Flexible floating connection device and polishing machine

Abstract

The utility model relates to the technical field of polishing machine, concretely relates to a flexible floating connecting device and polishing machine. The flexible floating connecting device and polishing machine, including shell, Z axle floating seat, floating disc, end connecting disc and a plurality of elastic fixing pieces, the shell inside has the space, the shell inside is equipped with fixed disc, the fixed disc will the shell inside space is divided into first installation cavity and second installation cavity, one end of the shell is provided with the first opening that is linked with first installation cavity, and the second opening that is linked with second installation cavity is provided with the other end. The polishing machine installed with the flexible connecting device can have the compensation in the Z axle direction, and has the ability that can be flexibly floated in the X / Y axle direction, thereby making the polishing disc can be along the workpiece curved surface normal adaptive deflection, has the multi -freedom degree polishing processing capacity, improves the polishing precision to workpiece curved surface.

Description

Technical Field

[0001] This utility model relates to the field of polishing machine technology, specifically to a flexible floating connection device and a polishing machine. Background Technology

[0002] The flexible connection device of a polishing machine is a key component connecting the rigid robotic arm and the polishing disc. Its core function is to provide the necessary "compliance" and "degrees of freedom" to ensure stable polishing quality and protect the equipment. Generally, traditional flexible connection devices utilize springs or airbags to achieve flexible contact with the workpiece being polished. For example, the flexible connection device used in a robotic airbag polishing device is described in patent announcement number CN206357040U.

[0003] Traditional polishing machines use flexible connection devices such as springs or airbags to achieve flexible contact with the workpiece being polished. This is only suitable for flat surface polishing and has poor adaptability to free-form surfaces. Furthermore, the polishing equipment has a relatively limited degree of freedom in polishing, making it difficult to achieve multi-degree-of-freedom polishing. Utility Model Content

[0004] (I) The problem to be solved by this utility model is that the flexible connection device of the traditional polishing machine uses springs or air bladders to obtain flexible contact with the workpiece being polished, which is only suitable for flat surface polishing and has poor adaptability to free curved surfaces. Moreover, the polishing equipment has a relatively simple degree of freedom in polishing and it is difficult to achieve multi-degree-of-freedom polishing.

[0005] (II) Technical Solution

[0006] A flexible floating connection device includes a housing, a Z-axis floating seat, a floating disk, an end connecting disk, and several elastic fixing members;

[0007] The outer shell has an internal space, and a fixing plate is provided inside the outer shell. The fixing plate divides the internal space of the outer shell into a first mounting cavity and a second mounting cavity. One end of the outer shell has a first opening that communicates with the first mounting cavity, and the other end has a second opening that communicates with the second mounting cavity.

[0008] The Z-axis floating seat is disposed in the first mounting cavity, and a plurality of elastic elements are connected between the Z-axis floating seat and the outer shell. The elastic elements are used to provide the Z-axis floating seat with a floating stroke along the axial direction of the outer shell.

[0009] The outer shell has a plurality of threaded holes evenly distributed around its axis on its circumferential surface. The threaded holes are connected to the second mounting cavity and are arranged along the radial direction of the outer shell. Each threaded hole is equipped with an elastic retaining member, which can extend and retract along the radial direction of the threaded hole. The floating disk is disposed in the second mounting cavity, and the elastic retaining member acts on the circumferential surface of the floating disk.

[0010] One end of the end connecting plate extends from the second opening of the housing into the second mounting cavity and is connected to the floating plate. The end of the end connecting plate away from the floating plate is used to connect to the polishing plate.

[0011] According to one embodiment of the present utility model, the outer shell includes an upper fixed seat, a fixed plate and a lower fixed seat connected in sequence. The space between the upper fixed seat and the fixed plate forms the first mounting cavity, and the first opening is provided on the upper fixed seat. The space between the lower fixed seat and the fixed plate forms the second mounting cavity, and the second opening is provided on the lower fixed seat.

[0012] The inner wall of the first mounting cavity is formed with a stepped surface, and the Z-axis floating seat is located in the space below the stepped surface. Multiple elastic elements are connected between the Z-axis floating seat and the fixed plate.

[0013] According to one embodiment of the present invention, there is a gap between the outer peripheral surface of the Z-axis floating seat and the inner wall of the first mounting cavity.

