A three-axis floating positioning platform

Abstract

This invention relates to a three-axis floating positioning platform, comprising: a fixed base; a three-axis floating platform, mounted on the fixed base, including an X-axis floating platform, a Y-axis floating platform, and an R-axis floating platform; and a locking mechanism, mounted on the fixed base, comprising: a connecting block cooperating with the fixed base; a support shaft mounted on the connecting block; a handle sleeved on the support shaft; and a first cam, a second cam, and a third cam connected to the handle. The first cam, second cam, and third cam respectively engage with the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform for limiting their movement. Rotating the handle causes the first cam, second cam, and third cam to rotate, thereby unlocking or locking the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform. This invention not only achieves the centering and positioning function of existing three-axis floating mechanisms but also locks the platform's position after centering and positioning, preventing it from floating.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a three-axis floating positioning platform. Background Technology

[0002] During product assembly, if the product shape or position tolerance is large, traditional fixed assembly mechanisms are difficult to meet the accuracy requirements. It is necessary to visually position the components before accurately moving them to the docking position to complete the assembly. However, the cost of using visual positioning equipment is high. Therefore, existing technologies all use floating positioning to achieve self-adaptive alignment of the product.

[0003] For example, Chinese patent CN206747912U, entitled "A Three-Axis Floating Mechanism," discloses a three-axis floating positioning device, comprising: a base plate, an upper platform, a lower platform, a rotary bearing, a linear bearing assembly, and a guide shaft. The rotary bearing is located in the middle of the base plate, and the lower platform is mounted on the rotary bearing. The upper platform is connected to the lower platform via the linear bearing assembly and the guide shaft. The upper and lower platforms can rotate synchronously via the rotary bearing, and the upper platform can move linearly relative to the lower platform via the linear bearing assembly and the guide shaft. Compared with existing technologies, it can perform linear movements in the X and Y axes, and simultaneously rotate around the Z axis. By simultaneously adjusting the positioning accuracy through the three-axis linkage, the assembly only needs to be adjusted to the appropriate position, and then the component is lowered to complete the alignment and assembly. Using this three-axis positioning mechanism can improve the alignment efficiency of product assembly.

[0004] However, as disclosed in the prior art, the existing three-axis floating positioning mechanisms cannot lock their positions after achieving floating positioning. The platform still has floating properties after positioning, so the assembled products will shake due to inertia in subsequent processing steps, affecting subsequent processing. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the existing three-axis floating mechanism cannot be locked after centering and positioning, and to provide a three-axis floating positioning platform that can not only realize the centering and positioning function of the existing three-axis floating mechanism, but also lock the position of the platform after centering and positioning so that it no longer floats and does not affect the subsequent processing technology.

[0006] To solve the above-mentioned technical problems, the present invention provides a three-axis floating positioning platform, comprising:

[0007] Fixed base;

[0008] A three-axis floating platform is mounted on a fixed base, including: an X-axis floating platform, a Y-axis floating platform, and an R-axis floating platform;

[0009] A locking mechanism is provided on the fixed base. The locking mechanism includes: a connecting block that cooperates with the fixed base, a support shaft provided on the connecting block, a handle sleeved on the support shaft, and a first cam, a second cam, and a third cam connected to the handle.

[0010] The first cam, the second cam, and the third cam are respectively engaged with the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform. Rotating the handle causes the first cam, the second cam, and the third cam to rotate, which can unlock or lock the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform.

[0011] In one embodiment of the present invention, the X-axis floating platform includes:

[0012] The first slide rail is set along the extension direction of the X-axis;

[0013] The first slide is mounted on the first slide rail and slides on the first slide rail;

[0014] A first limiting through hole is provided in the first slide, and a first cam is provided in the first limiting through hole. The first limiting through hole has two first limiting sidewalls, which are distributed correspondingly along the X-axis. The first cam is provided between the two first limiting sidewalls. When the first cam is rotated, both ends of the first cam can abut against the two first limiting sidewalls respectively.

