A grinding machine worktable assembly for single-end-face grinding and a grinding machine

Abstract

The utility model provides a kind of grinding machine workbench assembly and grinding machine for single end face grinding, including base and tray, the base is connected with grinding machine, the tray is provided with multiple uniformly arranged blade limiting grooves;Between the base and tray is provided with wear-resistant backing plate, the wear-resistant backing plate is the same whole structure as the shape of base, wear-resistant backing plate can completely cover the upper surface of base;Wear-resistant backing plate and base are connected by fastener one and form the workbench of grinding machine, the tray is fixed on workbench.The utility model wear-resistant backing plate sprays tungsten carbide coating, improves the wear resistance and rust resistance of workbench;When shaping workbench and grinding hard alloy workpiece, diamond grinding wheel can be used, the design of new workbench saves the auxiliary time of replacing grinding wheel, simplifies grinding wheel inventory management;When workbench is damaged or needs to be replaced, only wear-resistant backing plate needs to be repaired or replaced, it is economical and convenient.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a grinding machine worktable assembly and grinding machine for single-end face grinding. Background Technology

[0002] A grinding machine is a machine tool that uses a high-speed rotating grinding wheel as a cutting tool to perform precision machining on the surface of a workpiece. It is an indispensable key piece of equipment in the field of machining, especially in precision machining and ultra-precision machining. Grinding machines are found in almost all precision manufacturing industries, such as the manufacture and regrinding of cutting tools.

[0003] When grinding cemented carbide workpieces on one side, the workpiece is typically placed on a tray, which is then fixed to the worktable of the grinding machine. The grinding wheel grinds the surface of the workpiece. The tray has multiple evenly distributed positioning grooves that match the shape of the workpiece for positioning. During grinding, the grinding wheel exerts an axial force on the worktable and tray as a whole. As the grinding wheel rotates and the worktable feeds, it is also subjected to a radial force. Over time, these axial and radial forces can deform the worktable. Furthermore, when the grinding wheel grinds the workpiece, abrasive particles fall off, and the workpiece is ground, producing grinding debris. Under the grinding force, this abrasive and debris wears down the worktable. When the wear and deformation become severe, the worktable needs to be repaired or replaced to ensure the grinding quality of the workpiece's end face.

[0004] Application number 202220996991.3, entitled "Utility Model Patent for a Vertical Grinding Mill Base for CNC Tool Machining," includes a steel base with multiple carbide plates at its top. These carbide plates are welded to the steel base, overlapping to form a ring. A material tray is fixedly connected to the top of each carbide plate. This solution, by placing carbide plates at the top of the steel base (i.e., the grinding machine's worktable), prevents wear on the steel base during rotary grinding. The carbide plates are rust-free and not easily deformed, resulting in minimal wear and significantly reducing the frequency of regrinding. Furthermore, regrinding eliminates the need to replace the grinding wheel, reducing grinding wheel replacement time. 1. In this solution, the carbide plates between the steel base and the material tray are composed of multiple pieces spliced ​​together and welded to the steel base. If the welding is weak or damaged, repair is difficult and replacement is inconvenient. 2. As per the appendix of this solution... Figure 2As shown, the width of the carbide plate is relatively small because a certain welding space is required when welding the carbide plate to the steel base. Since the feed tray needs to be subjected to the axial force of the grinding wheel, the cutting tool limiting groove cannot be located in the hollow position of the welding space. The small width of the carbide plate restricts the width of the cutting tool limiting groove, thus limiting the size of the workpiece. 3. This solution also mentions that the feed tray is fastened to the steel base by fastening screws. The fastening screws pass through the inner hole formed by the carbide plate and connect to the steel base, meaning the fastening screws pass through a hollow section. With this connection method, it is difficult to control the preload of the screws during tightening, which may lead to unevenness on the feed tray surface and affect the grinding accuracy of the workpiece end face. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the cemented carbide plates on the steel base of existing grinding machines are difficult to repair and replace, the narrow width of the cemented carbide plates limits the width of the cutting tool limiting groove, and the structural fit between the material tray, the cemented carbide plates, and the steel base easily leads to unevenness of the material tray surface, which affects the grinding accuracy. The present invention provides a grinding machine worktable assembly and grinding machine for single-end face grinding that can solve the above technical problems.

