vibration absorber

Abstract

The application discloses a vibration absorber and belongs to the technical field of vibration reduction. The vibration absorber comprises a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, and a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly. When the rigidity adjusting assembly rotates to different positions relative to the vibration absorbing assembly, the rigidity adjusting assembly can change the rigidity of the vibration absorbing assembly. The rigidity of the vibration absorbing assembly can be changed by adjusting the relative rotation angle between the rigidity adjusting assembly and the vibration absorbing assembly, the natural frequency of the vibration absorbing assembly is changed, the natural frequency of the vibration absorber is equal to the vibration frequency of the workpiece, the vibration energy can be better absorbed, the natural frequency of the vibration absorber can be adjusted by rotating the relative rotation position of the rigidity adjusting assembly and the vibration absorbing assembly for different occasions, the vibration absorber has a better vibration absorbing effect under different vibration frequencies, and the range of vibration frequency to be inhibited is wider.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vibration reduction, in particular to a vibration absorber. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] Thin-walled workpieces are common in the field of aerospace. The cutting process of thin-walled parts is prone to cutting chatter, which can cause surface quality to decline and tool wear to intensify. During the assembly and riveting process of the thin-walled parts of the aircraft skin, the riveting gun impacts the rivets, causing the thin-walled parts to vibrate and generate structural noise, which can harm the physical and mental health of the operators and the precision of precision instruments. The vibration absorber or damper can absorb the vibration of the thin-walled parts. The vibration frequency generated by the thin-walled parts in different situations during the machining process may be different. The vibration absorber or damper has a small range of vibration frequency suppression. This requires the design of different specifications of vibration absorbers or dampers for different application situations, which can cause the decline of the machining efficiency. SUMMARY

[0004] The purpose of the present application is to at least solve the problem of the small range of vibration frequency suppression of the vibration absorber or damper. The purpose is achieved by the following technical solutions:

[0005] The first aspect of the present application provides a vibration absorber, comprising:

[0006] A fixing device for fixing on a workpiece;

[0007] A vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece;

[0008] A stiffness adjusting assembly rotatably connected with the vibration absorbing assembly, the stiffness adjusting assembly being rotated to different positions relative to the vibration absorbing assembly to adjust the stiffness of the vibration absorbing assembly.

[0009] According to the vibration absorber of the present application, by adjusting the relative rotation angle between the stiffness adjusting assembly and the vibration absorbing assembly, the stiffness adjusting assembly can be rotated to different positions relative to the vibration absorbing assembly, the stiffness of the vibration absorbing assembly can be changed, and the natural frequency of the vibration absorbing assembly can be changed, so that the natural frequency of the vibration absorber is equal to the vibration frequency of the workpiece, resonance occurs with the workpiece, the vibration absorber can better absorb the vibration energy, and the natural frequency of the vibration absorber can be adjusted by rotating the relative rotation angle between the stiffness adjusting assembly and the vibration absorbing assembly for different occasions, so that the vibration absorber has good vibration absorption effect at different vibration frequencies, the range of vibration frequency suppression is wide, and the needs of various occasions are met.

[0010] In addition, the vibration absorber according to the present application can also have the following additional technical features:

[0011] In some embodiments of the present application, the vibration absorbing assembly comprises:

[0012] The connecting piece is detachably connected with the fixing device.

[0013] The elastic piece comprises a first connecting portion and at least one cantilever portion, one end of the cantilever portion is connected with the first connecting portion, the first connecting portion is connected with the fixing device, the cantilever portion extends outward in a direction perpendicular to an axis of rotation of the stiffness adjusting assembly relative to the vibration absorbing assembly, the first connecting portion is rotatably connected with the stiffness adjusting assembly, and the stiffness adjusting assembly can be rotated to different positions relative to the vibration absorbing assembly, so that the stiffness adjusting assembly can abut against different positions of the cantilever portion along the length direction of the cantilever portion.

[0014] In some embodiments of the present application, the vibration absorbing assembly further comprises a counterweight piece, and the elastic piece further comprises a second connecting portion, the second connecting portion is connected with the other end of the cantilever portion, and the second connecting portion is connected with the counterweight piece.

[0015] In some embodiments of the present application, the number of cantilever portions is multiple, and the multiple cantilever portions are arranged at intervals around the first connecting portion in a circumferential direction of the axis of rotation of the stiffness adjusting assembly relative to the vibration absorbing assembly.

