Floating supporting device and clamp tool

Abstract

The utility model relates to the technical field of machining, and provides a floating supporting device and a clamp tool, and the floating supporting device comprises a shell assembly and a first floating supporting assembly. The shell assembly comprises a shell part and a cover body, the cover body is detachably connected with the shell part, a containing cavity is defined by the cover body and the shell part, the shell part is provided with an air supply channel, the air supply channel is communicated with the containing cavity, and the cover body is provided with a through hole. The first floating supporting assembly comprises a piston component and a supporting component, and the supporting component is located in the containing cavity and suitable for moving in the through hole; the piston component is arranged in the air supply channel and is in linkage with the supporting component. Under the condition that gas is introduced into the gas supply channel, the piston component pushes the supporting component to extend out for supporting; and under the condition that the air path is disconnected, the piston component and the supporting component retract. The floating supporting device is simple in structure, convenient to operate and good in supporting stability.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a floating support device and a clamp tooling. Background Art

[0002] When machining various parts, the machine tool needs to be equipped with a work fixture that matches the machined parts to fix the parts on the workbench to ensure the machining accuracy and efficiency of the parts. Especially for some large plate and shell parts, in order to reduce the deformation of the parts during clamping and improve the stability of the parts processing, floating support devices are often used for local support.

[0003] For example, the traditional floating support device uses a cylinder for support. Since the output force of the cylinder is difficult to control accurately, a rigid support is formed in some cases. If the part is a plastic-sprayed part or a casting, and the contact surface is uneven, it is difficult to ensure that the supported position of the part is consistent with the contact force of the rigid support. This will generate local stress and cause the part to deform due to clamping. Utility Model Content

[0004] A first aspect of the utility model provides a floating support device to solve the above-mentioned defects in the prior art. The floating support device has a simple structure, is easy to install, and has good supporting stability.

[0005] A second aspect of the utility model provides a clamp tool.

[0006] A first aspect of the utility model provides a floating support device, comprising a shell assembly and a first floating support assembly.

[0007] The shell assembly includes a shell component and a cover body, the cover body is detachably connected to the shell component, the cover body and the shell component enclose a receiving cavity, the shell component is provided with an air supply channel, the air supply channel is communicated with the receiving cavity, and the cover body is provided with a through hole.

[0008] The first floating support assembly includes a piston component and a support component, wherein the support component is located in the accommodating cavity and is suitable for moving in the through hole; the piston component is arranged in the air supply channel and is linked with the support component; when gas is introduced into the air supply channel, the piston component pushes the support component to extend for support; when the air path is disconnected, the piston component and the support component retract.

[0009] According to the floating support device provided by the utility model, the piston component includes:

[0010] The piston body comprises a rod body and a plug body, wherein the plug body is arranged at one end of the rod body, and the other end of the rod body away from the plug body is connected to the supporting component;

[0011] A first elastic member is sleeved on the rod body. One end of the first elastic member abuts against the plug body, and the other end of the first elastic member abuts against the top wall of the air supply passage.

[0012] According to the floating support device provided by the present invention, the support component includes:

[0013] A support member internally configured with a floating passage extending along the axial direction of the support member. The outer wall of the support member includes a first support section and a second support section. The diameter of the first support section is greater than that of the second support section, and a limiting step is formed between the first support section and the second support section. The second support section is adapted to move in the through hole;

[0014] A second elastic member is located in the floating passage. One end of the second elastic member abuts against the top wall of the floating passage, and the other end of the second elastic member abuts against the piston component.

[0015] According to the floating support device provided by the present invention, it further includes a standard part threadedly connected to the second support section of the support member, and one end of the second elastic member abuts against the standard part.

[0016] According to the floating support device provided by the present invention, a guiding groove is provided on any one of the housing component and the support member, and a guiding portion is provided on the other one of the housing component and the support member. The guiding portion is in sliding fit with the guiding groove.

[0017] According to the floating support device provided by the present invention, it further includes a second floating support assembly hermetically arranged in the accommodating cavity to divide the accommodating cavity into an air inlet cavity and an air exhaust cavity. The contact surface between the second floating support assembly and the support component is a conical surface;

[0018] The housing component is provided with a bypass air inlet passage and an air exhaust passage. The bypass air inlet passage is respectively communicated with the air inlet cavity and the air supply passage, and the air exhaust passage is communicated with the air exhaust cavity;

[0019] When the piston component pushes the support component to extend for support, gas enters the air inlet cavity from the bypass air inlet passage to push the second floating support assembly to be clamped on the outer circumferential surface of the support component.

