate, and can easily meet the chamfering processing needs of different angles.

[0016] (2) By rotating the handwheel, the front and rear positions of the chamfering knife can be adjusted, and the adjustment range is large to accommodate neodymium iron boron magnet cylinders of different diameters. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a grinding device used for machining neodymium iron boron magnet cylinders.

[0018] Figure 2 This is a top view schematic diagram of a grinding device used for machining neodymium iron boron magnet cylinders.

[0019] Figure 3 This is a three-dimensional structural diagram of a grinding component in a grinding device used for machining neodymium iron boron magnet cylinders.

[0020] Figure 4 This is a first three-dimensional structural diagram of the clamping assembly and chamfering assembly of a grinding device for machining neodymium iron boron magnet cylinders.

[0021] Figure 5 This is a first three-dimensional structural diagram of the clamping assembly and chamfering assembly of a grinding device for machining neodymium iron boron magnet cylinders.

[0022] Figure 6 This is an exploded structural diagram of the chamfering assembly of a grinding device used for machining neodymium iron boron magnet cylinders.

[0023] The diagram is labeled as follows: 1. Frame; 11. Grinding assembly; 111. First moving mechanism; 112. Second moving mechanism; 113. Slide plate; 114. First rotary drive component; 1141. Grinding head; 12. Clamping assembly; 121. Third moving mechanism; 122. Moving plate; 123. Second rotary drive component; 124. Drive gear; 125. Driven gear; 126. Clamping component; 13. Chamfering assembly; 131. Handwheel; 132. Lead screw; 133. Slider; 1331. Scale line; 134. Adjustment assembly; 1341. Worm gear; 1342. Worm wheel; 1343. Rotating component; 135. Tool holder; 1351. Limiting groove; 136. Chamfering tool; 1361. Limiting block. Detailed Implementation

[0024] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] Reference Figures 1-6 As shown, this utility model provides a grinding device for processing neodymium iron boron magnet cylinders, including: a support device installed at the top center of the frame 1 for supporting the neodymium iron boron magnet cylinder; the support assembly is existing technology, generally using a lifting structure with two support wheels to support the neodymium iron boron magnet cylinder (not shown in the figure); a grinding assembly 11 installed on the front and rear sides of the frame 1 for grinding the neodymium iron boron magnet cylinder; the grinding assembly 11 grinds the outer surface of the neodymium iron boron magnet cylinder by rotating the grinding wheel to achieve the purpose of removing burrs, improving surface finish, or changing dimensions; and a clamping assembly 12 set on the left and right sides of the frame 1 for centering the neodymium iron boron magnet cylinder and rotating it; the clamping assembly 12 ensures that the neodymium iron boron magnet cylinder maintains its centered position during grinding, avoiding displacement, and by clamping and driving the magnet cylinder to rotate, the grinding assembly 11 can evenly grind the entire surface of the cylinder. The clamping assembly 12 is provided with a chamfering assembly 13 for chamfering both ends of the neodymium iron boron magnet cylinder. The chamfering assembly 13 includes a tool holder 135 and a chamfering blade 136 that can be adjusted in angle and contacts the end face of the neodymium iron boron magnet cylinder. The chamfering blade 136 is detachably mounted on the tool holder 135. The chamfering blade 136 has a grinding position and a standby position. When the chamfering blade 136 is in the non-grinding state, it is in the standby position. By adjusting the rotation of the chamfering blade 136 on the tool holder 135, the chamfering blade 136 moves from the standby position to the grinding position. The chamfering assembly 13 includes a linkage drive mechanism for driving the chamfering blade 136 to switch between the standby position and the grinding position.

[0026] The linkage drive mechanism includes a slider 133 that reciprocates along its transmission direction. The mechanism also includes a transmission screw 132, with a handwheel 131 mounted at one end. The slider is threaded onto the transmission screw. When the operator rotates the handwheel 131, the rotational force is transmitted to the transmission screw 132 via a connection. Because the transmission screw 132 has threads, when it rotates, the slider 133, which is threaded onto it, moves linearly along the axial direction of the transmission screw 132. Thus, by rotating the handwheel 131, the operator can control the direction and distance of movement of the slider 133, thereby driving the chamfering cutter 136 to switch between the standby position and the grinding position.

[0027] By rotating the handwheel 131, the transmission screw 132 rotates, and the transmission screw 132 moves the slider 133, thereby adjusting the front and rear position of the chamfering cutter 136. The adjustment range is large to accommodate neodymium iron boron magnet cylinders of different diameters.

[0028] The chamfering assembly 13 includes an adjustment assembly 134 and a tool holder 135. The adjustment assembly 134 drives the tool holder 135 to rotate, thereby adjusting the chamfering angle of the neodymium iron boron magnet cylinder. The main function of the adjustment assembly 134 is to drive the tool holder 135 to rotate, thereby adjusting the relative angle between the chamfering cutter 136 and the neodymium iron boron magnet cylinder, and thus controlling the chamfering angle. The slider 133 is provided with a scale line 1331 for easy observation of the rotation angle of the tool holder 135. The tool holder 135 is also provided with a pointer. When the tool holder 135 stops rotating, the pointer corresponds to one of the scale lines 1331. When the tool holder 135 stops rotating, the pointer will correspond to a certain scale line 1331 on the slider 133. This scale line 1331 represents the current chamfering angle. The operator can determine whether the chamfering angle meets the requirements by observing this correspondence.

