Grinding machine tailstock fine-tuning structure and grinding machine

Abstract

This utility model discloses a fine-tuning structure for a grinding machine tailstock and a grinding machine. The fine-tuning structure includes a base, a top plate, and a fine-tuning mechanism. The base has a mounting groove; the top plate is located on top of the base; the fine-tuning mechanism is located within the mounting groove and includes a first wedge and a second wedge. The first wedge moves along a first direction within the mounting groove and has a first inclined surface perpendicular to the first direction. The second wedge is positioned close to the first inclined surface and is fixedly connected to the top plate. The second wedge has a second inclined surface parallel to the first inclined surface. When the first wedge moves along the first direction, it pushes the second wedge and the top plate to move along a second direction perpendicular to the first direction. The fine-tuning structure and grinding machine provided by this application at least solve the problem of low adjustment accuracy in existing grinding machine fine-tuning structures, which affects workpiece machining quality.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and more specifically, to a fine-tuning structure for a grinding machine tailstock and a grinding machine. Background Technology

[0002] In existing technologies, the tailstock structure of grinding machines often suffers from problems such as low adjustment accuracy and poor structural stability during fine-tuning, making it difficult to meet the requirements of high-precision machining. Some fine-tuning structures use traditional threaded adjustment methods, which are prone to generating gaps during adjustment, leading to a decrease in adjustment accuracy; others have unreasonable preload provision methods, causing the tailstock to wobble during machining, thus affecting machining quality. Utility Model Content

[0003] The main objective of this invention is to provide a fine-tuning structure for the tailstock of a grinding machine, which at least solves the problem that the existing fine-tuning structures for grinding machines have low adjustment accuracy, thus affecting the quality of workpiece processing.

[0004] According to one aspect of the present invention, a fine-tuning structure for a grinding machine tailstock is provided, comprising:

[0005] A base, wherein a mounting groove is provided on the base;

[0006] A top plate, which is disposed on top of the base;

[0007] A fine-tuning mechanism is disposed within the mounting groove. The fine-tuning mechanism includes a first wedge block and a second wedge block. The first wedge block moves within the mounting groove along a first direction and has a first inclined surface inclined to the first direction. The second wedge block is disposed close to the first inclined surface and is fixedly connected to the top plate. The second wedge block has a second inclined surface parallel to the first inclined surface.

[0008] When the first wedge moves along the first direction, the first wedge pushes the second wedge and the top plate to move along a second direction perpendicular to the first direction.

[0009] Furthermore, a first rolling portion is provided between the first inclined surface and the second inclined surface; and / or,

[0010] A second rolling part is provided between the side of the first wedge block opposite to the second inclined surface and the base.

[0011] Furthermore, both the first rolling part and the second rolling part include multiple roller needles, which are arranged sequentially at intervals along the first direction, and the axes of the multiple roller needles extend along a third direction, wherein the third direction, the first direction, and the second direction are perpendicular to each other.

[0012] Furthermore, the fine-tuning mechanism also includes a fixing block, which is disposed in the mounting groove and located on the side of the first wedge block away from the second inclined surface. The second rolling part is disposed between the fixing block and the first wedge block.

[0013] Furthermore, the grinding machine tailstock fine-tuning structure also includes:

[0014] An adjusting screw is connected to the first wedge block. The adjusting screw rotates to move the first wedge block along the first direction and pushes the second wedge block and the top plate to move along the second direction.

[0015] A handwheel is screwed to the adjusting screw. Rotating the handwheel causes the adjusting screw to rotate and drives the first wedge block to move along the first direction. The handwheel has a scale on its circumference.

[0016] Furthermore, the first wedge block is provided with a T-shaped groove extending along the first direction. The T-shaped groove includes a first groove segment and a second groove segment that is perpendicularly connected to the first groove segment. The depth of the first groove segment is greater than the depth of the second groove segment.

[0017] The adjusting screw includes a limiting block and a connecting post at one end near the T-slot. The limiting block is rotatably disposed in the first slot section, and the connecting post is at least partially rotatably disposed in the second slot section.

[0018] Furthermore, the grinding machine tailstock fine-tuning structure also includes a first baffle and a second baffle, which extend along the first direction. The first baffle and the second baffle are respectively disposed at both ends of the mounting groove and are both connected to the base.

