Neodymium-iron-boron permanent magnet material surface grinding equipment

Abstract

The invention discloses neodymium-iron-boron permanent magnet material surface grinding equipment, and belongs to the technical field of sintered neodymium-iron-boron permanent magnet materials. Comprising a mounting bottom plate, a first vertical plate and a second vertical plate are arranged on the mounting bottom plate, one end of the first vertical plate is fixed to the mounting bottom plate, one end of the second vertical plate is slidably connected to the mounting bottom plate, a rotating sleeve is arranged at the other end of the first vertical plate, and the outer surface of the middle of the rotating sleeve is rotatably connected to the first vertical plate; a driven wheel is arranged at the end, away from the second vertical plate, of the rotating sleeve, a rotating motor is fixedly arranged on the mounting bottom plate, a driving wheel is arranged at the output end of the rotating motor, a driving belt is wound around the driving wheel and the driven wheel, and at least one grinding assembly is arranged on the outer surface of the rotating sleeve. According to the technical scheme, the problem that in the prior art, when a permanent magnet element blank is manually ground, grinding inconsistency or excessive grinding is likely to occur is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of sintered NdFeB permanent magnet materials, and in particular relates to a surface grinding device for NdFeB permanent magnet materials. Background Art

[0002] Due to the different shapes and sizes of permanent magnet components, it is difficult to form other magnets in one step except for large-sized regular permanent magnet components during the production process. Therefore, in the powder metallurgy process, large pieces (large size) of blanks are generally produced first, and then sintered and tempered, and then mechanically processed (including cutting, punching, etc.) and ground, surface plated (coated), and then the magnet performance, surface quality and dimensional accuracy are tested, and finally magnetized (some products do not need magnetization, whether to magnetize is determined by the user), packaged, stored and shipped.

[0003] Grinding, also known as grinding, is a method of cutting the surface of a workpiece using a grinding wheel, oilstone and abrasives (such as aluminum oxide, silicon carbide and other particles). Its main purpose is to make the surface of the workpiece smooth, usually by gradually removing irregular parts and foreign matter on the surface of the workpiece. In the prior art, when grinding the blank of a permanent magnetic component, it is usually done manually. Since the pushing force applied by the manual during the grinding process cannot be kept consistent, the grinding amount of the outer surface of the blank is different, which is prone to inconsistent grinding or over-grinding. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a surface grinding device for NdFeB permanent magnet materials, so as to solve the problem of inconsistent grinding or over-grinding that easily occurs when the permanent magnet component blank is manually ground in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses a surface grinding device for NdFeB permanent magnet materials, comprising a mounting base plate, wherein a first vertical plate and a second vertical plate are arranged on the mounting base plate, one end of the first vertical plate is fixed to the mounting base plate, one end of the second vertical plate is slidably connected to the mounting base plate, a rotating sleeve is arranged on the other end of the first vertical plate, the middle outer surface of the rotating sleeve is rotatably connected to the first vertical plate, a driven wheel is arranged on the end of the rotating sleeve away from the second vertical plate, a rotating motor is fixedly arranged on the mounting base plate, a driving wheel is arranged on the output end of the rotating motor, a driving belt is wound around the driving wheel and the driven wheel, at least one group of grinding components is arranged on the outer surface of the rotating sleeve, and the grinding component comprises a first U-shaped mounting plate, the The two ends of the first U-shaped mounting plate are fixedly connected to the outer surface of the rotating sleeve, a sliding rod is provided in the middle of the closed end of the first U-shaped mounting plate, one end of the sliding rod is arranged through the rotating sleeve, and the outer surface of the sliding rod is slidably connected to the rotating sleeve and the first U-shaped mounting plate, a friction plate is provided on the end of the sliding rod located inside the rotating sleeve, and the friction plate is detachably connected to the sliding rod, a spring is sleeved on the sliding rod, one end of the spring is connected to the closed end of the first U-shaped mounting plate, and the other end of the spring is connected to the other end of the sliding rod, and a clamping assembly is provided on the other end of the second vertical plate, and the clamping assembly is used to clamp the columnar permanent magnetic material, and the center of the clamping assembly is coaxially arranged with the rotating sleeve.