[0020] According to the floating support device provided by the present invention, the second floating support assembly includes a clamping member and a third elastic member;

[0021] The contact surface between the clamping member and the supporting component is a conical surface. The third elastic member is located in the exhaust cavity. One end of the third elastic member abuts against the cover body, and the other end of the third elastic member abuts against the clamping member.

[0022] According to the floating support device provided by the utility model, the second floating support assembly further comprises a conical elastic clamping piece, the elastic clamping piece is sleeved on the outer circumferential surface of the supporting component, and the clamping piece is sleeved on the outside of the elastic clamping piece.

[0023] According to the floating support device provided by the utility model, the shell component includes a support seat and a sleeve, and the sleeve and the support seat are detachably connected;

[0024] The accommodating cavity is formed by the support seat, the sleeve and the cover body, and the air supply channel is opened through the support seat.

[0025] A second aspect of the utility model provides a fixture, comprising a base plate and any one of the floating support devices described above, wherein the floating support device is detachably connected to the base plate and is used to support parts.

[0026] The floating support device provided by the utility model has a cover body and a shell component enclosing a receiving chamber, an air supply channel is provided on the shell component, the air supply channel is connected to the receiving chamber, and a through hole is provided on the cover body. The supporting component is located in the receiving chamber so as to move in the through hole; the piston component is provided in the air supply channel and is linked with the supporting component. When gas is introduced into the air supply channel, the piston component pushes the supporting component to extend for support, and the supporting component realizes local support after contacting the part, which can alleviate the clamping deformation of the part to a certain extent. When the air circuit is disconnected, the piston component and the supporting component retract. The floating support device has a simple structure, is easy to install, has good support stability, and is not easy to deform the parts.

[0027] The fixture provided by the utility model has all the above advantages because it includes the above floating support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of a floating support device provided in an embodiment of the utility model.

[0030] Figure 2 This is a bottom view of the floating support device provided by an embodiment of the present utility model.

[0031] Figure 3 It is Figure 2 a cross-sectional view along line A-A in (when the floating support device is in an unsupported state).

[0032] Figure 4 It is Figure 2 a cross-sectional view along line A-A in (when the floating support device is in a supported state).

[0033] Figure 5 This is one of the schematic diagrams of the usage state of the floating support device provided by an embodiment of the present utility model (when the floating support device is in an unsupported state).

[0034] Figure 6 This is another schematic diagram of the usage state of the floating support device provided by an embodiment of the present utility model (when the floating support device is in a supported state).

[0035] Reference numerals:

[0036] 10. Housing assembly; 11. Support base; 111. Air supply channel; 112. Guide groove; 113. Bypass air intake channel; 12. Sleeve; 121. Exhaust channel; 13. Cover body; 131. Through hole; 14. Accommodation cavity; 141. Intake cavity; 142. Exhaust cavity;

[0037] 20. First floating support assembly; 21. Piston component; 211. Piston main body; 2111. Rod body; 2112. Plug body; 212. First elastic member; 213. Limiting member; 22. Support component; 221. Support member; 2211. Floating channel; 2212. Limiting step; 2213. Guide portion; 222. Second elastic member; 223. Standard part;

[0038] 30. Second floating support assembly; 31. Clamping member; 32. Third elastic member; 33. Elastic clamping member;

[0039] 100. Floating support device; 200. Bottom plate; 300. Part. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0041] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0042] In the embodiments of the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0044] Figure 1 is a schematic structural diagram of a floating support device provided by an embodiment of the present utility model. Figure 2 is a bottom view of the floating support device provided by an embodiment of the present utility model. Figure 3 is Figure 2 a cross-sectional view along line A-A in (the floating support device is in an un-supported state). Figure 4 is Figure 2 a cross-sectional view along line A-A in (the floating support device is in a supported state).

[0045] Referring to Figures 1 to 4 , an embodiment of the present utility model provides a floating support device 100, and the floating support device 100 includes a housing assembly 10 and a first floating support assembly 20.

