A precision grinding machine worktable table top

Abstract

The utility model relates to numerical control machine tool technical field especially relates to a kind of precision grinding machine workbench table, including support rack, it is characterized by: the base of the cuboid frame structure is equipped at the top of support rack, the rack enclosure frame is equipped around support rack, X linear guide rail system is equipped on the base horizontal plane, Y linear guide rail system is installed at the top of X linear guide rail system, T type groove table top is installed at the top of Y linear guide rail system, multiple T type grooves are spaced apart and are set on T type groove table top along length direction, the slot width of T type groove is less than groove bottom width, grinding table top is equipped at the top of T type groove table top, the precision grinding machine workbench table of the present application is formed with high rigidity stable structure by solid cast iron base and enclosure frame, suppresses vibration, promotes accuracy;X, Y vertical guide rail cooperation, realize plane bidirectional precision positioning, multiple guide rails synchronous deviation prevention, ensure movement stable.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a precision grinding machine worktable. Background Technology

[0002] In modern manufacturing, especially in the field of high-precision machining, grinding machines are crucial equipment for achieving high-quality workpiece surface finishing. The performance of their worktables directly impacts machining accuracy, efficiency, and stability. As industrial products increasingly demand higher dimensional tolerances and surface quality, precision grinding machines are evolving towards higher rigidity, lower vibration, multi-dimensional precision positioning, and convenient clamping. This requires not only an excellent mechanical structure for the machine tool itself but also comprehensive consideration of the accuracy maintenance of the guiding system, the coordination of motion control, the flexibility of clamping methods, and the comfort of the operating environment in the worktable design. The worktable must not only bear the weight of the workpiece and fixture but also maintain micron-level or even higher positioning accuracy during high-speed reciprocating or complex trajectory movements. Simultaneously, it must be able to adapt to the machining needs of workpieces of different shapes and sizes and maintain stable performance over long periods of operation. However, existing precision grinding machine worktables often suffer from problems such as a single or insufficiently synchronized guiding system leading to limited motion accuracy, clamping structures unsuitable for diverse applications, insufficient wear resistance affecting long-term accuracy, and high operating noise impacting the operating environment.

[0003] Chinese patent discloses a grinding machine worktable (publication number: CN 207593555 U) comprising a worktable body, a mounting platform, and a magnetic table. The mounting platform is provided with a first fastener and a second fastener. The second fastener includes a pressing member, which is provided in two sets, and a linkage plate is provided between the two pressing members. The mounting platform is provided with a locking assembly for fixing the linkage plate. The locking assembly includes a fastening bolt and a T-head. The fastening bolt is linked to the linkage plate. However, this grinding machine worktable has shortcomings in terms of guiding accuracy and synchronization, clamping versatility and wear resistance, vibration reduction and noise reduction, etc. It is difficult to meet the requirements of high precision, long service life and good operating environment at the same time. Therefore, a precision grinding machine worktable surface is needed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing precision grinding machine worktables in terms of guiding accuracy and synchronization, clamping versatility and wear resistance, vibration reduction and noise reduction, and the difficulty in simultaneously meeting the requirements of high precision, long life and good operating environment. Therefore, this utility model proposes a precision grinding machine worktable surface.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A precision grinding machine worktable of this utility model includes a support frame, characterized in that: a rectangular frame structure base is provided on the top of the support frame, a frame enclosure is provided around the support frame, an X-axis linear guide system is provided on the horizontal surface of the base, a Y-axis linear guide system is installed on the top of the X-axis linear guide system, the X-axis linear guide system and the Y-axis linear guide system are arranged perpendicular to each other, a T-slot table is installed on the top of the Y-axis linear guide system, a plurality of T-slots are spaced apart along the length direction on the T-slot table, the width of the T-slot opening is smaller than the width of the slot bottom, and a grinding table is provided on the top of the T-slot table. The combination of two layers of mutually perpendicular linear guideways enables the worktable to achieve flexible and precise bidirectional positioning in the plane, meeting the positioning requirements of precision grinding; the stable base and outer frame enhance the overall rigidity and reduce the impact of vibration on machining accuracy; the special shape of the T-slot facilitates the installation of various fixtures without hindering workpiece placement, improving clamping efficiency and versatility; the layered structure separates the motion system from the machining surface, which is beneficial for maintenance and functional expansion, while ensuring the flatness and stability of the grinding surface.