[0007] Furthermore, a second U-shaped mounting plate is provided on the outer side of the first U-shaped mounting plate, and both ends of the second U-shaped mounting plate are fixed to the outer surface of the rotating sleeve, a through hole is provided in the middle part of the closed end of the second U-shaped mounting plate, and the spring is located in the through hole, and a slide plate is provided above the through hole, and the middle part of the slide plate is slidably connected to the slide rod, and screw rods are provided at both ends of the slide rod, and the ends of the screw rods pass through the slide rod and are threadedly connected to the second U-shaped mounting plate, one end of the spring located above the through hole is fixed to the slide rod, and an external thread is provided on the outer surface of the slide rod, and an adjusting nut is provided on the slide rod between the first U-shaped mounting plate and the second U-shaped mounting plate, and the adjusting nut is threadedly connected to the slide rod, and one end of the spring located below the second U-shaped mounting plate is fixed to the surface of the adjusting nut.

[0008] Furthermore, the mounting base plate is symmetrically provided with light rods, the ends of the second vertical plates are slidably connected to the light rods, and slides are provided on the outer sides of the two light rods, the slides are fixed to the mounting base plate, the sliders of the slides are fixedly connected to the side surfaces of the second vertical plates, and the light rods are arranged parallel to the length direction of the rotating sleeve.

[0009] Furthermore, an annular end cover is provided on one end of the driven wheel of the rotating sleeve, the annular end cover is abutted against the rotating sleeve, a negative pressure tube is provided in the middle of the annular end cover, a collecting box is provided on the mounting base plate, a negative pressure pump is provided in the collecting box, and the other end of the negative pressure tube passes through the collecting box and is connected to the negative pressure pump.

[0010] Furthermore, a dust bag is provided in the collection box, and the dust bag is used to collect the grinding powder sucked in the negative pressure tube.

[0011] Furthermore, two groups of grinding assemblies are provided on the rotating sleeve, and the two groups of grinding assemblies are arranged along the length direction of the rotating sleeve, and the friction plates in the grinding assemblies arranged close to the second vertical plate are coarse grinding friction plates, and the friction plates in the other group of grinding assemblies are fine grinding friction plates.

[0012] The beneficial effects of the present invention are:

[0013] This technical solution can automatically grind columnar permanent magnetic materials, and can adjust and control the feed rate per unit time and the grinding thickness during grinding, thereby ensuring the consistency of the grinding thickness on the surface of the columnar permanent magnetic material, improving the grinding effect and rate, and at the same time, automatically collecting the powder formed after grinding, avoiding the problem of powder escape and polluting the working environment.

[0014] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0016] Figure 1 It is a three-dimensional schematic diagram of the surface grinding device of the present invention;

[0017] Figure 2 is an internal cross-sectional view of the surface grinding device of the present invention;

[0018] Figure 3 A schematic diagram of an internal cross-sectional view of the surface grinding device of the present invention from another direction;

[0019] Figure 4 It is a three-dimensional schematic diagram of a grinding component in the surface grinding device of the present invention;

[0020] Figure 5 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0021] The following are marked in the accompanying drawings:

[0022] 1. Mounting base plate; 2. First vertical plate; 3. Rotating sleeve; 4. Driven wheel; 5. Driving wheel; 6. Driving belt; 7. Rotating motor; 8. Second U-shaped mounting plate; 9. First U-shaped mounting plate; 10. Sliding rod; 11. Friction plate; 12. External thread; 13. Spring; 14. Adjusting nut; 15. Sliding plate; 16. Screw rod; 17. Second vertical plate; 18. Light rod; 19. Slide table; 20. Sliding block; 21. Clamping assembly; 22. Columnar permanent magnetic material; 23. Annular end cover; 24. Negative pressure pipe; 25. Collection box; 26. Negative pressure pump. DETAILED DESCRIPTION