[0046] The housing assembly 10 includes a housing component and a cover 13. The cover 13 is detachably connected to the housing component. That is, the cover 13 and the housing component can be detachably connected by fasteners such as screws and bolts, or they can also be connected by a threaded connection. The cover 13 and the housing component enclose a receiving cavity 14. An air supply passage 111 is formed in the housing component, and the air supply passage 111 communicates with the receiving cavity 14. A through hole 131 is formed in the cover 13.

[0047] Among them, the housing component can be an integrally arranged overall structure, or it can be arranged in a split form. For example, in some embodiments of the present invention, the housing component includes a support base 11 and a sleeve 12. The sleeve 12 and the support base 11 are detachably connected, that is, the sleeve 12 and the support base 11 can be detachably connected by fasteners such as screws and bolts. The receiving cavity 14 is formed by enclosing the support base 11, the sleeve 12 and the cover 13. An air supply passage 111 is formed through the center of the support base 11. The air supply passage 111 is a hollow stepped hole provided in the center of the support base 11 for the piston component 21 to pass through.

[0048] The first floating support assembly 20 includes a piston component 21 and a support component 22. The support component 22 is located in the receiving cavity 14 and is adapted to move in the through hole 131. The piston component 21 is arranged in the air supply passage 111 and is linked with the support component 22. When gas is introduced into the air supply passage 111, the piston component 21 pushes the support component 22 to extend for support. When the air path is disconnected, the piston component 21 and the support component 22 retract.

[0049] That is: when external compressed gas enters the air supply passage 111 of the support base 11, it pushes the piston component 21 to move upward. The piston component 21 synchronously drives the support component 22 to move upward. When the top of the support component 22 contacts the workpiece 300 to be processed, it stops moving upward and closely adheres to the contact surface of the workpiece 300. The piston component 21 then continues to move upward until the bottom of the piston component 21 contacts the top wall of the air supply passage 111, as Figure 4 shown.

[0050] When the air path of the external air supply passage 111 is disconnected, the piston component 21 automatically resets to return to the initial position. At the same time, the support component 22 automatically resets to return to the initial position, releasing the local support effect on the workpiece 300, as Figure 3 shown.

[0051] It can be understood that in the floating support device 100 provided by the embodiment of the utility model, the cover body 13 and the shell part enclose a receiving chamber 14, the shell part is provided with an air supply channel 111, the air supply channel 111 is connected with the receiving chamber 14, and the cover body 13 is provided with a through hole 131. The support component 22 is located in the receiving chamber 14 to move in the through hole 131; the piston component 21 is provided in the air supply channel 111, and is arranged in linkage with the support component 22. When gas is introduced into the air supply channel 111, the piston component 21 pushes the support component 22 to extend for support, and the support component 22 realizes partial support after contacting the part 300, which can alleviate the clamping deformation of the part 300 to a certain extent. When the gas circuit is disconnected, the piston component 21 and the support component 22 retract, and the floating support device 100 has a simple structure, is easy to install, and has good support stability.

[0052] In addition, in the related art, a floating support device with a spring is used to partially support the processed parts. In the specific support process, the support column needs to be pressed down to overcome the elastic force of the spring, and then the floating support device is locked. In this way, if the number of floating support devices is set to be large, it is difficult for the parts to offset the elastic force of the floating support device by their own gravity, which will cause a certain positioning error in the vertical direction of the parts, thereby causing the parts to be clamped and deformed. When the floating support device 100 provided in the embodiment of the utility model is performing local support, the support component 22 moves from bottom to top to contact the part 300, and does not rely on the gravity of the part 300 itself to offset the elastic force of the floating support device 100, which can avoid a certain positioning error in the vertical direction of the part 300, and achieve good support to improve the processing quality.

[0053] Continue reading Figure 3 and Figure 4 In some embodiments of the present invention, the piston component 21 includes a piston body 211 and a first elastic member 212. The first elastic member 212 can be a spring or other structure.

[0054] The piston body 211 includes a rod body 2111 and a plug body 2112. The diameter of the plug body 2112 is larger than the diameter of the rod body 2111. The plug body 2112 is fixed to one end of the rod body 2111. The other end of the rod body 2111 away from the plug body 2112 is connected to the support component 22; that is, the other end of the rod body 2111 away from the plug body 2112 extends into the floating channel 2211 of the following support component 221. A limiting member 213 such as a nut is provided on the rod body 2111 to limit the rod body 2111 in the floating channel 2211, thereby realizing the linkage between the rod body 2111 and the support component 22.