[0019] The second baffle is located on the side close to the adjusting screw, and the second baffle has a clearance hole. The end of the adjusting screw that is away from the first wedge passes through the clearance hole and is connected to the handwheel.

[0020] Furthermore, the grinding machine tailstock fine-tuning structure also includes an elastic reset structure, which is disposed between the top plate and the base;

[0021] When the first wedge moves in a direction opposite to the first direction, the elastic reset structure causes the second wedge and the top plate to move in a direction opposite to the second direction.

[0022] Furthermore, the elastic reset structure includes a first leaf spring and a second leaf spring;

[0023] Along the second direction, the first leaf spring and the second leaf spring are respectively disposed on both sides of the top plate, and both the first leaf spring and the second leaf spring are connected to the top plate and the base.

[0024] On the other hand, this application also provides a grinding machine that includes the above-described grinding machine tailstock fine-tuning structure.

[0025] In this invention, by using the cooperation of the first inclined surface of the first wedge block and the second inclined surface of the second wedge block, and utilizing the inclined surface principle of the wedge block, high-precision fine adjustment can be achieved. Compared with the threaded adjustment method used in the prior art, the adjustment accuracy is greatly improved, which can meet the high-precision machining requirements of the workpiece. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of the grinding machine tailstock fine-tuning structure disclosed in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of the grinding machine tailstock fine-tuning structure (without top plate) disclosed in this embodiment of the utility model;

[0029] Figure 3 for Figure 2 Top view;

[0030] Figure 4 for Figure 3 A sectional view;

[0031] Figure 5 for Figure 4 A magnified view of a portion of region A in the middle;

[0032] Figure 6 This is a schematic diagram of the grinding machine tailstock fine-tuning structure disclosed in an embodiment of the present utility model from a first-view perspective;

[0033] Figure 7 This is a schematic diagram of the grinding machine tailstock fine-tuning structure disclosed in this embodiment of the present utility model from a second perspective.

[0034] Figure 8 This is a schematic diagram of the grinding machine tailstock fine-tuning structure disclosed in this embodiment of the present invention from a third-person perspective;

[0035] Figure 9 This is a schematic diagram of the structure of the second baffle of the grinding machine tailstock fine-tuning structure disclosed in this embodiment of the utility model;

[0036] Figure 10 This is a schematic diagram of the top plate of the grinding machine tailstock fine-tuning structure disclosed in an embodiment of this utility model.

[0037] The above figures include the following reference numerals:

[0038] 10. Base; 11. Mounting slot; 20. Top plate; 21. Protrusion; 30. Fine-tuning mechanism; 31. First wedge block; 311. First inclined surface; 312. T-slot; 3121. First groove segment; 3122. Second groove segment; 32. Second wedge block; 321. Second inclined surface; 40. First rolling part; 41. Second rolling part; 411. Needle roller; 50. Fixing block; 60. Adjusting screw; 61. Limiting block; 62. Connecting column; 70. Handwheel; 80. First baffle; 81. Second baffle; 811. Clearance hole; 82. Sealing ring; 90. Elastic reset structure; 91. First leaf spring; 92. Second leaf spring; 100. Gap; 110. Fastener; x, First direction; y, Second direction; z, Third direction. Detailed Implementation

[0039] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0042] As mentioned in the background section, existing grinding machine tailstock structures often suffer from low adjustment accuracy and poor structural stability during fine-tuning, making it difficult to meet the demands of high-precision machining. Therefore, this application provides a novel grinding machine tailstock fine-tuning structure. This structure achieves high-precision fine-tuning through a sloped surface design between sliders, meeting the stringent positioning requirements of the tailstock during grinding. The grinding machine tailstock fine-tuning structure of this application will be described in detail below with reference to the accompanying drawings.

[0043] like Figure 1 and Figure 3 As shown, according to an embodiment of this application, a fine-tuning structure for a grinding machine tailstock is provided, which includes a base 10, a top plate 20, and a fine-tuning mechanism 30.

[0044] Specifically, the base 10 is provided with a mounting groove 11; the top plate 20 is disposed on the top of the base 10; the fine-tuning mechanism 30 is disposed in the mounting groove 11, and the fine-tuning mechanism 30 includes a first wedge block 31 and a second wedge block 32, the first wedge block 31 being disposed in the mounting groove 11 along a first direction (i.e., Figure 1 and Figure 2 The first wedge block 31 moves in the x direction and has a first inclined surface 311 inclined in the first direction. The second wedge block 32 is disposed close to the first inclined surface 311. The second wedge block 32 is fixedly connected to the top plate 20 and has a second inclined surface 321 parallel to the first inclined surface 311.