[0006] Preferably, the X-axis linear guide system includes one or more correspondingly arranged guide rail components. Each guide rail component comprises multiple parallel cylindrical guide rail rods. Supports are connected to both ends of each guide rail rod, and the supports are fixed to a base. A ball screw is located at the center of each guide rail rod. A first synchronous transmission belt is connected to the outer side of each ball screw. A secondary synchronous transmission belt is connected to one side of the first synchronous transmission belt, and an X-axis servo motor is connected to one end of the secondary synchronous transmission belt. Multiple cylindrical guide rail rods provide balanced support and guidance, making the X-axis movement smoother and avoiding deviation caused by single-point force. The ball screw combined with synchronous transmission enables high-precision displacement control, ensuring accurate positioning of the worktable in the X direction. The synchronous transmission design ensures consistent movement on all guide rail rods, preventing twisting or unevenness, thereby improving the operating accuracy and reliability of the two-dimensional platform. The servo motor drive allows for flexible adjustment of movement speed and position according to processing needs, enhancing the adaptability of the equipment.

[0007] Preferably, the Y-axis linear guide system includes a mounting frame plate. Parallel linear guides and sliding blocks associated with the linear guides are respectively provided on both sides of the mounting frame plate. A lead screw nut is located at the center of the mounting frame plate. Bearing seats are provided at both ends of the lead screw nut and cooperate with the mounting frame plate. One end of the lead screw nut is connected to a second synchronous transmission belt, and the other end of the second synchronous transmission belt is connected to a Y-axis servo motor. The arrangement of the dual guides and sliding blocks enhances the linearity and stability of the Y-axis motion, effectively suppressing lateral sway. The central lead screw nut structure allows the driving force to act directly on the center position of the moving part, reducing off-center load and improving motion accuracy. The Y-axis servo motor is independently controlled, enabling the Y-axis motion to coordinate with the X-axis motion to complete complex trajectories, improving the flexibility and accuracy of machining. The frame structure is easy to assemble and maintain, while ensuring sufficient rigidity to withstand the load during the grinding process.

[0008] Preferably, the inner wall of the T-slot of the T-slot platform is provided with a wear-resistant coating, which is a ceramic-based composite coating with a thickness ranging from 50μm to 150μm. The T-slot platform has detachable limiting blocks at both ends along its length, and these limiting blocks are fixed within the T-slot. The wear-resistant coating significantly extends the service life of the T-slot and reduces the impact of wear caused by long-term use on clamping accuracy. The ceramic-based composite material possesses good hardness and anti-adhesion properties, ensuring that the slot wall remains smooth and dimensionally stable even with frequent fixture disassembly and assembly. The detachable limiting blocks allow for quick adjustment of the limiting position according to the workpiece size, increasing the applicability and flexibility of the equipment. The blocks being fixed within the slot prevent displacement during movement, ensuring reliable positioning during processing.

[0009] Preferably, the inner side of the frame is provided with a sound-insulating cotton layer. The sound-insulating cotton layer effectively absorbs and blocks the noise generated during the operation of the grinding machine, improving the working environment for operators. Reducing noise propagation also reduces interference with surrounding equipment and improves the overall acoustic environment of the workshop; the sound insulation structure does not change the strength and rigidity of the frame, balancing noise reduction and mechanical stability.

[0010] Preferably, the base is integrally cast from cast iron. The integrally cast iron base possesses excellent rigidity and integrity, effectively resisting vibration and deformation during machining. Cast iron itself has good vibration damping properties, helping to maintain the stability of the worktable during operation and grinding, thus improving machining accuracy. The integrated structure reduces assembly seams, lowering the risk of error accumulation due to loose seams and enhancing the long-term reliability of the equipment.