[0014] According to one embodiment of the present invention, the elastic element is a floating spring, and the fixed plate has a groove corresponding to the floating spring on the side facing the upper fixed seat. One end of the floating spring is fixed to the inner bottom wall of the groove, and the other end is connected to the Z-axis floating seat.

[0015] According to one embodiment of the present invention, the elastic retaining member includes a locking pin, a radial return spring, and an elastic adjustment screw; the elastic adjustment screw is threadedly installed in the threaded hole of the lower fixed seat, and a radial return spring is connected to the end of the elastic adjustment screw facing the floating plate, and the end of the radial return spring away from the elastic adjustment screw is connected to the locking pin.

[0016] According to one embodiment of the present invention, the floating disk is provided with a first ball groove on the side facing the fixed disk, and a plurality of first steel balls are embedded in the first ball groove.

[0017] According to one embodiment of the present invention, a second ball groove is provided on the inner bottom wall of the lower fixed seat, and a plurality of second steel balls are embedded in the second ball groove.

[0018] According to one embodiment of the present utility model, the floating disk is provided with at least one countersunk hole, and the end connecting disk includes a disk body and a cylinder connected together. The disk body and the cylinder are coaxially arranged, and the cylinder is provided with bolt holes corresponding one-to-one with the countersunk holes.

[0019] The bolt holes of the end connecting plate and the countersunk holes of the floating plate are connected by locking bolts.

[0020] According to one embodiment of the present invention, the upper fixed seat, the fixed plate, and the lower fixed seat are connected by fastening bolts; the upper fixed seat has a straight hole for the fastening bolt to pass through, the fixed plate has a round hole for the fastening bolt to pass through, and the lower fixed seat has a fastening bolt hole adapted to the fastening bolt, wherein the straight hole, the round hole, and the fastening bolt hole correspond one-to-one.

[0021] A polishing machine includes the aforementioned flexible floating connection device.

[0022] The beneficial effects of this utility model are:

[0023] Because there are multiple elastic elements between the Z-axis floating seat and the fixed plate, the polishing machine has compensation in the Z-axis direction and a certain floating stroke in the Z-axis direction. The floating plate is fixed by multiple elastic retaining elements, and because the elastic retaining elements can extend and retract in the radial direction of the lower fixed seat, the floating plate has the ability to float flexibly in the X / Y axis direction. That is to say, it has the ability to float adaptively in the horizontal plane, so that the polishing plate can adaptively deflect along the normal of the workpiece surface.

[0024] Therefore, compared to traditional flexible connection devices for polishing machines, this flexible connection device has at least the following advantages: Firstly, the polishing machine equipped with this flexible connection device has compensation in the X, Y, and Z axes. It possesses compensation in the Z-axis direction and the ability to flexibly float in the X / Y axes, allowing the polishing disc to adaptively deflect along the normal direction of the workpiece surface. Secondly, the polishing machine equipped with this flexible connection device has multi-degree-of-freedom polishing capabilities, improving the polishing accuracy of the workpiece surface and resulting in high polishing efficiency. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A front view of the flexible floating connection device provided in an embodiment of this utility model;

[0027] Figure 2 A top view of the flexible floating connection device provided in an embodiment of this utility model;

[0028] Figure 3 Provided for the embodiments of this utility model Figure 2 Sectional view of BB;

[0029] Figure 4 Provided for the embodiments of this utility model Figure 2 Sectional view of CC;

[0030] Figure 5 This is a front view of the flexible floating connection device after an explosion, provided in an embodiment of the present invention.

[0031] Figure 6 A perspective view of the flexible floating connection device after an explosion, provided in an embodiment of this utility model;

[0032] Figure 7 Structural diagram of the lower fixing base, end connecting plate and elastic fastener provided in the embodiment of this utility model;

[0033] Figure 8 A cross-sectional view of the lower fixing seat, the end connecting plate, and the elastic fastener provided in an embodiment of this utility model.