[0023] like Figure 1 to Figure 5 As shown, the present invention provides a surface grinding device for NdFeB permanent magnet materials, comprising a mounting base plate 1, on which a first vertical plate 2 and a second vertical plate 17 are provided, one end of the first vertical plate 2 is fixed to the mounting base plate 1, one end of the second vertical plate 17 is slidably connected to the mounting base plate 1, a rotating sleeve 3 is provided at the other end of the first vertical plate 2, the middle outer surface of the rotating sleeve 3 is rotatably connected to the first vertical plate 2, and can be connected through a rotating bearing, a driven wheel 4 is provided at one end of the rotating sleeve 3 away from the second vertical plate 17, a rotating motor 7 is fixedly provided on the mounting base plate 1, a driving wheel 5 is provided at the output end of the rotating motor 7, a driving belt 6 is wound around the driving wheel 5 and the driven wheel 4, at least one group of grinding components is provided on the outer surface of the rotating sleeve 3, and the grinding components include a first U-shaped mounting plate 9, both ends of the first U-shaped mounting plate 9 are fixedly connected to the outer surface of the rotating sleeve 3, and the closed end of the first U-shaped mounting plate 9 A sliding rod 10 is provided in the middle part, one end of the sliding rod 10 is arranged through the rotating sleeve 3, and the outer surface of the sliding rod 10 is slidably connected to the rotating sleeve 3 and the first U-shaped mounting plate 9. A friction plate 11 is provided on one end of the sliding rod 10 located inside the rotating sleeve 3, and the friction plate 11 is detachably connected to the sliding rod 10. A spring 13 is sleeved on the sliding rod 10, and one end of the spring 13 is connected to the closed end of the first U-shaped mounting plate 9. This is a fixed connection, and the other end of the spring 13 is connected to the other end of the sliding rod 10. The connection relationship here is that the spring 13 is fixed to the end of the sliding rod 10, and a clamping assembly 21 is provided on the other end of the second vertical plate 17. The clamping assembly 21 is used to clamp the columnar permanent magnetic material 22. The center of the clamping assembly 21 is coaxially arranged with the rotating sleeve 3. It is not difficult to understand that the clamping assembly 21 is a prior art and can be a triangular chuck structure, which will not be described in detail here.

[0024] The working principle of the above technical solution is:

[0025] When the columnar permanent magnetic material 22 needs to be polished, the outer surface of the columnar permanent magnetic material 22 is first clamped by the clamping assembly 21, and then the second vertical plate 17 is pushed and the slide bar 10 is pulled upward, so that the friction plate 11 is arranged close to the inner wall of the rotating sleeve 3, so that the columnar permanent magnetic material 22 enters the rotating sleeve 3, that is, when the slide bar 10 is released, the friction plate 11 is pressed against the outer surface of the columnar permanent magnetic material 22 under the action of the spring 13, and then the rotating motor 7 is started to drive the rotating sleeve 3 to rotate, and then drive the friction plate 11 to rotate, and the rotating friction plate 11 can grind the surface of the columnar permanent magnetic material 22. At the same time, the polishing is achieved by continuously controlling the reciprocating sliding of the second vertical plate 17, thereby driving the continuous reciprocating motion of the columnar permanent magnetic material 22, thereby realizing the continuous polishing of the length area of ​​the columnar permanent magnetic material 22 by the friction plate 11 whose position remains unchanged, thereby increasing the polishing length during one polishing. The arrangement of the spring 13 enables the friction plate 11 to press against the columnar permanent magnetic material 22, thereby improving the grinding effect and speed.

[0026] In one feasible manner, a second U-shaped mounting plate 8 is provided on the outer side of the first U-shaped mounting plate 9, and both ends of the second U-shaped mounting plate 8 are fixed on the outer surface of the rotating sleeve 3. A through hole is provided in the middle of the closed end of the second U-shaped mounting plate 8, and a spring 13 is located in the through hole. A slide plate 15 is provided above the through hole, and the middle part of the slide plate 15 is slidably connected to the slide rod 10. Screws 16 are provided at both ends of the slide plate 15, and the ends of the screws 16 pass through the slide plate 15 and are threadedly connected to the second U-shaped mounting plate 8. One end of the spring 13 located above the through hole is fixed to the slide plate 15, and an external thread 12 is provided on the outer surface of the slide rod 10. An adjusting nut 14 is provided on the slide rod 10 between the first U-shaped mounting plate 9 and the second U-shaped mounting plate 8, and the adjusting nut 14 is threadedly connected to the slide rod 10. One end of the spring 13 located below the second U-shaped mounting plate 8 is fixed to the surface of the adjusting nut 14.