[0055] During the installation process, the air supply passage 111 at the center of the support base 11 is provided with the piston body 211. The rod body 2111 of the piston body 211 passes through the support base 11 and the following support member 221, and the upper end of the rod body 2111 of the piston body 211 is locked by a nut. The plug body 2112 of the piston body 211 is arranged at the bottom of the rod body 2111, and the plug body 2112 can be lifted by compressed air.

[0056] The first elastic member 212 is sleeved on the rod body 2111. One end of the first elastic member 212 abuts against the plug body 2112, and the other end of the first elastic member 212 abuts against the top wall of the air supply passage 111. That is, the upper end of the first elastic member 212 contacts the stepped surface of the air supply passage 111 inside the support base 11, and the lower end of the first elastic member 212 contacts the upper end surface of the plug body 2112 of the piston component 21.

[0057] In addition, the piston component 21 can also be set as a structure such as a cylinder. Equivalently, the piston rod of the cylinder extends into the floating passage 2211 of the support member 221 to achieve linkage with the support member 221. Equivalently, a cylinder is adopted below the first floating support assembly 20, and a support member 22 is adopted above the first floating support assembly 20. However, setting a cylinder requires adding an air circuit for the rodless cavity, and the structural setting is relatively complex.

[0058] Continue to refer to Figure 3 and Figure 4 , in some embodiments of the present invention, the support member 22 includes a support member 221 and a second elastic member 222.

[0059] The inside of the support member 221 is provided with a floating passage 2211, and the floating passage 2211 extends along the axial direction of the support member 221. The outer wall of the support member 221 includes a first support section and a second support section (not labeled in the figure). The diameter of the first support section is larger than that of the second support section, and a limiting step 2212 is formed between the first support section and the second support section. The second support section is adapted to move in the through hole 131. Equivalently, the outer wall of the support member 221 is in the shape of a stepped shaft, and the limiting step 2212 formed between the first support section and the second support section can cooperate with the cover body 13 to play a limiting role.

[0060] The second elastic member 222 is located in the floating passage 2211. One end of the second elastic member 222 abuts against the top wall of the floating passage 2211, and the other end of the second elastic member 222 abuts against the nut arranged on the rod body 2111.

[0061] When the external compressed gas enters the air supply channel 111 of the support base 11, it pushes the plug body 2112 of the piston main body 211 to move upward, so as to compress the first elastic member 212, and make the piston main body 211 move upward as a whole. At this time, the nut arranged on the rod body 2111 of the piston main body 211 compresses the second elastic member 222, and the support member 221 moves upward under the elastic force of the second elastic member 222. Until the top of the support member 221 contacts the part 300 to be processed, it stops moving upward and closely adheres to the contact surface of the part 300, and the piston main body 211 continues to move upward until the upper end surface of the plug body 2112 contacts the top wall of the air supply channel 111, as Figure 4 shown.

[0062] When the air path of the external air supply channel 111 is disconnected, both the first elastic member 212 and the second elastic member 222 recover their elastic deformations, so as to drive the piston main body 211 and the support member 221 to achieve automatic reset, and return to their respective initial positions, so that the support member 221 releases the local support effect on the part 300, as Figure 3 shown.

[0063] Continue to refer to Figure 3 and Figure 4 , in some embodiments of the present invention, the floating support device 100 further includes a standard part 223, and the standard part 223 is threadedly connected to the second support section of the support member 221, and one end of the second elastic member 222 abuts against the standard part 223.

[0064] The standard part 223 can be a structure such as a screw or a bolt. The screw or the bolt can be set to different heights according to specific usage conditions, so that the screw or the bolt is threadedly connected to the top of the support member 221, which is convenient for replacement, and thus can adaptively adjust the support height of the floating support device 100.

[0065] In addition, a sealing ring can be arranged on the installation surface for fixing the screw or the bolt to effectively prevent impurities such as cutting fluid from entering the inside of the floating support device 100.

[0066] In addition, the structures of the support member 221 and the standard part 223 can be set as an integral structure, which is equivalent to that the height of the floating support device 100 cannot be adjusted and has a unified support height.

[0067] Continue to refer to Figure 3 and Figure 4 , in some embodiments of the present invention, a guide groove 112 is provided on any one of the housing component and the support member 221, and a guide portion 2213 is provided on the other of the housing component and the support member 221, and the guide portion 2213 is in sliding fit with the guide groove 112.