[0015] In one embodiment of the present invention, the Y-axis floating platform includes:

[0016] The second slide rail is set along the extension direction of the Y-axis;

[0017] The second slide is mounted on the second slide rail and slides on the second slide rail;

[0018] A second limiting through hole is provided in the second slide, and a second cam is provided in the second limiting through hole. The second limiting through hole has two second limiting sidewalls, which are distributed correspondingly along the Y-axis. The second cam is provided between the two second limiting sidewalls. When the second cam is rotated, both ends of the second cam can abut against the two second limiting sidewalls respectively.

[0019] In one embodiment of the present invention, the R-axis floating platform includes:

[0020] Rotary seat;

[0021] A turntable is mounted on the rotating base;

[0022] Two turntable limiting holes are provided on the turntable, and the two turntable limiting holes are symmetrically distributed with the center of the turntable as the axis. The turntable limiting holes have included angle limiting sidewalls.

[0023] Two turntable sliders, one end of which has a limiting block that can extend into the turntable limiting hole and slide in the turntable limiting hole, and the other end of which has a roller that abuts against the third cam. When the third cam is rotated, the roller rolls on the outer periphery of the third cam, and the third cam pushes the turntable slider so that the limiting block abuts against the included angle limiting sidewall.

[0024] In one embodiment of the present invention, the R-axis floating platform is disposed on the X-axis floating platform and the Y-axis floating platform, and the X-axis floating platform and the Y-axis floating platform are provided with grooves for the turntable slider to pass through, and the X-axis floating platform is provided with a guide pin extending into the turntable slider.

[0025] In one embodiment of the present invention, the R-axis floating platform is disposed on the X-axis floating platform and the Y-axis floating platform, and the X-axis floating platform and the Y-axis floating platform are provided with grooves for the turntable slider to pass through, and the Y-axis floating platform is provided with a guide rail to support the turntable slider.

[0026] In one embodiment of the present invention, the locking angles of the first cam, the second cam, and the third cam are set to be the same, and rotating the handle simultaneously unlocks or locks the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform.

[0027] In one embodiment of the present invention, the locking angles of the first cam, the second cam, and the third cam are set to be different, and the rotating handles respectively realize the unlocking or locking of the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform.

[0028] In one embodiment of the present invention, a fixing groove is provided in the fixing base, and the connecting block is inserted into the fixing groove for limiting.

[0029] In one embodiment of the present invention, an unlocking stop block and a locking stop block are provided on the fixed base.

[0030] The technical solution of the present invention has the following advantages compared with the prior art:

[0031] The three-axis floating positioning platform of the present invention is equipped with an X-axis floating platform, a Y-axis floating platform and an R-axis floating platform, which can realize floating adaptive positioning assembly in the X-axis, Y-axis and rotation direction on the horizontal plane, effectively avoiding assembly misalignment caused by large product shape and position tolerances, and improving assembly accuracy;

[0032] Furthermore, the three-axis floating positioning platform of the present invention is also equipped with a locking mechanism, and a cam is set to limit the platform. Rotating the cam can enable the positioning platform to freely switch between two modes: floating state and fixed state. This not only enables the centering and positioning function of the three-axis floating mechanism, but also locks the position of the platform after centering and positioning, so that it no longer floats and does not affect the subsequent processing technology. Attached Figure Description

[0033] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0034] Figure 1 This is a schematic diagram of the overall structure of the three-axis floating positioning platform of the present invention;

[0035] Figure 2 This is an exploded structural diagram of the three-axis floating positioning platform of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the fixed base of the present invention;

[0037] Figure 4 This is a schematic diagram of the X-axis floating platform of the present invention;

[0038] Figure 5 This is a schematic diagram of the Y-axis floating platform of the present invention;

[0039] Figure 6 This is a schematic diagram of the R-axis floating platform of the present invention;

[0040] Figure 7 This is a schematic diagram of the structure of the turntable slider of the present invention;

[0041] Figure 8 This is a schematic diagram of the locking mechanism of the present invention.