[0027] Since the friction plate is in contact with the surface of the columnar permanent magnetic material 22 under the action of the spring 13, that is, firstly, the distance between the adjusting nut 14 and the first U-shaped mounting plate 9 can be controlled to control the feed amount of the slide bar 10 into the rotating sleeve 3, thereby determining the grinding thickness of the columnar permanent magnetic material 22, and then the position of the slide plate 15 on the slide bar 10 can be adjusted by rotating the screw 16, thereby changing the length of the spring 13, that is, the slide plate 15 can be further compressed by moving downward, and the slide plate 15 can be moved upward to reduce the deformation of the spring 13, thereby changing the contact force of the friction plate 11 against the surface of the columnar permanent magnetic material 22, thereby controlling the grinding rate, that is, controlling the feed rate. That is, this setting method can control the grinding amount and grinding rate, that is, there will be no excessive grinding or insufficient grinding thickness, which improves the consistency of the grinding thickness, and at the same time, the grinding rate can be controlled to improve the grinding effect and accuracy.

[0028] In one feasible method, a light rod 18 is symmetrically provided on the mounting base plate 1, and the end of the second vertical plate 17 is slidably connected to the light rod 18. A slide 19 is provided on the outer side of the two light rods 18. The slide 19 is fixed on the mounting base plate 1. The slider 20 of the slide 19 is fixedly connected to the side of the second vertical plate 17. The light rod 18 is arranged parallel to the length direction of the rotating sleeve. This sliding arrangement is relatively simple, and the automatic reciprocating grinding of the columnar permanent magnetic material 22 can be achieved by controlling the reciprocating motion of the slide 19.

[0029] In one feasible manner, an annular end cover 23 is provided on one end of the rotating sleeve 3 where the driven wheel 4 is arranged, the annular end cover 23 is abutted against the rotating sleeve 3, a negative pressure tube 24 is provided in the middle of the annular end cover 23, a collecting box 25 is provided on the mounting base plate 1, a negative pressure pump 26 is provided in the collecting box 25, the other end of the negative pressure tube 24 passes through the collecting box 25 and is connected to the negative pressure pump 26, a dust bag is provided in the collecting box 25, and the dust bag is used to collect the grinding powder sucked in the negative pressure tube 24.

[0030] The grinding powder is sucked into the dust bag for collection through the suction of the negative pressure pump 26, that is, the grinding powder is prevented from spreading in the grinding environment. At the same time, the inside of the rotating sleeve 3 is sucked through the negative pressure pipe 24. Since the side wall of the rotating sleeve 3 forms a closed environment, the unclosed end of the rotating sleeve 3 is the air inlet, that is, the air enters from one end during suction, that is, the incoming air can completely draw away the dust inside the rotating sleeve 3 and will not escape into the external environment, thereby improving the suction effect of the grinding dust.

[0031] In an practicable manner, two groups of grinding assemblies are provided on the rotating sleeve 3, and the two groups of grinding assemblies are arranged along the length direction of the rotating sleeve 3, and the friction plate 11 in the grinding assembly arranged close to the second vertical plate 17 is a rough grinding friction plate 11, and the friction plate 11 in the other group of grinding assemblies is a fine grinding friction plate 11. In this way, the compression amount of the spring 13 in the two groups of grinding assemblies is adjusted respectively, that is, the feed speed is controlled respectively, and the feed speeds of the rough grinding friction plate 11 and the fine grinding friction plate 11 are matched respectively, so that the grinding effect and the overall grinding speed can be further improved (after the grinding is completed, there is no need for fine grinding again).