[0045] When the first wedge block 31 moves along the first direction, the first wedge block 31 pushes the second wedge block 32 and the top plate 20 along a second direction perpendicular to the first direction (i.e., Figure 1 and Figure 2 (Move in the y-direction).

[0046] In this application, the first wedge block 31 has a first inclined surface 311 inclined in a first direction, and the second wedge block 32 is disposed close to the first inclined surface 311. The second wedge block 32 is fixedly connected to the top plate 20, and the second wedge block 32 has a second inclined surface 321 parallel to the first inclined surface 311. In actual operation, when an external force is applied to the first wedge block 31 to make it move in the first direction, the translational movement in the first direction is converted into a translational movement in the second direction through the cooperation of the inclined first inclined surface 311 and the second inclined surface 321 of the second wedge block 32, thereby driving the top plate 20, which is fixed to the second wedge block 32, to move synchronously. By using inclined surface transmission, the power transmission is ensured to have no elastic deformation loss, and the displacement of the first wedge block 31 is accurately converted into the displacement of the top plate 20, providing a direct and efficient power transmission path for the clamping / retracting action of the grinding machine tailstock. In other words, this application significantly improves the fine-tuning accuracy by utilizing the structural characteristics of the wedge block. Specifically, the fine-tuning accuracy of the first wedge block 31 is determined by the tilt angle of the first inclined surface 311. For example, assuming the tilt angle is Θ and the first wedge block 31 moves a distance L along the first direction, the top plate 20 moves a distance L×tanΘ along the second direction. By controlling the amount of movement of the first wedge block 31, ultra-precision fine-tuning of the top plate 20 can be achieved, meeting the stringent requirements for the positioning accuracy of the workpiece (not shown in the figure) in grinding.

[0047] Furthermore, in this application, the first wedge block 31 is disposed within the mounting groove 11 of the base 10, and the second wedge block 32 is disposed close to the first inclined surface 311. The first wedge block 31 is restricted by the side wall of the mounting groove 11 and the second wedge block 32, ensuring that the first wedge block 31 moves only along the first direction, thus avoiding poor contact of the inclined surface due to movement deviation. In addition, in this application, the fine-tuning mechanism 30 is entirely placed within the mounting groove 11, and the top plate 20 is disposed on the top of the base 10. This eliminates the need for an additional transmission structure, saving space in the tailstock and adapting to the miniaturization and integration requirements of grinding machines. Simultaneously, the fine-tuning structure at the end of the grinding machine in this application is simple and reliable, reducing maintenance costs.

[0048] In other words, this application achieves high-precision fine-tuning by utilizing the inclined surface principle of the wedge block through the cooperation of the first inclined surface 311 of the first wedge block 31 and the second inclined surface 321 of the second wedge block 32. Compared with the threaded adjustment method used in the prior art, this greatly improves the adjustment accuracy and can meet the high-precision machining requirements of the workpiece.

[0049] like Figure 3 , Figure 4 and Figure 6As shown, a first rolling part 40 is provided between the first inclined surface 311 and the second inclined surface 321. This arrangement effectively reduces frictional resistance, making it easier for the operator to move the first wedge block 31 and allowing for more sensitive fine-tuning. Furthermore, the first rolling part 40 reduces contact wear between the first wedge block 31 and the second wedge block 32, extending the structure's service life. The first rolling part 40 can also adapt to minor unevenness in the contact surfaces, reducing the precision requirements for machining between the contact surfaces and minimizing the risk of jamming. This ensures smooth movement of the first wedge block 31 along the first direction, thereby guaranteeing the stability of the movement of the second wedge block 32 and the top plate 20 along the second direction. In addition, the first rolling part 40 between the first inclined surface 311 and the second inclined surface 321 reduces the number of precision machining steps between them, lowering manufacturing costs.

