Polishing assembly and polishing equipment
By designing the matching column and elastic element of the grinding head and floating component, the offset problem of existing equipment in grinding complex workpieces was solved, achieving efficient and precise grinding effect, and improving processing quality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MOTIC (XIAMEN) INTELLIGENT ELECTRIC CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-10
AI Technical Summary
Existing grinding equipment is prone to deviation when grinding workpieces with complex structures, resulting in reduced processing accuracy, workpiece damage, increased production costs and safety hazards, as well as low processing efficiency.
A grinding assembly including a grinding head and a floating component was designed. By matching the eccentric hole of the workpiece with the mating column, the rotation axis of the grinding head is ensured to coincide with the axis of the annular groove. The elastic element is used to absorb vibration and achieve stable grinding.
This ensures the stability and precision of the grinding process, avoids workpiece damage, improves processing efficiency and safety, and reduces production costs.
Smart Images
Figure CN224102519U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical processing technical field especially, relate to a kind of polishing assembly and polishing equipment. BACKGROUND
[0002] There are some workpieces in prior art, annular groove is set in one end face, the middle part of the end face has cylindrical protrusion, a plurality of eccentric holes are set on the cylindrical protrusion;For this kind of workpiece with special structure, in actual production and processing process, the side line of annular groove is often finely polished using special polishing equipment.Processing purpose is to make the inside wall of annular groove and workpiece end face can be more smooth, smooth transition, so as to improve the quality and performance of workpiece.However, the existing polishing equipment faces many challenges when dealing with these workpieces with complex structure.
[0003] Due to the complexity and irregularity of the structure of workpiece, the existing polishing equipment is easy to deviate relative to workpiece when polishing the annular groove of these workpieces by artificial or automatic.This deviation may be caused by many factors, such as insufficient positioning accuracy of polishing equipment, unstable fixation of workpiece during processing, vibration interference during polishing, etc.Once deviation occurs, it will lead to a significant reduction in the processing accuracy of workpiece.The side line of annular groove that should be polished accurately in place may be over-polished or under-polished due to deviation, thereby affecting the dimensional accuracy and shape accuracy of workpiece.
[0004] Moreover, this processing deviation may also cause damage to workpiece.During polishing process, if violent collision or friction occurs between polishing equipment and workpiece, it may cause scratches, depressions and other damage to the surface of workpiece, and even may cause structural damage to workpiece, so that it cannot be used normally.This not only causes waste of raw materials, but also increases production cost and production cycle.
[0005] In addition, due to the difficulty in ensuring processing accuracy, the processing efficiency of workpiece is also seriously affected.In the polishing process, once deviation occurs, additional time and effort are needed for adjustment and correction, which will undoubtedly reduce the efficiency of the entire processing process.Furthermore, due to the high risk of defective products in the processing process, in order to ensure the quality of the final product, additional detection and rework links are often needed, which further reduces the processing efficiency.
[0006] From the perspective of product quality, due to the existence of the above problems, the processing yield of workpiece is also at a low level.A large number of workpieces cannot meet the qualified standard during processing due to various reasons, and need to be scrapped or reworked, which not only increases the production cost of enterprise, but also affects the market competitiveness of enterprise.
[0007] More seriously, in some cases, the offset problem of the polishing device can even cause serious safety problems. For example, if the polishing device collides violently with the workpiece during the offset process, it may cause damage to the device, parts flying, and other dangerous situations, which poses a threat to the personal safety of the operator. Utility Model Content
[0008] Therefore, the utility model aims at overcoming the deficiencies in the prior art, and provides a polishing assembly and a polishing device.
[0009] The utility model provides the following technical scheme:
[0010] A polishing assembly comprises a polishing head and a floating assembly.
[0011] The polishing head is provided with a connecting seat, the connecting seat is used for being connected with a driving member of a polishing device, and the driving member is used to drive the polishing head to rotate. A cylindrical floating cavity is arranged in the polishing head. An end surface of the polishing head away from the connecting seat is provided with an opening in communication with the floating cavity. A polishing part is arranged on the side wall of the polishing head. The floating assembly is arranged in the floating cavity. An elastic member is arranged between the floating assembly and the cavity bottom of the floating cavity. The floating assembly comprises a plurality of matching columns corresponding to eccentric holes of a workpiece to be polished. The matching columns pass through the opening. The axis of the matching columns is parallel to the rotation axis of the polishing head. After each matching column passes through the corresponding eccentric hole of the workpiece, the rotation axis of the polishing head coincides with the axis of the annular groove of the workpiece.