[0029] The adjusting assembly 134 includes a worm 1341 and a worm wheel 1342 rotatably disposed in the slider 133. The worm 1341 and the worm wheel 1342 mesh with each other. The worm wheel 1342 is connected to the bottom of the tool holder 135 via a shaft. The worm 1341 is rotatably disposed in the slider 133, and one end of the worm 1341 passes through the slider 133 and is connected to a rotating component 1343. The transmission of the worm 1341 and the worm wheel 1342 has self-locking properties, which means that the worm wheel 1342 cannot rotate on its own without the action of external force. This characteristic enables the chamfering tool 136 to remain stable after the chamfering angle is adjusted, and it will not rotate unexpectedly due to external factors (such as vibration, impact, etc.).

[0030] In use, the user simply rotates the rotating component 1343, which drives the worm gear 1341 to rotate, which in turn drives the worm wheel 1342 to rotate, ultimately achieving the rotation of the tool holder 135 and the chamfering cutter 136. Furthermore, the tool holder 135 is equipped with a pointer and scale lines 1331, allowing the user to accurately determine the rotation angle of the chamfering cutter 136 by observing the correspondence between the pointer and the scale. This design is not only simple in structure but also easy to operate, readily handling chamfering requirements at different angles.

[0031] The tool holder 135 is provided with a limiting groove 1351 on the side near the chamfering cutter 136, and the chamfering cutter 136 is provided with a limiting block 1361 that cooperates with the limiting groove 1351 at a position away from the grinding part.

[0032] When installing the chamfering cutter 136, the operator first aligns the limiting block 1361 of the chamfering cutter 136 with the limiting groove 1351 on the tool holder 135. Then, the limiting block 1361 is inserted into the limiting groove 1351 until it is fully engaged and tightly fitted. Finally, it is secured with bolts, and the chamfering cutter 136 is firmly fixed to the tool holder 135. During machining, even under significant cutting forces, the chamfering cutter 136 will not wobble or fall off, thus ensuring the accuracy and stability of the chamfering process.

[0033] When the chamfering tool 136 is damaged during use, the user can easily remove and replace it without replacing the entire chamfering assembly 13, thereby reducing maintenance costs and time.

[0034] The grinding assembly 11 includes a first moving mechanism 111 mounted on the top of the frame 1. The first moving mechanism 111 can be a combination of a motor and a lead screw, or a hydraulic cylinder or a pneumatic cylinder, etc., which are existing technologies. Any mechanism that can achieve linear movement is acceptable. A second moving mechanism 112 is provided on the first moving mechanism 111. The second moving mechanism 112 can be a combination of a motor and a lead screw, or a hydraulic cylinder or a pneumatic cylinder, etc., which are existing technologies. Any mechanism that can achieve linear movement is acceptable. A slide plate 113 is slidably mounted on the second moving mechanism 112. A first rotary drive 114 is fixed on the top of the slide plate 113. The output end of the first rotary drive 114 is connected to a grinding head 1141 for grinding.

[0035] When a workpiece needs to be polished, the operator first adjusts the position of the polishing head 1141 to be close to the workpiece using the first moving mechanism 111 and the second moving mechanism 112. Then, the first rotary drive 114 is activated, causing the polishing head 1141 to rotate and perform polishing operations on the workpiece surface. By adjusting parameters such as the rotation speed, moving speed, and moving path of the polishing head 1141, different polishing effects and precisions can be achieved.

[0036] The clamping assembly 12 includes a third moving mechanism 121 mounted on the frame 1. The third moving mechanism 121 can be a combination of a motor and a lead screw, or a hydraulic cylinder or a pneumatic cylinder, etc., which are existing technologies. Any mechanism that can achieve linear movement is acceptable. The clamping assembly 12 also includes a slidingly mounted moving plate 122. A clamping member 126 is rotatably mounted at the center of the top of the moving plate 122. A driven gear 125 is fixed on the clamping member 126. The output end of the third moving mechanism 121 is connected to the moving plate 122. A second rotary drive member 123 is fixed on the top of the moving plate 122. The output end of the second rotary drive member 123 is connected to a driving gear 124. The driving gear 124 and the driven gear 125 mesh with each other.

[0037] The operator first adjusts the position of the moving plate 122 via the third moving mechanism 121, so that the clamping member 126 contacts the end face of the neodymium iron boron magnet column for clamping. Then, the operator starts the second rotary drive member 123, causing the drive gear 124 to start rotating. Since the drive gear 124 and the driven gear 125 mesh with each other, the driven gear 125 and the clamping member 126 also rotate with the rotation of the drive gear 124, causing the neodymium iron boron magnet column to rotate.

