Trimming device

Abstract

The utility model relates to the technical field of grinding wheel dressing, and discloses a dressing device which is used for dressing a grinding wheel and comprises a workbench, a grinding stone, a pressurizing piece and a lifting mechanism. The grinding stone is connected to the workbench and used for bearing the grinding wheel. The pressurizing piece is positioned above the millstone; the lifting mechanism is connected to the pressurizing piece and can drive the pressurizing piece to be close to the grinding stone so that the pressurizing piece can abut against the grinding wheel. According to the dressing device, the pressure applied to the grinding wheel by the pressurizing piece each time can be kept consistent through the lifting mechanism, accurate control over the grinding amount of the grinding wheel by the grinding stone is achieved, the defect that in the prior art, the grinding amount is uneven due to manual operation differences is overcome, the unified standard is provided for grinding wheel dressing, and the dressing efficiency is improved. The stability of the grinding wheel dressing effect is improved, the grinding efficiency is improved, and the consistency of the grinding quality of the grinding wheel is ensured.

Description

Technical Field

[0001] This utility model relates to the field of grinding wheel dressing technology, and in particular to a dressing device. Background Technology

[0002] Grinding wheel dressing refers to the process of using dressing tools to treat grinding wheels, shaping them into a specific form or removing dull surfaces, thereby restoring the grinding performance and correct geometry of the grinding wheel's working surface. In the grinding process, timely and correct grinding wheel dressing is a crucial and indispensable step in improving grinding efficiency and ensuring grinding quality.

[0003] Currently, in actual production operations, the main method of grinding wheel dressing is for the operator to manually hold the grinding wheel and press it against the grinding stone, achieving dressing through friction between the two. In this process, the amount of grinding wheel dressing depends entirely on the operator's manual application of downward pressure. However, this manual control method has significant drawbacks. Due to the lack of a unified and clear standard, it is difficult to ensure that the downward pressure applied by the operator when dressing the grinding wheel is consistent, resulting in inconsistent grinding wheel dressing amounts. This not only affects the stability of the grinding wheel dressing effect, thus reducing grinding efficiency, but also makes it difficult to ensure the consistency of grinding quality, increasing the defect rate. Utility Model Content

[0004] Aimed at at least solving one of the technical problems existing in the prior art, this utility model aims to provide a dressing device that can improve the stability of grinding wheel dressing effect, improve grinding efficiency, and ensure the consistency of grinding quality of grinding wheel.

[0005] To achieve the above objectives, this utility model provides a dressing device for dressing grinding wheels. The dressing device includes a worktable, a grinding stone, a pressure member, and a lifting mechanism. The grinding stone is connected to the worktable and is used to support the grinding wheel. The pressure member is located above the grinding stone. The lifting mechanism is connected to the pressure member and can drive the pressure member closer to the grinding stone to press the pressure member against the grinding wheel.

[0006] In some embodiments, a first mounting rod protruding downwards is connected to the bottom center of the grinding wheel, and a first mounting hole for the first mounting rod to be inserted is provided at the top center of the grinding stone.

[0007] In some embodiments, the grinding wheel has a second mounting hole at the bottom center and the grinding stone has a second mounting rod at the top center for embedding into the second mounting hole.

[0008] In some embodiments, a connecting rod protruding upward is connected to the top center of the grinding wheel; the pressure member includes a clamping rod, and the lifting mechanism is connected to the upper end of the clamping rod and can drive the clamping rod closer to the grinding stone so that the bottom of the clamping rod abuts against the top of the connecting rod.

[0009] In some embodiments, the connecting rod is circular, and the clamping rod is circular; the diameter of the clamping rod is larger than the diameter of the connecting rod.

[0010] In some embodiments, the central axis of the grinding stone and the central axis of the clamping rod coincide.

[0011] In some embodiments, the top of the connecting rod is recessed with a positioning hole; the pressure member also includes a positioning rod connected to the lower end of the clamping rod and used to insert into the positioning hole.