[0042] Instruction manual drawing reference numerals: 1. Fixed base; 11. Fixed groove; 12. Unlocking stop block; 13. Locking stop block; 2. X-axis floating platform; 21. First slide rail; 22. First slide table; 23. First limiting through hole; 24. First limiting side wall; 3. Y-axis floating platform; 31. Second slide rail; 32. Second slide table; 33. Second limiting through hole; 34. Second limiting side wall; 4. R-axis floating platform; 41. Rotary seat; 42. Turntable; 43. Turntable limiting hole; 44. Angle limiting side wall; 45. Turntable slider; 451. Limiting block; 452. Roller; 46. Guide pin; 47. Guide rail; 5. Locking mechanism; 51. Connecting block; 52. Handle; 53. First cam; 54. Second cam; 55. Third cam. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0044] As shown above, the three-axis floating platform can center and position the assembly, enabling rapid assembly. Generally, after assembly, the assembly is removed from the three-axis floating platform and placed on a fixed platform for subsequent processes. However, in some cases, the three-axis floating platform can be moved to the next workstation to carry the assembly for subsequent processing. In this case, the three-axis floating platform needs to be fixed. Existing technologies use external positioning equipment or positioning pins to position the three-axis floating platform. Therefore, additional process steps or other equipment are needed to lock the three-axis floating platform, increasing costs or process complexity.

[0045] To address the aforementioned issues, this invention provides a three-axis floating positioning platform that can freely switch between floating and fixed modes. It not only enables the centering and positioning function of the three-axis floating mechanism but also locks the platform's position after centering and positioning, preventing it from floating and thus ensuring that subsequent processing is not affected.

[0046] The three-axis floating positioning platform of the present invention will be further explained below with reference to specific embodiments.

[0047] Reference Figure 1 and Figure 2 As shown, the three-axis floating positioning platform of the present invention includes: a fixed base 1, a three-axis floating platform, and a locking mechanism 5, wherein: the three-axis floating platform and the locking mechanism 5 are both disposed on the fixed base 1;

[0048] The three-axis floating platform includes: an X-axis floating platform 2, a Y-axis floating platform 3, and an R-axis floating platform 4. The X-axis floating platform 2 can slide along the X-axis on the horizontal plane, the Y-axis floating platform 3 can slide along the Y-axis on the horizontal plane, and the R-axis floating platform 4 can rotate on the horizontal plane.

[0049] Reference Figure 8 As shown, the locking mechanism 5 includes: a connecting block 51, a support shaft, a handle 52, a first cam 53, a second cam 54, and a third cam 55, wherein: the connecting block 51 is fixedly connected to the fixed base 1, the support shaft is fixedly mounted on the connecting block 51 and extends upward, the handle 52, the first cam 53, the second cam 54, and the third cam 55 are all sleeved on the support shaft, the handle 52 can rotate relative to the support shaft, and the first cam 53, the second cam 54, and the third cam 55 are fixedly connected to the handle 52;

[0050] Specifically, the locking mechanism 5 is located at the center of the fixed base 1. The support shaft passes through the X-axis floating platform 2, the Y-axis floating platform 3, and the R-axis floating platform 4 in sequence. The first cam 53, the second cam 54, and the third cam 55 have two positional relationships with the X-axis floating platform 2, the Y-axis floating platform 3, and the R-axis floating platform 4: one is that they do not affect each other, and the other is that they are in a limiting fit relationship. Rotating the handle 52 causes the first cam 53, the second cam 54, and the third cam 55 to rotate, which can switch between these two positional relationships, thereby unlocking or locking the X-axis floating platform 2, the Y-axis floating platform 3, and the R-axis floating platform 4.