[0068] That is, in order to guide the movement of the support member 221, a guide groove 112 can be provided on the support base 11 of the housing component, and a guide portion 2213 is formed to extend below the support member 221. When the upper part of the support member 221 moves up and down in the through hole 131, the guide portion 2213 at the lower part of the support member 221 can move in the guide groove 112, thereby improving the stability of the support member 221.

[0069] Of course, the guide portion 2213 can also be provided on the support base 11 of the housing component, and the guide groove 112 can be formed below the support member 221. The specific setting can be determined according to the actual usage.

[0070] Continue to refer to Figure 3 and Figure 4 In some embodiments of the present invention, different from the above embodiments, the floating support device 100 further includes a second floating support assembly 30. The second floating support assembly 30 is hermetically disposed in the accommodation cavity 14 to divide the accommodation cavity 14 into an air inlet cavity 141 and an exhaust cavity 142. The contact surface between the second floating support assembly 30 and the support member 22 is a conical surface.

[0071] The housing component is provided with a bypass air inlet passage 113 and an exhaust passage 121. The bypass air inlet passage 113 is respectively communicated with the air inlet cavity 141 and the air supply passage 111. The bypass air inlet passage 113 is communicated with the air inlet cavity 141, and the exhaust passage 121 is communicated with the exhaust cavity 142. During the process of the clamping member 31 moving upward, the gas in the exhaust cavity 142 can be exhausted from the exhaust passage 121, realizing the up and down movement of the clamping member 31. The size of the exhaust passage 121 is small, aiming to enable the clamping member 31 to move up and down without being affected by the air pressure reaction.

[0072] When the piston member 21 pushes the support member 22 to extend for support, the gas enters the air inlet cavity 141 from the bypass air inlet passage 113 to push the second floating support assembly 30 to be clamped on the outer circumferential surface of the support member 22, positioning the support member 22, ensuring that the support position of the floating support device 100 will not change randomly, and the support stability is higher.

[0073] Specifically, the second floating support assembly 30 includes a clamping member 31 and a third elastic member 32; the contact surface between the clamping member 31 and the support member 22 is a conical surface. The third elastic member 32 is located in the exhaust cavity 142. One end of the third elastic member 32 abuts against the cover body 13, and the other end of the third elastic member 32 abuts against the clamping member 31.

[0074] When the external compressed gas enters the air supply channel 111 of the support base 11, it pushes the plug body 2112 of the piston main body 211 to move upward, so as to compress the first elastic member 212 and make the piston main body 211 move upward as a whole. At this time, the nut arranged on the rod body 2111 of the piston main body 211 compresses the second elastic member 222, and the support member 221 moves upward under the elastic force of the second elastic member 222. Until the top of the support member 221 contacts the workpiece 300 to be processed, it stops moving upward and closely adheres to the contact surface of the workpiece 300, and the piston main body 211 continues to move upward until the upper end surface of the plug body 2112 contacts the top wall of the air supply channel 111. At this time, the compressed gas enters the intake cavity 141 through the bypass intake channel 113, provides gas pressure for the clamping member 31, and pushes the clamping member 31 to move upward. The conical surface of the clamping member 31 can abut against the outer circumferential surface of the support member 221, and provides support through the frictional force between the clamping member 31 and the support member 221, so as to make the support member 221 maintain a certain supporting effect and improve the stability of the support.

[0075] Continue to refer to Figure 3 and Figure 4 In some embodiments of the present invention, the second floating support assembly 30 further includes a conical elastic clamping member 33. The elastic clamping member 33 is sleeved on the outer circumferential surface of the support member 22, and the clamping member 31 is sleeved on the outside of the elastic clamping member 33.

[0076] That is to say, an elastic clamping member 33 is arranged between the support member 221 and the clamping member 31. The clamping member 31 provides a clamping effect for the elastic clamping member 33, so that the elastic clamping member 33 tightly holds the support. Stable support is provided through the frictional force between the elastic clamping member 33 and the support member 221, so that the overall support height of the support member 221 can be continuously maintained, and the stability can be further improved; and the movement position of the support member 221 can be locked by clamping and loosening the elastic clamping member 33.

[0077] Since when the elastic clamping member 33 clamps, due to the action of the frictional force, the elastic clamping member 33 clamps the support member 221, making the support member 221 unable to move up and down, thus realizing position locking.