[0016] In some embodiments of the present application, the stiffness adjusting assembly comprises:

[0017] The shell is arranged on the vibration absorbing assembly, and part of the shell is arranged in abutment with the fixing device.

[0018] The first stiffness adjusting piece is connected with the shell and rotatably connected with the first connecting portion, a plurality of first supporting arms are formed on the first stiffness adjusting piece in a circumferential direction of an axis of rotation of the first stiffness adjusting piece relative to the first connecting portion, and the first supporting arms can abut against different positions of the cantilever portion along the length direction of the cantilever portion when the first stiffness adjusting piece is rotated to different positions relative to the first connecting portion.

[0019] In some embodiments of the present application, the stiffness adjusting assembly further comprises:

[0020] The second stiffness adjusting piece is rotatably connected with the first connecting portion, the axis of rotation of the second stiffness adjusting piece relative to the first connecting portion is coaxial with the axis of rotation of the first stiffness adjusting piece relative to the first connecting portion, a second supporting arm is formed on the second stiffness adjusting piece in a circumferential direction of the axis of rotation of the first stiffness adjusting piece relative to the first connecting portion, an end portion of the second supporting arm is connected with an end portion of the first supporting arm, the first stiffness adjusting piece and the second stiffness adjusting piece are located on two sides of the elastic piece, and the second supporting arm can abut against different positions of the cantilever portion along the length direction of the cantilever portion when the second stiffness adjusting piece is rotated to different positions relative to the first connecting portion.

[0021] In some embodiments of the present application, the first support arm is arc-shaped, and / or the second support arm is arc-shaped.

[0022] In some embodiments of the present application, the fixing device comprises:

[0023] The suction cup is provided with a suction surface on one side surface thereof;

[0024] The suction cup cover is arranged away from the suction surface and on the other side of the suction cup;

[0025] The pull rod is connected to the suction cup at one end thereof, is arranged on the other side of the suction cup, and is arranged through the suction cup cover at the other end thereof; the pull rod is slidably connected to the suction cup cover;

[0026] The suction cup control member is hingedly connected to the other end of the pull rod, and is switchable between a first rotation position and a second rotation position relative to the pull rod; the outer surface of the suction cup control member is provided with a first abutting surface and a second abutting surface; when the suction cup control member is in the first rotation position, the first abutting surface abuts against the suction cup cover; when the suction cup control member is in the second rotation position, the suction cup control member is detachably connected to the connecting member, and the second abutting surface abuts against the suction cup.

[0027] In some embodiments of the present application, the suction cup control member comprises:

[0028] The suction cup control member body is hingedly connected to the other end of the pull rod, and the outer surface of the suction cup control member body is provided with a first abutting surface and a second abutting surface;

[0029] The magnetic suction member is connected to the suction cup control member body; when the suction cup control member is in the second rotation position, the magnetic suction member is magnetically connected to the connecting member.

[0030] In some embodiments of the present application, the connecting member is a magnetic conductive member, the magnetic suction member is a magnetic component; or both the connecting member and the magnetic suction member are magnetic components; or the connecting member is a magnetic component, and the magnetic suction member is a magnetic conductive member. BRIEF DESCRIPTION OF DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0032] Figure 1 An exploded view of a vibration absorber according to an embodiment of the present application is schematically shown;

[0033] Figure 2 A sectional view of a vibration absorber according to an embodiment of the present application is schematically shown;

[0034] Figure 3 Fig. 1 schematically shows a front view of a vibration absorbing assembly according to an embodiment of the present application;

[0035] Figure 4 Fig. 2 schematically shows a front view of a rigidity adjusting assembly according to an embodiment of the present application;

[0036] Figure 5 Fig. 3 schematically shows a perspective view of a rigidity adjusting assembly and a vibration absorbing assembly in a first switching position according to an embodiment of the present application;

[0037] Figure 6 Fig. 4 schematically shows a perspective view of a rigidity adjusting assembly and a vibration absorbing assembly in a second switching position according to an embodiment of the present application;

[0038] Figure 7 Fig. 5 schematically shows an exploded view of a fixing device according to an embodiment of the present application;

[0039] Figure 8 Fig. 6 schematically shows a sectional view of a fixing device when a chuck control member is in a first rotating position according to an embodiment of the present application;

[0040] Figure 9 Fig. 7 schematically shows a sectional view of a fixing device when a chuck control member is in a second rotating position according to an embodiment of the present application;

[0041] Figure 10 Fig. 8 schematically shows a perspective view of a vibration absorber fixed on a tool surface according to an embodiment of the present application.