[0038] In use, the neodymium iron boron magnet post is first placed on the support device of the grinding apparatus. Then, the moving plate 122 is moved by the third moving mechanism 121, and the moving plate 122 causes the clamping member 126 to contact the edge of the neodymium iron boron magnet post, thus centering and clamping the neodymium iron boron magnet post. At this time, by activating the second rotary drive member 123, the second rotary drive member 123 causes the drive gear 124 to rotate, and the drive gear 124 causes the driven gear 125 to rotate, and the clamping member 126 drives the neodymium iron boron magnet post to rotate. The grinding head 1141 contacts the surface of the neodymium iron boron magnet column through the action of the grinding assembly 11 and the second moving mechanism 112. The first rotating drive 114 is activated, which causes the grinding head 1141 to rotate and grind the surface of the neodymium iron boron magnet column. After grinding, the rotating component 1343 is rotated according to the actual production requirements. The rotating component 1343 causes the worm gear 1341 to rotate, which in turn causes the worm wheel 1342 to rotate, thereby causing the tool holder 135 to rotate and adjusting the angle of the chamfering cutter 136. The tool holder 135 also has a pointer, which corresponds to the scale line 1331, so the rotation angle of the chamfering cutter 136 can be known. Finally, the handwheel 131 is rotated, which causes the transmission screw 132 to rotate and the slider 133 to move, so that the chamfering cutter 136 contacts the edge of the end face of the neodymium iron boron magnet column. The chamfer of the end face can be processed by the rotation of the neodymium iron boron magnet column.

[0039] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A grinding device for machining neodymium iron boron magnet cylinders, comprising: Rack (1), A support device is installed at the center of the top of the frame (1) to support the neodymium iron boron magnet column; Grinding assembly (11) is installed on the front and rear sides of the frame (1) for grinding neodymium iron boron magnet cylinders; Clamping components (12) are set on the left and right sides of the frame (1) to center the neodymium iron boron magnet cylinder and make the neodymium iron boron magnet cylinder rotate. The feature is that: the clamping assembly (12) is provided with a chamfering assembly (13) for chamfering both ends of the neodymium iron boron magnet cylinder. The chamfering assembly (13) includes a tool holder (135) and a chamfering blade (136) that can adjust the angle and contact the end face of the neodymium iron boron magnet cylinder. The chamfering blade (136) is detachably mounted on the tool holder (135). The chamfering blade (136) has a grinding position and a standby position. When the chamfering blade (136) is in a non-grinding state, it is in the standby position. By adjusting the rotation of the chamfering blade (136) on the tool holder (135), the chamfering blade (136) moves from the standby position to the grinding position. The chamfering assembly (13) includes a linkage drive mechanism for driving the chamfering blade (136) to switch between the standby position and the grinding position.

2. The grinding device for processing neodymium iron boron magnet cylinders according to claim 1, characterized in that: The linkage drive mechanism is provided with a slider (133) that reciprocates along its transmission direction. The chamfering assembly (13) includes an adjustment assembly (134) and a tool holder (135). The adjustment assembly (134) is used to drive the tool holder (135) to rotate in order to adjust the chamfer angle of the neodymium iron boron magnet column.

3. A grinding device for machining neodymium iron boron magnet cylinders according to claim 2, characterized in that: The slider (133) is provided with a scale line (1331) for easy observation of the rotation angle of the tool holder (135). The tool holder (135) is also provided with a pointer. When the tool holder (135) stops rotating, the pointer corresponds to one of the scales of the scale line (1331).

4. A grinding device for machining neodymium iron boron magnet cylinders according to claim 2, characterized in that: The adjustment assembly (134) includes a worm (1341) and a worm wheel (1342) rotatably disposed in the slider (133). The worm (1341) and the worm wheel (1342) mesh with each other. The worm wheel (1342) is connected to the bottom of the tool holder (135) via a shaft. The worm (1341) is rotatably disposed in the slider (133) and one end of the worm (1341) passes through the slider (133) and is connected to a rotating component (1343).

5. A grinding device for machining neodymium iron boron magnet cylinders according to claim 1, characterized in that: The tool holder (135) is also provided with a limiting groove (1351) on the side near the chamfering tool (136). The surface of the chamfering tool (136) that contacts the neodymium iron boron magnet cylinder is the grinding surface. A limiting block (1361) that cooperates with the limiting groove (1351) is provided on the chamfering tool (136) away from the grinding surface.

6. A grinding device for machining neodymium iron boron magnet cylinders according to claim 2, characterized in that: The linkage drive mechanism includes a transmission screw (132), a handwheel (131) is installed at one end of the transmission screw (132), and a slider (133) is threaded onto the transmission screw (132).

7. A grinding device for machining neodymium iron boron magnet cylinders according to claim 1, characterized in that: The polishing assembly (11) includes a first moving mechanism (111) mounted on the top of the frame (1), a second moving mechanism (112) is provided on the first moving mechanism (111), a slide plate (113) is slidably provided on the second moving mechanism (112), a first rotary drive (114) is fixed on the top of the slide plate (113), and a polishing head (1141) for polishing is connected to the output end of the first rotary drive (114).

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