[0012] As a further improvement of the above technical scheme, the floating assembly further comprises a cylindrical member and a connecting rod. The connecting rod passes through the cylindrical member and the polishing head in sequence. Limiting parts are arranged at both ends of the connecting rod. The limiting parts are used to limit the relative position of the cylindrical member and the polishing head. The matching columns are arranged on the cylindrical member. The elastic member is arranged between the cavity bottom of the floating cavity and the cylindrical member.
[0013] As a further improvement of the above technical scheme, the elastic member is a spring. The spring is sleeved on the connecting rod.
[0014] As a further improvement of the above technical scheme, the cavity bottom of the floating cavity is provided with an accommodating groove close to the circumferential side of the connecting rod. At least part of the spring enters the accommodating groove.
[0015] As a further improvement of the above technical scheme, an intermediate plate is arranged between the spring and the cylindrical member. The end portion of the spring close to the cylindrical member abuts on the intermediate plate.
[0016] As a further improvement of the above technical solution, a floating rod is arranged on the polishing head, one end of the floating rod is arranged into the floating cavity and is fixedly connected with the intermediate plate, and the axis of the floating rod is parallel to the rotating axis of the polishing head.
[0017] As a further improvement of the above technical solution, at least part of the end of the floating rod, which is away from the intermediate plate, is arranged to pass out from the end surface of the polishing head close to the connecting seat.
[0018] As a further improvement of the above technical solution, a first transmission bearing is arranged between the intermediate plate and the cylindrical member, and a second transmission bearing is arranged between the cylindrical member and the limiting part on the end of the connecting rod, which is away from the polishing head.
[0019] As a further improvement of the above technical solution, the first transmission bearing and the second transmission bearing are both thrust needle bearings.
[0020] The utility model also provides a kind of polishing equipment, including driving part and the polishing assembly as any one of the above, the driving part is transmission connection with the polishing assembly.
[0021] Compared with the related art, the utility model has the beneficial effects that:
[0022] The polishing assembly provided by the utility model, when polishing the annular groove edge line of the workpiece to be processed, first, the operator will drive the polishing head of the polishing assembly to be transmission connected with the driving part, to ensure that the connection between the two is stable and reliable. Then, the multiple matching columns of the floating assembly are respectively and accurately inserted into the eccentric holes of the corresponding workpiece. In this process, due to the ingenious cooperation of the matching column and the eccentric hole, the rotating axis of the polishing head can coincide with the axis of the annular groove. This design greatly ensures the coaxiality and uniformity of subsequent polishing of the annular groove edge line, thereby fundamentally ensuring the machining accuracy.
[0023] After the above preparation is completed, the operator can start the driving part to drive the polishing head to start rotating. At this time, the floating assembly and the workpiece will maintain a certain degree of relative static state to ensure the stability of the polishing process. Then, the operator will push the polishing head to gradually approach the annular groove of the workpiece until the polishing part of the polishing head can be attached to the side edge line of the annular groove. At this time, the polishing work officially starts, and the polishing part will finely polish the side edge line of the annular groove of the workpiece. In this process, as the polishing head continuously rotates and advances, the elastic member between the floating assembly and the cavity bottom of the floating cavity will be gradually compressed. Due to the ingenious arrangement of the elastic member, there is a floating connection between the floating cavity and the floating assembly, so that the vibration generated by the polishing head during the polishing process can be effectively absorbed and buffered, thereby greatly reducing the influence on the workpiece.
[0024] The design not only avoids secondary vibration influence on the workpiece during the polishing process, but also ensures that the machining precision of the workpiece can be guaranteed to the greatest extent. At the same time, since the occurrence of the reverse vibration phenomenon is effectively avoided, the entire polishing process is more safe and reliable, and a more stable working environment is provided for the operator. Finally, when the rotating axis of the polishing head and the axis of the annular groove of the workpiece are completely coincident, the entire polishing work can be efficiently and accurately completed.