[0042] The reference signs are as follows:

[0043] 10, fixing device; 11, chuck; 12, chuck cover; 13, pull rod; 14, chuck control member; 141, chuck control member body; 141a, first abutting surface; 141b, second abutting surface; 142, magnetic attraction member; 20, vibration absorbing assembly; 21, connecting member; 22, elastic member; 221, first connecting portion; 222, cantilever portion; 223, second connecting portion; 23, counterweight member; 30, rigidity adjusting assembly; 31, housing; 32, first rigidity adjusting member; 321, first support arm; 33, second rigidity adjusting member; 331, second support arm 331, 40, workpiece. DETAILED DESCRIPTION

[0044] Example embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0045] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0046] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0047] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can encompass different orientations of the device in use or operation, depending on the particular context in which it is used. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0048] Reference will now be made to Figure 1According to the embodiment of the present application, a vibration absorber is provided, comprising a fixing device 10, a vibration absorbing assembly 20 and a rigidity adjusting assembly 30, wherein the fixing device 10 is used for being fixed on a workpiece 40; the vibration absorbing assembly 20 is connected with the fixing device 10, and the vibration absorbing assembly 20 is used for absorbing the vibration of the workpiece 40; the rigidity adjusting assembly 30 is rotatably connected with the vibration absorbing assembly 20, and the rigidity adjusting assembly 30 can change the rigidity of the vibration absorbing assembly 20 when the rigidity adjusting assembly 30 is rotated to different positions relative to the vibration absorbing assembly 20.

[0049] The fixing device 10 can be fixed on the workpiece 40 by means of adsorption, adhesion or clamping, etc., which is not specifically limited herein. When the workpiece 40 is a thin-walled piece, the fixing device 10 is preferably adsorbed on the workpiece 40, which can reduce the deformation of the workpiece 40 and improve the machining quality of the workpiece 40.

[0050] The connection between the vibration absorbing assembly 20 and the fixing device 10 can be detachable or non-detachable, which can be, but is not limited to, plug-in connection, magnetic connection, welding, clamping or screw connection, etc.

[0051] By adjusting the rotational position of the rigidity adjusting assembly 30 relative to the vibration absorbing assembly 20, the rigidity of the vibration absorbing assembly 20 can be changed, and then the natural frequency of the vibration absorbing assembly 20 is changed, so that the natural frequency of the vibration absorber is equal to the vibration frequency of the workpiece 40, resonance occurs with the workpiece 40, the vibration absorber can better absorb the vibration energy, and the natural frequency of the vibration absorber can be adjusted by rotating the adjusting assembly relative to the nozzle assembly for different occasions, so that the vibration absorber has good vibration absorption effect at different vibration frequencies, the range of vibration frequency is wide, and the needs of various occasions are met; and only the rigidity adjusting assembly needs to be rotated, so that the rigidity of the vibration absorbing assembly 20 is changed, and then the natural frequency of the vibration absorber is changed, which has the advantage of convenient adjustment.

[0052] In some embodiments, please refer to Figures 1-3 The vibration absorbing assembly 20 comprises a connecting piece 21 and an elastic piece 22. The connecting piece 21 is detachably connected with the fixing device 10; the elastic piece 22 comprises a first connecting part 221 and at least one cantilever part 222, one end of the cantilever part 222 is connected with the first connecting part 221, the first connecting part 221 is connected with the fixing device 10, the cantilever part 222 extends outwardly along the direction perpendicular to the axis of rotation of the rigidity adjusting assembly 30 relative to the vibration absorbing assembly 20, the first connecting part 221 is rotatably connected with the rigidity adjusting assembly 30, and the rigidity adjusting assembly 30 can be rotated to different positions relative to the vibration absorbing assembly 20, so that the rigidity adjusting assembly 30 can abut against different positions of the cantilever part 222 along the length direction of the cantilever part 222.

[0053] Optionally, the elastic member 22 is plate-shaped, and the elastic member 22 can be made of elastic material, such as steel spring or copper spring.