[0012] In some embodiments, the lifting mechanism includes a support member, a mounting plate, a screw, an adjusting handle, and a connecting seat. The lower end of the support member is connected to the worktable. The mounting plate is connected to the support member and located above the grinding stone. The mounting plate has a threaded hole that runs from top to bottom. The screw passes through the threaded hole and is threadedly connected to it. The adjusting handle is connected to the upper end of the screw and located above the mounting plate. The connecting seat is connected to the screw and located below the mounting plate. The pressure member is connected to the lower end of the connecting seat.

[0013] In some embodiments, the dressing device further includes a drive mechanism connected to the worktable and used to cause relative rotation between the grinding wheel and the grinding stone.

[0014] In some embodiments, the driving mechanism includes a driving member, a driving wheel, and an annular transmission belt. The driving member is connected to the driving wheel and can drive the driving wheel to rotate about the central axis of the driving wheel. The driving wheel is connected to the grinding wheel via the annular transmission belt.

[0015] Compared with the prior art, the dressing device provided in this embodiment of the utility model has the following advantages: By setting a lifting mechanism to connect the pressure member, the distance between the pressure member and the grinding stone can be controlled by the lifting mechanism to precisely control the pressure applied to the grinding wheel each time, thereby ensuring that the pressure applied to the grinding wheel by the pressure member remains consistent each time. Then, the relative rotation between the grinding wheel and the grinding stone is achieved automatically or manually, and the grinding stone can perform grinding treatment on the grinding wheel to dress it. Therefore, the dressing device provided by this utility model can ensure that the pressure applied to the grinding wheel by the pressure member remains consistent each time through the lifting mechanism, realizing precise control of the amount of grinding by the grinding stone on the grinding wheel. This makes up for the defect of inconsistent grinding amount caused by differences in manual operation in the prior art, provides a unified standard for grinding wheel dressing, improves the stability of grinding wheel dressing effect, improves grinding efficiency, and ensures the consistency of grinding quality of the grinding wheel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a trimming device provided in Embodiment 1 of this utility model;

[0017] Figure 2 This is a side view of a trimming device provided in Embodiment 1 of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a grinding wheel used for dressing with a dressing device provided in Embodiment 1 of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the grinding stone provided in Embodiment 1 of this utility model;

[0020] Figure 5 This is a schematic diagram of the pressure-applying component provided in Embodiment 1 of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of a grinding wheel used for dressing in a dressing device provided in Embodiment 2 of this utility model;

[0022] Figure 7 This is a schematic diagram of the grinding stone provided in Embodiment 2 of this utility model.

[0023] In the diagram, 1 represents the workbench;

[0024] 2. Grinding stone; 21. First mounting hole; 22. Second mounting rod;

[0025] 3. Pressure component; 31. Clamping rod; 32. Positioning rod;

[0026] 4. Lifting mechanism; 41. Support component; 42. Mounting plate; 43. Screw; 44. Adjusting handle; 45. Connecting seat; 451. First horizontal plate; 452. Column; 453. Second horizontal plate;

[0027] 5. Drive mechanism; 51. Drive component; 52. Drive pulley; 53. Circular transmission belt;

[0028] 100. Grinding wheel; 101. First mounting rod; 102. Connecting rod; 103. Second mounting hole; 1021. Positioning hole. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0031] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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 utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0035] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] like Figures 1-5 As shown in the figure, the first embodiment of this utility model provides a dressing device for dressing a grinding wheel 100. The dressing device includes a worktable 1, a grinding stone 2, a pressure component 3, and a lifting mechanism 4.

[0038] The grinding stone 2 is connected to the worktable 1 and is used to support the grinding wheel 100; the pressure member 3 is located above the grinding stone 2; the lifting mechanism 4 is connected to the pressure member 3 and can drive the pressure member 3 to approach the grinding stone 2 so as to press the pressure member 3 against the grinding wheel 100.