[0006] A grinding machine table assembly for single-end face grinding includes a base and a material tray. The base is connected to the grinding machine, and the material tray has a plurality of evenly arranged blade limiting grooves. A wear-resistant pad is disposed between the base and the material tray. The wear-resistant pad is an integral structure with the same shape as the base and can completely cover the upper surface of the base. The wear-resistant pad and the base are connected by fasteners to form the grinding machine table, and the material tray is fixed on the worktable.

[0007] In practical applications, the base is connected to the feed axis of the grinding machine. The feed axis drives the base and its components to perform feed motion. Therefore, the base has a shaft hole for connection with the feed axis. In this invention, the wear-resistant pad is a single unit, fixedly connected to the base by fasteners, facilitating repair and replacement. The wear-resistant pad has the same shape as the base, and it completely covers the upper surface of the base, solving the technical problem in the prior art where the width of the blade limiting groove and the size of the workpiece are limited due to the need to reserve welding space in the cemented carbide plate.

[0008] The base is actually the worktable of a grinding machine. This invention integrates the wear-resistant pad and the base with fasteners, essentially creating a new worktable on the grinding machine. During grinding, the pad deforms due to axial and radial forces, and the abrasive and grinding chips directly cause wear. In existing technology, the base is generally made of steel, and diamond grinding wheels are commonly used. After the base is subjected to pressure and wear deformation, it needs to be reshaped (also known as leveling) using a grinding wheel. When the grinding wheel is a diamond wheel, it cannot grind a steel worktable (due to chemical wear), so it needs to be replaced with a corundum wheel. This invention features a tungsten carbide-coated wear-resistant pad on the base, allowing direct reshaping of the wear-resistant pad using a diamond grinding wheel. The same grinding wheel can be used for both reshaping and grinding the workpiece, eliminating the need for wheel replacement and saving auxiliary time, thus simplifying grinding wheel inventory management. When the worktable is damaged or needs replacement, only the wear-resistant pad needs to be repaired or replaced, making it economical and convenient.

[0009] The base in this utility model is equivalent to the steel base of the prior art patent.

[0010] Furthermore, the tray and the base are connected by a second fastener. The wear-resistant pad has a through hole with an inner diameter larger than the outer diameter of the second fastener. The second fastener passes through the tray, the through hole of the wear-resistant pad, and the base in sequence.

[0011] Furthermore, the tray is fixed to the wear-resistant pad, and the wear-resistant pad has a thickness of at least 15mm.

[0012] Furthermore, the wear-resistant pad includes a substrate and a coating covering the substrate. The coating enhances the wear resistance and rust prevention properties of the wear-resistant pad.

[0013] Furthermore, the substrate material is tempered medium-carbon alloy steel, and the coating is a tungsten carbide coating. The wear-resistant pad has low cost, good wear resistance and rust prevention, reducing production costs. It can effectively address wear and corrosion problems during cemented carbide grinding.

[0014] Furthermore, the wear-resistant pad is provided with countersunk holes to ensure that the head of the first fastener is lower than the working surface of the wear-resistant pad.

[0015] Furthermore, the base, wear-resistant pad, and material tray have the same shape, which can be circular or square. The identical shape of the base, wear-resistant pad, and material tray ensures that the material tray is evenly supported by the worktable (base and wear-resistant pad) when the grinding wheel is machining the workpiece, guaranteeing grinding accuracy.

[0016] Furthermore, the center hole of the material tray, the center hole of the wear-resistant pad, and the shaft hole of the base are the same size. This maximizes the contact area between the material tray and the wear-resistant pad, and between the wear-resistant pad and the base.

[0017] This utility model also provides a grinding machine, including a feed axis, a worktable assembly connected to the feed axis, and a grinding wheel, wherein the worktable assembly is the grinding machine worktable assembly for single-end face grinding described above.

[0018] Furthermore, the grinding wheel is a diamond grinding wheel. The worktable assembly is wear-resistant, structurally stable, and easy to replace. Combined with the fact that the grinding wheel is a diamond grinding wheel, this makes the grinding machine suitable for processing cemented carbide, superhard materials, and all non-ferrous metals. The superhard materials include synthetic diamond, polycrystalline cubic boron nitride, ceramic materials, etc.