[0054] The cantilever part 222 is long strip-shaped, and the length direction of the cantilever part 222 is perpendicular to the direction of the axis between the rigidity adjusting assembly 30 and the vibration absorbing assembly 20.

[0055] The connection between one end of the cantilever part 222 and the first connecting part 221 can be, but is not limited to, welding, screw connection, riveting, etc.

[0056] Optionally, the first connecting part 221 is formed with a through hole, the rigidity adjusting assembly 30 is arranged through the through hole of the first connecting part 221 and can rotate relative to the first connecting part 221. The first connecting part 221 can be circular, and the through hole is located at the center of the first connecting part 221, that is, the axis of the through hole is coaxial with the axis of the first connecting part 221.

[0057] When the rigidity adjusting assembly 30 rotates to different positions relative to the vibration absorbing assembly 20, along the length direction of the cantilever part 222, the rigidity adjusting assembly 30 can abut against different positions of the cantilever part 222, so that the rigidity adjusting assembly 30 can support different positions of the cantilever part 222, and the cantilever part 222 has different rigidity. When the vibration is transmitted from the workpiece 40 to the elastic member 22 through the fixing device 10, the cantilever part 222 will vibrate due to its inertia, and the direction of the vibration is the same as the direction of the axis between the rigidity adjusting assembly 30 and the vibration absorbing assembly 20. When the rigidity adjusting assembly 30 abuts against different positions of the cantilever part 222, the cantilever part 222 that is not supported by the rigidity adjusting assembly 30 will vibrate, and the magnitude of the vibration is related to the rigidity of the cantilever part 222. When the cantilever part 222 is supported by the rigidity adjusting assembly 30 farther away from the center of the through hole of the first connecting part 221, the rigidity of the cantilever part 222 is greater, the natural frequency is smaller, and the fixed frequency is greater. Therefore, by adjusting the contact position of the rigidity adjusting assembly 30 and the elastic member 22, that is, by rotating the rigidity adjusting assembly 30, the natural frequency of the vibration absorber can be adjusted, so that the vibration absorber has a wide range of applicable vibration frequencies.

[0058] In some embodiments, please continue to refer to Figures 1-3 The vibration absorbing assembly 20 further comprises a counterweight 23, and the elastic member 22 further comprises a second connecting part 223 connected to the other end of the cantilever part 222, and the second connecting part 223 is connected to the counterweight 23.

[0059] Optionally, the counterweight 23 is ring-shaped, and the axis of the counterweight 23 is coaxial with the axis between the rigidity adjusting assembly 30 and the vibration absorbing assembly 20.

[0060] The second connecting part 223 can be connected to the other end of the cantilever part 222 by screwing, bolting, welding or the like, but is not limited thereto. The second connecting part 223 can also be integrally formed with the other end of the cantilever part 222.

[0061] The second connecting part 223 can be connected to the other end of the cantilever part 222 by screwing, bolting, welding or the like, but is not limited thereto. The second connecting part 223 can also be integrally formed with the other end of the cantilever part 222.

[0062] The length, thickness, material and shape of the weight part 23 are not specifically limited. The provision of the weight part 23 can further increase the stiffness adjustment range of the elastic part 22, thereby widening the effective vibration frequency range of the vibration absorber.

[0063] In some embodiments, referring to Figure 3 , the number of cantilever parts 222 is multiple, and the multiple cantilever parts 222 are arranged in a circumferential direction along an axis of rotation of the stiffness adjustment assembly 30 relative to the vibration absorbing assembly 20.

[0064] For example, the number of cantilever parts 222 is four, and two adjacent cantilever parts 222 are arranged at an interval of 90°.

[0065] The multiple cantilever parts 222 are all connected to the first connecting part 221, which can make the elastic part 22 have sufficient strength and work more reliably in a wider vibration frequency range.

[0066] In some embodiments, referring to Figure 1 , Figure 2 and Figure 4 , the stiffness adjustment assembly 30 comprises a housing 31 and a first stiffness adjustment part 32. The housing 31 is arranged on the vibration absorbing assembly 20. The first stiffness adjustment part 32 is connected to the housing 31 and rotatably connected to the first connecting part 221. A first support arm 321 is formed on the first stiffness adjustment part 32 in a circumferential direction along an axis of rotation of the first stiffness adjustment part 32 relative to the first connecting part 221. When the first stiffness adjustment part 32 is rotated to different positions relative to the first connecting part 221, the first support arm 321 can abut against different positions of the cantilever part 222 in a length direction of the cantilever part 222.