[0050] Optionally, in this application, a second rolling part 41 is provided between the side of the first wedge block 31 facing away from the second inclined surface 321 and the base 10. Providing the second rolling part 41 on the sidewall of the base 10 and the side of the first wedge block 31 facing away from the second inclined surface 321 reduces the frictional resistance between the first wedge block 31 and the sidewall of the base 10, making fine-tuning more sensitive. It also reduces wear between the first wedge block 31 and the base 10, ensuring smooth movement of the first wedge block 31 along the first direction and maintaining motion accuracy, thereby extending the service life of the entire fine-tuning mechanism 30.

[0051] like Figure 6 As shown, both the first rolling part 40 and the second rolling part 41 include multiple needle rollers 411, which are arranged sequentially at intervals along a first direction, and the axes of the multiple needle rollers 411 are all along a third direction (i.e., Figure 1 , Figure 2 and Figure 6 Extending in the z-direction, the third direction, the first direction (i.e. Figure 1 , Figure 2 and Figure 6 (x direction) and second direction (i.e. Figure 1 , Figure 2 and Figure 6 The needle rollers 411 are perpendicular to each other in the y-direction. Multiple needle rollers 411 are spaced apart along the first direction, forming a continuous rolling support surface, uniformly transmitting force, preventing excessive force on a single needle roller 411 or movement jamming, ensuring the first wedge block 31 remains stable during movement, and reducing movement deviation caused by misalignment of the needle rollers 411. Furthermore, since the axis of the needle rollers 411 extends along a third direction, the needle rollers 411 can roll freely along the first direction (perpendicular to their own axis), perfectly matching the movement requirements of the first wedge block 31 along the first direction.

[0052] Furthermore, compared to ball bearings, the needle roller 411 has a longer contact line (a greater contact length with the first inclined surface 311 and the second inclined surface 321), allowing it to withstand a larger radial load (force perpendicular to the axis of the needle roller 411) within the same space. When the grinding machine tailstock is working, the top plate 20 needs to bear the pressure of the workpiece and the vibration load during the grinding process. The force transmitted from the second wedge block 32 to the first wedge block 31 through the second inclined surface 321, as well as the pressure of the first wedge block 31 on the base 10, are both relatively large. The long contact line design of the needle roller 411 can distribute the load, preventing deformation or damage due to excessive local stress, thus ensuring reliability. In addition, the cross-sectional size (diameter) of the needle roller 411 is smaller, and the design of the axis extending along a third direction can make full use of the narrow mating space between the first wedge block 31 and the base 10, and between the two inclined surfaces, saving installation space.

[0053] like Figures 2 to 5 As shown, the fine-tuning mechanism 30 also includes a fixing block 50, which is disposed in the mounting groove 11 and located on the side of the first wedge block 31 opposite to the second inclined surface 321. The second rolling part 41 is disposed between the fixing block 50 and the first wedge block 31. In this application, the fixing block 50 is fixed to the base 10 by fasteners 110 (such as bolts, screws, etc.). The fixing block 50 can limit the position of the first wedge block 31 to prevent the first wedge block 31 from shifting position during movement, thus reducing the adjustment accuracy.

[0054] Furthermore, such as Figure 5 and Figure 10 As shown, a protrusion 21 is provided on the top plate 20. When the top plate 20 is installed above the base 10, there is a gap 100 between the protrusion 21 and the side wall of the base 10. In this application, the base 10, top plate 20, protrusion 21, and other parts of the grinding machine tailstock have unavoidable dimensional errors during processing (such as the perpendicularity of the side wall of the base 10, the thickness deviation of the protrusion 21, etc.). During assembly, the gap 100 may also be too large or too small due to accumulated errors. The fixing block 50 can accurately compensate for processing and assembly errors, ensuring the rationality of the gap 100. The adjustment capability of the fixing block 50 for the gap 100 can ensure that the gap 100 is always within the ideal range of "no interference and no shaking", ensuring the smoothness and stability of the top plate 20 when moving in the second direction. Moreover, during use, the fixing block 50 can enhance the adaptability of the structure and cope with wear and deformation caused by long-term use.