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A surface grinding device for NdFeB permanent magnet material, characterized in that: The invention comprises a mounting base plate (1), wherein a first vertical plate (2) and a second vertical plate (17) are provided on the mounting base plate (1), one end of the first vertical plate (2) is fixed on the mounting base plate (1), one end of the second vertical plate (17) is slidably connected to the mounting base plate (1), a rotating sleeve (3) is provided on the other end of the first vertical plate (2), the middle outer surface of the rotating sleeve (3) is rotatably connected to the first vertical plate (2), a driven wheel (4) is provided on the end of the rotating sleeve (3) away from the second vertical plate (17), a rotating motor (7) is fixedly provided on the mounting base plate (1), a driving wheel (5) is provided on the output end of the rotating motor (7), a driving belt (6) is wound around the driving wheel (5) and the driven wheel (4), at least one group of grinding components is provided on the outer surface of the rotating sleeve (3), and the grinding components comprise a first U-shaped mounting plate (9), both ends of the first U-shaped mounting plate (9) are fixedly connected to the rotating sleeve (3), and a driving belt (6) is wound around the driving wheel (5) and the driven wheel (4). A sliding rod (10) is provided on the outer surface of the rotating sleeve (3), and a sliding rod (10) is provided in the middle of the closed end of the first U-shaped mounting plate (9). One end of the sliding rod (10) is arranged through the rotating sleeve (3), and the outer surface of the sliding rod (10) is slidably connected to the rotating sleeve (3) and the first U-shaped mounting plate (9). A friction plate (11) is provided on one end of the sliding rod (10) located inside the rotating sleeve (3). The friction plate (11) is detachably connected to the sliding rod (10). A spring (13) is sleeved on the slide bar (10), one end of the spring (13) is connected to the closed end of the first U-shaped mounting plate (9), and the other end of the spring (13) is connected to the other end of the slide bar (10). A clamping assembly (21) is provided on the other end of the second vertical plate (17), and the clamping assembly (21) is used to clamp the columnar permanent magnetic material (22). The center of the clamping assembly (21) is coaxially arranged with the rotating sleeve (3).

2. The surface grinding equipment of NdFeB permanent magnet material according to claim 1, characterized in that: A second U-shaped mounting plate (8) is provided on the outer side of the first U-shaped mounting plate (9), and both ends of the second U-shaped mounting plate (8) are fixed on the outer surface of the rotating sleeve (3). A through hole is provided in the middle of the closed end of the second U-shaped mounting plate (8), and the spring (13) is located in the through hole. A slide plate (15) is provided above the through hole, and the middle part of the slide plate (15) is slidably connected to the slide bar (10). Screw rods (16) are provided at both ends of the slide plate (15), and the ends of the screw rods (16) pass through the slide plate (15). The spring (13) is threadedly connected to the second U-shaped mounting plate (8); one end of the spring (13) located above the through hole is fixed to the slide plate (15); an external thread (12) is provided on the outer surface of the slide bar (10); an adjusting nut (14) is provided on the slide bar (10) between the first U-shaped mounting plate (9) and the second U-shaped mounting plate (8); the adjusting nut (14) is threadedly connected to the slide bar (10); and one end of the spring (13) located below the second U-shaped mounting plate (8) is fixed to the surface of the adjusting nut (14).

3. The surface grinding equipment of NdFeB permanent magnet material according to claim 1, characterized in that: The installation base plate (1) is symmetrically provided with a light rod (18), the end of the second vertical plate (17) is slidably connected to the light rod (18), and a slide table (19) is provided on the outer side of the two light rods (18), and the slide table (19) is fixed on the installation base plate (1), and the slider (20) of the slide table (19) is fixedly connected to the side surface of the second vertical plate (17), and the light rod (18) is arranged parallel to the length direction of the rotating sleeve.

4. The surface grinding equipment of NdFeB permanent magnet material according to claim 1, characterized in that: An annular end cover (23) is provided on one end of the rotating sleeve (3) on which the driven wheel (4) is arranged, and the annular end cover (23) is arranged in contact with the rotating sleeve (3). A negative pressure pipe (24) is provided in the middle of the annular end cover (23). A collecting box (25) is provided on the mounting base plate (1), and a negative pressure pump (26) is provided in the collecting box (25). The other end of the negative pressure pipe (24) passes through the collecting box (25) and is connected to the negative pressure pump (26).

5. The surface grinding equipment of NdFeB permanent magnet material according to claim 4, characterized in that: A dust collecting bag is arranged in the collecting box (25), and the dust collecting bag is used to collect the grinding powder sucked in the negative pressure pipe (24).

6. The surface grinding equipment of NdFeB permanent magnet material according to claim 1, characterized in that: The rotating sleeve (3) is provided with two groups of grinding assemblies, which are arranged along the length direction of the rotating sleeve (3), and the friction plates (11) in the grinding assemblies arranged close to the second vertical plate (17) are coarse grinding friction plates, and the friction plates (11) in the other group of grinding assemblies are fine grinding friction plates.

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