[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0027] Figure 1 Fig. 1 shows a perspective view of the structure of the polishing assembly in one embodiment of the present application;
[0028] Figure 2 Fig. 2 shows another perspective view of the structure of the polishing assembly in one embodiment of the present application;
[0029] Figure 3 Fig. 3 shows a sectional view of the structure of the polishing assembly in one embodiment of the present application;
[0030] Figure 4 Fig. 4 shows a perspective view of the structure of the workpiece to be machined in one embodiment of the present application.
[0031] Explanation of main element symbols:
[0032] 100-polishing head; 110-connection seat; 120-floating cavity; 121-opening; 122- accommodating groove; 130-polishing part; 140-floating rod; 200-floating assembly; 210-elastic member; 220-matching column; 230-cylindrical member; 240-connection rod; 241-limiting part; 250-intermediate plate; 260-first transmission bearing; 270-second transmission bearing; 300-workpiece; 310- eccentric hole; 320-annular groove. DETAILED DESCRIPTION
[0033] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and cannot be understood as limiting the present application.
[0034] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0035] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0036] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0037] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0038] In combinationFigures 1 to 3 The embodiment of the utility model provides a polishing assembly for processing such as Figure 4 The workpiece 300 shown in the utility model, the polishing assembly comprises a polishing head 100, a floating assembly 200.
[0039] The polishing head 100 is provided with a connecting seat 110, the connecting seat 110 is used for connecting with the driving piece of polishing equipment, and the driving piece is used to drive the rotation of the polishing head 100, the polishing head 100 is provided with a cylindrical floating cavity 120, the end face of the polishing head 100 away from the connecting seat 110 is provided with an opening 121 in communication with the floating cavity 120, the side wall of the polishing head 100 is provided with a polishing part 130, the floating assembly 200 is installed in the floating cavity 120, the floating assembly 200 and the cavity bottom of the floating cavity 120 are provided with an elastic piece 210, the floating assembly 200 can be relatively telescopic and relatively rotatable with respect to the polishing head 100, the floating assembly 200 comprises a matching column 220, the matching column 220 is provided with a plurality of corresponding eccentric holes 310 of the workpiece 300 to be polished, and the matching column 220 passes out from the opening 121, the axis of the matching column 220 is parallel with the rotation axis of the polishing head 100, after each matching column 220 passes into the corresponding eccentric hole 310 of the workpiece 300, the rotation axis of the polishing head 100 coincides with the axis of the annular groove 320 of the workpiece 300.
[0040] The polishing assembly provided by the embodiment can polish the annular groove 320 of the workpiece 300 to be processed, first, the operator will drive the polishing head 100 of the polishing assembly to be connected with the driving piece through the connecting seat 110, to ensure that the connection between the two is stable and reliable, then, the plurality of matching columns 220 of the floating assembly 200 are respectively inserted into the corresponding eccentric holes 310 of the workpiece 300 accurately, in the process, due to the cooperation of the matching column 220 and the eccentric hole 310, the rotation axis of the polishing head 100 can coincide with the axis of the annular groove 320, this design greatly ensures the coaxiality and uniformity of the subsequent polishing of the annular groove 320, thereby fundamentally guaranteeing the machining precision.
[0041] After the above preparation is completed, the operator can start the driving member to drive the polishing head 100 to start rotating. At this time, the floating assembly 200 and the workpiece 300 will remain a certain degree of relative static state to ensure the stability of the polishing process. Then, the operator will push the polishing head 100 to gradually approach the annular groove 320 of the workpiece 300 until the polishing part 130 of the polishing head 100 can be attached to the side edge line of the annular groove 320. At this time, the polishing work is formally started, and the polishing part 130 will finely polish the side edge line of the annular groove 320 of the workpiece 300. In this process, as the polishing head 100 is continuously rotated and pushed, the elastic member 210 between the floating assembly 200 and the bottom of the floating cavity 120 will be gradually compressed. Due to the ingenious arrangement of the elastic member 210, the floating connection between the floating cavity 120 and the floating assembly 200 is formed, so that the vibration generated by the polishing head 100 during the polishing process can be effectively absorbed and buffered, thereby greatly reducing the influence on the workpiece 300.