[0067] The number of first support arms 321 can be one or multiple. When the number of first support arms 321 is multiple, the multiple first support arms 321 are arranged at intervals in the circumferential direction along the axis of rotation of the first stiffness adjustment part 32 relative to the first connecting part 221.

[0068] Specifically, the housing 31 forms a containing space with an opening. The vibration absorbing assembly 20 and the first stiffness adjustment part 32 are located in the containing space of the housing 31. The edge of the opening of the housing 31 abuts against the fixing device 10.

[0069] The first rigidity adjusting member 32 can be connected with the shell 31 by screwing, clamping, bolting or welding, but is not limited thereto.

[0070] The first support arm 321 can be straight, arc-shaped or fan-shaped, but is not limited thereto. In an example, the first support arm 321 is arc-shaped, and the bending directions of the first support arms 321 along the circumferential direction of the axis of rotation of the first rigidity adjusting member 32 relative to the first connecting portion 221 are the same. Please refer to Figure 5 and Figure 6 When the first rigidity adjusting member 32 rotates, the contact positions of the first support arms 321 with the cantilever portion 222 are different, i.e. along the length direction of the cantilever portion 222, the contact positions of the first support arms 321 with the cantilever portion 222 are arranged close to or away from the axis of rotation of the first rigidity adjusting member 32 relative to the first connecting portion 221, so that the cantilever portion 222 has different rigidity. Similarly, when the first support arms 321 are of other shapes (such as straight or fan-shaped), the rigidity of the cantilever portion 222 can also be changed.

[0071] Optionally, the number of the first support arms 321 is the same as that of the cantilever portions 222, and each support arm is arranged in abutment with each cantilever portion 222.

[0072] In some embodiments, please refer to Figure 2 The weight member 23 is arranged in spaced relation with the side wall of the shell 31. Thus, the interference between the weight member 23 and the shell 31 can be avoided when the weight member 23 vibrates along the axis of rotation of the first rigidity adjusting member 32 relative to the first connecting portion 221.

[0073] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 4 The rigidity adjusting assembly 30 further comprises a second rigidity adjusting member 33, the second rigidity adjusting member 33 is rotatably connected with the first connecting portion 221, the axis of rotation of the second rigidity adjusting member 33 relative to the first connecting portion 221 is coaxial with the axis of rotation of the first rigidity adjusting member 32 relative to the first connecting portion 221, the second rigidity adjusting member 33 is formed with a second support arm 331 along the circumferential direction of the axis of rotation of the first rigidity adjusting member 32 relative to the first connecting portion 221, the end of the second support arm 331 is connected with the end of the first support arm 321, and the first rigidity adjusting member 32 and the second rigidity adjusting member 33 are located on the two sides of the elastic member 22, when the second rigidity adjusting member 33 rotates to different positions relative to the first connecting portion 221, the second support arm 331 can abut with different positions of the cantilever portion 222 along the length direction of the cantilever portion 222.

[0074] Optionally, the end of the first support arm 321 and the end of the second support arm 331 are connected by screwing or bolting.

[0075] The shape of the second support arm may be, but is not limited to, a straight rod, an arc, or a fan blade.

[0076] The number of second support arms can be one or more. When the number of second support arms 331 is multiple, the multiple second support arms 331 are spaced apart along the circumferential direction of the axis of rotation of the second stiffness adjustment member 33 relative to the first connecting part 221, and the end of each second support arm 331 is connected to the end of each first support arm 321.

[0077] Optionally, the shape of the first stiffness adjusting member 32 is the same as the shape of the second stiffness adjusting member 33 .

[0078] The setting of the second stiffness adjustment member 33 can further support the cantilever part 222, making the supported parts on both sides of the cantilever part 222 more solid. By rotating the first stiffness adjustment member 32, the second stiffness adjustment member 33 rotates simultaneously with the first stiffness adjustment member 32, so that the stiffness variation range of the cantilever part 222 is larger, and the adjustment range of the natural frequency of the vibration absorber is further expanded to meet the needs of different vibration frequencies in different occasions.