[0039] Based on this technical solution, by setting up a lifting mechanism 4 connected to the pressure-applying component 3, the distance between the pressure-applying component 3 and the grinding stone 2 can be controlled by the lifting mechanism 4. This allows for precise control of the pressure applied by the pressure-applying component 3 to the grinding wheel 100 each time, ensuring that the pressure applied by the pressure-applying component 3 to the grinding wheel 100 remains consistent each time. Then, through automatic or manual means, the grinding wheel 100 and the grinding stone 2 rotate relative to each other, allowing the grinding stone 2 to perform grinding treatment on the grinding wheel 100 to dress it. Therefore, the dressing device provided by this utility model, through the lifting mechanism 4, can ensure that the pressure applied by the pressure-applying component 3 to the grinding wheel 100 remains consistent each time, achieving precise control of the amount of grinding on the grinding wheel 100 by the grinding stone 2. This overcomes the defect in the prior art where the amount of grinding is inconsistent due to differences in manual operation, providing a unified standard for dressing the grinding wheel 100, improving the stability of the dressing effect of the grinding wheel 100, increasing grinding efficiency, and ensuring the consistency of the grinding quality of the grinding wheel 100.

[0040] See Figures 1-2 The lifting mechanism 4 provided in Embodiment 1 of this utility model is a manual lifting mechanism 4.

[0041] Specifically, the lifting mechanism 4 includes a support member 41, a mounting plate 42, a screw 43, an adjusting handle 44, and a connecting seat 45. The lower end of the support member 41 is connected to the workbench 1. The mounting plate 42 is connected to the support member 41 and is located above the grinding stone 2. The mounting plate 42 has a threaded hole that runs from top to bottom. The screw 43 passes through the threaded hole and is threadedly connected to the threaded hole. The adjusting handle 44 is connected to the upper end of the screw 43 and is located above the mounting plate 42. The connecting seat 45 is connected to the screw 43 and is located below the mounting plate 42. The pressure member 3 is connected to the lower end of the connecting seat 45.

[0042] The lifting mechanism 4 is composed of a support 41, a mounting plate 42, a screw 43, an adjusting handle 44, and a connecting seat 45. The lifting mechanism 4 has a simple structure, requires fewer parts, and the parts are common mechanical parts, resulting in relatively low processing and procurement costs. With the adjustment handle 44 and the screw 43, the operator can easily raise and lower the pressure component 3 by simply turning the adjustment handle 44, which is convenient for operation. The threaded connection between the screw 43 and the threaded hole has high transmission accuracy, which allows the lifting mechanism 4 to accurately control the lifting height of the pressure component 3. This allows for precise control of the pressure applied by the pressure component 3 to the grinding wheel 100 each time, ensuring that the pressure applied by the pressure component 3 to the grinding wheel 100 remains consistent each time.

[0043] In this first embodiment, there are two support members 41, which are respectively connected to the two ends of the mounting plate 42.

[0044] In this first embodiment, the support member 41 has a rod-shaped structure.

[0045] In this first embodiment, the connecting seat 45 includes a first horizontal plate 451, two uprights 452 and a second horizontal plate 453. The first horizontal plate 451 is connected to the connecting screw 43 and is located above the second horizontal plate 453. The two uprights 452 are spaced apart. The upper end of the uprights 452 is connected to the first horizontal plate 451 and the lower end is connected to the second horizontal plate 453. The pressure member 3 is connected to the lower end of the second horizontal plate 453.

[0046] In other embodiments, the lifting mechanism 4 may also be any lifting mechanism 4 capable of driving the pressure member 3 closer to the grinding stone 2, such as a screw and nut lifting mechanism 4, a hydraulic lifting mechanism 4, a pneumatic lifting mechanism 4, and a chain and sprocket lifting mechanism 4. No limitation is made here.

[0047] See Figures 1-2 The dressing device provided in Embodiment 1 of this utility model also includes a drive mechanism 5, which is connected to the worktable 1 and is used to cause relative rotation between the grinding wheel 100 and the grinding stone 2.