[0011] The advantages of this utility model are: The precision grinding machine table of this invention features a robust cuboid frame base on top of the support frame, surrounded by a frame enclosure to form a stable external support structure. This ensures excellent overall rigidity during operation and processing, effectively suppressing the impact of external vibrations on machining accuracy. The X-axis and Y-axis linear guide rail systems on the base work in a perpendicular configuration, creating a platform capable of bidirectional precision movement in the horizontal plane. This double-layer vertical guide rail layout not only achieves flexible and accurate positioning but also, through the combination of multiple cylindrical guide rails and a synchronous transmission belt, maintains consistent X-axis motion across the guide rails, preventing offset or twisting due to uneven force distribution. This ensures the table's motion accuracy and stability on complex paths. The Y-axis guide rail system, driven by parallel linear guide rails on both sides and a central lead screw nut, efficiently converts rotary motion into linear motion and works in conjunction with X-axis motion to achieve high-precision two-dimensional positioning, further enhancing the platform's comprehensive control capabilities. The T-slot table, with its narrow opening and wide bottom, allows fasteners to sink into the slot without protruding from the surface. This facilitates the installation and replacement of various fixtures without hindering the direct placement and processing of workpieces, improving the convenience and versatility of clamping. The wear-resistant coating on the inner wall of the T-slot significantly extends the service life of the slot, maintaining dimensional stability and clamping reliability over long-term use. Removable limit blocks at both ends along the length direction allow for quick adjustment of the limit range according to different processing needs, enabling the equipment to flexibly handle the positioning requirements of various workpiece sizes. The sound-absorbing cotton layer added to the inside of the frame effectively absorbs and blocks noise generated during equipment operation, improving the acoustic conditions of the operating environment without affecting the structural strength and rigidity of the frame. The base is integrally cast from cast iron, giving it excellent vibration damping performance and overall stability, reducing the risk of deformation during long-term operation, and ensuring the platform's accuracy maintenance under high-speed and high-load conditions. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a top view of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0016] Figure 4 This utility model Figure 3 Enlarged view of I in the middle.

[0017] In the diagram: 1. Frame; 2. Grinding table; 3. T-slot table; 4. Base; 5. Lead screw nut; 6. Bearing seat; 7. Linear guide; 8. Guide rod; 9. Ball screw; 10. Support; 11. First synchronous transmission belt; 12. X-axis servo motor; 13. Y-axis servo motor; 14. Second synchronous transmission belt; 15. Limit stop. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Example

[0019] Please see Figure 1-4 As shown, a precision grinding machine worktable includes a support frame, characterized in that: a rectangular frame base 4 is provided on the top of the support frame, a frame enclosure 1 is provided around the support frame, an X-axis linear guide system is provided on the horizontal surface of the base 4, a Y-axis linear guide system is installed on the top of the X-axis linear guide system, the X-axis linear guide system and the Y-axis linear guide system are arranged perpendicular to each other, a T-slot table 3 is installed on the top of the Y-axis linear guide system, a plurality of T-slots are arranged at intervals along the length direction on the T-slot table 3, the width of the T-slot opening is smaller than the width of the slot bottom, and a grinding table 2 is provided on the top of the T-slot table 3. The combination of two layers of mutually perpendicular linear guideways enables the worktable to achieve flexible and precise bidirectional positioning in the plane, meeting the positioning requirements of precision grinding; the stable base 4 and the outer frame enhance the overall rigidity and reduce the impact of vibration on machining accuracy; the special shape of the T-slot facilitates the installation of various fixtures without hindering workpiece placement, improving clamping efficiency and versatility; the layered structure separates the motion system from the machining surface, which is beneficial for maintenance and functional expansion, while ensuring the flatness and stability of the grinding surface.

[0020] In this embodiment, the X-axis linear guide system includes one or more correspondingly arranged guide rail components. Each guide rail component includes multiple parallel cylindrical guide rail rods 8. Supports 10 are connected to both ends of each guide rail rod 8, and the supports 10 are fixed to the base 4. A ball screw 9 is located at the center of each guide rail rod 8. A first synchronous transmission belt 11 is connected to the outer side of each ball screw 9. A secondary synchronous transmission belt is connected to one side of the first synchronous transmission belt 11, and an X-axis servo motor 12 is connected to one end of the secondary synchronous transmission belt. Multiple cylindrical guide rail rods 8 provide balanced support and guidance, making the X-axis movement process smoother and avoiding deviation caused by single-point force. The ball screw 9 combined with synchronous transmission enables high-precision displacement control, ensuring accurate positioning of the worktable in the X direction. The synchronous transmission design ensures consistent movement on all guide rail rods 8, preventing twisting or unevenness, thereby improving the operating accuracy and reliability of the two-dimensional platform. The servo motor drive allows for flexible adjustment of movement speed and position according to processing needs, enhancing the adaptability of the equipment.