[0042] This design not only avoids the secondary vibration influence of the workpiece 300 during the polishing process of the embodiment, but also ensures that the machining precision of the workpiece 300 can be guaranteed to the greatest extent. At the same time, due to the effective avoidance of the occurrence of the reverse vibration phenomenon, the entire polishing process is more safe and reliable, and a more stable working environment is provided for the operator. Finally, when the rotation axis of the polishing head 100 and the axis of the annular groove 320 of the workpiece 300 completely coincide, the entire polishing work can be efficiently and accurately completed.
[0043] In some specific embodiments, the floating assembly 200 further comprises a cylindrical member 230 and a connecting rod 240, the connecting rod 240 is sequentially provided through the cylindrical member 230 and the polishing head 100, and the axis of the connecting rod 240 coincides with the rotation axis of the polishing head 100. This design makes the connecting rod 240 maintain a stable posture during the polishing process, thereby ensuring the stability of the entire floating assembly 200.
[0044] Limiting portions 241 are arranged at both ends of the connecting rod 240. These limiting portions 241 are crucial, which are used to limit the relative position between the cylindrical member 230 and the polishing head 100. The specific form of the limiting portion 241 can be diversified, for example, bolts, bosses, snap rings and other components can be used to achieve it.
[0045] The matching columns 220 are arranged on the cylindrical member 230, which correspond to the eccentric hole 310 of the workpiece 300 to be polished, ensuring that they can be accurately inserted and positioned during the polishing process, and the elastic member 210 is located between the bottom of the floating cavity 120 and the cylindrical member 230.
[0046] By making the connecting rod 240 sequentially pass through the cylindrical member 230 and the polishing head 100, and setting the limiting portion 241 at both ends of the connecting rod 240, this design brings two significant advantages. On the one hand, it ensures that the polishing head 100 and the cylindrical member 230 can maintain stable coaxiality when relative rotation occurs. This is crucial for improving machining accuracy, as any slight deviation can lead to undesirable polishing results. On the other hand, this design also allows precise control of the displacement range of the polishing head 100 relative to the floating assembly 200, ensuring reliable use of the embodiment.
[0047] In some specific embodiments, the elastic member 210 is a spring, which as a common elastic element has many significant advantages. First, its cost is relatively low, which effectively controls the cost of the entire polishing assembly and makes it more marketable. Second, the working principle of the spring is simple and intuitive, and its elastic deformation and recovery process is easy to understand, which greatly reduces the difficulty of use and maintenance. Furthermore, the maintenance of the spring is also very convenient, generally only routine inspection and replacement are needed, without complex operation procedures.
[0048] In specific designs, the spring is sleeved on the connecting rod 240. Because the spring can easily deflect and deform when compressed without proper support and guidance, affecting its use effect. By sleeving the spring on the connecting rod 240, this problem can be effectively avoided. The connecting rod 240 provides a stable support and guidance for the spring, ensuring that the spring can maintain its original shape and elasticity when compressed, thereby greatly improving its use reliability.
[0049] Of course, in other embodiments of the present application, the selection of the elastic member 210 is not limited to the spring. Depending on actual needs and application scenarios, other types of elastic members 210 such as spring sheets can also be selected. Spring sheets also have good elasticity and recovery ability, and in some specific cases, their performance may be better than that of springs.
[0050] In some specific embodiments, the cavity bottom of the floating cavity 120 is provided with a receiving groove 122 near the peripheral side of the connecting rod 240, and at least part of the spring enters the receiving groove 122, so that the spring has an additional buffer space when compressed; Specifically, the receiving groove 122 can be a counterbore with a diameter slightly larger than that of the spring, or a ring groove with an inner and outer diameter matching the spring, which can be set according to needs.
[0051] When the cylindrical member 230 is relatively close to the bottom of the floating cavity 120, the spring will be compressed. At this time, due to the presence of the accommodation groove 122, the spring can smoothly enter the accommodation groove 122. This design effectively avoids the situation that the spring is severely deformed or damaged when it is subjected to excessive extrusion force. Because if there is no accommodation groove 122, the spring may be directly subjected to hard extrusion by the cavity bottom when it is compressed, which can easily lead to loss of elasticity or even breakage of the spring over a long period of time.