[0055] Furthermore, in this application, when the first wedge block 31 is subjected to the pressure of the second wedge block 32, the side facing away from the inclined plane will generate a large reaction force. The fixing block 50, through a stable connection with the mounting groove 11 (such as side or bottom contact), can form a rigid support, preventing the first wedge block 31 from tilting or deforming due to force. This arrangement ensures that the first wedge block 31 always moves smoothly along the first direction, preventing poor contact between the first inclined plane 311 and the second inclined plane 321 due to posture deviation, thereby maintaining the adjustment accuracy of the fine-tuning mechanism 30. In addition, when the second rolling part 41 is worn or malfunctions, the second rolling part 41 can be quickly removed and replaced by disassembling the fixing block 50, without disassembling the base 10 or the first wedge block 31, simplifying the maintenance process and reducing equipment downtime.

[0056] like Figure 1 , Figure 2 , Figure 3 as well as Figure 6 As shown, the fine-tuning structure of the grinding machine tailstock also includes an adjusting screw 60 and a handwheel 70. The adjusting screw 60 is connected to the first wedge block 31. Rotating the adjusting screw 60 moves the first wedge block 31 along a first direction, pushing the second wedge block 32 and the top plate 20 along a second direction. The thread of the adjusting screw 60 (usually a fine-pitch thread) has a fixed pitch. Each rotation of the adjusting screw 60 along the first direction determines the displacement of the adjusting screw 60 by the pitch (e.g., when the fine-pitch thread pitch is 0.5mm, the displacement per rotation is only 0.5mm). This "thread drive" itself already possesses basic fine-tuning capabilities. Furthermore, by utilizing the inclined surface structure of the first wedge block 31 and the second wedge block 32, the displacement can be further "amplified or reduced" by the angle of the inclined surface, forming a dual fine-tuning mechanism that further improves the fine-tuning accuracy and meets the requirements of precision machining.

[0057] Furthermore, in this application, the handwheel 70 is screwed to the adjusting screw 60. Rotating the handwheel 70 causes the adjusting screw 60 to rotate, which in turn moves the first wedge block 31 along a first direction. The handwheel 70 has a scale (not shown in the figure) on its circumference. This helps maintain the current position stably after adjustment, reducing displacement changes caused by vibration during processing and ensuring workpiece machining accuracy. The diameter of the handwheel 70 is larger than the diameter of the adjusting screw 60. When rotating the handwheel 70, the operator only needs a small force to drive the adjusting screw 60 to rotate (the larger the diameter of the handwheel 70, the more obvious the force-saving effect). Compared to directly rotating the adjusting screw 60, the handwheel 70 reduces adjustment deviations caused by uneven force, especially when fine adjustments are required, making smooth operation easier. In addition, the handwheel 70 provides a more stable grip and allows for control of the rotation amount through light turns and jogs. Combined with the progressive displacement (non-rigid impact) of the screw thread, it can accurately stop at the target position, reducing over-adjustment caused by excessive force and lowering operational errors. The handwheel 70 has a scale, which allows for quantification of the adjustment amount and visually reflects the rotation angle or number of turns of the adjusting screw 60. Combined with the pitch of the adjusting screw 60 and the angle of the first wedge block 31, the actual displacement of the top plate 20 in the second direction can be accurately calculated. In addition, the scale on the handwheel 70 facilitates reproduction and recording.

[0058] like Figure 7 and Figure 8 As shown, a T-slot 312 is provided on the first wedge block 31, extending along a first direction. The T-slot 312 includes a first groove segment 3121 and a second groove segment 3122 that is perpendicularly connected to the first groove segment 3121. The depth of the first groove segment 3121 is greater than the depth of the second groove segment 3122. The end of the adjusting screw 60 near the T-slot 312 includes a limiting block 61 and a connecting post 62. The limiting block 61 is rotatably disposed in the first groove segment 3121, and the connecting post 62 is at least partially rotatably disposed in the second groove segment 3122. With this configuration, the adjusting screw 60 can rotate independently relative to the first wedge block 31 (without rigid locking). This "rotational freedom" is the basis for the adjustment screw 60 to drive the first wedge block 31 to move. When the handwheel 70 drives the adjustment screw 60 to rotate, the adjustment screw 60 does not need to drive the first wedge block 31 to rotate synchronously. It only drives the first wedge block 31 to translate along the first direction through the thread propulsion force, avoiding the increase of frictional resistance or jamming caused by "forced synchronous rotation", thus ensuring the smoothness of the adjustment process.

