Ultra-precision finishing device and equipment for grinding stone
By designing an ultra-precision dressing device with diamond ring grinding parts and transmission structure, the problems of low efficiency and substandard surface roughness of existing dressing devices have been solved, achieving efficient and smooth grinding stone dressing and reducing the risk of metal material chipping and scratching.
Patent Information
- Application Number
- CN202422690941.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing grinding stone dressers have low dressing efficiency, and the surface roughness of the grinding stone after dressing is not up to standard. There is a risk of metal shavings and scratches on the grinding stone, and they are not suitable for ultra-precision machining.
Design an ultra-precision dressing device for grinding stones. The device uses a diamond-made annular grinding part to protrude the first side of the main body. Combined with a transmission structure and guide hole, it ensures that the debris is discharged during the grinding process. The main body is made of aluminum or alloy material. The transmission structure is a gear or arc surface structure. The roughness of the second side RA is less than 50 angstroms, and the flatness tolerance of the grinding part is ≤0.01mm.
It improves the efficiency and flatness of grinding stone dressing, reduces the risk of processing parameter quality deviation, ensures the surface flatness and micro-RA roughness of grinding stone, and reduces the risk of metal material chipping and scratching.
Smart Images
Figure CN223558188U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of grinding stone dressing, specifically to an ultra-precision dressing device and equipment for grinding stones. Background Technology
[0002] The platters are the media that carry data in a hard drive. A hard drive consists of multiple platters stacked together, separated by gaskets. Hard drive platters are made of a durable material with a magnetic coating, and their surfaces are machined to be quite smooth. Because the platters rotate at high speeds inside the hard drive (5400 RPM, 7200 RPM, 10000 RPM, or even 15000 RPM), the materials used to make the platters require high hardness and wear resistance, so alloy materials are generally used, most commonly aluminum alloys.
[0003] Hard drive platters have evolved alongside the development of hard drives. Early hard drive platters used plastic as the base material, with magnetic materials coated onto it. Later, with the increase in hard drive speed and capacity, metal-based platters appeared. Metal platters offer higher recording density, greater rigidity, and superior security compared to plastic platters. Currently, most mainstream hard drives on the market use aluminum metal platters.
[0004] Metal platters typically require processing to become hard drive platters. One of the processes involves high-precision surface finishing of the metal platters, which requires an ultra-precision double-sided grinding machine to grind them to achieve the required flatness. After multiple batches of processing, the grinding stones on the grinding machine may not meet the grinding requirements, necessitating the refining of the grinding stones.
[0005] With the rapid development of computer technology and manufacturing technology, CNC grinding machines have evolved from ordinary coarse grinding to ultra-precision double-sided grinding, thus placing increasingly higher demands on grinding stone dressing carriers and dressing devices.
[0006] In the process of realizing this utility model, the inventors discovered that the existing dressing tools in the industry have the following drawbacks: low dressing efficiency, failure to meet the surface roughness RA value of the dressing grinding stone, and the risk of metal material chipping and scratching the grinding stone. The main technical problems with dressing wheels are high cost and unsuitability for ultra-precision machining conditions. Summary of the Invention
[0007] In view of the above problems, this utility model is proposed to provide an ultra-precision dressing device for abrasive stones that overcomes or at least partially solves the above problems.
[0008] The utility model discloses a super precision finishing device of abrasive stone for finishing the base disk grinding equipment of hard disk, comprising: main body spare, the outer roll surface of main body spare is provided with transmission structure, and the guide hole is equipped with near the central position of main body spare.
[0009] Abrasive piece, the abrasive piece is closed loop structural spare, is equipped in the first side of main body spare, and the abrasive piece protrudes the certain height of main body spare.
[0010] Further, the abrasive piece protrudes the certain height control of main body spare is 4-6MM.
[0011] Further, the abrasive piece is the annular spare made of diamond, and the annular spare is embedded the first side of main body spare.
[0012] Further, the main body spare is equipped with at least one recess, and the recess is evenly distributed on the second side opposite to the abrasive piece.
[0013] Wherein, the recess extends from the guide hole to the transmission structure.
[0014] Further, the main body spare is equipped with the installation slot, and the installation slot is arranged on the first side, and the depth of the recess is controlled to be 0.5-2mm.
[0015] Further, the guide hole includes first arc surface and second arc surface, wherein the first arc surface and the second arc surface are two respectively, and the first arc surface and the second arc surface are sequentially connected in head and tail, and the first arc surface and the second arc surface enclose the closed annular wall.
[0016] Further, the radius of the first arc surface is greater than the radius of the second arc surface.
[0017] Further, the transmission structure includes gear structure or arc surface structure.