[0052] The provision of the accommodation groove 122 provides a relatively loose compression environment for the spring. When the spring is compressed, it can first deform into the accommodation groove 122, thereby dispersing the extrusion force and reducing the risk of spring damage. In this way, the spring can maintain its good elasticity and recovery ability during long-term use, ensuring the reliability and stability of the entire polishing assembly.
[0053] In some specific embodiments, an intermediate plate 250 is provided between the spring and the cylindrical member 230, and specifically, the end of the spring close to the cylindrical member 230 abuts against the intermediate plate 250. Such a layout makes the spring no longer in direct contact with the cylindrical member 230, thereby effectively avoiding the torsional force that the spring may be subjected to when the polishing head 100 rotates relative to the cylindrical member 230. Because in actual work, the rotation of the polishing head 100 is inevitable, and if this rotation is directly transmitted to the spring, it is easy to cause the spring to twist and deform, thereby affecting its elastic properties and service life.
[0054] By providing the intermediate plate 250 to isolate the spring from the cylindrical member 230, the spring only needs to bear its due elastic support function without having to bear additional torsional force. In this way, the spring can work in a more stable and safe environment, ensuring its normal use reliability and stability.
[0055] This design not only improves the service life of the spring, but also further enhances the durability and performance of the entire polishing assembly. In actual application, this design can effectively reduce the failure and damage caused by spring torsion, reduce maintenance costs, and improve production efficiency.
[0056] In some specific embodiments, the floating rod 140 is arranged on the polishing head 100, one end of the floating rod 140 is arranged in the floating cavity 120 and is fixedly connected with the intermediate plate 250, and the axis of the floating rod 140 is parallel to the rotation axis of the polishing head 100. This design plays a crucial role. It limits the intermediate plate 250 to move along the rotation axis of the polishing head 100 relative to the polishing head 100, and cannot rotate relative to the polishing head 100. Such a design avoids the relative rotation of the intermediate plate 250 during the rotation of the polishing head 100, thereby effectively preventing the unnecessary torsion or extrusion of the spring by the intermediate plate 250.
[0057] Since the intermediate plate 250 is in direct contact with the spring, if the intermediate plate 250 rotates, it is likely to rotate the spring together, thereby causing the torsion or deformation of the spring, affecting the elastic performance and service life of the spring. By arranging the floating rod 140, the movement of the intermediate plate 250 is successfully limited in a specific direction, i.e. only moving along the rotation axis of the polishing head 100, thereby ensuring that the spring can maintain a stable posture during polishing and only bear the function of elastic support.
[0058] In some specific embodiments, at least part of the end of the floating rod 140 away from the intermediate plate 250 protrudes from the end surface of the polishing head 100 close to the connecting seat 110; such a design enables the user to intuitively observe the change of the protruding amount of the floating rod 140. During polishing, the protruding amount of the floating rod 140 actually reflects the relative position relationship between the polishing head 100 and the workpiece 300, and the polishing stroke can be indirectly known. By observing the protruding amount of the floating rod 140, the user can more accurately control the polishing process, ensuring the accuracy and effect of polishing.
[0059] In some specific embodiments, the first transmission bearing 260 is arranged between the intermediate plate 250 and the cylindrical member 230, and the second transmission bearing 270 is arranged between the cylindrical member 230 and the limiting portion 241 on the end of the connecting rod 240 away from the polishing head 100; by arranging the first transmission bearing 260 and the second transmission bearing 270, the relative rotation friction between the intermediate plate 250, the cylindrical member 230 and the corresponding limiting portion 241 can be effectively avoided, thereby significantly improving the smoothness of the embodiment and effectively reducing the wear of the parts.
[0060] In some specific embodiments, the first transmission bearing 260 and the second transmission bearing 270 are both thrust needle bearings; such bearings have unique structural and performance characteristics, making them very suitable for application in the polishing assembly. Thrust needle bearings can withstand larger axial loads while maintaining a low coefficient of friction, which helps to reduce the relative rotational friction between the intermediate plate 250, the cylindrical member 230, and the limiting portion 241, improving the smoothness of use of the entire assembly. In addition, thrust needle bearings also have high rotational accuracy and stability, which can ensure smooth operation during high-speed rotation, further enhancing the reliability and durability of the polishing assembly.