[0059] Furthermore, in this application, the T-slot 312 extends along a first direction, and the limiting block 61 is embedded in the first slot segment 3121, while the connecting post 62 is embedded in the second slot segment 3122. This structure forms a rigid constraint in the first direction: when the adjusting screw 60 advances or retracts along the first direction, the limiting block 61 is "pressed" against the inner wall of the first slot segment 3121, and the connecting post 62 is constrained by the inner wall of the second slot segment 3122, so that the first wedge block 31 moves synchronously along the first direction with the adjusting screw 60 (without relative slippage), ensuring effective power transmission. At the same time, the depth of the first slot segment 3121 of the T-slot 312 is greater than the depth of the second slot segment 3122, and the two are vertically connected. The limiting block 61 is located in the first slot segment 3121; the connecting post 62 connects the limiting block 61 and the main body of the adjusting screw 60, and is partially located in the second slot segment 3122. This design ensures that the limiting block 61 will be locked by the "step" of the first groove segment 3121 regardless of whether the adjusting screw 60 is subjected to force in any direction perpendicular to the first direction (such as axial or radial). This completely prevents the adjusting screw 60 from accidentally separating from the first wedge block 31, making it particularly suitable for the vibration environment during grinding and ensuring the long-term stability of the grinding machine tailstock fine-tuning structure.

[0060] Furthermore, the greater depth of the first groove segment 3121 results in a larger contact area between the limiting block 61 and the groove wall. When the adjusting screw 60 pushes the first wedge block 31, the thrust is mainly transmitted to the inner wall of the first groove segment 3121 through the limiting block 61. The larger contact area reduces the stress per unit area, thus reducing deformation or wear of the groove wall and the limiting block 61. The connecting post 62, embedded in the second groove segment 3122, acts as an "auxiliary guide" during the rotation and movement of the adjusting screw 60, preventing the limiting block 61 from tilting (eccentric loading) due to uneven force distribution. This ensures the straightness of the first wedge block 31 when it translates along the first direction, further reducing the risk of localized wear. In addition, the T-slot 312 and the adjusting screw 60 work together to reduce the use of other components and eliminate the need for complex bolt fastening or welding. This not only saves space and adapts to the narrow structure of the grinding machine tailstock but also improves assembly and maintenance convenience and reduces production costs.

[0061] like Figures 1 to 3 As shown, the fine-tuning structure of the grinding machine tailstock also includes a first baffle 80 and a second baffle 81, extending along the first direction. The first baffle 80 and the second baffle 81 are respectively disposed at both ends of the mounting groove 11 and are both connected to the base 10. This arrangement limits the movement range of the first wedge block 31, avoids over-adjustment leading to structural failure, and provides stability, safety, and adjustment accuracy assurance for the fine-tuning structure of the grinding machine tailstock.

[0062] Furthermore, the second baffle 81 is located on the side near the adjusting screw 60, and the second baffle 81 is provided with a clearance hole 811 (e.g., Figure 9As shown, the end of the adjusting screw 60 facing away from the first wedge block 31 passes through the clearance hole 811 and connects to the handwheel 70. The clearance hole 811 of the second baffle 81 provides axial guidance for the adjusting screw 60, ensuring that the adjusting screw 60 always moves accurately along the first direction, avoiding uneven force on the first wedge block 31 and deviation of the movement trajectory due to the "skew" of the adjusting screw 60, thereby ensuring the straightness of the top plate 20 along the second direction (perpendicular to the fine adjustment direction), and ultimately improving the positioning accuracy of the grinding machine tailstock for the workpiece. In addition, the clearance hole 811 also disperses the force on the adjusting screw 60, reducing the impact of vibration, thereby ensuring the accuracy of fine adjustment.

[0063] Meanwhile, the first baffle 80 and the second baffle 81 are respectively installed at both ends of the mounting groove 11, which can prevent metal shavings, coolant, dust and other impurities generated during the processing from entering the interior of the mounting groove 11, protecting the internal precision components, ensuring fine-tuning accuracy and extending the service life of the equipment. Furthermore, the first baffle 80 and the second baffle 81 are fixedly connected to the base 10 with fasteners 110 (such as bolts, screws, etc.), enhancing the overall rigidity of the base 10 and resisting processing reaction forces. In other words, the first baffle 80 and the second baffle 81 not only ensure the accuracy and safety of fine-tuning through stroke limiting and guiding functions, but also improve the reliability and durability of the structure through protection and reinforcement, perfectly meeting the core requirements of the grinding machine tailstock for "precision adjustment + stable operation".