[0034] Icons: 1. Upper fixed seat; 101. First opening; 102. Stepped surface; 2. Z-axis floating seat; 3. Floating spring; 4. Fixed plate; 401. Round hole; 5. Floating plate; 6. First steel ball; 7. Second steel ball; 8. Lower fixed seat; 801. Second ball groove; 802. Fastening bolt hole; 9. End connecting plate; 901. Plate body; 902. Cylinder; 903. Bolt hole; 10. Radial return spring; 11. Spring adjustment set screw; 12. Fastening bolt; 13. Locking bolt; 14. Locking pin; 15. Positioning pin. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] like Figures 1-8 As shown, one embodiment of the present invention provides a flexible floating connection device, including an upper fixed seat 1, a Z-axis floating seat 2, a fixed disk 4, a floating disk 5, a lower fixed seat 8, and an end connecting disk 9, wherein the upper fixed seat 1, the fixed disk 4, and the lower fixed seat 8 are connected in sequence;

[0037] A first mounting cavity is formed between the upper fixed seat 1 and the fixed plate 4. The upper fixed seat 1 is provided with a first opening 101 that communicates with the first mounting cavity at the end away from the fixed plate 4. A stepped surface 102 is formed on the inner wall of the first mounting cavity. The Z-axis floating seat 2 is disposed in the first mounting cavity and is limited to the space below the stepped surface 102. Multiple elastic elements are connected between the Z-axis floating seat 2 and the fixed plate 4.

[0038] A second mounting cavity is formed between the lower fixed seat 8 and the fixed plate 4. The lower fixed seat 8 is provided with a second opening that communicates with the second mounting cavity at one end away from the fixed plate 4. Multiple threaded holes are evenly opened around its axis on the circumferential surface of the lower fixed seat 8. The threaded holes are arranged in the radial direction of the lower fixed seat 8. An elastic retaining member is installed in each threaded hole. The elastic retaining member can extend and retract in the radial direction of the lower fixed seat 8. The floating plate 5 is disposed in the second mounting cavity. The elastic retaining member acts on the circumferential surface of the floating plate 5.

[0039] One end of the end connecting plate 9 extends into the second mounting cavity from the second opening of the lower fixed base 8 and is connected to the floating plate 5. The end of the end connecting plate 9 away from the lower fixed base 8 is used to connect to the polishing plate.

[0040] In this embodiment, when using this flexible floating connection device, the Z-axis floating seat 2 is connected to the robotic arm of the polishing machine, and the polishing disc is installed on the end of the end connecting disc 9 away from the lower fixed seat 8. Since multiple elastic elements are provided between the Z-axis floating seat 2 and the fixed disc 4, the polishing machine has compensation in the Z-axis direction, and the polishing machine has a certain floating stroke in the Z-axis direction; while the floating disc 5 is fixed by multiple elastic retaining elements, and since the elastic retaining elements can extend and retract in the radial direction of the lower fixed seat 8, the floating disc 5 has the ability to float flexibly in the X / Y axis direction, that is, it has the ability to float 360° adaptively in the horizontal plane, so that the polishing disc can adaptively deflect along the normal of the workpiece surface.

[0041] Therefore, compared to traditional flexible connection devices for polishing machines, this flexible connection device has at least the following advantages: Firstly, the polishing machine equipped with this flexible connection device has compensation in the X, Y, and Z axes. It possesses compensation in the Z-axis direction and the ability to flexibly float in the X / Y axes, allowing the polishing disc to adaptively deflect along the normal direction of the workpiece surface. Secondly, the polishing machine equipped with this flexible connection device has multi-degree-of-freedom polishing capabilities, improving the polishing accuracy of the workpiece surface and resulting in high polishing efficiency.

[0042] In this embodiment, the upper fixing seat 1 is a round cover, the lower fixing seat 8 is also a round cover, and the fixing plate 4 is a disc. The outer diameters of the upper fixing seat 1 and the lower fixing seat 8 are the same, and the diameter of the fixing plate 4 is the same as the outer diameter of the upper fixing seat 1. After the bottom of the upper fixing seat 1, the fixing plate 4, and the top of the lower fixing seat 8 are connected by fastening bolts 12, the top surface of the fixing plate 4 and the internal space of the upper fixing seat 1 form the first mounting cavity, while the bottom surface of the fixing plate 4 and the internal space of the lower fixing seat 8 form the second mounting cavity. The first mounting cavity and the second mounting cavity are isolated from each other.