[0061] Of course, in other embodiments of the present application, the first transmission bearing 260 and the second transmission bearing 270 are not limited to this type of thrust needle bearing. Depending on the actual application requirements and working environment, we can also choose other types of bearings to replace them. For example, in some occasions that need to withstand larger radial loads, deep groove ball bearings or tapered roller bearings can be selected. These bearings also have excellent performance and stability, and can meet the use requirements under different working conditions.
[0062] The embodiments of the present application also provide a polishing device, which can be divided into fixed large-scale polishing devices and handheld small-scale polishing devices according to different use scenarios. The core components of the polishing device include a driving member and a polishing assembly as described in the above embodiments. The driving member serves as a power source to provide necessary power support for the polishing assembly, ensuring the smooth progress of the polishing process. The polishing assembly is directly responsible for the polishing work of the workpiece 300 to be processed. The driving member is in transmission connection with the polishing assembly. The polishing device has all the beneficial effects of the polishing assembly, which will not be described here.
[0063] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0064] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.
Claims
1. A sharpening assembly characterized by, The application relates to a polishing head (100) and a floating assembly (200) for the polishing head (100). The polishing head (100) is provided with a connecting base (110) for connecting with a driving member of a polishing device, the driving member being used to drive the polishing head (100) to rotate; a cylindrical floating cavity (120) is arranged in the polishing head (100), an end surface of the polishing head (100) away from the connecting base (110) is provided with an opening (121) in communication with the floating cavity (120); and a polishing part (130) is arranged on the side wall of the polishing head (100). The floating assembly (200) is arranged in the floating cavity (120), an elastic member (210) is arranged between the floating assembly (200) and the cavity bottom of the floating cavity (120), the floating assembly (200) comprises a plurality of matching columns (220) arranged in correspondence with eccentric holes (310) of a workpiece (300) to be polished, the matching columns (220) pass through the opening (121), and the axis of the matching columns (220) is parallel to the rotating axis of the polishing head (100). After the matching columns (220) pass into the corresponding eccentric holes (310) of the workpiece (300), the rotating axis of the polishing head (100) coincides with the axis of an annular groove (320) of the workpiece (300).
2. The sharpening assembly of claim 1, wherein, The floating assembly (200) further comprises a cylindrical member (230) and a connecting rod (240), the connecting rod (240) passes through the cylindrical member (230) and the polishing head (100) in sequence, the two ends of the connecting rod (240) are respectively provided with limiting parts (241), the limiting parts (241) are used to limit the relative position of the cylindrical member (230) and the polishing head (100), and the matching columns (220) are arranged on the cylindrical member (230), and the elastic member (210) is located between the cavity bottom of the floating cavity (120) and the cylindrical member (230).
3. The sharpening assembly of claim 2, wherein, The elastic member (210) is a spring, and the spring is sleeved on the connecting rod (240).
4. The sharpening assembly of claim 3, wherein, The cavity bottom of the floating cavity (120) is provided with an accommodating groove (122) close to the circumferential side of the connecting rod (240), and at least part of the spring enters the accommodating groove (122).
5. The sharpening assembly of claim 3, wherein, An intermediate plate (250) is arranged between the spring and the cylindrical member (230), and the end of the spring close to the cylindrical member (230) abuts against the intermediate plate (250).
6. The sharpening assembly of claim 5, wherein, A floating rod (140) is arranged on the polishing head (100), one end of the floating rod (140) passes into the floating cavity (120) and is fixedly connected with the intermediate plate (250), and the axis of the floating rod (140) is parallel to the rotating axis of the polishing head (100).
7. The sharpening assembly of claim 6, wherein, The end of the floating rod (140) away from the intermediate plate (250) at least partially passes out from the end surface of the polishing head (100) close to the connecting base (110).
8. The sharpening assembly of claim 5, wherein, A first transmission bearing (260) is arranged between the intermediate plate (250) and the cylindrical member (230), and a second transmission bearing (270) is arranged between the cylindrical member (230) and the limiting portion (241) on the end of the connecting rod (240) away from the polishing head (100).
9. The sharpening assembly of claim 8, wherein, The first transmission bearing (260) and the second transmission bearing (270) are both thrust needle bearings.
10. A sharpening apparatus characterized by, The polishing assembly as claimed in any one of claims 1 to 9, and a driving member in transmission connection with the polishing assembly.