[0064] Furthermore, in this application, sealing rings 82 are provided on both the side of the first baffle 80 near the first wedge block 31 and the side of the second baffle 81 near the first wedge block 31. The sealing rings 82 can reduce the loss of lubricant on the first rolling part 40 and the second rolling part 41, maintain efficient transmission of the wedge block, and extend the service life of the components.

[0065] like Figure 2As shown, the grinding machine tailstock fine-tuning structure also includes an elastic reset structure 90, which is disposed between the top plate 20 and the base 10. When the first wedge block 31 moves in the opposite direction to the first direction, the elastic reset structure 90 causes the second wedge block 32 and the top plate 20 to move in the opposite direction to the second direction. When the first wedge block 31 drives the second wedge block 32 and the top plate 20 to move in the second direction through the wedge surface, the wedge structure itself does not have the ability to "reverse drive"—when the first wedge block 31 moves in the opposite direction (opposite to the first direction), a gap will be generated between the inclined surfaces. If there is no external force, the second wedge block 32 and the top plate 20 may remain in place due to gravity or friction and cannot automatically retract. The elastic reset structure 90, by continuously applying a reverse elastic force to the top plate 20 or the second wedge block 32, can immediately push the two to move in the opposite direction to the second direction when the first wedge block 31 moves in the reverse direction, filling the gap in the wedge surface and realizing a two-way linkage of "adjustment-retraction". This ensures that the top plate 20 can quickly retract during workpiece loading and unloading, avoiding workpiece jamming. Furthermore, the position can be corrected in the reverse direction at any time during fine-tuning, improving operational flexibility. For example, the elastic reset structure 90 can be a spring, elastic column, leaf spring, etc.

[0066] like Figure 3 and Figure 4 As shown, the elastic reset structure 90 includes a first leaf spring 91 and a second leaf spring 92. Along the second direction, the first leaf spring 91 and the second leaf spring 92 are respectively disposed on both sides of the top plate 20, and both are connected to the top plate 20 and the base 10. In this application, the first leaf spring 91 and the second leaf spring 92 disposed on both sides of the top plate 20 can provide a stable preload to the top plate 20, effectively preventing the tailstock mounted on the top plate 20 from shaking during processing, improving the stability of the grinding machine tailstock fine-tuning structure, and thus ensuring the processing quality of the workpiece. Furthermore, the elastic deformation of the first leaf spring 91 and the second leaf spring 92 has good linear characteristics, resulting in higher reset accuracy. They can provide a more uniform and stable reverse thrust to the top plate 20 and the second wedge block 32, ensuring a smooth and impact-free reset process when the first wedge block 31 moves in the reverse direction, avoiding adjustment accuracy deviations caused by elastic force fluctuations. Moreover, the leaf springs are typically flat, saving installation space. The first leaf spring 91 and the second leaf spring 92 are arranged symmetrically on both sides to ensure force balance and smooth movement during reset. The installation method of the leaf springs is simple. In this application, both the first leaf spring 91 and the second leaf spring 92 are connected to the base 10 and the top plate 20 by fasteners 110 (such as bolts, screws, etc.), which enhances the reliability of the fine adjustment structure of the grinding machine tailstock.

[0067] Furthermore, in this application, the first leaf spring 91 and the second leaf spring 92 are selected as manganese steel leaf springs. The manganese steel leaf springs are made of high-strength manganese steel material, which has good elasticity and strength, and can stably provide preload force to the top plate 20, ensuring the stability of the top plate 20 during the fine adjustment process.

[0068] Combined again Figures 1 to 10 As shown, this application also provides a grinding machine including the aforementioned grinding machine tailstock fine-tuning structure. Therefore, the grinding machine provided in this embodiment includes all the technical effects of the aforementioned grinding machine tailstock fine-tuning structure. Since the technical effects of the grinding machine tailstock fine-tuning structure have been described in detail above, they will not be repeated here.