[0078] Compared with the clamping member 31 directly contacting the support member 221, by directly contacting the support member 221 through the elastic clamping member 33, the contact area can be increased, so as to increase the frictional contact surface between the elastic clamping member 33 and the support member 221, and improve the stability of the support member 221.

[0079] When the external compressed gas enters the air supply channel 111 of the support base 11, it pushes the plug body 2112 of the piston body 211 to move upward, so as to compress the first elastic member 212 and make the whole piston body 211 move upward. At this time, the nut arranged on the rod body 2111 of the piston body 211 compresses the second elastic member 222, and the support member 221 moves upward under the elastic force of the second elastic member 222. Until the top of the support member 221 contacts the workpiece 300, the upward movement stops and it closely adheres to the contact surface of the workpiece 300. Then the piston body 211 continues to move upward until the upper end surface of the plug body 2112 contacts the top wall of the air supply channel 111. At this time, the compressed gas enters the intake cavity 141 through the bypass intake channel 113, providing gas pressure to the clamping member 31 and pushing the clamping member 31 to move upward. The conical surface of the clamping member 31 can make the elastic clamping member 33 contract to clamp the support member 221, and the friction force between the elastic clamping member 33 and the support member 221 provides support to keep the support member 221 in a certain supporting role, with better stability.

[0080] In addition, the clamping member 31 can also be set as a series cylinder to increase the clamping force of the clamping member 31. Uniformly distributed balls can be arranged between the clamping member 31 and the elastic clamping member 33 to reduce the friction force between the two, facilitating the sliding of the clamping member 31 along the outer wall of the elastic clamping member 33 to quickly clamp the elastic clamping member 33, so that the elastic clamping member 33 tightly holds the outer circumferential surface of the support member 221 and locks the supporting position of the support member 221.

[0081] The taper of the outer conical surface of the elastic clamping member 33 is the same as that of the inner conical surface of the clamping member 31, which is convenient for the clamping member 31 to clamp the elastic clamping member 33. Among them, the elastic clamping member 33 is set as an elastic collet that can be contracted and opened with staggered upper and lower openings.

[0082] It should be noted that in order to improve the sealing performance of the floating support device 100, sealing elements (sealing rings) etc. are arranged at all joints. For example, a sealing element is arranged between the support member 221 and the cover body 13; a sealing element is arranged between the plug body 2112 of the piston body 211 and the inner wall of the air supply channel 111; a sealing element is arranged between the clamping member 31 and the sleeve 12; a sealing element (not labeled in the figure) is arranged between the support base 11 and the sleeve 12.

[0083] When the floating support device 100 provided by the embodiment of the present utility model is in an unsupported state, the support member 221 retracts to the initial position. When external compressed gas enters the air supply channel 111 of the support base 11, it pushes the plug body 2112 of the piston body 211 upward to compress the first elastic member 212, causing the entire piston body 211 to move upward. At this time, the nut provided on the rod body 2111 of the piston body 211 compresses the second elastic member 222, and the support member 221 moves upward under the elastic force of the second elastic member 222. The top of the support member 221 contacts the workpiece 300 to perform local support. At the same time, when the support member 221 completes the preliminary support, the compressed gas enters the air intake cavity 141 through the bypass air intake channel 113, providing gas pressure to the clamping member 31, pushing the clamping member 31 upward. The conical surface of the clamping member 31 can cause the elastic clamping member 33 to contract to clamp the support member 221, and the friction force between the elastic clamping member 33 and the support member 221 provides support to ensure the stability and machining accuracy of the workpiece 300. The floating support device 100 has a simple structure, is convenient to install, and has better support stability.

[0084] Figure 5 is one of the schematic diagrams of the usage state of the floating support device 100 provided by the embodiment of the present utility model (the floating support device 100 is in an unsupported state). Figure 6 is the second schematic diagram of the usage state of the floating support device 100 provided by the embodiment of the present utility model (the floating support device 100 is in a supported state).

[0085] Refer to Figure 5 and Figure 6 The embodiment of the present utility model further provides a fixture tooling, which includes a bottom plate 200 and the above-mentioned floating support device 100. The floating support device 100 is detachably connected to the bottom plate 200 and is used to support the workpiece 300. That is, the outside of the entire floating support device 100 can be provided with threads, and then the floating support device 100 is directly screwed onto the adapter seat of the bottom plate 200 to save installation space.