[0048] The drive mechanism 5 can actively drive the relative rotation between the grinding wheel 100 and the grinding stone 2. Compared with the traditional method of relying solely on manual pushing of the grinding wheel 100 and the grinding stone 2 to move relative to each other, the drive mechanism 5 can provide stable and efficient power output.

[0049] Optionally, the drive mechanism 5 can be used to drive the grinding stone 2 to rotate so that the grinding wheel 100 and the grinding stone 2 rotate relative to each other, or it can be used to drive the grinding wheel 100 to rotate so that the grinding wheel 100 and the grinding stone 2 rotate relative to each other.

[0050] In this embodiment, the drive mechanism 5 is used to drive the grinding wheel 100 to rotate so that the grinding wheel 100 and the grinding stone 2 rotate relative to each other.

[0051] The drive mechanism 5 includes a drive member 51, a drive wheel 52 and an annular transmission belt 53. The drive member 51 is connected to the drive wheel 52 and can drive the drive wheel 52 to rotate around the central axis of the drive wheel 52. The drive wheel 52 is connected to the grinding wheel 100 through the annular transmission belt 53.

[0052] The drive mechanism 5, consisting of the drive component 51, the drive wheel 52, and the annular transmission belt 53, can adapt to various specifications and types of grinding wheels 100. The drive wheel 52 is connected to the grinding wheel 100 via the annular transmission belt 53. By selecting the appropriate specification of the annular transmission belt 53 and adjusting the diameter of the drive wheel 52 according to the size and speed requirements of the grinding wheel 100, the power transmission between the drive wheel 52 and the grinding wheel 100 can be easily matched. At the same time, for some grinding wheels 100 with special shapes or limited installation positions, the flexible connection characteristics of the annular transmission belt 53 can bypass obstacles and achieve flexible installation, expanding the applicability of the equipment to different grinding wheels 100.

[0053] The replacement of the annular drive belt 53 is relatively simple and low in cost. During long-term use, if the annular drive belt 53 wears or ages, the operator can quickly disassemble and replace it with a new drive belt without a complicated adjustment process.

[0054] It is understandable that the drive wheel 52 is connected to the grinding wheel 100 via the annular transmission belt 53, meaning that when the drive wheel 52 rotates around its own central axis, the drive wheel 52 drives the annular transmission belt 53 to move, and the annular transmission belt 53 drives the grinding wheel 100 to rotate around the central axis of the grinding wheel 100, so that the grinding wheel 100 and the grinding stone 2 rotate relative to each other.

[0055] Optionally, the drive unit 51 can be an electric drive device such as a rotary motor that can drive the drive wheel 52 to rotate, or a manual drive device such as a rotary handle that can drive the drive wheel 52 to rotate.

[0056] In this embodiment, the driving component 51 is a rotary motor.

[0057] See Figure 3 The grinding wheel 100 used for dressing in the dressing device provided in Embodiment 1 of this utility model has a first mounting rod 101 protruding downward at the bottom center and a connecting rod 102 protruding upward at the top center of the grinding wheel 100. The top of the connecting rod 102 has a positioning hole 1021 recessed downward.

[0058] Optionally, the first mounting rod 101 may be integrally formed into the grinding wheel 100, that is, the first mounting rod 101 is part of the grinding wheel 100 itself; the first mounting rod 101 may also be connected to the grinding wheel 100 by means of interlocking, interference fit, screw connection, adhesive connection, spline connection, etc., that is, the first mounting rod 101 is not part of the grinding wheel 100 itself, the first mounting rod 101 is an external component connected to the grinding wheel 100, and the first mounting rod 101 is only connected to the grinding wheel 100 when the grinding wheel 100 needs to be dressed, and the first mounting rod 101 is removed from the grinding wheel 100 after the grinding wheel 100 is dressed.

[0059] Optionally, the connecting rod 102 may be integrally formed into the grinding wheel 100, meaning that the connecting rod 102 is part of the grinding wheel 100 itself; the connecting rod 102 may also be connected to the grinding wheel 100 by means of interlocking, interference fit, screw connection, adhesive connection, spline connection, etc., meaning that the connecting rod 102 is not part of the grinding wheel 100 itself, but an external component connected to the grinding wheel 100. The connecting rod 102 is only connected to the grinding wheel 100 when the grinding wheel 100 needs to be dressed, and the connecting rod 102 is removed from the grinding wheel 100 after the grinding wheel 100 has been dressed.