[0079] In some embodiments, please refer to Figure 2 、 Figures 7-10 The fixing device 10 includes a suction cup 11, a suction cup cover 12, a pull rod 13 and a suction cup control member 14. Among them, a suction surface 11a is formed on one side surface of the suction cup 11, and the suction cup cover 12 is arranged away from the suction surface 11a, and the suction cup cover 12 is located on the other side of the suction cup 11; one end of the pull rod 13 is connected to the suction cup 11, and the other end of the pull rod 13 is arranged through the suction cup cover 12, and the pull rod 13 is slidably connected to the suction cup cover 12; the suction cup control component 14 is hinged to the other end of the pull rod 13, and the suction cup control component 14 can switch between a first rotation position and a second rotation position relative to the pull rod 13, and a first abutting surface 141a and a second abutting surface 141b are formed on the outer surface of the suction cup control component 14, when the suction cup control component 14 is in the first rotation position, the first abutting surface 141a abuts against the suction cup cover 12, and when the suction cup control component 14 is in the second rotation position, the suction cup control component 14 can be detachably connected to the connecting component 21, and the second abutting surface 141b abuts against the suction cup 11.

[0080] Optionally, the adsorption surface 11a may be a plane or a curved surface with a cavity.

[0081] Optionally, the suction cup 11 may be an elastic member 22 , such as a rubber or silicone suction cup 11 , and the shape of the suction cup 11 is generally trumpet-shaped. By pressing the suction cup 11 , the air in the suction cup 11 is discharged so that the suction cup 11 can be adsorbed on the workpiece 40 .

[0082] Optionally, the pull rod 13, the suction cup 11 and the suction cup cover 12 are coaxially arranged.

[0083] The end of the pull rod 13 connected with the suction cup 11 can be, but is not limited to, threaded connection, glue joint or clamping, etc.

[0084] The opening of the shell 31 is abutted with the suction cup cover 12.

[0085] The plane of the suction cup 11 abutting with the first abutting surface 141a and the second abutting surface 141b is marked as A plane, the distance between the first abutting surface 141a and the A plane is H1, and the distance between the second abutting surface 141b and the A plane is H2, wherein H1 is less than H2. Optionally, the suction cup control member 14 is rotated by 90°, and the switching between the first rotation position and the second rotation position can be realized, that is, the first abutting surface 141a and the second abutting surface 141b are perpendicular. In the use process of the suction cup 11, the suction cup 11 is first flatly abutted with the surface of the workpiece 40, when the suction cup control member 14 is switched from the first rotation position to the second rotation position, due to H1 being less than H2, the pull rod 13 pulls the suction cup 11 to move axially, so that the suction cup 11 is locally deformed, and the center of the part of the suction cup 11 flatly abutted with the workpiece 40 generates a negative pressure cavity, so that the suction cup 11 can be adsorbed on the surface of the workpiece 40.

[0086] In the use of the vibration absorber, the suction cup control member 14 is rotated from the first rotation position to the second rotation position by rotating the suction cup control member 14, the suction cup 11 is adsorbed on the surface of the workpiece 40, and then the connecting member 21 is connected with the suction cup control member 14, when the workpiece 40 vibrates, the first stiffness adjusting member 32 and / or the second stiffness adjusting member 33 can be rotated by rotating the shell 31 until the vibration absorber and the workpiece 40 resonate, and then the rotation of the shell 31 is stopped.

[0087] In some embodiments, please refer to Figures 7-9 , the suction cup control member 14 includes a suction cup control member body 141 and a magnetic suction member 142. Wherein, the suction cup control member body 141 is hinged with the other end of the pull rod 13, and the outer surface of the suction cup control member body 141 is formed with the first abutting surface 141a and the second abutting surface 141b; the magnetic suction member 142 is connected with the suction cup control member body 141, and when the suction cup control member 14 is in the second rotation position, the magnetic suction member 142 can be magnetically connected with the connecting member 21.

[0088] Exemplarily, the connecting piece 21 can be a magnetic conducting piece, which is a component made of a magnetic conducting material, and can be but is not limited to pure iron, low-carbon steel, iron-silicon alloy, iron-aluminum alloy, iron-nickel alloy, etc. The magnetic attraction piece 142 is a magnetic component, which is a component made of a ferromagnetic material, and specifically, the material of the magnetic component can be but is not limited to a permanent magnetic material, such as an alloy, ferrite, or a metal compound, such as an aluminum-nickel-cobalt compound, a FeCr(Co) compound, a compound of rare earth elements and cobalt, or a platinum-cobalt alloy, etc. In an embodiment, both the connecting piece 21 and the magnetic attraction piece 142 are magnetic components, and when the suction cup control piece 14 is switched from the first rotation position to the second rotation position, the magnetic attraction piece 142 and the connecting piece 21 have opposite magnetic poles and attract each other. In other embodiments, the connecting piece 21 can be a magnetic component, and the magnetic attraction piece 142 can be a magnetic conducting piece.