[0086] Among them, threads are provided on the outside of the entire floating support device 100 starting from the bottom, and the thread depth is about 40 mm. The floating support device 100 can be directly connected to the bottom plate 200 of the fixture tooling through the threads, and air holes are provided inside the bottom plate 200 to provide a clean high-pressure air source for the floating support device 100.

[0087] To ensure the airtightness requirement, a sealing ring is provided at the bottom of the support base 11 of the floating support device 100, so that the support base 11 and the adapter seat of the bottom plate 200 achieve a sealed fit.

[0088] The floating support device 100 is arranged at the suspended position of the part 300. When the floating support device 100 is in the initial position, that is, when the floating support device 100 is in an unsupported state, the support member 221 of the floating support device 100 retracts, and there is a certain gap between the support member 221 and the part 300, that is, the support member 221 is not in contact with the part 300.

[0089] That is, before the part 300 is processed, it is fixed by the clamping cylinder on the fixture tooling, and the air source of the floating support device 100 is not connected. At this time, the floating support device 100 is in an unsupported state. The piston body 211 inside the floating support device 100 is at the lowest position under the action of the first elastic member 212. At the same time, the second elastic member 222 is in an extended state, and the second elastic member 222 has no elastic support effect on the support member 221, and the support member 221 is also at the lowest position, that is, the retracted state. At the same time, since the bottom of the clamping member 31 is not provided with compressed air pressure and is only affected by the elastic force of the third elastic member 32, the clamping member 31 is also at the lowest position. At this time, the elastic clamping member 33 is in a released state, as Figure 2 and Figure 5 shown.

[0090] When the part 300 is fixed by the fixture tooling and is ready to start processing, the air source of the floating support device 100 is connected. The piston body 211 inside the floating support device 100 moves upward under the action of air pressure and compresses the first elastic member 212. While the piston body 211 moves upward, it presses against the second elastic member 222, and the second elastic member 222 is compressed synchronously. At this time, the support member 221 moves upward under the elastic force of the second elastic member 222. When the standard part 223 at the top of the support member 221 contacts the surface of the part 300, the support member 221 stops moving upward. At this time, the piston body 211 continues to move upward under the action of air pressure until the piston upper end face of the piston body 211 contacts the step end face of the support seat 11 (that is, the top wall of the air supply channel 111) and then stops moving. At the moment of contact, the bypass air intake channel 113 in the middle position of the support seat 11 intakes air, that is, the high-pressure air source enters the closed air intake cavity 141 formed by the support seat 11 and the clamping member 31 from the air supply channel 111 through the bypass air intake channel 113. At this time, the bottom of the clamping member 31 moves upward under the action of air pressure. While moving, the inner conical surface contacts the outer conical surface of the elastic clamping member 33, and the elastic clamping member 33 contracts and clamps the support member 221. The support member 221 cannot move up and down under the clamping force of the elastic clamping member 33. At this time, the supporting force of the floating support device 100 is provided by the frictional force between the elastic clamping member 33 and the support member 221, as Figure 4 and Figure 6 shown.

[0091] Correspondingly, after the support member 221 contacts the part 300, position locking is achieved through the elastic clamping member 33. Although the floating support contacts the part 300, when the support member 221 supports the part 300, there is no other external force output, and the positioning is accurate, which can avoid the situation of clamping deformation of the part 300.

[0092] When the machining of the part 300 is completed, first disconnect the air source of the floating support device 100. The upper part of the clamping member 31 is subjected to the elastic force of the third elastic member 32, and the clamping member 31 moves downward. The inner conical surface of the clamping member 31 and the outer conical surface of the elastic clamping member 33 are separated, and the elastic clamping member 33 completes the rebound and loosening. The upper end of the plug body 2112 of the piston body 211 inside the floating support device 100 moves downward under the action of the first elastic member 212 and stops moving when it reaches the lowest position. While the piston body 211 moves downward, the second elastic member 222 returns to the extended state, that is, the elastic force of the second elastic member 222 acting on the support member 221 is eliminated. The support member 221 is subjected to its own gravity and the downward pulling force of the nut on the upper part of the piston body 211, and the support member 221 moves downward to the lowest position (i.e., the initial position), as Figure 2 and Figure 5 shown.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating support device, characterized in that, include: A shell assembly (10) comprises a shell component and a cover body (13), the cover body (13) being detachably connected to the shell component, the cover body (13) and the shell component enclosing a receiving cavity (14), an air supply channel (111) being provided on the shell component, the air supply channel (111) being in communication with the receiving cavity (14), and a through hole (131) being provided on the cover body (13); The first floating support assembly (20) comprises a piston component (21) and a support component (22); the support component (22) is located in the accommodating chamber (14) and is suitable for moving in the through hole (131); the piston component (21) is arranged in the air supply channel (111) and is arranged in linkage with the support component (22); when gas is introduced into the air supply channel (111), the piston component (21) pushes the support component (22) to extend for support; when the air path is disconnected, the piston component (21) and the support component (22) retract.