[0019] This utility model has the following beneficial effects: This utility model discloses a grinding machine worktable assembly and grinding machine for single-end face grinding. A wear-resistant pad is added between the base and the material tray. The wear-resistant pad is an integral structure, fixed to the base by fastener one, solving the technical problems of complex operation, difficulty in repair and replacement caused by welding in existing technologies. The wear-resistant pad has the same shape as the base and can completely cover the upper surface of the base, solving the technical problem of limited blade limiting groove width caused by the need for welding space in existing technologies. The material tray is fixed to the wear-resistant pad by fastener two, or to the base, eliminating the technical problem of difficulty in controlling the preload during fastening.

[0020] This utility model features a wear-resistant pad coated with tungsten carbide, improving the wear resistance and rust prevention of the worktable. Diamond grinding wheels can be used on both the shaping worktable and when grinding cemented carbide workpieces. The new worktable design saves auxiliary time for changing grinding wheels and simplifies grinding wheel inventory management. When the worktable is damaged or needs replacement, only the wear-resistant pad needs to be repaired or replaced, making it economical and convenient. This utility model has significant advantages in improving work efficiency, simplifying management, and reducing maintenance costs. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of a grinding machine table assembly for single-end face grinding according to the present invention. Figure 2 This is a schematic diagram of the structure of the base and wear-resistant pad in Example 1. Figure 3 This is a schematic diagram of the base structure of Example 1; Figure 4 This is a schematic diagram of the wear-resistant pad in Example 1; Figure 5 This is a schematic diagram of the material tray of this utility model.

[0022] The serial numbers are: 1-base, 2-material tray, 3-blade limiting groove, 4-wear-resistant pad, 5-shaft hole, 6-fastener one, 7-through hole, 8-counterhead hole, 9-fastener two. Detailed Implementation

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0024] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0027] Example 1 A grinding machine table assembly for single-end face grinding includes a base 1 and a feed tray 2. The base 1 is connected to the grinding machine, and the feed tray 2 is provided with a plurality of evenly arranged blade limiting grooves 3. Figure 1 As shown, a wear-resistant pad 4 is provided between the base 1 and the tray 2. The wear-resistant pad 4 is an integral structure with the same shape as the base 1, such as... Figure 1 As shown, the base 1 and the wear-resistant pad 4 have the same shape and are both circular. The base 1 has a shaft hole 5 at its center that connects to the rotating shaft of the grinding machine. The wear-resistant pad 4 has the same shape as the base 1 and a central hole of the same size as the shaft hole 5 at its center. The wear-resistant pad 4 completely covers the upper surface of the base 1. Together, the wear-resistant pad 4 and the base 1 form a new worktable that supports the material tray 2. In this embodiment, the material tray 2 also has the same shape as the wear-resistant pad 4 and the base 1, and a central hole of the same size as the shaft hole 5 is also opened in the center of the material tray 2. There is no hollow structure between the material tray 2 and the wear-resistant pad 4. The new worktable can provide complete support for the material tray 2, and the width of the blade limiting groove 3 on the material tray 2 can be wider, making it suitable for larger workpieces.

[0028] The material tray 2 is fixed to the worktable, specifically meaning that the material tray 2 and the base 1 are connected by fastener 2 9. The wear-resistant pad 4 has a through hole 7, the inner diameter of which is larger than the outer diameter of fastener 2 9. Fastener 2 9 passes through the material tray 2, the through hole 7, and is connected to the base 1. Figure 2 As shown, there are three through holes 7, and three fasteners 6 connecting the wear-resistant pad 4 to the base 1, as shown. Figure 4 As shown, the wear-resistant pad 4 is provided with countersunk holes 8 to ensure that the head of the fastener 6 is lower than the working surface of the wear-resistant pad 4.

[0029] The wear-resistant pad 4 includes a substrate and a coating covering the substrate. The substrate is made of tempered medium carbon alloy steel, and the coating is a tungsten carbide coating. The coating enhances the wear resistance and rust prevention of the wear-resistant pad 4. During grinding, the wear-resistant pad 4 bears the deformation caused by axial and radial forces, as well as the direct wear from abrasive and grinding debris. When the worktable needs to be reshaped, only the wear-resistant pad 4 needs to be reshaped; when replacement is required, only the wear-resistant pad 4 needs to be replaced; when using a diamond grinding wheel for grinding, if the wear-resistant pad 4 needs to be reshaped, the grinding wheel does not need to be replaced, and the reshaping can be performed directly, saving auxiliary time for changing grinding wheels during grinding, simplifying grinding wheel inventory management, and improving production efficiency.