[0060] See Figures 1-4 The grinding stone 2 provided in Embodiment 1 of this utility model has a first mounting hole 21 at the top center for the first mounting rod 101 to be inserted. Through the cooperation of the first mounting rod 101 and the first mounting hole 21, the position of the grinding wheel 100 on the grinding stone 2 can be accurately determined. Each time the grinding wheel 100 is installed, simply inserting the first mounting rod 101 accurately into the first mounting hole 21 ensures that the grinding wheel 100 is centered on the grinding stone 2, achieving rapid and accurate positioning of the grinding wheel 100 on the grinding stone 2, facilitating rapid installation of the grinding wheel 100. Simultaneously, the cooperation of the first mounting rod 101 and the first mounting hole 21 also enhances the stability of the grinding wheel 100 installed on the grinding stone 2, preventing the grinding wheel 100 from shaking during dressing, reducing dressing errors caused by shaking, and ensuring a smooth dressing process.

[0061] See Figures 1-5 The pressure member 3 provided in Embodiment 1 of this utility model includes a clamping rod 31. A lifting mechanism 4 is connected to the upper end of the clamping rod 31 and can drive the clamping rod 31 closer to the grinding stone 2 so that the bottom of the clamping rod 31 abuts against the top of the connecting rod 102. By providing an upwardly protruding connecting rod 102 at the top center of the grinding wheel 100, and by having the clamping rod 31 in the pressure member 3 abut against the top of the connecting rod 102, the pressure member 3 can more firmly clamp the grinding wheel 100, thereby ensuring that the grinding wheel 100 can be firmly fixed in the working position during the dressing process. This prevents the grinding wheel 100 from shaking during the dressing process, reduces dressing errors caused by shaking, and ensures a smooth dressing process.

[0062] In this first embodiment, both the connecting rod 102 and the clamping rod 31 are circular. Circular structures are relatively simple to manufacture; both the connecting rod 102 and the clamping rod 31 can be precisely manufactured using common machining methods such as turning, reducing manufacturing costs and processing difficulty.

[0063] In this first embodiment, the diameter of the clamping rod 31 is larger than the diameter of the connecting rod 102. By setting the diameter of the clamping rod 31 to be larger than the diameter of the connecting rod 102, when the lifting mechanism 4 abuts the bottom of the clamping rod 31 against the top of the connecting rod 102, it can be ensured that the bottom surface of the clamping rod 31 completely covers and contacts the top surface of the connecting rod 102, so that the clamping rod 31 can more firmly clamp the connecting rod 102.

[0064] The central axis of the grinding stone 2 coincides with the central axis of the clamping rod 31. Thus, during the dressing process, the pressure applied by the clamping rod 31 can be symmetrically transmitted to the grinding wheel 100 along the center of the grinding stone 2, ensuring that the pressure is evenly distributed on the contact surface between the grinding wheel 100 and the grinding stone 2. This results in all parts of the grinding wheel 100 receiving the same dressing force, further improving the consistency of the dressing effect and effectively preventing uneven wear caused by uneven pressure.

[0065] The pressure component 3 also includes a positioning rod 32, which is connected to the lower end of the clamping rod 31 and is used to insert into the positioning hole 1021. The cooperation between the positioning rod 32 and the positioning hole 1021 can enhance the stability of the connection between the clamping rod 31 and the connecting rod 102, and can further prevent the grinding wheel 100 from shaking during the dressing process.

[0066] Example 2

[0067] See Figures 6-7 Unlike Embodiment 1, Embodiment 2 provides a second mounting rod 22 at the top center of the grinding stone 2. The grinding wheel 100 used for dressing with the dressing device provided in Embodiment 1 of this utility model has a second mounting hole 103 at the bottom center, and the second mounting rod 22 is used to fit into the second mounting hole 103.