2. The floating support device according to claim 1, wherein The piston component (21) comprises: The piston body (211) comprises a rod body (2111) and a plug body (2112), wherein the plug body (2112) is arranged at one end of the rod body (2111), and the other end of the rod body (2111) facing away from the plug body (2112) is connected to the support component (22); The first elastic member (212) is sleeved on the rod body (2111), one end of the first elastic member (212) abuts against the plug body (2112), and the other end of the first elastic member (212) abuts against the top wall of the air supply channel (111).

3. The floating support device according to claim 2, wherein The supporting component (22) comprises: A support member (221) having a floating channel (2211) therein, the floating channel (2211) extending along the axial direction of the support member (221), an outer wall of the support member (221) comprising a first support segment and a second support segment, the diameter of the first support segment being greater than the diameter of the second support segment, a limiting step (2212) being formed between the first support segment and the second support segment, and the second support segment being suitable for moving in the through hole (131); The second elastic member (222) is located in the floating channel (2211), one end of the second elastic member (222) abuts against the top wall of the floating channel (2211), and the other end of the second elastic member (222) abuts against the piston component (21).

4. The floating support device according to claim 3, characterized in that, It also includes a standard part (223), wherein the standard part (223) is threadedly connected to the second supporting section of the supporting part (221), and one end of the second elastic part (222) is in abutment with the standard part (223).

5. The floating support device according to claim 3, characterized in that, Any one of the shell component and the support member (221) is provided with a guide groove (112), and the other of the shell component and the support member (221) is provided with a guide portion (2213), and the guide portion (2213) is slidably matched with the guide groove (112).

6. The floating support device according to any one of claims 1 to 5, characterized in that Further included is a second floating support assembly (30). The second floating support assembly (30) is sealingly disposed in the accommodation cavity (14) to divide the accommodation cavity (14) into an intake cavity (141) and an exhaust cavity (142). The contact surface of the second floating support assembly (30) and the support member (22) is a conical surface; The housing member is provided with a bypass intake passage (113) and an exhaust passage (121). The bypass intake passage (113) is respectively communicated with the intake cavity (141) and the air supply passage (111), and the exhaust passage (121) is communicated with the exhaust cavity (142); When the piston member (21) pushes the support member (22) to extend for support, gas enters the intake cavity (141) from the bypass intake passage (113) to push the second floating support assembly (30) to be clamped on the outer circumferential surface of the support member (22).

7. The floating support device according to claim 6, characterized in that The second floating support assembly (30) includes a clamping member (31) and a third elastic member (32); The contact surface of the clamping member (31) and the support member (22) is a conical surface. The third elastic member (32) is located in the exhaust cavity (142). One end of the third elastic member (32) abuts against the cover body (13), and the other end of the third elastic member (32) abuts against the clamping member (31).

8. The floating support device according to claim 7, wherein, The second floating support assembly (30) further includes a conical elastic clamping member (33). The elastic clamping member (33) is sleeved on the outer circumferential surface of the support member (22), and the clamping member (31) is sleeved on the outside of the elastic clamping member (33).

9. The floating support device according to any one of claims 1 to 5, characterized in that, The housing member includes a support seat (11) and a sleeve (12). The sleeve (12) and the support seat (11) are detachably connected; The accommodation cavity (14) is formed by surrounding the support seat (11), the sleeve (12) and the cover body (13). The air supply passage (111) is penetratingly opened on the support seat (11).

10. A fixture tooling, characterized in that, It includes a bottom plate (200) and the floating support device (100) according to any one of claims 1 to 9. The floating support device (100) is detachably connected to the bottom plate (200) for supporting a part (300).

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