[0043] Since the outer diameters of the upper fixed seat 1 and the lower fixed seat 8 are the same, and the diameter of the fixed plate 4 is the same as the outer diameter of the upper fixed seat 1, after the upper fixed seat 1, the fixed plate 4 and the lower fixed seat 8 are assembled together, the circumferential surfaces of the upper fixed seat 1, the fixed plate 4 and the lower fixed seat 8 are connected in sequence to form a whole.

[0044] like Figure 2 and Figure 3 As shown, the top of the upper fixed base 1 has a first opening 101, which communicates with the internal cavity of the upper fixed base 1. The first opening 101 is coaxially arranged with the upper fixed base 1. The robotic arm extends into the internal cavity of the upper fixed base 1 through the first opening 101 to connect with the Z-axis floating base 2. Additionally, as... Figure 3 As shown, the diameter of the first opening 101 is smaller than the diameter of the internal space of the upper fixed seat 1. Therefore, a stepped surface 102 is formed at the connection between the internal space of the upper fixed seat 1 and the first opening 101. The stepped surface 102 includes a horizontal annular surface and a vertical annular surface. The horizontal annular surface is lower than the vertical annular surface. The diameter of the Z-axis floating seat 2 is smaller than the diameter of the internal space of the upper fixed seat 1 and larger than the diameter of the first opening 101 of the upper fixed seat 1. Therefore, the upper fixed seat 1 will be blocked by the horizontal annular surface of the stepped surface 102.

[0045] In this embodiment, the elastic element is a floating spring 3. The two ends of the floating spring 3 are connected to the bottom surface of the Z-axis floating seat 2 and the top surface of the fixed plate 4, respectively. Multiple floating springs 3 are provided, and the multiple floating springs 3 are evenly arranged around the axis of the Z-axis floating seat 2.

[0046] During polishing, the floating spring 3's elastic deformation provides compensation in the Z-axis direction. It should be noted that the upper fixed seat 1, the fixed plate 4, and the lower fixed seat 8 are arranged along the Z-axis. Specifically, the stiffness of the floating spring 3 is adjustable from 80-150 N / mm.

[0047] In some embodiments, such as Figure 3As shown, since the diameter of the Z-axis floating seat 2 is smaller than the diameter of the internal space of the upper fixed seat 1, there is a gap between the circumferential surface of the Z-axis floating seat 2 and the inner wall of the internal space of the upper fixed seat 1. Due to the existence of this gap, the Z-axis floating seat 2 has a certain swing angle in the X and Y axis directions. That is to say, the Z-axis floating seat 2 can swing slightly left and right or back and forth around its own axis. Therefore, when using this floating device, the angle of sway can be adaptive according to the actual planar state of the product being worked on, thereby mimicking the state of manual operation to a greater extent and increasing the smoothness of operation.

[0048] Specifically, there is a gap of 0.15mm-0.2mm between the circumference of the Z-axis floating seat 2 and the inner cavity of the upper fixed seat 1.

[0049] In some embodiments, such as Figure 3 As shown, multiple grooves corresponding to the floating springs 3 are formed on the top surface of the fixed plate 4, and the bottom end of the floating spring 3 is fixed to the inner bottom wall of the groove. In this way, a floating spring 3 with a larger elastic coefficient can be installed in the effective space between the fixed plate 4 and the floating plate 5, and the groove can also provide a certain guiding function for the floating spring 3.

[0050] In this embodiment, as Figure 3 As shown, the elastic retaining member includes a locking pin 14, a radial return spring 10, and a spring force adjusting screw 11. The spring force adjusting screw 11 is threaded into the threaded hole of the lower fixed seat 8. The radial return spring 10 is connected to the end of the spring force adjusting screw 11 facing the floating plate 5. The end of the radial return spring 10 away from the spring force adjusting screw 11 is connected to the locking pin 14.

[0051] Thus, multiple radial return springs 10 apply a force along the radial direction of the floating disk 5 to the corresponding locking pins 14, causing multiple locking pins 14 to act simultaneously on the floating disk 5 from different positions, thereby securing the floating disk 5. Because the radial return springs 10 have elastic deformation, the floating disk 5 has the ability to self-float in the horizontal direction, thus having a certain floating stroke. Furthermore, the cooperation of multiple radial return springs 10 ensures that the floating disk 5 automatically returns to its original position after floating, and the positioning accuracy of the floating disk 5 after floating and resetting can reach ±0.1mm.