[0069] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0070] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0071] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fine-tuning structure for a grinding machine tailstock, characterized in that, include: A base (10) having an mounting groove (11) thereon; A top plate (20) is disposed on top of the base (10); A fine-tuning mechanism (30) is disposed in the mounting groove (11). The fine-tuning mechanism (30) includes a first wedge block (31) and a second wedge block (32). The first wedge block (31) moves in the mounting groove (11) along a first direction and has a first inclined surface (311) inclined in the first direction. The second wedge block (32) is disposed close to the first inclined surface (311). The second wedge block (32) is fixedly connected to the top plate (20) and has a second inclined surface (321) parallel to the first inclined surface (311). When the first wedge block (31) moves along the first direction, the first wedge block (31) pushes the second wedge block (32) and the top plate (20) to move along a second direction perpendicular to the first direction.

2. The fine-tuning structure for the grinding machine tailstock according to claim 1, characterized in that, A first rolling part (40) is provided between the first inclined surface (311) and the second inclined surface (321); and / or, A second rolling part (41) is provided between the side of the first wedge block (31) facing away from the second inclined surface (321) and the base (10).

3. The fine-tuning structure for the grinding machine tailstock according to claim 2, characterized in that, Both the first rolling part (40) and the second rolling part (41) include multiple roller needles (411). The multiple roller needles (411) are arranged sequentially at intervals along the first direction, and the axes of the multiple roller needles (411) extend along a third direction. The third direction, the first direction, and the second direction are perpendicular to each other.

4. The fine-tuning structure for the grinding machine tailstock according to claim 2, characterized in that, The fine-tuning mechanism (30) further includes a fixing block (50), which is disposed in the mounting groove (11) and is located on the side of the first wedge block (31) away from the second inclined surface (321). The second rolling part (41) is disposed between the fixing block (50) and the first wedge block (31).

5. The fine-tuning structure for the grinding machine tailstock according to claim 1, characterized in that, The grinding machine tailstock fine-tuning structure also includes: An adjusting screw (60) is connected to the first wedge block (31). The adjusting screw (60) rotates to move the first wedge block (31) along the first direction and pushes the second wedge block (32) and the top plate (20) to move along the second direction. A handwheel (70) is screwed to the adjusting screw (60). The handwheel (70) rotates to make the adjusting screw (60) rotate and drive the first wedge block (31) to move along the first direction. The handwheel (70) is provided with a scale in the circumferential direction.

6. The fine-tuning structure for the tailstock of a grinding machine according to claim 5, characterized in that, The first wedge block (31) is provided with a T-shaped groove (312) extending along the first direction. The T-shaped groove (312) includes a first groove segment (3121) and a second groove segment (3122) that is perpendicularly connected to the first groove segment (3121). The depth of the first groove segment (3121) is greater than the depth of the second groove segment (3122). The adjusting screw (60) includes a limiting block (61) and a connecting post (62) at one end near the T-slot (312). The limiting block (61) is rotatably disposed in the first slot section (3121), and the connecting post (62) is at least partially rotatably disposed in the second slot section (3122).

7. The fine-tuning structure for the grinding machine tailstock according to claim 5, characterized in that, The grinding machine tailstock fine-tuning structure also includes a first baffle (80) and a second baffle (81), which extend along the first direction. The first baffle (80) and the second baffle (81) are respectively disposed at both ends of the mounting groove (11) and are both connected to the base (10). The second baffle (81) is located on the side close to the adjusting screw (60), and the second baffle (81) is provided with a clearance hole (811). The end of the adjusting screw (60) away from the first wedge block (31) passes through the clearance hole (811) and is connected to the handwheel (70).

8. The fine-tuning structure for the tailstock of a grinding machine according to claim 1, characterized in that, The grinding machine tailstock fine-tuning structure also includes an elastic reset structure (90), which is disposed between the top plate (20) and the base (10); When the first wedge (31) moves in a direction opposite to the first direction, the elastic reset structure (90) causes the second wedge (32) and the top plate (20) to move in a direction opposite to the second direction.

9. The fine-tuning structure for the tailstock of a grinding machine according to claim 8, characterized in that, The elastic reset structure (90) includes a first leaf spring (91) and a second leaf spring (92); Along the second direction, the first leaf spring (91) and the second leaf spring (92) are respectively disposed on both sides of the top plate (20), and both the first leaf spring (91) and the second leaf spring (92) are connected to the top plate (20) and the base (10).

10. A grinding machine, characterized in that, The grinding machine includes the grinding machine tailstock fine-tuning structure as described in any one of claims 1 to 9.

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