[0018] Further, the second side roughness value is < 50 angstrom, and the flatness tolerance of the end surface of the abrasive piece is controlled to be ≤0.01mm.
[0019] The second aspect also discloses a device for finishing abrasive stone stand, comprising the super precision finishing device of abrasive stone.
[0020] The above technical scheme provided by the utility model embodiment has at least the following beneficial effects:
[0021] The utility model discloses an ultra -precision finishing device of grinding stone, through setting up the grinding piece as annular structure spare, and the grinding piece protrudes the first side surface of main part certain height, so that the generated debris in the grinding process can be discharged when finishing, guarantees the plane effect of grinding stone after finishing.
[0022] The embodiment, after designing, the stress of each area in the grinding stone finishing process is uniform, the structure of the grinding piece is not deformed, the surface flatness of the grinding stone is guaranteed, the microscopic RA roughness of the grinding stone surface is guaranteed, the surface flatness RA changes with the continuous finishing of the grinding stone, and the flatness and roughness are better and better, and the processing parameter quality overproof risk is greatly reduced.
[0023] The other features and advantages of the utility model will be described in the subsequent specification, and part becomes obvious from the specification or is understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structure specially pointed out in the written specification and drawings.
[0024] The technical scheme of the utility model will be further described in detail below through the drawings and embodiments. DRAWINGS
[0025] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the drawings needed to be used in the specific embodiment or prior art description will be simply introduced below. In all drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, various elements or parts are not necessarily drawn according to actual proportion.
[0026] Figure 1 It is the first embodiment of the utility model grinding stone stand finishing equipment schematic diagram;
[0027] Figure 2 It is the first embodiment of the utility model ultra -precision finishing device of grinding stone schematic diagram;
[0028] Figure 3 It is the utility model Figure 2 Another angle schematic view;
[0029] Figure 4 It is the utility model Figure 3 A-A sectional view;
[0030] Figure 5 It is the utility model main part schematic diagram;
[0031] Figure 6 It is the utility model Figure 5 Another angle schematic view;
[0032] Figure 7 is a schematic view of the super-precision dressing device of the new grinding stone.
[0033] Indicated in the figure are:
[0034] 10, box; 20, lower disc grinding stone; 30, upper disc grinding stone; 40, dressing device; 50, revolution column; 60, carrier; 41, grinding piece; 42, main body piece; 43, guide hole; 420, transmission structure; 421, mounting groove; 422, second arc surface; 423, first arc surface; 424, groove. DETAILED DESCRIPTION
[0035] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.
[0036] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the utility model belongs.
[0037] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0038] In addition, the terms "first", "second", and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0039] In the present application, unless otherwise specifically specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0040] In the present application, unless specifically stated and limited otherwise, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.
[0041] Please refer to the accompanying drawings Figure 1 The grinding machine comprises a machine box, an upper disc grinding stone and a lower disc grinding stone, and the metal disc is placed between the upper disc grinding stone and the lower disc grinding stone during operation, and the upper disc grinding stone and the lower disc grinding stone can grind the metal disc when the machine is started; when the upper disc grinding stone and the lower disc grinding stone need to be trimmed, the processing device is placed between the upper disc grinding stone and the lower disc grinding stone, and the processing device trims the upper disc grinding stone and the lower disc grinding stone until the requirement is met when the machine is started.
[0042] Please refer to the accompanying drawings Figure 2 The embodiment of the utility model provides the super precision trimming device 40 of grinding stone for the trimming of the base disc grinding equipment of hard disk, include: main part 42, the outer roll surface of main part 42 is provided with transmission structure 420, is equipped with guide hole 43 near the central position of main part 42;
[0043] Grinding piece 41, grinding piece 41 is closed loop structure spare, is equipped in the first side surface of main part 42, and grinding piece 41 protrudes the certain height of main part 42.
[0044] It can be understood that the existing grinding stone finishing device 40 has low finishing efficiency, the surface roughness RA value of the finished grinding stone is not up to standard, and there is a risk of metal material falling and scratching the grinding stone. In the embodiment, a grinding piece 41 is arranged on the first side of the main body 42, and the grinding piece 41 has the function of finishing the grinding stone. In order to ensure that the grinding piece 41 can better finish the grinding stone, the embodiment further sets the grinding piece 41 to protrude a certain height from the first side; at the same time, the side opposite to the grinding piece 41 of the main body 42 also has the function of finishing. In the embodiment, the grinding piece 41 is arranged as a ring-shaped structure, and the grinding piece 41 protrudes the first side of the main body 42 by a certain height, so that the generated debris during the grinding process can be discharged during finishing, and the planar effect of the finished grinding stone is ensured. In the embodiment, after such design, the stress of each area during the grinding stone finishing process is uniform, the structure of the grinding piece 41 is ensured not to be deformed, the flatness of the grinding stone surface is ensured, the microscopic RA roughness of the grinding stone surface is ensured, and the surface flatness RA changes with the continuous finishing of the grinding stone. The flatness and roughness are better and better, and the risk of quality out-of-tolerance of processing parameters is greatly reduced.