[0051] The three-axis floating positioning platform of the present invention is provided with an X-axis floating platform 2, a Y-axis floating platform 3 and an R-axis floating platform 4, which can realize floating adaptive positioning assembly in the X-axis, Y-axis and rotation direction on the horizontal plane, effectively avoiding assembly misalignment caused by large tolerances in product shape and position, and improving assembly accuracy.

[0052] Furthermore, the three-axis floating positioning platform of the present invention is also provided with a locking mechanism 5, which sets a cam to cooperate with the platform for limiting. Rotating the cam can enable the positioning platform to freely switch between two modes: floating state and fixed state. This not only enables the centering and positioning function of the three-axis floating mechanism, but also locks the position of the platform after centering and positioning, so that it no longer floats and does not affect the subsequent processing technology.

[0053] In this embodiment, the X-axis floating platform 2 is mounted on the fixed base 1, the Y-axis floating platform 3 is mounted on the X-axis floating platform 2, and the R-axis floating platform 4 is mounted on the Y-axis floating platform 3. In other embodiments, the positions and connections of the three floating platforms can also be adjusted.

[0054] Reference Figure 3 As shown, a fixing groove 11 is provided in the fixing base 1, and the connecting block 51 is inserted into the fixing groove 11. The connecting block 51 is connected to the fixing base 1 by bolts, thereby ensuring that the position of the support shaft is fixed and preventing the support shaft from rotating when the handle 52 is turned.

[0055] Furthermore, an unlocking stop block 12 and a locking stop block 13 are also provided on the fixed base 1. The handle 52 rotates between the unlocking stop block 12 and the locking stop block 13. When the handle 52 abuts against the unlocking stop block 12, it indicates that the positioning platform is in a floating state. When the handle 52 abuts against the locking stop block 13, it indicates that the positioning platform is in a locked state.

[0056] Reference Figure 4As shown, the X-axis floating platform 2 includes: a first slide rail 21, a first slide table 22 disposed on the first slide rail 21, and a first limiting through hole 23 formed in the first slide table 22. The first slide rail 21 is disposed along the extension direction of the X-axis, and the first slide table 22 slides on the first slide rail 21, meaning the sliding direction of the first slide table 22 is along the X-axis. The first limiting through hole 23 is located at the center of the first slide table 22. The support shaft of the locking mechanism 5 can pass through the first limiting through hole 23, and a first cam 53 is disposed in the first limiting through hole 23, meaning the first cam 53 and the first slide table 22 are on the same horizontal plane. The first limiting through hole 23 has two first... The first limiting sidewall 24 is distributed correspondingly along the X-axis. The first cam 53 is disposed between the two first limiting sidewalls 24. Rotating the handle 52 of the locking mechanism 5 drives the first cam 53 to rotate. When the two protruding parts of the first cam 53 abut against the two first limiting sidewalls 24 respectively, the first cam 53 can restrict the sliding of the first slide 22 along the X-axis, thereby locking the X-axis floating platform 2. When the two protruding parts of the first cam 53 separate from the two first limiting sidewalls 24 respectively, the first slide 22 is unrestricted and can slide along the X-axis, thereby realizing the floating of the X-axis floating platform 2.

[0057] Similarly, refer to Figure 5As shown, the Y-axis floating platform 3 includes: a second slide rail 31, a second slide table 32 disposed on the second slide rail 31, and a second limiting through hole 33 formed in the second slide table 32. The second slide rail 31 is disposed along the extension direction of the Y-axis, and the second slide table 32 slides on the second slide rail 31, meaning the sliding direction of the second slide table 32 is along the Y-axis. The second limiting through hole 33 is located at the center of the second slide table 32. The support shaft of the locking mechanism 5 can pass through the second limiting through hole 33, and a second cam 54 is disposed in the second limiting through hole 33, meaning the second cam 54 and the second slide table 32 are on the same horizontal plane. The second limiting through hole 33 has two second limiting through holes. The limiting sidewalls 34 are distributed correspondingly along the X-axis. The second cam 54 is disposed between the two second limiting sidewalls 34. Rotating the handle 52 of the locking mechanism 5 drives the second cam 54 to rotate. When the two protruding parts of the second cam 54 abut against the two second limiting sidewalls 34 respectively, the second cam 54 can restrict the sliding of the second slide 32 along the Y-axis, thereby locking the Y-axis floating platform 3. When the two protruding parts of the second cam 54 separate from the two second limiting sidewalls 34 respectively, the second slide 32 is unrestricted and can slide along the Y-axis, thereby realizing the floating of the Y-axis floating platform 3.