[0021] In this embodiment, the Y-axis linear guide system includes a mounting frame plate. Parallel linear guides 7 and sliding blocks associated with the linear guides 7 are respectively provided on both sides of the mounting frame plate. A lead screw nut 5 is located at the center of the mounting frame plate. Bearing seats 6 are provided at both ends of the lead screw nut 5 and cooperate with the mounting frame plate. One end of the lead screw nut 5 is connected to a second synchronous transmission belt 14, and the other end of the second synchronous transmission belt 14 is connected to a Y-axis servo motor 13. The arrangement of the double guide rails and sliding blocks enhances the linearity and stability of the Y-axis motion, effectively suppressing lateral sway. The central lead screw nut 5 structure allows the driving force to act directly on the center position of the moving part, reducing off-center load and improving motion accuracy. The Y-axis servo motor 13 is independently controlled, enabling the Y-axis motion to coordinate with the X-axis motion to complete complex trajectories, improving the flexibility and accuracy of machining. The frame structure is easy to assemble and maintain, while ensuring sufficient rigidity to withstand the load during the grinding process.

[0022] In this embodiment, the inner wall of the T-slot of the T-slot platform 3 is provided with a wear-resistant coating. The wear-resistant coating is a ceramic-based composite coating with a thickness ranging from 50μm to 150μm. The T-slot platform 3 has detachable limiting blocks 15 at both ends along its length, and these limiting blocks 15 are fixed within the T-slot. The wear-resistant coating significantly extends the service life of the T-slot and reduces the impact of wear caused by long-term use on clamping accuracy. The ceramic-based composite material possesses good hardness and anti-adhesion properties, ensuring that the slot wall remains smooth and dimensionally stable even with frequent fixture disassembly and assembly. The detachable limiting blocks 15 allow for rapid adjustment of the limiting position according to the workpiece size, increasing the applicability and flexibility of the equipment. The blocks are fixed within the slot to prevent displacement during movement, ensuring reliable positioning during processing.

[0023] In this embodiment, a sound-insulating cotton layer is provided on the inner side of the frame 1. The sound-insulating cotton layer effectively absorbs and blocks the noise generated during the operation of the grinding machine, improving the working environment for operators. Reducing noise propagation also reduces interference with surrounding equipment and improves the overall acoustic environment of the workshop; the sound insulation structure does not change the strength and rigidity of the frame, balancing noise reduction and mechanical stability.

[0024] In this embodiment, the base 4 is integrally cast from cast iron. The integrally cast iron base 4 possesses excellent rigidity and integrity, effectively resisting vibration and deformation during machining. Cast iron itself has good vibration damping properties, helping to maintain the stability of the worktable during operation and grinding, thus improving machining accuracy. The integrated structure reduces assembly seams, lowering the risk of error accumulation due to loose seams and enhancing the long-term reliability of the equipment.

[0025] The implementation principle of this embodiment is as follows: The base 4 is surrounded by a frame 1, with a sound-insulating cotton layer attached to the inside of the frame to absorb and block noise generated by mechanical movement and grinding during operation, thus improving the acoustic conditions of the operating environment. An X-axis linear guide rail system is installed on the horizontal surface of the base 4. This system includes one or more corresponding guide rail components. Each guide rail component consists of multiple parallel cylindrical guide rail rods 8. The two ends of the guide rail rods 8 are fixed to the base 4 via supports 10, forming a multi-point supported guide path. A ball screw 9 is located at the center of each guide rail rod 8 to precisely convert rotary motion into linear motion. A first synchronous transmission belt 11 is connected to the outside of each ball screw 9. One side of the first synchronous transmission belt 11 is connected to a secondary synchronous transmission belt, and the end of the secondary synchronous transmission belt is connected to an X-axis servo motor 12. Thus, after power is applied, the X-axis servo motor 12 outputs power, which is distributed to each ball screw 9 via the synchronous transmission belt, enabling synchronous telescopic movement of the X-axis guide rail system on the base 4.