[0052] In this embodiment, the spring preload of the radial return spring 10 can be adjusted and controlled by the elastic adjustment set screw 11, and the adjustment accuracy can reach ±2N.

[0053] In this embodiment, as Figure 3As shown, a second ball groove 801 is provided on the inner bottom wall of the lower fixed seat 8, and a plurality of second steel balls 7 are embedded in the second ball groove 801. The floating disk 5 rests on the second steel balls 7. A first ball groove is provided on the side of the floating disk 5 facing the fixed disk 4, and a plurality of first steel balls 6 are embedded in the first ball groove. The first steel balls 6 roll in contact with the bottom surface of the fixed disk 4.

[0054] Since the floating disk 5 and the steel balls have rolling friction, the friction force is very small. Therefore, the floating disk 5 can float more easily in the X / Y axis direction. That is, the first steel ball 6 and the second steel ball 7 are used to eliminate the lateral rigid constraint, so that the polishing disk can adaptively deflect ±15° along the normal of the workpiece surface.

[0055] Experimental calculations show that the rolling friction coefficient between the first steel ball 6 and the fixed disk 4 is ≤0.05, and the rolling friction coefficient between the second steel ball 7 and the floating disk 5 is ≤0.05.

[0056] In this embodiment, as Figure 3 and Figure 6 As shown, multiple countersunk holes are evenly distributed around the axis of the floating disk 5. The end connecting disk 9 includes a disk body 901 and a cylinder 902 connected to each other. The disk body 901 and the cylinder 902 are coaxially arranged. The diameter of the second opening of the lower fixing seat 8 is slightly larger than the diameter of the cylinder 902 to ensure that the cylinder 902 of the end connecting disk 9 can extend into the interior of the lower fixing seat 8 from the second opening of the lower fixing seat 8. In addition, bolt holes 903 corresponding to the countersunk holes are provided on the cylinder 902.

[0057] When connecting the end connecting plate 9 and the floating plate 5, simply place the floating plate 5 on the top of the cylinder 902 of the end connecting plate 9, aligning the countersunk hole on the floating plate 5 with the bolt hole 903 on the cylinder 902. Then, insert the locking bolt 13 into the countersunk hole of the floating plate 5 and tighten it until the head of the locking bolt 13 extends into the countersunk hole of the floating plate 5. In other words, the locking bolt 13 is a countersunk bolt.

[0058] It should be noted that the countersunk hole on the floating disk 5 is a threaded hole.

[0059] In this embodiment, as Figure 6As shown, the top of the upper fixing seat 1 has multiple straight holes evenly spaced around its axis for the fastening bolts 12 to pass through. The fixing plate 4 has multiple round holes 401 evenly spaced around its axis for the fastening bolts 12 to pass through. The lower fixing seat 8 has multiple fastening bolt holes 802 evenly spaced around its axis to match the fastening bolts 12. The straight holes, round holes 401, and fastening bolt holes 802 correspond one-to-one. Thus, after aligning the upper fixing seat 1, fixing plate 4, and lower fixing seat 8, the fastening bolts 12 are inserted into the straight holes at the top of the upper fixing seat 1. The bottom end of the fastening bolt 12 passes through the straight holes of the upper fixing seat 1 and the round holes 401 on the fixing plate 4, and then enters the fastening bolt holes 802 of the lower fixing seat 8. Finally, the fastening bolts 12 are tightened. The straight holes and round holes 401 are through holes, while the fastening bolt holes 802 on the lower fixing seat 8 are bolt holes.

[0060] Preferably, the fastening bolt 12 is a countersunk bolt, and the straight hole at the top of the upper fixing seat 1 is a countersunk hole.

[0061] Optionally, multiple first grooves are formed around the axis on the bottom surface of the upper fixing base 1, multiple insertion holes are formed around the axis on the fixing plate 4, and multiple second grooves are formed around the axis on the top surface of the lower fixing base 8. The first grooves, insertion holes, and second grooves correspond one-to-one. When the upper fixing base 1, fixing plate 4, and lower fixing base 8 are aligned, the corresponding first grooves, insertion holes, and second grooves are sequentially connected. Figure 4 As shown, a positioning pin 15 is inserted into the first groove, the slot, and the second groove.

[0062] The positioning pin 15 is set to serve as the installation positioning, which facilitates the assembly of the upper fixed seat 1, the fixed plate 4 and the lower fixed seat 8.