[0058] Reference Figure 6 and Figure 7As shown, the R-axis floating platform 4 includes: a rotating base 41, a turntable 42 disposed on the rotating base 41, two turntable limiting holes 43 formed on the turntable 42, and two turntable sliders 45 that can slide in the turntable limiting holes 43. The turntable 42 can rotate on the rotating base 41. The two turntable limiting holes 43 are symmetrically distributed about the center of the turntable 42. The turntable limiting holes 43 have included angle limiting sidewalls 44. One end of each turntable slider 45 has a limiting block 451 that can extend into the turntable limiting hole 43 and slide in the turntable limiting hole 43. The other end of the turntable slider 45 has a roller 452 that abuts against the third cam 55. Rotating the third cam 55... The roller 452 rolls around the outer periphery of the third cam 55. When the roller 452 rolls toward the protrusion of the third cam 55, the third cam 55 can push the turntable slider 45 to slide, causing the limiting block 451 to abut against the included angle limiting sidewall 44. The abutment between the limiting block 451 and the included angle limiting sidewall 44 can restrict the rotation of the turntable 42, thereby locking the R-axis floating platform 4. When the roller 452 rolls away from the protrusion of the third cam 55, the third cam 55 can no longer apply pushing force to the turntable slider 45, and the turntable 42 is no longer restricted by the limiting block 451, thereby realizing the floating of the R-axis floating platform 4.

[0059] Specifically, in this embodiment, the R-axis floating platform 4 is mounted on the X-axis floating platform 2 and the Y-axis floating platform 3. The X-axis floating platform 2 and the Y-axis floating platform 3 are provided with grooves through which the turntable slider 45 passes. To support the turntable slider 45 and restrict its direction of movement, refer to... Figure 4 As shown, a guide pin 46 extending into the turntable slider 45 is provided on the X-axis floating platform 2. The guide pin 46 restricts the movement direction of the turntable slider 45. (Refer to...) Figure 5 As shown, the Y-axis floating platform 3 is provided with a guide rail 47 that supports the turntable slider 45, and the guide rail 47 provides sliding space for the turntable slider 45.

[0060] Specifically, in practice, the applicant of this invention discovered that in some working conditions, it is necessary to lock the three floating platforms simultaneously. In this case, the locking angles of the first cam 53, the second cam 54, and the third cam 55 can be set to be the same. That is, all floating platforms can be locked by rotating the same angle. Since the first cam 53, the second cam 54, and the third cam 55 are all fixedly connected to the handle 52, the X-axis floating platform 2, the Y-axis floating platform 3, and the R-axis floating platform 4 can be unlocked or locked synchronously by rotating the handle 52.