[0026] A Y-axis linear guide system is installed on top of the X-axis linear guide system. This system includes a mounting frame plate, with parallel linear guides 7 and sliding blocks cooperating with the linear guides 7 on both sides of the mounting frame plate, providing smooth linear guidance for Y-axis movement. A lead screw nut 5 is located at the center of the mounting frame plate, with both ends of the lead screw nut 5 fixed to the mounting frame plate through bearing seats 6, and one end connected to a Y-axis servo motor 13. When the Y-axis servo motor 13 operates, the rotational motion is converted into linear motion by the lead screw nut 5, pushing the mounting frame plate and its upper structure to move smoothly along the Y direction. Since the X-axis linear guide system and the Y-axis linear guide system are perpendicular to each other in spatial arrangement, the combined motion of the two allows the upper supporting structure to achieve precise positioning at any point in the horizontal plane. At this point, the Y-axis linear guide system further expands the X-axis motion platform into a composite guide system that can be moved in a controlled two-dimensional direction, ensuring that the worktable can be adjusted with micron-level precision according to the program path during processing.

[0027] A T-slot table 3 is installed on top of the Y-axis linear guide system. Multiple T-slots are spaced apart along the length of the T-slot table 3. The width of the T-slot opening is smaller than the width of the bottom, allowing the heads of fastening bolts to be recessed into the slots without protruding from the surface. This facilitates the installation of various fixtures and avoids interference with workpiece placement. The inner wall of the T-slots is coated with a ceramic-based composite wear-resistant coating to improve the wear resistance of the slot walls and maintain dimensional stability over long-term use. Removable limit blocks 15 are installed at both ends of the T-slot table 3 along its length. These limit blocks 15 are fixed within the T-slots to limit the movement range of the workpiece or fixture to accommodate different machining dimensions. A grinding table 2 is then installed on top of the T-slot table 3 as the working surface for actual grinding. During machining, the control system drives the X-axis servo motor 12 and the Y-axis servo motor 13 according to the machining program, enabling the X-axis and Y-axis linear guide systems to work together to precisely position the T-slot table 3 and the grinding table 2 below the grinding wheel, completing the grinding of the workpiece.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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 the present invention. 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 may be combined in any suitable manner in one or more embodiments or examples.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A precision grinding machine worktable, comprising a supporting frame, characterized in that: The support frame is provided with a rectangular frame base (4) at the top, and a frame frame (1) is provided around the support frame. An X-direction linear guide system is provided on the horizontal plane of the base (4). A Y-direction linear guide system is installed on the top of the X-direction linear guide system. The X-direction linear guide system and the Y-direction linear guide system are set perpendicular to each other. A T-slot table (3) is installed on the top of the Y-direction linear guide system. Multiple T-slots are spaced along the length direction on the T-slot table (3). The width of the T-slot opening is smaller than the width of the bottom of the slot. A grinding table (2) is provided on the top of the T-slot table (3).

2. The precision grinding machine worktable surface according to claim 1, characterized in that: The X-axis linear guide rail system includes a set of one or more corresponding guide rail components. Each guide rail component includes multiple cylindrical guide rail rods (8) arranged in parallel. Each guide rail rod (8) has a support (10) connected to both ends. The support (10) is fixed on the base (4). Each guide rail rod (8) has a ball screw (9) at its center. Each ball screw (9) is connected to a first synchronous transmission belt (11) on its outer side. One end of the first synchronous transmission belt (11) is connected to an X-axis servo motor (12).

3. The precision grinding machine worktable surface according to claim 1, characterized in that: The Y-axis linear guide system includes a mounting frame plate. Parallel linear guides (7) and sliding blocks associated with the linear guides (7) are respectively provided on both sides of the mounting frame plate. A lead screw nut (5) is provided at the center of the mounting frame plate. Bearing seats (6) are provided at both ends of the lead screw nut (5) and cooperate with the mounting frame plate. A second synchronous transmission belt (14) is connected to one end of the lead screw nut (5), and a Y-axis servo motor (13) is connected to one end of the second synchronous transmission belt (14).

4. The precision grinding machine worktable surface according to claim 1, characterized in that: The T-shaped groove inner wall of the T-shaped groove platform (3) is provided with a wear-resistant coating. The wear-resistant coating is a ceramic-based composite coating with a thickness range of 50μm to 150μm. The T-shaped groove platform (3) is provided with detachable limiting blocks (15) at both ends in the length direction. The limiting blocks (15) are fixed in the T-shaped groove.

5. The precision grinding machine worktable surface according to claim 1, characterized in that: The inner side of the frame (1) is provided with a sound insulation cotton layer.

6. The precision grinding machine worktable surface according to claim 1, characterized in that: The base (4) is integrally cast from cast iron.

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