[0045] Furthermore, the main body 42 is designed as a plate-shaped structure, and a transmission structure 420 is arranged on the outer surface of the plate-shaped structure. The main body 42 can be driven to move through the transmission structure 420, and the guide hole 43 in the main body 42 cooperates with the guide rod on the equipment, so that the main body 42 can be finished along the set path. The use of the grinding piece 41 for finishing the grinding stone can be more complete and efficient.
[0046] The main body 42 is a plate-shaped structure made of a relatively hard metal material, and the thickness of the main body 42 is controlled to be 10-20 mm.
[0047] In some embodiments, the main body 42 is an aluminum base made of aluminum material, and the aluminum base is set to 12 mm. In other embodiments, the main body 42 is an alloy base made of alloy material, and the aluminum base is set to 20 mm. In still other embodiments, the main body 42 is an aluminum base made of aluminum material, and the aluminum base is set to 10 mm.
[0048] Please refer to the accompanying drawings Figure 3 and 4 Furthermore, in the embodiment, the grinding piece 41 protrudes the main body 42 by a certain height controlled to be 4-6 mm.
[0049] It can be understood that, in order to ensure that the influence of the generated debris on the grinding stone after grinding is reduced, the embodiment sets the grinding part 41 to protrude the first side of the main body part 42 by a certain height, and controls the height of the protrusion to be 4-6 mm. When the grinding part 41 grinds, the debris can be discharged through the two sides of the annular structure, reducing the influence of the debris on the grinding effect and ensuring the trimming effect on the grinding stone.
[0050] In some embodiments, the height of the protrusion of the grinding part 41 on the first side of the main body part 42 is controlled to be 5 mm; in other embodiments, the height of the protrusion of the grinding part 41 on the first side of the main body part 42 is controlled to be 4 mm; and in still other embodiments, the height of the protrusion of the grinding part 41 on the first side of the main body part 42 is controlled to be 6 mm.
[0051] Please refer to the accompanying drawings Figure 4 In further embodiments, the grinding part 41 is a diamond ring part, and the diamond ring part is embedded in the first side of the main body part 42.
[0052] It can be understood that the diamond grinding part 41 is used, and the diamond grinding part 41 is embedded on the first side of the main body part 42. The special material annular inlay groove is made of high-hardness diamond material, the flatness is ≤0.01 mm, the adhesion is high, there is no slag and burr, and the annular structure is designed to facilitate the trimming of the grinding stone and the discharge of debris.
[0053] Please refer to the accompanying drawings Figure 6 In further embodiments, the main body part 42 is provided with at least one groove, and the grooves are uniformly distributed on the second side of the main body part 42 opposite to the grinding part 41.
[0054] The grooves extend from the guide hole 43 to the transmission structure 420.
[0055] It can be understood that, in order to ensure that the debris can be discharged in time when the second side of the main body part 42 is trimmed, and to ensure the flatness of the grinding stone, the embodiment sets at least one groove on the second side of the main body part 42, and the grooves are uniformly distributed, and the grooves extend from the guide hole 43 to the transmission structure 420.
[0056] In some embodiments, the grooves are four and are uniformly distributed on the second side; in some embodiments, the grooves are three and are uniformly distributed on the second side; and in still other embodiments, the grooves are one and are provided on the second side.
[0057] Please refer to the accompanying drawings Figure 5Further, the body part 42 is provided with a mounting groove 421, which is arranged on the first side surface and the mounting groove 421 is recessed downward by a depth of 0.5-2mm.
[0058] It can be understood that, in order to increase the stability of the mounting of the grinding part 41 and the body part 42, in some embodiments, the body part 42 is provided with a mounting groove 421 for embedding the grinding part 41, so that the mounting of the grinding part 41 and the body part 42 is more stable, and the mounting groove 421 is arranged on the first side surface, and the mounting groove 421 is recessed downward by a depth of 0.5-2mm.
[0059] In some embodiments, the body part 42 is provided with a mounting groove 421, which is arranged on the first side surface and the mounting groove 421 is recessed downward by a depth of 1mm; in some other embodiments, the body part 42 is provided with a mounting groove 421, which is arranged on the first side surface and the mounting groove 421 is recessed downward by a depth of 0.5mm; in some other embodiments, the body part 42 is provided with a mounting groove 421, which is arranged on the first side surface and the mounting groove 421 is recessed downward by a depth of 2mm.