[0089] Optionally, the axis of articulation between the suction cup control piece body 141 and the other end of the pull rod 13 is perpendicular to the axis of the suction cup 11.

[0090] The magnetic attraction between the magnetic attraction piece 142 and the connecting piece 21 facilitates quick disassembly and assembly of the fixing device 10 and the vibration absorption assembly 20, and improves the machining efficiency of the workpiece 40. When the fixing device 10 is fixed on the workpiece 40, the shell 31 is arranged in abutment with the fixing device 10, and the shell 31 can be rotated to drive the first stiffness adjusting piece 32 to rotate relative to the first connecting portion 221, so as to change the stiffness of the elastic piece 22. Since the suction cup 11 generates an axial pulling force on the pull rod 13, a mutual pressure is generated between the shell 31 and the suction cup cover 12, so as to reduce or avoid the rotation of the shell 31 relative to the fixing device 10, thereby enabling the vibration absorber to work at a set fixed frequency during use, and making the vibration absorber work more reliably.

[0091] In some embodiments, the side surface of the connecting piece 21 facing the suction cup control piece 14 is formed with a groove, and when the suction cup control piece 14 is in the second rotation position, part of the suction cup control piece 14 can be inserted into the groove. The groove can be a special-shaped groove, and optionally, the groove can have the same shape as the outer contour of the suction cup control piece 14. The groove can limit the rotation of the suction cup control piece 14, and when the stiffness adjusting assembly 30 is rotated, the rotation of the vibration absorption assembly 20 along with the stiffness adjusting assembly 30 (the suction cup control piece 14 of the fixing device 10 is inserted into the groove of the connecting piece 21 of the vibration absorption assembly 20, and the fixing device 10 is fixed on the workpiece 40) can be further limited, so as to facilitate the adjustment of the stiffness of the elastic piece 22.

[0092] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical scope disclosed by the present application, which can be easily thought by those skilled in the art, should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vibration absorber, characterized by, The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly.

2. The vibration absorber of claim 1, wherein The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly.

3. The vibration absorber of claim 1, wherein The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly.

4. The vibration absorber according to any one of claims 1 to 3, characterized in that The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for absorbing the vibration of the workpiece, a rigidity adjusting assembly rotatably connected with the vibration absorbing assembly, the rigidity adjusting assembly being capable of rotating to different positions relative to the vibration absorbing assembly to adjust the rigidity of the vibration absorbing assembly. The utility model relates to a fixing device for fixing on a workpiece, a vibration absorbing assembly connected with the fixing device, the vibration absorbing assembly being used for A pull rod, one end of the pull rod is connected with the suction disc, the pull rod is located at the other side of the suction disc, the other end of the pull rod is arranged through the suction disc cover, and the pull rod is slidably connected with the suction disc cover; A suction disc control member is hinged to the other end of the pull rod, the suction disc control member can be switched between a first rotating position and a second rotating position relative to the pull rod, an outer surface of the suction disc control member is formed with a first abutting surface and a second abutting surface, when the suction disc control member is in the first rotating position, the first abutting surface abuts against the suction disc cover, when the suction disc control member is in the second rotating position, the suction disc control member can be detachably connected with the connecting member, and the second abutting surface abuts against the suction disc.

5. The vibration absorber of claim 4, wherein The suction disc control member comprises: A suction disc control member body is hinged to the other end of the pull rod, an outer surface of the suction disc control member body is formed with the first abutting surface and the second abutting surface; A magnetic suction member is connected with the suction disc control member body, when the suction disc control member is in the second rotating position, the magnetic suction member can be magnetically connected with the connecting member.

6. The vibration absorber of claim 5, wherein The connecting member is a magnetic conductive member, and the magnetic suction member is a magnetic component; Or the connecting member and the magnetic suction member are both magnetic components; Or the connecting member is a magnetic component, and the magnetic suction member is a magnetic conductive member.

Images