[0068] By engaging the second mounting rod 22 with the second mounting hole 103, the position of the grinding wheel 100 on the grinding stone 2 can be precisely determined. Each time the grinding wheel 100 is installed, simply inserting the second mounting rod 22 accurately into the second mounting hole 103 ensures that the grinding wheel 100 is centered on the grinding stone 2, achieving rapid and accurate positioning of the grinding wheel 100 on the grinding stone 2, facilitating the quick installation of the grinding wheel 100. At the same time, the engagement of the second mounting rod 22 with the second mounting hole 103 also enhances the stability of the grinding wheel 100 on the grinding stone 2, preventing the grinding wheel 100 from shaking during the dressing process, reducing dressing errors caused by shaking, and ensuring a smooth dressing process.

[0069] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A dressing device for dressing a grinding wheel (100), characterized in that, include: Workbench (1); A grinding stone (2), which is connected to the worktable (1) and is used to support the grinding wheel (100); The pressure element (3) is located above the grinding stone (2); A lifting mechanism (4) is connected to the pressure member (3) and can drive the pressure member (3) closer to the grinding stone (2) to press the pressure member (3) against the grinding wheel (100).

2. The trimming device according to claim 1, characterized in that, The grinding wheel (100) has a downward protruding first mounting rod (101) connected to the bottom center, and the grinding stone (2) has a first mounting hole (21) at the top center for the first mounting rod (101) to be inserted.

3. The trimming device according to claim 1, characterized in that, The grinding wheel (100) has a second mounting hole (103) at the bottom center, and the grinding stone (2) has a second mounting rod (22) at the top center for embedding into the second mounting hole (103).

4. The trimming device according to claim 1, characterized in that, A connecting rod (102) protruding upward is connected to the top center of the grinding wheel (100); The pressure member (3) includes a pressure rod (31), and the lifting mechanism (4) is connected to the upper end of the pressure rod (31) and can drive the pressure rod (31) close to the grinding stone (2) so that the bottom of the pressure rod (31) abuts against the top of the connecting rod (102).

5. The trimming device according to claim 4, characterized in that, The connecting rod (102) has a circular structure, and the clamping rod (31) has a circular structure; The diameter of the clamping rod (31) is larger than the diameter of the connecting rod (102).

6. The trimming device according to claim 4, characterized in that, The central axis of the grinding stone (2) coincides with the central axis of the clamping rod (31).

7. The trimming device according to claim 4, characterized in that, The top of the connecting rod (102) is recessed downwards with a positioning hole (1021); The pressure member (3) also includes a positioning rod (32), which is connected to the lower end of the clamping rod (31) and is used to insert into the positioning hole (1021).

8. The trimming device according to claim 1, characterized in that, The lifting mechanism (4) includes a support member (41), a mounting plate (42), a screw (43), an adjusting handle (44), and a connecting seat (45). The lower end of the support member (41) is connected to the workbench (1). The mounting plate (42) is connected to the support member (41) and located above the grinding stone (2). The mounting plate (42) has a threaded hole that runs from top to bottom. The screw (43) passes through the threaded hole and is threadedly connected to the threaded hole. The adjusting handle (44) is connected to the upper end of the screw (43) and located above the mounting plate (42). The connecting seat (45) is connected to the screw (43) and located below the mounting plate (42). The pressure member (3) is connected to the lower end of the connecting seat (45).

9. The trimming device according to any one of claims 1-8, characterized in that, It also includes a drive mechanism (5), which is connected to the worktable (1) and is used to cause relative rotation between the grinding wheel (100) and the grinding stone (2).

10. The trimming device according to claim 9, characterized in that, The drive mechanism (5) includes a drive member (51), a drive wheel (52) and an annular transmission belt (53). The drive member (51) is connected to the drive wheel (52) and can drive the drive wheel (52) to rotate around the central axis of the drive wheel (52). The drive wheel (52) is connected to the grinding wheel (100) through the annular transmission belt (53).

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