[0030] Example 2 A grinding machine table assembly for single-end face grinding, such as Figure 1 As shown, the device includes a base 1 and a material tray 2. The base 1 is connected to the grinding machine. The material tray 2 is provided with a plurality of evenly arranged blade limiting grooves 3. A wear-resistant pad 4 is provided between the base 1 and the material tray 2. The wear-resistant pad 4 is an integral structure with the same shape as the base 1 and can completely cover the upper surface of the base 1. The wear-resistant pad 4 and the base 1 are connected by fasteners 6 to form the worktable of the grinding machine. The material tray 2 is fixed on the worktable.

[0031] The material tray 2 and the wear-resistant pad 4 are fixed by fastener 2 9, and the thickness of the wear-resistant pad 4 is at least 15mm.

[0032] The wear-resistant pad 4 includes a substrate and a coating covering the substrate. The substrate is made of tempered medium carbon alloy steel, and the coating is a tungsten carbide coating.

[0033] The wear-resistant pad 4 is provided with countersunk holes 8 to ensure that the head of the fastener 6 is lower than the working surface of the wear-resistant pad 4.

[0034] The base 1, wear-resistant pad 4, and material tray 2 have the same shape, and the base 1, wear-resistant pad 4, and material tray 2 are all circular.

[0035] The difference between Embodiment 2 and Embodiment 1 is that the material tray 2 is fixedly connected to the wear-resistant pad 4, while in Embodiment 1, the material tray 2 is connected to the base 1 through the wear-resistant pad 4. Both connection methods can effectively solve the technical problems existing in the prior art. When using the structure described in Embodiment 2, the wear-resistant pad 4 needs to be thicker, requiring a thickness of at least 15mm.

[0036] Example 3 A grinding machine includes a feed axis, a table assembly connected to the feed axis, and a grinding wheel. The table assembly is a grinding machine table assembly for single-end face grinding as described in Embodiments 1 and 2, and the grinding wheel is a diamond grinding wheel.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made to the present utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of the present utility model.

Claims

1. A grinding machine table assembly for single-end face grinding, comprising a base and a feed tray, the base being connected to the grinding machine, and the feed tray having a plurality of evenly arranged blade limiting grooves; characterized in that, A wear-resistant pad is provided between the base and the material tray. The wear-resistant pad is an integral structure with the same shape as the base and can completely cover the upper surface of the base. The wear-resistant pad and the base are connected by fasteners to form the worktable of the grinding machine, and the material tray is fixed on the worktable.

2. A grinding machine table assembly for single-end face grinding according to claim 1, characterized in that, The tray and the base are connected by a second fastener. The wear-resistant pad has a through hole with an inner diameter larger than the outer diameter of the second fastener. The second fastener passes through the tray and the through hole in sequence and is connected to the base.

3. A grinding machine table assembly for single-end face grinding according to claim 2, characterized in that, The material tray is fixed to the wear-resistant pad, and the wear-resistant pad has a thickness of at least 15mm.

4. A grinding machine table assembly for single-end face grinding according to claim 1, characterized in that, The wear-resistant pad includes a substrate and a coating covering the substrate.

5. A grinding machine table assembly for single-end face grinding according to claim 4, characterized in that, The substrate is made of tempered medium carbon alloy steel, and the coating is a tungsten carbide coating.

6. A grinding machine table assembly for single-end face grinding according to claim 1, characterized in that, The wear-resistant pad is provided with countersunk holes to ensure that the head of fastener one is lower than the working surface of the wear-resistant pad.

7. A grinding machine table assembly for single-end face grinding according to claim 1, characterized in that, The base, wear-resistant pad, and material tray have the same shape, which can be circular or square.

8. A grinding machine table assembly for single-end face grinding according to claim 1, characterized in that, The center hole of the material tray, the center hole of the wear-resistant pad, and the shaft hole of the base are the same size.

9. A grinding machine, comprising a feed axis, a table assembly connected to the feed axis, and a grinding wheel, characterized in that, The table assembly is a grinding machine table assembly for single-end face grinding as described in any one of claims 1-8.

10. The grinding machine according to claim 9, characterized in that, The grinding wheel is a diamond grinding wheel.

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