[0060] Please refer to the accompanying drawings Figure 5 Further, the guide hole 43 comprises a first arc surface 423 and a second arc surface 422, wherein the first arc surface 423 and the second arc surface 422 are two respectively, and the first arc surface 423 and the second arc surface 422 are connected in sequence, and the first arc surface 423 and the second arc surface 422 form a closed annular wall.
[0061] It can be understood that the guide hole 43 is arranged as a ring-shaped hole structure, and the hole wall is arranged as the first arc surface 423 and the second arc surface 422 respectively, and the first arc surface 423 and the second arc surface 422 are connected in sequence, thereby forming a closed annular hole wall, so that the guide rod of the device can move along the first arc surface 423 and the second arc surface 422 forming a closed loop structure during the trimming process, thereby making the grinding effect better and making the trimmed grinding stone more in line with the requirements.
[0062] Please refer to the accompanying drawings Figure 5 Further, the radius of the first arc surface 423 is greater than the radius of the second arc surface 422.
[0063] It can be understood that, in order to enable the body part 42 to move along the set path during movement and to change the path during movement, the radius of the cross section of the first arc surface 423 is greater than the radius of the cross section of the second arc surface 422.
[0064] Please refer to the attached drawings Figure 3 Further, the transmission structure 420 comprises a gear structure or an arc surface structure.
[0065] It can be understood that, in order to enable the processing device to move to modify the grinding stone, embodiments are provided with a transmission structure 420 on the outer surface of the main body 42, which can be driven by an external corresponding power mechanism to realize the movement of the main body 42, and at the same time, the grinding stone is modified. In the embodiments, the transmission structure 420 is a gear structure, that is, the gear transmission ensures the accuracy of the movement and ensures the efficiency of the modification. In addition, the embodiments can also be a circular arc surface, which is used in cooperation with the roller to move the main body 42 when the roller rotates.
[0066] Further, the RA roughness value of the second side surface is less than 50 angstroms, and the flatness tolerance of the end surface of the grinding part is controlled to be less than or equal to 0.01 mm.
[0067] The special material annular embedding groove adopts high-hardness diamond material, and the flatness thereof is controlled to be less than or equal to 0.01 mm, which ensures high bonding degree, no slag, no burr, and the annular structure size design facilitates the grinding stone modification and facilitates the chip removal effect. The RA roughness value of the second side surface is less than 50 angstroms, which also plays a role in modification.
[0068] Based on the same inventive concept, a modification device is also disclosed, which comprises a device body and the ultra-precise modification device of the grinding stone.
[0069] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. The present disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is only limited by the appended claims. Therefore, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.
Claims
1. An ultra-precision dressing device of a polishing stone for dressing of a base plate polishing apparatus of a hard disk, characterized by, The application relates to a super-precision finishing device comprising a main body provided with a transmission structure on the outer roll surface and a guide hole near the central position of the main body; a grinding piece in a closed loop structure is arranged on the first side surface of the main body, and the grinding piece protrudes the main body by a certain height. The height of the protruding grinding piece is controlled to be 4-6mm. The grinding piece is a ring-shaped piece made of diamond, and the ring-shaped piece is embedded on the first side surface of the main body.
2. The apparatus according to claim 1, wherein The main body is provided with at least one groove which is uniformly distributed on the second side surface opposite to the grinding piece.
3. The apparatus according to claim 1, wherein The groove extends from the guide hole to the transmission structure.
4. The apparatus according to claim 1, wherein The main body is provided with a mounting groove arranged on the first side surface, and the depth of the downward recess of the mounting groove is controlled to be 0.5-2mm. The guide hole comprises first and second arc surfaces, wherein the first and second arc surfaces are two respectively, the first and second arc surfaces are sequentially connected in a head-to-tail mode, and the first and second arc surfaces form a closed annular wall.
5. The apparatus according to claim 1 or 4, wherein The radius of the first arc surface is larger than that of the second arc surface.
6. The apparatus according to claim 1, wherein The transmission structure comprises a gear structure or an arc surface structure.
7. The apparatus according to claim 6, wherein The RA roughness value of the second side surface is less than 50 angstrom, and the flatness tolerance of the end surface of the grinding piece is controlled to be less than or equal to 0.01mm.
8. The apparatus according to claim 1, wherein The application further relates to a super-precision finishing device comprising the grinding stone according to any one of claims 1-9.
9. The apparatus according to claim 4, wherein 10. An apparatus, comprising: