A press plate type dynamic balancing ring for large disc cutter

Abstract

This utility model discloses a pressure plate type dynamic balancing ring for large disc cutters, including a tool holder, a balance seat, and a clamping screw that are fitted together. The tool holder, balance seat, and clamping screw are coaxially arranged. The balance seat is disc-shaped and has several counterweight mounting holes arranged in a circular array. The circular array of counterweight mounting holes forms a set of counterweight adjustment structures. The counterweight adjustment structures are concentric with the balance seat, and the axial direction of the balance seat is the same as the axial direction of the counterweight mounting holes. This utility model has both pressure plate and dynamic balancing adjustment functions, reducing structural redundancy. It also allows for the replacement of balance seats of different volumes to accommodate different sizes of large disc cutters, making it more adaptable. Furthermore, it significantly reduces the risk of counterweights flying off, further reducing safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a pressure plate type dynamic balancing ring for a large disc cutter. Background Technology

[0002] In the existing technology, there are two ways to adjust the dynamic balance of a tool holder with a large disc cutter type high-speed rotation: First, directly drill holes in the large disc cutter to remove material and achieve the dynamic balance requirement. However, this method involves repeatedly drilling holes in the grinding wheel, which will cause the large grinding wheel to become unusable and scrapped after a few uses. Second, balance adjustment is achieved by installing a dynamic balance ring with counterweights on it.

[0003] The current dynamic balancing rings have the following drawbacks: First, existing dynamic balancing rings only have a single function, meaning they can only be used as dynamic balancing rings. This requires that a space be left on the high-speed rotary tool holder for the installation of the dynamic balancing ring. In other words, during assembly, at least a pressure plate, dynamic balancing ring, rotary tool, and tool holder are needed simultaneously, which results in an increase in the length and weight of the rotary structure. Second, in existing dynamic balancing rings, the counterweight used to adjust the dynamic balance is fixed in the radial direction of the ring. However, when the rotating body rotates at high speed, there will be radial centrifugal force. Under mechanical vibration, there is a risk that the counterweight may fly off after long-term use. Utility Model Content

[0004] The purpose of this invention is to provide a pressure plate type dynamic balancing ring for large disc cutters, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure plate type dynamic balancing ring for a large disc cutter, comprising a tool holder, a balance seat, and a clamping screw that are fitted together. The tool holder, balance seat, and clamping screw are coaxially arranged. The balance seat is disc-shaped and has a plurality of counterweight mounting holes arranged in a circular array. The plurality of counterweight mounting holes arranged in a circular array form a set of counterweight adjustment structures. The counterweight adjustment structures are concentrically arranged with the balance seat, and the axial direction of the balance seat is the same as the axial direction of the counterweight mounting holes.

[0006] Preferably, the counterweight adjustment structure is provided in several groups, and the diameter of the several groups of counterweight adjustment structures gradually increases from the inside to the outside, and the diameter of the several counterweight mounting holes located in the same counterweight adjustment structure is the same.

[0007] Preferably, the number of counterweight mounting holes included in several sets of counterweight adjustment structures is the same.

[0008] Preferably, in any two adjacent sets of counterweight adjustment structures, the diameter of the counterweight mounting hole in the inner ring is smaller than the diameter of the counterweight mounting hole in the outer ring.

[0009] Preferably, in any two adjacent sets of counterweight adjustment structures, the diameter of the counterweight mounting hole in the inner ring is larger than the diameter of the counterweight mounting hole in the outer ring.

[0010] Preferably, the clamping screw includes an integrally formed clamping end and a threaded end, and a through hole is provided at the center of the balance seat for the threaded end of the clamping screw to pass through. The bottom of the tool holder is provided with a threaded hole that matches the threaded end of the clamping screw. After the threaded end passes through the through hole, it is threadedly connected to the threaded hole, and the clamping end abuts against the bottom of the balance seat.

[0011] Preferably, the tool holder includes an integrally formed sleeve portion, a connecting body, and a sleeve portion, wherein a limiting structure is formed between the sleeve portion and the balance seat.

[0012] Preferably, it also includes a grinding wheel, the grinding wheel having a fitting opening at its center that is adapted to the fitting part, the fitting part being inserted into the fitting opening and fitting together, the bottom surface of the fitting part abutting against the balance seat, the grinding wheel being installed in the limiting structure, and the upper and lower end faces of the grinding wheel abutting against the fitting part and the balance seat respectively.

[0013] Preferably, the bottom of the grinding wheel is provided with a limiting groove that matches the shape of the balance seat, and the balance seat is embedded in the limiting groove.

[0014] Preferably, a set screw is detachably installed in the counterweight mounting hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model features a balance seat in the shape of a disc with several counterweight holes arranged in a circular array. Dynamic balance adjustment can be achieved by installing counterweights. It also has the functions of pressure plate and dynamic balance adjustment, reducing structural redundancy. Furthermore, different volume balance seats can be replaced according to the different volumes of the large disc cutter, making it more adaptable.

[0017] 2. The axial direction of the balance seat of this utility model is the same as the axial direction of the counterweight mounting hole. When the dynamic balance ring rotates at high speed, the counterweight generates centrifugal force. The counterweight and the balance seat are fixedly connected to form a locking direction. The locking direction is perpendicular to the centrifugal force direction, which greatly reduces the risk of the counterweight flying out and further reduces safety hazards. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of the structure of the first embodiment of the present invention;

[0020] Figure 3This is a cross-sectional view of the first embodiment of the present invention;

[0021] Figure 4 This is a bottom view of the first embodiment of the present invention;

[0022] Figure 5 This is an exploded view of the structure of the second embodiment of the present invention;

[0023] Figure 6 This is a bottom view of the second embodiment of the present invention. Detailed Implementation

[0024] 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 protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Please see Figures 1 to 4 The first embodiment of this utility model provides a pressure plate type dynamic balancing ring for a large disc cutter, including a tool holder 1, a balance seat 2, a grinding wheel 3, and a clamping screw 4 that are fitted together. The tool holder 1, the balance seat 2, the grinding wheel 3, and the clamping screw 4 are coaxially arranged. The balance seat 2 is disc-shaped and can be used as a pressure plate or as a dynamic balancing ring. This structure can reduce structural redundancy and can replace balance seats of different volumes according to the different volumes of the large disc cutter, making it more adaptable.

[0027] The clamping screw 4 includes an integrally formed clamping end 41 and a threaded end 42, and the center of the balance seat 2 has a through hole 21 through which the threaded end 32 of the clamping screw 3 can pass. The bottom of the tool holder 1 is provided with a threaded hole 11 that matches the threaded end 41 of the clamping screw 4. The tool holder 1 includes an integrally formed sleeve part 12, a connecting body 13, and a sleeve part 14. A limiting structure is formed between the sleeve part 12 and the balance seat 2. This limiting structure is used to install the grinding wheel 3. The center of the grinding wheel 3 is provided with a sleeve opening 31 that matches the sleeve part 14. The sleeve part 14 can be inserted into the sleeve opening 13 to fit. The bottom of the grinding wheel 3 is also provided with a limiting groove 32 that matches the shape of the balance seat 2.

[0028] During assembly, the balance seat 2 is embedded in the limiting groove 32 at the bottom of the grinding wheel 3, and the circumferential end face of the balance seat 2 is tightly fitted with the inner end face of the limiting groove 32. This structure further reduces the overall length of the dynamic balancing ring. Then, the sleeve part 14 of the tool holder 1 passes through the sleeve opening 31, and the bottom surface of the sleeve part 14 abuts against the balance seat 2. Finally, the threaded end 32 of the clamping screw 4 passes through the through hole 21 and is threadedly connected to the threaded hole 11, and the clamping end 31 abuts against the bottom of the balance seat 2. The balance seat 2 and the sleeve part 13 clamp the upper and lower end faces of the grinding wheel 3 to achieve overall fixed assembly.

[0029] The balance seat 2 has several counterweight mounting holes 22 arranged in a circular array. These circular mounting holes 22 form a counterweight adjustment structure. The counterweight adjustment structure is concentric with the balance seat 2, and the axial direction of the balance seat 2 is the same as the axial direction of the counterweight mounting holes 22. When the dynamic balancing ring rotates at high speed, the counterweight generates centrifugal force. The counterweight is fixedly connected to the balance seat 2 to form a locking direction, which is perpendicular to the centrifugal force direction. This greatly reduces the risk of the counterweight flying out and further reduces safety hazards.

[0030] In this embodiment, the counterweight adjustment structure is provided in two sets. The diameter of the two sets of counterweight adjustment structures gradually increases from the inside to the outside. The diameter of several counterweight mounting holes 22 located in the same counterweight adjustment structure is the same, and the diameter of the counterweight mounting holes 22 located in the inner ring is smaller than that of the counterweight mounting holes 22 located in the outer ring. Larger counterweights are installed in the counterweight mounting holes 22 located in the outer ring to achieve approximate balance adjustment. Then, smaller counterweights are installed in the counterweight mounting holes 22 located in the inner ring for further precise dynamic balance adjustment, thereby improving adjustment efficiency.

[0031] In this embodiment, a set screw 23 is detachably installed in the counterweight mounting hole 22. The counterweight mounting hole 22 is a screw hole that is adapted to the set screw 23. The counterweight is replaced by the set screw 23. The set screw 23 is threadedly connected to the counterweight mounting hole 22, which optimizes the assembly method of the counterweight and the balance seat 2 and reduces the assembly difficulty.

[0032] Furthermore, the set screw 23 can be made of different lengths and materials (copper, aluminum alloy, acetal, plastic, etc.) to achieve different weights, allowing for more precise adjustment of dynamic balance.

[0033] Furthermore, a countersunk hole 24 is provided at the bottom of the set screw 23; in this embodiment, the countersunk hole 24 is a hexagonal countersunk hole, which makes it convenient for the user to rotate the set screw 23 with a screwdriver so that the set screw 23 is threadedly connected to the counterweight mounting hole 22.

[0034] In other embodiments, the counterweight adjustment structure may be provided in several groups, and the number of counterweight adjustment structures is not limited; and the diameter of the several groups of counterweight adjustment structures gradually increases from the inside to the outside, and the diameter of the several counterweight mounting holes 22 located in the same counterweight adjustment structure is the same; the number of counterweight mounting holes 22 contained in the several groups of counterweight adjustment structures is the same; for any two adjacent groups of counterweight adjustment structures, the diameter of the counterweight mounting holes 22 located in the inner circle is smaller than the diameter of the counterweight mounting holes 22 located in the outer circle.

[0035] In other embodiments, the counterweight adjustment structure may be provided in several groups, and the number of counterweight adjustment structures is not limited; and the diameter of the several groups of counterweight adjustment structures gradually increases from the inside to the outside, and the diameter of the several counterweight mounting holes 22 located in the same counterweight adjustment structure is the same; the number of counterweight mounting holes 22 contained in the several groups of counterweight adjustment structures is the same; for any two adjacent groups of counterweight adjustment structures, the diameter of the counterweight mounting holes 22 located in the inner circle is larger than the diameter of the counterweight mounting holes 22 located in the outer circle.

[0036] Furthermore, the top edge of the balance seat 2 is chamfered, and the chamfer gradually slopes downward from top to bottom, making it easier for the balance seat 2 to be embedded in the limiting groove 32.

[0037] Furthermore, the bottom edge of the counterweight mounting hole 22 is chamfered, and the chamfer gradually slopes downward from top to bottom, making it easier for the counterweight to be inserted into the counterweight mounting hole 22.

[0038] Furthermore, the sleeve portion 14 of the tool holder 1 is used to connect to the rotating module, which can be a drive mechanism such as a motor that drives the dynamic balance ring to rotate at high speed; and the connecting body 13 of the tool holder 1 is provided with a locking groove 15, which is used for the fitting assembly of the tool holder 1 and the rotating module.

[0039] Please see Figures 5 to 6 The first embodiment of this utility model provides a pressure plate type dynamic balancing ring for a large disc cutter, including a tool holder 1, a balance seat 2, a grinding wheel 3, and a clamping screw 4 that are fitted together. The tool holder 1, the balance seat 2, the grinding wheel 3, and the clamping screw 4 are coaxially arranged. The balance seat 2 is disc-shaped and can be used as a pressure plate or as a dynamic balancing ring. This structure can reduce structural redundancy and can replace balance seats of different volumes according to the different volumes of the large disc cutter, making it more adaptable.

[0040] The clamping screw 4 includes an integrally formed clamping end 41 and a threaded end 42, and the center of the balance seat 2 has a through hole 21 through which the threaded end 32 of the clamping screw 3 can pass. The bottom of the tool holder 1 is provided with a threaded hole 11 that matches the threaded end 41 of the clamping screw 4. The tool holder 1 includes an integrally formed sleeve part 12, a connecting body 13, and a sleeve part 14. A limiting structure is formed between the sleeve part 12 and the balance seat 2. This limiting structure is used to install the grinding wheel 3. The center of the grinding wheel 3 is provided with a sleeve opening 31 that matches the sleeve part 14. The sleeve part 14 can be inserted into the sleeve opening 13 to fit. The bottom of the grinding wheel 3 is also provided with a limiting groove 32 that matches the shape of the balance seat 2.

[0041] During assembly, the balance seat 2 is embedded in the limiting groove 32 at the bottom of the grinding wheel 3, and the circumferential end face of the balance seat 2 is tightly fitted with the inner end face of the limiting groove 32. This structure further reduces the overall length of the dynamic balancing ring. Then, the sleeve part 14 of the tool holder 1 passes through the sleeve opening 31, and the bottom surface of the sleeve part 14 abuts against the balance seat 2. Finally, the threaded end 32 of the clamping screw 4 passes through the through hole 21 and is threadedly connected to the threaded hole 11, and the clamping end 31 abuts against the bottom of the balance seat 2. The balance seat 2 and the sleeve part 13 clamp the upper and lower end faces of the grinding wheel 3 to achieve overall fixed assembly.

[0042] The balance seat 2 has several counterweight mounting holes 22 arranged in a circular array. These circular mounting holes 22 form a counterweight adjustment structure. The counterweight adjustment structure is concentric with the balance seat 2, and the axial direction of the balance seat 2 is the same as the axial direction of the counterweight mounting holes 22. When the dynamic balancing ring rotates at high speed, the counterweight generates centrifugal force. The counterweight is fixedly connected to the balance seat 2 to form a locking direction, which is perpendicular to the centrifugal force direction. This greatly reduces the risk of the counterweight flying out and further reduces safety hazards.

[0043] In this embodiment, the counterweight adjustment structure is provided with a set of several counterweight mounting holes 22 with the same diameter. By installing counterweight blocks on the counterweight mounting holes 22, balance adjustment is achieved.

[0044] Other technical features are the same as in the first embodiment and will not be described again.

[0045] Compared with the first embodiment, the second embodiment can reduce the production difficulty of the balance seat 2 and reduce the processing cost of the balance seat 2.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pressure plate type dynamic balancing ring for large disc cutters, comprising a tool holder, a balancing seat, and a clamping screw that are fitted together, characterized in that: The tool holder, balance seat, and clamping screw are coaxially arranged. The balance seat is disc-shaped and has several counterweight mounting holes arranged in a circular array. The several counterweight mounting holes arranged in a circular array form a set of counterweight adjustment structures. The counterweight adjustment structures are concentrically arranged with the balance seat, and the axial direction of the balance seat is the same as the axial direction of the counterweight mounting holes.

2. The pressure plate type dynamic balancing ring for large disc cutters according to claim 1, characterized in that: The counterweight adjustment structure is provided in several groups, and the diameter of the several groups of counterweight adjustment structures gradually increases from the inside to the outside. The diameter of the several counterweight mounting holes located in the same counterweight adjustment structure is the same.

3. The pressure plate type dynamic balancing ring for large disc cutters according to claim 1, characterized in that: The number of counterweight mounting holes contained in several sets of the counterweight adjustment structures is the same.

4. The pressure plate type dynamic balancing ring for a large disc cutter according to claim 3, characterized in that: For any two adjacent counterweight adjustment structures, the diameter of the counterweight mounting hole in the inner ring is smaller than the diameter of the counterweight mounting hole in the outer ring.

5. A pressure plate type dynamic balancing ring for a large disc cutter according to claim 3, characterized in that: For any two adjacent sets of counterweight adjustment structures, the diameter of the counterweight mounting hole in the inner ring is larger than the diameter of the counterweight mounting hole in the outer ring.

6. The pressure plate type dynamic balancing ring for large disc cutters according to claim 1, characterized in that: The clamping screw includes an integrally formed clamping end and a threaded end, and a through hole is provided at the center of the balance seat for the threaded end of the clamping screw to pass through. The bottom of the tool holder is provided with a threaded hole that matches the threaded end of the clamping screw. After the threaded end passes through the through hole, it is threadedly connected to the threaded hole, and the clamping end abuts against the bottom of the balance seat.

7. A pressure plate type dynamic balancing ring for a large disc cutter according to claim 1, characterized in that: The tool holder includes an integrally formed sleeve portion, a connecting body, and a connecting portion, with a limiting structure formed between the sleeve portion and the balance seat.

8. A pressure plate type dynamic balancing ring for a large disc cutter according to claim 7, characterized in that: It also includes a grinding wheel, the center of which is provided with a fitting opening that matches the fitting part. The fitting part is inserted into the fitting opening and fitted together. The bottom surface of the fitting part abuts against the balance seat. The grinding wheel is installed in the limiting structure, and the upper and lower end faces of the grinding wheel abut against the fitting part and the balance seat, respectively.

9. A pressure plate type dynamic balancing ring for a large disc cutter according to claim 8, characterized in that: The bottom of the grinding wheel is provided with a limiting groove that matches the shape of the balance seat, and the balance seat is embedded in the limiting groove.

10. A pressure plate type dynamic balancing ring for a large disc cutter according to any one of claims 1 to 9, characterized in that: A set screw is detachably installed in the counterweight mounting hole.

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