[0063] When assembling this flexible floating connection device, first place the lower fixed seat 8 on the end connecting plate 9 so that the cylinder 902 of the end connecting plate 9 passes through the second opening of the lower fixed seat 8. Then, place the floating plate 5 from above the lower fixed seat 8 onto the cylinder 902 of the end connecting plate 9. Then, use the locking bolt 13 to connect the cylinder 902 of the end connecting plate 9 and the floating plate 5.

[0064] Next, vertically insert the positioning pin 15 into the second groove of the lower fixing seat 8, then align the fixing plate 4 with the lower fixing seat 8 so that the insertion hole on the fixing plate 4 is aligned with the positioning pin 15, and then lower the fixing plate 4, with the top of the positioning pin 15 passing through the insertion hole on the fixing plate 4.

[0065] Next, place the Z-axis floating seat 2 (with floating spring 3) on the fixed plate 4, then place the upper fixed seat 1 on the fixed plate 4, and ensure that the top of the positioning pin 15 is inserted into the first groove of the upper fixed seat 1. Then, put the fastening bolt 12 into the straight hole at the top of the upper fixed seat 1. The bottom end of the fastening bolt 12 passes through the straight hole of the upper fixed seat 1 and the round hole 401 on the fixed plate 4 in sequence, and then enters the fastening bolt hole 802 of the lower fixed seat 8. Finally, tighten the fastening bolt 12.

[0066] Finally, threaded fasteners are screwed into the through holes of each lower fixed seat 8, and the spring adjustment screw 11 is tightened. Multiple locking pins 14 act on the floating plate 5 at the same time, thereby fixing the floating plate 5 in place.

[0067] It is evident that this flexible floating connection device possesses the following advantages:

[0068] First, the floating spring 3 between the Z-axis floating seat 2 and the fixed disk 4 allows the polishing head to move adaptively up and down in the vertical direction (Z-axis). The polishing head has a certain floating stroke in the Z-axis direction, and the floating spring 3 can absorb equipment vibration and maintain constant polishing pressure. The floating disk 5 is subjected to radial elastic constraint by the elastic retaining components (locking pin 14, radial return spring 10, and elastic adjustment set screw 11), so that the polishing disk can float flexibly in the horizontal plane (X / Y axis) and achieve 360° adaptive deflection. Combining the Z-axis linear floating and XY plane floating, the polishing head can adaptively deflect (±15°) along the normal of the workpiece surface, perfectly conforming to complex curved surfaces, realizing multi-degree-of-freedom polishing, and achieving high polishing efficiency.

[0069] Secondly, there is a gap between the circumferential surface of the Z-axis floating seat 2 and the inner wall of the internal space of the upper fixed seat 1. When using this floating device, it can achieve adaptive angle swaying according to the actual planar state of the product being worked on, thereby mimicking the state of manual operation to a greater extent and increasing the smoothness of operation.

[0070] Third, the first steel ball 6 and the second steel ball 7 are used to eliminate lateral rigid constraints, greatly reducing the lateral friction of the floating disk 5, making the floating disk 5 move more flexibly and respond more quickly.

[0071] Fourth, the upper fixed seat 1, the fixed plate 4, and the lower fixed seat 8 are precisely assembled by fastening bolts 12 and positioning pins 15 to ensure overall rigidity and coaxiality and avoid motion interference.

[0072] Fifth, this flexible floating connection device is suitable for polishing curved workpieces (such as molds, blades, optical lenses, etc.), and can cover curved surfaces with a curvature radius ≥3mm. Its adaptive deflection performance can ensure uniform polishing pressure distribution, reduce over-polishing or under-polishing, and improve surface quality.

[0073] In summary, this flexible floating connection device enables precise tracking of the polishing head along the normal direction of the curved surface, significantly improving polishing accuracy, efficiency, and adaptability, and is especially suitable for curved surface polishing scenarios.

[0074] Another embodiment of the present invention provides a polishing machine, which includes a robotic arm, the aforementioned flexible floating connection device, and a polishing disc connected in sequence.