[0061] In other operating conditions, sometimes it is only necessary to lock one or two floating platforms while maintaining the floating function of the others. This can also be achieved using the three-axis floating positioning platform of this embodiment. Depending on the actual operating requirements, the locking angles of the first cam 53, the second cam 54, and the third cam 55 can be set differently. For example, the locking angle of the first cam 53 can be set to 30°, the locking angle of the second cam 54 to 60°, and the locking angle of the third cam 55 to 90°. In this way, during the rotation of the handle 52, the X-axis floating platform 2, the Y-axis floating platform 3, and the R-axis floating platform 4 can be unlocked or locked sequentially. In other embodiments, depending on other usage requirements, the Y-axis floating platform 3 can be locked first, followed by the X-axis floating platform 2 and the R-axis floating platform 4, or the R-axis floating platform 4 can be locked first, followed by the X-axis floating platform 2 and the Y-axis floating platform 3, etc. These are not listed here.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A three-axis floating positioning platform, characterized in that, include: Fixed base; A three-axis floating platform is mounted on a fixed base, including: an X-axis floating platform, a Y-axis floating platform, and an R-axis floating platform; A locking mechanism is provided on the fixed base. The locking mechanism includes: a connecting block that cooperates with the fixed base, a support shaft provided on the connecting block, a handle sleeved on the support shaft, and a first cam, a second cam, and a third cam connected to the handle. The first cam, the second cam, and the third cam are respectively limited to the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform. Rotating the handle causes the first cam, the second cam, and the third cam to rotate, which can unlock or lock the X-axis floating platform, the Y-axis floating platform, and the R-axis floating platform. The X-axis floating platform includes: a first slide rail, which is arranged along the extension direction of the X-axis; a first slide table, which is arranged on the first slide rail and slides on the first slide rail; a first limiting through hole, which is arranged in the first slide table; a first cam, which is arranged in the first limiting through hole; the first limiting through hole has two first limiting sidewalls, which are distributed correspondingly along the X-axis; the first cam is arranged between the two first limiting sidewalls; when the first cam is rotated, both ends of the first cam can respectively abut against the two first limiting sidewalls. The Y-axis floating platform includes: a second slide rail, which is arranged along the extension direction of the Y-axis; a second slide table, which is arranged on the second slide rail and slides on the second slide rail; a second limiting through hole, which is arranged in the second slide table; a second cam, which is arranged in the second limiting through hole; the second limiting through hole has two second limiting sidewalls, which are distributed correspondingly along the Y-axis; the second cam is arranged between the two second limiting sidewalls; when the second cam is rotated, both ends of the second cam can respectively abut against the two second limiting sidewalls. The R-axis floating platform includes: a rotating base; a turntable disposed on the rotating base; two turntable limiting holes disposed on the turntable, the two turntable limiting holes being symmetrically distributed about the center of the turntable, and the turntable limiting holes having included angle limiting sidewalls; two turntable sliders, one end of which has a limiting block that can extend into the turntable limiting hole, the limiting block sliding in the turntable limiting hole, and the other end having a roller abutting against the third cam. When the third cam is rotated, the roller rolls on the outer periphery of the third cam, and the third cam pushes the turntable slider so that the limiting block abuts against the included angle limiting sidewall.

2. The three-axis floating positioning platform according to claim 1, characterized in that: The R-axis floating platform is disposed on the X-axis floating platform and the Y-axis floating platform. The X-axis floating platform and the Y-axis floating platform are provided with grooves for the turntable slider to pass through. The X-axis floating platform is provided with a guide pin that extends into the turntable slider.

3. The three-axis floating positioning platform according to claim 1, characterized in that: The R-axis floating platform is disposed on the X-axis floating platform and the Y-axis floating platform. The X-axis floating platform and the Y-axis floating platform are provided with slide grooves for the turntable slider to pass through. The Y-axis floating platform is provided with guide rails to support the turntable slider.

4. The three-axis floating positioning platform according to claim 1, characterized in that: The locking angles of the first, second, and third cams are set to be the same, and rotating the handle simultaneously unlocks or locks the X-axis floating platform, Y-axis floating platform, and R-axis floating platform.

5. The three-axis floating positioning platform according to claim 1, characterized in that: The locking angles of the first, second, and third cams are set to be different, and the handles are rotated to unlock or lock the X-axis floating platform, Y-axis floating platform, and R-axis floating platform, respectively.

6. The three-axis floating positioning platform according to claim 1, characterized in that: A fixing groove is provided in the fixing base, and the connecting block is inserted into the fixing groove for limiting.

7. The three-axis floating positioning platform according to claim 1, characterized in that: An unlocking stop and a locking stop are provided on the fixed base.

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