[0075] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible floating connection device, characterized in that It includes a housing, a Z-axis floating seat (2), a floating disk (5), an end connecting disk (9), and several elastic fasteners; The shell has an interior space, and a fixing plate (4) is provided inside the shell. The fixing plate (4) divides the interior space of the shell into a first mounting cavity and a second mounting cavity. One end of the shell has a first opening (101) that communicates with the first mounting cavity, and the other end has a second opening that communicates with the second mounting cavity. The Z-axis floating seat (2) is disposed in the first mounting cavity. A plurality of elastic elements are connected between the Z-axis floating seat (2) and the outer shell. The elastic elements are used to provide the Z-axis floating seat (2) with a floating stroke along the axial direction of the outer shell. The outer shell has a plurality of threaded holes evenly provided around its axis on its circumferential surface. The threaded holes are connected to the second mounting cavity and are arranged along the radial direction of the outer shell. Each threaded hole is equipped with an elastic retaining member. The elastic retaining member can extend and retract along the radial direction of the threaded hole. The floating disk (5) is arranged in the second mounting cavity. The elastic retaining member acts on the circumferential surface of the floating disk (5). One end of the end connecting plate (9) extends from the second opening of the housing into the second mounting cavity and is connected to the floating plate (5). The end of the end connecting plate (9) away from the floating plate (5) is used to connect to the polishing plate.

2. A flexible floating connection device according to claim 1, characterized in that The outer casing includes an upper fixed seat (1), a fixed plate (4) and a lower fixed seat (8) connected in sequence. The space between the upper fixed seat (1) and the fixed plate (4) forms the first mounting cavity. The first opening (101) is provided on the upper fixed seat (1). The space between the lower fixed seat (8) and the fixed plate (4) forms the second mounting cavity. The second opening is provided on the lower fixed seat (8). The inner wall of the first mounting cavity is formed with a stepped surface (102), and the Z-axis floating seat (2) is located in the space below the stepped surface (102). A plurality of elastic elements are connected between the Z-axis floating seat (2) and the fixed plate (4).

3. The flexible floating connection device according to claim 2, characterized in that, There is a gap between the outer peripheral surface of the Z-axis floating seat (2) and the inner wall of the first mounting cavity.

4. A flexible floating connection device according to claim 2, characterized in that The elastic element is a floating spring (3). The fixed plate (4) has a groove on one side facing the upper fixed seat (1) that corresponds to the floating spring (3). One end of the floating spring (3) is fixed to the inner bottom wall of the groove, and the other end is connected to the Z-axis floating seat (2).

5. A flexible floating connection device according to claim 2, characterized in that The elastic retaining member includes a locking pin (14), a radial return spring (10), and an elastic adjustment screw (11); the elastic adjustment screw (11) is threaded into the threaded hole of the lower fixed seat (8), and the radial return spring (10) is connected to the end of the elastic adjustment screw (11) facing the floating plate (5), and the end of the radial return spring (10) away from the elastic adjustment screw (11) is connected to the locking pin (14).

6. A flexible floating connection device according to claim 5, characterized in that The floating disk (5) has a first ball groove on the side facing the fixed disk (4), and a plurality of first steel balls (6) are embedded in the first ball groove.

7. A flexible floating connection device according to claim 6, characterized in that, The lower fixed seat (8) has a second ball groove (801) on its inner bottom wall, and a plurality of second steel balls (7) are embedded in the second ball groove (801).

8. A flexible floating connection device according to claim 7, characterized in that The floating disk (5) has at least one countersunk hole. The end connecting disk (9) includes a disk body (901) and a cylinder (902) connected to each other. The disk body (901) and the cylinder (902) are coaxially arranged. The cylinder (902) has bolt holes (903) that correspond one-to-one with the countersunk holes. The bolt hole (903) of the end connecting plate (9) and the countersunk hole of the floating plate (5) are connected by a locking bolt (13).

9. A flexible floating connection device according to claim 2, characterized in that The upper fixed seat (1), the fixed plate (4), and the lower fixed seat (8) are connected by fastening bolts (12); the upper fixed seat (1) has a straight hole for the fastening bolt (12) to pass through, the fixed plate (4) has a round hole (401) for the fastening bolt (12) to pass through, and the lower fixed seat (8) has a fastening bolt hole (802) that is compatible with the fastening bolt (12). The straight hole, the round hole (401), and the fastening bolt hole (802) correspond one-to-one.

10. A polishing machine characterized by, Includes a flexible floating connection device as described in any one of claims 1-9.

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